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Dual-compressed-spring flat plate type-centripetal variable friction damper

A variable friction, flat-plate technology, applied in the direction of spring/shock absorber, shock absorber, shock absorber, etc., can solve the problems of damper complex damping friction interface performance stability, etc., to achieve the effect of ensuring performance stability

Inactive Publication Date: 2016-03-09
BEIJING UNIV OF TECH
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  • Abstract
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Problems solved by technology

[0003] In order to solve the above-mentioned defects of the existing damper, the present invention proposes a double compression spring plate type-centripetal variable friction damper, which solves the problems of the damper's multiple damping characteristics and the performance stability of the friction interface

Method used

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  • Dual-compressed-spring flat plate type-centripetal variable friction damper

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Embodiment 1

[0038] In order to improve the load-carrying capacity and deformation capacity of the damper and prolong the service life of the compression spring, the compression spring used is a die spring made of high-performance chromium alloy spring steel , height 50mm, outer diameter 30mm, inner diameter 15 (16) mm, stiffness 35 (100) N / mm, friction assembly length 36 mm, width 59 mm, two sets of compression springs and friction assemblies work sequentially in the actual test , improving its anti-fatigue ability. The plate cavity, end plate, intermediate connecting shaft, extruded wedge block and wedge-shaped sliding friction block are all made of high-performance steel, and the friction surface is specially treated to ensure that the friction coefficient between the wedge-shaped sliding friction block and the inner wall of the friction plate reaches A certain value meets the design requirements. The slope angle of the wedge block adopts π / 4. The total length of the cavity is 237mm, ...

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Abstract

The invention relates to a dual-compressed-spring flat plate type-centripetal variable friction damper which comprises two friction plates, two fixed plates, two end plates, a positioning plate, wedge sliding friction blocks, an extrusion wedge block, a middle connecting shaft and two compressed springs. The two friction plates, the two fixed plates, the two end plates and the positioning plate form a plate-type cavity. A variable friction device is arranged inside the cavity. The variable friction device is composed of a pair of friction assemblies, the pair of compressed springs and the middle connecting shaft. Each wedge sliding friction block comprises a friction face and two slopes. The extrusion wedge block comprises an upper slope and a lower slope. The extrusion wedge block with the two opposite slopes and the two wedge sliding friction blocks form one friction assembly. The damper has the advantage of complex damping, the complex damping force linearly changes along with transformation amplitude, viscous damping force linearly changes along with deformation velocity, a friction interface is stable in performance, and the cost performance is better.

Description

technical field [0001] The invention relates to a double compression spring plate type-centripetal variable friction damper, which can be applied to vibration reduction control of engineering structures and belongs to the technical field of vibration control. Background technique [0002] The vibration dampers used in the field of vibration reduction and isolation of engineering structures can be roughly divided into two categories: velocity-related and displacement-related. Displacement-related dampers mainly include various metal dampers that use the plastic deformation of metal materials to dissipate energy. Velocity-dependent dampers currently mainly include viscous dampers that use viscous fluid to generate damping force to dissipate energy through damping holes and those that use the plastic capacity of viscoelastic materials to dissipate energy. Viscoelastic damper. Most displacement-dependent dampers have a clear threshold of damping force that starts to consume ene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F7/104
CPCF16F7/104
Inventor 彭凌云常健于泽秦丽
Owner BEIJING UNIV OF TECH
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