Single-cylinder double-cavity reciprocating damper

Abstract

A single-cylinder double-cavity reciprocating damper comprises a cylinder body and a piston arranged in the cylinder body. A piston rod is fixed on the piston. One end of the piston rod extends out ofthe cylinder body. An end cover for sealing is arranged at the end, close to the piston, of the cylinder body. A sealing element for sealing is arranged at the other end of the cylinder body. A channel is arranged on the piston. A functional cavity filled with electrorheological fluid is arranged in the piston, and sliding sealing is realized between the functional cavity and the cylinder body. An electrode unit connected with a circuit and used for forming an electric field is arranged on the functional cavity and the cylinder body. The end cover is positioned at one side of the cylinder body, an air cavity is formed in the end cover, and the side, facing the inner side of the cylinder body, of the air cavity is a deformable piece. Sliding sealing is realized between the sealing elementand the piston rod through a sealing sleeve. According to the single-cylinder double-cavity reciprocating damper, a damping cavity in the piston is isolated from an inner cavity of the cylinder body by improving the structure of the piston, the damping effect can be realized through a small amount of electrorheological fluid damping liquid, the damping effect is controllable, and the sealing structure is simple.

Description

technical field [0001] The invention belongs to the technical field of damping equipment, and in particular relates to a single-tube double-chamber reciprocating damper. Background technique [0002] A damper is a device that provides resistance to movement and consumes movement energy. It is widely used in aerospace, aviation, military industry, guns, automobiles and other industries. Dampers can generally be divided into: spring dampers, hydraulic dampers, pulse dampers, rotary dampers, wind dampers, viscous dampers, etc. Among them, the viscous damper is made according to the principle of fluid movement, especially when the fluid passes through the orifice, it will produce throttling resistance. It is a damper related to the speed of piston movement and is widely used. [0003] In the prior art, traditional viscous dampers all use a piston structure, which requires a matching complex sealing structure, which has disadvantages such as low linear velocity, low-pressure se...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the traditional viscous damper uses a piston structure, which requires a matching complex sealing structure, which has disadvantages such as low linear velocity, low-pressure seal failure, high cost, and troublesome maintenance. At the same time, the piston device with valve plate Not suitable for damping oils with particles such as electrorheology and magnetorheology

In addition, the cost of functional fluids such as electrorheological fluids and magnetorheological fluids is relatively high. When used in large quantities, device costs will increase and market competitiveness will decrease.

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