Railway flat car and railway flat car body

Abstract

The application provides a railway flat car body and a railway flat car. The railway flat car body comprises a middle beam and two side beams. The middle beam and the two side beams are connected by a plurality of longitudinal connection beams. The connection beams comprise two beam modules which are distributed in the transverse direction and are independent of each other. At least one connection beam is connected to the middle beam by a connecting piece. The inner end of each beam module is connected to the middle beam by a connecting piece, and the outer end of each beam module is connected to the side beam by a connecting piece. The middle beam comprises an upper beam body and a lower beam body. The lower beam body is located below the upper beam body. The lower beam body is installed on the upper beam body by a connecting piece. The car body is connected by connecting pieces, so that the problem of welding smoke collection can be improved.

Description

Technical Field

[0001] This invention relates to the field of railway vehicle technology, specifically to a railway flatcar and its body. Background Technology

[0002] Railway flatcars are railway vehicles mainly used in logistics transportation. They have many advantages such as high transportation efficiency, low transportation cost, convenient intermodal transport, and less cargo damage. They are the main transport vehicles for modern logistics and multimodal transport.

[0003] In related technologies, railway flatcars include a car body, which comprises two side beams and a center beam. The two side beams are arranged opposite each other in the transverse direction, and the center beam is located between the two side beams. A crossbeam, end beams, and sleeper beams are also installed between the center beam and the side beams. The crossbeams, end beams, and sleeper beams are all welded to the center beam and side beams. However, the welding method has problems such as difficulty in collecting welding fumes, making it difficult to meet current green and environmentally friendly production concepts.

[0004] Therefore, how to provide a solution to overcome or alleviate the above-mentioned defects remains a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this application is to provide a railway flatcar and its body, wherein the connecting beams, middle beams, and side beams of the body are connected by connectors, which can improve the problem of welding fume collection and the green level of the body manufacturing is high.

[0006] To solve the above-mentioned technical problems, this application provides a railway flatcar body, including a center beam and two side beams, the two side beams being arranged opposite each other in the transverse direction, and the center beam being arranged between the two side beams; the center beam and the two side beams are connected by a plurality of longitudinally distributed connecting beams, the connecting beams extending in the transverse direction, and each connecting beam including two beam modules that are distributed in the transverse direction and are independent of each other;

[0007] At least one of the connecting beams is connected to the middle beam via a connector, and the inner end of one beam module of the connecting beam is connected to the middle beam via a connector, and the outer end is connected to a side beam via a connector; the inner end of another beam module of the connecting beam is connected to the middle beam via a connector, and the outer end is connected to another side beam via a connector.

[0008] The middle beam includes an upper beam and a lower beam. The lower beam is located below the upper beam and is installed on the upper beam via connectors.

[0009] Compared with the welding scheme, in the embodiment of the present application, the connection between the connecting beam and the middle beam and the connection between the connecting beam and the side beam is achieved by using the connecting piece, which can improve the problem of welding smoke collection, has lower energy consumption, and significantly improves the green level in the process of manufacturing the vehicle body, which is more conducive to environmental protection. On the other hand, when the middle beam is connected with each connecting beam, it is connected with the upper beam body, and the upper beam body is divided into two parts, which is conducive to processing the part connected with the connecting beam. The connecting beam is connected to the upper beam body, so that the longitudinal impact and the traction load of the railway flat car body are mainly borne by the upper beam body, and the connecting area of the upper beam body and the lower beam body is basically not affected, the connecting piece connecting the upper beam body and the lower beam body is not easy to be damaged, and the connection reliability of the upper beam body and the lower beam body is guaranteed.

[0010] The present application also provides a railway flat car, comprising a vehicle body, wherein the vehicle body is the vehicle body of the railway flat car described above.

[0011] Since the vehicle body of the railway flat car described above has the above technical effects, the railway flat car with the vehicle body also has similar technical effects, and therefore, the description is not repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 The structure schematic diagram of the railway flat car provided by the embodiment of the present application is shown in the figure;

[0013] Figure 2 The top view of the railway flat car is shown in the figure; Figure 1

[0014] The structure schematic diagram of the middle vehicle body is shown in the figure; Figure 3 Figure 1 The structure schematic diagram of the large cross beam is shown in the figure;

[0015] Figure 4 Figure 3 The top view of the railway flat car is shown in the figure;

[0016] Figure 5 The structure schematic diagram of the small cross beam is shown in the figure; Figure 4

[0017] The left view of the railway flat car is shown in the figure; Figure 6 Figure 3 The schematic diagram of the connection between the two large cross beam modules and the middle beam and the side beam is shown in the figure;

[0018] Figure 7 Figure 6 The schematic diagram of the connection between the two small cross beam modules and the middle beam and the side beam is shown in the figure;

[0019] Figure 8 The schematic diagram of the connection between the two small cross beam modules and the middle beam and the side beam is shown in the figure; Figure 4

[0020] The schematic diagram of the connection between the two small cross beam modules and the middle beam and the side beam is shown in the figure; Figure 9 Figure 6 The schematic diagram of the connection between the two small cross beam modules and the middle beam and the side beam is shown in the figure;​​​​​

[0021] Figure 10 for Figure 3 A partial structural schematic diagram of the end region of the vehicle body shown;

[0022] Figure 11 for Figure 3 Structural diagram of the middle sleeper beam module;

[0023] Figure 12 for Figure 11 Top view;

[0024] Figure 13 for Figure 3 Structural diagram of the mid-end beam module;

[0025] Figure 14 for Figure 13 The left view;

[0026] Figure 15 for Figure 13 Axonometric view of the middle beam module with handrails and footrests installed;

[0027] Figure 16 for Figure 15 The main view;

[0028] Figure 17 for Figure 3 A partial schematic diagram of the central beam;

[0029] Figure 18 for Figure 17 The main view;

[0030] Figure 19 for Figure 3 A partial schematic diagram of the middle side beam;

[0031] Figure 20 for Figure 19 Left view of the middle side beam;

[0032] Figure 21 for Figure 3 Schematic diagram of the end face of the CRRC body;

[0033] Figure 22 for Figure 3 A schematic diagram of the transverse cross-section of the CRRC body at the position of the sleeper beam;

[0034] Figure 23 for Figure 3 A schematic diagram of the transverse cross-section of the CRRC body at the end beam position;

[0035] Figure 24 for Figure 3 A structural diagram of the central beam;

[0036] Figure 25 for Figure 24front view of the main body of the first connecting seat;

[0037] Figure 26 is a front view of the main body of the first connecting seat; Figure 25

[0038] Figure 27 Figure 26

[0039] Figure 28 Figure 26

[0040] Figure 29 Figure 24

[0041] Figure 30 Figure 29

[0042] Figure 31 Figure 29

[0043] Figure 32 Figure 29

[0044] Figure 33 Figure 32

[0045] Figure 34 Figure 29

[0046] Figure 35 Figure 31

[0047] Figure 36

[0048] Figure 37 Figure 36

[0049] Figure 38 Figure 37

[0050] Figure 39 Figure 37

[0051] Figure 40

[0052] Figure 41 is a front view of the main body of the first connecting seat;​​​​​​​​​​​​​​​​​​​​​​​​​​​

[0053] Figure 42 is a front view of the Figure 41

[0054] Figure 43 is a structural schematic view of a middle upper connecting plate; Figure 42

[0055] Figure 44 is a structural schematic view of a middle partition plate of one specific embodiment; Figure 42

[0056] Figure 45 is a structural schematic view of another specific embodiment of the middle partition plate; Figure 42

[0057] Figure 46 is a structural schematic view of an upper beam body matched with a middle lower beam body; Figure 41

[0058] Figure 47 is a structural schematic view of a middle bogie; Figure 1

[0059] Figure 48 is a structural schematic view of a middle coupler buffer device; Figure 1

[0060] Figure 49 is a structural schematic view of a middle non-metallic wearing plate installed on a coupler from plate; Figure 48

[0061] Figure 50 is a structural schematic view of a middle brake device; Figure 1

[0062] Figure 51 is a top view of the Figure 50

[0063] Figure 52 is a structural schematic view of a first container lock; Figure 2

[0064] Figure 53 is a structural schematic view of a second container lock. Figure 2 DETAILED DESCRIPTION

[0065] In order to make the skilled in the art better understand the technical solutions of the present application, the present application will be further described in detail below in combination with the drawings and specific embodiments.

[0066] ​​​​​​​​​​​​In the description of the embodiments of the present application, the terms "first", "second", "third" are only used for descriptive purpose, and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", "third" can explicitly or implicitly include one or more of the features.

[0067] In the description of the embodiments of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, "connection" can be detachable connection, or can be non-detachable connection; can be direct connection, or can be indirect connection through intermediate medium.

[0068] In the embodiments of the present application, the orientation terms such as "longitudinal", "transverse", "vertical" and the like are all referred to the railway flat car. "Longitudinal" refers to the running direction of the railway flat car, or the length direction of the railway flat car, or also referred to as the front-rear direction. "Transverse" refers to the width direction of the railway flat car. "Vertical" refers to the height direction of the railway flat car, or the up-down direction, wherein, the direction relatively far away from the ground is up, and the direction relatively close to the ground is down.

[0069] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more. And when "a plurality of" is used to represent the number of several components, it does not represent the mutual relationship of the components in the number.

[0070] Please refer to Figure 1 , 2 , Figure 51 for the structural schematic diagram of the railway flat car provided by the embodiments of the present application; Figure 1 for Figure 2 the top view.

[0071] In the embodiments, the railway flat car includes a car body 100, a bogie 200, a brake device 400, a coupler buffer device 300, the bogie 200 is located at the bottom of the car body 100 and at both ends of the longitudinal direction of the car body 100, the brake device 400 is also mounted at the bottom of the car body 100, and the end of the car body 100 is provided with the coupler buffer device 300.

[0072] Please continue to refer to Figure 1 , Figure 3 for Figure 3 the structural schematic diagram of the car body 100 in

[0073] As Figure 1As shown, the vehicle body 100 comprises a middle beam 1, a cross beam 2 and two side beams 3. The middle beam 1 and the side beams 3 extend in the longitudinal direction, the two side beams 3 are arranged opposite to each other in the transverse direction, and the middle beam 1 is arranged between the two side beams 3. The middle beam 1 and the two side beams 3 are substantially parallel, and the two side beams 3 can be symmetrically arranged relative to the middle beam 1 to stabilize the structure of the vehicle body 100 and balance the stress. The middle beam 1 and the two side beams 3 are connected by a plurality of connection beams arranged in the longitudinal direction, Figure 3 The plurality of connection beams comprises the cross beam, the bolster beam 4 and the end beam 5. The cross beam is specifically a large cross beam 21 or a small cross beam 22, that is, the plurality of connection beams extend in the transverse direction and are different in the longitudinal position. The end beam 5 is located at the end of the vehicle body 100, and the bolster beam 4 is the connection beam closest to the end beam 5. The part of the middle beam 1 between the bolster beam 4 and the end beam 5 is a traction beam.

[0074] As described above, the connection beams extending in the transverse direction comprise the large cross beam 21 and the small cross beam 22. The longitudinal dimension of the large cross beam 21 can be greater than that of the small cross beam 22, so that the large cross beam 21 has a stronger effect on the strengthening of the vehicle body than the small cross beam 22. Here, the number and arrangement position of the large cross beam 21 and the small cross beam 22 are not limited in the embodiments of the present application, and can be determined by those skilled in the art according to the strength design requirements of the vehicle body in practical applications. In the scheme of the drawings, as Figure 3 shown, the number of the large cross beam 21 can be one, and the large cross beam 21 can be arranged at the longitudinal center of the vehicle body 100. The number of the small cross beam 22 can be multiple, and each small cross beam 22 can be distributed on the longitudinal two sides of the large cross beam 21 and arranged at intervals in the longitudinal direction. In addition, the specific structure of the large cross beam 21 and the small cross beam 22 is not limited in the embodiments of the present application, and can be determined by those skilled in the art according to the strength design requirements of the vehicle body in practical applications.

[0075] It is worth noting that each connection beam in the present embodiment comprises two beam modules independently distributed in the transverse direction, Figure 3 It can be seen from the drawings that the end beam 5 comprises two end beam modules 5A, the bolster beam 4 comprises two bolster beam modules 4A, the large cross beam 21 comprises two large cross beam modules 21A, and the small cross beam 22 comprises two small cross beam modules 22A.

[0076] In the present embodiment, at least one connection beam of the vehicle body 100 is connected to the middle beam 1 by the connecting piece 6, Figure 3In the embodiment, each connecting beam is connected with the middle beam 1 through the connecting piece 6. Specifically, the inner end of one beam module of the connecting beam is connected with the middle beam 1 through the connecting piece 6, and the outer end is connected with one side beam 3 through the connecting piece 6; the inner end of the other beam module of the connecting beam is connected with the middle beam 1 through the connecting piece 6, and the outer end is connected with the other side beam 3 through the connecting piece 6. In the embodiment, in the transverse direction, the end closer to the side beam 3 is "outer", and the end closer to the middle beam 1 is "inner", that is, the direction away from the longitudinal center line of the vehicle body 100 is "outer", and the direction away from the longitudinal center line of the vehicle body 100 is "inner". The same understanding is made below, and no repeated description is made.

[0077] Compared with the welding scheme in the related art, in the embodiment, the connecting piece 6 is used to connect the transversely extending connecting beam, the middle beam 1 and the side beam 3, there is no problem of welding smoke collection, the energy consumption is low, the green level of the vehicle body manufacturing process is significantly improved, and the environmental protection is more beneficial.

[0078] The connecting piece 6 can be a rivet or a bolt, and the specific structure and strength design of the rivet and the bolt are not limited herein. In actual application, a person skilled in the art can configure according to specific needs, as long as the use requirements are met.

[0079] The connection mode and structure of the connecting beam, the middle beam 1 and the side beam 3 of different types are described in detail one by one as follows.

[0080] Please continue to refer to Figure 3 , 5 , Figure 4 is Figure 4 a structural schematic view of the middle large beam 21, which is a view in the longitudinal direction; Figure 3 is Figure 5 a top view.

[0081] The large beam module 21A in the embodiment can include two cover plates and two web plates 213.

[0082] The two cover plates can be arranged opposite to each other in the vertical direction. For the convenience of description, the two cover plates can be respectively named as an upper cover plate 211 and a lower cover plate 212, and the upper cover plate 211 can be located on the upper side of the lower cover plate 212. The two web plates 213 can be arranged opposite to each other in the longitudinal direction, and both of the two web plates 213 can be connected with the upper cover plate 211 and the lower cover plate 212 to combine to form a box-shaped large beam module 21A, so as to ensure the structural strength of the large beam module 21A.

[0083] The connection between the web plate 213 and the upper cover plate 211 and lower cover plate 212 can be welded. This is because the size of the main crossbeam 21 is much smaller than that of the vehicle body 100 (generally not exceeding 2m), making dust collection relatively easy during manufacturing. Of course, the web plate 213 can also be connected to the upper cover plate 211 and lower cover plate 212 using, for example, the connecting piece 6 mentioned above. This would further reduce welding and thus further reduce welding fumes.

[0084] The upper cover plate 211, the lower cover plate 212, and the web plate 213 can all be connected to the side beam 3 through the connector 6. Similarly, the upper cover plate 211, the lower cover plate 212, and the web plate 213 can all be connected to the middle beam 1 through the connector 6, so as to realize the connection between the main beam 21 and the middle beam 1, and between the main beam 21 and the side beam 3.

[0085] Both the upper cover plate 211 and the lower cover plate 212 mentioned above can be plate beams. (Combined) Figure 4 , 5 Both the upper cover plate 211 and the lower cover plate 212 can be provided with multiple connecting holes on their lateral sides for use with the connector 6 for connection with the middle beam 1 and the side beam 3.

[0086] like Figure 4 As shown, the web plate 213 can be U-shaped, including an integrally formed web base plate 213a and two side plates 213b. The two side plates 213b can be arranged opposite each other in the transverse direction, and each side plate 213b can be provided with a connector 6 to connect to the central beam 1 and the side beam 3 respectively. It should be understood that in some other embodiments, the web base plate 213a and the side plates 213b can also be manufactured separately and then connected by welding or connector 6, which is also a feasible solution.

[0087] The main crossbeam module 21A can also be used to install locks on the vehicle body 100, such as container locks, etc. Figure 5 The first container lock 7 shown is shown. Figure 3 The mid-section beam module 5A is also equipped with a lock, namely the second container lock 8. Both the first container lock 7 and the second container lock 8 can be used to secure containers and other facilities placed on railway flatcars. Specifically, the main crossbeam 21 can be connected to the first container lock 7 via the upper cover plate 211. The first container lock 7 can be installed on the main crossbeam 21 by welding, or it can be connected via the connector 6, depending on the actual usage requirements.

[0088] Furthermore, the main beam 21 may also include a connecting part 214 for connecting the upper cover plate 211, the lower cover plate 212 and the two web plates 213 to improve the structural strength of the main beam 21.

[0089] Here, the embodiments of the present application do not limit the specific structural form, quantity and setting position of the connecting part 214, and in actual application, the person skilled in the art can configure according to specific needs, as long as it can meet the requirements of use. For example, the connecting part 214 can be a plate beam, such as Figure 3 The connecting part 214 on the right side in the middle is of this structural form, at this time, the structural form of the connecting part 214 can be relatively simple; or, the connecting part 214 can also be a plate beam assembly formed by a plurality of plate beams, such as Figure 3 The connecting part 214 on the left side in the middle is of this structural form, which is composed of two vertical plate beams and two horizontal beams connected between the two vertical plate beams, and the reinforcing effect of the connecting part 214 of this form is better, which is more conducive to providing reliable support for the upper cover plate 211 at the installation position of the first container lock 7 to reinforce the structural strength at this position.

[0090] In addition, in the large cross beam module 21A, the upper cover plate 211, the lower cover plate 212, the web plate 213 and the connecting part 214 can all be configured with an opening (not labeled in the figure). The opening can serve as an operation hole to facilitate welding and connection of the connecting part 6. Moreover, the opening can also serve as a weight reduction hole to reduce the weight of the large cross beam module 21A, which is conducive to realizing the lightweight of the vehicle body.

[0091] Please see Figure 5 , 7 , Figure 6 for Figure 6 the structural schematic view of the small cross beam 22, which is a longitudinal view; Figure 3 for Figure 7 the left view of the small cross beam 22.

[0092] The small cross beam module 22A in the embodiment is a bent beam, which can include a first plate part 221 and a second plate part 222 arranged opposite in the vertical direction. The first plate part 221 can be connected to the upper part of the middle beam 1 and the side beam 3 through the connecting part 6, and the second plate part 222 can be connected to the lower part of the middle beam 1 and the side beam 3 through the connecting part 6.

[0093] The small cross beam module 22A can also include a third plate part 223, which can connect the first plate part 221 and the second plate part 222, so that the small cross beam module 22A generally presents a “B” or “Z” shape. The third plate part 223 can be provided with a transition connecting plate 224, which can be generally perpendicular to the third plate part 223, and the transition connecting plate 224 can also be connected to the middle beam 1 and the side beam 3 through the connecting part 6.

[0094] The transition connecting plate 224 and the third plate portion 223 can be an integral structure formed integrally, at this time, the transition connecting plate 224 and the third plate portion 223 on both sides can form a U-shaped structure. Alternatively, the transition connecting plate 224 and the third plate portion 223 can be manufactured separately and then assembled, and the specific assembly process can be welding or connecting piece 6 connection. It should be understood that the size of the small beam module 22A is relatively small, and even if the welding process is used, the collection of welding fumes is relatively easy.

[0095] In combination Figure 6 , the third plate portion 223 can also be provided with an opening, which can also serve as an operating hole and a weight reduction hole.

[0096] In the above description, the vehicle body 100 is taken as an example including the large beam 21 and the small beam 22, and in fact, the vehicle body 100 can only include one of the large beam 21 and the small beam 22, which is also feasible, and the embodiments of the application do not make specific limitations.

[0097] Please also see Figure 6 , Figure 8 For Figure 8 , the two large beam modules 21A and the beam 1, the side beam 3 are connected, and the view is viewed in the longitudinal direction.

[0098] The beam 1 includes an upper beam body 11, and the upper beam body 11 is provided with a first lower support portion 11c. The side beam 3 can be provided with a second lower support portion 31, and the first lower support portion 11c and the second lower support portion 31 can be arranged opposite to each other in the transverse direction. In the specific assembly, the large beam module 21A can be directly assembled from top to bottom on the first lower support portion 11c and the second lower support portion 31, so that the subsequent connection of the large beam module 21A and the beam 1 and the side beam 3 can be facilitated.

[0099] In the embodiment, the specific structure of the beam 1 and the side beam 3 is not limited here, as long as it can have the first lower support portion 11c and the second lower support portion 31. In Figure 4 , the cross-sectional shape of the beam 1 can be approximately inverted “K” type, the beam 1 can include two first lower support portions 11c, and the cross-sectional shape of the side beam 3 can be approximately “B” or “Z” type, and one side beam 3 has one second lower support portion 31.

[0100] Please also see Figure 8 , Figure 9 For Figure 9 , the two small beam modules 22A and the beam 1, the side beam 3 are connected, and the view is viewed in the longitudinal direction, which is the same as Figure 6With the same structural principle, the small crossbeam module 22A can be directly installed from top to bottom on the first lower support part 11c and the second lower support part 31, which facilitates the subsequent connection of the small crossbeam module 22A with the middle beam 1 and the side beam 3.

[0101] Please continue to refer to this. Figure 8 , Figure 10 for Figure 10 A partial structural schematic diagram of the end region of the vehicle body 100 shown.

[0102] In this embodiment, the portion of the middle beam 1 between the bolster beam 4 and the end beam 5 is a traction beam 1A. The bolster beam 4 includes two independent bolster beam modules 4A, which extend laterally. The outer end of the bolster beam module 4A is connected to the side beam 3 via a connector 6, and the inner end of the bolster beam module 4A is connected to the traction beam 1A of the middle beam 1 via a connector 6. It can be understood that one bolster beam module 4A is connected between one side beam 3 and the traction beam 1A, and the other bolster beam module 4A is connected between another side beam 3 and the traction beam 1A.

[0103] In this embodiment, the two bolster beam modules 4A are aligned horizontally, that is, the two bolster beam modules 4A are aligned to form bolster beam 4. The inner ends of the two bolster beam modules 4A can be connected or have a certain distance. The same applies to other types of two connecting beam modules, that is, they are all symmetrically arranged relative to the middle beam 1 to form the corresponding connecting beam, which will not be described in detail.

[0104] In this embodiment, the vehicle body 100 also includes an end beam 5, which comprises two independent end beam modules 5A. The end beam modules 5A extend laterally, and their outer ends are connected to the side beams 3 via connectors 6. Their inner ends are connected to the traction beams 1A via connectors 6. It can be understood that one end beam module 5A is connected between one side beam 3 and the traction beam 1A of the middle beam 1, and the other end beam module 5A is connected between another side beam 3 and the traction beam 1A.

[0105] In this way, by modularizing both the bolster beam 4 and the end beam 5, the welding of the bolster beam 4 and end beam 5 to the side beam 3 and the traction beam 1A can be avoided. This avoids the problem of difficult dust collection caused by welding the bolster beam 5 and end beam 5 in a large workshop. At the same time, due to the modular design of the bolster beam 4 and end beam 5, the complexity of the connection structure between each bolster beam module 4A and end beam module 5A and the middle beam 1 and side beam 3 is easily reduced, which is conducive to improving the manufacturability and also to improving the reliability and stability of the connection between the bolster beam 5 and end beam 4 and the middle beam 1 and side beam 3.

[0106] Please refer to Figure 3 , 12 , Figure 11 for Figure 11A structural schematic view of the center sill module 4A, viewed along the longitudinal direction; Figure 3 is a top view. Figure 12 is a top view.

[0107] In this embodiment, the center sill module 4A includes an upper cover plate 41, a lower cover plate 42, and a web plate 43. The upper cover plate 41 and the lower cover plate 42 are arranged opposite to each other in the vertical direction, and the web plate 43 is fixed between the upper cover plate 41 and the lower cover plate 42. The upper cover plate 41 can be a plate structure parallel to the horizontal plane, so as to facilitate connection with the floor of the vehicle and provide a basis for the vehicle body 100 to have a flat support surface for carrying goods.

[0108] The distance between the outer end of the lower cover plate 32 and the upper cover plate 41 is less than the distance between the inner end of the lower cover plate 42 and the upper cover plate 41, that is, the distance between the side of the upper cover plate 41 close to the side sill 3 and the lower cover plate 32 is less than the distance between the side of the upper cover plate 41 close to the center sill 1 and the lower cover plate 42. Figure 11 In this embodiment, the left end of the center sill module 4A is the outer end, and the right end is the inner end.

[0109] As shown in FIG. 4A, the lower cover plate 42 includes a first plate portion 421, a second plate portion 422, and a third plate portion 423 connected in sequence. The first plate portion 421 is arranged close to the side sill 3, and the third plate portion 423 is arranged close to the center sill 1. Both the first plate portion 421 and the third plate portion 423 are parallel to the upper cover plate 41, and the second plate portion 422 is inclined relative to the upper cover plate 41, so as to facilitate connection of the first plate portion 421 and the third plate portion 423. A side bearing wear plate 9 can be mounted on the bottom surface of the third plate portion 423. Such a structural design is beneficial to ensuring the levelness of the side bearing wear plate 9 and facilitating assembly and process. Figure 11 In this embodiment, the bottom surface of the outer end of the lower cover plate 42 is fixedly connected with a first support seat 44. Specifically, the first support seat 44 is fixed on the bottom surface of the first plate portion 421, and the bottom end of the first support seat 44 can be flush with the third plate portion 423, so as to facilitate connection of the center sill module 4A and the side sill 3.

[0110] Specifically, the outer end of the upper cover plate 41 is connected with the side sill 3 through a connecting piece 6, and the inner end of the upper cover plate 41 is fixedly connected with the center sill 1 through the connecting piece 6. The first support seat 44 at the outer end of the lower cover plate 42 can be connected with the side sill 3 through the connecting piece 6, and the inner end of the lower cover plate 42 is connected with the center sill 1 through the connecting piece 6.

[0111]

[0112] ​In the embodiment, the web plate 43 of the bolster module 4A extends along the transverse direction, the web plate 43 comprises a web base plate 432, the outer end and the inner end of the web base plate 432 are provided with web side plates 431, the two web side plates 431 are oppositely arranged along the transverse direction, and are respectively fixedly connected with the side beam 3 and the middle beam 1 through the connecting piece 6. The web plate 43 can be provided with two, the web side plates 432 of the two web plates 43 are arranged in parallel, so as to improve the reliability and stability of the connection between the bolster module 4A and the middle beam 1 and the side beam 3, and facilitate to ensure the structural strength of the vehicle body 100.

[0113] Specifically, in order to improve the strength of the bolster module 4A, a plurality of connecting parts 45 can be further connected between the two web plates 43, wherein the plurality of refers to one or two or more, and the plurality of referred to below is also consistent with this understanding, and will not be repeated. Figure 11 The middle part is exemplarily shown as being provided with three connecting parts 45 between the two web plates 43, and the connecting part 45 is specifically a plate beam structure, wherein two of the connecting parts 45 are relatively close to the mounting position of the side bearing wear plate 9, which is beneficial to improve the structural strength of the position where the side bearing wear plate 9 is located. In actual application, the number and arrangement position of the connecting part 45 can be arranged according to specific requirements, which is not limited here.

[0114] In the embodiment, the upper cover plate 41, the lower cover plate 42, the web plate 43, the first support seat 44 and the connecting part 45 of the bolster module 4A can be fixed together by welding. The volume of the modular bolster module 4A is relatively small, and most of the structure can be fixed by welding in a smaller workshop, which can facilitate the collection of smoke dust.

[0115] In addition, the inner end of the upper cover plate 41 is closer to the longitudinal center line of the middle beam 1 than the inner end of the lower cover plate 42, the outer end of the upper cover plate 41 is farther away from the longitudinal center line of the middle beam 1 than the inner end of the lower cover plate 42, and the inner end of the lower cover plate 42 is farther away from the longitudinal center line of the middle beam 1 than the inner end of the web plate 43. Such a structure is beneficial to assemble the bolster module 4A in a vertical falling manner with the middle beam 1 and the side beam 3, that is, the inner and outer ends of the upper cover plate 41 can be lapped onto the upper surface of the side beam 2 and the middle beam 1, and connected through the connecting piece 6. For details, please refer to Figure 12 、 7 It is understood that the large cross beam module 21A and the small cross beam module 22A are also arranged in this way.

[0116] Please refer to Figure 6 , Figures 13-14 For Figure 13 The middle end beam module 5A is a structure schematic view viewed along the longitudinal direction; Figure 3 For Figure 14 The left view of the middle end beam module 5A is a left view.

[0117] In the embodiment, the end beam module 5A comprises an end beam body 51, the end beam body 51 comprises a top plate part 511, a side plate part 512 and a bottom plate part 513, the side plate part 512 is fixedly connected between the top plate part 511 and the bottom plate part 513, and the top plate part 511 and the bottom plate part 513 are located on the same side of the side plate part 512. Specifically, the end beam body 51 is an integrally formed structure and has good structural strength.

[0118] In the embodiment, the outer end of the top plate part 511 of the end beam module 5A is connected with the side beam 3 through the connecting piece 6, and the inner end of the top plate part 511 is connected with the middle beam 1 through the connecting piece 6. Figure 13 In the embodiment, the left end of the end beam module 5A is the outer end, and the right end is the inner end; the outer end of the bottom plate part 513 is connected with the side beam 3 through the connecting piece 6, and the inner end of the bottom plate part 513 is connected with the middle beam 1 through the connecting piece 6.

[0119] In addition, the longitudinal dimension of the bottom plate part 513 of the end beam module 5A is smaller than the longitudinal dimension of the top plate part 511, so as to facilitate the arrangement of other structures installed on the vehicle body 100.

[0120] In addition, the longitudinal dimension of the bottom plate part 513 of the end beam module 5A is smaller than the longitudinal dimension of the top plate part 511, so as to facilitate the arrangement of other structures installed on the vehicle body 100. Figure 13 14 In addition, the longitudinal dimension of the bottom plate part 513 of the end beam module 5A is smaller than the longitudinal dimension of the top plate part 511, so as to facilitate the arrangement of other structures installed on the vehicle body 100. Figure 13 As shown in FIG. 1, the support beam 52 is an L-shaped beam structure in cross section, and it can be understood that the support beam 52 can also adopt other forms of beam structures. The outer end of the support beam 52 is fixedly connected with the side beam 3 through the connecting piece 6, and the inner end of the support beam 52 is connected with the middle beam 1 through the connecting piece 6. In this way, the stability and reliability of the connection between the end beam module 5A and the middle beam 1 and the side beam 3 can be improved.

[0121] In the embodiment, the end beam body 51 can further comprise a plurality of rib plates 514 fixedly connected between the top plate part 511 and the bottom plate part 513, so as to improve the structural strength of the end beam body 51. The rib plates 514 can be specifically arranged at places where the end beam body 51 is subjected to greater stress, so as to play a reinforcing role. The rib plates 514 can also be fixedly connected with the side plate part 512 and the support beam 52, so as to further improve the structural strength of the end beam module 5A. Under the condition of meeting the reinforcing requirement, the rib plates 514 can be provided with weight-reducing holes.

[0122] ​In addition, the end beam module 5A can further include a connecting corner piece 53, which is L-shaped and includes a first plate body and a second plate body formed integrally, wherein the first plate body is fixedly connected with the outer end of the side plate part 512 of the end beam body 51 through the connecting piece 6, and the second plate body is fixedly connected with the side beam 3 through the connecting piece 6, so that the connection strength between the end beam module 5A and the side beam 3 can be improved.

[0123] Specifically, the top plate part 511, the side plate part 512 and the bottom plate part 513 of the end beam body 51 can be an integral forming, the rib plate 514 can be fixed with the top plate part 511 and the side plate part 512 through welding, and the support beam 52 can be fixed with the top plate part 511 through welding. The volume of the modular end beam module 5A is relatively small, and most of the structure can be fixed through welding in a small workshop, which is convenient for collecting smoke dust.

[0124] In the scheme, the inner end of the top plate part 511 of the end beam body 51 is close to the longitudinal center line of the center beam 1 relative to the inner end of the bottom plate part 513 and the inner end of the support beam 52, and the outer end of the top plate part 511 is away from the longitudinal center line of the center beam 1 relative to the outer end of the bottom plate part 513 and the outer end of the support beam 52; that is, in the transverse direction, the size of the top plate part 511 is greater than the size of the bottom plate part 513 and the size of the support beam 52, and the two ends of the top plate 511 extend beyond the two ends of the bottom plate 513 and the two ends of the support beam 52. Such a structure is conducive to the assembly of the end beam module 5A in a vertical falling manner with the center beam 1 and the side beam 3, which has been described in the pillow beam module 4A, the large cross beam module 21A and the small cross beam module 22A.

[0125] As shown in Figure 14 , 16 , Figure 15 is a side view of the end beam module 5A on which a handrail and a footrest are installed; Figure 15 is a front view of the end beam module 5A. Figure 13 Figure 16 In the embodiment, the end beam module 5A is located at the end of the vehicle body 100, and at least one of the end handrail 01, the end footrest 02 and the side handrail 03 can be fixedly connected with at least one end beam module 5A of one end beam 5 through the connecting piece 6 for the convenience of practical application and operation. As shown in

[0126] , the end beam module 5A is simultaneously fixed with the end handrail 51, the end footrest 52 and the side handrail 53. Figure 15 Please refer to

[0127] , Figure 15 , 18 , Figure 17 is a partial view of the center beam 1 in Figure 17 , showing the position of the traction beam 1A; Figure 3 isFigure 18 Front view

[0128] In this embodiment, the center sill 1 includes an upper beam body 11. The upper beam body 11 includes a first top plate 111, two first side plates 112 and two first support portions 113. The first support portion 113 is a bottom plate, and the upper beam body 11 extends longitudinally. The upper beam body 11 is specifically an integrally formed structure. Among them, the first side plate 112 extends downward from the side edge of the first top plate 11, and the first support portion 113 extends outward from the bottom edge of the first side plate 112. Briefly speaking, the cross-section of the center sill main body 11 is approximately in the shape of a "Ji" character.

[0129] The upper beam body 11 further includes a bottom cover plate 12. The bottom cover plate 12 is located in the area where the upper beam body 11 is used to connect with the bolster module 4A. The bottom cover plate 12 is located below the upper beam body 11. The bottom cover plate 12 and the first support portion 113 of the upper beam body 11 are connected by a connecting member 6. Along the transverse direction, the middle parts of both ends of the bottom cover plate 12 respectively extend out of the corresponding first support portion 113. The bottom cover plate 12 can play a role in supporting the bolster module 4.

[0130] An impact seat connecting plate 15 can be connected to the end of the center sill 1. The impact seat connecting plate 15 is used to install the impact seat 61. The front and rear draft gear seats 62 and 63 are installed on the first side plate 112 of the center sill 1 at the drawbar 1A part to facilitate the installation of the coupler buffer device 300. In addition, the center sill 1 can be provided with a center plate seat 64 on the side at the position of the bottom cover plate 12, and an upper center plate 65 is installed at the bottom.

[0131] Limited by the structure of the impact seat connecting plate 15, to ensure the reliability of the connection between the end beam module 5A and the drawbar 1A, the center sill 1 further includes an end beam connecting plate 13. The end beam connecting plate 13 is connected to the side of the first side plate 112 facing the side sill 3. The end beam connecting plate 13 includes a first connecting plate 131 and a second connecting plate 132. Among them, the first connecting plate 131 is in the same plane as the first top plate 111. The first connecting plate 131 is used to connect with the inner end of the end beam module 5A. The second connecting plate 132 is closer to the bolster module 4A than the first connecting plate 131, and closer to the first support portion 113 than the first connecting plate 131. The second connecting plate 132 is used to connect with the inner end of the end beam module 5A.

[0132] Figure 17 Among them, the first connecting plate 131 is in an L-shaped structure, including a horizontal plate portion and a vertical plate portion. The horizontal plate portion is flush with and fixedly connected to the first top plate 111. The vertical plate portion is fixedly connected to the first side plate 112. The vertical plate portion is also fixedly connected to the second connecting plate 132. The second connecting plate 132 is fixedly connected to the first side plate 112. Both the first connecting plate 131 and the second connecting plate 132 can be fixed by welding, which can ensure the structural strength.

[0133] In practical applications, depending on structural requirements, the central beam 1 can also be reinforced with a reinforcing plate 14 in areas with high load-bearing capacity.

[0134] Please refer to this as well. Figure 17 , 20 , Figure 19 for Figure 19 A partial schematic diagram of the middle side beam; Figure 3 for Figure 20 Left view of the middle side beam.

[0135] In this embodiment, the side beam 3 includes a longitudinally extending side beam body 31. The side beam body 31 includes an integrally formed second top plate 311, a second side plate 312, and a second support portion 313. The second support portion 313 is a plate structure. The second top plate 311 is fixedly connected to the top edge of the second side plate 312, and the second bottom plate 313 is fixedly connected to the bottom edge of the second side plate 312. The second top plate 311 is located outside the second side plate 312, and the second bottom plate 313 is located inside the second side plate 312. That is, the second top plate 311 and the second bottom plate 313 are located on both sides of the second side plate 312, and the second top plate 311 extends away from the central beam 1, while the second bottom plate 313 extends towards the central beam 1. Figure 19 As shown, the cross-section of the main body of the side beam 21 is approximately "Z" shaped or approximately "B" shaped.

[0136] In this design, the side beam 3 also includes a second support base 32, which is fixedly connected to the second base plate 313 and corresponds to the position of the end beam module 5A for connection to the outer end of the end beam module 5A. Additionally, for ease of inspection and maintenance, a top plate 34 is fixedly connected to the bottom of the side beam 3 via a connector. The top plate 34 is specifically positioned at the connection point between the side beam 4 and the bolster beam module 4A, providing enhanced support for the bolster beam module 4A. Furthermore, a towing hook 33 is connected to the outer side of the second side plate 312 of the side beam 3 via a connector.

[0137] Please refer to this as well. Figure 20 , Figures 21-23 for Figure 21 A schematic diagram of the end face of the 100-section trolley; Figure 3 for Figure 22 A schematic diagram of the transverse cross section of the 100-section chariot body at position 4 of the sleeper beam; Figure 3 for Figure 23 A schematic cross-sectional view of the CRRC body 100 at the end beam 5. (For clarity of the structure,) Figure 3 and Figure 22 Local structures are shown in all of them.

[0138] In this embodiment, the connection method between the bolster module 4A and the middle beam 1 and the side beam 3 is as follows:

[0139] The inner end of the upper cover plate 41 of the bolster module 4A is fixedly connected to the first top plate 111 of the upper beam body 11 of the center sill 1 through the connecting member 6.

[0140] The inner end (i.e., the third plate portion 423) of the lower cover plate 42 of the bolster module 4A is fixedly connected to the bottom cover plate 12 of the center sill 1 through the connecting member 6; there is a height difference between the bottom cover plate 12 and the first support portion 113, and the inner end face of the third plate portion 423 of the lower cover plate 42 can abut against the first bottom plate 113 of the center sill 1.

[0141] The abdominal side plate 431 at the inner end of the web 43 of the bolster module 4A is fixedly connected to the first side plate 112 of the center sill 1 through the connecting member.

[0142] Combined Figure 23 、 Figures 11-12 It can be seen that the structure at the inner end of the bolster module 4A can avoid the position on the center sill 1 for installing the center plate seat 64, facilitating the connection between the bolster module 4A and the center sill 1 and avoiding interference between the bolster module 4A and the center plate seat 64.

[0143] The outer end of the upper cover plate 41 of the bolster module 4A is fixedly connected to the second top plate 311 of the side sill 3 through the connecting member 6.

[0144] The first support seat 44 fixedly connected to the outer end of the lower cover plate 42 of the bolster module 4A is fixedly connected to the second side plate 312 of the side sill 3 through the connecting member 6. Combined Figures 17-18 , the first support seat 44 is in a "C" - shaped structure with an opening facing the side sill 3. In other embodiments, the first support seat 44 can also be in other structural forms. Depending on its structure, if there is no interference, the first support seat 44 can also be fixedly connected to the second bottom plate 313 of the side sill 3. <0C000493>The abdominal side plate 431 at the outer end of the web 43 of the bolster module 4A is fixedly connected to the second side plate 312 of the side sill 3 through the connecting member 6. <C

[0146] From the docking structure of the bolster module 4A with the center sill 1 and the side sill 3 above, since the upper cover plate 41 of the bolster module 4A extends beyond the lower cover plate 42 and the web 43 at both ends in the transverse direction, and the lower cover plate 42 and the web 43 cooperate with the side regions of the center sill 1 and the side sill 3, the bolster module 4A can be assembled with the center sill 1 and the side sill 3 in a vertically descending manner during actual assembly, simplifying the assembly process.

[0147] During specific implementation, the connection method of the end beam module 5A with the center sill 1 and the side sill 3 is as follows:

[0148] The inner end of the top plate part 511 of the end beam module 5A is fixedly connected with the first top plate 111 of the middle beam 1 through the connecting piece 6, and is also fixedly connected with the end beam connecting plate 13 fixedly connected with the middle beam 1 through the connecting piece 6, and specifically, the top plate part 511 is fixedly connected with the first connecting plate 131 of the end beam connecting plate 13. In combination with Figure 12 and Figure 17 Due to the arrangement of the impact seat mounting plate 15 and other related structures, the end beam module 5A needs to avoid space, and the matching space of the top plate part 511 and the first top plate 111 of the middle beam 1 is limited, and the arrangement of the end beam connecting plate 13 can enhance the reliability and strength of the connection part of the top plate part 511 and the middle beam 1.

[0149] The inner end of the bottom plate part 513 of the end beam module 5A is connected with the first support part 113 of the middle beam 1 through the connecting piece 6; the inner end of the support beam 52 of the end beam module 5A is fixedly connected with the end beam connecting plate 13 fixedly connected with the middle beam 1 through the connecting piece 6, and specifically, the inner end of the support beam 52 is fixedly connected with the second connecting plate 132 of the end beam connecting plate 13.

[0150] The outer end of the top plate part 511 of the end beam module 5A is fixedly connected with the second top plate 311 of the side beam 3 through the connecting piece 6; the outer end of the bottom plate part 513 of the end beam module 5A is fixedly connected with the second bottom plate 313 of the side beam 3 through the connecting piece 6; and the outer end of the support beam 42 of the end beam module 5A is fixedly connected with the second support seat 32 fixedly connected with the second bottom plate 313 of the side beam 3 through the connecting piece 6.

[0151] The first plate body of the connecting corner piece 53 of the end beam module 5A is fixedly connected with the side plate part 412 through the connecting piece, and the second plate body of the connecting corner piece 53 is fixedly connected with the second side plate 312 of the side beam 3.

[0152] As can be seen from the abutting structure of the end beam module 5A and the middle beam 1 and the side beam 3, since the top plate part 511 of the end beam module 5A extends the bottom plate part 513 and the support beam 52 at both ends in the transverse direction, and the support beam 52 and the bottom plate part 513 are matched with the side surface of the middle beam 1 and the side surface of the side beam 3, the end beam module 5A can be assembled with the middle beam 1 and the side beam 3 in a vertical falling manner during actual assembly, and the assembly process is simplified.

[0153] As shown in Figure 23 , a side surface footrest 04 can also be fixed at a position close to the end beam module 5A of the side beam 3.

[0154] In summary, the vehicle body 100 provided by the present application, wherein the connecting beams such as the cross beam, the end beam 5 and the bolster beam 4 are designed in a modular manner, since the connecting beams are relatively small in size relative to the whole vehicle body 100, the welding process can be used inside the connecting beams, and the welding smoke is relatively easy to collect, of course, the connecting beams can also be connected by the connecting piece 6 to eliminate the welding smoke; as for the modular connecting beams, the connecting piece 6 and the longer middle beam 1 and the side beam 3 are connected, and there is no smoke collection problem, and the green level is greatly improved; and when the connecting beams are assembled, the vertical falling mode can be used to butt joint with the middle beam 1 and the side beam 3, and the assembly process is good, and the operation is more convenient.

[0155] It should be emphasized that in the above embodiment, the specific connection mode of the connecting beam and the upper beam body 11 of the middle beam 1 is mainly described. The middle beam 1 in the embodiment includes the upper beam body 11 and the lower beam body 16, the lower beam body 16 is located below the upper beam body 11, and the lower beam body 16 is also installed on the upper beam body 11 by the connecting piece 6 to assemble into the middle beam 1. By such arrangement, on the one hand, the middle beam 1 is divided into two parts, and is connected by the connecting piece 6, since the middle beam 1 is relatively large in size, the split setting can also improve the problem that the welding smoke is not easy to collect; on the other hand, when the middle beam 1 is connected with each connecting beam, it is connected with the upper beam body 11, the split setting of the upper beam body 11 is beneficial to processing the parts connected with the connecting beam, such as more easily processing the riveting hole, more easily connecting the end beam connecting plate 13 and the bottom cover plate 12, etc., the connecting beam is connected to the upper beam body 11, then the longitudinal impact and the traction load of the railway flat car body 100 are mainly borne by the upper beam body 11, and basically do not act on the connection area of the upper beam body 11 and the lower beam body 16, the connecting piece connecting the upper beam body 11 and the lower beam body 12 is not easy to be damaged, which is beneficial to guaranteeing the connection reliability of the upper beam body 11 and the lower beam body 12.

[0156] Please refer to Figure 21 , Figures 24-35 for Figure 24 the structure diagram of the middle beam 1; Figure 3 for Figure 25 the front view of the middle beam 1; Figure 24 for Figure 26 the structure diagram of the upper beam body 11 of the middle beam 1; Figure 25 for Figure 27 the bottom view of the middle beam 1; Figure 26 for Figure 28 the partial view of the upper beam body 11 of the middle beam 1; Figure 26 for Figure 29 the structure diagram of the lower beam body 16 of the middle beam 1; Figure 24 for Figure 30 the top view of the middle beam 1; Figure 29 for Figure 31 the enlarged view of the A part of the middle beam 1; Figure 29 forFigure 32 a structural schematic view of the end beam module 161 in FIG. 1; Figure 29 is Figure 33 a top view of FIG. 1; Figure 32 is Figure 34 a structural schematic view of the middle beam module 162 in FIG. 1; Figure 29 is Figure 35 a structural schematic view of the first connecting seat 163 in FIG. 1.

[0157] As shown in FIG. 1, the middle beam 1 comprises a split upper beam body 11 and a lower beam body 16, and the lower beam body 16 is located below the upper beam body 11. In the embodiment, the lower beam body 16 is installed at the middle region of the upper beam body 11 in the longitudinal direction, which can well realize the fish belly type structure design of the middle beam 1 with shorter ends and higher middle, and can ensure the structural strength requirement. Figure 31 Figure 24 In addition, the split design of the upper beam body 11 and the lower beam body 16 can be designed and manufactured respectively, so as to adjust the wall thickness and strength of the upper beam body 11 and the lower beam body 16 according to the needs, which can greatly avoid overdesign of the strength, and can effectively reduce the self weight of the middle beam 1, facilitate the assembly, transportation and assembly of the middle beam 1, and also facilitate the lightweight design of the car body.

[0158] More importantly, the upper beam body 11 and the lower beam body 16 are connected by the connecting piece 6. Therefore, there is no problem of welding smoke collection in the connection of the upper beam body 11 and the lower beam body 16, the energy consumption is low, the green level in the manufacturing process of the car body is significantly improved, and the environmental protection is more beneficial.

[0159] In addition, since the lower beam body 16 is only located at the longitudinal middle region of the upper beam body 11, the longitudinal impact and traction load of the railway flat car body are mainly borne by the upper beam body 11, and basically do not act on the connection region of the upper beam body 11 and the lower beam body 16. That is to say, the connecting piece 6 connecting the upper beam body 1 and the lower beam body 16 basically does not need to bear the longitudinal impact and traction load of the railway flat car body, the shear stress borne by the connecting piece 6 is small, the connecting piece 6 is not easy to be damaged, and the connection reliability of the upper beam body 11 and the lower beam body 16 is beneficial to be ensured.

[0160] As shown in FIG. 1, the main body of the upper beam body 11 is a full-length beam body extending in the longitudinal direction, which is used to mainly transfer the longitudinal impact and traction load of the railway flat car body. The upper beam body 11 is also provided with some accessory parts which can be installed on the upper beam body 11 through the connecting piece 6, so as to reduce the welding smoke and improve the green level of production.

[0161] As shown in FIG. 1, the main body of the upper beam body 11 is a full-length beam body extending in the longitudinal direction, which is used to mainly transfer the longitudinal impact and traction load of the railway flat car body. The upper beam body 11 is also provided with some accessory parts which can be installed on the upper beam body 11 through the connecting piece 6, so as to reduce the welding smoke and improve the green level of production. Figure 25

[0162] ​​The upper beam body 11 can be an equal-height beam body, which, as mentioned above, includes a first top plate 111, two first side plates 112, and two first support portions 113, and the lower beam body 16 can be mounted to the first support portions 113. In actual applications, the upper beam body 11 can be made of a cold-bent profile to ensure structural strength.

[0163] It should be understood that the specific structural form of the upper beam body 11 is not limited to the cold-bent U-shaped beam described above, and other structural forms can also be used as long as the use requirements are met. For example, the upper beam body 11 can also include two separate beams arranged separately in the transverse direction, and then the two separate beams are connected by a connecting structure to form a separate upper beam body 11, which is also feasible.

[0164] The types of the accessory components can be diverse and are associated with the use requirements of the middle beam 1. The accessory components can include a front drawbar seat 19, a rear drawbar seat 110, a center plate seat 64, a first reinforcing seat 17, an impact seat connecting plate 15, an impact seat 18, a bottom cover plate 12, and an upper center plate 65.

[0165] Taking the cold-bent U-shaped beam as an example, the front drawbar seat 19, the rear drawbar seat 110, the center plate seat 64, and the first reinforcing seat 17 can be arranged inside the U-shaped portion. The front drawbar seat 19 and the rear drawbar seat 110 are used to mount a drawbar or the like. The center plate seat 64 is used to mount the upper center plate 65. The first reinforcing seat 17 is used to improve the structural strength of the upper beam body 11. The number of the first reinforcing seat 17 can be multiple, and each first reinforcing seat 17 can be arranged inside the U-shaped portion at intervals in the longitudinal direction. The specific structural form of the first reinforcing seat 17 is not limited here, and in actual applications, a person skilled in the art can determine it according to the mounting position of the first reinforcing seat 17, the reinforcing requirements of the upper beam body 11, and the like.

[0166] The impact seat connecting plate 15 can be arranged at one longitudinal end of the upper beam body 11, and the impact seat 18 can be mounted to the impact seat connecting plate 15 to be indirectly mounted to the upper beam body 11.

[0167] The upper center plate 65 can be located below the bottom cover plate 12, and the connecting member 6 can connect the upper center plate 65, the bottom cover plate 12, and the center plate seat 64, and the bottom cover plate 12 can improve the connection strength between the upper center plate 65 and the center plate seat 64. The upper center plate 65 is used to connect with a lower center plate of a bogie 200 to realize the connection between the car body 100 and the bogie 200.

[0168] In combination Figures 26-28 and Figure 29The lower beam 16 includes two end beam modules 161 and one middle beam module 162. Both end beam modules 161 are mounted on the longitudinal sides of the middle beam module 162 via connectors 6. The middle beam module 162 is a beam of uniform height, while the end beam modules 161 are at least partially variable-height beams in the longitudinal direction. The height of the variable-height beams gradually increases along the longitudinal direction near the middle beam module 162 to form a variable cross-section region for the entire middle beam 1. Thus, the lower beam 16 forms a fish-belly shaped structure that is low at both ends and high in the middle, ensuring the structural strength of the middle beam 1. The low ends of the fish-belly shaped structure can accommodate the connection with the bogie 200 and utilize the strength of the bogie 200 to achieve a reasonable distribution and adaptive design of vertical dimensions. Other embodiments of the lower beam 16 also adopt a design that is low at both ends and high in the middle, which will not be described further.

[0169] With this configuration, the lower beam 16 can also be a split structure, and the end beam module 161 and the middle beam module 162 can be manufactured separately so that their respective wall thickness and strength can be adjusted as needed. This can largely avoid over-design of strength, thereby effectively reducing the self-weight of the lower beam 16 and the middle beam 1, facilitating the assembly, transportation and assembly of the middle beam 1, and contributing to the lightweight design of the vehicle body.

[0170] Furthermore, the aforementioned split design concentrates the variable cross-section area in the end beam module 161, which facilitates the design and manufacturing of the end beam module 161 and the middle beam module 162.

[0171] like Figure 31 and Figure 32 As shown, the end beam module 161 may include an end lower cover plate 161a and two first side beams 161b. Both first side beams 161b can be installed on the end lower cover plate 161a. The two first side beams 161b can be arranged opposite each other in the lateral direction, and both first side beams 161b can be connected to the upper beam body 11 through the connector 6.

[0172] The first side beam 161b and the end lower cover plate 161a can be connected by welding. This is because the longitudinal dimension of the end beam module 161 is much smaller than that of the vehicle body 100 (generally not exceeding 2m), making dust collection relatively easy during manufacturing. Alternatively, the first side beam 161b and the end lower cover plate 161a can also be connected using the aforementioned connector 6. This further reduces welding and welding fumes, improving the environmental friendliness of production. Here, the embodiments of this application do not limit the specific structural form of the first side beam 161b. In practical applications, those skilled in the art can configure it according to specific needs, as long as it meets the requirements of use.

[0173] In the embodiments shown in the accompanying drawings, asFigure 33 and Figure 32 As shown in FIG. 16, the first side beam part 161b can be in L shape, including a horizontal plate part 161b-1 and a vertical plate part 161b-2. The vertical plate part 161b-2 can be connected with the end lower cover plate 161a, and the specific connection process can be welding, connecting piece 6 connection, etc. The horizontal plate part 161b-1 can be connected with the upper beam body 11 through the connecting piece 6, and specifically can be connected with the first support part 113 described above.

[0174] The end lower cover plate 161a can include an upper plate part 161a-1 and a lower plate part 161a-2 which are arranged in the up-down direction. The upper plate part 161a-1 and the lower plate part 161a-2 can be connected through the inclined plate part 161a-3, and the inclined plate part 161a-3 and the upper plate part 161a-1 and the lower plate part 161a-2 can all be arranged at an angle to form the variable height design of the end beam module 161. The upper plate part 161a-1 can be connected with the upper beam body 11 through the connecting piece 6, and specifically can be connected with the bottom cover plate 12 and the first support part 113 described above. The lower plate part 161a-2 can be connected with the middle beam module 162 through the connecting piece 6 to build the connection relationship between the end beam module 161 and the middle beam module 162.

[0175] Further, the end beam module 161 can further include a second reinforcing seat 161c, which is used at least to connect two first side beam parts 161b to strengthen the structural strength of the end beam module 161. The second reinforcing seat 161c and the first side beam part 161b can be connected by welding process, because the size of the end beam module 161 is relatively small, and it is relatively easy to collect welding fume; of course, the second reinforcing seat 161c and the first side beam part 161b can also be connected by the connecting piece 6 to reduce welding fume to a greater extent.

[0176] In specific practice, the second reinforcing seat 161c can also be connected with the end lower cover plate 161a to greatly improve the structural strength of the end beam module 161.

[0177] Here, the embodiments of the present application do not limit the specific structural form of the second reinforcing seat 161c, and in actual application, those skilled in the art can set it according to specific needs, as long as it can meet the requirements of use. Exemplarily, the second reinforcing seat 161c can be a straight plate, such as Figure 33 the second reinforcing seat 161c located on the left side; or the second reinforcing seat 161c can also be a T-shaped plate, such as Figure 32 the second reinforcing seat 161c located on the right side.

[0178] As shown in FIG. 16, the first side beam part 161b can be in L shape, including a horizontal plate part 161b-1 and a vertical plate part 161b-2. The vertical plate part 161b-2 can be connected with the end lower cover plate 161a, and the specific connection process can be welding, connecting piece 6 connection, etc. The horizontal plate part 161b-1 can be connected with the upper beam body 11 through the connecting piece 6, and specifically can be connected with the first support part 113 described above. Figure 32As shown, the middle beam module 162 is also a split structure, including two second side beam portions 162a and a plurality of third reinforcing seats 162b. Each third reinforcing seat 162b is connected to the two second side beam portions 162a through the connecting member 6, so as to improve the structural strength of the middle beam module 162. Each second side beam portion 162a can be connected to the upper beam body 11 through the connecting member 6.

[0179] The second side beam portion 162a is in a U shape, and can be a cold-bent channel steel, including an upper side plate 162a-1, a lower side plate 162a-2, and a side vertical plate 162a-3 connecting the upper side plate 162a-1 and the lower side plate 162a-2. The upper side plate 162a-1 can be connected to the upper beam body 11 through the connecting member 6, and specifically can be connected to the aforementioned first support portion 113. The lower side plate 162a-2 can be connected to the end beam module 161 through the connecting member 6, and specifically can be connected to the lower plate portion 161a-2. The third reinforcing seat 162b can be connected to the side vertical plate 162a-3 of the two second side beam portions 162a.

[0180] It can be known that the specific structural form of the third reinforcing seat 162b is not limited in the embodiment of the present application, and the person skilled in the art can set it according to the specific needs in actual application, as long as it can meet the use requirements. Exemplarily, as shown in Figure 34 The third reinforcing seat 162b can be a U-shaped plate, two side plate portions of the U-shaped plate can be connected to the second side beam portion 162a, and a connecting plate portion can be further arranged between the two side plate portions, so as to strengthen the structural strength of the third reinforcing seat 162b. According to different positions of the third reinforcing seat 162b, the longitudinal dimension of the third reinforcing seat 162b can be different, so as to meet the strengthening requirements at different positions.

[0181] As shown in Figure 34 The lower beam body 16 can further include a first connecting seat 163. The end lower cover plate 161a and the two first side beam portions 161b can be connected to the first connecting seat 163 through the connecting member 6, and specifically, the first side beam portion 161b can be connected to the first connecting seat 163 through the vertical plate portion 161b-2. The first connecting seat 163 can be connected to the middle beam module 162 through the connecting member 6, and specifically can be connected to the side vertical plate 162a-3.

[0182] Here, the specific structural form of the first connecting seat 163 is not limited in the embodiment of the present application, and the person skilled in the art can set it according to the specific needs in actual application, as long as it can meet the use requirements. Exemplarily, as shown in Figure 30As shown, the first connecting seat 163 can include two connecting side plates 163a, a connecting bottom plate 163b, and a connecting partition plate 163c for connecting the two connecting side plates 163a and the connecting bottom plate 163b to improve the structural strength of the first connecting seat 163. Each of the two connecting side plates 163a can be connected to the two first side beam portions 161b and the two second side beam portions 162a, and the connecting bottom plate 163b can be connected to the lower plate portion 161a-2.

[0183] Further, as shown in some embodiments, the lower beam body 16 can further include a second connecting seat 164 which can also connect the end beam module 161 and the middle beam module 162. Specifically, the second connecting seat 164 can be connected to the aforementioned transverse plate portion 161b-1 and the upper side plate 162a-1. Figure 35

[0184] The first connecting seat 163 is located between the two first side beam portions 161b and between the two second side beam portions 162a, and thus the first connecting seat 163 is equivalent to an inner connecting seat. The second connecting seat 164 is located laterally outside the first side beam portion 161b and laterally outside the second side beam portion 162a, and thus the second connecting seat 164 is equivalent to an outer connecting seat. Through the cooperation of the inner connecting seat and the outer connecting seat, the connection reliability of the end beam module 161 and the middle beam module 162 can be improved to a greater extent.

[0185] In the above-mentioned middle beam 1, weight-reducing holes and process holes can be configured as needed to achieve the technical purpose of facilitating operation and weight reduction. The weight-reducing holes and process holes are shown in the drawings and will not be described one by one here.

[0186] Of course, the lower beam body 16 of the middle beam 1 is not limited to the above-mentioned structure, and the upper beam body 11 of the middle beam 1 can refer to the structure shown in Figure 31 It is understood that the lower beam body 16, for example, Figure 26 As shown, Figures 36-40 is a structural schematic view of a lower beam body 16 in an embodiment of the present application; Figure 36 is a front view of Figure 37 ; Figure 36 is a lateral view of Figure 38 ; Figure 37 is a partial view of Figure 39 ; Figure 37 is a connection structure view of the lower beam body 16, the bottom cover plate 12, and the first support portion 113.

[0187] As shown in Figure 40 and Figure 36 ​As shown, the lower beam body 16 is also a variable height beam body, used to form the variable cross-section portion of the middle beam 1, but the structural form is different from the above embodiment. The lower beam body 16 includes a bottom cover plate beam 165 and two side beams 166, which can be arranged opposite in the transverse direction, and both of which can be connected with the bottom cover plate beam 165. The bottom cover plate beam 165 and the two side beams 166 can be connected with the upper beam body 11 through the connecting piece 6.

[0188] The side beam 166 and the bottom cover plate beam 165 can be connected by welding process, because the longitudinal size of the lower beam body 12 is much smaller than the vehicle body 100, and the collection of welding fume is relatively easy during the manufacturing process. Of course, the side beam 166 and the bottom cover plate beam 165 can also be connected by the aforementioned connecting piece 6, so that welding can be reduced to a greater extent, and welding fume can be reduced to a greater extent, thereby improving the environmental protection of production.

[0189] As shown in Figure 37 The side beam 166 can generally present an L shape, including a horizontal plate portion 166a and a vertical plate portion 166b. The vertical plate portion 166b can be connected with the bottom cover plate beam 165, and the specific connection process can be welding, connecting piece 6 connection, etc. The horizontal plate portion 166a can be connected with the upper beam body 11, and specifically can be connected with the first support portion 113.

[0190] The bottom cover plate beam 165 can be an integrally formed bent plate, so that the lower beam body 12 can form an integral module. The bottom cover plate beam 165 can include two upper plates 165a and a lower plate 165b, which are arranged in a staggered manner in the up-down direction. The lower plate 165b and the upper plate 165a can be connected by a transition plate 165c, the transition plate 165c and the upper plate 165a can be arranged at an angle, and the transition plate 165c and the lower plate 165b can be arranged at an angle, so as to realize the variable height design of the entire lower beam body 16. The side beam 166 can be connected with the lower plate 165b and the transition plate 165c, and the upper plate 165a can be connected with the upper beam body 11 through the connecting piece 6.

[0191] The upper plate 165a can be connected with the bottom cover plate 12 and the upper beam body 11 through the connecting piece 6, and specifically can be connected with the first support portion 113 of the upper beam body 11. The bottom cover plate 12 can also improve the connection strength of the upper plate 165a and the upper beam body 11. The side beam 166 can be connected with the upper beam body 11 through the connecting piece 6, and specifically can be connected with the first support portion 113 of the upper beam body 11.

[0192] As shown in Figure 38 and Figure 39As shown, the lower beam body 16 can further include a connecting plate 167, which can be connected with the upper beam body 11 and the bottom cover plate 12 through the connecting member 6, and connected with the upper beam body 11 and the side beam 166 through the connecting member 6. That is, the connecting plate 167 can form a connecting relationship between the side beam 166 and the bottom cover plate 12, and can further ensure the connecting strength between the lower beam body 16 and the upper beam body 11.

[0193] In some embodiments, as shown in Figure 40 As shown, the thickness of the horizontal plate part 166a of the side beam 166 can be less than the thickness of the bottom cover plate 12. In order to facilitate the connection between the connecting plate 167 and the horizontal plate part 166a and the bottom cover plate 12, the lower beam body 16 can further be provided with an adjusting pad 168, which can be located between the connecting plate 167 and the side beam 166, and used to compensate for the thickness difference between the horizontal plate part 166a and the bottom cover plate 12. In the specific assembly, the connecting member 6 can also pass through the adjusting pad 168 to connect the first support part 113, the horizontal plate part 166a, the adjusting pad 168 and the connecting plate 167.

[0194] Further, the lower beam body 16 can further include a reinforcing seat structure 169, which can connect the two side beams 166, and the reinforcing seat structure 169 can be connected with the bottom cover plate beam 165, and the specific connecting manner can be welding or connecting member 6 connection, etc.

[0195] The upper beam body 11 of the middle beam 1 is described in detail in Figure 40 It is understood that the lower beam body 16 can also be Figure 26 As shown in the structure, Figures 41-46 is a structure schematic view of the lower beam body 16 in another embodiment of the present application;

[0196] Figure 41 is a front view of Figure 42 ; Figure 41 is a structure schematic view of Figure 43 the upper connecting plate; Figure 42 is a structure schematic view of Figure 44 a specific embodiment of the partition plate; Figure 42 is a structure schematic view of Figure 45 another specific embodiment of the partition plate; Figure 42 is a structure schematic view of the upper beam body 11 matched with Figure 46 the lower beam body 16, which is a transverse sectional view.

[0197] In detail, as shown in Figure 41 and Figure 40 , the lower beam body 16 can include a bottom base beam 1610, a link beam 1611 and two side beams 1612.

[0198] The side beams 1612 can be oppositely arranged in the transverse direction. The side beam 1612 can include a middle plate 1612a and two end plates 1612b, which can be located on the longitudinal sides of the middle plate 1612a. The middle plate 1612a and the end plate 1612b are separately arranged. Meanwhile, the middle plate 1612a is also designed in a split manner, and the middle plate 1612a includes a plurality of upper connecting plates 1612a-1 and lower connecting plates 1612a-2 arranged in a split manner; the upper connecting plate 1612a-1 and the lower connecting plate 1612a-2 can be arranged in a staggered manner in the vertical direction, and the end plate 1612b and each lower connecting plate 1612a-2 can be connected to the bottom girder 1610 through the connecting member 6 to realize the connection between the side beam 1612 and the bottom girder 1610.

[0199] The connecting beam 1611 is located between the two side beams 1612, and the connecting beam 1611 includes a plurality of partition plates 1611a. The two side beams 1612 and the partition plates 1611a are connected through the connecting member 6 to realize the connection between the two side beams 1612, thereby improving the structural strength of the lower beam body 16. In addition, the upper connecting plate 1612a-1 and the lower connecting plate 1612a-2 of the same side beam 1612 can also be connected through the partition plate 1611a, which can also realize the connection between the upper connecting plate 1612a-1 and the lower connecting plate 1612a-2 in the middle plate 1612a. The upper connecting plate 1612a-1 and the end plate 1612b can be connected to the upper beam body 11 through the connecting member 6. As shown in Figure 41 The plurality of partition plates 1611a are arranged in an inclined manner, and the adjacent two partition plates 1611a are arranged in opposite directions, so that the upper part of the partition plate 1611a is connected to the upper connecting plate 1612a-1, and the lower part is connected to the lower connecting plate 1612a-2.

[0200] Specifically, as shown in Figure 41 The middle beam 1 further includes a transition connecting beam 11-1 for connecting with the lower beam body 16. The specific structure of the transition connecting beam 11-1 is not limited here, and those skilled in the art can arrange it according to specific needs in actual application, as long as it can meet the requirements of use. In this embodiment, the transition connecting beam 11-1 can be in a U shape, including a bottom plate 11-1a and a side plate 11-1b, wherein the bottom plate 11-1a can be connected to the upper beam body 11 through the connecting member 6, specifically connected to the first support portion 113, and the side plate 11-1b is used to connect with the lower beam body 16 to realize the connection between the side beam 1612 and the upper beam body 11.

[0201] In combination with Figure 46The bottom surface of the end plate 1612b may include a sloped portion 1612b-1. Along the direction away from the middle plate 1612a, the sloped portion 1612b-1 may gradually slope upward, thus forming a variable-height beam body of the lower beam body 16, with the height gradually increasing along the longitudinal direction away from the middle of the middle beam 1.

[0202] Combination Figure 42 Both the upper connecting plate 1612a-1 and the lower connecting plate 1612a-2 can include a main plate portion 1612a-1a and a support plate portion 1612a-1b. The main plate portion 1612a-1a of the lower connecting plate 1612a-2 can be connected to the bottom base beam 1610 via connector 6, while the main plate portion 1612a-1a of the upper connecting plate 1612a-1 can be connected to the upper beam 11 via connector 6. The support plate portion 1612a-1b can be connected to the partition plate 1611a via connector 6. The structures of the upper connecting plate 1612a-1 and the lower connecting plate 1612a-2 are basically the same, but arranged in opposite directions.

[0203] For the same upper connecting plate 1612a-1 or lower connecting plate 1612a-2, the number of support plates 1612a-1b is not limited. Figure 43 In the implementation of the method, there are two support plates 1612a-1b. In addition, there may be one, three or more support plates 1612a-1b. These are all possible solutions.

[0204] Combination Figure 43 and Figure 44 The partition 1611a can be U-shaped, including a base plate portion 1611a-1 and two connecting plate portions 1611a-2. The two connecting plate portions 1611a-2 can be connected to each other by a connector 6 and two side beams 1612 respectively.

[0205] like Figure 45 As shown, the middle beam 1 also includes a reinforcement plate 11-2, which is a structural reinforcement plate. The reinforcement plate 11-2 can be connected to the bottom cover plate 12 through the connector 6, and the reinforcement plate 11-2 can also be connected to the transition connecting beam 11-1 through the connector 6, so as to realize the connection between the transition connecting beam 11-1 and the bottom cover plate 12, and can improve the connection reliability between the transition connecting beam 11-1 and the upper beam 11, as well as between the bottom cover plate 12 and the upper beam 11, and can further improve the structural strength of the upper beam 11.

[0206] like Figure 46 As shown, Figures 47-53 for Figure 47 Schematic diagram of the bogie structure; Figure 1 for Figure 48 Schematic diagram of the structure of the coupler buffer device; Figure 1 for Figure 49Structure diagram of the non-metallic wearing plate installed on the car coupler from plate; Figure 48 For Figure 50 Structure diagram of the braking device; Figure 1 For Figure 51 Top view; Figure 50 For Figure 52 Structure diagram of the first container lock; Figure 2 For Figure 53 Structure diagram of the second container lock.

[0207] The bogie 200 is arranged below the car body 100, and is mainly used for supporting the car body 100, bearing and transmitting various loads and forces between the car body 100 and the wheel or between the wheel rail and the car body 100, and uniformly distributing the axle load. The braking device 400 is used for braking the vehicle, and includes a hand brake 401, a derailment automatic brake device 402, an air brake valve 403, and an empty and loaded car adjustment device 404. The specific structure of the bogie 200 and the braking device 400 can be understood with reference to the prior art, and will not be described here.

[0208] In addition, the car coupler buffer device 300 is arranged at the end of the car body 100, and includes a car coupler from plate 301 and a coupler tail frame 302. The basic structure of the car coupler buffer device 300 can also be understood with reference to the prior art, except that in the embodiment, the non-metallic wearing plate 302 is arranged on the car coupler from plate 301 in the car coupler buffer device 300, so that the friction pair of the car coupler from plate 301 and the coupler tail frame 302 can be changed, and the problem of the wearing plate coupler tail frame 302 can be improved.

[0209] As Figure 2 shown, in combination with Figure 1 Figure 51 , 52 The first container lock 7 can be arranged at the transverse two ends of the large cross beam 21, that is, the first container lock 7 is arranged at each end, or in other words, the first container lock 7 is arranged at the outer end of each large cross beam module 21A. The second container lock 8 is arranged at the transverse two ends of the end beam 5, that is, the second container lock 8 is arranged at each end, or in other words, the second container lock 8 is arranged at the outer end of each end beam module 5A. The second container lock 8 is a single fixed lock seat structure, and the first container lock 7 is a double-head translation lock seat structure. The first container lock 7 and the second container lock 8 can be connected to the corresponding large cross beam 21 and end beam 5 through the connecting piece 6, so that the welding can be reduced, and of course, the volume of the lock is smaller, and the welding to the corresponding connecting beam position is also possible.

[0210] The above is only a preferred embodiment of the present application, and it should be noted that for ordinary skilled persons in the art, several improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements should also be considered within the protection scope of the present application.

Claims

1. A railway flatcar body, characterized by, The vehicle body (100) comprises a plurality of cross beams, the cross beams are large cross beams (21) or small cross beams (22), the longitudinal dimension of the large cross beams (21) is greater than the longitudinal dimension of the small cross beams (22); Each of the beam modules of the large cross beams (21) comprises two cover plates and two web plates (213), the two cover plates are oppositely arranged in the vertical direction, the two web plates (213) are oppositely arranged in the longitudinal direction, and the two web plates (213) are connected with the two cover plates; The cover plate and the web plate (213) are connected with the side beam (3) through the corresponding connecting piece (6), and the cover plate and the web plate (213) are connected with the middle beam (1) through the corresponding connecting piece (6). The vehicle body (100) comprises a plurality of cross beams, the cross beams are large cross beams (21) or small cross beams (22), the longitudinal dimension of the large cross beams (21) is greater than the longitudinal dimension of the small cross beams (22); Each of the beam modules of the small cross beams (22) is a bent beam, the bent beam comprises a first plate portion (221) and a second plate portion (222) which are oppositely arranged in the vertical direction, and a third plate portion (223) which connects the first plate portion (221) and the second plate portion (222); The cover plate and the web plate (213) are connected with the side beam (3) through the corresponding connecting piece (6), and the cover plate and the web plate (213) are connected with the middle beam (1) through the corresponding connecting piece (6).

2. The railway flatcar body of claim 1, wherein, The vehicle body (100) comprises a plurality of cross beams, the cross beams are large cross beams (21) or small cross beams (22), the longitudinal dimension of the large cross beams (21) is greater than the longitudinal dimension of the small cross beams (22); Each of the beam modules of the small cross beams (22) is a bent beam, the bent beam comprises a first plate portion (221) and a second plate portion (222) which are oppositely arranged in the vertical direction, and a third plate portion (223) which connects the first plate portion (221) and the second plate portion (222); ​ 3. The railway flatcar body of claim 1, wherein, ​ ​ The first plate part (221) is connected by corresponding connecting pieces (6) and upper parts of the middle beam (1) and the side beam (3); the second plate part (222) is connected by corresponding connecting pieces (6) and lower parts of the middle beam (1) and the side beam (3); the third plate part (223) is provided with a transition connecting plate (224) connected by corresponding connecting pieces (6) and the middle beam (1) and the side beam (3).

4. The railway flatcar body of claim 1, wherein, The distance between the outer end of the lower cover plate (42) and the upper cover plate (41) is less than the distance between the inner end of the lower cover plate (42) and the upper cover plate (41); The outer end of the upper cover plate (41) is connected with the side beam (3) through corresponding connecting pieces (6), and the inner end of the upper cover plate (41) is connected with the middle beam (1) through corresponding connecting pieces (6). The bottom of the outer end of the lower cover plate (42) is provided with a first support seat (44) connected with the side beam (3) through corresponding connecting pieces (6), and the inner end of the lower cover plate (42) is connected with the middle beam (1) through corresponding connecting pieces (6).

5. The railway flatcar body of claim 1, wherein, Each beam module of the end beam (5) comprises an end beam body (51) extending in the transverse direction; the end beam body (51) comprises a top plate part (511), a side plate part (512) and a bottom plate part (513), the side plate part (512) is connected between the top plate part (511) and the bottom plate part (513), and the top plate part (511) and the bottom plate part (513) are located on the same side of the side plate part (512); The outer end of the top plate part (511) is connected with the side beam (3) through corresponding connecting pieces (6), and the inner end of the top plate part (511) is connected with the middle beam (1) through corresponding connecting pieces (6); the outer end of the bottom plate part (513) is connected with the side beam (3) through corresponding connecting pieces (6), and the inner end of the bottom plate part (513) is connected with the middle beam (1) through corresponding connecting pieces (6).

6. The railway flatcar body of claim 5, wherein, Each beam module of the end beam (5) further comprises a support beam (52) connected on the side of the top plate part (511) relatively far away from the side plate part (512), and the support beam (52) is close to the pillow beam (4) relative to the side plate part (512); the bottom of the side beam (3) is provided with a second support seat (32), the middle beam (1) is provided with an end beam connecting plate (13); the outer end of the support beam (52) is connected with the second support seat (32) through corresponding connecting pieces (6), and the inner end of the support beam (52) is connected with the end beam connecting plate (13) through corresponding connecting pieces (6); the inner end of the top plate part (511) is also connected with the end beam connecting plate (13) through corresponding connecting pieces (6).

7. The railway flatcar body of claim 1, wherein, The upper beam body (11) extends in the longitudinal direction, and the upper beam body (11) comprises a first top plate (111), two first side plates (112) extending downward from the side edges of the first top plate (111), and two first support portions (113) extending outward from the bottom edges of the first side plates (112). The middle beam (1) further comprises a bottom cover plate (12), and the bottom cover plate (12) is connected to the first support portions (113) through corresponding connecting members (6). In the transverse direction, at least part of the bottom cover plate (12) extends out of the first support portions (113), and the at least part of the bottom cover plate (12) extending out of the first support portions (113) is used to connect to the pillow beam (4).

8. The railway flatcar body of claim 7, wherein, The upper beam body (11) further comprises an end beam connecting plate (13) connected to one side of the first side plate (112) facing the side beam (3). The end beam connecting plate (13) comprises a first connecting plate (131) in the same plane as the first top plate (111) and used to connect to the inner end of the beam module of the end beam (5), and a second connecting plate (132) close to the pillow beam (4) relative to the first connecting plate (131) and close to the first support portion (113) relative to the first connecting plate (131), and the second connecting plate (132) is used to connect to the inner end of the beam module of the end beam (5).

9. The railway flatcar body of claim 1, wherein, The vehicle body (100) comprises a plurality of the transverse beams, which are large transverse beams (21) or small transverse beams (22), the longitudinal dimension of the large transverse beams (21) is greater than that of the small transverse beams (22), and the large transverse beams (21) are located in the middle part of the vehicle body (100). The large transverse beams (21) and the end beams (5) are both connected to corresponding locks (6).

10. The railway flatcar body according to any one of claims 1-9, wherein, The lower beam body (16) is installed in the middle region of the upper beam body (11) in the longitudinal direction, and at least two end portions of the lower beam body (16) in the longitudinal direction are variable-height beam bodies, and in the longitudinal direction, the height of the variable-height beam bodies gradually increases in the direction close to the middle part of the lower beam body (16).

11. The railway flatcar body of claim 10, wherein, The lower beam body (16) comprises two end beam modules (161) and one middle beam module (162), and the two end beam modules (161) are respectively installed on the longitudinal sides of the middle beam module (162) through connecting members (6). The middle beam module (162) is an equal-height beam body, and at least part of the end beam modules (161) in the longitudinal direction are variable-height beam bodies, and in the longitudinal direction, the height of the variable-height beam bodies gradually increases in the direction close to the middle beam module (162).

12. The railway flatcar body of claim 10, wherein, The lower beam body (16) comprises a bottom cover plate beam (165) and two side beams (166), the two side beams (166) are oppositely arranged in the transverse direction, and the two side beams (166) are connected with the bottom cover plate beam (165); the bottom cover plate beam (165) and the two side beams (166) are connected with the upper beam body (11) through the connecting pieces (6); The bottom cover plate beam (165) comprises two upper plates (165a) and a lower plate (165b), the upper plates (165a) and the lower plate (165b) are arranged in a staggered manner in the vertical direction, the lower plate (165b) and the upper plates (165a) are connected through a transition plate (165c), the transition plate (165c) and the upper plates (165a) are arranged at an angle, and the transition plate (165c) and the lower plate (165b) are arranged at an angle; the side beams (166) are connected with the lower plate (165b) and the transition plate (165c), and the upper plates (165a) are connected with the upper beam body (11) through the connecting pieces (6); the transition plate (165c) corresponds to a variable-height beam body of the lower beam body (16), and the lower plate (165b) corresponds to an equal-height beam body of the lower beam body (16).

13. The railway flatcar body of claim 10, wherein, The lower beam body (16) comprises a bottom base beam (1610), a connecting beam (1611) and two side beams (1612), the two side beams (1612) are oppositely arranged in the transverse direction, the side beam (1612) comprises a middle plate (1612a) and two end plates (1612b), the two end plates (1612b) are located on the longitudinal sides of the middle plate (1612a), and the middle plate (1612a) and the end plates (1612b) are arranged in a split manner; the middle plate (1612a) comprises a plurality of upper connecting plates (1612a-1) and lower connecting plates (1612a-2) arranged in a split manner, the end plates (1612b) and the lower connecting plates (1612a-2) are connected with the bottom base beam (1610) through the connecting pieces (6); the end plates (1612b) correspond to a variable-height beam body of the lower beam body (16); The connecting beam (1611) is located between the two side beams (1612), the connecting beam (1611) comprises a plurality of partition plates (1611a), the side beams (1612) and the partition plates (1611a) are connected through the connecting pieces (6), the upper connecting plates (1612a-1) and the lower connecting plates (1612a-2) of the same side beam (1612) are connected through the partition plates (1611a), and the upper connecting plates (1612a-1) and the end plates (1612b) are connected with the upper beam body (11) through the connecting pieces (6).

14. The railway flatcar body of any one of claims 1-9, wherein, The middle beam (1) is provided with a first lower support part (11c), the side beam (3) is provided with a second lower support part (31), the first lower support part (11c) and the second lower support part (31) are oppositely arranged, and the connecting beam can be installed from top to bottom on the first lower support part (11c) and the second lower support part (31).

15. A railway flat car comprising a car body (100), characterized in that The car body (100) is the car body (100) of the railway flat car in any one of claims 1-14.

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