Bogie assembly and straddle-type monorail vehicle having same

Patent metadata

Field	Value
Publication number	US-11247703-B2
Application number	US-201716334918-A
Country	US
Kind code	B2
Filing date	Feb 28, 2017
Priority date	Sep 21, 2016
Publication date	Feb 15, 2022
Grant date	Feb 15, 2022

Abstract

The present disclosure provides a bogie assembly and a straddle-type monorail vehicle with the same. The bogie assembly comprises: a bogie frame; an electric assembly which is mounted on the bogie frame and comprises a traction motor, a gear reducer and a planetary wheel-side reducer, wherein the traction motor is connected with an input shaft of the gear reducer, and an output shaft of the gear reducer is connected with an input end of the planetary wheel-side reducer; and a running wheel which is mounted on the bogie frame, wherein an output end of the planetary wheel-side reducer is connected with a hub of the running wheel.

First claim

What is claimed is:

1. A bogie assembly, comprising:
a bogie frame;
an electric assembly mounted on the bogie frame, the electric assembly comprising a traction motor, a gear reducer and a planetary wheel-side reducer, the traction motor being connected with an input shaft of the gear reducer, and an output shaft of the gear reducer being connected with an input end of the planetary wheel-side reducer;
a traction frame straddling across the bogie frame along a front-rear direction and covering the electric assembly;
a running wheel mounted on the bogie frame, and an output end of the planetary wheel-side reducer being connected with a hub of the running wheel; and
a suspension system comprising
a suspension mounting seat suitable to be connected with a vehicle body,
a transverse shock absorber connected between the suspension mounting seat and the bogie frame,
a longitudinal shock absorber connected between the suspension mounting seat and the bogie frame, and
an elastic member connected between the suspension mounting seat and the bogie frame.

2. The bogie assembly according to claim 1 , wherein the electric assembly comprises:
a brake disposed between the traction motor and the running wheel or between the gear reducer and the hub of the running wheel.

3. The bogie assembly according to claim 2 , wherein the brake comprises:
a brake disc connected with the hub of the running wheel;
brake calipers connected with a box body of the gear reducer; and
a brake driving unit driving the brake calipers.

4. The bogie assembly according to claim 1 , wherein
the electric assembly is disposed on an inner side of the bogie frame, or
the traction motor is transversely disposed.

5. The bogie assembly according to claim 4 , wherein the traction motor is connected with a box body of the gear reducer, and the box body of the gear reducer is connected with the bogie frame.

6. The bogie assembly according to claim 1 , wherein the traction frame is connected with a traction pin assembly, and the traction pin assembly is suitable to be connected with a vehicle body.

7. The bogie assembly according to claim 6 , wherein the traction pin assembly comprises
a pin shaft connected with a top wall of the traction frame, an upper end of the pin shaft having a flange, and the flange being suitable to be connected with the vehicle body.

8. The bogie assembly according to claim 7 , wherein
the top wall of the traction frame has a mounting hole,
the pin shaft has a threaded segment, and
the pin shaft penetrates through the mounting hole, and the threaded segment is fixed on the traction frame through a nut.

9. The bogie assembly according to claim 8 , wherein the traction pin assembly comprises:
a bushing sleeved over the pin shaft;
an upper shock absorbing pad clamped between the flange and an upper surface of the top wall of the traction frame; and
a lower shock absorbing pad clamped between the nut and a lower surface of the top wall of the traction frame.

10. The bogie assembly according to claim 9 , wherein the bushing comprises an outer steel bushing, an inner steel bushing, and a buffer bushing between the outer steel bushing and the inner steel bushing.

11. The bogie assembly according to claim 6 , wherein the traction pin assembly comprises:
a pin shaft connected with a top wall of the traction frame; and
a vehicle body connecting member having a rigidity in a front-rear direction and a rigidity in a left-right direction, such that the rigidity in the front-rear direction is greater than the rigidity in the left-right direction, wherein the vehicle body connecting member comprises:
a pin bushing mounting seat suitable to be connected with the vehicle body; and
a pin bushing connected with the pin bushing mounting seat and sleeved over the pin shaft.

12. The bogie assembly according to claim 11 , wherein the pin bushing mounting seat comprises:
a fixing cylinder sleeved over the pin bushing, and a buffer member arranged between the fixing cylinder and the pin bushing; and
a mounting plate connected with the fixing cylinder and suitable to be connected with the vehicle body.

13. The bogie assembly according to claim 12 , wherein the fixing cylinder and the buffer member have an elliptical horizontal section respectively, a long axis of the elliptical horizontal section is oriented along the front-rear direction, and a short axis of the elliptical horizontal section is oriented along the left-right direction.

14. The bogie assembly according to claim 12 , wherein the buffer member has a gap, and the gap is located on a left side or a right side of the pin shaft.

15. The bogie assembly according to claim 14 , wherein a horizontal section of the gap is arch-shaped and comprises a first segment, a second segment and a third segment sequentially connected along the front-rear direction, the second segment is rectangular and a long side of the second segment faces the pin bushing, the first segment is an arc-shaped segment extending from a short side of the second segment to an edge of the buffer member, and the first segment and the third segment are symmetrically arranged.

16. The bogie assembly according to claim 12 , wherein the buffer member is partitioned into four sub-buffer members by two parallel partitioning planes and the pin bushing, a normal of each partitioning plane is oriented along the front-rear direction, and each partitioning plane is intersected with the pin bushing.

17. The bogie assembly according to claim 16 , wherein the buffer member has a gap, the gap divides the sub-buffer members between the two partitioning planes into two portions, a first one of the two portions is adjacent to the pin bushing and fixed with the pin bushing, and a second one of the two portions is adjacent to the fixing cylinder and fixed with the fixing cylinder.

18. The bogie assembly according to claim 1 , wherein the traction frame is arch-shaped, covers over the running wheel, and comprises:
a top wall; and
two sidewalls, upper ends of the two sidewalls being connected with a front end and a rear end of the top wall, respectively,
a lower end of each sidewall having a plurality of fixing seats for being connected with the bogie frame, the plurality of fixing seats at the lower end of each sidewall comprising a first fixing seat and a second fixing seat, and a bottom surface of the first fixing seat and a bottom surface of the second fixing seat being located on different horizontal planes.

19. A straddle-type monorail vehicle, comprising a bogie assembly, wherein the bogie assembly comprises:
a bogie frame;
an electric assembly mounted on the bogie frame, the electric assembly comprising a traction motor, a gear reducer and a planetary wheel-side reducer, the traction motor being connected with an input shaft of the gear reducer, and an output shaft of the gear reducer being connected with an input end of the planetary wheel-side reducer;
a traction frame straddling across the bogie frame along a front-rear direction and covering the electric assembly;
a running wheel mounted on the bogie frame and an output end of the planetary wheel-side reducer being connected with a hub of the running wheel; and
a suspension system comprising
a suspension mounting seat suitable to be connected with a vehicle body,
a transverse shock absorber connected between the suspension mounting seat and the bogie frame,
a longitudinal shock absorber connected between the suspension mounting seat and the bogie frame, and
an elastic

Assignees

• Byd Co Ltd

Inventors

• Li Daolin
• Tan Zhicheng

Classifications

• Y02T30/00

  Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance · CPC title

• B61H5/00

  Applications or arrangements of brakes with substantially radial braking surfaces pressed together in axial direction, e.g. disc brakes · CPC title

• B61C3/00

  Electric locomotives or railcars (characterised by power transmission B61C9/00; electrical features B60L; H02) · CPC title

• B61B13/04 Primary

  Monorail systems · CPC title

• B61F5/10 Primary

  incorporating fluid springs · CPC title