A brake cylinder of a rail vehicle hydraulic brake device

Abstract

The invention discloses a brake cylinder of a hydraulic brake device of a railway vehicle. The brake cylinder comprises a shell component, a disk spring assembly, an indicator assembly, a piston assembly, a push rod assembly and an end cover assembly. The push rod assembly, the piston assembly, the disk spring assembly and the indicator assembly are sequentially installed in a cylindrical hole inside the shell component from front to back, wherein the cylindrical hole is provided with a step, and the axis of the push rod assembly, the axis of the piston assembly, the axis of the disk spring assembly, and the axis of the indicator assembly are the same as the main axis of the shell component. The end cover assembly is installed on the cylindrical step at the front end of the shell component, and the axis of the end cover assembly is the same as the main axis of the shell component. Brake clearances can be automatically compensated by multiple threads. Compared with an existing brake cylinder, the brake cylinder is simple in structure, convenient to machine and assemble, few in movable parts, and high in reliability, has the friction plate and brake disc abrasion monitoring function and the automatic compensation mechanism running real-time monitoring function, and can remotely monitor the working state of the brake cylinder in real time. Manual brake loosening and adjustment can be achieved on the scene through a manual mechanical brake loosening device, and operation is conveniently and quickly conducted.

Description

technical field [0001] The invention relates to the field of rail vehicle braking, in particular to a brake cylinder of a rail vehicle hydraulic braking device. Background technique [0002] The braking system is an important safety device for rail vehicles, which is related to the life and property safety of passengers and pedestrians. Traditional rail vehicle braking devices generally use air brakes, and the structural layout makes the structure of the brake cylinder huge and complicated, which cannot be installed on rail vehicles with a small space under the car body. The hydraulic braking system is small in size and can be installed on the bogie nearby. [0003] The main component of the hydraulic braking system is the brake cylinder of the hydraulic braking device. During the use of the braking system of rail transit vehicles, it is easy to cause wear of the friction lining and the brake disc, thereby increasing the gap between the friction lining and the brake disc. ...

AI Technical Summary

Problems solved by technology

The brake caliper belongs to the active type, that is, the hydraulic oil is pressed to brake, and the hydraulic oil is released to release the brake. It has the following shortcomings: First, the brake caliper does not have the function of automatic gap compensation, so as As the number of times increases, the gap between the surface of the friction plate and the surface of the brake disc will continue to increase, resulting in prolonged braking time; second, the brake caliper does not have a detection device for the wear of the friction plate and brake disc, and can only be manually It is not easy to find the problem in time, and there are certain safety hazards; third, the brake caliper cannot provide pressure oil when the hydraulic system fails or the circuit fails, so it cannot achieve braking.

The structure of the brake cylinder with this structure is complicated, the processing and assembly of parts are difficult, there are many moving parts, the possibility of failure is high, the reliability is not high, and it does not have the function of monitoring the wear of the friction plate and the real-time monitoring of the working status of the automatic compensation mechanism. Function

[0010] To sum up, the structure of the brake cylinder of the existing rail vehicle hydraulic brake device is complicated, and it is difficult to process and assemble. Since there are many moving parts in the brake cylinder during the braking process and the automatic compensation process, the possibility of failure may occur High reliability, low reliability, and does not have the wear monitoring function of the friction lining and brake disc. It can only rely on manual observation of the wear of the friction lining and brake disc when the vehicle is parked for maintenance, and cannot monitor the working status of the automatic compensation mechanism in real time. , if the automatic compensation mechanism breaks down, it is difficult to be found, and there are potential safety hazards

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