Unlock instant, AI-driven research and patent intelligence for your innovation.

A hydraulic braking system of a subway train

A hydraulic brake and control system technology, applied in the direction of brakes, brake transmissions, vehicle components, etc., can solve the problems of providing sufficient braking force output, bulky air brake system, and narrow installation space for system equipment

Active Publication Date: 2021-04-06
嘉兴市钧萍轨道交通科技有限公司
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although these air brake systems can achieve a good braking effect, the air brake system has the problem that the volume of the air source system is too large, and the air source system is not configured for each train, so it needs to be used between cars pipe connection
In addition, when the air compressor used to generate air braking force is working, it will produce a lot of noise, especially when the train enters the station, the sound of the air compressor working and charging and exhausting will produce a lot of noise
[0005] In recent years, with the emphasis on light weight and modularization in the design of subways, and the installation space of various system equipment has become smaller and smaller, the air brake system is difficult to meet the lightweight and modular braking mode due to its large size. Unable to provide sufficient braking force output under the premise of meeting the installation space

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A hydraulic braking system of a subway train
  • A hydraulic braking system of a subway train
  • A hydraulic braking system of a subway train

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] see figure 1 and figure 2 , the hydraulic brake system 1 of the subway train of the present invention comprises the hydraulic brake clamp that is installed on the bogie of each train vehicle, the hydraulic brake control system that is used to control the working state of this hydraulic brake clamp, and An auxiliary release device for assisting release of the hydraulic brake caliper; wherein the auxiliary release device is a hydraulic device independent of the hydraulic brake control system. In this embodiment, two vehicles, vehicle 1001 and vehicle 1002, are used as an example to illustrate it. Of course, multiple vehicles can be grouped for braking according to actual needs, and vehicles 1001 are equipped with hydraulic pressure Brake caliper 103, 104, 105 and 106, and each hydraulic brake caliper is equipped with a manual mechanical relief device for manual mechanical relief, that is, the structure of the braking system on the two vehicles is the same, in the follow...

Embodiment 2

[0046] As the description of Embodiment 2 of the present invention, only the differences from Embodiment 1 above will be described below, that is, the structure of the auxiliary mitigation device will be mainly described. In this embodiment, the auxiliary release device is a hydraulic device independent of the hydraulic brake control unit, that is, the auxiliary release function and the normal release function use a completely independent oil circuit, which increases redundancy.

[0047] see image 3 , the auxiliary relief device 9 includes a charging branch, a pressure releasing branch, a pipeline switching unit, a first external connector 911 for connecting with a hydraulic brake caliper pipeline, and a joint for detachable connection with a manual pump The second external connection 912 of the first external connection 911 can be used to connect the pipeline of the entire auxiliary relief device 9 to the clamp cavity 9010 of the hydraulic brake caliper. Both the second ext...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a hydraulic braking system of a subway train, belonging to the technical field of rail vehicles. Hydraulic brake system includes hydraulic brake caliper, hydraulic brake control system and auxiliary relief device; brake control system includes speed sensor, air spring pressure sensor and brake control device, brake control device includes electronic brake control unit and Hydraulic brake control unit; the hydraulic brake control unit includes a valve control device and a hydraulic source device for supplying hydraulic oil to the hydraulic brake caliper. The hydraulic source device includes an oil pump and an oil pump driving motor, and the valve control device is used for the hydraulic source. The device controls the process of outputting hydraulic oil to the hydraulic brake caliper; the electronic brake control unit outputs control signals to the motor controller of the oil pump driving motor and the valve control device. The use of hydraulic brake calipers to build subway braking systems can meet the requirements of lightweight and modular design, and can be widely used in manufacturing fields such as rail vehicles.

Description

technical field [0001] The invention relates to a braking system for rail transit vehicles, in particular to a hydraulic braking system for subway trains. Background technique [0002] In recent years, with the rapid development of the subway, its operating speed has increased from the initial 60 kilometers per hour to 80 kilometers per hour, 100 kilometers per hour, or even higher. Due to the short distance between subway stations, compared with other rail transit vehicles, its starting and stopping are more frequent. In order to ensure the driving efficiency, the vehicles are required to have greater starting acceleration and braking deceleration. In the high-speed operation of the subway, it is bound to rely on the brake control system to adjust the train speed and stop at the predetermined position in time and accurately, making the brake system an indispensable part of the safe operation of the subway. [0003] At present, the commonly used braking system of the subway...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B60T13/66B60T13/68
Inventor 莫亦荣仲云龙章小勤闻立新
Owner 嘉兴市钧萍轨道交通科技有限公司