A friction variable damper

Abstract

The invention belongs to the technical field of dampers, and particularly relates to a friction force variable damper which comprises an elastic member and two friction mechanisms which are symmetrically distributed. Each friction mechanism is internally provided with two sliding mechanisms, wherein two friction members are arranged between the two friction mechanisms, each friction member includes a second friction block and two first friction blocks, and the two first friction blocks are screwed and fixed to the two sides of the second friction block through two second fastening bolts; the second fastening bolts inside fixing grooves and limiting grooves are twisted to disassemble, take down and replace the first friction blocks or the second friction blocks, the possibility that brakingis influenced by large losses caused by uneven abrasion on the surfaces of friction plates can be reduced, the brake stability of the damper is improved, only the first friction blocks or the secondfriction blocks which are greatly abraded can be replaced according to the friction influence degrees of the first friction blocks or the second friction blocks, and the replacing and maintaining costcan be reduced.

Description

technical field [0001] The invention belongs to the technical field of dampers, in particular to a variable friction damper. Background technique [0002] The damper is a device that provides movement resistance and consumes movement energy. It is not a new technology to use damping to absorb and absorb shocks. It has long been used in aerospace, aviation, military industry, guns, and automobile industries. After the 1970s, people began to gradually transfer these technologies to structural engineering such as buildings, bridges, and railways, and their development was very rapid. [0003] The Chinese patent discloses a variable friction damper (Notice No. CN105297937B). This solution can solve the technical problems of invariable friction and uneven force of conventional friction dampers, but the small friction plate in this solution is When the uneven friction force rubs against the friction surface for a long time, the wear of the entire end surface will also be uneven d...

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Problems solved by technology

[0003] The Chinese patent discloses a variable friction damper (Notice No. CN105297937B). This solution can solve the technical problems of invariable friction and uneven force of conventional friction dampers, but the small friction plate in this solution is When the uneven friction force rubs against the friction surface for a long time, the wear of the entire end surface will also be uneven due to the influence of the friction force. If the small friction plate is not replaced in time, it is likely to be caused by the friction plate The unevenness of the body surface affects the braking, and the scheme uses an elastic element between the friction plate and the sliding plate to make the upper and lower friction plates closely contact when under pressure, and the elastic force of the elastic element will gradually decrease under the pressure of long-term work , the ductility will be affected after the elastic force becomes smaller, which will directly lead to the reduction of the friction between the small friction block and the friction plate, thus affecting the braking effect

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