Railway hopper car for transporting powdered goods

Abstract

A railway hopper car for transporting powdered goods, the railway hopper car comprising a car body (1), a pneumatic control system (2), coupler and draft gears (3), an air brake device (4), a manual brake device (5) and bogies (6). Hydraulic control systems (7) are provided at the lower portion of the car body (1); the car body (1) comprises an underframe (11); two hoppers (12) each having a double sealing structure are provided at the bottom portion of the underframe (11); the two hoppers (12) are distributed on two sides of a center sill of the underframe (11); two side walls (13) are provided on two sides of the underframe (11); end walls (14) are respectively provided at two ends of the two side walls (13); a car roof (15) is provided at the upper portions of the side walls (13) and the end walls (14); discharge ports are provided at the bottom portions of the hoppers (12); rotary bottom doors (8) having secondary locking devices (9) are provided at the discharge ports; the car roof (15) comprises a fixed roof cover assembly and a movable roof cover assembly provided directly above the fixed roof cover. The present invention solves the problems of hopper cars of side walls being incapable of satisfying both strength and space requirements, roof covers being jammed, bottom doors being prone to accidental opening, and the sealing performance being poor.

Description

A railway hopper car for transporting powdered goods Technical field

[0001] The present invention relates to the technical field of railway hopper cars, and more specifically to the technical field of a railway hopper car for transporting powdered goods. Background technique

[0002] Currently, there are various types of hopper cars running on China's railways. Generally, they are divided into grain hopper cars, ballast hopper cars, coal hopper cars, etc. according to the different transported goods. Among these types, grain is a cargo with relatively small particle size. Grain hopper cars generally mainly transport particulate matters such as corn, soybeans, and rapeseed. For powdered goods, such as flour, etc., general gondola cars are usually used to load them in bagged form. In this form, during the circulation process, it has to go through multiple packaging disassembly processes, with low production efficiency, low transportation safety, large cargo losses, high labor intensity, and large consumption of packaging materials and human resources.

[0003] Due to the relatively large size of the hopper opening and the bottom door and the limitation of manufacturing processes, the flatness of the "mouth"-shaped hopper opening and the flatness of the bottom door panel are out of tolerance, and the sealing effect is not good when they are used in combination. Therefore, when transporting fine-grained powdered goods, if only the first-layer sealing structure is used, it may cause cargo leakage.

[0004] Currently, when loading grain on the top cover of railway freight cars and existing railway grain and flour hopper cars and other railway fine-grained freight cars, the moving distance of a single rectangular loading hatch cover is only about 1225 mm, the total length of the loading hatch is about 5 m, and the total length of the loading hatch only accounts for about 30% of the length of the car roof and is discontinuous, so the grain loading efficiency is not high. The rectangular top cover is driven by a pneumatic motor, a sprocket, a transmission chain, etc., and is provided with tracks, pulleys, etc. The types and quantities of parts are relatively many, the driving device structure is complex, and the product cost is relatively high. When the sliding track is deformed or the roller bearing is rusted, it will cause the top cover to move stuck, which is not convenient for use, and the maintenance cost will also increase accordingly.

[0005] Currently, the side wall components of hopper cars in China basically adopt two forms. One is a straight-wall type, and the other is an arc type. The straight-wall side wall can make greater use of the clearance space and increase the vehicle volume, but the stiffness of the side wall panel is not enough, and it is easy to produce outward expansion deformation after loading the cargo, which is not convenient for subsequent vehicle maintenance and use. The stiffness of the arc side wall is better than that of the straight-wall side wall, but it cannot make full use of the clearance space, the vehicle volume is small, which is not conducive to the subsequent operation of the vehicle.

[0006] Currently, the bottom doors of railway hopper cars in my country are mainly located at the bottom of the car body. One type uses pneumatic, hydraulic, or electronic control methods for opening and closing, while the other uses a mechanical linkage mechanism that utilizes ground facilities for automatic opening and closing. The first type of bottom door mainly includes pull-out and rotary types. Pneumatic, hydraulic, and electronic control devices directly act on the bottom door to drive it open and close. This method has a complex structure, low transmission efficiency, and complicated operation; if the equipment malfunctions, the bottom door can easily open unexpectedly. The second type of bottom door mainly uses a flip-type design, where rollers from the bottom door's transmission device contact ground facilities to achieve automatic opening and closing. This method requires additional ground contact facilities, increasing costs.

[0007] Therefore, in response to the national policy of shifting grain transportation methods from "bagged grain transportation" to "bulk grain transportation", there is an urgent need to design a new railway hopper car for transporting powdery goods. Summary of the Invention

[0008] The purpose of this invention is to solve the technical problems of existing hopper cars, such as the side walls not being able to balance strength and space, top cover jamming, bottom door being easy to open accidentally, and poor sealing. This invention provides a railway hopper car for transporting powdery goods.

[0009] To achieve the above objectives, the present invention specifically adopts the following technical solution:

[0010] This invention provides a railway hopper car for transporting powdery goods, including a car body, a pneumatic control system, a coupler buffer device, an air braking device, a manual braking device, and a bogie. The lower part of the car body is equipped with a hydraulic control system. The car body includes a chassis, and two hoppers with double sealing structures are set at the bottom of the chassis. The two hoppers are distributed on both sides of the middle beam of the chassis. Two side walls are set on both sides of the chassis, and end walls are set at both ends of the two side walls. The upper part of the side walls and end walls is provided with a car roof. The bottom of the hoppers is provided with a discharge port, and a flip-type bottom door with a two-stage locking device is provided at the discharge port. The car roof includes a fixed top cover assembly and a movable top cover assembly set on the fixed top cover assembly.

[0011] Specifically, the base frame is a bottom support frame, the side walls and end walls enclose the surroundings, the funnel encloses the bottom and unloading is achieved through opening and closing, and the rectangular top cover and the circular loading port cover cover the top and loading is achieved through opening and closing.

[0012] In one embodiment, the fixed top cover assembly has a full-length rectangular loading port, and the full-length rectangular loading port is surrounded by double-eared arc-shaped hollow sealing strips for waterproofing and other sealing purposes. The movable top cover assembly includes a rectangular top cover that is pneumatically controlled and can move horizontally at the rectangular loading port. The rectangular top cover has multiple circular loading ports (five circular loading ports are shown in Figure 4), and each circular loading port is equipped with a manually operated circular loading port cover with a locking device. The rectangular top cover and the circular loading port covers cover the top and load cargo by opening and closing. The circular loading ports are used to accommodate loading equipment for powdery goods, and the full-length rectangular loading port is used to accommodate loading equipment for granular bulk goods. A full-length walkway is provided on one side of the vehicle roof to facilitate operators to walk on the vehicle roof and operate the circular loading port covers.

[0013] In one embodiment, a drive shaft device is built into both sides of the roof. Each drive shaft device includes a cylinder hinged between the roof and the end wall. Each cylinder is connected to the pneumatic control system through an air circuit. The pneumatic control system controls the two cylinders to extend or retract synchronously, thereby opening or closing the rectangular top cover to realize the loading operation of granular bulk goods.

[0014] In one embodiment, the locking device includes a rotating support, a rotating shaft, and a handle; the rotating support is disposed on a rectangular top cover near the circular loading port cover, the rotating shaft is rotatably disposed on the rotating support, and the rotating shaft is welded and fixed to the handle.

[0015] The rotating shaft adopts an eccentric design, and the rotating shaft is equipped with a working part for pressing the round loading port cover and a clearance part for avoiding the round loading port cover;

[0016] The rotating shaft includes a U-shaped part in the middle, rotating rods set on the outer sides of the two side walls of the U-shaped part, the outer bottom surface of the U-shaped part is the working part, and the inner groove of the U-shaped part is the clearance part.

[0017] A Z-shaped pressure plate that mates with a U-shaped component is provided on one side of the circular loading port cover. One side of the Z-shaped pressure plate is fixed to the loading port cover, and the other side extends to the bottom of the U-shaped component. When the loading port cover is closed, the working part presses the Z-shaped pressure plate. When the loading port cover is opened, the U-shaped component is rotated and the clearance part is located on the Z-shaped pressure plate.

[0018] The distance from the axis of the rotating rod to the inner bottom of the U-shaped part is L1. The orthographic projection of the axis of the rotating rod onto the Z-shaped pressure plate is the projection line. The distance from the end of the Z-shaped pressure plate to the projection line is L2. The distance L1 is greater than the distance L2. The distance from the axis of the rotating rod to the outer bottom of the U-shaped part is greater than or equal to the distance from the axis of the rotating rod to the Z-shaped pressure plate.

[0019] The inner bottom surface of the U-shaped part is a flat release surface, and the outer bottom surface of the U-shaped part is an arc-shaped locking surface. The locking surface is tangentially engaged with the Z-shaped pressure plate.

[0020] Specifically, the rotating shaft adopts an eccentric design, and there is a certain spatial distance between the rotation axis and the locking surface (i.e., the outer bottom surface of the U-shaped part). The locking surface is arc-shaped, which can effectively reduce friction; the release surface (the inner bottom surface of the U-shaped part) is a flat structure, and when it rotates to the vertical position, it can avoid blocking the end of the Z-shaped pressing plate.

[0021] The ends of the two straight arms of the handle are fixed to the ends of their respective rotating rods by welding. The release surface is perpendicular to the overall handle. The rotating shaft is welded and fixed to the handle. The release surface of the rotating shaft is perpendicular to the handle, forming a 90-degree angle. The rotating shaft rotates along with the handle around the fulcrum of the support seat to realize the locking and opening of the roof loading hatch cover.

[0022] Working principle: When locking the loading hatch cover, place the handle in the vertical position and make the release surface perpendicular to the loading hatch cover. Close the loading hatch cover and rotate the handle outwards. The locking surface (i.e., the outer bottom surface of the U-shaped part) is in a tangent fitting state with the Z-shaped pressing plate and is gradually locked as the rotation angle of the handle increases. When the U-shaped part is in the horizontal position and the lowest point of the locking surface contacts the Z-shaped pressing plate, it is the locking dead point position. At this time, continue to press and rotate the handle, and the loading hatch cover will not accidentally open when locked. When opening the loading hatch cover, rotate the handle upwards, the locking surface rotates away from the pressing plate, and at the same time the release surface avoids the Z-shaped pressing plate to realize the opening of the loading hatch cover.

[0023] In one embodiment, it includes a discharge port main body forming a "mouth" structure. The discharge port main body includes two end funnel plate assemblies arranged horizontally, a first side funnel plate assembly connecting the one-side edges between the two end funnel plate assemblies, and a second side funnel plate assembly connecting the other-side edges between the two end funnel plate assemblies;

[0024] Inner layer sealing structures are arranged on the inner sides of the openings below the first side funnel plate assembly and the second side funnel plate assembly; Outer layer sealing structures are arranged by embedding at the outer sides of the openings below each end funnel plate assembly, the first side funnel plate assembly, and the second side funnel plate assembly. The lowest position of the inner layer sealing structure is lower than the lowest position of the outer layer sealing structure.

[0025] In one embodiment, the end funnel plate assembly includes an end funnel plate, a transverse strengthening beam, a transverse pressing strip, and a transverse sealing strip;

[0026] The two sides of the end funnel plate are respectively connected to the first side funnel plate assembly and the second side funnel plate assembly. The transverse strengthening beam is horizontally arranged outside the opening below the end funnel plate; Threaded holes for installing the transverse pressing strip are provided at the bottom of the transverse strengthening beam. A transverse groove is formed on the lower surface of the bottom of the transverse pressing strip, and the transverse sealing strip is installed in the transverse groove through the installation part; The transverse sealing strip is an outer layer sealing structure, and the transverse sealing strip is a rubber sealing strip with a cross-section in the shape of "Ω";

[0027] In one embodiment, the first side hopper plate assembly includes a first side hopper plate, a first pressing plate, a first longitudinal sealing plate, a first longitudinal sealing strip, a first pressing strip, a first longitudinal reinforcing beam, a first sealing plate, and a first mounting plate;

[0028] The first mounting plate is fixed to the outside of the first side hopper plate through mounting holes, and the first pressing plate and the first longitudinal sealing plate are fixed to the inside of the first side hopper plate through mounting holes. The first pressing plate is used to press the first longitudinal sealing plate. The mounting holes of the first side hopper plate, the first mounting plate, the first pressing plate, and the first longitudinal sealing plate are all centered and aligned, and the four are locked by a bolt assembly;

[0029] The first longitudinal reinforcing beam is arranged in a trough-shaped structure on the outside of the first side hopper plate, and both ends of the first longitudinal reinforcing beam are sealed by two first sealing plates; threaded holes for installing the first pressing strip are uniformly arranged at the bottom of the first longitudinal reinforcing beam, and a first longitudinal groove is formed on the lower surface of the bottom of the first pressing strip. The first longitudinal sealing strip is installed in the first longitudinal groove through a mounting portion;

[0030] The first longitudinal sealing plate is an inner layer sealing structure, and the first longitudinal sealing plate is a rubber sealing plate with a broken line shape of 120° in cross section; the first longitudinal sealing strip is an outer layer sealing structure, and the first longitudinal sealing strip is a rubber sealing strip with a cross section in the shape of "Ω".

[0031] Specifically, the periphery of the "mouth" - shaped hopper has a frame - type outer sealing structure composed of transverse sealing strips and longitudinal sealing strip assemblies. The transverse sealing strip is embedded in the two longitudinal sealing strips. The longitudinal sealing plates arranged along the longitudinal direction of the hopper form an inner layer sealing structure. When the bottom door plate contacts the hopper mouth, it first squeezes the sealing plate and then squeezes the sealing rubber strip. The gaps at the joints are eliminated due to the extrusion of the sealing strips at the four corners of the frame, achieving the sealing effect.

[0032] In one embodiment, the side wall includes side wall plates, two end - side wall connecting plates connected to both ends of the inner wall of the side wall plates, multiple reinforcing beams longitudinally arranged on the inner wall of the side wall plates to increase the stiffness of the side wall plates, two first partition assemblies arranged between the two end - side wall connecting plates, a second partition assembly arranged between the two first partition assemblies, and several mounting beam assemblies; the ends of the reinforcing beams are connected to the first partition assembly, the second partition assembly, or the end - side wall connecting plates; several mounting beam assemblies are arranged between the frames formed by the two side wall plates;

[0033] The end wall connecting plates are arranged at a certain angle at both ends of the side wall panel; it also includes an upper side beam, which is attached to the upper edge of the side wall panel. The upper parts of the first partition wall assembly and the second partition wall assembly are both connected to the upper side beam; the cross-section of the side wall panel includes a middle straight segment, an upper straight segment, and a lower straight segment. An upper arc segment is provided between the middle straight segment and the upper straight segment to increase the rigidity of the side wall panel itself. A lower arc segment is provided between the middle straight segment and the lower straight segment to increase the rigidity of the side wall panel itself. The bottom of the lower straight segment is connected to the funnel assembly in the form of a straight segment; an upper arc segment with a radius greater than one meter is provided between the middle straight segment and the upper straight segment to increase the rigidity of the side wall panel itself; a lower arc segment with a radius greater than four meters is provided between the middle straight segment and the lower straight segment to increase the rigidity of the side wall panel itself.

[0034] Specifically, several partition wall components, mounting beam components, and reinforcing beams are installed between the side walls. This improves the side walls' resistance to external expansion deformation while minimizing the thickness of the plate material in each component, achieving a lightweight vehicle design. Several reinforcing beams evenly distributed longitudinally along the side wall panels effectively address structural instability and deformation issues that may occur when the vehicle is subjected to longitudinal impacts. The use of upper side beams not only reduces the vehicle's weight but also reduces the interior volume occupied by the irregularly shaped upper side beams, increasing the overall vehicle volume. The side wall panels adopt a cross-sectional design combining arcs and straight lines. The upper, middle, and lower sections are straight, maximizing the use of vehicle clearance. The straight sections are connected by two arcs of different radii, increasing the side wall panel's rigidity and simultaneously increasing the vehicle's volume.

[0035] In one embodiment, the bottom door includes two symmetrically arranged bottom door assemblies, a bearing mounting seat assembly, a drive shaft assembly, a hydraulic cylinder, and a hydraulic cylinder mounting seat; the drive shaft assembly is located in the middle of the vehicle bottom, and the two bottom door assemblies are symmetrically arranged on both sides of the drive shaft assembly. The two bottom door assemblies are arranged longitudinally along the vehicle body and are movably connected to the drive shaft assembly.

[0036] The bearing mounting bracket assembly is fixed to the bottom of the vehicle body and is placed at both ends of the drive shaft assembly, and is connected to the drive shaft assembly by fasteners; the hydraulic cylinder mounting bracket is fixed on the middle beam assembly, one end of the hydraulic cylinder is connected to the hydraulic cylinder mounting bracket by a hinge, and the other end is connected to the drive shaft assembly by a hinge; the secondary locking device works with the drive shaft assembly to prevent the bottom door from being opened accidentally.

[0037] Specifically, a transmission mechanism with over-dead-point capability is employed, giving the bottom door a self-locking function to prevent accidental opening. A hydraulic control system drives the bottom door's opening and closing, eliminating the need for dedicated ground facilities, reducing manufacturing costs. The hydraulic control system also provides a secondary guarantee against accidental opening. A locking device is installed on the main shaft, working in conjunction with a manually operated secondary locking mechanism, providing triple protection against accidental opening of the bottom door.

[0038] In one embodiment, the secondary locking device includes a handle assembly, a first pull rod assembly, a lever fulcrum assembly, a second pull rod assembly, a rotating shaft assembly, a spring seat, a spring, a third pull rod assembly, and a locking lever assembly;

[0039] The handle assembly is fixed on both sides of the underframe, the lever fulcrum assembly is fixed under the vehicle, both ends of the first pull rod assembly are movably connected to the handle assembly and the lever fulcrum assembly through pin shafts respectively, the second pull rod assembly is movably connected to the rotating shaft assembly through a pin shaft, the spring seat is fixed in the middle of the underframe, one end of the spring is sleeved in the spring seat, and the other end is connected to the rotating shaft assembly, and the third pull rod assembly is movably connected to the rotating shaft assembly and the locking lever assembly through pin shafts respectively.

[0040] Specifically, when the bottom door is opened, rotate the handle to a certain angle, the handle drives the first pull rod assembly and the second pull rod assembly to move, thereby driving the rotating shaft assembly to rotate, further driving the third pull rod assembly to move, and finally driving the locking lever assembly to rotate away from the main shaft locking block. At this time, the secondary locking mechanism is unlocked. After the bottom door is successfully opened, the handle is returned to its original position to lock the secondary locking mechanism.

[0041] When the bottom door is closed, the secondary locking mechanism needs to be unlocked first, that is, rotate the handle to a certain angle, the handle drives the first pull rod assembly and the second pull rod assembly to move, thereby driving the rotating shaft assembly to rotate, further driving the third pull rod assembly to move, and finally driving the locking lever assembly to rotate away from the main shaft locking block. At this time, the secondary locking mechanism is unlocked. After the bottom door is successfully closed, the handle is returned to its original position to lock the secondary locking mechanism.

[0042] The beneficial effects of the present invention are as follows:

[0043] 1. The present invention innovatively designs a railway hopper car for transporting fine granular powdery goods, aiming at the sealing of powdery goods. An "open" - shaped inner and outer double - layer sealing structure is innovatively adopted at the unloading port. When the door panel contacts the hopper opening, it first squeezes the inner - layer sealing structure and then the outer - layer sealing structure. Due to the squeezing of the outer - layer sealing structure at the four corners of the frame, the gaps at the joints are eliminated, achieving the sealing effect. It can not only meet the sealing requirements for the transportation of bulk goods but also meet the sealing requirements for the transportation of fine granular powdery goods.

[0044] 2. A through - length rectangular loading port is provided on the roof of the car, and the opening and closing of the rectangular top cover are pneumatically controlled. A circular loading port is provided on the rectangular top cover, and an eccentric manual lock is provided on the circular top cover to control the opening and closing of the circular top cover manually. These two forms of loading ports can meet the requirements of different loading equipment, and the loading method is flexible.

[0045] 3. To increase vehicle volume and reduce vehicle weight, an innovative combination of curved and straight cross-sections is adopted for the side wall panels. The upper, middle, and lower sections are straight, maximizing the use of locomotive and rolling stock clearance. Two curved sections with different radii are used to connect the straight sections, increasing the rigidity of the side wall panels and simultaneously increasing vehicle volume. An internal L-shaped upper side beam not only reduces vehicle weight but also minimizes the interior space occupied by the irregularly shaped upper side beam, thus increasing the overall vehicle volume.

[0046] 4. The bottom door employs a transmission mechanism with over-dead-point, giving it a self-locking function to prevent accidental opening. The bottom door is driven by a hydraulic control system, eliminating the need for dedicated ground facilities, reducing manufacturing costs. The hydraulic control system also provides a secondary guarantee against accidental opening. A locking device is installed on the bottom door's transmission shaft, working in conjunction with a manually operated secondary locking mechanism, providing triple protection against accidental opening. Attached Figure Description

[0047] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0048] Figure 1 is a front view of a railway hopper car structure for transporting powdery goods provided by the present invention;

[0049] Figure 2 is a front view of the vehicle body structure;

[0050] Figure 3 is a structural front view of the top cover and transmission device;

[0051] Figure 4 is a top view of the top cover and transmission mechanism;

[0052] Figure 5 is a schematic diagram of the circular loading port cover locking device;

[0053] Figure 6 is a top view of the funnel;

[0054] Figure 7 is an AA view of the funnel;

[0055] Figure 8 is a schematic diagram of the funnel structure;

[0056] Figure 9 is a structural schematic diagram of the funnel plate assembly;

[0057] Figure 10 is a structural schematic diagram of the first side funnel plate assembly;

[0058] Figure 11 is a left view of the hidden cover plate of the first side funnel plate assembly;

[0059] Figure 12 is a structural schematic diagram of the sidewall assembly;

[0060] Figure 13 is a structural schematic diagram of the side wall panel;

[0061] Figure 14 is a structural schematic diagram of the bottom door assembly;

[0062] Figure 15 is a schematic diagram of the closed bottom door structure;

[0063] Figure 16 is a schematic diagram of the bottom door opening structure;

[0064] Figure 17 is a schematic diagram of the two-stage locking device;

[0065] Figure 18 is a schematic diagram of the enlarged structure of the secondary locking device from direction A.

[0066] Figure 19 is a schematic diagram of the structure of the double-eared arc-shaped hollow sealing strip;

[0067] Reference numerals: 1-Car body, 2-Pneumatic control system, 3-Coupled buffer device, 4-Air brake device, 5-Manual brake device, 6-Bogie, 7-Hydraulic control system, 8-Tilt-type bottom door, 9-Secondary locking device;

[0068] 11-Base frame, 12-Function funnel, 13-Side wall, 14-End wall, 15-Roof;

[0069] 121 - End funnel plate assembly, 122 - First side funnel plate assembly, 123 - Second side funnel plate assembly;

[0070] 1211 - End funnel plate, 121 - Transverse reinforcing beam, 1213 - Transverse pressure strip, 1214 - Transverse sealing strip (1214);

[0071] 1221-First side funnel plate, 1222-First pressure plate, 1223-First longitudinal sealing plate, 1224-First longitudinal sealing strip, 1225-First pressure strip, 1226-First longitudinal reinforcing beam, 1227-First sealing plate, 1228-First mounting plate;

[0072] 131-Side wall panel, 132-End side wall connecting plate, 133-Upper side beam, 134-Reinforcing beam, 135-First partition wall, 136-Second partition wall assembly, 137-Mounting beam assembly;

[0073] 151-Rectangular top cover, 152-Locking device, 153-Circular loading port cover, 154-Walkway, 155-Drive shaft device;

[0074] 1521-Rotating support, 1522-Rotating shaft, 1523-Handle;

[0075] 81-Bottom door assembly, 82-Bearing mounting bracket assembly, 83-Drive shaft assembly, 84-Hydraulic cylinder, 85-Hydraulic cylinder mounting bracket;

[0076] 91-Handle assembly, 92-First pull rod assembly, 93-Lever fulcrum assembly, 94-Second pull rod assembly, 95-Rotating shaft assembly, 96-Tension spring seat, 97-Tension spring, 98-Third pull rod assembly, 99-Locking lever assembly. Detailed Implementation

[0077] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0078] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0079] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0080] In the description of the embodiments of the present invention, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation.

[0081] It should also be noted that, unless otherwise explicitly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances, and therefore they should not be construed as limitations on this invention.

[0082] As shown in Figures 1 to 19, this embodiment provides a railway hopper car for transporting powdery goods, including a car body 1, a pneumatic control system 2, a coupler buffer device 3, an air brake device 4, a manual brake device 5, and a bogie 6. A hydraulic control system 7 is provided at the lower part of the car body. The car body 1 includes a chassis 11, and two hoppers 12 with double sealing structures are provided at the bottom of the chassis 11. The two hoppers 12 are distributed on both sides of the middle beam of the chassis 11. Two side walls 13 are provided on both sides of the chassis 11, and end walls 14 are provided at both ends of the two side walls 13. A car roof 15 is provided on the upper part of the side walls 13 and the end walls 14. A loading port is provided at the bottom of the hoppers 12, and a flip-type bottom door 8 with a two-stage locking device 9 is provided at the loading port. The car roof 15 includes a fixed top cover assembly and a movable top cover assembly provided on the fixed top cover assembly.

[0083] Specifically, the base frame is a bottom support frame, the side walls and end walls enclose the surroundings, the funnel encloses the bottom and unloading is achieved through opening and closing, and the rectangular top cover and the circular loading port cover cover the top and loading is achieved through opening and closing.

[0084] In one embodiment, the fixed top cover assembly is provided with a full-length rectangular loading port, and the full-length rectangular loading port is surrounded by double-eared arc-shaped hollow sealing strips for waterproofing and other sealing purposes. The movable top cover assembly includes a rectangular top cover 151 that is pneumatically controlled and can move horizontally at the rectangular loading port. The rectangular top cover 151 is provided with multiple circular loading ports (five in Figure 4). Each circular loading port is provided with a manually operated circular loading port cover 153 with a locking device 152. The rectangular top cover 151 and the circular loading port cover 153 cover the top and loading is achieved by opening and closing. The circular loading ports are used to accommodate loading equipment for powdery goods, and the full-length rectangular loading port is used to accommodate loading equipment for granular bulk goods. A full-length walkway 154 is provided on one side of the roof 15 to facilitate operators to walk on the roof and operate the circular loading port cover 153.

[0085] In one embodiment, the double-eared arc-shaped hollow sealing strip includes an arc-shaped portion, a snap-fit ​​portion connected to the bottom of the arc-shaped portion, and a non-circular auxiliary sealing element disposed on the top of the arc-shaped portion and in contact with the rectangular top cover 151, which has a rainproof function. The snap-fit ​​portion is connected to the pressure strip by a sealing embedding method, and the pressure strip is installed on the top of the mounting base. The arc-shaped portion has a hollow part inside, the bottom of the arc-shaped portion is a bottom plane, and the top of the arc-shaped portion is a top convex arc-shaped surface. The non-circular auxiliary sealing element is located on the top convex arc-shaped surface, and the snap-fit ​​portion is connected to the bottom plane through a connecting portion.

[0086] Specifically, the curved section has a hollow section inside, which improves the compression deformation capacity between the sealing strip and the top plate, as well as the recovery capacity of the sealing strip.

[0087] The pressure strip is long and narrow, with a two-tiered stepped groove (smaller at the top and larger at the bottom) cut along its length on its upper surface. The engaging part is shaped to fit the bottom groove of the two-tiered stepped groove. The bottom groove of the two-tiered stepped groove has several serrated first anti-slip teeth inside, and the outer surface of the engaging part has several serrated second anti-slip teeth. The first and second anti-slip teeth mesh with each other.

[0088] Specifically, a serrated mounting base is used to increase friction with the mounting surface, improving the anti-slip performance of the sealing strip. An embedded installation method is employed, allowing for easy removal and installation by pulling along the length of the sealing strip, reducing labor intensity.

[0089] The hollow sealing strip also includes a side rainproof skirt that is vulcanized integrally with the arc-shaped portion, and the side rainproof skirt is connected to one side of the bottom of the arc-shaped portion. The irregular auxiliary sealing element includes a left upper rainproof edge and a right upper rainproof edge. The connection points between the left upper rainproof edge and the right upper rainproof edge and the top of the arc-shaped portion are arc-shaped strips. The free ends of both arc-shaped strips are provided with bends in the same direction, and the bends are in sealing contact with the top plate. The side rainproof skirt includes an inclined plate connected to the arc-shaped portion and a vertical plate connected to the inclined plate. The bottom of the vertical plate is lower than the top of the mounting base.

[0090] Specifically, the snap-fit ​​part is installed inside the pressure strip, and the top plate squeezes the hollow sealing strip, compressing the upper left rainproof edge, the arc-shaped part, and the upper right rainproof edge by a certain amount to achieve a sealing effect.

[0091] In one embodiment, a drive shaft device 155 is built into both sides of the roof 15. Each drive shaft device 155 includes a cylinder hinged between the roof 15 and the end wall 14. Each cylinder is connected to the pneumatic control system 2 through an air circuit. The pneumatic control system 2 controls the two cylinders to extend or retract synchronously, thereby opening or closing the rectangular top cover 151 to realize the loading operation of granular bulk goods.

[0092] In one embodiment, the locking device includes a rotating support 1521, a rotating shaft 1522, and a handle 1523; the rotating support 1521 is disposed on a rectangular top cover 151 near the circular loading port cover 153, the rotating shaft 1522 is rotatably disposed on the rotating support 1521, and the rotating shaft 1522 is welded and fixed to the handle 1523.

[0093] The rotating shaft 1522 adopts an eccentric design. The rotating shaft 1522 is provided with a working part for pressing the circular loading port cover 153 and a clearance part for avoiding the circular loading port cover 153.

[0094] The rotating shaft 1522 includes a U-shaped part in the middle and rotating rods set on the outer sides of the two side walls of the U-shaped part. The outer bottom surface of the U-shaped part is the working part, and the inner groove of the U-shaped part is the clearance part.

[0095] A Z-shaped pressure plate that mates with the U-shaped part is provided on one side of the circular loading hatch cover 153. One side of the Z-shaped pressure plate is fixed to the loading hatch cover, and the other side extends below the U-shaped part. When the loading hatch cover is closed, the working part presses the Z-shaped pressure plate. When the loading hatch cover is opened, the U-shaped part is rotated, and the避让部 (it's not clear what this specific term "避让部" means here, it might be a misspelling or a specialized term not fully defined. For now, I'll keep it as is) is located at the Z-shaped pressure plate;

[0096] The distance from the axis of the rotating rod to the inner bottom surface of the U-shaped part is L1. The position of the projection of the axis of the rotating rod on the Z-shaped pressure plate is the projection line. The distance from the end of the Z-shaped pressure plate to the projection line is L2, and the distance L1 is greater than the distance L2; the distance from the axis of the rotating rod to the outer bottom surface of the U-shaped part is greater than or equal to the distance from the axis of the rotating rod to the Z-shaped pressure plate;

[0097] The inner bottom surface of the U-shaped part is a planar release surface, and the outer bottom surface of the U-shaped part is an arc-shaped locking surface. The locking surface is in a tangential mating state with the Z-shaped pressure plate.

[0098] Specifically, the rotating shaft is designed eccentrically. There is a certain spatial distance between the rotation center and the locking surface, that is, the outer bottom surface of the U-shaped part. The locking surface is arc-shaped, which can effectively reduce friction; the release surface, the inner bottom surface of the U-shaped part, is a planar structure. When it rotates to the vertical position, it can avoid blocking the end of the Z-shaped pressure plate.

[0099] The ends of the two straight arms of the handle are fixed to the corresponding ends of the rotating rod by welding. The release surface is perpendicular to the overall handle. The rotating shaft is welded and fixed to the handle. The release surface of the rotating shaft is perpendicular to the handle, forming a 90-degree angle. The rotating shaft rotates along with the handle around the fulcrum of the support seat to achieve the locking and opening of the roof loading hatch cover.

[0100] Working principle: When locking the loading hatch cover, place the handle in the vertical position and make the release surface perpendicular to the loading hatch cover. Close the loading hatch cover and rotate the handle outward. The locking surface, that is, the outer bottom surface of the U-shaped part, is in a tangential mating state with the Z-shaped pressure plate and gradually locks as the rotation angle of the handle increases. When the U-shaped part is in the horizontal position and the lowest point of the locking surface contacts the Z-shaped pressure plate, it is the locking dead point position. At this time, continue to press and rotate the handle, and the loading hatch cover will not accidentally open when locked. When opening the loading hatch cover, rotate the handle upward. The locking surface rotates away from the pressure plate, and at the same time, the release surface避开 (again, not clear what this "避开" means exactly, might be a misspelling or a specialized term) the Z-shaped pressure plate to achieve the opening of the loading hatch cover.

[0101] In one embodiment, it includes a discharge port main body forming a "mouth" - shaped structure. The discharge port main body includes two end funnel plate assemblies 121 arranged horizontally, a first side funnel plate assembly 122 connecting the one - side edges of the two end funnel plate assemblies 121, and a second side funnel plate assembly 123 connecting the other - side edges of the two end funnel plate assemblies 121;

[0102] An inner sealing structure is provided on the inner side of the lower opening of the first funnel plate assembly 122 and the second funnel plate assembly 123; an outer sealing structure is provided on the outer side of the lower opening of each end funnel plate assembly 121, the first funnel plate assembly 122 and the second funnel plate assembly 123 in an inlay manner, and the lowest position of the inner sealing structure is lower than the lowest position of the outer sealing structure.

[0103] In one embodiment, the end funnel plate assembly 121 includes an end funnel plate 1211, a transverse reinforcing beam 1212, a transverse pressure strip 1213, and a transverse sealing strip 1214.

[0104] The end funnel plate 1211 is connected to the first side funnel plate assembly 122 and the second side funnel plate assembly 123 on both sides respectively. The transverse reinforcing beam 1212 is transversely arranged on the outside of the opening below the end funnel plate 1211. The bottom of the transverse reinforcing beam 1212 is provided with a threaded hole for installing the transverse pressure strip 1213. The lower surface of the bottom of the transverse pressure strip 1213 is provided with a transverse groove. The transverse sealing strip 1214 is installed in the transverse groove through the mounting part. The transverse sealing strip 1214 is an outer sealing structure. The transverse sealing strip 1214 is a rubber sealing strip with an "Ω" shaped cross section.

[0105] In one embodiment, the first side funnel plate assembly 122 includes a first side funnel plate 1221, a first pressure plate 1222, a first longitudinal sealing plate 1223, a first longitudinal sealing strip 1224, a first pressure strip 1225, a first longitudinal reinforcing beam 1226, a first sealing plate 1227, and a first mounting plate 1228.

[0106] The first mounting plate 1228 is fixed to the outside of the first side funnel plate 1221 through mounting holes. The first pressure plate 1222 and the first longitudinal sealing plate 1223 are fixed to the inside of the first side funnel plate 1221 through mounting holes. The first pressure plate 1222 is used to press the first longitudinal sealing plate 1223. The mounting holes of the first side funnel plate 1221, the first mounting plate 1228, the first pressure plate 1222 and the first longitudinal sealing plate 1223 are all centered and locked together by bolt assembly.

[0107] The first longitudinal reinforcing beam 1226 is a groove-shaped structure located on the outside of the first side funnel plate 1221. Both ends of the first longitudinal reinforcing beam 1226 are sealed by two first sealing plates 1227. The bottom of the first longitudinal reinforcing beam 1226 is evenly provided with threaded holes for installing the first pressure strip 1225. The bottom lower surface of the first pressure strip 1225 is provided with a first longitudinal groove. The first longitudinal sealing strip 1224 is installed in the first longitudinal groove through the mounting part.

[0108] The first longitudinal sealing plate 1223 is an inner sealing structure, and the first longitudinal sealing plate 1223 is a rubber sealing plate with a broken line shape having a cross-section of 120°; the first longitudinal sealing strip 1224 is an outer sealing structure, and the first longitudinal sealing strip 1224 is a rubber sealing strip with a cross-section in the shape of "Ω".

[0109] Specifically, the periphery of the "mouth" - shaped funnel is provided with a frame - type outer sealing structure composed of transverse sealing strips and longitudinal sealing strip assemblies. The transverse sealing strip is embedded within two longitudinal sealing strips. The longitudinal sealing plates arranged along the longitudinal direction of the funnel form an inner sealing structure. When the bottom door plate contacts the funnel opening, it first presses the sealing plate and then presses the sealing rubber strip. The gaps at the joints are eliminated due to the extrusion of the sealing strips at the four corners of the frame, achieving the sealing effect.

[0110] In one embodiment, the side wall 13 includes a side wall plate 131, two end - side wall connecting plates 132 connected to both ends of the inner wall of the side wall plate 131, multiple reinforcing beams 134 longitudinally arranged on the inner wall of the side wall plate 131 to increase the stiffness of the side wall plate 131, two first partition wall assemblies 135 arranged between the two end - side wall connecting plates 132, a second partition wall assembly 136 arranged between the two first partition wall assemblies 135, and several installation beam assemblies 137; the ends of the reinforcing beams 134 are connected to the first partition wall assembly 135, the second partition wall assembly 136, or the end - side wall connecting plate 132; several installation beam assemblies 137 are arranged within the frame formed by the two side wall plates 131;

[0111] The end - side wall connecting plates 132 are obliquely arranged at a certain angle at both ends of the side wall plate 131; it further includes an upper side beam 133, and the upper side beam 133 is attached to the upper edge of the side wall plate 131. The upper parts of both the first partition wall assembly 135 and the second partition wall assembly 136 are connected to the upper side beam 133; the cross - section of the side wall plate 131 includes a middle straight segment, an upper straight segment, and a lower straight segment. An upper arc segment for increasing the self - stiffness of the side wall plate 131 is provided between the middle straight segment and the upper straight segment, and a lower arc segment for increasing the self - stiffness of the side wall plate 131 is provided between the middle straight segment and the lower straight segment. The bottom of the lower straight segment is connected to the funnel assembly in a straight - segment form; an upper arc segment for increasing the self - stiffness of the side wall plate 131 and having a radius greater than one meter is provided between the middle straight segment and the upper straight segment; a lower arc segment for increasing the self - stiffness of the side wall plate 131 and having a radius greater than four meters is provided between the middle straight segment and the lower straight segment.

[0112] Specifically, several partition wall components, mounting beam components, and reinforcing beams are installed between the side walls. This improves the side walls' resistance to external expansion deformation while minimizing the thickness of the plate material in each component, achieving a lightweight vehicle design. Several reinforcing beams evenly distributed longitudinally along the side wall panels effectively address structural instability and deformation issues that may occur when the vehicle is subjected to longitudinal impacts. The use of upper side beams not only reduces the vehicle's weight but also reduces the interior volume occupied by the irregularly shaped upper side beams, increasing the overall vehicle volume. The side wall panels adopt a cross-sectional design combining arcs and straight lines. The upper, middle, and lower sections are straight, maximizing the use of vehicle clearance. The straight sections are connected by two arcs of different radii, increasing the side wall panel's rigidity and simultaneously increasing the vehicle's volume.

[0113] In one embodiment, the bottom door 8 includes two symmetrically arranged bottom door assemblies 81, a bearing mounting seat assembly 82, a drive shaft assembly 83, a hydraulic cylinder 84, and a hydraulic cylinder mounting seat 85; the drive shaft assembly 83 is located in the middle of the vehicle bottom, and the two bottom door assemblies 81 are symmetrically arranged on both sides of the drive shaft assembly 83. The two bottom door assemblies 81 are arranged longitudinally along the vehicle body and are movably connected to the drive shaft assembly 83.

[0114] The bearing mounting bracket assembly 82 is fixed to the bottom of the vehicle body and is placed at both ends of the drive shaft assembly 83 and connected to the drive shaft assembly 83 by fasteners; the hydraulic cylinder mounting bracket 85 is fixed on the middle beam assembly, one end of the hydraulic cylinder 84 is connected to the hydraulic cylinder mounting bracket 85 by a hinge, and the other end is connected to the drive shaft assembly 83 by a hinge; the secondary locking device 9 cooperates with the drive shaft assembly 83 to prevent the bottom door from being opened accidentally.

[0115] Specifically, a transmission mechanism with over-dead-point capability is employed, giving the bottom door a self-locking function to prevent accidental opening. A hydraulic control system drives the bottom door's opening and closing, eliminating the need for dedicated ground facilities, reducing manufacturing costs. The hydraulic control system also provides a secondary guarantee against accidental opening. A locking device is installed on the main shaft, working in conjunction with a manually operated secondary locking mechanism, providing triple protection against accidental opening of the bottom door.

[0116] In one embodiment, the secondary locking device 9 includes a handle assembly 91, a first pull rod assembly 92, a lever fulcrum assembly 93, a second pull rod assembly 94, a rotating shaft assembly 95, a tension spring seat 96, a tension spring 97, a third pull rod assembly 98, and a locking lever assembly 99.

[0117] The handle assembly 91 is fixed to both sides of the base frame, the lever fulcrum assembly 93 is fixed to the bottom of the vehicle, the two ends of the first pull rod assembly 92 are movably connected to the handle assembly 91 and the lever fulcrum assembly 93 respectively via pins, the second pull rod assembly 94 is movably connected to the rotating shaft assembly 95 via pins, the tension spring seat 96 is fixed to the middle of the base frame, one end of the tension spring 97 is fitted into the tension spring seat 96, and the other end is connected to the rotating shaft assembly 95, and the third pull rod assembly 98 is movably connected to the rotating shaft assembly 95 and the locking lever assembly 99 respectively via pins.

[0118] Specifically, when the bottom door is opened, rotating the handle to a certain angle causes the first and second pull rod assemblies to move, which in turn causes the rotating shaft assembly to rotate, which in turn causes the third pull rod assembly to move, and finally causes the locking lever assembly to rotate and disengage from the main shaft locking block. At this time, the secondary locking mechanism is unlocked, and after the bottom door is successfully opened, the handle is returned to its original position to lock the secondary locking mechanism.

[0119] When the bottom door is closed, the secondary locking mechanism must first be unlocked. This is done by rotating the handle to a certain angle. The handle moves the first and second pull rod assemblies, which in turn rotates the rotating shaft assembly, causing the third pull rod assembly to move. Finally, the locking lever assembly rotates and disengages from the main shaft locking block. At this point, the secondary locking mechanism is unlocked, and the bottom door closes smoothly. Then, the handle is returned to its original position to lock the secondary locking mechanism.

Claims

1. A railway hopper car for transporting powdery goods, comprising a car body (1), a pneumatic control system (2), a coupler buffer device (3), an air brake device (4), a manual brake device (5), and a bogie (6), wherein a hydraulic control system (7) is provided at the lower part of the car body, characterized in that, The vehicle body (1) includes a chassis (11), and two funnels (12) with double sealing structures are provided at the bottom of the chassis (11). The two funnels (12) are distributed on both sides of the middle beam of the chassis (11). Two side walls (13) are provided on both sides of the chassis (11). End walls (14) are provided at both ends of the two side walls (13). A roof (15) is provided on the upper part of the side walls (13) and the end walls (14). A loading port is provided at the bottom of the funnels (12). A flip-type bottom door (8) with a two-stage locking device (9) is provided at the loading port. The roof (15) includes a fixed top cover assembly and a movable top cover assembly provided on the fixed top cover assembly.

2. A railway hopper car for transporting powdered goods according to claim 1, characterized in that, The fixed top cover assembly is provided with a full-length rectangular loading port, and the full-length rectangular loading port is provided with double-eared arc-shaped hollow sealing strips around its perimeter. The movable top cover assembly includes a rectangular top cover (151) that is pneumatically controlled and can move horizontally at the rectangular loading port. The rectangular top cover (151) is provided with multiple circular loading ports, and each circular loading port is provided with a manually operated circular loading port cover (153) with a locking device (152). A full-length walkway (154) is provided on one side of the roof (15).

3. A railway hopper car for transporting powdered goods according to claim 2, characterized in that, Both sides of the roof (15) are equipped with drive shaft devices (155). Each drive shaft device (155) includes a cylinder hinged between the roof (15) and the end wall (14). Each cylinder is connected to the pneumatic control system (2) through an air circuit. The pneumatic control system (2) controls the two cylinders to extend or retract synchronously, thereby driving the rectangular top cover (151) to open or close.

4. A railway hopper car for transporting powdery goods according to claim 2, characterized in that, The locking device includes a rotating support (1521), a rotating shaft (1522), and a handle (1523); the rotating support (1521) is mounted on a rectangular top cover (151) near the circular loading port cover (153), the rotating shaft (1522) is rotatably mounted on the rotating support (1521), and the rotating shaft (1522) is welded and fixed to the handle (1523); The rotating shaft (1522) adopts an eccentric design. The rotating shaft (1522) is provided with a working part for pressing the circular loading port cover (153) and a clearance part for avoiding the circular loading port cover (153). The rotating shaft (1522) includes a U-shaped part in the middle and rotating rods arranged on the outer sides of the two side walls of the U-shaped part. The outer bottom surface of the U-shaped part is the working part, and the inner groove of the U-shaped part is the clearance part. A Z-shaped pressure plate that mates with a U-shaped part is provided on one side of the round loading port cover (153). One side of the Z-shaped pressure plate is fixed on the loading port cover, and the other side extends to the bottom of the U-shaped part. When the loading port cover is closed, the working part presses the Z-shaped pressure plate. When the loading port cover is opened, the U-shaped part is rotated and the clearance part is located on the Z-shaped pressure plate. The distance from the axis of the rotating rod to the inner bottom surface of the U-shaped part is L1. The position of the axis of the rotating rod on the Z-shaped pressing plate is the projection line, and the distance from the end of the Z-shaped pressing plate to the projection line is L2. The distance L1 is greater than the distance L2. The distance from the axis of the rotating rod to the outer bottom surface of the U-shaped part is greater than or equal to the distance from the axis of the rotating rod to the Z-shaped pressing plate. The inner bottom surface of the U-shaped part is a planar release surface, and the outer bottom surface of the U-shaped part is an arc-shaped locking surface. The locking surface is in a tangent fit state with the Z-shaped pressing plate.

5. A railway hopper car for transporting powdery goods according to claim 2, characterized in that, It includes a discharge port body forming a "mouth" structure. The discharge port body includes two end funnel plate assemblies (121) arranged horizontally, a first side funnel plate assembly (122) connecting the side edges of the two end funnel plate assemblies (121), and a second side funnel plate assembly (123) connecting the other side edges of the two end funnel plate assemblies (121). Inner layer sealing structures are provided on the inner sides of the openings below the first side funnel plate assembly (122) and the second side funnel plate assembly (123). Outer layer sealing structures are provided on the outer sides of the openings below each end funnel plate assembly (121), the first side funnel plate assembly (122), and the second side funnel plate assembly (123) in an embedded form. The lowest position of the inner layer sealing structure is lower than the lowest position of the outer layer sealing structure.

6. A railway hopper car for transporting powdered goods according to claim 5, characterized in that, The end funnel plate assembly (121) includes an end funnel plate (1211), a transverse reinforcing beam (1212), a transverse pressing strip (1213), and a transverse sealing strip (1214). Both sides of the end funnel plate (1211) are respectively connected to the first side funnel plate assembly (122) and the second side funnel plate assembly (123). The transverse reinforcing beam (1212) is horizontally arranged on the outer side of the opening below the end funnel plate (1211). Threaded holes for installing the transverse pressing strip (1213) are provided at the bottom of the transverse reinforcing beam (1212). A transverse groove is formed on the lower surface of the bottom of the transverse pressing strip (1213). The transverse sealing strip (1214) is installed in the transverse groove through the installation part. The transverse sealing strip (1214) is an outer layer sealing structure, and the transverse sealing strip (1214) is a rubber sealing strip with a cross-section in the shape of "Ω".

7. A railway hopper car for transporting powdered goods according to claim 5, characterized in that, The first side funnel plate assembly (122) includes a first side funnel plate (1221), a first pressing plate (1222), a first longitudinal sealing plate (1223), a first longitudinal sealing strip (1224), a first pressing strip (1225), a first longitudinal reinforcing beam (1226), a first sealing plate (1227), and a first mounting plate (1228). The first mounting plate (1228) is fixed to the outside of the first side funnel plate (1221) through mounting holes. The first pressure plate (1222) and the first longitudinal sealing plate (1223) are fixed to the inside of the first side funnel plate (1221) through mounting holes. The first pressure plate (1222) is used to press the first longitudinal sealing plate (1223). The mounting holes of the first side funnel plate (1221), the first mounting plate (1228), the first pressure plate (1222) and the first longitudinal sealing plate (1223) are all centered and locked together by bolt assembly. The first longitudinal reinforcing beam (1226) is arranged in a groove-shaped structure on the outside of the first side funnel plate (1221). The two ends of the first longitudinal reinforcing beam (1226) are sealed by two first sealing plates (1227). The bottom of the first longitudinal reinforcing beam (1226) is uniformly provided with threaded holes for installing the first pressure strip (1225). The bottom lower surface of the first pressure strip (1225) is provided with a first longitudinal groove. The first longitudinal sealing strip (1224) is installed in the first longitudinal groove through the mounting part. The first longitudinal sealing plate (1223) is an inner sealing structure, and the first longitudinal sealing plate (1223) is a zigzag rubber sealing plate with a cross section of 120°; the first longitudinal sealing strip (1224) is an outer sealing structure, and the first longitudinal sealing strip (1224) is a rubber sealing strip with a cross section of "Ω".

8. A railway hopper car for transporting powdery goods according to claim 1, characterized in that, The side wall (13) includes a side wall panel (131), two end side wall connecting plates (132) connected to both ends of the inner wall of the side wall panel (131), a plurality of reinforcing beams (134) arranged longitudinally on the inner wall of the side wall panel (131) to increase the stiffness of the side wall panel (131), two first partition wall assemblies (135) arranged between the two end side wall connecting plates (132), a second partition wall assembly (136) arranged between the two first partition wall assemblies (135), and a plurality of mounting beam assemblies (137); the ends of the reinforcing beams (134) are connected to the first partition wall assembly (135), the second partition wall assembly (136), or the end side wall connecting plates (132); the plurality of mounting beam assemblies (137) are arranged between the frames formed by the two side wall panels (131); The end wall connecting plate (132) is obliquely arranged at a certain angle at both ends of the side wall plate (131); it also includes an upper side beam (133), which is attached to the upper edge of the side wall plate (131), and the upper parts of the first partition wall assembly (135) and the second partition wall assembly (136) are both connected to the upper side beam (133); the cross-section of the side wall plate (131) includes a middle straight segment, an upper straight segment and a lower straight segment, and a space for increasing the side wall plate (131) is provided between the middle straight segment and the upper straight segment. The upper arc segment with self-stiffness is provided between the middle straight segment and the lower straight segment to increase the self-stiffness of the side wall panel (131). The bottom of the lower straight segment is connected to the funnel assembly in the form of a straight segment. An upper arc segment with a radius greater than one meter is provided between the middle straight segment and the upper straight segment to increase the self-stiffness of the side wall panel (131). A lower arc segment with a radius greater than four meters is provided between the middle straight segment and the lower straight segment to increase the self-stiffness of the side wall panel (131).

9. A railway hopper car for transporting powdery goods according to claim 1, characterized in that, The bottom door (8) includes two symmetrically arranged bottom door assemblies (81), a bearing mounting seat assembly (82), a drive shaft assembly (83), a hydraulic cylinder (84), and a hydraulic cylinder mounting seat (85); the drive shaft assembly (83) is located in the middle of the vehicle bottom, and the two bottom door assemblies (81) are symmetrically arranged on both sides of the drive shaft assembly (83). The two bottom door assemblies (81) are arranged longitudinally along the vehicle body and are movably connected to the drive shaft assembly (83); The bearing mounting bracket assembly (82) is fixed to the bottom of the vehicle body. The bearing mounting bracket assembly (82) is placed at both ends of the drive shaft assembly (83) and connected to the drive shaft assembly (83) by fasteners. The hydraulic cylinder mounting bracket (85) is fixed on the middle beam assembly. One end of the hydraulic cylinder (84) is connected to the hydraulic cylinder mounting bracket (85) by a hinge, and the other end is connected to the drive shaft assembly (83) by a hinge. The secondary locking device (9) cooperates with the drive shaft assembly (83) to prevent the bottom door from being opened accidentally.

10. A railway hopper car for transporting powdery goods according to claim 9, characterized in that, The secondary locking device (9) includes a handle assembly (91), a first pull rod assembly (92), a lever fulcrum assembly (93), a second pull rod assembly (94), a rotating shaft assembly (95), a tension spring seat (96), a tension spring (97), a third pull rod assembly (98), and a locking lever assembly (99); The handle assembly (91) is fixed to both sides of the base frame, the lever fulcrum assembly (93) is fixed to the bottom of the vehicle, the two ends of the first pull rod assembly (92) are movably connected to the handle assembly (91) and the lever fulcrum assembly (93) respectively via pins, the second pull rod assembly (94) is movably connected to the rotating shaft assembly (95) via pins, the tension spring seat (96) is fixed to the middle of the base frame, one end of the tension spring (97) is fitted inside the tension spring seat (96), and the other end is connected to the rotating shaft assembly (95), the third pull rod assembly (98) is movably connected to the rotating shaft assembly (95) and the locking lever assembly (99) respectively via pins.

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