Self-resetting shearing type lead damper and working method thereof

Abstract

The invention relates to a self-resetting shearing type lead damper and a working method thereof. The damper comprises a bottom plate and a top plate which are oppositely arranged in the vertical direction, wherein at least two first guide plates which are oppositely arranged at intervals are vertically arranged on the upper surface of the bottom plate, second guide plates close to the first guideplates are vertically arranged on the lower surface of the top plate, the first guide plates and the second guide plates are vertically arranged in a staggered mode, at least one first groove hole isformed in each first guide plate, second groove holes are formed in the second guide plates, metal blocks are embedded in the first groove holes and the second groove holes, a guide rod and a belleville spring sleeving the guide rod are arranged at the position, between the two first guide plates, of the upper surface of the bottom plate, a guide sleeve arranged on the periphery of the guide rodin a sleeving mode is arranged at the position, between the two second guide plates, of the lower surface of the top plate, and the flange of the lower end of the guide sleeve is tightly attached to the upper surface of the belleville spring. The damper has good energy dissipation performance, and fatigue damage cannot occur, so that the service life of the damper is prolonged.

Description

Technical field: [0001] The invention relates to a self-resetting shear type lead damper and a working method thereof. Background technique: [0002] Existing conventional dampers have poor energy dissipation effect in earthquakes, are easily damaged, expensive to maintain and replace, and have reduced seismic performance after maintenance. [0003] For example, on May 08, 2018, the State Intellectual Property Office of China authorized and announced the utility model patent of "damping spring composite shock absorber" (notification number: CN 207333543 U). The damping spring composite shock absorber disclosed in this patent scheme includes Bottom plate, the upper end surface of the bottom plate is provided with a first sleeve, the first sleeve is vertically provided with a guide rod, the outer wall of the guide rod is provided with a spring, one end of the spring is connected to the first sleeve, The other end is connected with the second sleeve sleeved on the guide rod. T...

AI Technical Summary

Problems solved by technology

The invention has various forms of energy consumption. In the first stage, energy is consumed by breaking the shear energy-dissipating disc. In the second stage, when the shear energy-dissipating disc is damaged, it can also rely on stretching or compressing the shape memory alloy. The bead coil can dissipate energy to prevent the damper from losing its energy-dissipating effect; the defect of this technical solution is that the shape memory alloy bead coil has limited energy dissipation capacity, and the price of the shape memory alloy is high, which is not conducive to popularization in practical applications

[0005] Another example is that on September 30, 2015, the State Intellectual Property Office published a patent application for a "self-resetting lead squeeze damper" (notification number: CN 204676725 U). The technical solution disclosed in this patent application is a The self-resetting lead squeeze damper is composed of four groups of damping units with the same structure hinged sequentially through the connecting pins. The damping unit has an upper plate, a middle plate and a bottom plate connected in turn through the pin shafts, and the upper plate and the middle layer. The main body of the plate and the bottom plate is a circular structure, and a connecting handle is integrally formed on the side of the circular structure. The structure of the upper plate and the bottom plate is the same as that of a disc-shaped structure with a central through hole in the circular structure. The circular structure part of the middle layer is a circular structure, and there is a limit bump protruding toward the center of the ring on the inner wall of the ring structure of the middle layer. The defect of this technical solution is that once the middle layer protrudes The limit protrusion and the outwardly protruding edge of the star-shaped pull-out structure will be sheared and damaged under heavy load, and the energy dissipation and shock absorption of lead extrusion cannot be realized. Moreover, the structure of the component is complicated, and it is not easy to damage it once it is damaged. replace

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