Quick brake internal expanding brake structure

Abstract

The invention provides a rapid braking internal expansion brake structure, which relates to the technical field of vehicle braking, and includes a brake disc and a wheel shaft whose axis coincides with the brake disc. The wheel shaft is covered with an elastic bushing. Several pneumatic brake mechanisms are arranged between the brake disc and the shaft sleeve. The pneumatic brake mechanism includes a pneumatic brake block and a locking key matched with the pneumatic brake block. One end of the pneumatic brake block The locking key is fixed on the inner wall of the brake disc, and the other end is connected to the shaft sleeve; when braking, the pneumatic brake block is inflated and pressed against the wheel shaft and the brake disc. By implementing the technical proposal, the problem of quickly completing the braking work of the internal expansion brake structure and avoiding potential safety hazards can be solved in an emergency state.

Description

technical field [0001] The invention relates to the technical field of vehicle braking, in particular to an internal expansion braking structure for rapid braking. Background technique [0002] With the development of modern science and technology, at the same time, consumers' requirements for vehicle safety performance are increasing day by day, and vehicle braking has also been continuously developed. The brake device produces friction between the brake pads and the wheel drum or disc, and in the process of friction, the kinetic energy of the car is converted into heat energy and consumed. The common brake devices are "drum brakes" and "disc brakes". Both "drum brakes" and "disc brakes" are braked by brake pads. Due to friction, the brake pads will be gradually worn out. , After the friction material is used, the brake pads should be replaced in time, otherwise the steel plate will be in direct contact with the brake disc, and eventually the braking effect will be lost an...

AI Technical Summary

Problems solved by technology

This technical solution replaces the brake friction medium with a low-melting-point working medium to solve the problem of unstable contact between the brake block and the friction plate and poor braking effect after the friction plate on the brake is worn to a certain degree of braking.

[0004] However, this technical solution still has the following deficiencies: 1. Braking mostly exists in an emergency state, and it takes enough time to heat the low-melting point alloy to expand to a certain extent to complete the braking, so there are potential safety hazards; 2. The expansion of the expansion wheel drives the connected left brake block and right brake block to complete the braking work. If the working medium in the expansion wheel is heated and unstable, the braking cannot be completed, and the braking is unstable.

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