Modular self-balancing type inerter damper

Abstract

The invention relates to a modular self-balancing inerter damper. Transmission gears, transfer discs and screw rod nuts are sequentially and symmetrically arranged on the two sides of a right-hand threaded and left-hand threaded screw rod from the middle to the end parts correspondingly, the transmission gears are rotationally installed on the screw rod nuts connected with the right-hand threadedand left-hand threaded screw rod through the transfer discs and rotate along with the screw rod nuts, two support bearings are arranged at the two ends of the right-hand threaded and left-hand threaded screw rod in a sleeving mode respectively and connected with the screw rod nuts to serve as fixed supports of the damper; and a bearing plate support is located on the middle position of the right-hand threaded and left-hand threaded screw rod, and an upper main gear and a lower main gear are respectively arranged on a central bearing at the upper part of a bearing plate and under a central bearing at the lower part of the bearing plate, and are respectively connected with the central bearing and the bearing plate through bolts. According to the modular self-balancing inerter damper, a maingear rotates around the axis in the opposite rotation direction through the right-hand threaded and left-hand threaded screw rod, the electromagnetic force and the counter-acting force of the electromagnetic force act on the screw rod in the equivalent opposite direction, the torques in the rotation direction around the axis are mutually offset, and the self-balancing performance of the screw rodis achieved.

Description

technical field [0001] The application relates to the field of civil engineering, in particular to a modular self-balancing inertial damper. Background technique [0002] As a new and efficient structural passive vibration control means, the inertial damper is an energy dissipation and vibration reduction device made of the damping effect of eddy current. It has non-contact, no mechanical friction and loss, no lubrication, long service life, and easy installation. At present, the eddy current damper is mainly used as the damping element of the tuned mass damper and is gradually being applied in the field of passive vibration control of civil engineering structures. [0003] According to the principle of eddy current, the generation of eddy current damping must have the conductor plate to cut the magnetic induction line movement, that is, there is relative motion between the magnetic field source and the conductor plate, and the magnitude of the electromagnetic force generat...

AI Technical Summary

Problems solved by technology

The pure tension system of the central energy-dissipating member is a better damper installation method to meet the needs of rapid seismic reinforcement. If the eddy current damper can be introduced into the system for use, the easy installation performance of the eddy current damper will be better utilized. However, since the cable can only provide tension to the central energy-dissipating member and cannot limit the rotation, performance requirements such as light weight and self-balancing are put forward for the eddy current damper. Obviously, the plate-type and pendulum-type dampers do not meet the requirements. At present, there are screw rods Although the rotary eddy current damper has a certain speed amplification capability, the threaded screw type rotary eddy current damper must use the fixed end to limit the rotation of the screw and the stator at the same time, so that the damper can work, which makes it It cannot be used in a pure tension system, the connection of the cable cannot provide such a braking torque

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