Central traction device for straddling monorail train

Patent metadata

Field	Value
Publication number	US-10507847-B2
Application number	US-201615777912-A
Country	US
Kind code	B2
Filing date	Dec 13, 2016
Priority date	Jan 5, 2016
Publication date	Dec 17, 2019
Grant date	Dec 17, 2019

Abstract

A central traction device for a straddling monorail train includes a traction pin and a traction beam. A central sleeve is provided at the center of the traction beam, and the traction pin is mounted in the central sleeve. An inner cavity of the central sleeve has a corset-shaped structure having large diameters on an upper end and a lower end and a small diameter at a middle part, forming double tapered bevels, and a resilient rubber bush is provided between an inner wall of the central sleeve and the traction pin. The device has a simple and compact overall structure and facilitates connection and separation between the train body and the bogie; by providing the lift assembly, the traction device is fixedly connected to the frame, thus the traction device can be wholly lifted; and operation process and environment of raising and lowering the vehicle are improved.

First claim

The invention claimed is:

1. A central traction device for a straddle-type monorail train, comprising:
a traction pin, and
a traction beam, a central sleeve being provided at the center of the traction beam, and the traction pin being mounted in the central sleeve, wherein:
an inner cavity of the central sleeve has a corset-shaped structure having large diameters on an upper end and a lower end and a small diameter at a middle part, forming double tapered bevels, and a resilient rubber bush is provided between an inner wall of the central sleeve and the traction pin; and
wherein the central sleeve of the traction beam has a structure which is cut-through from top to bottom, a seal plate and a lower gland are provided at a bottom portion of the central sleeve, the seal plate is fixedly connected to a bottom portion of the traction beam by a bolt, and the lower gland is fixedly mounted between the seal plate and the traction pin; and
wherein a traction pin hole, which is cut-through from top to bottom, is provided at the center of the traction pin, and a long bolt passing through the traction pin hole is mounted in the traction pin hole, an annular positioning block is mounted at a top side of the traction pin hole and a top portion of the long bolt passes through the positioning block, a bottom portion of the long bolt has external threads, an internal threaded hole is provided at the center of the lower gland, and the bottom portion of the long bolt and the lower gland are fixedly connected by screw threads.

2. The central traction device for the straddle-type monorail train according to claim 1 , wherein the resilient rubber bush comprises two rubber rings which are respectively an upper rubber ring and a lower rubber ring, the upper rubber ring is mounted on a tapered bevel at an upper side of the corset-shaped inner cavity of the central sleeve, and the lower rubber ring is mounted on a tapered bevel at a lower side of the corset-shaped inner cavity of the central sleeve.

3. The central traction device for the straddle-type monorail train according to claim 2 , wherein a step-like structure converging towards the center of the traction pin is provided around an outer periphery of the traction pin, and after being mounted, the upper rubber ring is clamped between the step-like structure of the traction pin and an inner wall of the central sleeve.

4. The central traction device for the straddle-type monorail train according to claim 2 , wherein an outer periphery of a bottom portion of the traction pin has a tapered surface converging toward the center of the traction pin, and after being mounted, the lower rubber ring is clamped between the bottom portion of the traction pin and an inner wall of the central sleeve.

5. The central traction device for the straddle-type monorail train according to claim 1 , wherein a bottom portion of the central sleeve of the traction beam is recessed outward, and a seal ring is mounted between an outer circumference of the lower gland and an inner wall of the bottom portion of the central sleeve.

6. The central traction device for the straddle-type monorail train according to claim 1 , wherein a boss structure is provided on an upper surface of the lower gland, an outer circumference of a bottom portion of the traction pin has an anti-rotation planar surface which is inwardly concaved, and the boss structure of the lower gland cooperates with the anti-rotation planar surface of the traction pin to prevent rotation.

7. The central traction device for the straddle-type monorail train according to claim 1 , wherein the traction device further comprises two end plates distributed in a longitudinal direction, and the two end plates are respectively mounted at outer sides of the traction pin, a top portion of each of the end plates is fixedly connected to the frame, and four traction rubber stacks are mounted between the traction beam and the two end plates.

8. The central traction device for the straddle-type monorail train according to claim 7 , wherein the traction rubber stack is formed by vulcanizing five parallel metallic plates and four layers of rubber between the adjacent metallic plates together, two positioning and mounting mandrels, which protrude out, are respectively provided on outer surfaces of two metallic plates on outermost sides, and the two positioning and mounting mandrels are respectively inserted into a rubber stack mounting hole provided in the end plate and a rubber stack mounting hole provided in the traction beam to achieve fixing.

9. The central traction device for the straddle-type monorail train according to claim 1 , wherein the traction device further comprises a lift assembly comprising a lift plate, a lift baffle and a lift block;
the lift plate is fixedly connected to the frame by a bolt, and a through hole, through which the traction pin passes, is provided at the center of the lift plate; and
the lift baffle is formed by two longitudinal plates and two transverse plates, and the two longitudinal plates and the two transverse plates are fixed perpendicularly on a top of the lift plate by welding, the traction pin is located in a space enclosed by the two longitudinal plates and the two transverse plates, and each of four corners of the lift plate is welded with one lift block.

Assignees

• Crrc Qingdao Sifang Co Ltd

Inventors

• Zhou Jinming
• Zhang Yuejun
• Zhang Huijie
• Ma Lijun
• Lv Xiaojun
• Zhao Haiqin
• Zhou Xiaojiang
• Song Shuliang
• Zhao Wei
• Shi Yujie
• Zhai chaozhi

Classifications

• B61G9/00 Primary

  Draw-gear · CPC title

• B61C13/08 Primary

  for saddle or like balanced type railways · CPC title

• B61B13/06

  Saddle or like balanced type · CPC title

• B61F5/50 Primary

  Other details · CPC title