Double-compressed-spring cylinder centripetal friction-variable damper with complex damping feature
A technology of damper and double compression spring, which is applied in the direction of building components, shockproof, etc., can solve the problem of the performance stability of the damper's multiple damping friction interface, and achieve the effect of ensuring performance
Inactive Publication Date: 2016-05-25
BEIJING UNIV OF TECH
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[0003] In order to solve the above-mentioned defects of the existing dampers, the present invention proposes a double compression spring cylindrical centripetal variable friction
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[0039] The hysteretic curve of the damper is obtained through the test device. When the displacement amplitude is 13mm, the damping force can reach about 3000N. In engineering applications, dampers with similar structure, shape and principle can be designed according to actual needs. Compression springs with different rigidities can achieve different output tonnages and displacements.
[0040] The above is a typical embodiment of the present invention, and the implementation of the present invention is not limited thereto.
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The invention relates to a double-compressed-spring cylinder centripetal friction-variable damper with the complex damping feature. The double-compressed-spring cylinder centripetal friction-variable damper comprises a friction sleeve, two sleeve outer stop blocks, a middle sliding shaft, a sliding-shaft positioning stop block, two friction assemblies and two compressed springs. The friction sleeve and the two sleeve outer stop blocks define a circular cylindrical cavity. Each wedge-shaped sliding friction block comprises a quadrant-shaped friction face and two quadrant-shaped slopes. Each pressing wedge-shaped block comprises a circular slope. The four wedge-shaped sliding friction blocks define a cylinder, and every two pressing wedge-shaped blocks with the opposite slopes form one friction assembly. The sliding-shaft positioning stop block, the compressed springs, the pressing wedge-shaped blocks and the sleeve outer stop block on the right side are arranged on the middle sliding shaft in a sleeving mode. The cavity is divided by a circular baffle in the middle of the middle sliding shaft into a left part and a right part. The damper has the complex damping feature, complex damping force is linearly changed along with the deformation amplitude, viscous damping force is linearly changed along with the deformation speed, the friction interface is stable in performance, and the cost performance is good.
Description
technical field [0001] The invention relates to a double compression spring cylindrical centripetal variable friction damper with complex damping characteristics, 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 da...
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CPCE04B1/98
Inventor 彭凌云常健彭珺洁陆宜倩秦丽
Owner BEIJING UNIV OF TECH
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