Solid viscous damper and application thereof in comb plate type telescopic device

Abstract

The invention belongs to an accessory device of a bridge expansion device, and particularly relates to a solid viscous damper and application thereof in a comb plate type expansion device. The solid viscous damper comprises a cylinder body and a cylinder rod, wherein the lower end of the cylinder body is closed, the top end of the cylinder body is open, the cylinder rod is arranged in the cylinderbody in the longitudinal direction, an elastic-plastic body is arranged in the cylinder body, the middle and the lower end of the cylinder rod are buried in the elastic-plastic body, and a fit clearance is formed between the lower end of the cylinder rod and the bottom of the cylinder body. The problems in the prior art that a telescopic device is prone to being damaged under the action of vehicle impact and the like, and noise is large are solved. The solid viscous damper has the advantages of being simple in structure, convenient to maintain and operate, capable of effectively reducing noise and reducing vibration damage to the telescopic device due to external factor changes and vehicle impact and the like.

Description

technical field [0001] The invention belongs to an accessory device of a bridge expansion device, in particular to a solid viscous damper and its application in a comb-tooth plate type expansion device. Background technique [0002] The bridge structure will be elongated or shortened due to factors such as temperature changes, concrete shrinkage, and settlement and rotation of creeping bridge piers. In order to allow vehicles to pass the bridge deck smoothly and meet the needs of deformation, expansion joint devices must be installed on the bridge to meet the needs of deformation. The displacement requirements of the bridge. The stiffness of the bridge at the position of the telescopic device changes suddenly, and the vehicles continue to impact the telescopic device, and the vibration of the tooth plate produces noise. At the same time, the long-term impact causes damage to the concrete structure and the tooth plate at the lower part of the telescopic device. In severe case...

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Problems solved by technology

[0009] The applicant did not find the same or similar patent literature reports in the domestic patent database. At present, there is no relevant research on the use of viscous dampers to achieve vibration reduction and noise reduction of telescopic devices. There is no previous research on the application of viscous dampers For bridge telescopic devices, only buffer components such as rubber and springs are used in public literature reports and practical applications, and their actual vibration and noise reduction and impact mitigation effects are relatively poor.

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