阅读说明：本技术 一种用于轨道车辆的转向架及轨道车辆 (Bogie for railway vehicle and railway vehicle ) 是由 郑建科 王伟 吴瑞梅 王波 邵立云 廖胡兵 吕海龙 于 2020-06-22 设计创作，主要内容包括：本申请实施例提供了一种用于轨道车辆的转向架及轨道车辆。转向架,包括：轮对,轮对包括车轴及两个车轮；两个轮对轴箱和两个轴箱用轴承,轴箱用轴承的内圈套接固定在车轴的外周面且位于两个车轮之间；轮对轴箱套接在轴箱用轴承的外圈的外周面,以使车轴能够相对于轮对轴箱转动；永磁直驱电机,设置在两个轮对轴箱之间,永磁直驱电机包括电机外壳,转子和定子；转子套接固定在车轴的外周面以直接驱动车轴,定子和电机外壳固定为一体且套接于转子的外侧,电机外壳与轮对轴箱固定为一体,轴箱用轴承复用为对定子和电机外壳进行支撑的轴承。轨道车辆包括上述转向架。本申请实施例解决了现有的电机直驱转向架结构复杂,且质量较大的技术问题。(The embodiment of the application provides a bogie for a railway vehicle and the railway vehicle. A bogie, comprising: the wheel set comprises an axle and two wheels; the axle box bearing comprises two wheel set axle boxes and two axle box bearings, wherein inner rings of the axle box bearings are fixedly sleeved on the outer peripheral surface of an axle and positioned between two wheels; the wheel-set axle box is sleeved on the outer peripheral surface of the outer ring of the bearing for the axle box so that the axle can rotate relative to the wheel-set axle box; the permanent magnet direct drive motor is arranged between the two wheel set axle boxes and comprises a motor shell, a rotor and a stator; the rotor is fixed on the peripheral surface of the axle in a sleeved mode to directly drive the axle, the stator and the motor shell are fixed into a whole and sleeved on the outer side of the rotor, the motor shell and the wheel set axle box are fixed into a whole, and the bearing for the axle box is a bearing for supporting the stator and the motor shell. The railway vehicle comprises the bogie. The embodiment of the application solves the technical problems that the existing motor direct-drive bogie is complex in structure and large in mass.)

1. A bogie for a railway vehicle, comprising:

the wheel set comprises an axle and two wheels which are fixedly sleeved on the peripheral surface of the axle;

the inner rings of the bearings for the axle boxes are fixedly sleeved on the outer peripheral surface of the axle and are positioned between the two wheels; the wheelset axle box is sleeved on the outer peripheral surface of the outer ring of the axle box bearing so that the axle can rotate relative to the wheelset axle box;

the permanent magnet direct drive motor is arranged between the two wheel set axle boxes and comprises a motor shell, a rotor and a stator;

the rotor is fixedly sleeved on the outer peripheral surface of the axle so as to directly drive the axle, the stator and the motor shell are fixed into a whole and sleeved on the outer side of the rotor, the motor shell and the wheel pair axle box are fixed into a whole, and the bearing for the axle box is reused as a bearing for supporting the stator and the motor shell.

2. The bogie of claim 1, wherein the motor housing is a cylindrical motor housing;

the permanent magnet direct drive motor also comprises two motor end covers, and the motor end covers are provided with end cover shaft holes which penetrate through; the two motor end covers are respectively fixed at two ends of the motor shell, and the axle penetrates through the axle holes of the two end covers and the hollow part of the motor shell;

two the motor end cover is located respectively motor housing and two between the wheel pair axle box, and be located with one side the motor end cover with the wheel pair axle box is fixed, in order to realize motor housing with the wheel pair axle box is fixed as an organic whole, the motor end cover is multiplexing to be the end cover of wheel pair axle box.

3. The truck of claim 2, wherein the motor end cap comprises:

the end cover shaft hole penetrates through the middle of the end cover main body;

the motor end cover flanging is arranged on the outer side of the protruding part; the motor end cover flanging is provided with a motor end cover bolt hole;

the wheel set axle box is provided with an axle box through hole which is sleeved on the outer ring of the bearing for the axle box; one end of the axle box through hole is convexly provided with an axle box flanging, and the axle box flanging is provided with an axle box bolt hole;

the motor end cover and the wheel set axle box are fixed through bolts and nuts, and bolt holes of the motor end cover and bolt holes of the axle box.

4. The bogie according to claim 3, wherein the wall of the end cover shaft hole protrudes from the motor end cover flange as a butt joint protrusion, and the pedestal through hole has a butt joint groove at a side where the pedestal flange is disposed;

and the butt joint of the butt joint bulge and the butt joint groove realizes the alignment of the motor end cover and the wheel pair axle box.

5. The bogie of claim 4, wherein the motor end cap further comprises:

the buckle is in a closed shape connected end to end; the buckle and the motor end cover flanging are respectively arranged on two sides of the end cover main body, which are opposite to each other;

two end faces of the motor shell are respectively provided with a clamping groove;

the two motor end covers and the motor shell are installed in a clamping and matching mode through the buckles and the clamping grooves;

the end cover main body is provided with an end cover main body threaded hole, the motor shell is provided with a motor shell threaded hole matched with the end cover threaded hole, and the end cover main body threaded hole and the motor shell threaded hole are fixedly connected through a bolt.

6. The bogie of claim 5, wherein the motor end cap flange and the pedestal flange each have four lobes, and wherein each of the four lobes are located at four vertices of a rectangular frame;

the number of the axle box bolt holes is four, and the four axle box bolt holes are respectively positioned at four lugs of the axle box flanging;

the number of the motor end cover bolt holes is four, and the motor end cover bolt holes are respectively located at four convex lugs of the motor end cover flanging.

7. The truck of claim 6 wherein the end cap body is a flat cone funnel shaped end cap body;

the motor end cover flanging is arranged at the conical funnel mouth part of the end cover main body, and the buckle is arranged at the edge position of the conical funnel cylindrical structure of the end cover main body.

8. The truck of claim 7 wherein the end cap body is a conical funnel shaped end cap body having a top and bottom edge cut parallel to reduce weight and avoid other components of the truck.

9. The truck of claim 8 further comprising a seal ring;

the end cover main body is provided with sealing ring mounting grooves which are connected end to end and are in a closed shape at the periphery of the end cover shaft hole;

the seal ring is disposed in the seal ring mounting groove to effect sealing between the end cap body and the wheelset axle housing.

10. The bogie of claim 9, wherein the motor housing is a cylindrical motor housing; the end cover shaft hole is located in the middle of the motor end cover.

11. The truck of claim 10 wherein the seal ring mounting groove is an annular seal ring mounting groove;

the clamping groove is an annular clamping groove, and the buckle is an annular buckle.

12. The bogie of claim 11, wherein two wheels fixed to the same axle are symmetrically disposed;

the bearing for the axle box is a rolling bearing.

13. The truck of claim 12 wherein there is an interference fit between the wheel and the axle;

the inner ring of the bearing for the axle box is in interference fit with the axle;

and the rotor and the axle are in interference fit.

14. The bogie of claim 13, further comprising a frame and a primary suspension device; the frame includes:

the side beam comprises two primary mounting parts and a connecting part for connecting the two primary mounting parts; the connecting parts of the two side beams are oppositely sunken in the transverse direction;

a cross member connecting the connecting portions of the two side members;

wherein the primary suspension unit is mounted on the wheelset axle boxes, a primary mounting portion of the side beam is located on the primary suspension unit, and the frame is located on both of the wheelsets.

15. The bogie of claim 14, further comprising two secondary air springs;

the framework further comprises two secondary mounting seats, the two secondary mounting seats are respectively fixed on the outer sides of the middle positions of the connecting parts of the two side beams and protrude out of the two ends of the side beams in the transverse direction;

and the two secondary air springs are arranged on the two secondary mounting seats.

16. The truck of claim 15 further comprising a tread brake;

the frame further comprises two brake device mounting seats, wherein the two brake device mounting seats are fixed at the bottom of the middle position of the connecting part of each side beam and are respectively positioned at two sides of the secondary mounting seat;

wherein the tread brake device is mounted at the brake device mounting seat.

17. The bogie of claim 16, wherein the primary suspension device comprises a spring;

the outer top of the wheel set axle box is provided with two axle box primary mounting interfaces at intervals along the longitudinal direction;

the inner top of the first series of mounting parts of the side beams is provided with two first series of mounting interfaces of the side beams at intervals along the longitudinal direction;

every two of the primary springs are respectively installed with a primary installation interface of two axle boxes of the same wheel pair axle box, and two side beam primary installation interfaces of the primary installation part are located on the two primary springs.

18. The bogie of claim 17, wherein the bottom of the connecting portion of the side beam is provided with two side beam longitudinal mounts;

the wheel set axle box is provided with an axle box longitudinal mounting seat;

the bogie further comprises side longitudinal connecting rods, and two ends of each side longitudinal connecting rod are respectively connected with the longitudinal mounting seat at the axle box and the longitudinal mounting seat at the side beam, so that longitudinal connection of the wheel pair axle box and the framework is realized.

19. The bogie as recited in claim 18, wherein the ends of the side beams have downward bends;

the wheel set axle box is provided with an axle box vertical mounting seat;

the bogie further comprises a vertical lifting crane, wherein the upper end and the lower end of the vertical lifting crane are respectively connected with the inner side of the bending part and the vertical mounting seat at the axle box, so that the wheel pair axle box and the framework are vertically connected.

20. The bogie according to claim 19 wherein there are two of said cross beams, two of said cross beams being parallel to each other, each of said cross beams being provided with a cross beam longitudinal mount;

a motor shell of the permanent magnet direct drive motor is provided with a motor longitudinal mounting seat;

the bogie further comprises an intermediate longitudinal link; and two ends of the middle longitudinal connecting rod are respectively connected with the longitudinal mounting seat at the cross beam and the longitudinal mounting seat at the motor, so that the longitudinal connection between the permanent magnet direct drive motor and the framework is realized.

21. The truck of claim 20 further comprising a traction device and a transverse damper; the traction device is arranged between the two beams, and the two sides of the traction device are provided with the transverse shock absorber seats at the traction device;

the middle position of the connecting part is provided with a transverse shock absorber seat at the connecting part, and two ends of the transverse shock absorber are respectively connected with the transverse shock absorber seat at the traction device and the transverse shock absorber seat at the connecting part, so that the shock absorption of the traction device in the transverse direction is realized.

22. The bogie according to claim 21, wherein the longitudinal connecting rod is provided at both ends thereof with rubber nodes, respectively, and is mounted by bolts and cylindrical nuts;

wherein the longitudinal links include the middle longitudinal link and the side longitudinal links.

23. The bogie of claim 22, wherein the distance between the two axles of the bogie is 1600 mm.

24. A rail vehicle comprising a bogie as claimed in any one of claims 1 to 23.

Technical Field

The application relates to the technical field of railway vehicles, in particular to a bogie for a railway vehicle and the railway vehicle.

Background

A transmission gear box and a coupling are added on the basis of a traction motor in the traditional bogie driving system, and noise and vibration of different degrees can be generated in the meshing process of a gear-driven gear meshing friction pair, a gear coupling and the like; power loss and efficiency reduction can be caused in the transmission process; in addition, the gear engagement friction pair gradually wears, the maintenance cost is increased due to maintenance and replacement, and the quality of the bogie is high.

The motor direct-drive bogie is a bogie which directly transmits the output torque or force of a traction motor to a wheel set by removing a transmission part between the motor and the wheel set of the traditional bogie. The design idea of the bogie is to cancel a gear transmission system of the traditional bogie and adopt a direct drive system without gear transmission, and the direct drive bogie is characterized in that a motor directly drives a wheel pair, and middle links such as a gear transmission mechanism, a motor suspension device and the like are omitted. The existing motor direct-drive bogie is complex in structure and still large in mass.

Therefore, the existing direct-drive motor bogie is complex in structure and large in mass, and is a technical problem which needs to be solved urgently by a person skilled in the art.

The above information disclosed in the background section is only for enhancement of understanding of the background of the present application and therefore it may contain information that does not form the prior art that is known to those of ordinary skill in the art.

Disclosure of Invention

The embodiment of the application provides a bogie for a railway vehicle and the railway vehicle, and aims to solve the technical problems that an existing motor direct-drive bogie is complex in structure and large in mass.

The embodiment of the application provides a bogie for rail vehicle includes:

the wheel set comprises an axle and two wheels which are fixedly sleeved on the peripheral surface of the axle;

the inner rings of the bearings for the axle boxes are fixedly sleeved on the outer peripheral surface of the axle and are positioned between the two wheels; the wheelset axle box is sleeved on the outer peripheral surface of the outer ring of the axle box bearing so that the axle can rotate relative to the wheelset axle box;

the permanent magnet direct drive motor is arranged between the two wheel set axle boxes and comprises a motor shell, a rotor and a stator;

the rotor is fixedly sleeved on the peripheral surface of the axle to directly drive the axle, the stator and the motor shell are fixed into a whole and sleeved on the outer side of the rotor, the motor shell and the wheel pair axle box are fixed into a whole, and the bearing for the axle box is reused as a bearing for supporting the stator and the motor shell.

The embodiment also provides the following technical scheme:

a rail vehicle comprises the bogie.

Due to the adoption of the technical scheme, the embodiment of the application has the following technical effects:

the wheel set axle box setting mode has following characteristics: firstly, two wheel-set axle boxes are fixed between two wheels, and the method belongs to a wheel-set axle box built-in mode; and then, the inner ring of the bearing for the axle box is fixed on the axle, and the wheel-set axle box is sleeved on the outer ring of the bearing for the axle box, namely, the outer ring of the bearing for the axle box plays a supporting role for the wheel-set axle box, so that the wheels, the axle and the inner ring of the bearing for the axle box are fixed together and can rotate relative to the wheel-set axle box. The setting mode of the permanent magnet direct drive motor as the drive motor has the following characteristics: firstly, the way that the rotor is fixed on the axle realizes the way of directly driving the axle, namely the way that the permanent magnet direct drive motor directly drives the axle; secondly, the support required by the stator and the motor shell which are fixed into a whole is realized not by a mode of independently arranging a bearing, but by fixing the motor shell and the wheel-set axle box into a whole, the motor shell is realized, the stator and the wheel-set axle box are fixed into a whole, and the wheel-set axle box is sleeved on the outer ring of the bearing for the axle box, so that the outer ring of the bearing for the axle box also plays a supporting role for the stator and the motor shell, namely the bearing for the axle box is reused as a bearing for supporting the stator and the motor shell. According to the bogie for the railway vehicle, the axle is short in length due to the built-in mode of the wheel set axle box, so that the axle is small in mass; the axle box is with one set of bearing, and the mode of supporting wheel pair axle box and stator and motor housing simultaneously no longer need set up the bearing alone for stator and motor housing alone for the simple structure of bogie, unsprung mass is less, accords with the lightweight development trend of bogie.

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 perspective view of a truck for a rail vehicle according to an embodiment of the present application;

FIG. 2 is a top view of the truck shown in FIG. 1;

FIG. 3 is a side view of the truck shown in FIG. 1;

FIG. 4 is a front view of the truck shown in FIG. 1;

FIG. 5 is a cross-sectional view A-A of the truck shown in FIG. 2;

FIG. 6 is a cross-sectional view B-B of the truck shown in FIG. 2;

FIG. 7 is a perspective view of the bogie of FIG. 2 with the wheel set and the permanent magnet direct drive motor integrally mounted;

FIG. 8 is a perspective view of a motor end cap of the truck shown in FIG. 1;

FIG. 9 is a schematic view of another angle of the motor end cap shown in FIG. 8;

FIG. 10 is a cross-sectional view of the motor end cap C-C shown in FIG. 9;

FIG. 11 is a perspective view of a wheelset axlebox of the truck shown in FIG. 1;

FIG. 12 is a perspective view of another angle of the wheelset axlebox of FIG. 11;

FIG. 13 is a perspective view of the frame of the truck shown in FIG. 1;

FIG. 14 is a top view of the frame of FIG. 12;

FIG. 15 is a side view of the frame of FIG. 12;

FIG. 16 is a front view of the frame of FIG. 12;

fig. 17 is a perspective view of a draft gear of the truck shown in fig. 1.

Description of reference numerals:

11-axle, 12-wheels,

2-wheel pair axle box, 21-axle box through hole, 22-axle box flanging, 221 axle box bolt hole, 23 butt-joint groove,

24-axle box one-line mounting interface, 25-axle box longitudinal mounting seat, 26-axle box vertical mounting seat,

3-a bearing for the axle box,

4-permanent magnet direct drive motor, 41-motor shell, 42-rotor,

43-motor end cover, 431-end cover shaft hole, 432-end cover main body, 432-1 end cover main body threaded hole,

433-flanging of the motor end cover, 433-1 bolt holes of the motor end cover,

434 abutting protrusions, 435-buckles, 436 sealing ring mounting grooves,

437 a longitudinal installation seat at the motor,

5-frame, 51-side beam, 511-series mounting part, 511-1 side beam-series mounting interface,

512-connecting part, 513-longitudinal mounting seat at side beam, 514-bending part,

515-transverse damper seat at the connection, 516-brake device mounting seat,

52-beam, 521-beam longitudinal mounting seat, 53-secondary mounting seat,

61-primary spring, 62-secondary air spring,

71-side longitudinal connecting rods, 72-vertical lifting hooks, 73-middle longitudinal connecting rods,

81-traction device, 811-transverse damper seat at traction device, 82-transverse damper.

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.