Brake mode of band brake and brake thereof

Abstract

A braking mode of band brake and a brake thereof relate to a band brake for braking rotating machinery. The braking mode of the band brake comprises arranging a self-locking device and a regulating device at a pull side of a braking band component, arranging a buffer at a fixing side, arranging a limiting device on a braking rod, and realizing bidirectional brake when three points, which are the pull point, the fixing point and the tangent point of the pull side of the braking band component and the outer circle of a braking wheel, are on a straight line. The band brake is a self-locking bandbrake with bidirectional function which has good bidirectional braking effect, simple structure, easy fabrication, low cost, is capable of removing the general appended unidirectional bearing or unidirectional spring. Due to the buffer, the brake has small impact when braking switch; due to mutual balance of bidirectional braking moment the braking is smooth. The technical scheme is applicable for braking operating machinery and engineering machinery, especially for braking a speed clutch of a propel type washing machine.

Description

technical field [0001] The technical solution of the invention relates to a band brake used for braking rotating equipment, in particular to the braking of a deceleration clutch of a pulsator washing machine. Background technique [0002] The band brakes in conventional mechanical transmissions, especially the band brakes of washing machine deceleration clutches, generally adopt a one-way acting type. One end of the brake band assembly is fixed, and the other end is tightened by a brake lever. Its advantages are simple structure and low cost. Low, its disadvantage is: it has one-way effect, that is, the braking effect of the brake is related to the rotation direction of the brake wheel. Function, the braking effect is very good, but when the brake wheel rotates towards the fixed end of the brake band assembly, due to the effect of friction, it will try to push the brake band assembly away, so the braking effect is very poor; conventional washing machines slow down In order ...

AI Technical Summary

Problems solved by technology

[0002] The band brakes in conventional mechanical transmissions, especially the band brakes of washing machine deceleration clutches, generally adopt a one-way acting type. One end of the brake band assembly is fixed, and the other end is tightened by a brake lever. Its advantages are simple structure and low cost. Low, its disadvantage is: it has one-way effect, that is, the braking effect of the brake is related to the rotation direction of the brake wheel. Function, the braking effect is very good, but when the brake wheel rotates towards the fixed end of the brake band assembly, due to the effect of friction, it will try to push the brake band assembly away, so the braking effect is very poor; conventional washing machines slow down In order to overcome the shortcomings of the one-way acting band brake, the clutch generally has a one-way bearing or one-way spring attached to the relevant position of the brake wheel, but this increases the manufacturing cost.

However, the structure of the conventional two-way acting band brake is relatively complicated. Recently, two unidirectional acting brake bands have also been adopted to solve the problem of two-way braking. The structure is complex and difficult to popularize.

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