Abstract

An openable top lid for a railway freight car and a railway freight car. The openable top lid comprises a cylinder (1), a connecting bar (2) and a movable top lid (3); a carriage of a railway freight car mounted with the movable top lid can be used to economically and efficiently transport granular cargo requiring anti-wetting and anti-humidity measures, or granular cargo harmful to the environment. The movable top lid can slide along a top of the car or a lateral wall having a variable-arc radial cross section, thus making full use of the car clearance, enabling a railway car to increase car volume and lower the center of gravity thereof.

IPC Classes  ?

• B61D 39/00 - Wagon or like coversTarpaulinsMovable or foldable roofs

Abstract

A carrying connection device for a road-rail combined transport vehicle, comprising an upper cover plate (1), a lower cover plate (2) and an elastic member (3). Two ends of a bottom surface of the upper cover plate are respectively provided with a fastener (4) for accommodating the elastic member. Insertion openings (5) for accommodating the elastic member are respectively provided at positions corresponding to the two ends of the top surface of the lower cover plate. The upper cover plate is fastened on the lower cover plate through the mutually matching fasteners and insertion openings, and the elastic member is installed inside a cavity formed from the fastener and the insertion opening. A bottom surface center portion of the lower cover plate is provided with an upper center plate (6) capable of connecting with a center plate on a bogie bolster. The two ends of the bottom surface of the lower cover plate are respectively provided with side bearings (7) matching lower side bearings of the bogie. The device is suitable for transport.

IPC Classes  ?

• B60F 1/00 - Vehicles for use both on rail and on roadConversions therefor
• B61D 3/18 - Wagons or vans adapted for carrying special loads for vehicles

Abstract

A movable side wall and opening/closing mechanism for railroad boxcars, comprising a side wall assembly (1), an end-portion opening/closing mechanism (2), a hinged rod assembly (3), a lateral door central clamping device (4), a upper transmission shaft assembly (5), a lower transmission shaft assembly (6), a upper track assembly (7) and a lower track assembly (8); upon loading/unloading cargo, the movable side wall can be opened further, so as to allow multiple forklifts of any tonnage on the ground to load/unload cargo to/from any positions of a carriage; the hinged rod assembly (3) and the central clamping device (4) are provided to keep the movable side wall reliably closed in order to ensure security and self-locking during transportation.

IPC Classes  ?

• B61D 17/08 - Sides

Abstract

A side wall structure of an open wagon, comprising upper side beams (1). Build-in pillow columns (3) and build-in side columns (4) are arranged on the inner sides of the upper side beams (1). Each upper side beam (1) is pressed by an outer flanged plate (1a), an upper planar plate (1b), an inner slope plate (1c) and a lower vertical plate (1d). The upper portions of the build-in pillow columns (3) and the upper portions of the build-in side columns (4) are welded on the inner slope plates (1c) and the lower vertical plates (1d). Build-in small stand columns (5) are respectively arranged on the outer sides of the build-in pillow columns (3), between adjacent build-in pillow columns (3) and build-in side columns (4) and between two adjacent build-in side columns (4). The upper portions of the build-in small stand columns (5) are welded on the inner slope plates (1c) and the lower vertical plates (1d). Side wall plates (2) comprise straight side wall plates (2a) and arc-shaped plates (2b). The lower portions of the build-in pillow columns (3), the lower portions of the build-in side columns (4) and the lower portions of the build-in small stand columns (5) are welded integrally on the straight side wall plates (2a), respectively. The arc-shaped plates (2b) are welded between the adjacent build-in pillow columns (3) and build-in side columns (4) and between two adjacent build-in side columns (4). The upper ends of the straight side wall plates (2a) are butt-joined to the lower ends of the lower vertical plates (1d). The lower ends of the straight side wall plates (2a) are welded to the upper ends of the arc-shaped plates (2b). The lower ends of the arc-shaped plates (2b) are welded to a wagon floor.

IPC Classes  ?

• B61D 17/08 - Sides
• B61D 17/04 - Construction details of vehicle bodies with bodies of metalConstruction details of vehicle bodies with composite, e.g. metal and wood, body structures
• B61D 17/06 - End walls

Abstract

A control system and an engineering vehicle provided with the control system, the control system being used for controlling the opening and closing of ballast unloading doors (30) and the rising and falling of plough pieces (220), the control system comprising: a hydraulic system (310), used to convert electrical energy into hydraulic force driving the ballast unloading doors (30) to open and close and the plough pieces (220) to rise and fall, and used for controlling the opening and closing of the ballast unloading doors (30) and the rising and falling of the plough pieces (220); an electrical control system (320), connected to the hydraulic system (310), and used for controlling the hydraulic system (310); a generator unit (330), connected to the electrical control system (320), and used to provide power for the electrical control system (320).

IPC Classes  ?

• B61D 7/28 - Opening or closing means hydraulic or pneumatic

Abstract

An engineering vehicle having a ballast unloading device (100) and a ballast levelling device (200). The engineering vehicle comprises a vehicle body (10), and the ballast unloading device (100) and the ballast levelling device (200) arranged on the vehicle body (10). The ballast unloading device (100) comprises: a ballast carrying portion (20), provided with ballast unloading openings (21), the ballast carrying portion (20) being arranged on the vehicle body (10); ballast unloading doors (30), capable of rotating with respect to the ballast carrying portion (20), inner unloading channels (31) and outer unloading channels (32) being arranged on the ballast unloading doors (30), the ballast unloading doors (30) also comprising stopper portions (33) located between the inner unloading channels (31) and the outer unloading channels (32). The ballast levelling device (200) comprises: a plough piece (220), slidably fixed on the vehicle body (10), so as to rise or fall with respect to the vehicle body (10), a plough head (224) used for ballast levelling being arranged on the plough piece (220); a first crank (230), rotatably fixed on the vehicle body (10); a connecting rod (240), one end being rotatably connected to the first crank (230), the other end being rotatably connected to the plough piece (220); a driving member (250), used for driving the first crank (230) to rotate.

IPC Classes  ?

• B61D 7/06 - Hopper cars with openings capable of discharging both between and outside the wheels
• B61D 7/12 - Hopper cars the hoppers being movable
• B61D 7/14 - Adaptations of hopper elements to railways
• B61D 7/16 - Closure elements for discharge openings
• B61D 7/18 - Closure elements for discharge openings pivoted
• B61D 7/28 - Opening or closing means hydraulic or pneumatic

Abstract

A variable-rigidity positioning device for a bogie axlebox of a railway car, comprising a vertical elastic member (20) disposed between the top face of an axlebox bearing saddle (10) and the bottom face of a side-frame guide block (40), and a horizontal elastic member (30) disposed between the axlebox bearing saddle (10) and the front side and back side of the side-frame guide block (40). The horizontal elastic member (30) is provided with at least one low-rigidity elastic element (31) and one high-rigidity elastic element (32), said low-rigidity elastic element (31) being disposed in an elastic-member precompression device (33) and, when under the effect of a precompression load F1, being arranged in serial connection with the high-rigidity elastic element (32). When the amount of horizontal warp displacement of the horizontal elastic member (30) is small, said member has a large degree of horizontal compression rigidity, thereby ensuring that when the railway car travels along a straight line, the critical speed during snaking is high, thus satisfying requirements for increased car speed. When the amount of horizontal warp displacement reaches a fixed numerical value, the degree of horizontal compression rigidity of the horizontal elastic member begins to decrease, thereby ensuring that when the railway car negotiates a curve, the transverse force between the wheels and the rails is not too great, thus safeguarding the safe travel of the car over curving tracks.

IPC Classes  ?

• B61F 5/30 - Axle-boxes mounted for movement under spring control in vehicle or bogie underframes

Abstract

Disclosed is a sidewall structure of a hopper car, comprising an integrally formed upper side beam (1), an integrated sidewall panel (2), an integrally formed lower side beam (3), and a lower sidewall (4), wherein the upper side beam (1) is in rivet connection with the integrated sidewall panel (2) therebelow; the sidewall panel (2) is in rivet connection with the integrally formed lower side beam (3) therebelow; the sidewall panel is an integrated panel column structure of wall panel and side column, the side column being arranged at the inner side of the car body; and the lower side beam (3) is in rivet connection with the lower sidewall (4) therebelow. In the sidewall structure of hopper car provided by the present invention, the sidewall panel of the internally installed integrated side column can avoid the reduction in the strength thereof due to the rivet hole, and also avoid the increase in the weight and cost due to the use of rivets, and owing to the internally installed side column, the space between the side columns can be utilized so as to increase the volume of the car body.

IPC Classes  ?

• B61D 7/00 - Hopper cars

Abstract

A two-stage-rigidity combination elastic-member device having at least one low-rigidity elastic element (1) and one high-rigidity elastic element (2), the low-rigidity elastic element (1) being disposed in an elastic-member precompression device (3) and, when under the effect of a precompression load F1, being arranged in serial connection with the high-rigidity elastic element (2). The device has a hard-to-soft rigidity combination, allowing said device to be used as an axlebox elastic suspension device on a railway car. The invention solves the problem of cars not being able simultaneously to satisfy both critical speed requirements when snaking along a straight line and curve negotiation performance requirements. The invention can also be applied in various settings in which elastic-member shock-absorbing devices having a hard-to-soft rigidity combination are required between components of a railway car to lessen the car's wheel-rail impact, raise the car's dynamic capacity, safeguard the car's operating safety, thereby improving the service quality of the car.

IPC Classes  ?

• F16F 3/00 - Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic

Abstract

Disclosed are a link type secondary locking device, a hopper car bottom door and a hopper car, relating to the technical field of railway wagons. The link type secondary locking device comprises a transmission shaft, a door opening arm, a first roller, a second roller, a first locating pin, an anti-rotation disc and a link mechanism. The hopper car bottom door comprises the link type secondary locking device. The hopper car comprises the bottom door. Even when the link type secondary locking device is accidentally under a force, the link mechanism cannot rotate and then a driven arm likewise cannot rotate. The hopper car bottom door can avoid accidental opening of the hopper car bottom door. The hopper car is more reliable in use.

IPC Classes  ?

• B61D 7/26 - Opening or closing means mechanical

Abstract

A secondary locking device, comprising a first transmission shaft (1), a second transmission shaft (2), a clutch, a pressure mechanism and a reset mechanism; under the pressure of the pressure mechanism, the clutch enables the first transmission shaft (1) to separate from the second transmission shaft (2); and under the action of the reset mechanism, the clutch enables the first transmission shaft (1) to engage with the second transmission shaft (2). The secondary locking device can be used for the bottom door of a hopper car, so that the bottom door of the hopper car opening and closing after passing over dead center in a flat four-bar linkage is more reliable.

IPC Classes  ?

• B61D 7/26 - Opening or closing means mechanical

Abstract

A locking device for a bottom side door of a railway open wagon comprises a locking seat (1), a locking plate (2), and a latch (3). A working shaft at an upper end of the locking plate (2) fits a first working groove (104) of the locking seat (1). An upper end of the latch (3) can rotate in a vertical plate hole (103) of the locking seat (1). A lower end of the latch (3) can rotate in a latch (3) connecting hole (201) at a lower end of the locking plate (2). The latch (3) has elastic deformation under the action of external force. The locking device has a first dead point. The first dead point is located at the center of the first working groove (104). The latch (3) passes through the first dead point under the action of external force to open or lock the locking device. The locking device cannot be opened by mistake during running of vehicles and turnover of car tipplers, and the working efficiency is improved.

IPC Classes  ?

• B61D 19/00 - Door arrangements specially adapted for rail vehicles
• E05C 19/08 - HaspsHasp fasteningsSpring catches therefor
• E05B 65/10 - Locks for special use for panic or emergency doors

Abstract

Provided is a side-frame sand core for a railway freight train. An inner cavity structure with an excurved hook (1), an inner cavity structure with a triangular hole (2) and a structure with a belly-like face (3) of the side-frame sand core are moulded in one as a whole sand core. Further provided is a method of manufacturing the side-frame sand core for a railway freight train. The method comprises the following steps: according to side-frame casting technique requirements, fabricating the inner cavity structure with an excurved hook (1), the inner cavity structure with a triangular hole (2) and the structure with a belly-like face (3) of the side-frame in one as a whole core box; fitting a core shooter with the whole core box and closing the mould, adding sand, shooting sand, hardening, opening the mould, and ejecting the core, so as to mould the whole sand core in one go; and treating the surface of the whole core manually. The side-frame sand core has a smooth surface, can effectively avoid the casting burrs and seams produced when combining multiple components to form a sand core, the intrinsic quality of the casting piece is improved, and the intensity of work is lightened.

IPC Classes  ?

• B22C 9/10 - CoresManufacture or installation of cores
• B61F 5/52 - Bogie frames

Abstract

A railway wagon swinging bogie bolster sand core. A fish belly cavity structure (6), a weight-reducing hole structure (3), a rod hole structure (4), a conical surface cavity structure (2) and an end portion structure (1) under a center plate surface (5) of the bolster sand core are an integrally formed integral sand core. A manufacturing method of the swinging bogie bolster sand core comprises: manufacturing an integral core box comprising the fish belly cavity structure, the weight-reducing hole structure, the rod hole structure, the conical surface cavity structure, and the end portion structure according to the casting process of the bolster, fitting the integral core box to a core shooting machine, and performing mold clamping, sand inputting, sand shooting, hardening, mold opening, and core propping, so as to manufacture the sand core once integrally, and performing surface treatment on the integral core manually. The manufactured bolster sand core has a smooth surface, and casting-incurred burrs and seams caused by using a multi-element composite core can be effectively avoided, thereby improving the intrinsic quality of the cast piece and reducing work intensity.

IPC Classes  ?

• B22C 9/10 - CoresManufacture or installation of cores

Abstract

Disclosed is a bolster sand core for an intersecting rod-type bogie frame. A fish belly inner cavity structure (6) below a central plate face (8), a water leak-hole structure (7), a lightening hole structure (4), a pull rod hole structure (5), an inner cavity structure with a splayed face (2) and an end structure (1) of the bolster sand core are moulded in one as a whole sand core. The method of manufacturing the bolster sand core for an intersecting rod-type bogie frame comprises, according to bolster casting technique requirements, fabricating the fish belly inner cavity structure, the water leak-hole structure, the lightening hole structure, the pull rod hole structure, the inner cavity structure with a splayed face and the end structure in one as a whole core box; fitting a core shooter with the whole core box and clamping the mould, adding sand, shooting sand, hardening, opening the mould, and ejecting the core, and ejecting the whole sand core from the mould in one; and processing the surface of the whole core manually. The bolster sand core obtained has a smooth surface, can effectively avoid the casting burrs and seams produced when combining multiple components to form a sand core, the intrinsic quality of the casting piece is improved, and the intensity of work is lightened.

IPC Classes  ?

• B22C 9/10 - CoresManufacture or installation of cores

Abstract

A method for manufacturing a fully-integrated core of a side frame, the method comprising the following steps: firstly, according to the requirements for a side frame casting process, manufacturing an integrated core box integrating an outer hook (1) inner cavity structure comprising a side frame, a triangular hole (2) inner cavity structure and a central square frame (3) inner cavity structure; then, with a core shooter and the integrated core box matched up, completing the actions of mold matching, sand filling, sand jetting, hardening, mold opening and core jacking to shoot an integrated core at one time; and lastly, manually treating the surface of the integrated core. The integrated core manufactured by the above core manufacturing process has a smooth surface, and can effectively avoid casting rags and burrs due to the use of a multi-element combined sand core, thus improving the internal quality of a casting piece and reducing working intensity.

IPC Classes  ?

• B22C 15/23 - Compacting by gas pressure or vacuum
• B22C 9/10 - CoresManufacture or installation of cores

Abstract

A wheel truck for a railroad car, including: a front wheel pair assembly and a rear wheel pair assembly; two side frame assemblies, each side frame assembly including a square box and journal-box guides; two spring suspension devices; and a bolster assembly including two ends disposed on the two spring suspension devices, respectively. The bolster assembly includes a pilot hole in the center and two mounting holes on the two ends, the pilot hole is rotationally matched with a cylindrical upper center plate of a car body for transmitting vertical and horizontal forces from the car body, and the two mounting holes are disposed above the two spring suspension devices, respectively. Each mounting hole receives a lower side bearing, and the lower side bearing is matched with a corresponding upper side bearing disposed on each side of the car body for transmitting the vertical load from the car body.

IPC Classes  ?

• B61F 3/00 - Types of bogies

Abstract

1 represents a friction coefficient of the secondary friction surface.

IPC Classes  ?

• B61F 3/00 - Types of bogies

Abstract

z. The elastic component is disposed between the inner pedestal and the bearing sleeve for controlling a relative position of the inner pedestal and the bearing sleeve.

IPC Classes  ?

• F16C 17/04 - Sliding-contact bearings for exclusively rotary movement for axial load only
• B61F 5/14 - Side bearings

Abstract

The present invention relates to an open wagon cover locking apparatus comprising a block body, a lifting hook block, a lifting hook, a locking hook block, a locking hook, and a connecting rod. The lifting hook has an upward pointing point and is connected to the lifting hook block; the lifting hook block is slidably arranged within the block body. The locking hook block is hinged at the lower portion of the block body; the locking hook has a downward pointing point and is connected to the locking hook block. The lifting hook block and the locking hook block are connected by the connecting rod. The present invention is arranged distributedly along the edge of an open wagon cover, when the cover is placed on top of the wagon, the lifting hook slides downward under the effect of gravity, and drives via the connecting rod the locking hook block to turn downward, and the locking hook hooks onto the side beam of the wagon body. When the cover is opened, the lifting hook slides upward under the upward traction effect of a lifting apparatus, and drives via the connecting rod the locking hook block to turn upward, and the locking hook detaches from the side beam of the wagon body, thereby allowing automatic unlocking. The present invention has a simple structure, a reliable locking and quick unlocking feature, and is effective in the prevention of damage to cargo due to rain water intrusion, and of environmental pollution due to flying dust from the cargo.

IPC Classes  ?

• B61D 17/12 - Roofs
• B61D 39/00 - Wagon or like coversTarpaulinsMovable or foldable roofs

Abstract

The present invention relates to an open wagon cover comprising an arched hood, a support face, and a locking apparatus. The arched hood and the support face are made of a fiber reinforced plastic material, and via the supporting face, the arched hood is in contact with the top face of the four surrounding sides of an open wagon. The support face has bolt holes arranged thereon; a plurality of locking apparatus are arranged distributedly on the support face via the bolt holes. The locking apparatus comprises a block body, a lifting hook block, a lifting hook, a locking hook block, a locking hook, and a connecting rod. When the cover is placed on top of the wagon, the lifting hook slides downward under the effect of gravity, and drives via the connecting rod the locking hook block to turn downward, and the locking hook hooks onto the side beam of the wagon body. When the cover is opened, the lifting hook slides upward under the upward traction effect of a lifting apparatus, and drives via the connecting rod the locking hook block to turn upward, and the locking hook detaches from the side beam of the wagon body, thereby allowing automatic unlocking. The present invention has a simple structure, a reliable locking and quick unlocking feature, and is effective in the prevention of damage to cargo due to rain water intrusion, and of environmental pollution due to flying dust from the cargo.

IPC Classes  ?

• B61D 17/12 - Roofs
• B61D 39/00 - Wagon or like coversTarpaulinsMovable or foldable roofs

Abstract

An empty-weight two-stage frictional lower side bearing for use in the railway freight car bogie, comprises a side bearing outer sleeve pressure plate (7) whose top part is equipped with empty-load frictional plates (3), a side bearing inner base (6) whose upper part is provided with a pressing block (2) of the inner seat of the side bearing, and a heavy-load frictional plate (1) equipped on the top part of the pressing block (2) of the inner seat of the side bearing. The friction coefficient μk of the empty-load frictional plates (3) is greater than the friction factor μz of the heavy-load frictional plate (1). An elastic element (5) is provided between the side bearing inner base (6) and a side bearing outer sleeve (4) to control the vertical position relative to each other. The horizontal position of the empty-load frictional plates (3) under empty state is higher than that of the heavy-load frictional plate (1). The horizontal positions of the empty-load frictional plates (3) under heavy load state are flush with that of the heavy-load frictional plate (1). A railway freight car bogie provided with such a lower side bearing has a higher critical speed during empty-load state and better curve passing ability during heavy-load state.

IPC Classes  ?

• B61F 5/14 - Side bearings
• B61F 5/02 - Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogieConnections between underframes and bogies

Abstract

A full side bearing bearing-type railway truck bogie comprises two side frame assemblies (12), a bolster assembly (15) and two sets of center spring hanging devices (14). A centre guide hole (15a) which is matched with a cylindrical upper center plate (16) of a truck body is formed in the center of the bolster assembly and used for transmitting the longitudinal force and the horizontal force of the truck body. The two ends of the bolster assembly are provided with lower side bearing mounting holes (15b) those are formed corresponding to the upper sides of the center spring hanging devices (14). Lower side bearings (13) corresponding to upper side bearings (17) on the two sides of a truck body are provided in the lower side bearing mounting holes (15b) for transferring the vertical load of the truck body. The bogie has the advantages of less weight, high stability of truck side rolling vibration, high critical speed during empty-load state and better curve passing ability during heavy-load state.

IPC Classes  ?

• B61F 5/02 - Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogieConnections between underframes and bogies
• B61F 5/04 - Bolster supports or mountings
• B61F 5/14 - Side bearings

Abstract

A railway freight car bogie comprises a small top angle wedge (8a) located on the top of a damping spring. A main friction surface (8a1) of the wedge is in contact with a vertical column friction plate. An auxiliary friction surface (8a2) of the wedge is in contact with a bolster surface of a swing bolster assembly. The structural parameters of the wedge satisfy a specific formula: α=16~30°, and μ＜tgα＜μ+μ1, wherein α is the angle between the auxiliary friction surface and a vertical plane, μ is the frictional factor of the main friction surface and μ1 is the frictional factor of the auxiliary friction surface. The bogie presents the following advantages: a simple structure, low production and maintenance cost, sufficient diamond resistance rigidity and better dynamic property and curve passing performance. The bogie can meet the need of significant speed acceleration of a railway freight car.

IPC Classes  ?

• B61F 5/04 - Bolster supports or mountings
• B61F 5/14 - Side bearings

Abstract

An inclined wedge vibration reduction device for the railway freight car bogie, comprises an inclined wedge component (1) and a vibration reduction spring component (2) arranged under the inclined wedge component (1).The inclined wedge component comprises an inclined wedge (1b), a main friction plate (1a) and a secondary friction block (1c). The structural parameters of the wedge component satisfy a specific formula. The inclined wedge is made of steel or iron material. The main friction plate is made of high-molecular material, and the secondary friction block is made of modified nylon material. The device is simple in structure, has low production and maintenance cost, sufficient diamond resistance rigidity, better dynamic property and curve passing performance. The device can meet the need of significant speed acceleration of a railway freight car.

IPC Classes  ?

• B61F 5/04 - Bolster supports or mountings
• B61F 5/14 - Side bearings