Gear transmission friction damper and assembly construction process

Abstract

The invention belongs to the technical field of civil engineering and relates to a gear transmission friction damper and an assembly construction process. The gear transmission friction damper comprises a lower connecting plate, a lower friction piece, a main plate, an upper friction piece, rear angle steel, front angle steel, a lower rack, a triple gear, a double connecting rod, an upper rack, a U-shaped connecting piece, high-strength bolts, limiting bolts, a gear rotary shaft and a positioning pin. The main plate is located on the lower connecting plate as well as between the front angle steel and the rear angle steel which are arranged in a separating mode, the lower friction piece is adhered to the upper surface of the lower connecting plate, and the upper friction piece is adhered to the lower surfaces of the rear angle steel and the front angle steel. The triple gear, the upper rack, the lower rack and the double connecting rod are located between the rear angle steel and the front angle steel, the lower rack is adhered into a groove of the main plate, the upper rack is adhered into a groove of the double connecting rod, and the U-shaped connecting piece is welded to the end of the double connecting rod. The displacement enlarging type friction damper utilizes the gear transmission principle to enlarge the sliding friction displacement of the damper, and the energy-dissipating capacity is high.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and relates to an energy dissipation and shock absorbing device, in particular to a friction damper which provides amplified displacement through gears. Background technique [0002] Energy dissipation and shock absorption technology is to connect dampers in parallel in the lateral force-resistant members of the structure, and the dampers consume most of the seismic energy to ensure the safety of the main structure. It is an active and effective anti-seismic strategy. The displacement of the existing damper during operation is usually equal to the relative displacement of the connection point, so the damper should be installed in a position where the relative deformation of the structure is relatively large. If the relative deformation of the structure is small, the damper cannot effectively perform its energy dissipation function due to the small displacement . For this reason, schola...

AI Technical Summary

Problems solved by technology

The displacement of the existing damper during operation is usually equal to the relative displacement of the connection point, so the damper should be installed in a position where the relative deformation of the structure is relatively large. If the relative deformation of the structure is small, the damper cannot effectively perform its energy dissipation function due to the small displacement

For this reason, scholars have developed a new technology to make the displacement of the damper greater than the relative displacement of the connection point. For example, the patent with the publication number CN 104314192A discloses a damper with a displacement amplification device, that is, the leverage principle is used to increase the displacement of the damper. Displacement, but the transmission efficiency of the lever is low, and only when the size of the damper is large can a large displacement be obtained, which causes inconvenience in installation and construction, and also affects the use function of the building

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