Rail vehicle bogie draw-gear

Patent metadata

Field	Value
Publication number	US-10137910-B2
Application number	US-201515112238-A
Country	US
Kind code	B2
Filing date	Sep 22, 2015
Priority date	Sep 30, 2014
Publication date	Nov 27, 2018
Grant date	Nov 27, 2018

Abstract

A rail vehicle bogie traction device is provided, which includes a center pin and two traction rubber bag assemblies. Each of the traction rubber bag assemblies includes a traction rubber stack and a rubber bag, the rubber bag is filled with fluid, and a pressure of the rubber bag is settable. The traction rubber stack is connected to the rubber bag. The center pin is fixed on a lower surface of a vehicle body chassis bolster. Each of the two traction rubber bag assemblies has one end connected to the center pin, and another end connected to a cross beam of a rail vehicle frame. The rail vehicle bogie traction device has nonlinear characteristics, which may effectively transmit a longitudinal load, and may also prevent high-frequency vibration of the frame from transmitting to the vehicle chassis bolster and the vehicle body via the traction device.

First claim

What is claimed is:

1. A rail vehicle bogie traction device, comprising
a center pin, and
two traction rubber bag assemblies,
wherein
each of the traction rubber bag assemblies comprises a traction rubber stack and a rubber bag, the rubber bag is filled with fluid, and a pressure of the rubber bag is settable;
the traction rubber stack is connected to the rubber bag;
the center pin is fixed on a lower surface of a vehicle body chassis bolster; and
each of the two traction rubber bag assemblies has one end connected to the center pin, and another end connected to a cross beam of a rail vehicle frame.

2. The rail vehicle bogie traction device according to claim 1 , wherein the two traction rubber bag assemblies are symmetrically arranged with respect to a center of the center pin.

3. The rail vehicle bogie traction device according to claim 2 , wherein the rubber bag is provided with a pressure control system, the pressure control system comprises a controller, a fluid source, a sensor, a filling valve and a discharging valve, and each of the filling valve and the discharging valve is connected to the rubber bag;
the fluid source is connected to the filling valve;
the sensor is mounted in the rubber bag for detecting a pressure in the rubber bag; and
the controller is electrically connected to the fluid source, the sensor, the filling valve and the discharging valve.

4. The rail vehicle bogie traction device according to claim 2 , wherein the two traction rubber bag assemblies are fixedly connected to a front side and a rear side of the center pin respectively.

5. The rail vehicle bogie traction device according to claim 4 , wherein the rubber bag is provided with a pressure control system, the pressure control system comprises a controller, a fluid source, a sensor, a filling valve and a discharging valve, and each of the filling valve and the discharging valve is connected to the rubber bag;
the fluid source is connected to the filling valve;
the sensor is mounted in the rubber bag for detecting a pressure in the rubber bag; and
the controller is electrically connected to the fluid source, the sensor, the filling valve and the discharging valve.

6. The rail vehicle bogie traction device according to claim 2 , further comprising a center pin seat sleeved on the center pin, wherein the two traction rubber bag assemblies are respectively connected to the center pin seat and are arranged in a Z shape.

7. The rail vehicle bogie traction device according to claim 6 , wherein the rubber bag is provided with a pressure control system, the pressure control system comprises a controller, a fluid source, a sensor, a filling valve and a discharging valve, and each of the filling valve and the discharging valve is connected to the rubber bag;
the fluid source is connected to the filling valve;
the sensor is mounted in the rubber bag for detecting a pressure in the rubber bag; and
the controller is electrically connected to the fluid source, the sensor, the filling valve and the discharging valve.

8. The rail vehicle bogie traction device according to claim 1 , wherein the number of the traction rubber stack is two, the number of the rubber bag is one, and the two traction rubber stacks are respectively connected to two sides of the rubber bag and are coaxially arranged.

9. The rail vehicle bogie traction device according to claim 8 , wherein the rubber bag is provided with a pressure control system, the pressure control system comprises a controller, a fluid source, a sensor, a filling valve and a discharging valve, and each of the filling valve and the discharging valve is connected to the rubber bag;
the fluid source is connected to the filling valve;
the sensor is mounted in the rubber bag for detecting a pressure in the rubber bag; and
the controller is electrically connected to the fluid source, the sensor, the filling valve and the discharging valve.

10. The rail vehicle bogie traction device according to claim 1 , wherein a compression elastic member is provided in the rubber bag, the compression elastic member has one end fixed to an inner surface, at one side close to the center pin, of the rubber bag, and an axis of the compression elastic member has the same direction as an axis of the traction rubber stack.

11. The rail vehicle bogie traction device according to claim 10 , wherein the rubber bag is provided with a pressure control system, the pressure control system comprises a controller, a fluid source, a sensor, a filling valve and a discharging valve, and each of the filling valve and the discharging valve is connected to the rubber bag;
the fluid source is connected to the filling valve;
the sensor is mounted in the rubber bag for detecting a pressure in the rubber bag; and the controller is electrically connected to the fluid source, the sensor, the filling valve and the discharging valve.

12. The rail vehicle bogie traction device according to claim 1 , wherein the rubber bag is provided with a pressure control system, the pressure control system comprises a controller, a fluid source, a sensor, a filling valve and a discharging valve, and each of the filling valve and the discharging valve is connected to the rubber bag;
the fluid source is connected to the filling valve;
the sensor is mounted in the rubber bag for detecting a pressure in the rubber bag; and
the controller is electrically connected to the fluid source, the sensor, the filling valve and the discharging valve.

13. The rail vehicle bogie traction device according to claim 12 , wherein a pressure reducing valve is provided between the fluid source and the filling valve.

14. The rail vehicle bogie traction device according to claim 12 , wherein the fluid source is an air supply unit or an oil supply unit.

15. The rail vehicle bogie traction device according to claim 1 , wherein the controller is connected to a main control system of a rail vehicle for receiving traction/brake signals and/or frame acceleration signals of the rail vehicle.

Assignees

• Crrc Qingdao Sifang Co Ltd

Inventors

• Yu Dalian
• Li Haitao
• Qu Wenqiang
• Liu Shaoqing
• Lin Jun
• Deng Xiaojun
• Gong Ming
• Liang Jianying

Classifications

• B61F5/16 Primary

  Centre bearings or other swivel connections between underframes and bolsters or bogies · CPC title

• B61F5/245 Primary

  by active damping, i.e. with means to vary the damping characteristics in accordance with track or vehicle induced reactions, especially in high speed mode · CPC title

• B61F1/14

  Attaching or supporting vehicle body-structure · CPC title

• B61F5/50 Primary

  Other details · CPC title

• B61F5/24

  Means for damping or minimising the canting, skewing, pitching, or plunging movements of the underframes · CPC title