Electromagnetic controllable mechanical brake parking device

Abstract

The invention relates to an electromagnetic controllable mechanical brake parking device which comprises action arms, an action arm installation seat, cylindrical compression springs, electromagnetic iron components and abrasion pieces. Two action arms are respectively connected on an upper end and a lower end of the action arm installation seat in a rotation mode, the cylindrical compression springs are arranged between the two action arms, two ends of each cylindrical compression spring are connected with the action arms on the upper side and the lower side respectively, the electromagnetic iron components are arranged inside the cylindrical compression springs and connected with the action arms on the upper side and the lower side, and two abrasion pieces are respectively arranged at the other end of each action arm. Compared with the prior art, electricity amount of the electromagnetic iron components is controlled to control frictional force among the abrasion pieces and a steel rail so as to achieve braking or parking of a vehicle, the abrasion pieces are compressed on the steel rail, most thermal load is born by the steel rail, the position of the vehicle is continuously moved, heat generated by the braking is rapidly dissipated on the steel rail, and the electromagnetic controllable mechanical brake parking device is suitable for being used for continuously-implemented brake of the vehicle on long-distance downhill.

Description

technical field [0001] The invention relates to a braking and parking device, in particular to an electromagnetically controllable mechanical braking and parking device, which belongs to the technical field of rail transit equipment. Background technique [0002] As the brake device used in traditional rail transit vehicles, as far as the braking position is concerned, tread brakes or disc brakes are generally used. Most of the heat load is borne by the wheels or brake discs, and the heat is not conducive to rapid braking. Dissipation, such as tread braking, the temperature of the wheel tread increases rapidly, and when it reaches a certain level, the tread will be worn, cracked or peeled off, which will affect the service life and driving safety. If the disc brake is used, the heat will be the same It is not conducive to rapid dissipation and accumulation on brake discs, axles, and bearings, and is not suitable for continuous braking of vehicles on long-distance downhill sl...

AI Technical Summary

Problems solved by technology

[0002] As the brake device used in traditional rail transit vehicles, as far as the braking position is concerned, tread brakes or disc brakes are generally used. Most of the heat load is borne by the wheels or brake discs, and the heat is not conducive to rapid braking. Dissipation, when the vehicle is braked on the tread, the temperature of the wheel tread will increase rapidly. When it reaches a certain level, the tread will be worn, cracked or peeled off, which will not only affect the service life but also affect the driving safety. If the disc brake is used, the heat will also It is not conducive to rapid dissipation and accumulation on brake discs, axles, and bearings, and is not suitable for continuous braking of vehicles on long-distance downhill slopes; as far as the form of braking force is concerned, electric control braking is generally used, and electric braking is preferred for common braking. Braking, usually the electrical braking force is insufficient, and the air braking force is used to make up for it, and the air braking force has a certain hysteresis, and the system is complicated

Images