Abstract

Provided is a crane equipped with a device capable of efficiently acquiring video of the surroundings with few blind spots. A crane (1) comprises: a counterweight (32); and an upper structure (31) behind which the counterweight (32) is disposed. The transport posture width (W1) of a subject-to transportation configuration (5) including the upper structure (31) is smaller than the width of the counterweight (32). The crane further comprises at least two lateral cameras (61, 62) that image the left-right direction from the upper structure (31). The two lateral cameras (61, 62) are respectively arranged at a first position (P1a) on the left side and a first position (P1b) on the right side, the positions being outside the range of the transport posture width (W1). The two lateral cameras (61, 62) can be rearranged at a second position (P2a) on the left side and a second position (P2b) on the right side, respectively.

IPC Classes  ?

• B66C 13/00 - Other constructional features or details
• B66C 15/00 - Safety gear
• B66C 23/88 - Safety gear

Abstract

In order to more easily optimize periphery monitoring, there is provided a periphery-monitoring device that displays a periphery of a work machine in an overhead view. The periphery-monitoring device includes distance measurement means for acquiring distance information to an object on the periphery of the work machine, display means for displaying the object in a first aspect in accordance with the distance information, and exclusion target determination means for determining at least a portion of the object having a distance measured by the distance measurement means within a prescribed range, as an exclusion target object, in a predetermined detection mode. During work, the display means displays the object on the periphery in the first aspect by excluding the object determined as the exclusion target by the exclusion target determination means, in the objects detected by the distance measurement means.

IPC Classes  ?

• B66C 13/18 - Control systems or devices
• B66C 23/62 - Constructional features or details
• B66C 23/88 - Safety gear
• G06V 10/764 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using classification, e.g. of video objects
• G06V 10/94 - Hardware or software architectures specially adapted for image or video understanding
• G06V 20/52 - Surveillance or monitoring of activities, e.g. for recognising suspicious objects

Goods & Services

Cranes; loading-unloading machines and apparatus; construction machines and apparatus. Repair or maintenance of cranes; repair or maintenance of loading-unloading machines and apparatus; repair or maintenance of construction machines and apparatus.

Abstract

The present invention makes it possible to inspect a crane by means of a mobile body even in a narrow work site. This method for flying a mobile body 40 equipped with a detection unit comprises: a first flight step for flying while detecting the surface of an ordinary portion of a crane 20 other than a specific portion by means of the detection unit; and a second flight step for flying while detecting, by means of the detection unit, the surface of the specific portion of the crane 20 while in a state in which one or more of the position, the slew angle, and the boom angle thereof is different in comparison to that in the first flight step.

IPC Classes  ?

• B64D 47/08 - Arrangements of cameras
• B64C 13/18 - Initiating means actuated automatically, e.g. responsive to gust detectors using automatic pilot
• B64U 10/13 - Flying platforms
• B66C 15/00 - Safety gear

Abstract

A crane inspection system includes a moving body including an imaging unit and moving around a crane, a processing unit configured to perform an inspecting process, based on imaging data captured by the imaging unit, and a route setting unit configured to set a movement route of the moving body during an inspection, based on a disposition state relating to at least one of a structure, a posture, a position, and a direction of the crane.

IPC Classes  ?

• G05D 1/00 - Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
• G01M 5/00 - Investigating the elasticity of structures, e.g. deflection of bridges or aircraft wings
• G05D 1/10 - Simultaneous control of position or course in three dimensions

Abstract

A winch drum monitoring device that monitors a state of a winch drum includes: a phase detector configured to detect a phase of the winch drum; and a distance detector configured to detect a distance to the winch drum or a distance to a wire rope wound around the winch drum.

IPC Classes  ?

• B66D 1/40 - Control devices

Abstract

In order to improve the suitability of periphery monitoring in an easier manner, the present invention provides a periphery-monitoring device for displaying the periphery of a work machine 1 as an overhead view, the periphery-monitoring device having a distance detection means 634 for acquiring information pertaining to the distance to objects in the periphery of the work machine 1, a display means 622 for reflecting the distance information and displaying the objects in a first state, and an excluded-object determination means for determining at least some objects for which the distance detected by the distance detection means 634 is within a prescribed range as objects to be excluded in a pre-established detection mode, the display means 622 excluding objects determined by the excluded-object determination means as objects to be excluded from the objects detected by the distance detection means 634 and displaying periphery objects in the first state.

IPC Classes  ?

• B66C 13/00 - Other constructional features or details
• B66C 23/88 - Safety gear

Abstract

A crane system, a crane, and a mobile unit capable of easily coping with a case where electrical equipment such as an obstacle light fails are to be provided. A crane system includes a crane body and a mobile unit movable around the crane body. The mobile unit includes an obstacle light and functions as an obstacle light for the crane body.

IPC Classes  ?

• B66C 15/06 - Arrangements or use of warning devices

Abstract

A crane includes a crane body, a flying body, a route information acquisition unit that acquires route information in transporting a suspended load of the crane body via the flying body, and a support unit that performs steering support for performing a transport operation of the crane body along a movement route indicated by the route information.

IPC Classes  ?

• B66C 13/46 - Position indicators for suspended loads or for crane elements
• B66C 13/48 - Automatic control of crane drives for producing a single or repeated working cycleProgramme control
• B64C 39/02 - Aircraft not otherwise provided for characterised by special use
• B64D 47/00 - Equipment not otherwise provided for
• G05D 1/02 - Control of position or course in two dimensions

Abstract

The work machine includes a work machine body, and an assembly component that is attached to the work machine body. The work machine further includes a detection unit that monitors surroundings. The work machine body includes a lower traveling body and a rotating platform that rotates relative to the lower traveling body. The detection unit is attached to the rotating platform without interposing the assembly component.

IPC Classes  ?

• B66C 23/74 - Counterweights or supports for balancing lifting couples separate from jib
• B66C 13/00 - Other constructional features or details
• B66C 23/88 - Safety gear

Abstract

Provides is a crane in which the manipulation according to an operator's intention is more easily performed. The crane includes a manipulating member capable of performing at least one of an accelerator manipulation for increasing or decreasing a rotational speed of an engine and a turning manipulation of a turning body. A predetermined operation is stopped in a case where an operator is not touching the manipulating member and the predetermined operation (turning operation, traveling operation, or the like) of the crane is performed.

IPC Classes  ?

• B66C 13/18 - Control systems or devices
• B66C 23/86 - Slewing gear hydraulically actuated
• B66C 23/36 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes mounted on road or rail vehiclesManually-movable jib cranes for use in workshopsFloating cranes
• B66C 13/56 - Arrangements of handles or pedals
• B66C 23/00 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes
• B66C 23/88 - Safety gear

Abstract

A display device includes a display unit, and a control unit that displays a flight route of a flying object flying while photographing surroundings of a crane on the display unit. The control unit is configured to display the crane and the flight route on the display unit, and to display the flight route in a display mode viewed from at least two different directions.

IPC Classes  ?

• G05D 1/00 - Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
• B64U 101/26 - UAVs specially adapted for particular uses or applications for manufacturing or servicing for manufacturing, inspections or repairs
• B64U 101/30 - UAVs specially adapted for particular uses or applications for imaging, photography or videography

Abstract

Provided is a periphery monitoring device for a work machine that displays an overhead image of the work machine and surroundings of the work machine, the device including: a detector that detects a distance to a surrounding object with respect to the work machine; and a display that displays the object in the overhead image with the distance between the work machine and the object reflected, in which a display range of the display for the object is a range obtained by extracting a portion of a detection range of the detector.

IPC Classes  ?

• B66C 23/88 - Safety gear
• B66C 13/18 - Control systems or devices

Abstract

The present invention makes it easier, compared to the conventional art, to set a movement route for a mobile body. A crane inspection system 100 comprises: a mobile body 40 that has a camera 41 and moves around a crane 20; and an information terminal 60 that performs processing for inspection, on the basis of the data of images captured by the camera 41. The information terminal 60 includes a control unit 65 that sets a movement route for the mobile body 40 at the time of the inspection on the basis of a disposition state related to at least one of the structure, posture, position and orientation of the crane 20.

IPC Classes  ?

• B66C 15/00 - Safety gear
• B66C 13/00 - Other constructional features or details

Abstract

Provided is a monitoring device for a winch drum of a crane, the device including: a monitoring unit that monitors whether or not an abrasion generation condition is satisfied for the winch drum; and a notification unit that performs notification based on satisfaction of the abrasion generation condition.

IPC Classes  ?

• B66D 1/50 - Control devices automatic for maintaining predetermined rope, cable, or chain tension, e.g. in ropes or cables for towing craft, in chains for anchorsWarping or mooring winch-cable tension control
• B66D 1/54 - Safety gear
• B66C 13/16 - Applications of indicating, registering, or weighing devices
• B66C 13/46 - Position indicators for suspended loads or for crane elements
• B66C 13/48 - Automatic control of crane drives for producing a single or repeated working cycleProgramme control

Abstract

Provided is a crane including a boom. The crane hoists a suspended load through a hook from a tip of the boom, and position adjustment control for causing a position of the hook and a position of the tip of the boom to be close to each other as viewed in a vertical direction is performed until the suspended load is separated from a ground surface from a start of a hoisting motion.

IPC Classes  ?

• B66C 13/46 - Position indicators for suspended loads or for crane elements
• B66C 23/90 - Devices for indicating or limiting lifting movement
• B66C 23/36 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes mounted on road or rail vehiclesManually-movable jib cranes for use in workshopsFloating cranes

Abstract

A winch brake device that is used for a work machine and generates a braking force on the basis of a brake manipulation, includes a pressing member that brings braking members into pressure contact with each other to generate the braking force, a first brake cylinder that applies a first pressing force for bringing the braking members into pressure contact with each other to the pressing member, and a second brake cylinder that applies a second pressing force different from the first pressing force to the pressing member. The first brake cylinder and the second brake cylinder are capable of applying the first pressing force or the second pressing force independently of each other.

IPC Classes  ?

• B66D 5/26 - Operating devices pneumatic or hydraulic
• F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
• B66D 5/22 - Crane, lift, hoist, or winch brakes operating on drums, barrels, or ropes for generating braking forces which are proportional to the loads suspendedLoad-actuated brakes with axial effect

Goods & Services

Game programs for arcade video game machines; simulators for the steering and control of vehicles; photographic machines and apparatus; cinematographic machines and apparatus; optical machines and apparatus; telecommunication machines and apparatus; personal digital assistants; electronic machines, apparatus and their parts; electronic machines and apparatus; electron tubes; semi-conductor elements; electronic circuits, not including those recorded with computer programs; computer programs, downloadable; application software, downloadable; downloadable computer programs for management and support of remote inspection of construction machines and apparatus; downloadable computer programs for management and support of remote inspection of loading-unloading machines and apparatus; downloadable computer programs for management and support of remote inspection of construction machines and apparatus through the use of unmanned aerial vehicles or drones; downloadable computer programs for management and support of remote inspection of loading-unloading machines and apparatus through the use of unmanned aerial vehicles or drones; downloadable computer programs for data analysis and report generation relating to remote inspection of construction machines and apparatus; downloadable computer programs for data analysis and report generation relating to remote inspection of loading-unloading machines and apparatus; downloadable computer programs for image determination, image recognition or image analysis; downloadable computer programs for processing digital images; downloadable computer programs for use in scientific and technological analysis; downloadable computer programs for use in scientific and technological analysis by artificial intelligence; downloadable computer programs for operations management of unmanned aerial vehicles and drones; downloadable computer programs for maintenance management of unmanned aerial vehicles and drones; downloadable computer programs for equipment body information management of unmanned aerial vehicles and drones; downloadable computer programs for pilot information management of unmanned aerial vehicles and drones; downloadable computer programs for supporting documentation; downloadable computer software for recording and processing information input; game programs for home video game machines; electronic circuits and CD-ROMs recorded with programs for hand-held games with liquid crystal displays; phonograph records; downloadable music files; downloadable image files; recorded video discs and video tapes; electronic publications. Repair or maintenance of construction machines and apparatus; repair or maintenance of loading-unloading machines and apparatus; construction; inspection prior to maintenance and repair of bridges; repair of bridges; inspection prior to maintenance and repair of lattice towers; repair of lattice towers; inspection prior to maintenance and repair of steel towers; repair of steel towers; inspection prior to maintenance and repair of side slopes; repair of side slopes; construction consultancy; operation, inspection prior to maintenance and repair, and maintenance of building equipment; inspection prior to maintenance and repair of buildings and structures; maintenance of buildings and structures; remote-controlled inspection prior to maintenance and repair of construction machines and apparatus through the use of unmanned aerial vehicles or drones; remote-controlled inspection prior to maintenance and repair of loading-unloading machines and apparatus through the use of unmanned aerial vehicles or drones; repair or maintenance of aircraft; repair or maintenance of unmanned aerial vehicles; repair or maintenance of civilian drones; repair or maintenance of drones for industrial purposes; repair or maintenance of drones with camera; repair or maintenance of photography drones; repair or maintenance of electronic machines and apparatus; repair or maintenance of telecommunication machines and apparatus; repair or maintenance of telephone apparatus; repair or maintenance of telecommunication machines and apparatus [other than telephone apparatus, radio receivers and television receivers].

Abstract

There is provided a crane including a crane body, and a mobile unit moving around the crane body. The crane body includes a power supply unit, and includes a power supply path member connected to the mobile unit and supplying power to the mobile unit from the power supply unit.

IPC Classes  ?

• B66C 13/00 - Other constructional features or details
• B66C 13/12 - Arrangements of means for transmitting pneumatic, hydraulic, or electric power to movable parts or devices
• B64F 3/02 - Ground installations specially adapted for captive aircraft with means for supplying electricity to aircraft during flight

Abstract

There is provided a crane inspection system including a mobile unit including an imaging unit and moving around a crane, and a processing unit that performs predetermined processing on captured image data captured by the imaging unit. The mobile unit images a plurality of locations including an inspection location of the crane.

IPC Classes  ?

• B66C 13/16 - Applications of indicating, registering, or weighing devices
• B64C 39/02 - Aircraft not otherwise provided for characterised by special use
• B64U 10/13 - Flying platforms
• B64U 101/30 - UAVs specially adapted for particular uses or applications for imaging, photography or videography
• B66C 13/46 - Position indicators for suspended loads or for crane elements
• B66C 23/42 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes mounted on road or rail vehiclesManually-movable jib cranes for use in workshopsFloating cranes with jibs of adjustable configuration, e.g. foldable
• G06T 7/00 - Image analysis
• G06T 17/00 - 3D modelling for computer graphics

Abstract

There is provided a crane that is assemblable and disassemblable and is capable of changing a monitoring range for periphery monitoring according to an assembly state of the crane.

IPC Classes  ?

• B66C 13/00 - Other constructional features or details
• B66C 9/00 - Travelling gear incorporated in, or fitted to, trolleys or cranes
• B66C 23/72 - Counterweights or supports for balancing lifting couples
• B66C 23/88 - Safety gear

Abstract

Provided are a work machine and a mobile crane which are assembled or disassembled and with which a monitoring process that is hardly dependent on the monitoring state of assembly components can be achieved. This work machine (1), which is assembled or disassembled, comprises a work machine body and an assembly component (13) attached to the work machine body. The work machine further comprises a detection unit (20) for monitoring the surroundings, wherein the work machine body includes a lower traveling body (11) and an upper revolving body (12) that rotates relative to the lower traveling body (11), and the detection unit (20) is attached to the upper revolving body (12) without the assembly component (13) therebetween.

IPC Classes  ?

• E02F 9/24 - Safety devices
• E02F 9/26 - Indicating devices
• B66C 13/00 - Other constructional features or details
• B66C 23/26 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes for use on building sitesCranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail

Abstract

There is provided a periphery display device for a work machine, which displays a bird's-eye view image around the work machine. A display magnification of a region between a peripheral line having a turning radius of the work machine and an offset peripheral line surrounding the peripheral line is different from a display magnification of a region inside the peripheral line.

IPC Classes  ?

• G09G 5/373 - Details of the operation on graphic patterns for modifying the size of the graphic pattern
• E02F 9/26 - Indicating devices
• B60K 35/00 - Instruments specially adapted for vehiclesArrangement of instruments in or on vehicles
• E02F 3/46 - DredgersSoil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes

Abstract

In order to transport a suspended load along an appropriate route, a crane 10, which is equipped with a crane body 20 and a flying body 40, is provided with a route information acquisition unit 442 for acquiring, by means of the flying body, route information with regard to transport of a suspended load L of the crane body, and an assistance unit 311 for providing driving assistance for carrying out the transport operation of the crane body in accordance with a movement route indicated by the route information.　Transport can be carried out by the crane body 20 on the basis of the route information, in which the movement route flown by the flying body 40 serves as the transport route of the suspended load L, and thus transport can be carried out even when the route is not visible from the crane body 20.

IPC Classes  ?

• G05D 1/00 - Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
• G05D 1/10 - Simultaneous control of position or course in three dimensions
• G08G 5/04 - Anti-collision systems
• B66C 13/00 - Other constructional features or details
• B66C 13/46 - Position indicators for suspended loads or for crane elements

Abstract

Provided are a crane system, a crane, and a mobile unit with which it is possible to easily cope with a failure of an electrical component such as an aviation obstacle light. A crane system (1) comprises a crane body (10) and a mobile unit (20) that can move around the crane body. The mobile unit (20) has an aviation obstacle light (26) and functions as an aviation obstacle light for the crane body (10).

IPC Classes  ?

• B66C 15/06 - Arrangements or use of warning devices
• G08G 5/04 - Anti-collision systems
• B66C 23/88 - Safety gear

Abstract

Provided is a construction machine including a hydraulic system having a hydraulic pump, and a first hydraulic actuator and a second hydraulic actuator which are driven by hydraulic oil supplied from the hydraulic pump. The construction machine includes a first flow rate detector that detects a flow rate of drain hydraulic oil discharged from the first hydraulic actuator, a second flow rate detector that detects a flow rate of drain hydraulic oil discharged from the second hydraulic actuator, and an abnormality determination unit that determines abnormality of the first hydraulic actuator, based on a detection signal from the first flow rate detector, and determines abnormality of the second hydraulic actuator, based on a detection signal from the second flow rate detector. The first flow rate detector and the second flow rate detector each have a moving body.

IPC Classes  ?

• F15B 19/00 - Testing fluid-pressure actuator systems or apparatus, so far as not provided for elsewhere
• B66C 13/16 - Applications of indicating, registering, or weighing devices
• B66C 13/20 - Control systems or devices for non-electric drives

Abstract

A crawler-type crane includes an upper turning body and a lower traveling body on which the upper turning body is turnably mounted and which has a pair of left and right side frames; a car body that connects both the side frames to each other to support the upper turning body; and a front lower weight and a rear lower weight attached to both front and rear end sides of the car body. Rotational moments with reference to the center position of the upper turning body of the front lower weight and the rear lower weight are made different from each other.

IPC Classes  ?

• B66C 23/74 - Counterweights or supports for balancing lifting couples separate from jib
• B66C 23/36 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes mounted on road or rail vehiclesManually-movable jib cranes for use in workshopsFloating cranes
• B66C 13/16 - Applications of indicating, registering, or weighing devices
• B62D 55/06 - Endless-track vehicles with tracks and without ground wheels
• B66C 9/14 - Trolley or crane travel drives

Abstract

A crane includes a lower traveling body, an upper turning body that is turnably provided on the lower traveling body, a counterweight that is mounted on the upper turning body, and a ladder for getting on and off the upper turning body. The ladder has an engagement member that is able to be engaged with and disengaged from an engaged portion provided at the upper turning body, a support portion that supports the engagement member, and a following mechanism that is interposed between the engagement member and the support portion. When the engaged portion in a state of being engaged with the engagement member is moved downward with work of mounting the counterweight, the following mechanism causes the engagement member to follow downward movement of the engaged portion.

IPC Classes  ?

• E06C 5/24 - Dismounting ladders from vehicles
• B60R 3/00 - Arrangements of steps, e.g. running-boards
• B62D 55/06 - Endless-track vehicles with tracks and without ground wheels
• B66C 13/00 - Other constructional features or details
• B66C 23/62 - Constructional features or details
• B66C 23/74 - Counterweights or supports for balancing lifting couples separate from jib
• E06C 5/02 - Ladders characterised by being mounted on undercarriages or vehiclesSecuring ladders on vehicles with rigid longitudinal members
• E06C 7/48 - Ladder headsSupports for heads of ladders for resting against objects

Abstract

The present invention makes it possible to facilitate the crane inspection work, which requires work in high places.　To achieve this, provided is a crane inspection system 100 which has a mobile unit 40 that has an image-capturing means 41 and moves around a crane 20, and a processing unit 50 that performs predetermined processing on the image data captured by the image-capturing means 41, wherein the mobile unit 40 is configured so as to capture images of a plurality of locations including the inspection location of the crane 20.　This reduces the need for workers to perform the crane 20 inspection work, which requires work in high places, and reduces the burden of the inspection work.

IPC Classes  ?

• B66C 15/00 - Safety gear
• G05D 1/02 - Control of position or course in two dimensions
• B66C 13/00 - Other constructional features or details
• B66C 23/42 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes mounted on road or rail vehiclesManually-movable jib cranes for use in workshopsFloating cranes with jibs of adjustable configuration, e.g. foldable

Abstract

In order to achieve the purpose of enabling long-term operation of the mobile unit, provided is a crane 10 which has a crane body 20 and a mobile unit 40 that moves around the crane body 20, , wherein the crane body 20 has power supply means 60, 62, 64 and has a power supply path member 51 that is connected to the mobile unit 40 and supplies power from the power supply means 60, 62, 64 to the mobile unit 40.　Thus, the mobile unit 40 is not equipped with a power supply but is supplied with power from the crane body 20 side, thereby allowing the long-term operation of the mobile unit 40.

IPC Classes  ?

• B66C 13/00 - Other constructional features or details
• B66C 13/12 - Arrangements of means for transmitting pneumatic, hydraulic, or electric power to movable parts or devices

Abstract

There is provided a crane including a main body, a tower derrickably supported by the main body, a jib derrickably supported by the tower, an assist member that assist the jib to move along a ground, and a determination unit that determines whether or not the jib is stopped when the tower is lowered in a lowering work state where the jib is assisted by the assist member.

IPC Classes  ?

• B66C 23/64 - Jibs
• B66C 13/18 - Control systems or devices
• B66C 1/02 - Load-engaging elements or devices attached to lifting, lowering, or hauling gear of cranes, or adapted for connection therewith for transmitting forces to articles or groups of articles by suction means

Abstract

There is provided a crane winch device allowing a suspended load to freely fall due to a load thereof. The crane winch device includes a winch drum around which a rope for suspending the suspended load is wound, braking brake unit that brakes the winch drum, speed-increasing unit that performs speed-increasing assist of the winch drum in a direction of free fall acceleration when a braking force of the brake unit is smaller than a first threshold, and an adjustment unit that adjusts the first threshold.

IPC Classes  ?

• B66D 1/44 - Control devices non-automatic pneumatic or hydraulic
• B66D 1/16 - Power transmissions between power sources and drums or barrels the drums or barrels being freely rotatable
• B66D 1/08 - Driving gear incorporating fluid motors

Abstract

There is provided a mobile crane including an undercarriage, turning body turnably supported by the undercarriage, a boom derrickably supported by the turning body, a derricking unit that causes the boom to perform a derricking operation, a derricking force measurement unit that measures a derricking force by which the derricking unit causes the boom to perform the derricking operation, a ground angle acquisition unit that acquires a boom-to-ground angle which is an angle of the boom relative to a ground where the undercarriage is disposed, and an actually suspended load calculation unit that calculates an actually suspended load, based on the derricking force and the boom-to-ground angle.

IPC Classes  ?

• B66C 13/16 - Applications of indicating, registering, or weighing devices
• B66C 13/50 - Applications of limit circuits or of limit-switch arrangements
• B66C 15/06 - Arrangements or use of warning devices
• B66C 23/36 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes mounted on road or rail vehiclesManually-movable jib cranes for use in workshopsFloating cranes
• B66C 23/72 - Counterweights or supports for balancing lifting couples
• B66C 23/84 - Slewing gear
• B66C 23/90 - Devices for indicating or limiting lifting movement
• B66C 23/94 - Safety gear for limiting slewing movements
• G01C 9/00 - Measuring inclination, e.g. by clinometers, by levels
• G01G 19/14 - Weighing apparatus or methods adapted for special purposes not provided for in groups for weighing suspended loads
• G01L 5/04 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
• G07C 5/08 - Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle, or waiting time

Abstract

A crane includes a crane body, a boom, a hoisting winch, and a rope holding device pressing a rope wound around a drum of the hoisting winch against the drum. The rope holding device includes an oscillating arm whose proximal end is attached to a base of the hoisting winch using a support shaft and distal end oscillates in a direction close to or away from the drum, and a rope presser which is attached to a distal end of the oscillating arm, extends in an axial direction of the drum between a pair of flanges, and abuts against the rope wound around the drum. A weight member, which biases a distal end side of the oscillating arm in a direction close to the drum by the gravity with the support shaft as a fulcrum, is provided at the proximal end of the oscillating arm.

IPC Classes  ?

• B66D 1/38 - Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains by means of guides movable relative to drum or barrel
• B66C 23/36 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes mounted on road or rail vehiclesManually-movable jib cranes for use in workshopsFloating cranes

Abstract

Provided is a construction machine in which it is possible by the use of a simple configuration to determine which one of a plurality of hydraulic actuators is abnormal. This construction machine is provided with a first flow rate detector (17v) for detecting the flow rate of drain hydraulic oil discharged from a first hydraulic actuator (17), a second flow rate detector (18v) for detecting the flow rate of drain hydraulic oil discharged from a second hydraulic actuator (18), and an abnormality determination unit (31) for determining abnormality of the first hydraulic actuator on the basis of a detection signal from the first flow rate detector, and also determining abnormality of the second hydraulic actuator on the basis of a detection signal from the second flow rate detector. The first flow rate detector and the second flow rate detector each have: a movement body (62) disposed in a flow passage (L2, L3) for the drain hydraulic oil and biased in the direction in which the movement body (62) blocks the flow of the drain hydraulic oil; and an output unit (65) which outputs a detection signal corresponding to the amount of movement of the movement body.

IPC Classes  ?

• F15B 20/00 - Safety arrangements for fluid actuator systemsApplications of safety devices in fluid actuator systemsEmergency measures for fluid actuator systems
• B66C 13/20 - Control systems or devices for non-electric drives
• B66C 15/00 - Safety gear
• E02F 9/26 - Indicating devices
• G01F 1/26 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow by variable-area meters of the valve type

Abstract

A working machine with a crawler includes a lower traveling body having a pair of crawlers, an upper turning body, an extension beam installed rotatably to be parallel in a longitudinal direction of the crawler, a fitting portion opened in a side frame of the crawler, a fixing pin fixing the extension beam to the side frame, a fixing pin insertion hole, a fixing pin fitting hole, and a reinforcement rib, in which the extension beam extends to be inserted into the fitting portion, and the reinforcement rib is provided at a center portion of an opening of the fitting portion, and the fixing pin fitting hole is disposed at a position which is deviated from an imaginary center line extending along a longitudinal direction of the fitting portion from the center portion and does not interfere with the reinforcement rib.

IPC Classes  ?

• B62D 55/084 - Endless-track units or carriages mounted separably, adjustably or extensibly on vehicles, e.g. portable track units
• B62D 55/06 - Endless-track vehicles with tracks and without ground wheels
• B66C 9/00 - Travelling gear incorporated in, or fitted to, trolleys or cranes

Abstract

There is provided a crane including a front member capable of derricking, a backstop disposed on a rear surface side of the front member so as to limit a standing operation of the front member, an angle sensor that detects an angle of the front member, an operation detection unit that detects whether or not the backstop is operated, and a controller that controls a derricking operation of the front member. In a case where the controller determines that the angle of the front member is equal to or larger than a predetermined angle, based on a detection signal output from the angle sensor, and determines that the backstop is not operated, based on a detection signal output from the operation detection unit, the controller stops the standing operation of the front member.

IPC Classes  ?

• B66C 23/92 - Snubbers or dash-pots for preventing backwards-swinging of jibs, e.g. in the event of cable or tackle breakage
• B66C 23/06 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes with jibs mounted for jibbing or luffing movements
• B66C 23/90 - Devices for indicating or limiting lifting movement
• B66C 13/22 - Control systems or devices for electric drives
• B66C 23/36 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes mounted on road or rail vehiclesManually-movable jib cranes for use in workshopsFloating cranes

Abstract

Provided is a crawler-type crane that is capable of ensuring high backward stability during both forward lifting and rearward lifting. In this crawler-type crane, an upper turning body 3 is turnably mounted on a lower traveling body 1, and the lower traveling body 1 has: a pair of right and left side frames 11R, 11L; a car body 12 which couples the two side frames 11R, 11L so as to support the upper turning body 3; and a front-side lower weight 17 and a rear-side lower weight 18 that are mounted to the front-end side and the rear-end side of the car body 12, respectively, wherein the front-side lower weight 17 to be mounted to the front-end side of the car body 12 and the rear-side lower weight 18 to be mounted on the rear-end side of the car body 12 are configured to have mutually different weights so as to make the barycentric position of the lower traveling body 1 substantially coincide with the turning center of the upper turning body 3.

IPC Classes  ?

• B66C 23/74 - Counterweights or supports for balancing lifting couples separate from jib

Abstract

A control device of a hydraulic winch includes an engine, a hydraulic pump, a hydraulic motor driving a winch drum, a winch manipulating member, an engine control unit controlling a rotation speed of the engine, a winch load detector detecting a load applied to the winch drum, and a motor capacity control unit controlling a motor capacity of the hydraulic motor so as to decrease a motor capacity of the hydraulic motor in a fuel-saving operation mode to a motor capacity which is smaller than a motor capacity of the hydraulic motor in a normal operation mode. The engine control unit sets an upper limit value of the rotation speed of the engine in the fuel-saving operation mode to a value which is lower than a maximum rotation speed of the engine in the normal operation mode and corresponds to the load detected by the winch load detector.

IPC Classes  ?

• B66D 1/08 - Driving gear incorporating fluid motors
• B66D 1/44 - Control devices non-automatic pneumatic or hydraulic
• B66D 5/26 - Operating devices pneumatic or hydraulic

Abstract

Provided is a crane which allows counterweight mounting work to be carried out with a ladder stably engaged with the upperstructure. This crane comprises: an upperstructure 2 that is rotatably provided on an undercarriage 1; a counterweight 10 that is mounted on the upperstructure 2; and a ladder 13 for getting on and off a work platform 12 for the upperstructure 2. The ladder 13 has an engagement member 16 in which an inverted U-shaped engagement groove 16a is formed and a support member 15 that rotatably supports the engagement member 16. The engagement member 16 is formed with an elongated hole 16b into which a pin 19 provided on the support member 15 is inserted. When the upperstructure 2 sinks during the mounting of the counterweight 10, the engagement member 16 rotates and follows the downward movement of an engagement-receiving portion 12b, and thus it is possible to prevent the engagement groove 16a from lifting and coming off from the engagement-receiving portion 12b.

IPC Classes  ?

• B66C 15/00 - Safety gear
• E06C 5/02 - Ladders characterised by being mounted on undercarriages or vehiclesSecuring ladders on vehicles with rigid longitudinal members
• E06C 7/48 - Ladder headsSupports for heads of ladders for resting against objects

Abstract

The present invention provides a technology for alerting an operator, who is operating a construction machine such as a crane, that an engine is not to be started. This alerting unit comprises: a cover member for covering a first keyhole to be inserted with a key for starting a construction machine and/or a second keyhole of an opening/closing member provided before reaching the first keyhole from the outside of the construction machine; and an alerting member disposed near the cover member.

IPC Classes  ?

• B66C 15/00 - Safety gear
• B66C 13/52 - Details of compartments for driving engines or motors or of operator's stands or cabins

Abstract

A suspended load calculation device includes a detection unit configured to detect information for specifying a load suspended by a crane, a calculation unit configured to calculate the suspended load based on a value detected by the detection unit, and an acquisition unit configured to acquire a boom length, in which the calculation unit corrects the suspended load by a correction value corresponding to the boom length acquired by the acquisition unit.

IPC Classes  ?

• G01L 5/00 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
• B66C 13/16 - Applications of indicating, registering, or weighing devices
• G01L 5/04 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
• G01G 19/14 - Weighing apparatus or methods adapted for special purposes not provided for in groups for weighing suspended loads
• B66C 13/46 - Position indicators for suspended loads or for crane elements
• B66C 23/90 - Devices for indicating or limiting lifting movement

Abstract

In a work machine including an engine; a hydraulic pump; an actuator; an operating member that operates an actuator; an exhaust gas purifying device; a load application device that applies a load to an engine to raise the temperature of exhaust gas; and a control device, the load application device includes a load application valve that is provided in series between the hydraulic pump and the actuator and performs switching as to whether a hydraulic oil flow channel between the hydraulic pump and the actuator is brought into a communication state or a non-communication state in accordance with a control pressure, and if a load application request is input, the control device changes the control pressure exerted on the load application valve on the basis of the presence or absence of input of an operation signal of the operating member.

IPC Classes  ?

• F02D 29/04 - Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving pumps
• F02D 41/02 - Circuit arrangements for generating control signals
• F01N 3/023 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
• F01N 9/00 - Electrical control of exhaust gas treating apparatus

Abstract

A working machine includes a lower body, a turning body, a turning manipulating member which turns the turning body, a hydraulic motor which rotationally drives the turning body, a brake device which brakes the hydraulic motor, a main hydraulic source which supplies hydraulic oil to the hydraulic motor, and a direction control valve which controls a flow direction of the hydraulic oil according to the manipulated variable of the turning manipulating member, in which in a state where the hydraulic motor is braked by the brake device based on a manipulation of a brake manipulating member, when the turning manipulation is performed by the turning manipulating member, a brake applied to the hydraulic motor by the brake device is released with respect to turning in an indication direction indicated by the turning manipulation such that the turning body turns in the indication direction.

IPC Classes  ?

• B66C 23/86 - Slewing gear hydraulically actuated
• F15B 11/044 - Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member for controlling the speed by means in the return line
• B66C 13/20 - Control systems or devices for non-electric drives
• B66C 23/00 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes
• F15B 11/10 - Servomotor systems without provision for follow-up action with only one servomotor in which the servomotor position is a function of the pressure
• F15B 13/042 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
• E02F 9/12 - Slewing or traversing gears
• F15B 11/00 - Servomotor systems without provision for follow-up action
• F16H 61/4157 - Control of braking, e.g. preventing pump over-speeding when motor acts as a pump

Abstract

A counterweight device installed in a rear end portion of a machine body frame includes amounting table having amounted counterweight, a hydraulic cylinder that raises/lowers the mounting table, a connection structure that connects the mounting table and a cylinder rod of the hydraulic cylinder, a support member that supports the hydraulic cylinder on the mounting table via an oscillating spindle, a first coupling mechanism that couples the connection structure and the rear end portion of the machine body frame to each other at a position where an upper end of the rear end portion is lower than an upper end of the connection structure, a second coupling mechanism that couples the support member and the rear end portion of the machine body frame to each other, a first operation unit that operates the first coupling mechanism, and a second operation unit that operates the second coupling mechanism.

IPC Classes  ?

• B66C 23/74 - Counterweights or supports for balancing lifting couples separate from jib
• B66C 23/68 - Jibs foldable or otherwise adjustable in configuration

Abstract

A counterweight device including a base plate having a mounted counterweight, a hydraulic cylinder that raises/lowers the counterweight mounted on the base plate, a detachable frame connecting the base plate and a cylinder rod of the hydraulic cylinder, a first pin pivotably supporting the detachable frame with respect to the cylinder rod, a guide coupling portion guiding a free end side of the detachable frame to the rear end portion side of a turning frame in response to a stretching/shrinking state of the cylinder rod, and coupled to the turning frame below an upper end of the rear end portion, and a rail (guide member) guiding the free end side of the detachable frame in a direction parallel to a stretching/shrinking direction of the cylinder rod. The mounting table and the hydraulic cylinder may be supported by a rear end portion of a machine body frame of a construction machine.

IPC Classes  ?

• B66C 23/74 - Counterweights or supports for balancing lifting couples separate from jib
• B66C 23/00 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes

Abstract

The crane includes a swing brake device installed between a hydraulic motor and a control valve and having a flow restrictor; a first backpressure detector detecting a motor backpressure between the flow restrictor and one of ports of the hydraulic motor; a second backpressure detector detecting a motor backpressure between the flow restrictor and the other port of the hydraulic motor; and a control device. The control device has an external-force direction estimation unit that estimates a swing direction of an upperstructure under an external force acting on the upperstructure on the basis of a motor backpressure detected by the first backpuressure detector and a motor backpressure detected by the second backpressure during an operating state of the swing brake device. The control device has a notification control unit that causes the notification device to provide notification of the estimated swing direction of the upperstructure.

IPC Classes  ?

• F16D 31/02 - Fluid couplings or clutches with pumping sets of the volumetric type, i.e. in the case of liquid passing a predetermined volume per revolution using pumps with pistons or plungers working in cylinders
• B66C 23/86 - Slewing gear hydraulically actuated
• B66C 13/16 - Applications of indicating, registering, or weighing devices
• B66C 13/20 - Control systems or devices for non-electric drives
• B66C 23/00 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes
• F15B 11/044 - Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member for controlling the speed by means in the return line
• F15B 11/08 - Servomotor systems without provision for follow-up action with only one servomotor
• F15B 13/043 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves
• B66C 23/36 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes mounted on road or rail vehiclesManually-movable jib cranes for use in workshopsFloating cranes

Abstract

A cylinder retraction system causes a crawler side frame hoisting hydraulic cylinder, swingably suspended on a ventral surface side of a lower boom, to swing between a retracted attitude, in which the hydraulic cylinder is set along a ventral surface of the lower boom, and an operating attitude, in which the hydraulic cylinder is oriented along a vertical direction. As the rod of the hydraulic cylinder, currently having the operating attitude, is contracted by a predetermined extent, the rod front end of the hydraulic cylinder is guided by the guiding portion until the hydraulic cylinder takes on the retracted attitude. As the hydraulic cylinder, currently having the retracted attitude, is extended by a predetermined extent, engagement between the rod front end of the hydraulic cylinder and the guiding portion is released so as to allow the hydraulic cylinder to take on the operating attitude.

IPC Classes  ?

• B66C 23/36 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes mounted on road or rail vehiclesManually-movable jib cranes for use in workshopsFloating cranes
• B66C 23/62 - Constructional features or details
• B66C 9/00 - Travelling gear incorporated in, or fitted to, trolleys or cranes

Abstract

A crane includes: a boom; a jib; a front post that is swingably attached to a tip end side of the boom; a rear post that is swingably attached to the tip end side of the boom; a post-side pendant member, with one end of the post-side pendant member being attached to a tip end of the rear post; a boom-side pendant member, with one end of the boom-side pendant member being attached to another end of the post-side pendant member, and another end of the boom-side pendant member being attached to the boom; and a post driving device having a link mechanism that rotates the rear post in a range including a position at which the rear post is swung down to the front post side and a position at which the rear post is swung down to the boom side, while the boom is held down in a horizontal position.

IPC Classes  ?

• B66C 23/70 - Jibs assembled from separate sections to form jibs of various discrete lengths
• B66C 23/36 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes mounted on road or rail vehiclesManually-movable jib cranes for use in workshopsFloating cranes
• B66C 23/34 - Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes
• B66C 23/82 - Luffing gear

Abstract

A control device for a hydraulic winch includes: a hydraulic source; a variable-displacement hydraulic motor; a winch operation member; an accelerator operation quantity detection unit; an engine control unit; a rotation speed detection unit; a line pull detection unit; a condition decision unit; and a motor displacement control unit, wherein: once the condition decision unit decides that the fuel-efficient, high-speed operation condition has been established, the engine control unit sets an upper limit to the engine rotation speed at a predetermined rotation speed, lower than the maximum rotation speed.

IPC Classes  ?

• B66C 13/20 - Control systems or devices for non-electric drives

Abstract

A counterweight suspension device includes a pair of suspension cylinders that suspends a counterweight and that are hung from first and second hanging points provided separately in a left and right direction at a top end of a rear mast. A coupling member couples cylinder rod ends of the pair with each other. A lifting member lifts the counterweight. First and second connection points of the counterweight are connected with each of the cylinder rod ends, with the first and the second connection points provided separately in the left and right direction on the counterweight for attaching the lifting member to the counterweight. A first communication circuit is provided through which rod chambers of the suspension cylinders communicate with each other. A second communication circuit is provided through which bottom chambers of the suspension cylinders communicate with each other.

IPC Classes  ?

• B66C 23/76 - Counterweights or supports for balancing lifting couples separate from jib and movable to take account of variations of load or of variations of length of jib
• B66C 23/74 - Counterweights or supports for balancing lifting couples separate from jib

Abstract

A rotating superstructure includes: a front block on which a power unit that includes a prime mover; and a rear block on which a unit for raising and lowering a boom that includes a winch, a, and an arm. And the rotating superstructure is configured to be split into the front block and the rear block.

IPC Classes  ?

• B66C 23/18 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes

Abstract

A counterweight installation device includes: a weight support unit provided on a rear end of a body frame of a construction machine; a weight mounting unit disposed on a counterweight; a pin member for mounting the counterweight adapted to move between a first position at which the weight mounting unit is mounted on the weight support unit and a second position at which the weight mounting unit is dismounted from the weight support unit; and a rod device, one end of which is linked with the pin member and an other end of which extends so as to project to an outside of the counterweight, adapted to move the pin member between the first position and the second position by operation at the other end thereof.

IPC Classes  ?

• B66C 23/72 - Counterweights or supports for balancing lifting couples