Brake clearance adjuster
A gap adjuster and brake technology, applied in the direction of slack adjuster, etc., can solve the problem of low reliability, achieve the effect of reducing material process requirements, avoiding unstable factors, and simple structure
Active Publication Date: 2015-03-25
CRRC QISHUYAN INSTITUTE CO LTD
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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.
Method used
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[0014] Such as figure 1 , 2 , 3, a brake gap adjuster, including positioning pin 1, double-headed screw 2, mandrel 3, mandrel gasket 4, core body seat 5, elastic washer 6, shaft retaining ring 7, dial sleeve 8. One-way needle roller bearing 9, bushing 10, ball 11, baffle 12, spring 13, locking piece 14 and circlip 15, the baffle 12 and bushing 10 are respectively provided with hemispherical grooves 12-1 , 10-1, the ball 11 is placed in the hemispherical groove 12-1, 10-1, the one-way needle roller bearing 9 is matched with the bushing 10, the outer ring is interference fit with the dial sleeve 8, and the The baffle plate 12 has an internal spline 12-2, and the mandrel 3 has an external spline 3-3. The splines of the two are matched. One end of the spring 13 is offset against the baffle plate 12, and the other end is offset against the locking piece 14. The circlip 15 is fastened in the mandrel groove 3-2 of the mandrel 3, and one end is against the locking plate 14. The mand...
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The invention discloses a brake clearance adjuster. The brake clearance adjuster comprises a positioning pin, a double-thread screw, a mandrel, a mandrel spacer, a core seat, an elastic spacer, a shaft retainer ring, a shift sleeve, a one-way needle bearing, a bush, balls, a baffle, a spring, a lock sheet and a snap spring. The baffle and the bush are provided with semispherical grooves respectively, the balls are disposed in the semispherical grooves, the one-way needle bearing is matched with the bush, an outer ring is in interference fit with the shift sleeve, the baffle is provided with an inner spline, the mandrel is provided with an outer spline, the inner spline is matched with the outer spline, one end of the spring is abutted against the baffle, the other end of the spring is abutted against the locking piece, the snap spring is fastened in the mandrel groove of the mandrel, one end of the snap spring is abutted against the locking piece, the mandrel is provided with an inner thread, the double-thread screw is provided with an outer thread, and the inner thread and the outer thread are matched. The brake clearance adjuster can automatically adjust brake clearance between a friction plate and a brake disc and is simple in structure and reliable in 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 ...
Claims
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IPC IPC(8): F16D65/46
Inventor 梁创霖朱成元张勋林钱坤才
Owner CRRC QISHUYAN INSTITUTE CO LTD