CN111348066B

CN111348066B - Framework, bogie and rail vehicle

Info

Publication number: CN111348066B
Application number: CN201811561689.XA
Authority: CN
Inventors: 裴鹏; 王俊锋; 尹文龙; 张鹏; 楚伯刚; 张先令; 赵锋
Original assignee: CRRC Tangshan Co Ltd
Current assignee: CRRC Tangshan Co Ltd
Priority date: 2018-12-20
Filing date: 2018-12-20
Publication date: 2021-07-30
Anticipated expiration: 2038-12-20
Also published as: CN111348066A

Abstract

The embodiment of the application provides a framework, bogie and rail vehicle, wherein, the framework includes: a cross beam extending in a transverse direction; a connection beam extending in a longitudinal direction; the number of the connecting beams is at least two, and the at least two connecting beams are symmetrically arranged on two sides of the cross beam along the longitudinal direction; the first end of the connecting beam is connected with the cross beam, and the second end of the connecting beam is used for being connected with an axle box in the wheel pair. The framework that this application embodiment provided is less, and weight is lighter, is favorable to alleviateing rail vehicle's dead weight.

Description

Framework, bogie and rail vehicle

Technical Field

The application relates to a vehicle running technology, in particular to a framework, a bogie and a rail vehicle.

Background

The rail vehicle is an important traffic tie connecting cities, is gradually a main vehicle in the cities, and is also a main carrier for realizing goods transportation. The rail vehicle mainly includes: the bogie is used for bearing the vehicle body and realizing walking and steering functions.

The bogie generally comprises: the wheel set comprises an axle, wheels and an axle box, the two wheels are symmetrically and fixedly arranged on the axle, two ends of the axle are respectively connected with the axle box through bearings, the axle box is connected with the framework through a primary suspension and positioning device, and the framework is connected with a vehicle body through a secondary suspension and traction device. The frame is the core skeleton of bogie, and traditional frame comprises two parallel arrangement's curb girder and the crossbeam of connecting between two curb girders, and two curb girders and crossbeam connect into "H" shape. The side beam is large in size, two ends of the side beam extend to the upper portion of the axle box along the longitudinal direction, and the primary suspension is arranged between the side beam and the axle box along the vertical direction. The side beam with larger volume also has larger weight, thereby increasing the weight of the bogie.

Disclosure of Invention

The embodiment of the application provides a framework, bogie and rail vehicle, and the volume of framework wherein is less, and weight is lighter, is favorable to alleviateing rail vehicle's dead weight.

An embodiment of a first aspect of the present application provides a framework, including:

a cross beam extending in a transverse direction;

a connection beam extending in a longitudinal direction; the number of the connecting beams is at least two, and the at least two connecting beams are symmetrically arranged on two sides of the cross beam along the longitudinal direction; the first end of the connecting beam is connected with the cross beam, and the second end of the connecting beam is used for being connected with an axle box in the wheel pair.

An embodiment of the second aspect of the present application provides a bogie, including: a framework as described above.

An embodiment of a third aspect of the present application provides a rail vehicle, including: a bogie as described above.

The technical scheme that this application embodiment provided is totally different with the framework of traditional bogie, and the tie-beam in the framework that this embodiment provided need not to link to each other with the axle box through a series of suspension, but directly link to each other with the outer wall of axle box can, therefore the volume of tie-beam can be done less, as long as can satisfy the support intensity to the automobile body can, its weight also is far less than the curb girder of traditional bogie, is favorable to reducing the weight of bogie, alleviates rail vehicle's dead weight.

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 structural diagram of a framework according to an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a bogie according to a first embodiment of the present invention;

FIG. 3 is a schematic view of another angle of the bogie according to an embodiment of the present application;

FIG. 4 is an exploded view of the frame and axlebox assembly in a truck according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a wheel pair provided in the first embodiment of the present application;

FIG. 6 is an exploded view of a wheel set according to one embodiment of the present application;

FIG. 7 is a schematic diagram of an axle box of a bogie according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a cushion ring in a bogie according to an embodiment of the present invention;

FIG. 9 is a schematic view of a series of cushion rings assembled in an axle housing according to an embodiment of the present invention;

FIG. 10 is a partial cross-sectional view of a wheel set provided in accordance with an embodiment of the present application;

FIG. 11 is an exploded view of a truck according to one embodiment of the present application;

FIG. 12 is an exploded view of a draft gear according to an embodiment of the present application;

fig. 13 is a schematic structural diagram of a bogie provided with a driving motor according to a first embodiment of the present application;

fig. 14 is an exploded view of a drive motor and wheel set provided in accordance with an embodiment of the present disclosure;

fig. 15 is a schematic view of an assembly of a driving motor and a wheel set provided in the first embodiment of the present application.

Reference numerals:

1-a cross beam; 11-a tie rod connection; 111-a second pivot hole; 12-a brake lifting seat; 13-motor connecting seat; 14-a traction groove; 15-a secondary mount;

2-connecting the beams; 21-a linker arm; 211 — a first bolt hole; 22-a connector; 221-a first pivot; 222-a support base; 23-a bolt; 24-a nut;

31-axle; 32-a wheel; 33-axle boxes; 331-a first connection; 3311-a first pivot hole; 332-a second connection; 3321-third pivot hole; 34-a buffer ring; 341-outer ring; 342-an intermediate ring; 343-inner ring; 35-a bearing; 36-shaft end cap; 37-a brake disc;

4-positioning the pull rod; 41-a second pivot; 42-a third pivot; 43-abdication through holes;

5-braking the clamp;

6-a traction device; 61-center pin; 62-pulling the rubber pile; 621-a receiving hole; 63-pressing plate;

7-an air spring;

8-driving a motor; 81-motor housing; 811-a connecting socket; 82-a stator; 83-a rotor; 84-connecting rod.

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 the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Example one

The present embodiment provides a framework that can be applied to a bogie of a railway vehicle. The rail vehicle can be a diesel locomotive, an electric locomotive, a motor train unit, a subway, a light rail, a tramcar and the like. The framework that this embodiment provided has lighter dead weight, and then can alleviate the automobile body dead weight, improves traction efficiency.

Fig. 1 is a schematic structural diagram of a framework according to an embodiment of the present application. As shown in fig. 1, the present embodiment provides a framework including: a crossbeam 1 and a connecting beam 2. Wherein the cross beam 1 extends in the transverse direction and the connecting beam 2 extends in the longitudinal direction. The transverse direction is the left-right direction of the rail vehicle, and the longitudinal direction is the traveling direction of the rail vehicle. The vertical direction mentioned later is a vertical direction, that is, an up-down direction.

The number of the connecting beams 2 is at least two, and the at least two connecting beams 2 are symmetrically arranged on two sides of the cross beam 1 along the longitudinal direction. The connecting beam 2 has two ends, called: a first end connected to the cross beam 1 and a second end for connection to the axle boxes of the wheel pairs. The cross beam 1 is used to carry the weight of the vehicle body, which is also transmitted to the axle boxes via the connecting beam 2.

In the conventional bogie, the end of the side member extends above the axle box and is connected to the axle box by a suspension, so that the side member needs to be sized to meet the requirements of a suspension assembly, resulting in a large size and weight of the side member.

The technical scheme that this embodiment provided is totally different with the framework of traditional bogie, and the tie-beam in the framework that this embodiment provided need not to link to each other with the axle box through a system hangs, but directly links to each other with the outer wall of axle box, therefore the volume that the tie-beam can be done is less, as long as can satisfy the support intensity to the automobile body can, its weight is also far less than the curb girder of traditional bogie, is favorable to reducing the weight of bogie, alleviates rail vehicle's dead weight.

In order to explain the framework provided by the embodiment in detail, the embodiment also exemplifies an implementation manner of the bogie.

Fig. 2 is a schematic structural diagram of a bogie provided in the first application embodiment. As shown in fig. 2, the bogie includes: the wheel set is connected with the frame through the wheel set. The number of the wheel pairs is two, and the wheel pairs are symmetrically arranged on two sides of the cross beam 1 along the longitudinal direction. The wheel pair specifically includes: an axle 31, wheels 32, and axle boxes 33. Wherein the axle 31 extends in the transverse direction, namely: the axis of the axle 31 is parallel to the cross member 1. Two wheels 32 are symmetrically provided on one axle 31. The axle is also provided with an axle box 33, and the axle box 33 is connected to the axle 31 via a bearing so that the axle 31 can rotate relative to the axle box 33.

In the prior art, the axle boxes are limited to be connected with the frame through a series of suspensions, and the axle boxes can be arranged on the outer side of the wheels. With the above-described configuration provided in the present embodiment, the axle boxes 33 may be disposed on the outer sides of the wheels 32, or may be disposed on the inner sides of the wheels 32. The following describes in detail how the frame is implemented, taking as an example the case where the axle boxes 33 are provided inside the wheels 32. The axle boxes 33 are located on the inner side of the wheels 32, namely: between the two wheels 32.

The outer wall of the axle box 33 is provided with a first connection portion having a vertical height higher than the axis of the axle 31, that is: the first connection portion is located above the axis of the axle box 33.

The first end of the connecting beam 2 is connected with the cross beam 1, and the second end is connected with the first connecting part on the axle box 33, so that the connection between the cross beam 1 and the wheel pair is realized. The weight of the vehicle body is applied to the cross member 1, and is transmitted to the axle boxes 33 via the connecting beams 2 and then to the wheels 32 via the axles 31.

The connecting beam 2 is in a strip-shaped structure, can be in a linear type, and also can have a certain radian. The tie-beam 2 can produce certain deformation in vertical direction, plays bow spring's effect, and the vibration of wheel pair cushions, reduces the vibration of automobile body.

Four connecting beams 2 are arranged on the bogie shown in fig. 2, two connecting beams 2 are symmetrically arranged on one side of the cross beam 1, and the other two connecting beams 2 are symmetrically arranged on the other side of the cross beam 1. Correspondingly, two axle boxes 33 are symmetrically arranged on each axle 31, and the axle boxes 33 are connected with the corresponding connecting beams 2. The weight of the vehicle body is evenly distributed on the four wheels 32, so that the force applied to the rail by each wheel 32 is kept stable, the riding comfort can be improved, and the phenomenon of 'wheel weight load shedding' that the vertical load transferred from the wheels 32 to the rail is reduced when the vehicle runs on a curved rail or a rail with an irregular track can be inhibited, and the vehicle is not easy to derail.

Two ends of the connecting beam 2 are respectively fixedly connected with the cross beam 1 and the axle box 33; or, two ends of the connecting beam 2 are respectively pivoted with the cross beam 1 and the axle box 33; or the first end of the connecting beam 2 is fixedly connected with the axle box 33, and the second end is pivoted with the cross beam 1; or, the first end of the connecting beam 2 is fixedly connected with the cross beam 1, and the second end is pivoted with the axle box 33.

Fig. 3 is another schematic angle view of a bogie according to an embodiment of the present application. In fig. 3, the wheels 32 are removed to clearly show the connection of the axleboxes 33 to the connecting beam 2. As shown in fig. 3, in the present embodiment, the first end of the connecting beam 2 is fixedly connected to the cross beam 1, and the second end is provided with a pivot portion, which is pivoted to the axle box 33, so that the axle box 33 can rotate a certain angle relative to the connecting beam 2. When the cross beam 1 is subjected to variable load, relative rotation can be generated between the cross beam and the axle boxes 33, so that the stress of the four wheels 32 is balanced.

The embodiment provides a specific implementation manner of the connection beam 2:

fig. 4 is an exploded view of the assembly of the frame and the axle box in the bogie according to an embodiment of the present invention. As shown in fig. 1 and 4, the connection beam 2 includes: connecting arm 21 and connecting piece 22. One end of the connecting arm 21 is fixedly connected to the beam 1, and the other end is provided with the pivot portion, through which the connecting arm is connected to the connecting member 22. The link 22 is pivotally connected to the first connection 331 of the axle housing 33.

As for the connection manner between the connection arm 21 and the connection member 22, there are various means such as: a receiving space for receiving the connecting arm 21 is provided in the connecting piece 22, which is open toward the connecting arm 21. The connecting arm 21 can be inserted into the receiving cavity and is fixedly connected with the connecting piece 22. Specifically, the first bolt holes 211 are provided in the connecting arm 21, and the number of the first bolt holes 211 may be two or more. A second bolt hole (not marked in the figure) is correspondingly formed in the side wall of the accommodating cavity. The connecting arm 21 is inserted into the receiving hole so that the first bolt hole 211 and the second bolt hole are aligned, and fixed by a bolt 23 passing through the first bolt hole 211 and the second bolt hole and fitting a nut 24.

Alternatively, the connection structure of the connecting arm 21 and the connecting member 22 may be interchanged, that is: a receiving cavity is provided on the connecting arm 21, and the connecting member 22 is inserted into the receiving cavity of the connecting arm 21 for connection.

Besides the above-mentioned methods, the connecting arm 21 and the connecting member 22 can be fixed by clamping, welding, riveting, etc.

For the implementation of the pivot connection between the connecting element 22 and the axle housing 33, various means can be used, for example the following:

the first connecting portion 331 is formed with a first pivot hole 3311, and a center line of the first pivot hole 3311 is parallel to a center line of the axle box 33. The end of the connecting member 22 is provided with a pivot portion including: two supporting seats 222 and a first pivot 221 connected between the two supporting seats 222. The first pivot 221 can be fitted in the first pivot hole 3311 to connect the connecting member 22 to the first connecting portion 331, and the connecting member 22 can rotate relative to the first connecting portion 331.

Besides the above solutions, a pivot may be disposed on the first connection portion 331, and a pivot hole is disposed on the connection member 22 correspondingly, so as to realize the pivotal connection between the connection member 22 and the first connection portion 331.

In addition to the above-described implementation, the connection beam 2 can also be implemented in other ways, such as: the connecting beam 2 is an integral beam, one end of which is fixedly connected with the cross beam 1, and the other end of which is pivoted with the axle box 33.

As shown in fig. 2 to 4, in addition to the above technical solutions, a positioning tie rod 4 may be connected between the cross beam 1 and the axle box 33 to position the wheel pair. The axle box 33 is further provided with a second connecting portion 332 on the outer wall thereof, and the vertical height of the second connecting portion 332 is lower than the axis of the axle 31, which corresponds to the second connecting portion 332 located below the axis of the axle box 33. One end of the positioning pull rod 4 is connected to the cross beam 1, and the other end is connected to the second connecting portion 332.

In this embodiment, two ends of the positioning rod 4 are pivotally connected to the cross beam 1 and the axle box 33, and specifically, two ends of the positioning rod 4 are provided with a second pivot 41 and a third pivot 42, respectively. Correspondingly, a tie rod connection 11 is provided on the cross beam 1, a second pivot hole 111 is provided on the tie rod connection 11, and a second pivot 41 can be fitted into the second pivot hole 111 to enable the positioning tie rod 4 to rotate relative to the cross beam 1. A third pivot hole 3321 is provided on the second connecting portion 332 of the axle box 33, and a third pivot 42 may be fitted into the third pivot hole 3321 to allow the tie rod 4 to rotate with respect to the axle box 33.

In addition to the above, the positioning rod 4 may be provided with a pivot hole, and a pivot may be provided in the cross beam 1 or the axle box 33, so that the positioning rod 4 and the cross beam 1 or the axle box 33 may be pivotally connected.

The axle box 33, the connecting beam 2 and the positioning pull rod 4 form a triangular connecting structure, so that the stability is good. Moreover, when the weight of the vehicle body is loaded on the cross beam 1, the cross beam 1 drives the axle box 33 to rotate (in fig. 4, the axle box 33 rotates clockwise) through the connecting beam 2, when the axle box rotates to a certain angle, the positioning pull rod 4 limits the axle box 33, the axle box 33 is limited from continuing to rotate, and then the wheel set can be restrained from shaking relative to the cross beam 1, and particularly the critical speed when the snake-shaped motion occurs can be controlled.

Further, the connecting beam 2 has a vertical height at the first end lower than that at the second end. The pull rod connecting part 11 is arranged at the joint of the cross beam 1 and the connecting beam 2 and is positioned on the top surface of the cross beam 1. The positioning rod 4 is provided with a relief through hole 43 through which the connection beam 2 passes, and the connection beam 2 passes upward through the relief through hole 43 and then is connected to the first connection portion 331 at the upper portion of the axle box 33.

The positioning pull rod 4 is of an arched structure which is arched upwards as a whole and has higher strength.

The cross beam 1 and the connecting beam 2 may be an integrally formed structure. The whole framework including the cross beam 1 and the connecting beam 2 can be made of carbon fiber materials, so that the flexibility of the whole framework is increased, and the transmission of vibration between wheel rails to a vehicle body is attenuated.

In the mode in which the axle boxes 33 are disposed outside the wheels 32, only the positions at which the connecting beam 2 and the tie rods 4 are connected to the cross beam 1 need be changed, which corresponds to the positions at which the connecting beam 2 and the tie rod connecting portions 11 in fig. 1 are moved to both ends of the cross beam 1 by the corresponding distances, so that the axle boxes 33 are externally disposed.

On the basis of the above technical solution, this embodiment provides an implementation manner of a wheel set:

fig. 5 is a schematic structural diagram of a wheel set provided in the first embodiment of the present application, and fig. 6 is an exploded view of the wheel set provided in the first embodiment of the present application. As shown in fig. 2, 5, and 6, the wheels 32 are symmetrically disposed on the axle 31, and the axle boxes 33 are symmetrically disposed inside the wheels 32.

As shown in fig. 3 and 4, the wheel set further comprises: a cushion ring 34 provided between the bearing and the axle box 33 for cushioning vibration of the wheel 32 and preventing the vibration of the wheel 32 from being transmitted to the axle box 33.

Fig. 7 is a schematic structural diagram of an axle box in a bogie according to a first embodiment of the present application, fig. 8 is a schematic structural diagram of a series of cushion rings in a bogie according to a first embodiment of the present application, and fig. 9 is a schematic structural diagram of a series of cushion rings assembled in an axle box according to a first embodiment of the present application. As shown in fig. 7 to 9, a series of buffer rings 34 includes: an outer ring 341, an intermediate ring 342 and an inner ring 343 arranged in this order from the outside to the inside. The outer ring 341 may be made of metal, the inner ring 343 may also be made of metal, and the intermediate ring 342 is made of a material having certain elasticity, for example: the rubber ring is made of rubber. The outer ring 341, the intermediate ring 342 and the inner ring 343 may be manufactured through a vulcanization process. The rubber ring has high internal resistance and can absorb impact and high-frequency vibration to reduce noise.

Compared with a rigid linear spring which can only bear load in a single direction and is adopted in the primary suspension in the related art, the primary buffer ring 34 adopted in the embodiment can bear multi-directional load, and the buffer effect can be achieved by only adopting the primary buffer ring 34, so that the number of parts is reduced, and the structure of the bogie is simplified.

Fig. 10 is a partial cross-sectional view of a wheel set provided in accordance with an embodiment of the present application. As shown in fig. 10, the outer ring 341 is in interference fit with the axle housing 33, and the inner ring 343 is in clearance fit with the outer ring of the bearing 35. The inner race of the bearing 35 is in interference fit with the axle 31.

The wheels 32 are in interference fit with the axle 31. The axle 31 can be a hollow shaft, which is beneficial to reducing the weight of the wheel pair. The axle cover 36 is provided on the outer side of the wheel 32, the axle cover 36 is fixed to the end of the axle 31 by bolts, and the axle cover 36 can provide a sealing effect for the hollow axle 31 and prevent foreign materials such as dust from entering the hollow cavity of the axle 31.

The primary cushion ring 34 serves as a primary suspension and can cushion vibrations of the wheel rail. Fig. 11 is an exploded view of a bogie according to an embodiment of the present application. As shown in fig. 11, the secondary suspension includes an air spring 7 provided on the cross member 1, and the air spring 7 is connected to the vehicle body above the vehicle body, and functions to support the vehicle body and reduce vibration transmitted to the vehicle body.

As shown in fig. 1, two secondary mounting seats 15 for mounting the air springs 7 are symmetrically arranged on the cross beam 1, and two air springs 7 are respectively arranged on the two secondary mounting seats 15.

In the bogie, the vertical load transfer path of the vehicle body is as follows: the vehicle comprises a vehicle body, air springs 7, a cross beam 1, a connecting beam 2, axle boxes 33, a series of buffer rings 34, bearings 35, axles 31, wheels 32 and rails. The vibration of the wheel rail is transmitted in the opposite direction, so that the vibration of the vehicle body can be reduced, and the riding comfort is improved.

In the case where the axle boxes 33 are disposed outside the wheels 32, the axle boxes 33 are disposed outside the wheels 32. The axle boxes 33 and the wheels 32 are mounted on the axle 31 in a manner that can be achieved by incorporating the axle boxes 33 as described above.

In addition, as shown in fig. 1 to 4, the middle of the cross beam 1 is provided with a traction groove 14 for accommodating the traction device 6. Fig. 12 is an exploded view of a draft gear according to an embodiment of the present application. As shown in fig. 12, the traction device 6 includes: a center pin 61, a traction rubber stack 62 and a pressure plate 63. The traction rubber pile 62 is fixed between two pressing plates 63 and is fixed together with the pressing plates 63. The traction rubber pile 62 is centrally provided with a receiving hole 621 for receiving the center pin 61, the bottom end of the center pin 61 is inserted into the receiving hole 621, and the top end of the center pin 61 is attached to the vehicle body.

The traction device is used for transmitting traction force and braking force to the vehicle body. Longitudinal forces during vehicle operation are transmitted by longitudinal deformation of the traction rubber piles 62, lateral forces are transmitted by lateral deformation of the traction rubber piles 62, and gyroscopic damping during vehicle operation is provided by deflection compression of the traction rubber piles 62. The traction device provided by the embodiment has a simpler structure and higher reliability.

As shown in fig. 1, 3, 4 and 11, a brake hanger 12 may be further provided on the cross beam 1 for mounting the brake caliper 5. Accordingly, as shown in fig. 5, 6 and 11, a brake disk 37 is provided on the axle 31, and the brake caliper 5 clamps the brake disk 37 in a braking state to perform braking.

Two brake discs 37 are symmetrically arranged on one axle 31, and four brake hanging seats 12 are correspondingly arranged on the cross beam 1 and are respectively connected with one brake clamp 5.

The bogie provided above may be used as a non-powered bogie.

For a power bogie, a motor hanger may be provided on the cross beam 1 instead of the brake hanger 12 described above. The motor hanging seat is used for assembling the driving motor. The driving motor is connected with the axle 31 through a gear box and is used for driving the axle 31 to rotate.

The present embodiments also provide an implementation of a power truck,

fig. 13 is a schematic structural diagram of a bogie provided with a driving motor according to a first embodiment of the present disclosure, fig. 14 is an exploded view of the driving motor and a wheel set according to the first embodiment of the present disclosure, and fig. 15 is a schematic diagram of an assembly of the driving motor and the wheel set according to the first embodiment of the present disclosure. Fig. 15 is a schematic diagram, fig. 15 is only used for illustrating the assembly manner of the driving motor and the wheel set, and other components which are not directly connected with the driving motor are all schematically illustrated.

As shown in fig. 13 to 15, the axle 31 is provided with the driving motor 8, and the driving motor 8 is a direct drive motor and directly drives the axle 31 to rotate without using a gear box. Specifically, the drive motor includes: motor housing 81, stator 82 and rotor 83.

Wherein, be equipped with the motor cavity who is used for holding stator 82 and rotor 83 in the motor housing 81, the axial both ends of motor housing 81 respectively are equipped with the trompil with motor cavity intercommunication. The axle 31 passes through the opening at one end of the motor housing 81 and passes through the opening at the other end, which is equivalent to the motor housing 81 being sleeved on the axle 31.

The stator 82 is fixed to the inner wall of the motor housing 81. The rotor 83 is located in the middle of the stator 82, and the rotor 83 is connected to the axle 31 to rotate in synchronization with the axle 31. Specifically, the rotor 83 may be interference fit with the axle 31.

A connecting seat 811 for connecting with a bogie frame is arranged on the outer wall of the motor housing 81, and the connecting seat 811 is connected with a framework, in particular with the cross beam 1, through a connecting rod 84. Set up motor connecting seat 13 on crossbeam 1, the one end of connecting rod 84 is articulated with motor connecting seat 13, and the other end is articulated with connecting seat 811 for motor connecting seat 13 keeps relatively fixed with crossbeam 1 relative position on longitudinal direction. During the running process of the vehicle, the vibration of the wheels 32 can drive the driving motor 8 to generate a small amount of displacement in the vertical direction, and the displacement can be adjusted through the connecting rods 84 respectively hinged with the motor shell 81 and the cross beam 1, so that the deformation or the fracture of the connecting rods 84 is avoided.

A bearing is arranged between the motor housing 81 and the axle 31, so that the motor housing 81 and the stator 82 are fixed, and the rotor 83 drives the axle 31 to rotate.

In the case where the axle boxes 33 are disposed outside the wheels 31, one bearing is disposed at each of the two axial ends of the motor housing 81, and the inner ring of the bearing may be in interference fit with the axle 31 while the outer ring of the bearing is in clearance fit with the motor housing 81.

In the case where the axle boxes 33 are provided inside the wheels 31, one bearing is provided at each of the two axial ends of the motor housing 81, and the inner ring of the bearing may be in interference fit with the axle 31 while the outer ring of the bearing is in clearance fit with the motor housing 81. Alternatively, the configuration shown in fig. 15 of the present embodiment may be adopted: the motor housing 81 may be connected to the axle housing 33. For example: the motor housing 81 may be of unitary construction with the axle housing 33. Alternatively, both axial ends of the motor housing 81 are inserted between the bearing 35 and a series of cushion rings 34. The bearing 35 is shared by the drive motor 8 and the axle box 33, so that the number of the bearings 35 is reduced, and the weight of the wheel pair is favorably reduced. Meanwhile, a series of buffer rings 34 are disposed outside the motor housing 81 without affecting the gap between the motor stator 82 and the rotor 83. Meanwhile, the transmission of the wheel rail vibration to the framework can be slowed down.

The output rotating speed of the driving motor 8 is adapted to the rotating speed of the axle 31, a gear box is not needed, the weight of the bogie can be reduced, the self weight of the railway vehicle body can be reduced, and the driving efficiency is improved.

The driving motor 8 is used for directly driving the axle 31 to rotate, and is connected with the cross beam 1 through the axle box 33, and the motor housing 81 is connected with the cross beam 1 to transmit traction force so as to drive the railway vehicle to run. During the running of the railway vehicle, the axle 31 can be braked by controlling the drive motor 8 to rotate in reverse.

Example two

The present embodiments provide a bogie including: the architecture as provided above.

The connecting beam in the bogie provided by the embodiment is not required to be connected with the axle box through a primary suspension, but is directly connected with the outer wall of the axle box, so that the volume of the connecting beam can be smaller, the supporting strength of a vehicle body can be met, the weight of the connecting beam is far smaller than that of a side beam of a traditional bogie, the weight of the bogie is favorably reduced, and the self weight of a railway vehicle is reduced.

The present embodiment also provides a rail vehicle, including: such as the bogie, has the same technical effects as the bogie.

In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A frame, comprising:

a cross beam extending in a transverse direction;

a connection beam extending in a longitudinal direction; the number of the connecting beams is at least two, and the at least two connecting beams are symmetrically arranged on two sides of the cross beam along the longitudinal direction; the first end of the connecting beam is connected with the cross beam, and the second end of the connecting beam is used for being connected with an axle box in the wheel pair; the vertical height of the first end of the connecting beam is lower than that of the second end, the second end is used for being connected with a first connecting part on the axle box, and the vertical height of the first connecting part is higher than the axis of the axle box;

positioning the pull rod; one end of the positioning pull rod is connected with the cross beam, the other end of the positioning pull rod is used for being connected with the axle box, and the position where the positioning pull rod is connected with the axle box is lower than the axis of the axle box; the cross beam is provided with a pull rod connecting part, and the pull rod connecting part is arranged at the joint of the cross beam and the connecting beam and is positioned on the top surface of the cross beam; and the positioning pull rod is provided with a yielding through hole for the connecting beam to pass through.

2. The frame of claim 1, wherein the second end of the connecting beam is provided with a pivot portion for pivoting with the axle housing via the pivot portion.

3. The truss of claim 2 wherein the connecting beam includes:

the connecting arm is fixedly connected with the cross beam;

and one end of the connecting piece is connected with the connecting arm, and the other end of the connecting piece is provided with the pin joint part.

4. The frame of claim 3, wherein the pivot connection comprises:

two supporting seats; and

a first pivot connected between the two supports.

5. The framework of claim 3 or 4,

a first bolt hole is formed in the connecting arm;

an accommodating cavity which faces the opening of the connecting arm and is used for accommodating the connecting arm is formed in the connecting piece; the lateral wall that holds the chamber be equipped with can with first bolt hole carries out bolted connection's second bolt hole.

6. The frame of claim 1, wherein the tie bar is pivotally connected to the cross member.

7. The frame of claim 6, wherein the end of the positioning tie for connection to the cross-beam is provided with a second pivot;

the pull rod connecting part is provided with a second pivot hole for a second pivot to pass through.

8. A frame according to claim 1, 6 or 7, characterized in that the end of the positioning link intended for connection to an axlebox is provided with a third pivot for pivoting with the axlebox via the third pivot.

9. A framework as defined in claim 1, wherein said tie rods are of an upwardly arched, arched configuration.

10. The truss of claim 1 further comprising:

and the braking hanging seat is arranged on the cross beam.

11. The truss of claim 1 further comprising:

and the motor hanging seat is arranged on the cross beam.

12. The truss of claim 1 wherein the cross beams and connecting beams are a unitary structure.

13. The frame of claim 1, wherein the cross beams and connecting beams are made of a carbon fiber material.

14. A bogie, comprising: the framework of any of claims 1-13.

15. A rail vehicle, comprising: a bogie as claimed in claim 14.