Inertia force vibration exciter

Abstract

The invention discloses an ultra-low frequency inertia force vibration exciter in a super-huge type structure. The exciter comprises a support and guide framework, a movement mass block and a driving system, wherein rails are arranged inside the support and guide framework, the movement mass block is arranged inside the support and guide framework, the driving system consists of a driving device and a transmission device connected with the driving device, and the driving device comprises a driving motor with a speed reducer. The ultra-low frequency inertia force vibration exciter is characterized in that the driving system is arranged inside the movement mass block and drives the movement mass lock to do reciprocating movement along the rails. The driving system consisting of the driving device and the transmission device is arranged inside the movement mass block to become one part of the effective movement mass, the exciting force is obtained through the reciprocating movement of the movement mass on the rails, and the total weight of the exciter is reduced; during the horizontal and vertical vibration excitation, the basic structure of the exciter is not changed, and the universality of the exciter is improved; and the transmission structure of the exciter is compact, so the stroke of the movement mass can be increased for enhancing the exciting force, and faults can be reduced.

Description

technical field [0001] The invention relates to a vibrating device, in particular to an inertial force vibrator. Background technique [0002] Accurate determination of the dynamic performance of civil engineering structures (buildings, bridges) is the basis for quantitative analysis of structural dynamic response, evaluation of structural seismic and wind resistance and performance (living, driving, etc.), and is the basis for testing the effectiveness of structural vibration reduction and vibration isolation measures. It is an important means and an important basis for revising structural design specifications. On-site steady-state excitation test is the most effective way to accurately obtain the structural dynamic characteristics (especially the damping ratio). It is of great significance and difficulty to carry out on-site steady-state excitation test of these structures, and there is no precedent in our country. [0003] The steady-state excitation method is to apply...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to overcome the problem that in the prior art, common rotating eccentric mass exciters cannot excite ultra-low frequency vibrations of super-large structures, while foreign ultra-low frequency exciters are too heavy and can only excite in a single direction. Propose a new ultra-low frequency inertial force exciter

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