A vehicle body and a rail vehicle

Abstract

The application discloses a vehicle body and a rail vehicle, and relates to the technical field of rail vehicles. The vehicle body comprises a traction beam, a coupler mounting seat, a fixing piece and a fastener. The traction beam comprises two beam structures arranged in parallel along a first direction and a connecting piece for connecting the two beam structures, the beam structure is a straight pipe structure, the bottom surface of the beam structure is a plane, the bottom wall of each of the two beam structures is provided with a first mounting hole; the top surface of the base of the coupler mounting seat is a plane, used for abutting against the bottom surface of the traction beam structure, the base is provided with a second mounting hole, the bottom of the coupler mounting seat is provided with a rotary joint for connecting a coupler, and the length direction of the rotary joint is perpendicular to the top surface of the base; the fixing piece is inserted into the first mounting hole and the second mounting hole, and the tail of the fixing piece is matched with the fastener to fix the coupler mounting seat. The vehicle body meets the traction demand, the coupler mounting seat and the traction beam longitudinally occupy a smaller space, and is suitable for various rail vehicles such as trains, subways and high-speed rails.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rail vehicle technology, and more particularly, to a car body. In addition, the present application also relates to a rail vehicle comprising the car body. BACKGROUND

[0002] The car bodies of the rail vehicle are usually connected by couplers, and the couplers are used to transmit and buffer the load between the vehicles, so that the car bodies can move synchronously under the traction of the car head. The couplers are usually installed at the end of the traction beam of the car body.

[0003] In the existing rail vehicle, the fish belly type traction beam is usually used to cooperate with the coupler mounting seat, and the bottom surface of the fish belly type traction beam is usually a gentle curve to avoid stress concentration. However, the use of the fish belly type traction beam to install the coupler requires a relatively large longitudinal space, and with the continuous improvement of the functions of the rail vehicle and the increase of the equipment, the installation space is relatively small. The existing car body has many limitations for the development of the rail vehicle.

[0004] In summary, how to change the current situation that the car body occupies a large space is a problem that needs to be solved by the technical personnel in the field. SUMMARY

[0005] Therefore, the purpose of the present application is to provide a car body which has a smaller longitudinal space occupied by the coupler mounting seat and the traction beam while meeting the traction requirements.

[0006] Another purpose of the present application is to provide a rail vehicle comprising the car body.

[0007] In order to achieve the above purpose, the present application provides the following technical solutions:

[0008] A car body comprises:

[0009] A traction beam comprising two beam structures arranged in parallel along a first direction and a connecting piece for connecting the two beam structures, the beam structure being a straight pipe structure, and the bottom surface of the beam structure being a plane, and the bottom wall of the two beam structures each having a first mounting hole;

[0010] A coupler mounting seat, the top surface of the base being a plane, used to fit the bottom surface of the traction beam structure, and the base having a second mounting hole, the bottom of the coupler mounting seat having a rotating joint for connecting the coupler, and the length direction of the rotating joint being perpendicular to the top surface of the base;

[0011] A fixing piece and a fastener, the fixing piece being inserted into the first mounting hole and the second mounting hole, and the tail of the fixing piece cooperating with the fastener to fix the coupler mounting seat.

[0012] Preferably, the beam structure is a tubular structure with a mouth-shaped cross section.

[0013] Preferably, the connecting piece is a rectangular plate structure, the side edges of the connecting piece are spliced and fixed with the top surfaces of the two adjacent beam structures, and the connecting piece is located at the top of the beam structure.

[0014] The traction beam further comprises two reinforcing plates, each of the reinforcing plates is located at the two sides of the coupler mounting seat, and the reinforcing plates are located at the bottom of the beam structure.

[0015] Preferably, the head of the fixing member is located in the inner cavity of the beam structure, and the fastening member is located outside the beam structure.

[0016] And / or, the fixing member is a bolt, and the fastening member is a nut.

[0017] Preferably, the opposite surfaces of the two beam structures each have an operating hole for an operator to install the fixing member.

[0018] Preferably, a stop block is arranged in the inner cavity of the beam structure, the stop block is clamped between the head of the corresponding fixing member and the bottom wall of the corresponding beam structure, and the stop block has a through hole for the fixing member to pass through.

[0019] And / or, the opposite side surfaces of the two beam structures have a stop mounting hole for the stop block to pass through.

[0020] Preferably, the number of the first mounting holes is greater than or equal to two, and each of the first mounting holes is arranged along the length direction of the corresponding beam structure.

[0021] Preferably, the shaft section where the operating hole is located and the shaft section where the stop mounting hole is located are adjacent to the shaft section where the first mounting hole is located.

[0022] Preferably, the rotating joint comprises a support part and a rotating shaft, the support part is located at the bottom of the base, the rotating shaft is arranged between the support part and the base, and the rotating shaft is perpendicular to the top surface of the base.

[0023] The support part comprises a boat-shaped structure and a reinforcing rib, the rotating shaft is located in the groove of the boat-shaped structure, and the reinforcing rib connects the outer side wall of the boat-shaped structure and the base.

[0024] The base is a flat plate structure, the reinforcing rib is a triangular plate structure, one of the right-angled edges of the reinforcing rib is spliced and fixed with the outer side wall of the boat-shaped structure, and the other right-angled edge of the reinforcing rib is spliced and fixed with the bottom surface of the base.

[0025] The coupler is a No. 15 coupler or a 330 type coupler.

[0026] A rail vehicle comprises a vehicle body according to any one of the preceding.

[0027] The vehicle body provided by the application has the following advantages: the traction beam has two beam structures extending in the first direction and fixed into an integral structure by the connecting piece; the beam structure is a hollow tubular structure and meets the strength and stress requirements; the first mounting hole is formed in the top wall of the beam structure and used for connecting the drawbar mounting seat; the drawbar mounting seat is used for mounting and supporting the drawbar; the top surface of the base is a plane, and the first mounting hole is formed in the top surface of the base; after the drawbar mounting seat is placed at the preset position of the traction beam, the top surface of the base is attached to the bottom surface of the beam structure, the second mounting hole is collinear with the first mounting hole, the rotating joint at the bottom of the drawbar mounting seat is connected to the drawbar, and the length direction of the drawbar is parallel to the bottom surface of the base; and the fixing piece is inserted into the collinear first mounting hole and second mounting hole to fix the drawbar mounting seat on the traction beam. In the vehicle body, the drawbar mounting seat is arranged on the bottom surface of the straight-bar traction beam, and the fixing piece passes through the bottom wall of the traction beam in the vertical direction. Therefore, the vehicle body meets the traction requirements, the drawbar mounting seat and the traction beam occupy less space in the longitudinal direction, and the vehicle body is suitable for several different rail vehicles. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on the provided drawings.

[0029] Figure 1 The structural schematic diagram of the specific embodiment provided by the present application is shown in the figure.

[0030] Figure 2 The partial sectional view of the specific embodiment provided by the present application is shown in the figure.

[0031] Figure 3 The stop block installation schematic diagram of the specific embodiment provided by the present application is shown in the figure.

[0032] Figure 4 The front view of the specific embodiment provided by the present application is shown in the figure.

[0033] Figures 1-4 In the figure, the reference signs include:

[0034] 1 is a traction beam, 11 is a beam structure, 111 is a first mounting hole, 112 is a stop mounting hole, 113 is an operation hole, 12 is a connecting piece, 13 is a reinforcing plate, 2 is a drawbar mounting seat, 21 is a base, 22 is a rotating joint, 221 is a support part, 2211 is a boat-shaped structure, 2212 is a reinforcing rib, 222 is a rotating shaft, 3 is a fixing piece, 4 is a fastener, 5 is a stop block, and 6 is a drawbar. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0036] The core of the present application is to provide a car body, which meets the traction demand while the coupler mounting seat and the traction beam occupy less space longitudinally. Another core of the present application is to provide a railway vehicle comprising the car body.

[0037] Please refer to Figures 1 to 4 The present application provides a car body comprising a traction beam 1, a coupler mounting seat 2, a fixing member 3 and a fastening member 4. The traction beam 1 comprises two beam structures 11 arranged in parallel along a first direction and a connecting member 12 for connecting the two beam structures 11, the beam structure 11 is a straight pipe structure, the bottom surface of the beam structure 11 is a plane, and the bottom wall of the two beam structures 11 each has a first mounting hole 111; the top surface of the base 21 of the coupler mounting seat 2 is a plane for fitting the bottom surface of the structure of the traction beam 1, and the base 21 has a second mounting hole, the bottom of the coupler mounting seat 2 has a rotary joint 22 for connecting a coupler 6, and the length direction of the rotary joint 22 is perpendicular to the top surface of the base 21; the fixing member 3 is inserted into the first mounting hole 111 and the second mounting hole, and the tail of the fixing member 3 cooperates with the fastening member 4 to fix the coupler mounting seat 2.

[0038] The traction beam 1 has two beam structures 11 extending along the first direction, and the two beam structures 11 are fixed as an integral structure through the connecting member 12, which can adopt a rod-shaped structure or any other type of structure; further, the beam structure 11 is a hollow tubular structure, and the bottom surface of the beam structure 11 is a plane, which meets the strength and stress requirements. It should be noted that the specific type of the beam structure 11 is not limited, such as a straight trapezoidal cross-section or a hexagonal shape with the top surface and the bottom surface parallel and one side forming a right angle with the top surface, etc., as long as the above requirements are met; the first mounting hole 111 is provided on the bottom wall of the beam structure 11 for connecting the coupler mounting seat 2.

[0039] The coupler mounting base 2 is used to install and support the coupler 6. The top surface of the base 21 is flat, and a first mounting hole 111 is provided on the base 21. After the coupler mounting base 2 is placed at the preset position of the traction beam 1, the top surface of the base 21 is in contact with the bottom surface of the beam structure 11, and the second mounting hole is collinear with the first mounting hole 111. The rotating joint 22 at the bottom of the coupler mounting base 2 is used to connect the coupler 6, so that the length direction of the coupler 6 is parallel to the bottom surface of the base 21. Furthermore, the rotating joint 22 of the coupler mounting base 2 is used to connect the coupler 6, so that the coupler 6 can rotate within a preset stroke in the horizontal plane. The rotating joint 22 is welded to the base 21, or the support structure of the rotating joint 22 is integrally cast with the base 21. It should be noted that the specific type of the rotating joint 22 is not limited, as long as it can achieve the above functions.

[0040] It should be noted that there are no restrictions on the number and distribution of the first mounting hole 111 and the second mounting hole, such as four or five, or their arrangement in a straight line or staggered, as long as the strength requirements are met.

[0041] The fastener 3 is used to insert into the collinear first mounting hole 111 and second mounting hole. Its tail engages with the fastener 4 to fix the coupler mounting seat 2 onto the traction beam 1. It should be noted that the types of fastener 3 and fastener 4 are not limited. For example, bolt and nut engagement, or pin and rod inserted radially along the pin engagement, etc., are all acceptable as long as they can fix the coupler mounting seat 2.

[0042] After assembly, such as Figure 4 As shown, the coupler mounting seat 2 is set on the horizontal bottom surface of the straight rod traction beam 1, and the fixing member 3 passes through the bottom wall of the traction beam 1 in the vertical direction. While meeting the traction requirements, the coupler mounting seat 2 and the traction beam 1 occupy less longitudinal space, making it suitable for various rail vehicles such as trains, subways, and high-speed trains.

[0043] Based on the above embodiments, beam structure 11 is a U-shaped tubular structure, such as... Figure 2 and Figure 3 As shown, this configuration is beneficial to improving the strength and traction performance of the traction beam 1, and the structure is simple and the cost is low.

[0044] Based on the above embodiment, the connector 12 is a rectangular plate structure. The side of the connector 12 is spliced ​​and fixed to the top surface of the two adjacent beam structures 11, and the connector 12 is located at the top of the beam structure 11. The traction beam 1 also includes two reinforcing plates 13, each reinforcing plate 13 is located on both sides of the coupler mounting seat 2, and the reinforcing plate 13 is located at the bottom of the beam structure 11.

[0045] like Figure 2 and Figure 3As shown, the tops of two parallel beam structures 11 are connected by connectors 12, and the connectors 12 are rectangular plate structures. These rectangular plate structures also extend along the first direction and are parallel to the top surface of the beam structures 11, with their two sides intersecting the top surface of the beam structures 11. Therefore, the top surfaces of the beam structures 11 can be fixed together by riveting or welding. Figure 1 As shown, the bottom of the two parallel beam structures 11 is connected by a reinforcing plate 13. The reinforcing plate 13 can be fixedly connected to the beam structure 11 by welding or other arbitrary fixing methods. The coupler mounting seat 2 is set near the coupler mounting seat 2 to achieve local reinforcement and improve the tensile strength of the traction beam 1. It should be noted that the type of reinforcing plate 13 is not limited. For example, it can be a plate structure with an arc edge on one side and a straight edge on the other side, or a rectangular plate structure, as long as it effectively improves the tensile strength of the traction beam 1.

[0046] Based on the above embodiment, the head of the fastener 3 is located in the inner cavity of the beam structure 11, and the fastener 4 is located outside the beam structure 11.

[0047] like Figure 1 and Figure 2 As shown, in this embodiment, the tail of the fixing member 3 extends from the inside of the beam structure 11 through the first mounting hole 111 to the outside of the beam structure 11. The head of the fixing member 3 abuts or snaps against the beam structure 11, and the fixing member 3 cooperates with the fastener 4 to fix the coupler mounting seat 2. During assembly, as... Figure 4 As shown, the fastener 3 passes through the first mounting hole 111 and the second mounting hole from top to bottom, and the head of the fastener 3 engages with the beam structure 11. This arrangement facilitates the installation of the fastener 3 and the fastener 4.

[0048] In some embodiments, the fixing member 3 is a bolt, and the fastener 4 is a nut, such as Figure 2 As shown, with this configuration, the fasteners 3 and 4 can be standard parts, which effectively reduces costs and facilitates maintenance operations.

[0049] Based on the above embodiment, both opposing surfaces of the two beam structures 11 have operating holes 113 for the operator to install the fixing component 3, such as... Figure 3 As shown, a certain space is left between the two parallel beam structures 11, and through holes are provided on the opposite sides of the two beam structures 11 as operating holes 113. The operating holes 113 are used for the operator to install the internal components of the beam structures 11. With this configuration, the vehicle body can complete the fixing of the coupler mounting seat 2 at any step. That is, the vehicle body can install the coupler 6 after the traction beam 1 and other components are installed, which is beneficial to the assembly operation of the vehicle body. Furthermore, the first mounting hole 111 and the operating hole 113 are not coplanar, which helps to reduce the stress concentration of the traction beam 1.

[0050] Based on the above embodiment, a stop block 5 is provided in the inner cavity of the beam structure 11. The stop block 5 is sandwiched between the head of the corresponding fixing member 3 and the bottom wall of the corresponding beam structure 11, and the stop block 5 has a through hole for the fixing member 3 to pass through.

[0051] Stop block 5 is used to improve connection strength and protect traction beam 1, such as Figure 2 As shown, the bottom surface of the stop block 5 is the same as the inner surface of the bottom wall of the beam structure 11 at a preset position, and is used to fit the surface of the bottom wall of the beam structure 11. The stop block 5 has a through hole along its own thickness direction. During assembly, after the stop block 5 is placed at the preset position in the inner cavity of the beam structure 11, the through hole of the stop block 5 is collinear with the corresponding first mounting hole 111. The fastener 3 is inserted into the corresponding through hole and the first mounting hole 111. After installation, the head of the fastener 3 abuts or snaps against the stop block 5, and the fastener 3 cooperates with the traction beam 1 through the stop block 5. With this setting, the stress concentration of the traction beam 1 is low.

[0052] In some embodiments, such as Figure 1 and Figure 2 As shown, the two beam structures 11 have stop mounting holes 112 on their opposite sides for the stop blocks 5 to pass through. During assembly, the stop blocks 5 are inserted into the inner cavity of the beam structure 11 through the stop mounting holes 112, and the stop blocks 5 are placed in place through the operating holes 113. This arrangement effectively ensures that the car body can be fixed in any step by the coupler mounting seat 2.

[0053] Based on the above embodiments, the number of first mounting holes 111 is greater than or equal to two, and each first mounting hole 111 is arranged along the length direction of the corresponding beam structure 11, such as... Figure 3 As shown, this configuration helps to reduce the stress concentration of the traction beam 1.

[0054] Based on the above embodiment, the shaft segment where the operating hole 113 is located and the shaft segment where the stop mounting hole 112 is located are both adjacent to the shaft segment where the first mounting hole 111 is located. This arrangement helps to further reduce the stress concentration of the traction beam 1.

[0055] Optionally, the first direction is set to the horizontal, the shaft segment where the operating hole 113 is located is located to the left of each first mounting hole 111, and the shaft segment where the stop mounting hole 112 is located is located to the right of each first mounting hole 111.

[0056] Preferred, such as Figure 3As shown, each first mounting hole 111 and operation hole 113 is distributed on the outer wall of the corresponding beam structure 11 along the length direction of the beam structure 11, and the axis segment where the operation hole 113 is located is located at the middle position of the axis segment where each first mounting hole 111 is located. In this way, the operator can conveniently install parts in the first mounting holes 111 on both sides of the operation hole 113. In addition, the axis segment where the stop mounting hole 112 is located is located on one side of the axis segment where each first mounting hole 111 is located. In this way, the degree of force concentration of the traction beam 1 is greatly reduced, and the tensile strength of the traction beam 1 is improved.

[0057] On the basis of the above embodiment, the rotating joint 22 comprises a support part 221 and a rotating shaft 222. The support part 221 is located at the bottom of the base 21, and the rotating shaft 222 is arranged between the support part 221 and the base 21 and is perpendicular to the top surface of the base 21. The support part 221 comprises a boat-shaped structure 2211 and a reinforcing rib 2212. The rotating shaft 222 is located in the groove of the boat-shaped structure 2211, and the reinforcing rib 2212 connects the outer side wall of the boat-shaped structure 2211 and the base 21. The base 21 is a flat plate structure, and the reinforcing rib 2212 is a triangular plate structure. One of the right angles of the reinforcing rib 2212 is spliced and fixed with the outer side wall of the boat-shaped structure 2211, and the other right angle of the reinforcing rib 2212 is spliced and fixed with the bottom surface of the base 21. The coupler 6 is a No. 15 coupler or a 330-type coupler.

[0058] In the embodiment, as shown in Figure 1 The support part 221 is located at the bottom of the base 21. Preferably, the support part 221 and the base 21 are integrally formed or integrally connected by welding. The support part 221 and the base 21 jointly act to install and support the rotating shaft 222. The coupler mounting seat 2 is rotatably connected to the coupler 6 through the rotating shaft 222. It should be noted that the type of the support part 221 is not limited, such as a shell structure or a bent rod structure, as long as it can be installed and supported with the base 21 to meet the tensile strength. It should be noted that the technology of arranging the rotating shaft 222 on the support part 221 and the base 21 is a mature technology, and will not be described in detail here.

[0059] As shown in Figure 1 The boat-shaped structure 2211 in the support part 221 is vertically arranged, one end of the boat-shaped structure 2211 is connected with the base 21, and the other end is a free end provided with the rotating shaft 222. The rotating shaft 222 is located in the groove of the boat-shaped structure 2211. In this way, the part connected with the coupler 6 of the rotating shaft 222 is protected, and the tensile strength of the coupler mounting seat 2 is higher.

[0060] In the embodiment, the outer side of the boat-shaped structure 2211 is connected to the base 21 through the reinforcing rib 2212, the reinforcing rib 2212 can adopt a triangular plate structure, and one side of the triangular plate structure is spliced and fixed with the outer side wall of the boat-shaped structure 2211, and the other side is spliced and fixed with the bottom surface of the base 21, or the reinforcing rib 2212 adopts a rod structure, one end of the rod structure is connected to the outer side wall of the boat-shaped structure 2211, and the other end is connected to the bottom surface of the base 21, and the like, so that the tensile strength of the coupler mounting seat 2 is further improved.

[0061] Further, as shown in Figure 1 the reinforcing rib 2212 adopts a right-angled triangular plate structure, and the base 21 adopts a flat plate structure, that is, the top surface of the base 21 is parallel to the bottom surface, the outer side wall of the boat-shaped structure 2211 is perpendicular to the bottom surface of the base 21, and then the two right-angled edges of the reinforcing rib 2212 are spliced and fixedly connected with the top surface of the base 21 and the outer side wall of the boat-shaped structure 2211, so that the stability of the coupler mounting seat 2 is higher.

[0062] Optionally, the coupler 6 can adopt a No. 15 coupler or a 330 type coupler.

[0063] In addition to the above vehicle body, the application also provides a railway vehicle comprising the vehicle body disclosed in the above embodiment, and the structures of other parts of the railway vehicle can refer to the prior art, which will not be described herein.

[0064] It should be noted that the relationship terms such as "first" and "second" described above are only used to distinguish one entity from other entities, and do not necessarily require or imply any actual relationship or order between the entities; the "upper surface, lower surface, top, bottom" described above and the orientation words "up, down, left, right" are defined based on the drawings.

[0065] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0066] The vehicle body and the railway vehicle provided by the application are described in detail above. The principles and implementation manners of the application are described by applying specific examples in the specification, and the above embodiment is only used to help understand the method and the core idea of the application. It should be pointed out that the ordinary skilled in the art can make some improvements and modifications to the application without departing from the principles of the application, and these improvements and modifications also fall within the protection scope of the claims of the application.

Claims

1. A vehicle body, characterized by comprising: The utility model relates to a kind of traction beam and car coupler mounting seat, traction beam includes two parallelly arranged beam structures (11) in first direction and connecting piece (12) for connecting two beam structures (11), the beam structure (11) is straight pipe structure, and the bottom surface of the beam structure (11) is plane, the bottom wall of two beam structures (11) has first mounting hole (111);Car coupler mounting seat (2) base (21) top surface is plane, for fitting the bottom surface of the traction beam (1) structure, and the base (21) has second mounting hole, the bottom of the car coupler mounting seat (2) has rotating joint (22) for connecting car coupler (6), and the length direction of the rotating joint (22) is perpendicular to the top surface of the base (21);Fixed part (3) and fastener (4), the fixed part (3) is inserted in the first mounting hole (111) and the second mounting hole, and the tail of the fixed part (3) is matched with the fastener (4), to fix the car coupler mounting seat (2);The rotating joint (22) includes support part (221) and rotating shaft (222), the support part (221) is located at the bottom of the base (21), the rotating shaft (222) is arranged in the support part (221) and the base (21), and the rotating shaft (222) is perpendicular to the top surface of the base (21);The support part (221) includes boat type structure (2211) and reinforcing rib (2212), the rotating shaft (222) is located in the recess of the boat type structure (2211), and the reinforcing rib (2212) is connected with the outer side wall of the boat type structure (2211) and the base (21);The base (21) is flat plate structure, the reinforcing rib (2212) is triangular plate structure, and one right angle side of the reinforcing rib (2212) is spliced and fixed with the outer side wall of the boat type structure (2211), and the other right angle side of the reinforcing rib (2212) is spliced and fixed with the bottom surface of the base (21). The beam structure (11) is a mouth-shaped tubular structure. The connecting piece (12) is a rectangular plate structure, and the side edge of the connecting piece (12) is spliced and fixed with the top surface of the two adjacent beam structures (11), and the connecting piece (12) is located at the top of the beam structure (11); The traction beam (1) further includes two reinforcing plates (13), each reinforcing plate (13) is located on both sides of the car coupler mounting seat (2), and the reinforcing plate (13) is located at the bottom of the beam structure (11). The head of the fixed part (3) is located in the inner cavity of the beam structure (11), and the fastener (4) is located outside the beam structure (11); And / or, the fixed part (3) is a bolt, and the fastener (4) is a nut. The opposite surfaces of the two beam structures (11) each have an operating hole (113) for an operator to install the fixed part (3).

2. The vehicle body according to claim 1, characterized by ​ 3. The vehicle body of claim 2, wherein ​ ​ 4. The vehicle body of claim 1, wherein ​ ​ 5. The vehicle body of claim 4, wherein ​ 6. The vehicle body of claim 5, wherein A stop block (5) is arranged in the inner cavity of the beam structure (11), the stop block (5) is clamped between the head of the fixing member (3) and the bottom wall of the beam structure (11), and the stop block (5) has a through hole for the fixing member (3) to pass through; And / or, the opposite sides of the two beam structures (11) have stop installation holes (112) for the stop block (5) to pass through.

7. The vehicle body of claim 6, wherein The number of the first installation holes (111) is greater than or equal to two, and each first installation hole (111) is arranged along the length direction of the corresponding beam structure (11).

8. The vehicle body of claim 7, wherein The shaft section where the operation hole (113) is located and the shaft section where the stop installation hole (112) is located are adjacent to the shaft section where the first installation hole (111) is located.

9. The vehicle body according to any one of claims 1 to 8, characterized by The car coupler (6) is a 15 type car coupler or a 330 type car coupler.

10. A rail vehicle, characterized by The car body comprises the car body according to any one of claims 1-9.

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