Wedge type mechanism capable of automatic regulating brake gap

Abstract

The invention relates to a brake gap automatic regulating wedge mechanism in an arrester, and its technical solution: it comprises casing, wedge, compression spring, trolley, piston, roller push block, piston spring, driving ring, driving ring spring and regulating bolt, where the a vertical hole I and a horizontal through hole II are arranged in the casing, the outer end of the through hole II is provided with a conical plane P, the driving ring is arranged inside the conical plane P, one end of the driving ring spring supports against a shield and the other end supports against the driving ring to press the driving ring on the conical plane P, the piston is connected in the through hole II in sliding mode, the rear end of the piston is hinged with the roller push block, and the front side of the piston is provided with a spiral tooth, which is arranged in a spiral groove inside the driving ring, there is an axial gap ª€ between them, two sides of the lower end of the wedge are symmetrically hinged with trolleys corresponding to the roller push block, the regulating bolt is screwed with the piston and the front end of the regulating bolt is connected with an active fastening hoop. Its advantages: automatically compensating the brake gap; simple structure and low cost; not heating, low noise and not deflection.

Description

technical field [0001] The invention relates to an automobile brake, more specifically, to a wedge type mechanism for automatically adjusting the braking gap in the brake. Background technique [0002] At present, the drum brakes commonly used in trucks and buses in our country, that is, cam drum brakes, have the biggest disadvantage that the brake clearance needs to be adjusted manually. When the car is running for a period of time, the brake clearance increases. You will feel that the brakes are relatively weak, and then manually adjust to achieve the required clearance. This adjustment is based on the technical level of the driver on the one hand, and the adjustment carried out on the other hand is lagging behind, so that the driving safety and reliability of the braking device are greatly reduced. In order to improve the safety of driving, the country has promulgated new relevant laws and regulations, requiring that the brake devices of all vehicles must have the functi...

AI Technical Summary

Problems solved by technology

As a result, some automatic adjusting arm products continue to appear on the market, so that the drum brakes commonly used now have the self-adjusting function of the brake gap. However, after a period of testing, it is found that after the automatic adjusting arm is installed, the following problems will occur: 1. ) Braking deviation, which is one of the causes of many traffic accidents; 2) Braking overheating, which is prone to thermal recession and affects braking reliability; 3) Braking noise is large, causing environmental pollution

At the same time, the processing accuracy of the brake itself needs to be significantly improved when equipped with an automatic adjustment arm, which greatly increases the cost of the brake, reduces its market value, and is difficult to promote

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