Supplementary braking thrust unit for brake

Abstract

A supplementary braking thrust unit for brake consists of a drive unit (1), a liquid pump (2) and a liquid storage reservoir (3) and a hydraulic cylinder (4) which are driven by the drive unit (1). The inlet of the liquid pump (2) is connected with the liquid storage reservoir (3), the outlet of liquid pump (2) is connected with the driving fluid cavity (5) of hydraulic cylinder (4), the non-driving fluid cavity (6) of hydraulic cylinder (4) is connected with the liquid storage reservoir (3), and the thrusting rod (7) of hydraulic cylinder (4) is used to connect with the drive arm (8) of brake part (9). Sleeve pipe (12) is arranged outside the thrusting rod (7), and acts on the mechanism which executes supplementary brake operation on the brake part (9). The sleeve pipe (12) is extended outwards as the pushing bar (7) extends outwards, and the sleeve pipe (12) and the thrusting rod (7) can slide relatively one to the other as the thrusting rod (7) retracts inward. Said supplementary braking thrust unit also comprises a drive part to impel the sleeve pipe (12) to extend outwards and to retract.

Description

technical field [0001] The present invention relates to a brake, in particular to an improvement of a pusher of the brake. Background technique [0002] The brake is mainly composed of a braking part and a pusher or a pushing device. The publication date is August 22, 2007, and the patent document with the publication number CN2937582 discloses (application number 200620050535.0) a "variable force pusher for brakes". The driving arm is hingedly connected to act on the braking part, so that the braking part realizes the working state. The structure of the pusher includes a driving device, a liquid pump driven by the driving device, a liquid storage tank, and a hydraulic cylinder. The non-driving liquid cavity communicates with the liquid storage tank. If it is applied to normally closed brake, when the push rod of the pusher extends to the set position, the brake in the normally closed state will be released, and when the push rod retracts back to the position, the normal ...

AI Technical Summary

Problems solved by technology

If it is applied to normally closed brake, when the push rod of the pusher extends to the set position, the brake in the normally closed state will be released, and when the push rod retracts back to the position, the normal state of the brake part will be restored. Closed braking, the pusher only has the operation function of satisfying the braking part to generate one-time braking

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