brake slack adjuster

Abstract

The invention discloses a brake gap adjuster, which comprises a positioning pin, a double-headed screw, a mandrel, a mandrel spacer, a core body seat, an elastic spacer, a retaining ring for a shaft, a dial sleeve, a one-way needle roller bearing, a lining sleeves, balls, baffles, springs, locking pieces and circlips, the baffles and the bushes are respectively provided with hemispherical grooves, the balls are placed in the hemispherical grooves, the one-way needle roller bearing and the bushing Matching, the outer ring and the dial sleeve are interference fit, the baffle has an inner spline, the mandrel has an outer spline, and the two splines cooperate, one end of the spring is against the baffle, and the other end is against the locking piece , the circlip is clamped in the mandrel groove of the mandrel, and one end is against the locking plate, the mandrel has an internal thread, and the double-ended screw has an external thread, and the two threads are matched. The invention can automatically adjust the brake gap between the friction plate and the brake disc, and has simple structure and reliable performance.

Description

technical field [0001] The invention relates to an air disc brake, in particular to a gap adjuster for a 17.5-inch heavy truck air disc brake. Background technique [0002] With the vigorous development of the heavy-duty truck market, the requirements for the brakes used are getting higher and higher. With its excellent performance, air disc brakes are gradually replacing drum brakes and entering the heavy-duty truck market. As a key component of air disc brakes, the performance of the slack adjuster has received more attention. However, the existing slack adjuster suitable for 17.5-inch air disc brakes mainly relies on the relative friction force of friction pairs to transmit torque, and the reliability is not high. In the hundreds of thousands of times of braking, once the friction fails, the adjuster will lose the gap adjustment function. Contents of the invention [0003] The object of the present invention is to provide a brake gap adjuster capable of automatically ...

AI Technical Summary

Problems solved by technology

However, the existing slack adjusters suitable for 17.5-inch air disc brakes mainly rely on the relative friction force of friction pairs to transmit torque, and the reliability is not high.

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