Mechanical interlocking type parking brake for railway vehicle

Abstract

The invention discloses a mechanical interlocking type parking brake for a railway vehicle. The mechanical interlocking type parking brake comprises a brake cylinder assembly and a mechanical interlocking mechanism, wherein the brake cylinder assembly comprises a cylinder body, a piston, a piston rod and a release spring; the mechanical interlocking mechanism comprises a locking base also used as a cylinder cover, the piston rod extends out of the locking base to be connected with a regulating shaft of a vehicle brake device, the locking base is internally provided with a locking nut rotating along the circumferential direction of the piston rod and a locking shaft sleeve moving along the axial direction of the piston rod, a rest spring by which tow end faces of the locking shaft sleeve and the piston rod are in butt joint is arranged between the locking shaft sleeve and the piston rod, a friction pair meshed face is formed at the joint of the end faces of the locking shaft sleeve and the piston rod, and a compressed air flange connector is connected with a vehicle main air pipeline is arranged in the side wall of the locking base, and is communicated with one side of the locking shaft sleeve, which is close to one side of the locking nut. The mechanical interlocking type parking brake is used for combining travelling brake and parking brake of the vehicle into a whole, is capable of automatically starting the parking brake and keeping a brake force until the brake release is started if necessary, and has the characteristics of uniform brake force, short parking brake time, safety in operation of the vehicle, and the like.

Description

technical field [0001] The invention relates to a railway vehicle brake device, in particular to a railway vehicle mechanical locking parking brake. Background technique [0002] In the railway train transportation industry, when the vehicles need to be parked on the track, freight yard or maintenance workshop due to failure, derailment, in order to ensure the safety of the staff, parking brakes must be implemented on a certain number of vehicles. Parking brake is an auxiliary backup braking technology for railway vehicles, which is used to keep the braking force of the vehicle after the air braking force is eliminated, so as to prevent safety accidents caused by the movement of the vehicle on the track. Domestic trucks mainly use FSW and NSW hand brakes, while foreign ones are represented by AAR standard hand brakes, which are mainly used to brake the vehicle during shunting and other operations to prevent the parked vehicle from slipping away accidentally. The quality of ...

AI Technical Summary

Problems solved by technology

[0004] 1. The two sets of braking devices are independently designed, which not only occupies the limited space on the vehicle, but also increases the weight of the vehicle

[0005] 2. The two sets of brake devices are installed separately, which is not conducive to the layout of other parts on the vehicle and affects the optimization of the overall structure of the vehicle.

[0006] 3. The force exerted by the operator on the handwheels of each vehicle cannot be the same, resulting in inconsistent braking force of the entire vehicle

[0007] 4. High degree of dependence on the operator. If the vehicle forgets to release the brake before running, the wheel tiles cannot be disengaged, and it is easy to cause wheel tread scratches or safety accidents when the vehicle is running.

[0008] 5. For the entire train of vehicles, it is necessary to brake and stop or ease the brakes one by one, which is time-consuming, laborious and inefficient

Based on the potential safety hazards easily caused by the slope of the line, and the need to implement hand brakes one by one after the entire train stops, it will consume a lot of labor and time costs, and the temperature in some line areas is as high as 40~50°C, so manual parking is carried out one by one Braking is basically impossible

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