CN112550455B

CN112550455B - Trailer bogie and rubber wheel train

Info

Publication number: CN112550455B
Application number: CN202011405034.0A
Authority: CN
Inventors: 门永林; 胡定祥; 杨陈; 安培炎; 毕筠宇; 黄瑶
Original assignee: CRRC Nanjing Puzhen Co Ltd
Current assignee: CRRC Nanjing Puzhen Co Ltd
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2023-02-07
Anticipated expiration: 2040-12-04
Also published as: CN112550455A

Abstract

The embodiment of the application provides a trailer bogie and a rubber wheel train, which belong to the technical field of rubber wheel trains and aim to solve the problems that the design difficulty of a train end is increased and the available space of passengers in the end part area of a train is occupied due to the fact that the existing bogie adopts a workshop connection mode; the trailer bogie comprises a first axle, a second axle and a frame connecting the first axle and the second axle; the frame comprises a first frame body and a second frame body, wherein the first end of the first frame body is hinged with the first end of the second frame body, and the second end of the first frame body is connected with a first vehicle frame; the second end of the second frame body is connected with the second vehicle bridge, and the second frame body and the first frame body rotate mutually. The embodiment of the application provides a trailer bogie and rubber tyer train can shorten the distance between two bridges of bogie, reduces the design degree of difficulty of partial structural strength of car end, avoids the axle to occupy the regional passenger usable space of vehicle tip simultaneously.

Description

Trailer bogie and rubber wheel train

Technical Field

The application relates to the technical field of rubber-tyred trains, in particular to a trailer bogie and a rubber-tyred train.

Background

The low-floor trackless vehicle has the advantages of large vehicle marshalling and carrying capacity, low entrance, convenience for getting on and off the vehicle and the like, and plays an increasingly important role in urban traffic.

In a low-floor trackless vehicle, a bogie is taken as the most important structural component, and the structure and various parameters of the bogie directly determine the running stability and riding comfort of the vehicle; in the prior art, multiple grouped vehicles are generally connected in an inter-vehicle connection mode; the connection mode needs stronger structural strength of the vehicle end part, so that the vehicle end part needs stronger structural design; furthermore, such a connection type axle must be disposed in the vehicle, thereby occupying a space available to the passengers at the end of the vehicle body.

Disclosure of Invention

The embodiment of the application provides a trailer bogie and rubber tyer train, it can solve and adopt between the automobile body connected mode and lead to the increase of car end design degree of difficulty and occupy the passenger available space's of automobile body tip problem.

In a first aspect, embodiments of the present application provide a trailer bogie, including a first axle, a second axle, and a frame connecting the first axle and the second axle; the frame comprises a first frame body and a second frame body, wherein the first end of the first frame body is hinged with the first end of the second frame body, and the second end of the first frame body is connected with the first axle; the second end of the second frame body is connected with the second vehicle frame, and the second frame body and the first frame body rotate mutually.

In a second aspect, an embodiment of the present application provides a rubber-tyred train, including: a first vehicle body; a second body disposed opposite the first body, the first and second bodies being connected by a trailer bogie as described in the first aspect.

According to the trailer bogie and the rubber wheel train provided by the embodiment of the application, one end of the first frame body, which is far away from the first axle, is hinged with one end of the second frame body, which is far away from the second axle, and the first frame body and the second frame body rotate mutually; because the rotating center is formed in the middle of the frame body, the distance between two axles of the bogie can be shortened, the axles can be close to the edge of the vehicle end, and the vehicle end part does not need to be designed to adapt to strong stress structures such as traction force, braking force and the like, so that the design difficulty of the vehicle end part is reduced; meanwhile, the vehicle axle is prevented from occupying the available space of passengers in the end area of the vehicle, and the low floor can be realized.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic illustration of a trailer truck according to an embodiment of the present application;

fig. 2 is a schematic top view of a trailer bogie according to an embodiment of the present application (the first steering drive device and the second steering drive device are omitted);

FIG. 3 is a diagrammatic illustration of a connection between a first vehicle body and a second vehicle body provided by an embodiment of the present application;

FIG. 4 is an exploded view of FIG. 3;

fig. 5 is a sectional view illustrating a coupling structure of a slew bearing with a first frame and a second frame according to an embodiment of the present disclosure;

fig. 6 is a sectional view illustrating a coupling structure of a slew bearing with a first frame and a second frame according to another embodiment of the present application;

FIG. 7 is a simplified structural diagram of a pivoting support deck in a first state according to one embodiment of the present application;

FIG. 8 is a simplified structural diagram of a pivoting support deck in a second position as provided by an embodiment of the present application;

FIG. 9 is a schematic view of a trailer truck to body connection configuration provided by an embodiment of the present application;

FIG. 10 is a schematic illustration of a trailer hitch provided in accordance with an embodiment of the present application;

fig. 11 is a schematic front view of a first drawbar according to an embodiment of the present application;

fig. 12 is a schematic partial view of a first drawbar according to an embodiment of the present application;

fig. 13 is a schematic top view of a first drawbar according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of the first frame and the second frame in the first state according to an embodiment of the present disclosure;

fig. 15 is a schematic structural diagram of the first frame and the second frame in a second state according to an embodiment of the present application;

fig. 16 is a schematic structural diagram of a steering drive device according to an embodiment of the present application;

FIG. 17 is a diagrammatic illustration of an air spring mounting arrangement provided in accordance with an embodiment of the present application;

FIG. 18 is a schematic diagram illustrating an air spring according to an embodiment of the present application;

shown in fig. 19 is a partial cross-sectional view of a hoist assembly provided in accordance with an embodiment of the present application.

Reference numerals:

1153-a first body drawbar seat; 1154-a second body drawbar seat;

4-a trailer bogie;

41-a first frame body; 411-a first frame hinge; 412-a first frame connecting part; 413-a first cushion mount arm;

42-a first axle; 4201-a first trailer wheel;

43-a second frame; 431-a second frame hinge, 432-a second frame connection; 433-a second cushion mount arm;

44-a second axle; 441-a first axle drawbar seat; 442-second axle drawbar seat; 4401-a second trailer wheel;

45-a slewing bearing device; 451-slewing bearings; 4511 — first swivel; 4512 — second swivel; 452-a pivoting support deck; 4521-run through passage limit boss; 4522-withdrawal of threaded holes; 4523-spring pin mounting holes; 4524-cover plate fastener mounting holes; 453-waterproof cushion; 454-a resilient pin; 455-sealing the plug; 456-cover plate fasteners;

46-trailer towing means;

461-a first traction assembly; 4611-a first tow bar; 4612 — a first drawbar node; 4613-height valve stem mount; 462-a second pulling assembly; 4621-a second drawbar; 4622-a second drawbar node;

47-frame buffer; 471-a first bump stop mount; 472 — first buffer block; 473-second cushion block mount; 474-a second buffer block;

481 — a first steering drive; 4811-first servomotor; 4812-first power steering; 4813-first coupling; 4814-first power steering swing arm; 4815-first drag link; 4816-first trailer steering swing arm; 48161-first trailer swing arm; 48162-second trailer swing arm; 4817-first track rod; 4818-first mount; 4819-first limit switch;

482-a second steering drive; 4821-second servomotor; 4822-second power steering gear; 4823-second coupling; 4824-a second power steering swing arm; 4825-second drag link; 4826-second trailer steering swing arm; 48261-third trailer sub-swing arm; 48262-fourth trailer swing arm; 4827-second track rod; 4828-second mount; 4829-second limit switch;

49-air spring; 491-spring upper cover plate; 492-balloon; 493-limit stop cover; 4931-a stopper housing body; 4932-limit stop cover plate; 4933-stop cover mounting edge; 494-limit stop; 4941-a limit stop; 4942-limit stop connecting rod; 495-flat rubber pile; 496-a limit stop mounting plate; 497-spring lower cover plate.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict.

Example one

FIG. 1 is a schematic illustration of a trailer truck according to an embodiment of the present application; please refer to fig. 1. The present embodiment provides a trailer bogie 4, mounted below two adjacent first and second vehicle bodies, for carrying not only the first and second vehicle bodies, but also for transmitting tractive forces between the first and second vehicle bodies. The first vehicle body can be a bullet train body, and the corresponding second vehicle body can be an intermediate vehicle body; alternatively, the first body may be an intermediate body and the corresponding second body may be a bullet train body; alternatively, the first body and the second body are both intermediate body.

Specifically, the trailer bogie 4 includes a first frame body 41 and a second frame body 43; the first frame body 41 is used for connecting a first vehicle body, and the second frame body 43 is used for connecting a second vehicle body.

The first end of the first frame body 41 is hinged with the second frame body 43; the second end of first support body 41 is equipped with first axle 42, and the extending direction of first axle 42 is perpendicular to the extending direction of first support body 41 mutually, and the both ends of first axle 42 are connected with first trailer wheel 4201.

The first end of the second frame 43 is hinged to the first frame 41; a second axle 44 is disposed at a second end of the second frame body 43, an extending direction of the second axle 44 is perpendicular to an extending direction of the second frame body 43, and second trailer wheels 4401 are connected to two ends of the second axle 44.

The hinge connection structure between the first frame body 41 and the second frame body 43 may be provided as required, for example, the first end of the first frame body 41 and the first end of the second frame body 43 may be hinged by a shaft pin, and both may rotate relative to the shaft pin. Thus, when the first frame body 41 or the second frame body 43 rotates, the corresponding second frame body 43 or the first frame body 41 can follow the rotation to a certain extent due to the existence of the hinged connection relation.

Compared with the prior art that a plurality of grouped vehicles are connected among vehicle bodies, the vehicle end part in the prior art needs stronger structural design and occupies the space of the vehicle axle arranged towards the vehicle end, so that the vehicle axle must be arranged towards the vehicle, and the available space of passengers in the end area of the vehicle is occupied; the trailer bogie provided by the embodiment of the application comprises a rotatable first frame body 41 and a rotatable 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 vehicle end, the design of strong stress structures such as traction force and braking force is not needed at the vehicle end part, the design difficulty of the vehicle end part is reduced, meanwhile, the vehicle axle is prevented from occupying the available space of passengers at the vehicle end part area, and the low floor can be realized.

Fig. 2 is a schematic top view of a trailer bogie according to an embodiment of the present application (the first steering drive device and the second steering drive device are omitted); FIG. 3 is a schematic view of a connection configuration of a first vehicle body and a second vehicle body according to an embodiment of the present application; FIG. 4 is an exploded view of FIG. 3; fig. 5 is a sectional view illustrating a coupling structure of a slew bearing with a first frame and a second frame according to an embodiment of the present disclosure; fig. 6 is a sectional view illustrating a coupling structure of a slew bearing with a first frame and a second frame according to another embodiment of the present application; please refer to fig. 2-6.

Further, in this embodiment, the first end of the first frame body 41 and the first end of the second frame body 43 are hinged by a rotary supporting device 45.

The slewing bearing device 45 comprises a slewing bearing 451, wherein the slewing bearing 451 comprises a first rotator 4511 and a second rotator 4512 which are in mutual rotation fit, and the rotation axes of the first rotator 4511 and the second rotator 4512 are perpendicular to the ground; the first rotator 4511 may be connected to the first frame body 41, and the second rotator 4512 may be connected to the second frame body 43, that is, the first frame body 41 and the second frame body 43 are rotatably connected through the slewing bearing 451.

Specifically, first support body 41 passes through fastener fixed connection with first turning body 4511, and the first end of first support body 41 is provided with first step hole, and first step hole includes first aperture section and second aperture section, and the aperture of first aperture section is greater than the aperture of second aperture section to form first step face in the transitional coupling department of first aperture section and second aperture section, first aperture section can be close to first turning body 4511 and set up, so that first turning body 4511 installs in the below of first step face.

Similarly, the second frame body 43 is fixedly connected with the second rotator 4512 through a fastener, a second step hole is formed at the first end of the second frame body 43, the second step hole includes a third aperture section and a fourth aperture section, the aperture of the third aperture section is larger than that of the fourth aperture section, so that a second step surface is formed at the transition connection position of the third aperture section and the fourth aperture section; a third bore segment may be disposed adjacent to the second swivel 4512 such that the second swivel 4512 is secured above the second step face.

As shown in fig. 5, in a possible embodiment, in the present embodiment, a first rotator 4511 and a second rotator 4512 are arranged up and down, and the rotation axes of the first rotator 4511 and the second rotator 4512 are perpendicular to the ground, or perpendicular to a first step surface and a second step surface; first rotator 4511 includes a first mounting surface and a bowl-shaped spherical structure protruding from the first mounting surface, an upper bottom surface of the bowl-shaped spherical structure is fixed on the first mounting surface, and a lower bottom surface of the bowl-shaped spherical structure faces second rotator 4512; second swivel 4512 includes a second mounting surface and a second spherical aperture that mates with the bowl-shaped spherical structure and faces first swivel 4511.

A second mounting surface of the second rotator 4512 is attached to a second step surface, the second mounting surface is connected with the second step surface through a bolt, and the second rotator 4512 is embedded in the second frame body 43; a first mounting surface of the first rotator 4511 is attached to the first step surface, the first mounting surface is connected with the first step surface through a bolt, part of the bowl-shaped spherical structure is inserted into the second spherical hole, the side surface of the bowl-shaped spherical structure is attached to the hole wall of the second spherical hole, a certain gap is vertically arranged between the first frame body 41 and the second frame body 43, and the bowl-shaped spherical structure can be laterally offset in the second spherical hole; that is, first rotator 4511 and second rotator 4512 may not only rotate about the rotation axis but also deflect laterally.

As shown in fig. 6, in another possible embodiment, a first rotator 4511 and a second rotator 4512 are arranged up and down, the first rotator 4511 has a first mounting surface, and the first mounting surface is attached and fixed to a first step surface; the second rotator 4512 has a second mounting surface, and the second mounting surface is attached to and fixed to the second step surface; wherein, second body 4512 is provided with bowl-shaped spherical surface structure, and first body 4511 is provided with the first spherical hole with bowl-shaped spherical surface structure matched with, and the side of bowl-shaped spherical surface structure and the lateral wall laminating of first spherical hole, has certain clearance between first support body 41 and the second support body 43 at the vertical, can make bowl-shaped spherical surface structure in first spherical downthehole side direction offset, first body 4511 and second body 4512 not only can be rotatory around the axis of rotation promptly, but also lateral deflection.

In this embodiment, the first rotator 4511 and the second rotator 4512 are arranged up and down, and the rotation axes of the first rotator 4511 and the second rotator 4512 are perpendicular to the ground, or perpendicular to the first step surface and the second step surface; a second mounting surface of the second rotator 4512 is attached to a second step surface, the second mounting surface is connected to the second step surface through a bolt, and the second rotator 4512 is embedded in the second frame body 43; the first mounting surface of the first rotator 4511 is attached to the first step surface, the first mounting surface is connected with the first step surface through a bolt, and a certain floating gap is formed between the first frame body 41 and the second frame body 43, so that the first rotator 4511 and the second rotator 4512 have certain lateral deflection capability in the rotating process around the rotating axis, and the curve passing performance and the adaptability of a vehicle can be improved.

FIG. 7 is a simplified structural diagram of a pivoting support deck in a first position according to an exemplary embodiment of the present disclosure; FIG. 8 is a schematic view of a pivoting support deck provided in accordance with an embodiment of the present application in a second state; please refer to fig. 5-8.

In this embodiment, a rotary supporting cover plate 452 is further disposed above the first frame body 41, and the rotary supporting cover plate 452 is used for sealing the first step hole of the first frame body 41; the rotation support cover 452 may be a circular plate, the rotation support cover 452 is disposed on the first end of the first frame 41, and the rotation support cover 452 is attached to the surface of the first frame 41 for sealing the first stepped hole. For example, the pivoting support cover 452 is covered at the first stepped hole and fixed to the first frame 41. With such an arrangement, dust, impurities, rainwater, etc. can be prevented from entering the rotary support, and the reliability of the rotary support device 45 can be improved.

Two through passage limiting bosses 4521 are arranged on one side, away from the first frame body 41, of the rotary support cover plate 452, the two through passage limiting bosses 4521 are arranged on the rotary support cover plate 452 at intervals and protrude out of the surface of the rotary support cover plate 452, so that through passage limiting spaces are formed between the rotary support cover plate 452 and the rotary support cover plate 452; the bottom surface of the through passage facing the rotary supporting cover plate 452 is provided with a through passage limiting block, and the through passage limiting block can be embedded in the limiting space. The through passage limiting block can be limited between two through passage limiting bosses 4521, and the through passage limiting bosses 4521 can limit the deformation and the rotation angle of the through passage.

For example, two through passage limiting bosses 4521 may be disposed in a central region of the revolving support cover plate 452 and symmetrically distributed on the revolving support cover plate 452. The rotary support cover plate 452 may be a circular rotary support cover plate 452, two through passage limiting bosses 4521 are symmetrically arranged along the center of the rotary support cover plate 452, a certain distance is provided between the two through passage limiting bosses 4521, and the distance forms an insertion space for a through passage limiting block; along the length direction of the bogie, the two through passage limiting bosses 4521 are respectively positioned at the left side and the right side of the through passage limiting blocks, so that the deformation and the rotation angle of the through passage can be limited, and the deformation and the rotation angle of the through passage are prevented from being too large.

Referring to fig. 6, on the basis of the above embodiment, an annular waterproof pad 453 is further disposed between the revolving support cover 452 and the first frame 41 to prevent external water from entering the revolving bearing 451, so as to prevent the revolving bearing 451 from being corroded due to the water entering, and improve the rotation reliability of the first frame 41 and the second frame 43.

Specifically, the gyration is supported apron 452 and is provided with the installation space of sinking platform in order to form waterproof pad 453 towards one side of first support body 41, waterproof pad 453 encircles the setting of second step hole, one side and the gyration of waterproof pad 453 support apron 452 butt, the opposite side and first support body 41 butt, and the free thickness of waterproof pad 453 is greater than the degree of depth of sinking platform, waterproof pad 453 is in the compressed state after the installation, through compressing waterproof pad 453, can promote the water-proof effects between gyration support apron 452 and first support body 41.

Further, the pivoting support cover 452 is secured to the first frame 41 by a plurality of cover fasteners 456. For example, a plurality of cover fasteners 456 are arranged at equal intervals along the circumferential direction of the swing support cover 452, and the first frame body 41 is provided with cover fastener mounting holes 4524 that mate with the cover fasteners 456; cover plate fasteners 456 may be fastening bolts, cover plate fastener mounting holes 4524 provided in the first frame body 41 may be threaded holes, and one end of the cover plate fastener 456 may pass through the spacer, the pivoting support cover plate 452, and be fixed to the first frame body 41, thereby fixing the pivoting support cover plate 452 to the first frame body 41.

On the basis of the above embodiment, the cover fastening member 456 and the waterproof pad 453 may be disposed opposite to each other to improve the waterproof effect between the first frame 41 and the revolving support cover 452; for example, the waterproof pad 453 is disposed opposite to the cover fastening member 456, and the waterproof pad 453 has a through hole for the cover fastening member 456 to pass through, that is, one end of the cover fastening member 456 passes through the rotation supporting cover 452 and the waterproof pad 453 and is fixed on the first frame 41, so that the waterproof effect between the rotation supporting cover 452 and the first frame 41 can be improved.

Referring to fig. 4, when the rotation supporting cover 452 is subjected to an impact force from the through passage, in order to prevent the cover fastening member 456 from being broken due to the impact force, an elastic pin 454 is further disposed between the rotation supporting cover 452 and the first frame 41, and the elastic pin 454 is used for resisting the rotation supporting cover 452 from being subjected to the impact force from the through passage. Specifically, two elastic pins 454 are arranged between the rotary supporting cover plate 452 and the first frame 41, the two elastic pins 454 are respectively located at the outer sides of the two through passage limiting bosses 4521 far away from the through passage, and the elastic pins 454 are arranged opposite to the through passage limiting bosses 4521. For example, the revolving support cover plate 452 is provided with two elastic pin mounting holes 4523, two through passage limiting bosses 4521 are located between the two elastic pin mounting holes 4523, and the elastic pin 454 is inserted into the elastic pin mounting hole 4523 and fixed on the first frame body 41; the impact force borne by the through passage limiting boss 4521 can be transmitted to the elastic pin 454 along a straight line, and the offset effect of the impact force is improved.

Further, the elastic pin 454 may be disposed opposite to the waterproof pad 453, the waterproof pad 453 may be provided with a through hole through which the elastic pin 454 passes, and one end of the elastic pin 454 passes through the rotation support cover 452 and the waterproof pad 453 and is inserted into the first frame body 41. So set up, can promote waterproof pad 453 to the waterproof effect of gyration support apron 452 and first support body 41.

Referring to fig. 6, in addition to the above embodiments, in this embodiment, a detaching screw hole 4522 and a sealing plug 455 for sealing the detaching screw hole 4522 are further disposed on the rotation supporting cover 452, and the detaching screw hole 4522 penetrates through the rotation supporting cover 452. When the rotary supporting cover plate 452 needs to be detached, the sealing plug 455 is detached from the detaching threaded hole 4522, so that one end of the detaching threaded hole 4522 is open, a tool bolt is suspended in the detaching threaded hole 4522, the end of the tool bolt abuts against the first frame body 41, and external force is applied to the tool bolt, so that the rotary supporting cover plate 452 is separated from the first frame body 41; accordingly, when it is not necessary to disassemble the pivoting support cover 452, the sealing plug 455 is installed in the withdrawal threaded hole 4522 and seals the withdrawal threaded hole 4522.

FIG. 9 is a schematic view of a trailer truck to body connection configuration provided by an embodiment of the present application; FIG. 10 is a schematic illustration of a trailer hitch provided in accordance with an embodiment of the present application; please refer to fig. 9-10. Further, the trailer bogie 4 of the present embodiment further includes a trailer traction device 46, and the trailer traction device 46 is disposed on a side of the first axle 42 facing away from the first frame body 41 and a side of the second axle 44 facing away from the second frame body 43. The trailer hitch 46 is used to couple the trailer truck 4 to an adjacent first or second vehicle body to transmit tractive effort or braking effort between the trailer truck 4 and the vehicle body and to accommodate each directional relative movement between the adjacent first or second vehicle bodies. In the present embodiment, a connection structure between the trailer traction device 46 and the body of the motor vehicle is described as an example, and a connection structure between the other side thereof and the body of the intermediate vehicle is not shown in the drawing.

Specifically, with continued reference to fig. 9 and 10, the trailer towing mechanism 46 of the present embodiment includes two first towing assemblies 461 and two second towing assemblies 462.

Wherein both ends of the first tow assembly 461 are adapted to be connected to a first axle tow bar mount 441 on the trailer bogie 4 and a first body tow bar mount 1153 on the vehicle body, respectively. The first axle draw bar base 441 and the first vehicle body draw bar base 1153 are disposed in one-to-one correspondence, and the first axle draw bar base 441 and the first vehicle body draw bar base 1153 are both located on both sides in the vehicle body width direction. Both ends of the first pulling member 461 may be perpendicularly connected to the first axle drawbar seat 441 and the first body drawbar seat 1153, and the two first pulling members 461 are parallel to each other and consistent with the length direction of the vehicle body after the connection.

The second hitch assembly 462 is adapted at each end for connection to a second axle drawbar seat 442 on the trailer truck 4 and a second body drawbar seat 1154 on the vehicle body. The second axle rod seat 442 is located between the two first axle rod seats 441, and is located between the two second axle rod seats 1154 in the vehicle body width direction, and the second axle rod seat 442 is disposed obliquely toward the first axle rod seat 441 adjacent thereto. The second vehicle body drawbar seat 1154 is located between two first vehicle body drawbar seats 1153, the second vehicle body drawbar seat 1154 being angled away from its adjacent first vehicle body drawbar seat 1153. The two second traction assemblies 462 are disposed at an angle, and the end of the two second traction assemblies 462 connected to the trailer bogie 4 is located between the ends of the two second traction assemblies 462 connected to the vehicle body, so that the two second traction assemblies 462 are substantially in the shape of an "eight" after connection.

With the above arrangement, the two first traction assemblies 461 and the two second traction assemblies 462 together transmit the traction force and the braking force between the trailer bogie 4 and the vehicle body connected thereto, so that the load on each traction assembly is reduced, and the traction force and the braking force are equally distributed to the entire vehicle body frame and the trailer bogie 4, thereby avoiding the stress concentration.

Meanwhile, the present embodiment can keep the heights of the two first traction assemblies 461 consistent with the height of the wheel center, so as to reduce the loss during the transmission of the traction force and the braking force, and also reduce the wheel load shedding rate; the two second traction assemblies 462 can ensure smooth transmission of traction force and braking force when the vehicle passes through a small curve, and the transmission efficiency is improved.

Alternatively, both ends of the first traction assembly 461 of the present embodiment are vertically connected to the trailer bogie 4 and the vehicle body connected thereto, respectively, to ensure the transmission efficiency of the traction force and the braking force. The angle between the ends of the second traction assembly 462 and the trailer bogie 4 and the vehicle body is 30-40 deg., within which the second traction assembly 462 can maintain high transmission efficiency.

Optionally, with continued reference to fig. 10, the first traction assembly 461 of this embodiment includes a first traction rod 4611 and two first traction rod nodes 4612, two ends of the first traction rod 4611 are both provided with first traction rod through holes, an axial direction of the first traction rod through holes is perpendicular to an axial direction of the first traction rod 4611, the first traction rod nodes 4612 are fixedly connected in the first traction rod through holes, that is, after one end of the first traction rod node 4612 passes through the first traction rod through hole, a middle portion of the first traction rod node is fixed to the first traction rod through hole. The first drawbar node 4612 is located at two sides of the first drawbar through hole and is used for connecting the first axle drawbar seat 441 or the first body drawbar seat 1153, and the specific connection mode may be bolt connection, hinge connection, or the like.

The second traction assembly 462 includes a second traction rod 4621 and two second traction rod nodes 4622, wherein 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 holes is perpendicular to the axial direction of the second traction rod 4621, the second traction rod nodes 4622 are fixedly connected in the second traction rod through holes, that is, one end of the second traction rod node 4622 passes through the second traction rod through hole and then the middle part thereof is fixed with the second traction rod through hole. The second drawbar node 4622 is disposed on two sides of the second drawbar through hole for connecting to the second axle drawbar seat 442 or the second body drawbar seat 1154, and the specific connection method may be bolt connection, hinge connection, or the like.

Preferably, with continued reference to fig. 9 and 10, the first drawbar node 4612 of the present embodiment is provided with a first connection hole for connecting to the first axle drawbar seat 441 or the first body drawbar seat 1153 at both sides of the first drawbar through hole, and the first fastener is fixed to the first axle drawbar seat 441 or the first body drawbar seat 1153 after passing through the first connection hole. The first connecting hole can be a through hole, the first fastener can be a bolt, threaded fixing holes matched with the first fastener are formed in the first axle drawbar seat 441 and the first vehicle body drawbar seat 1153, and the first fastener can pass through the first connecting hole and then be fixed in the threaded fixing holes.

The second drawbar joint 4622 has second coupling holes on both sides of the second drawbar through-hole for coupling to the second axle drawbar seat 442 or the second body drawbar seat 1154, and the second fastener is fixed to the second axle drawbar seat 442 or the second body drawbar seat 1154 after passing through the second coupling holes. The second connecting hole may be a through hole, the second fastener may be a bolt, threaded fixing holes adapted to the second fastener are formed in the second axle drawbar seat 442 and the second vehicle body drawbar seat 1154, and the second fastener may pass through the first connecting hole and then be fixed in the threaded fixing holes.

In the embodiment, the traction assembly can be conveniently mounted and dismounted by adopting a bolt connection mode, so that subsequent overhaul and maintenance are facilitated.

Further, with continued reference to FIG. 10, first pulling assembly 461 of the present embodiment further comprises height stem mount 4613, height stem mount 4613 is used to mount a height stem for air spring adjustment in confined spaces.

A height stem mount 4613 is located on the side of the first drawbar 4611 facing the trailer bogie 4, and the height stem mount 4613 is fixedly coupled to the side of the first drawbar node 4612 facing the second drawbar assembly 462.

Specifically, the height valve rod mounting base 4613 of this embodiment includes mutually perpendicular first flat board and second flat board, is equipped with the first fixed orifices with first connecting hole looks adaptation on the first flat board, and the second flat board is used for the high valve rod of installation. 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 first flat plate and the second flat plate to increase the connection strength.

Fig. 11 is a schematic front view of a first drawbar according to an embodiment of the present application; fig. 12 is a schematic partial view of a first drawbar according to an embodiment of the present application; please refer to fig. 11-12. Optionally, the first traction rod through hole and the second traction rod through hole in this embodiment are both long round structures, so as to increase the strength of the joint of the traction rod node and the traction rod. Taking the first traction rod 4611 as an example, the radius corresponding to the first traction rod through hole is R1, the long round structure means that one end of the first traction rod 4611 wrapping the first traction rod through hole is composed of two semicircular structures with the radius of R2 and a horizontal part connecting the two semicircular structures and having the length of L, wherein a distance of L/2 is formed between the circle center corresponding to the semicircular structure and the circle center of the first traction rod through hole.

Fig. 13 is a schematic side view of a first drawbar according to an embodiment of the present application; please refer to fig. 13. Further, in this embodiment, both ends of the first and

second traction rods

4611 and 4621 are chamfered to avoid interference with the vehicle body or the trailer bogie 4 during operation.

Preferably, in this embodiment, the first traction rod 4611 is a metal rod, and the first traction rod node 4612 includes a metal part and a rubber part, and the metal part and the rubber part are integrally formed by vulcanization; the second traction rod 4621 is a metal rod and the second traction rod node 4622 includes a metal portion and a rubber portion, the metal portion and the rubber portion being integrally formed by vulcanization.

The traction rods of the embodiment are all made of alloy steel materials through forging and machining, and are high in strength and good in toughness; the traction rod node is formed by vulcanizing metal and rubber, can buffer the impact during traction and braking, adapts to the relative movement between the vehicle body and the trailer bogie 4, relieves the impact during traction and braking, and optimizes the stress condition of the vehicle body and the trailer bogie 4.

Fig. 14 is a schematic view of a first and a second magazine provided according to an embodiment of the present application in a first state; fig. 15 is a schematic structural view of the first and second racks in the second state according to an embodiment of the present disclosure; please refer to fig. 14-15. Furthermore, when the trailer bogie passes through a curve, in order to adapt to the radius of the curve well, a certain included angle is formed between different frame bodies in a curve section. The trailer bogie provided by the embodiment further comprises a frame body buffer device 47; along the direction of first axle 42 to second axle 44, the first end of first support body 41 is the symmetry respectively and is provided with two support body buffer 47, and the first end of second support body 43 is the symmetry respectively and is provided with two support body buffer 47. For convenience of description, it is defined that the magazine buffer 47 provided on the first magazine 41 is defined as a first magazine buffer, and the magazine buffer 47 provided on the second magazine 43 is defined as a second magazine buffer.

The first frame body buffering device and the second frame body buffering device are arranged in a matched mode, and after the first frame body 41 and the second frame body 43 rotate for a certain angle, the first frame body buffering device and the second frame body buffering device can be abutted. Furthermore, the first frame buffer device and the second frame buffer device located on the same side may be located on the same rotation path. When the first frame body 41 and the second frame body 43 rotate relatively, the gap between the first frame body buffering device and the second frame body buffering device is gradually reduced until the first frame body buffering device contacts with the second frame body buffering device, and a buffering force is provided for the first frame body 41 and the second frame body 43, so that the first frame body 41 and the second frame body 43 are prevented from being in rigid contact; continuing the extrusion, first support body buffer no longer takes place elastic deformation with second support body buffer, can carry on spacingly to first support body 41 and second support body 43 to reach the purpose of rigidity restriction, thereby restricted the rotation angle between first support body 41 and the second support body 43.

Referring to fig. 14, in one possible embodiment, 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 for mounting 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 part formed by combining a buffer block made of rubber and a metal mounting seat together through a certain process, the metal mounting seat is used for being fixedly connected with the first buffer seat mounting arm 413, and the rubber buffer block is suspended and used as a buffer.

The first buffer mount mounting arm 413 may be an arc-shaped blocking arm, the bending extending direction of the first buffer mount mounting arm is consistent with the rotating direction of the first frame 41, one end of the first buffer mount mounting arm 413 is fixedly connected with the first frame 41, and the other end of the first buffer mount mounting arm 413 is fixed with a first buffer mount 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 mounted on the second frame 43 through the second buffer seat mounting arm 433, and the structure of the second buffer seat mounting arm 433 can refer to the structure of the first buffer seat mounting arm 413, which is not described herein again.

Referring to fig. 15, preferably, when the first frame buffer device contacts the second frame buffer device, the first buffer block 472 and the second buffer block 474 may contact each other in a front direction, and the first buffer block 472 is opposite to the second rubber, so as to provide the maximum buffer force for the first frame buffer device and the second frame buffer device, and reduce vibration and noise caused by impact during the rotation of the first frame 41 and the second frame 43.

On the basis of the above embodiments, in order to facilitate mounting the bracket between the first axle 42 and the second axle 44, the first frame body 41 and the second frame body 43 are provided in this embodiment as a split structure, and the first frame body 41 includes a first frame body coupling portion 412 coupled to the first axle 42 and a first frame body hinge portion 411 coupled to the first frame body coupling 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 may be manufactured as an integral structure.

One end of the first frame hinge portion 411 is fixedly connected to the first frame connecting portion 412 by a bolt, and the other end of the first frame hinge portion 411 is connected to the first rotator 4511 of the slewing bearing 451. First buffer mount arms 413 are further respectively disposed at two sides of the first frame hinge 411, and the first buffer mount arms 413 and the first frame hinge 411 may form an integrated structure to enhance the connection strength between the first buffer mount arms 413 and the first frame hinge 411.

Similarly, the second frame body 43 includes a second frame body coupling portion 432 coupled to the second axle 44 and a second frame body hinge portion 431 coupled to the second frame body coupling portion 432, and the second frame body coupling portion 432 is fixedly coupled to the second axle 44, or the second frame body coupling portion 432 and the second axle 44 may be manufactured as an integral structure; one end of the second frame body coupling part 432 is fixedly coupled to the second frame body hinge part 431 by a bolt, and the other end of the second frame body hinge part 431 is coupled to the second rotator 4512 of the slewing bearing 451. Second buffer seat mounting arms 433 are further respectively disposed at both sides of the second frame body hinge 431, and the second buffer seat mounting arms 433 may form an integrated structure with the second frame body hinge 431 to enhance the connection strength of the second buffer block mounting seat 473 and the second frame body hinge 431.

Referring to fig. 14 and 15, in order to lift the rotation angles of the first frame body 41 and the second frame body 43, the first frame body 41 and the second frame body 43 are integrally triangular or trapezoidal, the second end of the first frame body 41 is connected to the first axle 42, the first end is connected to the swivel bearing 451, the second end of the second frame body 43 is connected to the second axle 44, and the first end of the second frame body 43 is connected to the swivel bearing 451, so that a larger rotation space is formed at one end of the first frame body 41 and one end of the second frame body 43 close to the swivel bearing 451, and the rotation angle requirements of the first frame body 41 and the second frame body 43 are met.

With reference to fig. 2, 14 and 15, on the basis of the above embodiment, hollow structures are further disposed on the first frame body 41 and the second frame body 43 to reduce the weight of the first frame body 41 and the second frame body 43. Specifically, the first frame connecting portion 412 and the first frame hinge portion 411 of the first frame 41 are respectively provided with a hollow structure; for example, the first frame connecting portion 412 may 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 connecting portion 412; the number of the trapezoidal or square holes in the hollow structure is related to the arrangement of the connecting bolts, and the trapezoidal holes and the square holes which are uniformly arranged are beneficial to uniform transmission of stress; the size of the hollowed-out space fully considers the installation space of the bolt and the fastening operation space of the bolt. The embodiment of the application adopts the trapezoid and the square as the hollow structures, so that the change of the size of the two connecting ends is fully considered, gradual transition is realized, and stress concentration is avoided.

The first frame body hinge portion 411 may be provided with a second hollow structure, the second hollow structure includes a plurality of elongated holes, and the plurality of elongated holes may be symmetrically disposed on the first frame body hinge portion 411; the extending direction of the elongated hole is parallel to the extending direction of the hinge portion 411, so that the elongated hole is consistent with the arrangement direction of the bolt, and is consistent with the longitudinal stress direction of larger traction force, braking force and the like, thereby being beneficial to the stress of the bolt.

Further, the second frame body connecting portion 432 and the second frame body hinge portion 431 of the second frame body 43 are provided with a hollow structure; for example, the second frame connecting portion 432 may have a third hollow structure, and the third hollow structure may be arranged 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 is not described herein again.

Fig. 16 is a schematic structural diagram of a steering drive device according to an embodiment of the present application; please refer to fig. 1 and fig. 16. Further, in order to realize steering control of the trailer bogie 4, the trailer bogie of the present embodiment further includes a steering drive device. The steering driving means includes a first steering driving means 481 connected to the first frame body 41 and a second steering driving means 482 connected to the second frame body 43. The first steering drive device 481 is connected to the first trailer wheel 4201 for driving the first trailer wheel 4201 to rotate; the second steering drive device 482 is coupled to the second trailer wheel 4401 for driving the second trailer wheel 4401 to rotate.

The trailer bogie 4 of the present embodiment is hinged between the first frame body 41 and the second frame body 43, and controls the rotation of the first trailer wheel 4201 through the first steering driving device 481, and controls the rotation of the second trailer wheel 4401 through the second steering driving device 482, so that the steering of the first vehicle body connected with the first frame body 41 and the second vehicle body connected with the second frame body 43 can be controlled relatively independently, thereby being beneficial to reducing the turning radius of the vehicle, facilitating the driving of the vehicle, and improving the flexibility of driving on urban roads.

Specifically, the first steering drive 481 of the present embodiment includes a first drive portion for providing steering power and a first transmission portion; the first transmission portion connects the first drive portion and the first trailer wheel 4201, and the first transmission portion is configured to transmit steering power supplied from the first drive portion to the first trailer wheel 4201.

The second steering driving device 482 includes a second driving part for providing steering power and a second transmission part; the second transmission portion connects the second driving portion and the second trailer wheel 4401, and the second transmission portion is used for transmitting the steering power provided by the second driving portion to the second trailer wheel 4401.

With continued reference to fig. 16, further, the first driving portion includes a first servo motor 4811 and a first power steering 4812; the first servo motor 4811 is in communication connection with the controller, and the first servo motor 4811 is configured to output a steering force; the first power steering 4812 is used for changing the direction of the steering force output by the first servo motor 4811 to provide the steering power to the first transmission unit, the first power steering 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 4812 is connected to the first transmission unit.

The second driving part comprises a second servo motor 4821 and a second power steering 4822, the second servo motor 4821 is in communication connection with the controller, and the second servo motor 4821 is used for outputting steering force; the second power steering 4822 is used to change the direction of the steering force output by the second servo motor 4821 to provide the steering power to the second transmission unit, the second power steering 4822 is connected to the output end of the second servo motor 4821 through a second coupling 4823, and the output end of the second power steering 4822 is connected to the second transmission unit.

In one possible implementation, the first transmission unit of the present embodiment includes a first power steering swing arm 4814, a first drag link 4815, a first trailer steering swing arm 4816, and a first drag link 4817, wherein a first end of the first power steering swing arm 4814 is connected to an output end of the first power steering 4812; a first end of the first drag link 4815 is connected to a 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, the first trailer steering swing arm 4816 includes a first body, and a first trailer sub swing arm 48161 and a second trailer sub swing arm 48162 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, an included angle is formed between the first trailer sub swing arm 48161 and the second trailer sub swing arm 48162, and the second end of the first drag link 4815 is connected to the first trailer sub swing arm 48161; two ends of the first track rod 4817 are connected to two second trailer swing sub-arms 48162 of the first trailer steering swing arm 4816, respectively.

The second transmission part of the present embodiment includes a second power steering swing arm 4824, a second drag link 4825, a second trailer steering swing arm 4826, and a second drag link 4827, wherein a first end of the second power steering swing arm 4824 is connected to an output end of a second power steering 4822; a first end of a second drag link 4825 is connected to a second end of a second power steering swing arm 4824; the second trailer steering swing arm 4826 is fixedly connected to the second trailer wheel 4401, the second trailer steering swing arm 4826 includes a second body and a third trailer sub swing arm 48261 and a fourth trailer sub swing arm 48262 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, an included angle is formed between the third trailer sub swing arm 48261 and the fourth trailer sub swing arm 48262, and the second end of the second longitudinal pull rod 4825 is connected to the third trailer sub swing arm 48261; two ends of the second track rod 4827 are respectively connected to the fourth trailer sub-swing arms 48262 on the two second trailer steering swing arms 4826.

The present embodiment can meet the requirement of different limit deflection angles of the first trailer wheel 4201 during curve passing by adjusting the lengths of the first drag link 4815 and the first drag link 4817 and the size of the included angle between the first trailer swing arm 48161 and the second trailer swing arm 48162. Similarly, the requirement of different deflection angles of the second trailer wheel 4401 during curve passing can be met by adjusting the lengths of the second drag link 4825 and the second drag link 4827 and the size of the included angle between the third trailer sub swing arm 48261 and the fourth trailer sub swing arm 48262.

When the steering drive device of this embodiment is in use, the first servo motor 4811 receives a steering input signal transmitted by the controller and outputs a steering torque, the steering torque output by the first servo motor 4811 is transmitted to the first power transmission via the first coupling 4813, the first power transmission outputs a rotational torque to drive the first power steering swing arm 4814 to swing, the first power steering swing arm 4814 transmits a rotational torque to the first trailer steering swing arm 4816 via the first drag link 4815, and 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 via the first drag link 4817, the two first trailer wheels 4201 can be driven to move synchronously and deflect.

Similarly, the second servo motor 4821 receives the steering input signal transmitted by the controller and outputs a steering torque, the steering torque output by the second servo motor 4821 is transmitted to the second power transmission device through the second coupling 4823, the second power transmission device outputs a rotation torque to drive the second power steering swing arm 4824 to swing, the second power steering swing arm 4824 transmits the rotation torque to the second trailer steering swing arm 4826 through the second longitudinal tie rod 4825, because 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 through the second tie rod 4827, the two second trailer wheels 4401 can be driven to move synchronously and deflect.

Referring to fig. 16, in addition, the present embodiment further includes a first mounting seat 4818, where the first mounting seat 4818 is used to connect to a first vehicle body; the first servo motor 4811 and the first power steering 4812 are both provided on the first mount 4818. A first limit switch 4819 is disposed on the first mounting seat 4818, and the first limit switch 4819 is disposed on one side of the first mounting seat 4818 facing the first drag link 4815. When the first trailing arm 4815 contacts the first limit switch 4819, the first limit switch 4819 generates a signal and feeds the signal back to the controller, which will send a command to stop the first power driver from continuing to move in that direction.

The present embodiment further includes a second mounting seat 4828, where the second mounting seat 4828 is used for connecting to a second vehicle body; a second servo motor 4821 and a second power steering 4822 are provided on the second mount 4828. A second limit switch 4829 is disposed on the second mounting base 4828, and the second limit switch 4829 is disposed on a side of the second mounting base 4828 facing the second trailing arm 4825. When the second trailing arm 4825 contacts the second limit switch 4829, the second limit switch 4829 generates a signal and feeds the signal back to the controller, which will send a command to stop the second power driver from continuing to move in that direction.

FIG. 17 is a diagrammatic illustration of an air spring mounting arrangement provided in accordance with an embodiment of the present application; FIG. 18 is a schematic view of an air spring according to an embodiment of the present application; fig. 19 is a schematic diagram of a lifting assembly according to an embodiment of the present disclosure. Please refer to fig. 17-19. The trailer bogie of the present embodiment connects the above-described first vehicle body and second vehicle body by a secondary suspension device provided at both ends of the first axle 42 and second axle 44.

Specifically, the secondary suspension device of this embodiment includes air spring 49 that has the function of lifting, and air spring 49 sets up in the below of automobile body usually for the automobile body provides the damping, slow down the vertical vibration of automobile body, in order to promote passenger's travelling comfort. The air spring 49 comprises an upper spring cover plate 491, an air bag 492, a flat rubber pile 495 and a lifting component; the spring upper cover plate 491 is located at the top of the air spring 49, and is not only used for being fixedly connected with the vehicle body, but also can separate the air bag 492 from the vehicle body, so that the risk of damage to the air bag 492 due to direct connection at the bottom of the vehicle body is reduced.

The top of the air bag 492 is connected with the upper spring cover plate 491 in a sealing manner, the bottom of the air bag 492 is enclosed around the top of the flat rubber pile 495, and the air bag 492 is connected with the flat rubber pile 495 in a sealing manner, i.e. the air bag 492, the upper spring cover plate 491 and the flat rubber pile 495 enclose a sealed cavity, and air can be injected into the air bag 492 or released to adjust the elasticity of the air spring 49.

With continued reference to fig. 17 and 19, the lifting assembly is disposed within the sealed cavity and can serve as a lifting device between the vehicle body and the frame. The lifting assembly comprises a limit stop cover 493 and a limit stop piece 494, the bottom of the limit stop cover 493 is covered and fixed on the flat rubber pile 495, and a gap is kept between the top of the limit stop cover 493 and the upper spring cover plate 491 for the vehicle body to vibrate up and down in the operation. The limit stop piece 494 comprises a limit stop block 4941 and a limit stop connecting rod 4942, and the top of the limit stop cover 493 is provided with a through hole in clearance fit with the limit stop connecting rod 4942; one end of the limit stop connecting rod 4942 passes through the through hole to be connected with the upper spring cover plate 491, and the other end of the limit stop connecting rod 4942 extends into the limit stop cover 493 and is connected with a limit stop block 4941 positioned in the limit stop cover 493; if the limit stop connecting rod 4942 has a force to lift or lower it, the limit stop 4941 can move up and down in the limit stop cover 493.

It can be understood that the gap between the top of the limit stop cover 493 and the upper spring cover plate 491, the gap between the top of the limit stop cover 493 and the limit stop 4941, and the gap between the limit stop 4941 and the flat rubber stack 495 need to be larger than the maximum vertical displacement during the normal operation of the vehicle, so that the air spring can avoid the contact between the limit stop 4941 and the flat rubber stack 495 during the normal operation.

When the limit stop connecting rod 4942 has a lifting acting force, the limit stop block 4941 moves upwards in the limit stop cover 493, and the limit stop block 4941 can abut against the top of the limit stop cover 493 to transmit the acting force to the limit stop cover 493 and to the flat rubber pile 495 through the limit stop cover 493, so that the framework under the vehicle body can be lifted together with the vehicle body.

In the air spring 49 provided by the present embodiment, the lifting assembly is disposed in the sealed cavity defined by the air bag 492, the upper spring cover plate 491 and the flat rubber pile 495, so that not only the air spring 49 has a vibration damping function, but also the vehicle body is connected with the flat rubber pile 495 in the air spring 49 by using the lifting assembly, and the frame connected with the flat rubber pile 495 is connected with the vehicle body, so that the lifting device is disposed between the vehicle body and the frame, and the frame under the vehicle body can be lifted together with the vehicle body.

With reference to fig. 17 to fig. 19, on the basis of the above embodiments, the air spring 49 of the present embodiment further includes a limit stop mounting plate 496, and the limit stop mounting plate 496 may be a rectangular plate. The limit stop mounting plate 496 is fixed on one side of the spring upper cover plate 491 facing the limit stop cover 493, the limit stop mounting plate 496 can be fixed on the spring upper cover plate 491 through bolts, and a gap is reserved between the limit stop mounting plate 496 and the limit stop cover 493 so as to meet the requirements of up-and-down vibration in the running of the vehicle body.

The limit stop mounting plate 496 may be used to fix the limit stop connecting rod 4942, the limit stop mounting plate 496 is provided with a threaded hole, and one end of the limit stop connecting rod 4942 extending out of the limit stop cover 493 is threaded in the threaded hole, so that the limit stop connecting rod 4942 is fixed to the limit stop mounting plate 496.

Referring to fig. 19, further, the other end of the limit stop connecting rod 4942 extends into the limit stop cover 493, and the 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 limiting stop cover 493 comprises a stop cover body 4931, stop cover limiting plates 4932 and stop cover mounting edges 4933, wherein the stop cover limiting plates 4932 are positioned at two ends of the stop cover body 4931; wherein, the bottom of backstop cover body 4931 is provided with the opening, and the opening sets up in dull and stereotyped rubber heap 495 relatively, and the laminating of open-ended terminal surface and the surface of dull and stereotyped rubber heap 495 can make spacing backstop piece 4941 when vertical removal in spacing backstop cover 493, spacing backstop piece 4941 pass the opening can with dull and stereotyped rubber heap 495 butt to spacing backstop piece 4941 carries on spacingly, thereby the too big vertical decurrent displacement of restriction automobile body, the security of improving the vehicle and traveling.

A stop cover mounting edge 4933 is arranged along the circumferential direction of the bottom opening of the stop cover body 4931, and the stop cover mounting edge 4933 is positioned on the outer side of the stop cover body 4931; the stop cover mounting edge 4933 is used to secure the stop cover body 4931 to the flat rubber stack 495. For example, the stopper cover mounting edge 4933 may 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 the bolts so that the flat rubber pile 495 and the stopper cover mounting edge 4933 are fitted and fixed together.

A stop cover limiting plate 4932 is arranged at the top end of the stop cover body 4931, the stop cover limiting plate 4932 can be seen from the bottom plate of the stop cover body 4931, and the stop cover body 4931 and the stop cover limiting plate 4932 are of an integral structure; or, the top end of the retaining cover body 4931 is provided with an opening, and a retaining cover limiting plate 4932 for blocking the opening is arranged on the top end; in this embodiment, the stop cover limiting plate 4932 and the stop cover body 4931 are preferably integrated to enhance the connection strength between the stop cover body 4931 and the stop cover limiting plate 4932. The stopping cover limiting plate 4932 is provided with a through hole for the limiting stopping connecting rod 4942 to pass through, the through hole can be located at the center of the stopping cover limiting plate 4932, and the through hole is in clearance fit with the limiting stopping connecting rod 4942, so that the limiting stopping connecting rod 4942 is inserted into the through hole and can slide vertically.

Referring to fig. 19, further, a limit stop 4941 is disposed in the limit stop cover 4931, and the limit stop 4941 is fixedly connected to one end of a limit stop connecting rod 4942. It can be understood that the limit stop 4941 and the limit stop connecting rod 4942 may be an integral structure to improve the connection strength between the limit stop connecting rod 4942 and the limit stop 4941; the problem that the reliability of the hoisting process is affected due to the fact that the spacing stop connecting rod 4942 is separated from the spacing stop block 4941 in the hoisting process of the framework is solved.

In order to improve the reliability of the hoisting process, a first inclined plane is disposed at the joint of the stop cover limiting plate 4932 and the stop cover body 4931, and the first inclined plane is located at the inner side of the stop cover 493, that is, the first inclined plane can be regarded as a part of the inner surface of the stop cover 493. A second inclined surface is arranged on one side, facing the stop cover limiting plate 4932, of the limiting stop block 4941, the second inclined surface is matched with the first inclined surface, and when the limiting stop block 4941 is lifted up and abuts against the stop cover limiting plate 4932, the first inclined surface is attached to the second inclined surface; the acting force acting between the first inclined surface and the second inclined surface can make the first inclined surface and the second inclined surface better fit, and the stability of the limit stop block 4941 and the limit stop cover 493 in the hoisting process is improved.

Based on the above embodiment, in order to facilitate the installation of the air spring 49 to the frame, the air spring 49 of the present embodiment further includes an under-spring cover plate 497, the under-spring cover plate 497 is located at a side of the flat rubber pile 495 far away from the air bag 492, and the under-spring cover plate 497 can be fixed to the frame by bolts, so as to install the air spring 49 to the frame. It can be understood that the air spring 49 includes an upper spring cover 491, an air bag 492, a flat rubber stack 495 and a lower spring cover 497 which are sequentially arranged, and the upper spring cover 491, the air bag 492, the flat rubber stack 495 and the lower spring cover 497 form an integrated structure, so that the structural strength of the air spring 49 and the tightness of the air bag 492 can be enhanced; at the same time, the installation efficiency of the air spring 49 is also improved.

Further, the under-spring cover plate 497 is further provided with a positioning pin, the positioning pin is located on one side of the under-spring cover plate 497 away from the flat rubber pile 495, and the positioning pin and the under-spring cover plate 497 can form an integrated structure so as to enhance the connection strength between the under-spring cover plate 497 and the positioning pin. The frame is provided with insertion holes that mate with the locating pins, and the lower spring cover plate 497 may be fitted over the upper surface of the frame and fastened together by bolts after the locating pins are inserted into the insertion holes of the frame. So set up, can promote the positioning accuracy between air spring 49 and the framework, guarantee that air spring 49's effort can vertically act on the framework to air spring 49's damping effect.

Example two

The embodiment provides a rubber-tyred train, includes: the first vehicle body and the second vehicle body are arranged opposite to the first vehicle body, and the first vehicle body and the second vehicle body are connected through the trailer bogie according to the first embodiment. According to the rubber-tyred train in the embodiment of the application, the first vehicle body and the second vehicle body which are adjacent to each other are connected through the trailer bogie related to the first embodiment, so that the first vehicle axle and the second vehicle axle can be close to the edge of the train end, and the train end part does not need to be designed to adapt to strong stress structures such as traction force, braking force and the like, so that the design difficulty of the train end part is reduced; meanwhile, the vehicle axle is prevented from occupying the available space of passengers in the end area of the vehicle, and a low floor can be realized.

In addition, the rubber-tyred train of this embodiment is because the first automobile body and the second automobile body that are adjacent are connected through the trailer bogie of above-mentioned embodiment one, consequently can realize the relatively independent control of turning of first trailer wheel and second trailer wheel to be favorable to reducing the turning radius of vehicle, be convenient for the driving of vehicle, promote the flexibility of traveling on the urban road.

Claims

1. A trailer bogie is characterized by comprising a first axle, a second axle and a frame connecting the first axle and the second axle;

the frame comprises a first frame body and a second frame body, wherein the first end of the first frame body is hinged with the first end of the second frame body, and the second end of the first frame body is connected with the first axle;

the second end of the second frame body is connected with the second vehicle axle, and the second frame body and the first frame body rotate mutually;

the trailer bogie further comprises a trailer traction device, the trailer traction device is arranged on one side of the first vehicle axle, which is far away from the first frame body, and one side of the second vehicle axle, which is far away from the second frame body, and is used for connecting the trailer bogie with an adjacent first vehicle body or second vehicle body;

the trailer traction device comprises two first traction assemblies and two second traction assemblies, the two first traction assemblies are parallel to each other, and the two second traction assemblies are obliquely arranged in a splayed shape.

2. The trailer bogie of claim 1, wherein the frame further comprises a slewing support device;

the rotary supporting device comprises a rotary bearing, and the rotary bearing comprises a first rotating body and a second rotating body which rotate mutually;

the first rotating body is connected with the first frame body, and the second rotating body is connected with the second frame body.

3. The trailer bogie of claim 2, wherein the first frame body is provided with a first step hole and forms a first step surface, and the second frame 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 up and down, and the second rotating body is fixed on the second step surface;

the bottom of the first rotating body is embedded in the second rotating body, and the top of the first rotating body protrudes out of the second rotating body and is fixed on the first step surface.

4. The trailer truck of claim 3, wherein the slewing bearing arrangement further comprises a slewing bearing cover plate;

the rotary supporting cover plate is arranged on the first frame body and seals the first step hole.

5. The trailer bogie of any one of claims 2 to 4, further comprising a frame buffering device comprising a first buffer block mount and a second buffer block mount;

first buffer block mounting seats are symmetrically arranged on two sides of the first end of the first frame body, and first buffer blocks are mounted on the first buffer block mounting seats;

second buffer block mounting seats are symmetrically arranged on two sides of the first end of the second frame body, and second buffer blocks are mounted on the second buffer block mounting seats;

when the first frame body and the second frame body rotate by a preset angle, the first buffer block and the second buffer block which are positioned on the same side of the first frame body and the second frame body can be abutted.

6. The trailer bogie of claim 5, wherein the first frame body is provided with a first chock mounting arm for mounting the first chock mounting, the first chock mounting arm extending in a direction coincident with the direction of rotation of the first frame body;

the second support body is provided with a second buffer seat installation arm used for installing the second buffer block installation seat, and the extending direction of the second buffer seat installation arm is consistent with the rotating direction of the second support body.

7. The trailer bogie of claim 6, wherein the first frame body is a split structure comprising a first frame body connecting portion and a first frame body hinge portion;

one end of the first frame body connecting part is connected with the first axle, the other end of the first frame body connecting part is connected with the first frame body hinging part, and one end of the first frame body hinging part, which is far away from the first frame body connecting part, is hinged with the slewing bearing;

the first buffer base mounting arm is positioned on the first frame body hinge part.

8. The trailer bogie of claim 7, wherein the first frame body connecting portion and the first frame body articulation portion are each provided with a hollowed-out structure.

9. The trailer bogie of claim 8, wherein the first frame body is generally triangular or trapezoidal in configuration from the second end to the first end of the first frame body.

10. The trailer bogie of claim 6, wherein the second frame body is a split structure comprising a second frame body coupling portion and a second frame body articulation portion;

one end of the second frame body connecting part is connected with the second axle, the other end of the second frame body connecting part is connected with the second frame body hinging part, and one end of the second frame body hinging part, which is far away from the second frame body connecting part, is hinged with the slewing bearing;

the second cushion base mounting arm is located on the second frame body hinge portion.

11. The trailer bogie of claim 10, wherein the second frame connecting portion and the second frame hinge portion are each provided with a hollowed-out structure.

12. The trailer bogie of claim 11, wherein the second frame body is generally triangular or trapezoidal in configuration from the second end to the first end of the second frame body.

13. A rubber-tyred train, comprising:

a first vehicle body;

a second body disposed opposite the first body, the first and second bodies being connected by a trailer truck as claimed in any one of claims 1 to 12.