Trailer traction device, trailer bogie and rubber-tyred train

Abstract

The present embodiment provides a trailer traction device, a trailer bogie and a rubber-wheeled train, wherein the trailer traction device comprises two first traction assemblies and two second traction assemblies, wherein the first traction assembly connects the first axle traction rod seat and the first body traction rod seat, and the first axle traction rod seat and the first body traction rod seat are both located on both sides of the width direction of the vehicle body; the second traction assembly connects the second axle traction rod seat and the second body traction rod seat, and the second axle traction rod seat is located between the two first axle traction rod seats, and the second axle traction rod seat is tilted toward the first axle traction rod seat adjacent thereto; the second body traction rod seat is located between the two first body traction rod seats, and the second body traction rod seat is tilted away from the first body traction rod seat adjacent thereto. The present embodiment reduces the load on each traction assembly, and at the same time evenly distributes the traction force and the braking force to the entire vehicle frame and the trailer bogie, thereby avoiding stress concentration.

Description

Technical Field

[0001] The present application relates to vehicle manufacturing technology, and in particular to a trailer traction device, a trailer bogie and a rubber-wheeled train. Background Art

[0002] With the development of urban transportation construction, articulated trains (such as traditional low-floor trolleybuses, urban BRT trains, etc.) have gradually been put into use to ease road traffic pressure. An articulated train is a wheeled train consisting of two or more carriages connected together by a hinge device. The articulated train changes its direction of travel by the guidance of the hinge device between the carriages.

[0003] In an articulated train, the traction and braking forces between two adjacent carriages are transmitted by a traction device on a bogie. However, in the solutions of the related art, the traction device is prone to problems such as uneven distribution of braking forces and stress concentration. Summary of the invention

[0004] The embodiments of the present application provide a trailer traction device, a trailer bogie and a rubber-wheeled train, which are mainly used to solve the problems of uneven braking force distribution and stress concentration of the traction device in the related art.

[0005] According to a first aspect of an embodiment of the present application, a trailer traction device is provided, which is used to connect a trailer bogie and a vehicle body end wall, comprising:

[0006] Two first traction assemblies, the two ends of the first traction assembly are respectively used to connect the first axle traction rod seat located on the trailer bogie and the first body traction rod seat located on the vehicle body; wherein the first axle traction rod seat and the first body traction rod seat are arranged in a one-to-one correspondence, and the first axle traction rod seat and the first body traction rod seat are both located on both sides of the width direction of the vehicle body;

[0007] Two second traction assemblies, the two ends of the second traction assemblies are respectively used to connect the second axle traction rod seat located on the trailer bogie and the second vehicle body traction rod seat located on the vehicle body; wherein the second axle traction rod seat is located between the two first axle traction rod seats, and is located between the two second vehicle body traction rod seats in the vehicle body width direction, and the second axle traction rod seat is inclined toward the first axle traction rod seat adjacent thereto; the second vehicle body traction rod seat is located between the two first vehicle body traction rod seats, and the second vehicle body traction rod seat is inclined away from the first vehicle body traction rod seat adjacent thereto; the two second traction assemblies are inclined, and one end of the two second traction assemblies connected to the trailer bogie is located between one end of the two second traction assemblies connected to the vehicle body.

[0008] According to a second aspect of an embodiment of the present application, there is provided a trailer bogie, comprising:

[0009] A first frame, wherein a first end of the first frame is used for being hinged to a second frame; a first axle is provided at a second end of the first frame, and a trailer traction device as described above is provided on a side of the first axle facing away from the second frame;

[0010] A second frame, wherein the first end of the second frame is used for being hinged to the first frame; a second axle is provided at the second end of the second frame, and a trailer traction device as described above is provided on the side of the second axle facing away from the first frame.

[0011] According to a third aspect of the embodiments of the present application, there is provided a rubber-tyred train, comprising: two mutually connected car bodies, the two car bodies being connected by any of the above described trailer bogies;

[0012] The vehicle body comprises:

[0013] A bottom frame and a top plate are arranged opposite to each other, and a vehicle body side wall and a vehicle body end wall connecting the bottom frame and the top plate, wherein the vehicle body end wall comprises:

[0014] Two first vehicle body traction rod seats, the two first vehicle body traction rod seats are respectively located on both sides of the vehicle body in the width direction, the first vehicle body traction rod seats include a first vehicle body traction rod seat, and the first vehicle body traction rod seat is perpendicular to the plane where the vehicle body end wall is located;

[0015] Two second vehicle body traction rod seats, the two second vehicle body traction rod seats are located between the two first vehicle body traction rod seats, the second vehicle body traction rod seats include a second vehicle body traction rod seat, and the second vehicle body traction rod seat is tilted away from the first vehicle body traction rod seat adjacent thereto.

[0016] The trailer traction device, trailer bogie and rubber-wheeled train provided in the embodiment of the present application, the trailer traction device includes two first traction components and two second traction components, the two ends of the first traction component are respectively used to connect the first axle traction rod seat located on the trailer bogie and the first vehicle body traction rod seat located on the vehicle body; wherein the first axle traction rod seat and the first vehicle body traction rod seat are arranged in a one-to-one correspondence, and the first axle traction rod seat and the first vehicle body traction rod seat are both located on both sides in the width direction of the vehicle body; the two ends of the second traction component are respectively used to connect the second axle traction rod seat located on the trailer bogie and the first vehicle body traction rod seat located on the vehicle body The second vehicle body traction rod seat on the vehicle body; wherein the second vehicle axle traction rod seat is located between the two first vehicle axle traction rod seats, and is located between the two second vehicle body traction rod seats in the vehicle body width direction, and the second vehicle axle traction rod seat is tilted toward the first vehicle axle traction rod seat adjacent thereto; the second vehicle body traction rod seat is located between the two first vehicle body traction rod seats, and the second vehicle body traction rod seat is tilted away from the first vehicle body traction rod seat adjacent thereto; the two second traction assemblies are tilted, and the ends of the two second traction assemblies connected to the trailer bogie are located between the ends of the two second traction assemblies connected to the vehicle body. The trailer traction device of the embodiment of the present application transmits the traction force and braking force between the trailer bogie and the vehicle body connected thereto through the two first traction assemblies and the two second traction assemblies, thereby reducing the load on each traction assembly, and at the same time evenly distributes the traction force and braking force to the entire vehicle body frame and the trailer bogie, thereby avoiding stress concentration. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 Shown in is a simplified structural diagram of a trailer bogie provided by an embodiment of the present application;

[0019] Figure 2 : is a schematic top view of the structure of a trailer bogie provided in one embodiment of the present application (the first steering drive device and the second steering drive device are omitted in the figure);

[0020] Figure 3 : shows a simplified diagram of the connection structure between the first vehicle body and the second vehicle body provided by an embodiment of the present application;

[0021] Figure 4 yes Figure 3 Exploded view of;

[0022] Figure 5 : is a cross-sectional view of a connection structure between a slewing bearing and a first frame and a second frame provided in one embodiment of the present application;

[0023] Figure 6 FIG. 1 is a cross-sectional view of a connection structure between a slewing bearing and a first frame and a second frame provided by another embodiment of the present application;

[0024] Figure 7 is a simplified structural diagram of a slewing support cover plate provided by an embodiment of the present application in a first state;

[0025] Figure 8 is a simplified structural diagram of a slewing support cover plate provided in an embodiment of the present application in a second state;

[0026] Fig. 9 : Shown is a simplified diagram of the connection structure between the trailer bogie and the vehicle body provided by one embodiment of the present application;

[0027] Fig.10 : is a simplified structural diagram of a trailer traction device provided by an embodiment of the present application;

[0028] Fig.11 : is a schematic diagram of the main structure of a first traction rod provided in one embodiment of the present application;

[0029] Fig.12 : shows a partial structural diagram of a first traction rod provided in one embodiment of the present application;

[0030] Fig.13 : is a schematic top view of the structure of a first traction rod provided in one embodiment of the present application;

[0031] Fig.14 FIG. 1 is a simplified structural diagram of a first frame and a second frame in a first state provided by an embodiment of the present application;

[0032] Fig.15 FIG. 2 shows a simplified structural diagram of a first frame and a second frame in a second state provided by an embodiment of the present application;

[0033] Fig.16 : is a simplified structural diagram of a steering drive device provided in one embodiment of the present application;

[0034] Fig.17 Shown in is a simplified diagram of an air spring installation structure provided in one embodiment of the present application;

[0035] Fig.18 Shown in is a simplified structural diagram of an air spring provided in one embodiment of the present application;

[0036] Fig.19 : is a partial cross-sectional view of a lifting assembly provided by an embodiment of the present application;

[0037] Fig. 20: is a schematic diagram of a partial structure of a motor vehicle body provided by an embodiment of the present application;

[0038] Fig.21 : is a simplified structural diagram of a first vehicle body traction rod seat provided by an embodiment of the present application at a first viewing angle;

[0039] Fig. 22 : is a simplified structural diagram of a first vehicle body traction rod seat provided by an embodiment of the present application at a second viewing angle;

[0040] Fig.23 FIG. 2 shows an exploded view of a first vehicle body traction rod seat provided by an embodiment of the present application;

[0041] Fig.24 : is a simplified structural diagram of a second vehicle body traction rod seat provided by an embodiment of the present application at a first viewing angle;

[0042] Fig.25 : is a simplified structural diagram of a second vehicle body traction rod seat provided by an embodiment of the present application at a second viewing angle;

[0043] Fig.26 Shown in FIG. 1 is an exploded view of a second vehicle body traction rod seat provided by an embodiment of the present application.

[0044] Reference numerals:

[0045] 1151-car end outer cross beam; 11511-first mounting plate; 11512-first side plate; 11513-first baffle plate; 11514-first clamping plate; 11515-first protective plate; 11516-seat mounting interface;

[0046] 1152-inner cross beam at the vehicle end; 11521-second mounting plate; 11522-second side plate; 11523-second baffle plate; 11524-second protective plate;

[0047] 1153-first vehicle body traction rod seat; 11531-first main body; 11532-first connecting part;

[0048] 1154-second vehicle body traction rod seat; 11541-second main body; 11542-second connecting portion;

[0049] 4-trailer bogie;

[0050] 41-first frame; 411-first frame hinge portion; 412-first frame connection portion; 413-first buffer seat mounting arm;

[0051] 42-first axle; 4201-first trailer wheel;

[0052] 43-second frame; 431-second frame hinge portion, 432-second frame connection portion; 433-second buffer seat mounting arm;

[0053] 44-second axle; 441-first axle traction rod seat; 442-second axle traction rod seat; 4401-second trailer wheel;

[0054] 45-slewing support device; 451-slewing bearing; 4511-first swivel; 4512-second swivel; 452-slewing support cover plate; 4521-through channel limiting boss; 4522-removal threaded hole; 4523-elastic pin mounting hole; 4524-cover plate fastener mounting hole; 453-waterproof pad; 454-elastic pin; 455-sealing plug; 456-cover plate fastener;

[0055] 46-trailer towing device;

[0056] 461-first traction assembly; 4611-first traction rod; 4612-first traction rod node; 4613-height valve stem mounting seat; 462-second traction assembly; 4621-second traction rod; 4622-second traction rod node;

[0057] 47-frame buffer device; 471-first buffer block mounting seat; 472-first buffer block; 473-second buffer block mounting seat; 474-second buffer block;

[0058] 481-first steering drive device; 4811-first servo motor; 4812-first power steering gear; 4813-first coupling; 4814-first power steering swing arm; 4815-first longitudinal tie rod; 4816-first trailer steering swing arm; 48161-first trailer sub-swing arm; 48162-second trailer sub-swing arm; 4817-first transverse tie rod; 4818-first mounting seat; 4819-first limit switch;

[0059] 482-second steering drive device; 4821-second servo motor; 4822-second power steering gear; 4823-second coupling; 4824-second power steering swing arm; 4825-second longitudinal tie rod; 4826-second trailer steering swing arm; 48261-third trailer sub-swing arm; 48262-fourth trailer sub-swing arm; 4827-second transverse tie rod; 4828-second mounting seat; 4829-second limit switch;

[0060] 49-air spring; 491-spring upper cover; 492-air bag; 493-limit stop cover; 4931-stop cover body; 4932-stop cover limit plate; 4933-stop cover mounting edge; 494-limit stop member; 4941-limit stop block; 4942-limit stop connecting rod; 495-flat rubber pile; 496-limit stop mounting plate; 497-spring lower cover. DETAILED DESCRIPTION

[0061] In order to make the technical solutions and advantages in the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than an exhaustive list of all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0062] Embodiment 1

[0063] Figure 1 The structure diagram of the trailer bogie provided by one embodiment of the present application is shown in FIG. Figure 1 . This embodiment provides a trailer bogie 4, which is installed under two adjacent first and second car bodies, and is used not only to carry the first and second car bodies, but also to transmit traction between the first and second car bodies. The first car body can be a motor vehicle body, and the corresponding second car body can be an intermediate car body; or the first car body can be an intermediate car body, and the corresponding second car body can be a motor vehicle body; or both the first car body and the second car body are intermediate car bodies.

[0064] Specifically, the trailer bogie 4 includes a first frame body 41 and a second frame body 43; wherein the first frame body 41 is used to connect the first vehicle body, and the second frame body 43 is used to connect the second vehicle body.

[0065] The first end of the first frame 41 is used to be hinged with the second frame 43; the second end of the first frame 41 is provided with a first axle 42, the extension direction of the first axle 42 is perpendicular to the extension direction of the first frame 41, and the two ends of the first axle 42 are connected to the first trailer wheels 4201.

[0066] The first end of the second frame 43 is used to be hinged with the first frame 41; the second end of the second frame 43 is provided with a second axle 44, the extension direction of the second axle 44 is perpendicular to the extension direction of the second frame 43, and the two ends of the second axle 44 are connected to the second trailer wheels 4401.

[0067] The hinged connection structure between the first frame 41 and the second frame 43 can be set as needed. For example, the first end of the first frame 41 and the first end of the second frame 43 can be hinged by an axle pin, and both can rotate relative to the pin. In this way, when the first frame 41 or the second frame 43 rotates, due to the existence of the hinged connection relationship, the corresponding second frame 43 or the first frame 41 can follow the rotation to a certain extent.

[0068] Compared with the multi-carriage vehicles in the related art that use car body connections, the car end part in the related art requires a stronger structural design and squeezes the space for the axle to be arranged toward the car end, resulting in the axle having to be arranged in the middle of the car, thereby occupying the passenger-usable space in the end area of ​​the car; the trailer bogie provided in the embodiment of the present application includes a rotatable first frame body 41 and a second frame body 43; the distance between the first axle 42 and the second axle 44 can be shortened so that the first axle 42 and the second axle 44 can be close to the edge of the car end, and the car end no longer needs to be designed to adapt to strong force structures such as traction and braking force, thereby reducing the difficulty of car end design and realizing a low floor layout.

[0069] Figure 2 : is a schematic top view of the structure of a trailer bogie provided in one embodiment of the present application (the first steering drive device and the second steering drive device are omitted in the figure); Figure 3 : shows a simplified diagram of the connection structure between the first vehicle body and the second vehicle body provided by an embodiment of the present application; Figure 4 yes Figure 3 Exploded view of; Figure 5 : is a cross-sectional view of a connection structure between a slewing bearing and a first frame and a second frame provided in one embodiment of the present application; Figure 6 FIG. 1 is a cross-sectional view of a connection structure between a slewing bearing and a first frame and a second frame provided in another embodiment of the present application; please refer to FIG. Figure 2-Figure 6 .

[0070] Furthermore, in this embodiment, the first end of the first frame 41 and the first end of the second frame 43 are hingedly connected via a swivel support device 45 .

[0071] The slewing support device 45 includes a slewing bearing 451, and the slewing bearing 451 includes a first swivel body 4511 and a second swivel body 4512 that rotatably cooperate with each other, and the rotation axes of the two are perpendicular to the ground; wherein the first swivel body 4511 can be connected to the first frame 41, and the second swivel body 4512 can be connected to the second frame 43, that is, the first frame 41 and the second frame 43 are rotatably connected through the above-mentioned slewing bearing 451.

[0072] Specifically, the first frame 41 is fixedly connected to the first swivel 4511 by fasteners, and a first step hole is provided at the first end of the first frame 41, and the first step hole includes a first aperture section and a second aperture section, and the aperture of the first aperture section is larger than the aperture of the second aperture section to form a first step surface at the transition connection between the first aperture section and the second aperture section, and the first aperture section can be arranged close to the first swivel 4511 so that the first swivel 4511 is installed below the first step surface.

[0073] Similarly, the second frame 43 is fixedly connected to the second swivel 4512 by fasteners, and a second step hole is provided at the first end of the second frame 43, and the second step hole includes a third aperture section and a fourth aperture section, and the aperture of the third aperture section is larger than the aperture of the fourth aperture section to form a second step surface at the transition connection between the third aperture section and the fourth aperture section; the third aperture section can be arranged close to the second swivel 4512 so that the second swivel 4512 is fixed above the second step surface.

[0074] like Figure 5 As shown, in a possible implementation manner, in this embodiment, the first rotating body 4511 and the second rotating body 4512 are arranged upper and lower, and the rotation axis of the first rotating body 4511 and the second rotating body 4512 is perpendicular to the ground, or perpendicular to the first step surface and the second step surface; the first rotating body 4511 includes a first mounting surface and a bowl-shaped spherical structure protruding from the first mounting surface, the upper bottom surface of the bowl-shaped spherical structure is fixed on the first mounting surface, and the lower bottom surface of the bowl-shaped spherical structure faces the second rotating body 4512; the second rotating body 4512 includes a second mounting surface and a second spherical hole, the second spherical hole cooperates with the bowl-shaped spherical structure, and the second spherical hole faces the first rotating body 4511.

[0075] The second mounting surface of the second swivel 4512 fits with the second step surface, the second mounting surface and the second step surface are connected by bolts, and the second swivel 4512 is embedded in the second frame 43; the first mounting surface of the first swivel 4511 fits with the first step surface, the first mounting surface and the first step surface are connected by bolts, a part of the bowl-shaped spherical structure is inserted into the second spherical hole, the side surface of the bowl-shaped spherical structure fits with the hole wall of the second spherical hole, and there is a certain gap between the first frame 41 and the second frame 43 in the vertical direction, so that the bowl-shaped spherical structure can be laterally offset in the second spherical hole; that is, the first swivel 4511 and the second swivel 4512 can not only rotate around the axis of rotation, but also deflect laterally.

[0076] like Figure 6As shown, in another possible embodiment, the first swivel 4511 and the second swivel 4512 are arranged up and down, the first swivel 4511 has a first mounting surface, the first mounting surface is fitted and fixed to the first step surface; the second swivel 4512 has a second mounting surface, the second mounting surface is fitted and fixed to the second step surface; wherein the second swivel 4512 is provided with a bowl-shaped spherical structure, the first swivel 4511 is provided with a first spherical hole matching the bowl-shaped spherical structure, and the side surface of the bowl-shaped spherical structure is fitted with the side wall of the first spherical hole, and there is a certain gap between the first frame 41 and the second frame 43 in the vertical direction, so that the bowl-shaped spherical structure can be laterally offset in the first spherical hole, that is, the first swivel 4511 and the second swivel 4512 can not only rotate around the rotation axis, but also deflect laterally.

[0077] In this embodiment, the first rotating body 4511 and the second rotating body 4512 are arranged upper and lower, and the rotation axis of the first rotating body 4511 and the second rotating body 4512 is perpendicular to the ground, or perpendicular to the first step surface and the second step surface; the second mounting surface of the second rotating body 4512 is in contact with the second step surface, the second mounting surface and the second step surface are connected by bolts, and the second rotating body 4512 is embedded in the second frame 43; the first mounting surface of the first rotating body 4511 is in contact with the first step surface, the first mounting surface and the first step surface are connected by bolts, and there is a certain floating gap between the first frame 41 and the second frame 43, so that during the rotation of the first rotating body 4511 and the second rotating body 4512 around the rotation axis, there is a certain lateral deflection ability, which can improve the vehicle's curve passability and adaptability.

[0078] Figure 7 is a simplified structural diagram of a slewing support cover plate provided by an embodiment of the present application in a first state; Figure 8 This is a schematic diagram of the structure of the rotary support cover plate in the second state provided by an embodiment of the present application; please refer to Figure 5-Figure 8 .

[0079] In this embodiment, a swivel support cover plate 452 is further provided above the first frame 41, and the swivel support cover plate 452 is used to seal the first step hole of the first frame 41; the swivel support cover plate 452 may be a circular plate, and the swivel support cover plate 452 is provided at the first end of the first frame 41, and the swivel support cover plate 452 is fitted and fixed on the surface of the first frame 41, and is used to seal the first step hole. For example, the swivel support cover plate 452 is provided at the first step hole and is fixed on the first frame 41. Such a configuration can prevent dust, debris, rainwater, etc. from entering the swivel support, and can improve the reliability of the swivel support device 45.

[0080] Two through-channel limiting bosses 4521 are arranged on the side of the swivel support cover plate 452 away from the first frame body 41. The two through-channel limiting bosses 4521 are arranged at intervals on the swivel support cover plate 452 and protrude from the surface of the swivel support cover plate 452 so that the two form a limiting space for the through-channel; a through-channel limiting block is arranged on the bottom surface of the through-channel facing the swivel support cover plate 452, and the through-channel limiting block can be embedded in the above-mentioned limiting space.

[0081] The through-channel limiting block can be limited between two through-channel limiting bosses 4521 , and the through-channel limiting bosses 4521 can limit the deformation amount and rotation angle of the through-channel.

[0082] For example, two through-channel limiting bosses 4521 may be provided in the central area of ​​the slewing support cover plate 452 and symmetrically distributed on the slewing support cover plate 452. The slewing support cover plate 452 may be a circular slewing support cover plate 452, and the two through-channel limiting bosses 4521 are symmetrically arranged along the center of the slewing support cover plate 452, and there is a certain distance between the two through-channel limiting bosses 4521, and the distance forms an insertion space for the through-channel limiting block; along the length direction of the bogie, the two through-channel limiting bosses 4521 are respectively located on the left and right sides of the through-channel limiting block, which can limit the deformation amount and rotation angle of the through-channel to prevent the deformation amount and rotation angle of the through-channel from being too large.

[0083] Please continue to refer to Figure 6 On the basis of the above-mentioned implementation mode, an annular waterproof pad 453 is further provided between the slewing support cover plate 452 and the first frame 41, which can prevent external water from entering the slewing bearing 451, avoid corrosion of the slewing bearing 451 caused by water entering, and improve the rotation reliability of the first frame 41 and the second frame 43.

[0084] Specifically, a sink is provided on the side of the swivel support cover plate 452 facing the first frame body 41 to form an installation space for the waterproof pad 453. The waterproof pad 453 is arranged around the second step hole. One side of the waterproof pad 453 abuts against the swivel support cover plate 452, and the other side abuts against the first frame body 41. The free thickness of the waterproof pad 453 is greater than the depth of the sink. The waterproof pad 453 is in a compressed state after installation. By compressing the waterproof pad 453, the waterproof effect between the swivel support cover plate 452 and the first frame body 41 can be improved.

[0085] Further, the slewing support cover plate 452 is fixed to the first frame body 41 by a plurality of cover plate fasteners 456. For example, a plurality of cover plate fasteners 456 are arranged at equal intervals along the circumference of the slewing support cover plate 452, and the first frame body 41 is provided with a cover plate fastener mounting hole 4524 that cooperates with the cover plate fastener 456; the cover plate fastener 456 may be a fastening bolt, and the cover plate fastener mounting hole 4524 provided in the first frame body 41 may be a threaded hole, and one end of the cover plate fastener 456 passes through the gasket and the slewing support cover plate 452 and is fixed to the first frame body 41, thereby fixing the slewing support cover plate 452 to the first frame body 41.

[0086] On the basis of the above embodiment, the cover fastener 456 and the waterproof pad 453 can be arranged relative to each other to enhance the waterproof effect between the first frame 41 and the swivel support cover 452; for example, the waterproof pad 453 and the cover fastener 456 are arranged relative to each other, and the waterproof pad 453 is provided with a through hole for the cover fastener 456 to pass through, that is, one end of the cover fastener 456 passes through the swivel support cover 452 and the waterproof pad 453 and is fixed on the first frame 41, thereby enhancing the waterproof effect between the swivel support cover 452 and the first frame 41.

[0087] Please continue to refer to Figure 4 When the swivel support cover plate 452 is subjected to the impact force from the through-channel, in order to prevent the cover plate fastener 456 from being broken by the impact force, in this embodiment, an elastic pin 454 is further provided between the swivel support cover plate 452 and the first frame body 41, and the elastic pin 454 is used to resist the impact force from the through-channel on the swivel support cover plate 452. Specifically, two elastic pins 454 are provided between the swivel support cover plate 452 and the first frame body 41, and the two elastic pins 454 are respectively located on the outer sides of the two through-channel limiting bosses 4521 away from the through-channel, and the elastic pins 454 are arranged opposite to the through-channel limiting bosses 4521. For example, the swivel support cover plate 452 is provided with two elastic pin mounting holes 4523, the two through-channel limiting bosses 4521 are located between the two elastic pin mounting holes 4523, the elastic pin 454 is inserted into the elastic pin mounting hole 4523, and fixed on the first frame 41; the impact force received by the through-channel limiting boss 4521 can be transmitted to the elastic pin 454 along a straight line, thereby improving the offsetting effect of the impact force.

[0088] Furthermore, the elastic pin 454 can be arranged opposite to the waterproof pad 453, the waterproof pad 453 is provided with a through hole for the elastic pin 454 to pass through, and one end of the elastic pin 454 passes through the swivel support cover plate 452 and the waterproof pad 453 and is inserted into the first frame 41. Such an arrangement can enhance the waterproof effect of the waterproof pad 453 on the swivel support cover plate 452 and the first frame 41.

[0089] Please continue to refer to Figure 6On the basis of the above-mentioned implementation mode, in this embodiment, a withdrawal threaded hole 4522 and a sealing plug 455 for sealing the withdrawal threaded hole 4522 are further provided on the slewing support cover plate 452, and the withdrawal threaded hole 4522 penetrates the slewing support cover plate 452. When the slewing support cover plate 452 needs to be disassembled, the sealing plug 455 is removed from the withdrawal threaded hole 4522 to make one end of the withdrawal threaded hole 4522 open, and then the tool bolt is suspended into the withdrawal threaded hole 4522, and the end of the tool bolt abuts against the first frame body 41, and an external force is applied to the tool bolt so as to separate the slewing support cover plate 452 from the first frame body 41; correspondingly, when the slewing support cover plate 452 does not need to be disassembled, the sealing plug 455 is installed in the withdrawal threaded hole 4522 and seals the withdrawal threaded hole 4522.

[0090] Fig. 9 : Shown is a simplified diagram of the connection structure between the trailer bogie and the vehicle body provided by one embodiment of the present application; Fig.10 The structure diagram of the trailer traction device provided by one embodiment of the present application is shown in FIG. Figure 9-10 . Further, the trailer bogie 4 of the present embodiment further includes a trailer traction device 46, which is arranged on the side of the first axle 42 away from the first frame 41 and on the side of the second axle 44 away from the second frame 43. The trailer traction device 46 is used to connect the trailer bogie 4 and the adjacent first car body or second car body to transmit traction or braking force between the trailer bogie 4 and the car body and to accommodate the directional relative movement between the adjacent first car bodies or second car bodies. In the present embodiment, the connection structure between the trailer traction device 46 and the motor vehicle body is taken as an example for explanation, and the connection structure between the other side and the intermediate car body is not shown in the figure.

[0091] For details, please continue to refer to Fig. 9 and Fig.10 The trailer traction device 46 of this embodiment includes two first traction components 461 and two second traction components 462.

[0092] The two ends of the first traction assembly 461 are respectively used to connect the first axle traction rod seat 441 located on the trailer bogie 4 and the first body traction rod seat 1153 located on the vehicle body. The first axle traction rod seat 441 and the first body traction rod seat 1153 are arranged in a one-to-one correspondence, and the first axle traction rod seat 441 and the first body traction rod seat 1153 are both located on both sides of the width direction of the vehicle body. The two ends of the first traction assembly 461 can be vertically connected to the first axle traction rod seat 441 and the first body traction rod seat 1153, and after the connection, the two first traction assemblies 461 are parallel to each other and consistent with the length direction of the vehicle body.

[0093] The two ends of the second traction assembly 462 are respectively used to connect the second axle traction rod seat 442 located on the trailer bogie 4 and the second body traction rod seat 1154 located on the vehicle body. The second axle traction rod seat 442 is located between the two first axle traction rod seats 441 and between the two second body traction rod seats 1154 in the vehicle body width direction. The second axle traction rod seat 442 is tilted toward the first axle traction rod seat 441 adjacent thereto. The second body traction rod seat 1154 is located between the two first body traction rod seats 1153 and is tilted away from the first body traction rod seat 1153 adjacent thereto. The two second traction assemblies 462 are tilted, and one end of the two second traction assemblies 462 connected to the trailer bogie 4 is located between one end of the two second traction assemblies 462 connected to the vehicle body, so that the two second traction assemblies 462 are generally in an "eight" shape after connection.

[0094] Through the above-mentioned arrangement, the two first traction assemblies 461 and the two second traction assemblies 462 jointly transmit the traction force and braking force between the trailer bogie 4 and the car body connected thereto, thereby reducing the load on each traction assembly and at the same time evenly distributing the traction force and braking force to the entire car body frame and the trailer bogie 4, thereby avoiding stress concentration.

[0095] At the same time, this embodiment can make the height of the two first traction assemblies 461 consistent with the center height of the wheel, so as to reduce the loss during the transmission of traction and braking force, and also reduce the wheel weight reduction rate; the two second traction assemblies 462 can ensure the smooth transmission of traction and braking force when the vehicle passes through a small curve, thereby improving the transmission efficiency.

[0096] Optionally, the two ends of the first traction assembly 461 of this embodiment are respectively vertically connected to the trailer bogie 4 and the car body connected thereto to ensure the transmission efficiency of traction and braking force. The angle between the two ends of the second traction assembly 462 and the trailer bogie 4 and the car body is 30°-40°, within which the second traction assembly 462 can maintain a high transmission efficiency.

[0097] Optionally, please continue to refer to Fig.10The first traction assembly 461 of this embodiment includes a first traction rod 4611 and two first traction rod nodes 4612. Both ends of the first traction rod 4611 are provided with first traction rod through holes. The axial direction of the first traction rod through hole is perpendicular to the axial direction of the first traction rod 4611. The first traction rod node 4612 is fixedly connected in the first traction rod through hole, that is, one end of the first traction rod node 4612 passes through the first traction rod through hole and the middle part thereof is fixed to the first traction rod through hole. The first traction rod node 4612 is located on both sides of the first traction rod through hole and is used to connect the first axle traction rod seat 441 or the first vehicle body traction rod seat 1153. The specific connection method can be bolt connection, hinge connection, etc.

[0098] The second traction assembly 462 includes a second traction rod 4621 and two second traction rod nodes 4622. Both ends of the second traction rod 4621 are provided with second traction rod through holes. The axial direction of the second traction rod through hole is perpendicular to the axial direction of the second traction rod 4621. The second traction rod node 4622 is fixedly connected in the second traction rod through hole, that is, one end of the second traction rod node 4622 passes through the second traction rod through hole and the middle part thereof is fixed to the second traction rod through hole. The second traction rod node 4622 is located on both sides of the second traction rod through hole and is used to connect the second axle traction rod seat 442 or the second vehicle body traction rod seat 1154. The specific connection method can be bolt connection, hinge connection, etc.

[0099] Preferably, please continue to refer to Fig. 9 and Fig.10 In this embodiment, both sides of the first traction rod node 4612 located at the first traction rod through hole are provided with first connection holes for connecting the first axle traction rod seat 441 or the first vehicle body traction rod seat 1153, and the first fastener is fixed to the first axle traction rod seat 441 or the first vehicle body traction rod seat 1153 after passing through the first connection hole. The first connection hole can be a through hole, and the first fastener can be a bolt. The first axle traction rod seat 441 and the first vehicle body traction rod seat 1153 are both provided with threaded fixing holes adapted to the first fastener, and the first fastener can be fixed in the threaded fixing holes after passing through the first connection hole.

[0100] The second traction rod node 4622 is located on both sides of the second traction rod through hole, and a second connection hole for connecting the second axle traction rod seat 442 or the second vehicle body traction rod seat 1154 is provided. The second fastener passes through the second connection hole and is fixed to the second axle traction rod seat 442 or the second vehicle body traction rod seat 1154. The second connection hole can be a through hole, and the second fastener can be a bolt. The second axle traction rod seat 442 and the second vehicle body traction rod seat 1154 are both provided with a threaded fixing hole adapted to the second fastener, and the second fastener can pass through the first connection hole and be fixed in the threaded fixing hole.

[0101] In this embodiment, the bolt connection method can facilitate the installation and disassembly of the traction component, thereby facilitating subsequent inspection and maintenance.

[0102] For further information, please refer to Fig.10 The first traction assembly 461 of this embodiment also includes a height valve stem mounting seat 4613, and the height valve stem mounting seat 4613 is used to install the height valve stem to realize the adjustment function of the air spring in a limited space.

[0103] The height valve stem mounting seat 4613 is located on the side of the first traction rod 4611 facing the trailer bogie 4, and the height valve stem mounting seat 4613 is fixedly connected to the side of the first traction rod node 4612 facing the second traction assembly 462.

[0104] Specifically, the height valve stem mounting seat 4613 of this embodiment includes a first flat plate and a second flat plate which are perpendicular to each other, the first flat plate is provided with a first fixing hole adapted to the first connecting hole, and the second flat plate is used to mount the height valve stem. The first flat plate and the second flat plate can be formed by bending the same steel plate, and a rib plate can be welded between the two to increase the connection strength.

[0105] Fig.11 : is a schematic diagram of the main structure of a first traction rod provided in one embodiment of the present application; Fig.12 FIG. 1 is a partial structural diagram of a first traction rod provided in an embodiment of the present application; please refer to FIG. Figure 11-Figure 12 . Optionally, the first traction rod through hole and the second traction rod through hole in this embodiment are both oblong structures to increase the strength of the traction rod node and the connection between the traction rods. Taking the first traction rod 4611 as an example, the radius corresponding to the first traction rod through hole is R1, and the oblong structure means that the end of the first traction rod 4611 covering the first traction rod through hole is composed of two semicircular structures with a radius of R2 and a horizontal part with a length of L connecting the two semicircular structures, wherein the center of the circle corresponding to the semicircular structure is at a distance of L / 2 from the center of the circle of the first traction rod through hole.

[0106] Fig.13 FIG. 1 is a schematic top view of the structure of the first traction rod provided in one embodiment of the present application; please refer to Fig.13 Furthermore, in this embodiment, both ends of the first traction rod 4611 and the second traction rod 4621 are provided with chamfers to avoid interference with the vehicle body or the trailer bogie 4 during operation.

[0107] Preferably, in this embodiment, the first traction rod 4611 is a metal rod, the first traction rod node 4612 includes a metal part and a rubber part, and the metal part and the rubber part are vulcanized integrally; the second traction rod 4621 is a metal rod, the second traction rod node 4622 includes a metal part and a rubber part, and the metal part and the rubber part are vulcanized integrally.

[0108] The traction rods of this embodiment are all forged and machined from alloy steel materials, with high strength and good toughness; the traction rod nodes are formed by vulcanization of metal and rubber, which can buffer the impact during traction and braking, adapt to the relative movement between the car body and the trailer bogie 4, and at the same time alleviate the impact during traction and braking, optimizing the stress conditions of the car body and the trailer bogie 4.

[0109] Fig.14 FIG. 1 is a simplified structural diagram of a first frame and a second frame in a first state provided by an embodiment of the present application; Fig.15 FIG. 1 is a simplified structural diagram of the first frame and the second frame in the second state provided by an embodiment of the present application; please refer to Figure 14-15 . Furthermore, when the trailer bogie passes through a curve, in order to adapt well to the curve radius, there should be a certain angle between different frames in the curve section. The trailer bogie provided in this embodiment also includes a frame buffer device 47; along the direction from the first axle 42 to the second axle 44, two frame buffer devices 47 are symmetrically provided at the first end of the first frame 41, and two frame buffer devices 47 are symmetrically provided at the first end of the second frame 43. For the convenience of describing this embodiment, the frame buffer device 47 provided on the first frame 41 can be defined as a first frame buffer device, and the frame buffer device 47 provided on the second frame 43 can be defined as a second frame buffer device.

[0110] Among them, the first frame buffer device is arranged in cooperation with the second frame buffer device, and when the first frame 41 and the second frame 43 rotate to a certain angle, the first frame buffer device and the second frame buffer device can abut against each other. Furthermore, the first frame buffer device and the second frame buffer device located on the same side can be located on the same rotation path. When the first frame 41 and the second frame 43 rotate relative to each other, the gap between the first frame buffer device and the second frame buffer device gradually decreases until the first frame buffer device and the second frame buffer device contact each other, and provide a buffering force to the first frame 41 and the second frame 43 to avoid rigid contact between the first frame 41 and the second frame 43; continue to squeeze, the first frame buffer device and the second frame buffer device no longer undergo elastic deformation, and the first frame 41 and the second frame 43 can be limited to achieve the purpose of rigid limitation, thereby limiting the rotation angle between the first frame 41 and the second frame 43.

[0111] Please continue to refer to Fig.14In a possible implementation, the first frame buffer device includes a first buffer block 472 and a first buffer block mounting seat 471, the first buffer block mounting seat 471 is used to mount the first buffer block 472, and the first buffer block mounting seat 471 is mounted on the first frame 41 through the first buffer seat mounting arm 413. It can be understood that the first frame buffer device is a component in which a buffer block made of rubber and a metal mounting seat are combined through a certain process, and the metal mounting seat is used to be fixedly connected to the first buffer seat mounting arm 413, and the rubber buffer block is suspended and used as a buffer.

[0112] Among them, the first buffer seat mounting arm 413 can be an arc-shaped barrier arm, and its bending and extending direction is consistent with the rotation direction of the first frame 41. One end of the first buffer seat mounting arm 413 is fixedly connected to the first frame 41, and the other end of the first buffer seat mounting arm 413 is fixed with a first buffer block mounting seat 471; similarly, the second frame buffer device includes a second buffer block 474 and a second buffer block mounting seat 473, and the second frame buffer device is installed on the second frame 43 through the second buffer seat mounting arm 433. The structure of the second buffer seat mounting arm 433 can refer to the structural setting of the first buffer seat mounting arm 413, and will not be repeated here.

[0113] Please continue to refer to Fig.15 Preferably, when the first frame buffer device is in contact with the second frame buffer device, the first buffer block 472 and the second buffer block 474 may be in frontal contact, and the first buffer block 472 is directly opposite to the second rubber, so as to provide maximum buffering force for the first frame buffer device and the second frame buffer device, and reduce the vibration and noise caused by the impact during the rotation of the first frame 41 and the second frame 43.

[0114] On the basis of the above-mentioned embodiment, in order to facilitate the installation of the bracket between the first axle 42 and the second axle 44, the first frame 41 and the second frame 43 provided in this embodiment are respectively split structures, and the first frame 41 includes a first frame connecting portion 412 connected to the first axle 42, and a first frame hinge portion 411 connected to the first frame connecting portion 412; the first frame connecting portion 412 is fixedly connected to the first axle 42, or the first frame connecting portion 412 and the first axle 42 can be made into an integral structure.

[0115] One end of the first frame hinge 411 is fixedly connected to the first frame connection part 412 by bolts, and the other end of the first frame hinge 411 is connected to the first rotating body 4511 of the slewing bearing 451. First buffer seat mounting arms 413 are also provided on both sides of the first frame hinge 411, and the first buffer seat mounting arms 413 can form an integral structure with the first frame hinge 411 to enhance the connection strength between the first buffer seat mounting arms 413 and the first frame hinge 411.

[0116] Similarly, the second frame 43 includes a second frame connecting portion 432 connected to the second axle 44, and a second frame hinge portion 431 connected to the second frame connecting portion 432. The second frame connecting portion 432 is fixedly connected to the second axle 44, or the second frame connecting portion 432 and the second axle 44 can be made into an integral structure; one end of the second frame connecting portion 432 is fixedly connected to the second frame hinge portion 431 by bolts, and the other end of the second frame hinge portion 431 is connected to the second swivel 4512 of the slewing bearing 451. Second buffer seat mounting arms 433 are also provided on both sides of the second frame hinge portion 431, and the second buffer seat mounting arms 433 can form an integral structure with the second frame hinge portion 431 to enhance the connection strength between the second buffer block mounting seat 473 and the second frame hinge portion 431.

[0117] Please continue to refer to Fig.14 and Fig.15 In order to increase the rotation angle of the first frame 41 and the second frame 43, the first frame 41 and the second frame 43 are generally triangular or trapezoidal in structure, and the second end of the first frame 41 is connected to the first axle 42, and the first end is connected to the slewing bearing 451, the second end of the second frame 43 is connected to the second axle 44, and the first end of the second frame 43 is connected to the slewing bearing 451, so that a larger rotation space is formed by one end of the first frame 41 and the second frame 43 close to the slewing bearing 451, thereby meeting the rotation angle requirements of the first frame 41 and the second frame 43.

[0118] Please continue to refer to Figure 2 , Fig.14 and Fig.15 On the basis of the above-mentioned embodiment, a hollow structure is further provided on the first frame 41 and the second frame 43 to reduce the weight of the first frame 41 and the second frame 43. Specifically, the first frame connection part 412 and the first frame hinge part 411 of the first frame 41 are respectively provided with hollow structures; for example, the first frame connection part 412 can be provided with a first hollow structure, and the first hollow structure includes two trapezoidal holes or square holes symmetrically arranged on the first frame connection part 412; wherein, the number of trapezoidal or square holes in the hollow structure is related to the arrangement of the connecting bolts, and the evenly arranged trapezoidal holes and square holes are conducive to the uniform transmission of force; the size of the hollow space fully considers the bolt installation and its tightening operation space. The embodiment of the present application adopts trapezoidal and square as the hollow structure to fully consider the changes in the size of the two ends of the connection, which plays a gradual transition and avoids stress concentration.

[0119] The first frame hinge part 411 may be provided with a second hollow structure, which includes a plurality of elongated holes, and the plurality of elongated holes may be symmetrically arranged on the first frame hinge part 411; the extension direction of the elongated holes is parallel to the extension direction of the first frame hinge part 411. With such an arrangement, the elongated holes are consistent with the arrangement direction of the bolts, and are consistent with the longitudinal force direction of greater traction force, braking force, etc., which is beneficial to the force on the bolts.

[0120] Furthermore, the second frame connecting portion 432 and the second frame hinge portion 431 of the second frame 43 are provided with a hollow structure; for example, the second frame connecting portion 432 may be provided with a third hollow structure, and the third hollow structure may be provided with reference to the first hollow structure; the second frame hinge portion 431 may be provided with a fourth hollow structure, and the fourth hollow structure may be provided with reference to the second hollow structure, which will not be repeated here.

[0121] Fig.16 The structure diagram of the steering drive device provided in one embodiment of the present application is shown in FIG. Figure 1 and Fig.16 . Further, in order to realize the steering control of the trailer bogie 4, the trailer bogie of this embodiment also includes a steering drive device. The steering drive device includes a first steering drive device 481 connected to the first frame body 41 and a second steering drive device 482 connected to the second frame body 43. The first steering drive device 481 is connected to the first trailer wheel 4201 to drive the first trailer wheel 4201 to steer; the second steering drive device 482 is connected to the second trailer wheel 4401 to drive the second trailer wheel 4401 to steer.

[0122] The first frame 41 and the second frame 43 of the trailer bogie 4 of this embodiment are hingedly connected, and the rotation of the first trailer wheel 4201 is controlled by the first steering drive device 481, and the rotation of the second trailer wheel 4401 is controlled by the second steering drive device 482, so that the steering of the first body connected to the first frame 41 and the second body connected to the second frame 43 can be controlled relatively independently, which is beneficial to reducing the turning radius of the vehicle, facilitating the driving of the vehicle, and improving the flexibility when driving on urban roads.

[0123] Specifically, the first steering drive device 481 of this embodiment includes a first drive unit and a first transmission unit, the first drive unit is used to provide steering power; the first transmission unit connects the first drive unit and the first trailer wheel 4201, and the first transmission unit is used to transmit the steering power provided by the first drive unit to the first trailer wheel 4201.

[0124] The second steering drive device 482 includes a second drive unit and a second transmission unit, the second drive unit is used to provide steering power; the second transmission unit connects the second drive unit and the second trailer wheel 4401, and the second transmission unit is used to transmit the steering power provided by the second drive unit to the second trailer wheel 4401.

[0125] Please continue to refer to Fig.16 Further, the first driving unit includes a first servo motor 4811 and a first power steering gear 4812; the first servo motor 4811 is communicatively connected to the controller, and the first servo motor 4811 is used to output steering force; the first power steering gear 4812 is used to change the direction of the steering force output by the first servo motor 4811 to provide steering power to the first transmission unit, and the first power steering gear 4812 is connected to the output end of the first servo motor 4811 through a first coupling 4813, and the output end of the first power steering gear 4812 is connected to the first transmission unit.

[0126] The second driving unit includes a second servo motor 4821 and a second power steering gear 4822. The second servo motor 4821 is communicatively connected to the controller and is used to output steering force. The second power steering gear 4822 is used to change the direction of the steering force output by the second servo motor 4821 to provide steering power to the second transmission unit. The second power steering gear 4822 is connected to the output end of the second servo motor 4821 through a second coupling shaft 4823, and the output end of the second power steering gear 4822 is connected to the second transmission unit.

[0127] In a possible implementation manner, the first transmission part of this embodiment includes a first power steering swing arm 4814, a first longitudinal tie rod 4815, a first trailer steering swing arm 4816 and a first transverse tie rod 4817, wherein the first end of the first power steering swing arm 4814 is connected to the output end of the first power steering device 4812; the first end of the first longitudinal tie rod 4815 is connected to the second end of the first power steering swing arm 4814; the first trailer steering swing arm 4816 is fixedly connected to the first trailer wheel 4201, and the first trailer steering swing arm 4816 includes a first body and a first body connected to the first body. The first body is fixedly connected to the first trailer wheel 4201, the first trailer sub-swing arm 48161 and the second trailer sub-swing arm 48162 are both connected to the first body and an angle is formed between the first trailer sub-swing arm 48161 and the second trailer sub-swing arm 48162, the second end of the first longitudinal tie rod 4815 is connected to the first trailer sub-swing arm 48161; the two ends of the first transverse tie rod 4817 are respectively connected to the second trailer sub-swing arms 48162 on the two first trailer steering swing arms 4816.

[0128] The second transmission part of this embodiment includes a second power steering swing arm 4824, a second longitudinal tie rod 4825, a second trailer steering swing arm 4826 and a second transverse tie rod 4827. The first end of the second power steering swing arm 4824 is connected to the output end of the second power steering device 4822; the first end of the second longitudinal tie rod 4825 is connected to the second end of the second power steering swing arm 4824; the second trailer steering swing arm 4826 is fixedly connected to the second trailer wheel 4401, and the second trailer steering swing arm 4826 includes a second body and a third trailer wheel connected to the second body. The second body is fixedly connected to the second trailer wheel 4401, the third trailer sub-swing arm 48261 and the fourth trailer sub-swing arm 48262 are both connected to the second body and an angle is formed between the third trailer sub-swing arm 48261 and the fourth trailer sub-swing arm 48262, the second end of the second longitudinal tie rod 4825 is connected to the third trailer sub-swing arm 48261; the two ends of the second transverse tie rod 4827 are respectively connected to the fourth trailer sub-swing arms 48262 on the two second trailer steering swing arms 4826.

[0129] In this embodiment, the requirements for different extreme deflection angles of the first trailer wheel 4201 when passing through a curve can be met by adjusting the length of the first longitudinal tie rod 4815 and the first transverse tie rod 4817 and the angle between the first trailer sub-swing arm 48161 and the second trailer sub-swing arm 48162. Similarly, the requirements for different deflection angles of the second trailer wheel 4401 when passing through a curve can be met by adjusting the length of the second longitudinal tie rod 4825 and the second transverse tie rod 4827 and the angle between the third trailer sub-swing arm 48261 and the fourth trailer sub-swing arm 48262.

[0130] When the steering drive device of this embodiment is in use, the first servo motor 4811 receives the steering input signal transmitted by the controller and then outputs a steering torque. The steering torque output by the first servo motor 4811 is transmitted to the first power transmission device through the first coupling 4813. The first power transmission device outputs a rotational torque to drive the first power steering swing arm 4814 to swing. The first power steering swing arm 4814 transmits the rotational torque to the first trailer steering swing arm 4816 through the first longitudinal tie rod 4815. Since the first trailer steering swing arm 4816 is fixedly connected to the first trailer wheel 4201, and the two first trailer steering swing arms 4816 are connected by the first transverse tie rod 4817, the two first trailer wheels 4201 can be driven to move synchronously and deflected.

[0131] Similarly, the second servo motor 4821 outputs a steering torque after receiving the steering input signal transmitted by the controller. The steering torque output by the second servo motor 4821 is transmitted to the second power transmission device through the second coupling shaft 4823. The second power transmission device outputs a rotational torque to drive the second power steering swing arm 4824 to swing. The second power steering swing arm 4824 transmits the rotational torque to the second trailer steering swing arm 4826 through the second longitudinal tie rod 4825. Since the second trailer steering swing arm 4826 is fixedly connected to the second trailer wheel 4401, and the two second trailer steering swing arms 4826 are connected by the second transverse tie rod 4827, the two second trailer wheels 4401 can be driven to move synchronously and deflected.

[0132] Please continue to refer to Fig.16 In addition, the present embodiment further includes a first mounting seat 4818, which is used to connect the first vehicle body; the first servo motor 4811 and the first power steering device 4812 are both arranged on the first mounting seat 4818. A first limit switch 4819 is arranged on the first mounting seat 4818, and the first limit switch 4819 is arranged on the side of the first mounting seat 4818 facing the first longitudinal tie rod 4815. When the first longitudinal tie rod 4815 contacts the first limit switch 4819, the first limit switch 4819 generates a signal and feeds back to the controller, and the controller issues an instruction to stop the first power transmission device from continuing to move in that direction.

[0133] This embodiment further includes a second mounting seat 4828, which is used to connect to the second vehicle body; the second servo motor 4821 and the second power steering device 4822 are both arranged on the second mounting seat 4828. A second limit switch 4829 is arranged on the second mounting seat 4828, and the second limit switch 4829 is arranged on the side of the second mounting seat 4828 facing the second longitudinal tie rod 4825. When the second longitudinal tie rod 4825 contacts the second limit switch 4829, the second limit switch 4829 generates a signal and feeds back to the controller, and the controller issues an instruction to stop the second power transmission device from continuing to move in that direction.

[0134] Fig.17 Shown in is a simplified diagram of an air spring installation structure provided in one embodiment of the present application; Fig.18 Shown in is a simplified structural diagram of an air spring provided in one embodiment of the present application; Fig.19 FIG. 1 is a partial cross-sectional view of a lifting assembly provided by an embodiment of the present application. Figure 17-Figure 19 The trailer bogie 4 of this embodiment is connected to the first vehicle body and the second vehicle body through a secondary suspension device, and the secondary suspension device is arranged at both ends of the first vehicle axle 42 and the second vehicle axle 44 .

[0135] Specifically, the secondary suspension device of this embodiment includes an air spring 49 with a lifting function. The air spring 49 is usually arranged below the vehicle body to provide vibration reduction for the vehicle body and reduce the vertical vibration of the vehicle body to improve the comfort of passengers. The air spring 49 includes a spring upper cover plate 491, an air bag 492, a flat rubber pile 495 and a lifting assembly; wherein the spring upper cover plate 491, the air bag 492 and the flat rubber pile 495 are arranged in sequence from top to bottom, and the spring upper cover plate 491 is located at the top of the air spring 49, which is not only used for fixed connection with the vehicle body, but also can separate the air bag 492 from the vehicle body, reducing the risk of damage to the air bag 492 due to direct connection to the bottom of the vehicle body.

[0136] The top of the airbag 492 is sealed and connected to the spring upper cover plate 491, the bottom of the airbag 492 is arranged around the top of the flat rubber pile 495, and the airbag 492 is sealed and connected to the flat rubber pile 495, that is, the airbag 492, the spring upper cover plate 491 and the flat rubber pile 495 form a sealed cavity, and air can be injected into or released from the airbag 492 to adjust the elastic force of the air spring 49.

[0137] Please continue to refer to Fig.17 and Fig.19 The lifting assembly is arranged in the sealed cavity and can be used as a lifting device between the vehicle body and the frame. The lifting assembly includes a limit stop cover 493 and a limit stop member 494. The bottom of the limit stop cover 493 is covered and fixed on a flat rubber pile 495. A gap is maintained between the top of the limit stop cover 493 and the spring upper cover plate 491 to allow the vehicle body to vibrate up and down during operation. The limit stop member 494 includes a limit stop block 4941 and a limit stop connecting rod 4942. A through hole is provided on the top of the limit stop cover 493, and the through hole is clearance-matched with the limit stop connecting rod 4942; one end of the limit stop connecting rod 4942 passes through the through hole and is connected to the spring upper cover plate 491, and the other end of the limit stop connecting rod 4942 extends into the limit stop cover 493 and is connected to the limit stop block 4941 located in the limit stop cover 493; if the limit stop connecting rod 4942 has a force to lift or lower it, the limit stop block 4941 can move up and down in the limit stop cover 493.

[0138] It is understandable that the gap between the top of the limit stop cover 493 and the spring upper cover plate 491, and the gap between the top of the limit stop cover 493 and the limit stop block 4941 need to be larger than the maximum vertical displacement during normal operation of the vehicle, and the gap between the limit stop block 4941 and the flat rubber pile 495 needs to be larger than the gap between the top of the limit stop cover 493 and the spring upper cover plate 491, so as to prevent the limit stop block 4941 from contacting the flat rubber pile 495 during normal operation of the air spring.

[0139] When the limit stop connecting rod 4942 has an upward force, the limit stop block 4941 moves upward in the limit stop cover 493, and the limit stop block 4941 can abut against the top of the limit stop cover 493 to transfer the force to the limit stop cover 493, and then transfer it to the flat rubber pile 495 through the limit stop cover 493, so that the frame under the vehicle body can be lifted together with the vehicle body.

[0140] The air spring 49 provided in this embodiment has a lifting assembly disposed in a sealed cavity surrounded by an airbag 492, a spring upper cover plate 491 and a flat rubber pile 495, which not only enables the air spring 49 to have a vibration reduction function, but also utilizes the lifting assembly to connect the vehicle body to the flat rubber pile 495 in the air spring 49, and then connects the frame connected to the flat rubber pile 495 to the vehicle body, thereby arranging a lifting device between the vehicle body and the frame, so that the frame under the vehicle body can be lifted along with the vehicle body.

[0141] Please continue to refer to Figure 17-Figure 19 On the basis of the above-mentioned implementation, the air spring 49 provided in this embodiment further includes a limit stop mounting plate 496, which may be a rectangular plate. The limit stop mounting plate 496 is fixed to the side of the spring upper cover plate 491 facing the limit stop cover 493, and the limit stop mounting plate 496 may be fixed to the spring upper cover plate 491 by bolts, and a gap is reserved between the limit stop mounting plate 496 and the limit stop cover 493 to meet the needs of the upper and lower vibrations of the vehicle body during operation.

[0142] The limit stop mounting plate 496 can be used to fix the limit stop connecting rod 4942. The limit stop mounting plate 496 is provided with a threaded hole. One end of the limit stop connecting rod 4942 extending out of the limit stop cover 493 is threadedly connected in the above-mentioned threaded hole, thereby fixing the limit stop connecting rod 4942 to the limit stop mounting plate 496.

[0143] Please continue to refer to Fig.19Furthermore, the other end of the limit stop connecting rod 4942 extends into the limit stop cover 493, and one end of the limit stop connecting rod 4942 located in the limit stop cover 493 is connected to the limit stop block 4941 located in the limit stop cover 493. The limit stop cover 493 includes a stop cover body 4931, stop cover limit plates 4932 located at both ends of the stop cover body 4931, and a stop cover mounting edge 4933; wherein, an opening is provided at the bottom end of the stop cover body 4931, the opening is arranged opposite to the flat rubber pile 495, and the end face of the opening is fitted with the surface of the flat rubber pile 495, so that when the limit stop block 4941 moves vertically in the limit stop cover 493, the limit stop block 4941 can pass through the opening and abut against the flat rubber pile 495 to limit the limit stop block 4941, thereby limiting the excessive vertical downward displacement of the vehicle body and improving the driving safety of the vehicle.

[0144] A stopper cover mounting edge 4933 is provided along the circumference of the bottom opening of the stopper cover body 4931, and the stopper cover mounting edge 4933 is located outside the stopper cover body 4931; the stopper cover mounting edge 4933 is used to fix the stopper cover body 4931 on the flat rubber pile 495. For example, the stopper cover mounting edge 4933 can be formed by folding the bottom end of the stopper cover body 4931 outward, and the stopper cover mounting edge 4933 is provided with bolts and fixed to the flat rubber pile 495 by bolts, so that the flat rubber pile 495 and the stopper cover mounting edge 4933 are attached and fixed together.

[0145] A stop cover limit plate 4932 is provided at the top of the stop cover body 4931, and the stop cover limit plate 4932 can be regarded as the bottom plate of the stop cover body 4931, that is, the stop cover body 4931 and the stop cover limit plate 4932 are an integrated structure; or, an opening is provided at the top of the stop cover body 4931, and a stop cover limit plate 4932 for sealing the opening is provided; in this embodiment, the stop cover limit plate 4932 and the stop cover body 4931 are preferably integrated into a structure to enhance the connection strength between the stop cover body 4931 and the stop cover limit plate 4932. The stop cover limit plate 4932 is provided with a through hole for the limit stop connecting rod 4942 to pass through. The through hole can be located at the center of the stop cover limit plate 4932, and the through hole and the limit stop connecting rod 4942 are clearance-matched so that the limit stop connecting rod 4942 can be inserted into the through hole and can slide vertically.

[0146] Please continue to refer to Fig.19Furthermore, the limit stop block 4941 is disposed in the stop cover body 4931, and the limit stop block 4941 is fixedly connected to one end of the limit stop connecting rod 4942. It is understandable that the limit stop block 4941 and the limit stop connecting rod 4942 can be an integrated structure to improve the connection strength between the limit stop connecting rod 4942 and the limit stop block 4941; to prevent the limit stop connecting rod 4942 and the limit stop block 4941 from being separated during the lifting process of the frame, thereby affecting the reliability during the lifting process.

[0147] In order to improve the reliability of the lifting process, a first inclined surface is provided at the connection between the stop cover limit plate 4932 and the stop cover body 4931, and the first inclined surface is located on the inner side of the limit stop cover 493, that is, the first inclined surface can be regarded as a part of the inner surface of the limit stop cover 493. A second inclined surface is provided on the side of the limit stop block 4941 facing the stop cover limit plate 4932, and the second inclined surface is arranged in coordination with the first inclined surface. When the limit stop block 4941 is lifted up and abuts against the stop cover limit plate 4932, the first inclined surface and the second inclined surface fit together; the force acting between the first inclined surface and the second inclined surface can make the first inclined surface and the second inclined surface fit together better, thereby improving the stability of the limit stop block 4941 and the limit stop cover 493 during the lifting process.

[0148] On the basis of the above-mentioned embodiment, in order to facilitate the installation of the air spring 49 to the frame, the air spring 49 provided in this embodiment further includes a spring lower cover plate 497, which is located on the side of the flat rubber pile 495 away from the air bag 492, and the spring lower cover plate 497 can be fixed to the frame by bolts, so as to install the air spring 49 on the frame. It can be understood that the air spring 49 includes a spring upper cover plate 491, an air bag 492, a flat rubber pile 495 and a spring lower cover plate 497 arranged in sequence, and the spring upper cover plate 491, the air bag 492, the flat rubber pile 495 and the spring lower cover plate 497 form an integrated structure, which can enhance the structural strength of the air spring 49 and the sealing of the air bag 492; at the same time, it also improves the installation efficiency of the air spring 49.

[0149] Furthermore, the spring lower cover plate 497 is also provided with a positioning pin, which is located on the side of the spring lower cover plate 497 away from the flat rubber pile 495. The positioning pin can form an integral structure with the spring lower cover plate 497 to enhance the connection strength between the spring lower cover plate 497 and the positioning pin. The frame is provided with a plug-in hole that cooperates with the positioning pin. When the positioning pin is plugged into the plug-in hole of the frame, the spring lower cover plate 497 can fit with the upper surface of the frame and be fastened together by bolts. Such a configuration can improve the positioning accuracy between the air spring 49 and the frame, and ensure that the force of the air spring 49 can act vertically on the frame to achieve the vibration reduction effect of the air spring 49.

[0150] Embodiment 2

[0151] This embodiment provides a rubber-wheeled train, including a plurality of carriages connected end to end, wherein the carriages include a car body and a plurality of other parts located in the car body; wherein the car body is the skeleton structure of the carriage, and ensures the strength of the carriage. Two adjacent first car bodies and second car bodies are connected by the trailer bogie as described in the first embodiment above. In this embodiment, the first car body can be a motor vehicle body, and the corresponding second car body can be an intermediate vehicle body; or the first car body can be an intermediate vehicle body, and the corresponding second car body can be a motor vehicle body; or both the first car body and the second car body are intermediate vehicle bodies or motor vehicle bodies.

[0152] Since the rubber-tyred train of this embodiment connects the adjacent first car body and the second car body through the trailer bogie described in the above embodiment 1, it is possible to achieve relatively independent steering control of the first trailer wheels and the second trailer wheels, which is beneficial to reducing the turning radius of the vehicle and facilitating the driving of the vehicle.

[0153] For the convenience of description, this embodiment is described by taking the connection structure between the motor vehicle body and the trailer bogie as an example. It is clear to those skilled in the art that the connection structure between the intermediate vehicle body and the trailer bogie is exactly the same as the connection structure between the motor vehicle body and the trailer bogie, and this embodiment will not be repeated here.

[0154] Fig. 20 : is a schematic diagram of a partial structure of a motor vehicle body provided by an embodiment of the present application; Fig.21 : is a simplified structural diagram of a first vehicle body traction rod seat provided by an embodiment of the present application at a first viewing angle; Fig. 22 : is a simplified structural diagram of a first vehicle body traction rod seat provided by an embodiment of the present application at a second viewing angle; Fig.23 FIG. 2 shows an exploded view of a first vehicle body traction rod seat provided by an embodiment of the present application; Fig.24 : is a simplified structural diagram of a second vehicle body traction rod seat provided by an embodiment of the present application at a first viewing angle; Fig.25 : is a simplified structural diagram of a second vehicle body traction rod seat provided by an embodiment of the present application at a second viewing angle; Fig.26 FIG. 1 is an exploded view of a second vehicle body traction rod seat provided by an embodiment of the present application; please refer to FIG. Fig. 9 , Figure 20-26 .

[0155] In this embodiment, the EMU car body includes a base frame and a top plate that are relatively arranged, and a car body side wall and a car body end wall that connect the base frame and the top plate, wherein the car body end wall is used to connect the trailer traction device 46 on the trailer bogie 4 to transmit traction or braking force between the trailer bogie 4 and the EMU car body, and adapt to the directional relative movement between two adjacent car bodies.

[0156] Please continue to refer to Fig. 9 and Fig. 20 The vehicle body end wall of this embodiment includes two vehicle end outer cross beams 1151 and a vehicle end inner cross beam 1152. In the vehicle body width direction, the vehicle end inner cross beam 1152 is located between the two vehicle end outer cross beams 1151. A first vehicle body traction bar seat 1153 is provided on each vehicle end outer cross beam 1151, and two second vehicle body traction bar seats 1154 are provided on the vehicle end inner cross beam 1152.

[0157] The first vehicle body traction rod seat 1153 is perpendicular to the plane where the vehicle body end wall is located. The first vehicle body traction rod seat 1153 can be vertically connected to one end of the first traction assembly 461. After the connection, the two first traction assemblies 461 are parallel to each other and consistent with the length direction of the vehicle body.

[0158] The two second vehicle body traction rod seats 1154 are located between the two first vehicle body traction rod seats 1153, and the second vehicle body traction rod seats 1154 are tilted away from the adjacent first vehicle body traction rod seats 1153. The two second vehicle body traction rod seats 1154 are tilted relative to each other, so that the second traction components 462 connected thereto are also tilted, and after connection, the two second traction components 462 are generally in an "eight" shape.

[0159] Through the above arrangement, the end wall can simultaneously connect the two first traction components 461 and the two second traction components 462 to jointly transmit the traction force and braking force between the trailer bogie 4 and the vehicle body, reducing the load on each traction component, and at the same time evenly distributing the traction force and braking force to the entire vehicle body end wall to avoid stress concentration.

[0160] At the same time, this embodiment is designed so that the height of the two first vehicle body traction rod seats 1153 can be kept consistent with the height of the wheel center to reduce the loss during the transmission of traction and braking force, and also reduce the wheel weight reduction rate; the two second vehicle body traction rod seats 1154 can ensure the smooth transmission of traction and braking force when the vehicle passes through a small curve, thereby improving the transmission efficiency.

[0161] For details, please refer to Figure 21-23 The first vehicle body traction rod seat 1153 of this embodiment includes a first main body 11531 and two first connection parts 11532, the two first connection parts 11532 are respectively arranged at the two ends of the first main body 11531, and the first connection part 11532 is provided with a first connection hole on the side away from the first main body 11531, and the first connection hole is used to connect with the first traction rod node 4612 on the first traction assembly 461. Optionally, the first connection hole can be a threaded hole, and the first traction rod node 4612 is provided with a corresponding connection through hole, and the fastener passes through the through hole and is fixed in the threaded hole to fix the two.

[0162] Please refer to Figure 24-26 The second vehicle body traction rod seat 1154 includes a second main body 11541 and two second connection parts 11542, the two second connection parts 11542 are respectively arranged at the two ends of the second main body 11541, and the second connection part 11542 is provided with a second connection hole on the side away from the second main body 11541, and the second connection hole is used to connect with the second traction rod node 4622 on the second traction assembly 462. Optionally, the second connection hole can be a threaded hole, and the second traction rod node 4622 is provided with a corresponding connection through hole, and the fastener passes through the through hole and is fixed in the threaded hole to fix the two.

[0163] For further information, please refer to Figure 21-23 The vehicle end outer cross beam 1151 of this embodiment also includes a first mounting beam, two first baffles 11513 and two first clamping plates 11514.

[0164] The first mounting beam includes a first mounting plate 11511 and a first side plate 11512 vertically arranged at both ends of the first mounting plate 11511. The first mounting plate 11511 and the first side plate 11512 together form a first mounting cavity for installing a first vehicle body traction rod seat. The first mounting plate 11511 is provided with a first mounting beam through hole for the first vehicle body traction rod seat to pass through. The first vehicle body traction rod seat is fixed to the first mounting beam after passing through the first mounting beam through hole.

[0165] The first baffle 11513 is arranged opposite to the first mounting plate 11511 to cover part of the first mounting cavity. The first baffle 11513 is fixedly connected to one end of the first side plate 11512 away from the first mounting plate 11511, and the two first baffles 11513 are respectively abutted against the first side and the second side of the first vehicle body traction rod seat.

[0166] The two first clamping plates 11514 are respectively located at the upper and lower sides of the first vehicle body traction rod seat and abut against the first vehicle body traction rod seat. The first clamping plate 11514 is fixedly connected to one end of the first side plate 11512 away from the first mounting plate 11511 .

[0167] In this embodiment, the first vehicle body traction rod seat 151 passes through the first mounting beam through hole, so that one end thereof having the first connection hole faces the trailer bogie 4 to be connected with the corresponding first traction assembly 461. The first vehicle body traction rod seat is fixed in the first mounting cavity by the combined action of the two first clamping plates 11514 and the two first baffles 11513.

[0168] Furthermore, the vehicle end outer cross beam 1151 of the present embodiment further includes two first protection plates 11515, which are respectively arranged on the first side and the second side of the first vehicle body traction bar seat, and the two ends of the first protection plate 11515 are respectively connected to the first mounting plate 11511 and the first baffle plate 11513. The two first protection plates 11515 can protect the first vehicle body traction bar seat 1153 on the first side and the second side of the first vehicle body traction bar seat, thereby increasing its service life.

[0169] In addition, in this embodiment, a plurality of seat mounting interfaces 11516 are provided on the first side panel 11512 , and the seat mounting interfaces 11516 are used to connect to corresponding structures on the seat so as to fix the seat on the end wall of the vehicle body.

[0170] For further information, please refer to Figure 24-26 In this embodiment, the inner cross beam 1152 of the vehicle end further includes a second mounting beam and a second baffle 11523 .

[0171] The second mounting beam includes a second mounting plate 11521 and second side plates 11522 vertically arranged at both ends of the second mounting plate 11521. The second mounting plate 11521 and the second side plates 11522 together form a second mounting cavity for mounting a second vehicle body traction rod seat. The second mounting plate 11521 is provided with a second mounting beam through hole for the second vehicle body traction rod seat to pass through.

[0172] The second baffle plate 11523 is arranged opposite to the second mounting plate 11521 to partially block the second mounting cavity. The second baffle plate 11523 is fixedly connected to the end of the second side plate 11522 facing away from the second mounting plate 11521. The second baffle plate 11523 is provided with a second through hole corresponding to the through hole of the second mounting beam. The second vehicle body traction rod seat passes through the second through hole and the through hole of the second mounting beam in sequence and is fixed on the second mounting beam.

[0173] In this embodiment, the second vehicle body traction rod seat is fixed to the second mounting beam after passing through the second through hole and the second mounting beam through hole in sequence, so that the end with the second connection hole faces the trailer bogie 4 to connect with the corresponding second traction assembly 462. The second vehicle body traction rod seat 1154 is fixed in the second mounting cavity by the limiting effect of the through hole and the second mounting beam through hole.

[0174] Furthermore, the vehicle end inner cross beam 1152 further includes two second protection plates 11524, which are respectively arranged on the first side and the second side of the second vehicle body traction bar seat, and the two ends of the second protection plate 11524 are respectively connected to the second mounting plate 11521 and the second baffle plate 11523. The two second protection plates 11524 can protect the second vehicle body traction bar seat 1154 on the first side and the second side of the second vehicle body traction bar seat, thereby increasing its service life.

[0175] Optionally, the angle between the second vehicle body traction rod seat 1154 of this embodiment and the plane where the vehicle body end wall is located is preferably 30°-40°, within which the second traction component 462 can maintain a high transmission efficiency.

Claims

1. A rubber-tyred train, characterized in that: include: Two mutually connected car bodies, the two car bodies being connected via a trailer bogie; The vehicle body comprises: A bottom frame and a top plate are arranged opposite to each other, and a vehicle body side wall and a vehicle body end wall connecting the bottom frame and the top plate, wherein the vehicle body end wall comprises: two vehicle end outer cross beams and a vehicle end inner cross beam, and in the vehicle body width direction, the vehicle end inner cross beam is located between the two vehicle end outer cross beams; A first vehicle body traction rod seat is provided on each of the vehicle end outer side cross beams, and the first vehicle body traction rod seat is perpendicular to the vehicle body end wall; Two second vehicle body traction rod seats are arranged on the inner side cross beam of the vehicle end, and the second vehicle body traction rod seats are arranged obliquely away from the first vehicle body traction rod seats adjacent thereto; The trailer bogie comprises a first frame and a second frame; the first end of the first frame is hinged to the second frame, the second end of the first frame is provided with a first axle, and the side of the first axle facing away from the second frame is provided with a trailer traction device; the first end of the second frame is hinged to the first frame; the second end of the second frame is provided with a second axle, and the side of the second axle facing away from the first frame is provided with a trailer traction device; The trailer traction device is connected to the trailer bogie and the vehicle body end wall, and the trailer traction device includes: Two first traction assemblies, two ends of the first traction assemblies are respectively connected to a first axle traction rod seat located on the trailer bogie and a first vehicle body traction rod seat located on the vehicle body; wherein the first axle traction rod seat and the first vehicle body traction rod seat are arranged in a one-to-one correspondence, and the first axle traction rod seat and the first vehicle body traction rod seat are both located on both sides of the vehicle body in the width direction; Two second traction assemblies, two ends of the second traction assemblies are respectively connected to a second axle traction rod seat located on the trailer bogie and a second vehicle body traction rod seat located on the vehicle body; wherein the second axle traction rod seat is located between the two first axle traction rod seats, and is located between the two second vehicle body traction rod seats in the vehicle body width direction, and the second axle traction rod seat is tilted toward the first axle traction rod seat adjacent thereto; the second vehicle body traction rod seat is located between the two first vehicle body traction rod seats, and the second vehicle body traction rod seat is tilted away from the first vehicle body traction rod seat adjacent thereto; the two second traction assemblies are tilted, and in the vehicle body width direction, one end of the two second traction assemblies connected to the trailer bogie is located between one end of the two second traction assemblies connected to the vehicle body; The trailer bogie is connected to the two car bodies through a secondary suspension device, and the secondary suspension includes an air spring with a lifting function; and the first traction assembly also includes a height valve stem mounting seat, and the height valve stem mounting seat is used to mount the height valve stem to achieve the adjustment function of the air spring in a limited space; The first vehicle body traction rod seat comprises a first main body and two first connecting parts, the two first connecting parts are respectively arranged at two ends of the first main body, and a first connecting hole is arranged on a side of the first connecting part away from the first main body; The second vehicle body traction rod seat comprises a second main body and two second connecting parts, the two second connecting parts are respectively arranged at two ends of the second main body, and a second connecting hole is arranged on a side of the second connecting part away from the second main body; The first traction assembly includes a first traction rod and two first traction rod nodes, the height valve stem mounting seat is located on the side of the first traction rod facing the trailer bogie, and the height valve stem mounting seat is fixedly connected to the side of the first traction rod node facing the second traction assembly; the height valve stem mounting seat includes a first plate and a second plate perpendicular to each other, the first plate is provided with a first fixing hole adapted to the first connecting hole, and the second plate is used to mount the height valve stem; and the vehicle end outer side beam also includes: a first mounting beam, the first mounting beam comprising a first mounting plate and first side plates vertically arranged at both ends of the first mounting plate, the first mounting plate and the first side plates together enclosing a first mounting cavity for mounting the first vehicle body traction rod seat, the first mounting plate being provided with a first mounting beam through hole for the first vehicle body traction rod seat to pass through, the first vehicle body traction rod seat being fixed to the first mounting beam after passing through the first mounting beam through hole; Two first baffles, the first baffles are arranged opposite to the first mounting plate to cover part of the first mounting cavity, the first baffles are fixedly connected to one end of the first side plate away from the first mounting plate, and the two first baffles are respectively abutted against the first side and the second side of the first vehicle body traction rod seat; Two first clamping plates, the two first clamping plates are respectively located at the upper and lower sides of the first vehicle body traction rod seat and abut against the first vehicle body traction rod seat, and the first clamping plate is fixedly connected to one end of the first side plate away from the first mounting plate; The first side panel is provided with a plurality of seat mounting interfaces, and the seat mounting interfaces are used to connect to corresponding structures on the seat to fix the seat on the end wall of the vehicle body.

2. The rubber-tyred train according to claim 1, characterized in that: The vehicle end outer cross beam also includes: Two first protection plates are respectively arranged on the first side and the second side of the first vehicle body traction rod seat, and two ends of the first protection plate are respectively connected to the first mounting plate and the first baffle.

3. The rubber-tyred train according to claim 1, characterized in that: The vehicle end inner cross beam further comprises: a second mounting beam, the second mounting beam comprising a second mounting plate and second side plates vertically arranged at both ends of the second mounting plate, the second mounting plate and the second side plates together enclosing a second mounting cavity for mounting the second vehicle body traction bar seat, the second mounting plate being provided with a second mounting beam through hole for the second vehicle body traction bar seat to pass through; The second baffle is arranged opposite to the second mounting plate to cover part of the second mounting cavity, the second baffle is fixedly connected to the end of the second side plate facing away from the second mounting plate, the second baffle is provided with a second through hole corresponding to the through hole of the second mounting beam, and the second vehicle body traction rod seat is fixed on the second mounting beam after passing through the through hole and the second mounting beam through hole in sequence.

4. The rubber-tyred train according to claim 3, characterized in that: The vehicle end inner cross beam further comprises: Two second protection plates are respectively arranged on the first side and the second side of the second vehicle body traction rod seat, and two ends of the second protection plate are respectively connected to the second mounting plate and the second baffle plate.

5. The rubber-tyred train according to claim 1, characterized in that: The two ends of the first traction assembly are respectively vertically connected to the trailer bogie and the car body, and the angles between the two ends of the second traction assembly and the trailer bogie and the car body are 30°-40°.

6. The rubber-tyred train according to claim 1, characterized in that: Both ends of the first traction rod are provided with a first traction rod through hole, the axial direction of the first traction rod through hole is perpendicular to the axial direction of the first traction rod, the first traction rod node is fixedly connected in the first traction rod through hole, and the first traction rod node is located on both sides of the first traction rod through hole for connecting the first axle traction rod seat or the first vehicle body traction rod seat; The second traction assembly includes a second traction rod and two second traction rod nodes. Second traction rod through holes are provided at both ends of the second traction rod. The axial direction of the second traction rod through hole is perpendicular to the axial direction of the second traction rod. The second traction rod node is fixedly connected in the second traction rod through hole. The second traction rod node is located on both sides of the second traction rod through hole for connecting the second axle traction rod seat or the second vehicle body traction rod seat.

7. The rubber-tyred train according to claim 6, characterized in that: The first traction rod node is located at both sides of the first traction rod through hole and is provided with first connecting holes for connecting the first axle traction rod seat or the first vehicle body traction rod seat, and the first fastener is fixed on the first axle traction rod seat or the first vehicle body traction rod seat after passing through the first connecting hole; The second traction rod node is located on both sides of the second traction rod through hole and is provided with second connecting holes for connecting the second axle traction rod seat or the second vehicle body traction rod seat. The second fastener passes through the second connecting hole and is fixed on the second axle traction rod seat or the second vehicle body traction rod seat.

8. The rubber-tyred train according to claim 6, characterized in that: The first traction rod through hole and the second traction rod through hole are both oblong structures.

9. The rubber-tyred train according to claim 6, characterized in that: Both ends of the first traction rod and the second traction rod are provided with chamfers.

10. The rubber-tyred train according to claim 6, characterized in that: The first traction rod is a metal rod, and the first traction rod node includes a metal part and a rubber part, and the metal part and the rubber part are vulcanized and formed in one piece; the second traction rod is a metal rod, and the second traction rod node includes a metal part and a rubber part, and the metal part and the rubber part are vulcanized and formed in one piece.

11. The rubber-tyred train according to claim 1, characterized in that: The first frame and the second frame are rotatably connected via a slewing support device, and the slewing support device includes a slewing support cover plate; The swivel support cover plate is arranged on the top of the first frame body, and two through-channel limiting bosses are arranged on the side of the swivel support cover plate away from the first frame body, and a through-channel limiting space is formed between the two through-channel limiting bosses for limiting the movement displacement of the through-channel.

12. The rubber-tyred train according to claim 11, characterized in that: An annular waterproof pad and an elastic pin are arranged between the slewing support cover plate and the first frame. The elastic pin is located on a side of the through-channel limiting boss away from the through-channel. The elastic pin passes through the annular waterproof pad and is fixed on the first frame.

13. The rubber-tyred train according to claim 11, characterized in that: The slewing support device comprises a first rotating body and a second rotating body, the first rotating body is provided with a first step hole and forms a first step surface, and the second rotating body is provided with a second step hole and forms a second step surface; The first rotating body and the second rotating body are arranged on the upper and lower sides, and the second rotating body is fixed on the second step surface; The lower part of the first rotating body is embedded in the second rotating body, and the upper part of the first rotating body protrudes from the second rotating body and is fixed on the first step surface.

14. The rubber-tyred train according to claim 13, characterized in that: Also included is a frame buffer device, the frame buffer device includes a first buffer block mounting seat and a second buffer block mounting seat; Along the direction from the first axle to the second axle, first buffer block mounting seats are symmetrically arranged on both sides of the first end of the first frame, and the first buffer block mounting seats are mounted with a first buffer block; Second buffer block mounting seats are symmetrically arranged on both sides of the first end of the second frame, and the second buffer mounting seats are mounted with a second buffer block; When the first frame and the second frame rotate relatively, the first buffer block and the second buffer block located on the same side of the first frame and the second frame may abut against each other.

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