Abstract

The present disclosure relates to the field of engineering machinery, and provides an engineering vehicle cooling system, which is used for realizing on-demand cooling of engineering vehicles. The engineering vehicle cooling system comprises an engine cooling system (1), a hydraulic cooling system (2), a transmission cooling system (3) and an air conditioning cooling system (4). The engine cooling system (1) comprises an engine (11), a cooling fan (12) and a heat dissipation assembly (13), the engine (11) being in driving connection with the cooling fan (12). The hydraulic cooling system (2) comprises a hydraulic system (21) and a first electronic fan (22) configured to cool the hydraulic system (21). The transmission cooling system (3) comprises a transmission system (31) and a second electronic fan (32). The air conditioning cooling system (4) comprises an air conditioning system (41) and a third electronic fan (42). The first electronic fan (22), the second electronic fan (32) and the third electronic fan (42) are distributed around the cooling fan (12), so that on-demand cooling of the engine, the hydraulic system, the transmission system and the air conditioning system is realized. The present disclosure further relates to an engineering vehicle and a cooling method therefor.

IPC Classes  ?

• F16H 57/04 - Features relating to lubrication or cooling
• F01P 3/18 - Arrangement or mounting of liquid-to-air heat-exchangers
• F01P 5/06 - Guiding or ducting air to or from ducted fans
• F02B 29/04 - Cooling of air intake supply
• B60K 11/04 - Arrangement or mounting of radiators, radiator shutters, or radiator blinds
• B60H 1/32 - Cooling devices
• F01P 5/04 - Pump-driving arrangements
• F01P 1/00 - Air cooling
• F01P 3/20 - Cooling circuits not specific to a single part of engine or machine
• F15B 21/0423 - Cooling
• B60K 11/00 - Arrangement in connection with cooling of propulsion units
• B60K 11/06 - Arrangement in connection with cooling of propulsion units with air cooling
• B60H 1/00 - Heating, cooling or ventilating devices

Abstract

An ink composition, and a preparation method therefor and the use thereof. The ink composition comprises the following components in parts by weight: 12-17 parts of epoxidized natural rubber ENR-25, 5-10 parts of a modified alkyd resin, 2-3 parts of a coupling agent, 1-3 parts of a fluorine-containing resin, 8-10 parts of nano titanium dioxide, 2-15 parts of a pigment, 1-5 parts of a dispersing agent, 30-50 parts of a solvent, 0.5-1.5 parts of an anti-settling agent, 5-10 parts of a self-made anti-aging elastomer and 1-2 parts of an anti-aging agent. The ink composition contains the anti-aging elastomer, such that the adhesiveness, anti-foaming property and anti-aging property of the ink can be enhanced. The ink composition can be printed on dynamically used rubber products such as tires, has a high adhesive force, is not prone to falling off and has good aging resistance.

IPC Classes  ?

• C09D 11/02 - Printing inks

Abstract

The present disclosure discloses a crane, including: a chassis; a rotatable platform, rotatably arranged on the chassis; a main arm, including a first end hinged with a first end of the rotatable platform, and a second end for lifting a weight; a mast, configured to luff the main arm, wherein a first end of the mask is hinged with the first end of the rotatable platform, and a second end of the mast is connected to the second end of the main arm and a second end of the rotatable platform; and a first independent counterweight system, including a first independent counterweight, and a connecting structure connected between the first independent counterweight and the rotatable platform, wherein the connecting structure is configured to enable the first independent counterweight to be in a partial working state, and in the partial working state, the first independent counterweight is supported on the ground and the weight of the first independent counterweight is supported jointly by the ground and the rotatable platform.

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 23/36 - 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

Abstract

A cutting ring for a concrete pump truck and a manufacturing method therefor, and a concrete pump truck. The cutting ring for a concrete pump truck comprises a ring-shaped base body (10) and a wear-resistant layer, wherein the ring-shaped base body (10) comprises an easily worn part; the wear-resistant layer is arranged on the easily worn part; and the wear-resistant layer and the base body (10) are integrally formed by means of casting. In the process of the wear-resistant layer, which is arranged on the easily worn part of the base body (10), and the base body (10) being integrally formed by means of casting, the wear-resistant layer and the base body (10) are integrated, such that the wear-resistant layer and the base body (10) are firmly combined, and the wear-resistant layer is not prone to flaking off or cracking, so that the service life of the cutting ring can be greatly prolonged.

IPC Classes  ?

• F04B 53/00 - Component parts, details or accessories not provided for in, or of interest apart from, groups or
• F04B 15/02 - Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
• B22C 9/24 - Moulds for peculiarly-shaped castings for hollow articles
• B22C 9/04 - Use of lost patterns

Abstract

Disclosed in the present disclosure is a fire truck, relating to the technical field of high-altitude fire fighting, and being used for improving the high-altitude fire extinguishing capability of the fire truck. The fire truck comprises a truck body, an arm support, a supporting platform, an unmanned aerial vehicle, a transferring pipeline and a water hose. The truck body is constructed to be walkable; the arm support is mounted on the truck body; the supporting platform is mounted at a tail end of the arm support; the unmanned aerial vehicle is mounted on the supporting platform; the transferring pipeline is mounted on the arm support; and one end of the water hose is in fluid communication with the transferring pipeline, and the other end of the water hose is detachably connected to the unmanned aerial vehicle. With the fire truck provided in the technical solution, high-altitude fire extinguishing at a higher height is realized. In addition, under the same fire extinguishing height requirement, the length of the water hose dragged by the unmanned aerial vehicle is shorter, and the load of the unmanned aerial vehicle is smaller, such that a fire extinguishing agent with a large flow rate can be used for fire extinguishing, and the fire extinguishing capacity can be improved.

IPC Classes  ?

• A62C 27/00 - Fire-fighting land vehicles

Abstract

A crane, comprising an independent counterweight system, a first independent counterweight (72), and a connecting structure connected between the first independent counterweight (72) and a slewing platform (22). The connecting structure is configured to allow the first independent counterweight (72) to be provided with a partially working state. In the partially working state, the first independent counterweight (72) is supported on the ground and the weight of the first independent counterweight (72) is supported jointly by the ground and the slewing platform (22). This allows the first counterweight (72) to provide the effect of stabilizing the crane so as to prevent the crane from tipping and, at the same time, allows a reduced load on the slowing platform (22) and a slewing support structure (21) of the slewing platform (22), favors improved working conditions and environment for the slewing platform (22) and the slewing support structure (21), reduces damages to the slewing platform (22) or the slewing support structure (21), and increases the service life of the slewing platform (22) or the slewing support structure (21).

IPC Classes  ?

• B66C 23/84 - Slewing gear

Abstract

The present disclosure relates to a foldable truss boom section, a truss boom and a crane. The foldable truss boom section includes: two chords that do not intersect with each other; at least two slideways fixedly disposed on each of the two chords, wherein each of the at least two slideways has at least two slideway fixing points; and at least two long web members connecting the two chords, wherein each of the at least two long web members has at least one sliding end which is slidable along the slideway and connected to the slideway at one of the at least two slideway fixing points, so that a cross-section state of the truss boom section is changeable.

IPC Classes  ?

• B66C 23/68 - Jibs foldable or otherwise adjustable in configuration

Abstract

A method for controlling vibration of a boom (1), a device, engineering machinery, and a computer readable storage medium. The method for controlling vibration of a boom comprises: acquiring a first input signal of a handle; performing input shaping on the first input signal, and obtaining a second input signal, the second input signal being used to limit a residual vibration amplitude ratio of a boom to be no greater than a residual vibration amplitude ratio threshold; determining, according to the second input signal and a maximum flow rate of a hydraulic actuator used to drive actuation of the boom, a flow rate demand signal of the hydraulic actuator; determining, according to the flow rate demand signal and a flow rate compensation function, an input voltage signal of a flow rate control valve connected to the hydraulic actuator, wherein the flow rate compensation function is an inverse function of a flow rate characteristic curve function of the flow rate control valve; and controlling actuation of the flow rate control valve according to the input voltage signal.

IPC Classes  ?

• F16F 15/00 - Suppression of vibrations in systemsMeans or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion

Abstract

The present disclosure relates to a foam uniform-mixing pipe, a mixed foam fire-extinguishing system, a control method therefor, and a fire fighting truck. The foam uniform-mixing pipe comprises: a main uniform-mixing pipe for mixing a mixed foam solution F with a foaming medium to generate foam F'; and a foaming medium filling pipe for filling the foaming medium into the main uniform-mixing pipe, with an output segment thereof being inserted into an inner cavity of the main uniform-mixing pipe and extending in a direction consistent with the direction of extension of the main uniform-mixing pipe, a tip of the output segment thereof being sealed, and a side wall thereof being provided with a foaming medium output hole. The foaming medium flows out of the foaming medium output hole and is fully mixed with the flowing foam mixed solution, and the foaming medium output hole in the side wall is not parallel to and opposite the flowing direction of the foam mixed solution, so as to prevent the foam mixed solution from flowing into the foaming medium output hole, and thereby improving the foaming efficiency and the foaming stability.

IPC Classes  ?

• A62C 5/02 - Making of fire-extinguishing materials immediately before use of foam

Abstract

The present disclosure relates to a dry powder spraying system and a fire engine. The dry powder spraying system comprises: a dry powder fluidization tank; a pressurized gas supply, pressure-adjustably in communication with the dry powder fluidization tank; a dry powder spraying apparatus, in communication with the dry powder fluidization tank, and configured to spray fluidized dry powder airflow; and a blow-aiding apparatus, configured to guide blow-aiding airflow of a set pressure to the dry powder spraying apparatus so as to satisfy a set spraying pressure required by the dry powder spraying apparatus. Based on the described technical solution, the embodiments of the present disclosure at least solve the problem of insufficient blowing pressure of an aerial apparatus.

IPC Classes  ?

• A62C 31/00 - Delivery of fire-extinguishing material
• A62C 27/00 - Fire-fighting land vehicles

Abstract

An experiment platform for conveying of a dry powder fire suppression agent, comprising: a fluidization blowing conveying device (1) configured to generate a dry powder fire suppression agent capable of being sprayed; a pipeline test device (2) provided at an outlet of the fluidization blowing conveying device (1), provided with a pipeline joint capable of being assembled and disassembled, and configured to mount a conveying pipeline to be tested; and a recycling transferring device (3) provided at an outlet of the pipeline test device (2) and configured to collect the dry powder fire suppression agent, separate components in the dry powder fire suppression agent, and transfer the dry powder components which are separated out to the fluidization blowing conveying device (1).

IPC Classes  ?

• A62C 37/50 - Testing or indicating devices for determining the state of readiness of the equipment
• B65G 53/16 - Gas pressure systems operating with fluidisation of the materials
• B65G 53/60 - Devices for separating the materials from propellant gas
• B65G 53/66 - Use of indicator or control devices, e.g. for controlling gas pressure, for controlling proportions of material and gas, for indicating or preventing jamming of material

Abstract

Disclosed are a step structure and a work vehicle. A step device comprises: fixing frames (10); pedal frames (20) hingedly connected to the fixing frames (10) and capable of flipping towards the side away from the fixing frames (10) to unfold and flipping towards the side close to the fixing frames (10) to close; and at least two step structures (30) provided on the step frames (20) and capable of unfolding along with the unfolding of the step frames (20) and collapsing along with the closing of the step frames (20). The step structure occupies a small space and is easy to use.

IPC Classes  ?

• B60R 3/02 - Retractable steps

Abstract

A foldable truss section, a truss, and a crane. The foldable truss section comprises: two chords (1) that do not intersect each other; at least two slideways (3) fixedly disposed on the chords (1), each slideway (3) having at least two slideway fixing points; and at least two long webs (2) connected to the two chords (1), each web (2) having at least one sliding end, the sliding end of the long web (2) being slidable with respect to the slideway (3), and selectively connected to the at least two slideway fixing points, so that the truss section is in different cross-sectional states. The long webs of the truss section are slidably connected to the chords, and the cross-sectional area of the truss can be changed simply and quickly without disassembling the truss section, thereby adapting to different requirements in a transportation state and an operating state.

IPC Classes  ?

• B66C 23/64 - Jibs
• B66C 23/68 - Jibs foldable or otherwise adjustable in configuration

Abstract

Hoisting equipment, comprising: a cantilever crane component and a chassis, the chassis comprising a rail and a plurality of first balancing trolleys (2), the first balancing trolleys (2) being provided on the rail and located in a front region below the cantilever crane component; in a first working condition, each of the first balancing trolleys (2) comprises a first balancing beam (22) and two first trolleys (21), the first balancing beam (22) being jointed above the two first trolleys (21); in a second working condition, each of the first balancing trolleys (2) further comprises a balancing beam group and a trolley group, the trolley group being located outside the first trolleys (21) in an extension direction of the rail, and the balancing beam group being jointed above the first balancing beam (22) and the trolley group; and the hoisting weight in the first working condition does not exceed a preset hoisting weight, and the hoisting weight in the second working condition exceeds the preset hoisting weight. The hoisting capacity of the hoisting equipment can be configured according to actual hoisting requirements, and said structure can both increase the hoisting capacity, and reduce the ground pressure.

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 23/60 - Derricks
• B66C 23/74 - Counterweights or supports for balancing lifting couples separate from jib
• B66C 23/78 - Supports, e.g. outriggers, for mobile cranes

Abstract

A fire extinguishing agent injection system and method, and an aerial fire engine. The fire extinguishing injection system comprises: a first storage apparatus (1), used for storing a fire extinguishing agent; a second storage apparatus (13), used for storing a blowing gas and connected to the first storage apparatus (1) so as to blow out the fire extinguishing agent when the blowing gas passes through the first storage apparatus (1); a first injector (11), used for injecting the fire extinguishing agent and the blowing gas; a delivery pipe, connected between the first storage apparatus (1) and the first injector (11) and used for delivering the mixture of the fire extinguishing agent and the blowing gas; a pressure control valve (17), provided between the first storage apparatus (1) and the second storage apparatus (13) and used for controlling the pressure at an outlet of the second storage apparatus (13); and a controller (12), used for calculating the difference in the pressure of the mixture of the fire extinguishing agent and the blowing gas between an inlet and an outlet of the delivery pipe and regulating the control pressure of the pressure control valve (17) on the basis of the pressure difference produced by calculation. The fire extinguishing agent injection system allows the automatic regulation of the pressure of the mixture of the fire extinguishing agent and the blowing gas when arriving at the first injector (11).

IPC Classes  ?

• A62C 31/00 - Delivery of fire-extinguishing material
• A62C 27/00 - Fire-fighting land vehicles

Abstract

A fire truck comprises a chassis, booms and a forcible entry device. The booms are provided on the chassis and comprise a first boom connected to the chassis, and the forcible entry device (8) is provided on the booms. The fire truck also comprises a steering mechanism (9) for swinging the forcible entry device (8) from side to side. By providing the steering mechanism (9) for swinging the forcible entry device (8) from side to side, the side forcible entry function can be conveniently realized, and the forcible entry flexibility of the fire truck can be effectively improved.

IPC Classes  ?

• A62C 27/00 - Fire-fighting land vehicles

Abstract

Power equipment, a driving device of trench cutter, and a trench cutter are disclosed. The power equipment comprises a motor, a motor installation seat with an inner cavity having a first installation hole and a second installation hole in respective ends, and a transmission shaft. The motor, at the upper part of the seat, is sealingly connected with the seat. A motor output shaft extends into the inner cavity through the first installation hole. One end of the transmission shaft extends into the inner cavity through the second installation hole and is drivingly connected with the motor output shaft. The middle part of the transmission shaft and the second installation hole are sealingly connected; the other end of the transmission shaft extends from the second installation hole. A motor oil drainage cavity can be sealed by sealing the seat without changing the structure of the motor without a lip seal.

IPC Classes  ?

• E02F 5/02 - Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
• E02F 9/20 - DrivesControl devices
• E02F 5/14 - Component parts for trench excavators, e.g. indicating devices
• F16D 3/06 - Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted to allow axial displacement

Abstract

A travelling mechanism for a bridge detection vehicle, and the bridge detection vehicle. The travelling mechanism comprises a vehicle frame (11), a linearly-stretching mechanism, a second oil cylinder (9), and a travelling component. One end of the linearly-stretching mechanism is hingedly connected to the vehicle frame (11), and the other end is hingedly connected to the travelling component. One end of the second oil cylinder (9) is hingedly connected to the vehicle frame (11), and the other end of second oil cylinder (9) is hingedly connected to the outer portion of the linearly-stretching mechanism. The second oil cylinder (9) drives the linearly-stretching mechanism to be raised upwards and aslope or drives the linearly-stretching mechanism to move downwards and then to be perpendicular to the ground. The linearly-stretching mechanism drives the travelling component to be retracted upwards or drives the travelling component to move downwards and then to be in contact with the ground. In the travelling mechanism for a bridge detection vehicle and the bridge detection vehicle, the second oil cylinder (9) drives the linearly-stretching mechanism to be raised upwards and aslope or drives the linearly-stretching mechanism to move downwards and then to be perpendicular to the ground, so that the travel distance of the linearly-stretching mechanism is reduced compared with the prior art; the travel distance of the linearly-stretching mechanism is small and the linearly-stretching mechanism is mounted under the vehicle frame, thereby avoiding the problem of affected rotary space of an upper vehicle due to the excessively great travel distance of a single oil cylinder for reaching a raise height.

IPC Classes  ?

• E01D 19/10 - RailingsProtectors against smoke or gases, e.g. of locomotivesMaintenance travellersFastening of pipes or cables to bridges

Abstract

Disclosed is an automatic supplying pressure compensation system, comprising a switch control device (1), an oil supply device (2), a pressure compensation device (3) capable of real-time detection of the variation of inner cavity pressure thereof, and a power unit (4) associated with the pressure compensation device (3), the pressure compensation device (3) supplying oil to the power unit (4). The switch control device (1) refers to the detection result of the pressure compensation device (3), and if the inner cavity pressure is smaller than the pre-set first threshold value, the oil supply device (2) is triggered to supply oil to the pressure compensation device (3); if the inner cavity pressure is larger than the pre-set first threshold value, the oil supply device (2) is triggered to stop supplying oil to the pressure compensation device (3). The automatic supplying pressure compensation system is able to detect in real time the inner cavity pressure of the pressure compensation device (3) and automatically supply oil, and thus can effectively provide pressure compensation to the power unit (4).

IPC Classes  ?

• F15B 21/00 - Common features of fluid actuator systemsFluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
• G05D 16/00 - Control of fluid pressure

Abstract

A power apparatus, slotter drive device and slotter, comprising a motor, a motor mounting base and a transmission shaft; the motor mounting base has an inner cavity and a first mounting hole and a second mounting hole respectively provided at both ends of the inner cavity; the motor is mounted on the upper portion of the motor mounting base, and forms a sealed connection with the motor mounting base; the motor output shaft of the motor extends into the inner cavity through the first mounting hole; one end of the transmission shaft extends into the inner cavity through the second mounting hole, and is in a drive connection with the motor output shaft; a sealed connection is formed between the middle of the transmission shaft and the second mounting hole; the other end of the transmission shaft extends to the outside of the second mounting hole. The power apparatus seals a motor oil drainage cavity by sealing a motor mounting base, thus improving loading capacity of a lip-seal-free motor without changing the structure of the motor.

IPC Classes  ?

• E02F 5/14 - Component parts for trench excavators, e.g. indicating devices