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Viscous damper

A viscous damper and damper technology, applied in the direction of solid shock absorbers, etc., can solve the problems of structural sloshing, small initial stiffness of the damper, and low surface accuracy, so as to increase the initial stiffness, avoid liquid leakage, and reduce Effect of Surface Roughness Requirements

Inactive Publication Date: 2011-01-26
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The initial stiffness of the damper is small, which will lead to poor stability of the structure. When the external input load has not reached the set size, the structure will also shake
[0005] 2. The sealing effect is not good
It is sealed by the seal between the piston rod and the cylinder head, and there is relative movement between the piston rod and the seal during operation, which is easy to wear and leak, especially when the sealing material is aging or the surface accuracy of the moving parts is low. liquid phenomenon

Method used

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Embodiment Construction

[0021] see Figure 1~4 , The viscous damper of this embodiment consists of a cylindrical cylinder 1, a piston 2, a piston rod 3, an elastic body 5 and a damping medium 4. Wherein, the center of the piston 2 is provided with a through hole, and the piston rod 3 passes through the through hole and is welded integrally with it; a damping gap 6 is provided between the radial edge of the piston 2 and the cylinder body 1 (see image 3 ); the elastic body 5 is arranged on the two ends of the cylinder body 1 (equivalent to the end cap), and is integrated with the cylinder body 1 and the piston rod 3 through high-temperature vulcanization; the elastic body 5 is composed of an annular rubber material layer 5-1 It is formed by high-temperature vulcanization alternately stacked with annular thin steel plate layers 5-2 (see Figure 4 ), the ratio of its diameter to width is 2 to 4; the cylinder body 1 is provided with a perfusion hole, and the damping material 4 is poured into the inner ca...

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Abstract

The invention relates to a vibration damper, in particular to a viscous damper taking a viscous substance as a vibration damping medium. End covers at the two ends of a cylinder (1) of the damper are elastic bodies (5); the two elastic bodies (5), the cylinder (1) and a piston rod (3) are vulcanized into a whole at high temperature; the elastic body (5) consists of an annular viscoelastic material layer (5-1) and an annular sheet steel layer (5-2) which are alternately laminated and vulcanized at high temperature; and the ratio of the diameter to width of the elastic body (5) is 2 to 4. In the damper of the invention, the elastic bodies (5) at the two ends of the cylinder (1), the cylinder (1) and the piston rod (3) are vulcanized into a whole to form a viscoelastic damper, so that the initial rigidity of the whole damper is remarkably improved.

Description

technical field [0001] The invention relates to a shock absorber, in particular to a shock absorber using a viscous substance as a shock absorber. Background technique [0002] In terms of structure, the viscous damper is equivalent to a piston cylinder whose working medium is a viscous substance, and is widely used in machinery, construction and other fields. The control mechanism of the viscous damper is to use the working medium to convert part of the energy transferred from the structure into heat energy and dissipate it during the process of compression deformation or high-speed flow, so as to alleviate the impact of external loads, reduce structural vibration, and protect structural safety. the goal of. [0003] The utility model patent No. 02260101.5 discloses a "viscous damper", which is a double piston rod equal-stroke piston cylinder composed of a cylinder body, a piston, a piston rod and a cylinder head, wherein the cylinder The body is filled with viscous dampi...

Claims

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Application Information

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IPC IPC(8): F16F9/30
Inventor 周云吴从晓汪大洋
Owner GUANGZHOU UNIVERSITY
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