Rigidity-adjustable electromagnetic vibration isolator

Abstract

The invention aims to provide a rigidity-adjustable electromagnetic vibration isolator. The structure of a spring steel sheet portion is that an outer layer of spring steel sheets and an inner layer of spring steel sheets are distributed in a bilaterally symmetrical mode and are fixed between an upper fixing plate and a lower fixing plate respectively. Damping materials are filled between the laminated spring steel sheets. The structure of an electromagnet portion is that electromagnetic coils are installed on iron cores, the iron cores are fixed on the upper inner surface and the lower inner surface of an electrician pure iron mounting rack respectively, and the electrician pure iron mounting rack provided with the electromagnetic coils is fixed to the lower fixing plate of the vibration isolator through bolts. The structure of a movable permanent magnet portion is that two adjusting bolts are fixed on the upper fixing plate through nuts respectively, two protruded circular columns are arranged on the center of the upper surface and on the center of the lower surface of a permanent magnet fixing plate, two ring permanent magnets are fixed on the upper surface and the lower surface of a middle plate through the protruded circular columns, and the fixing plate provided with the permanent magnets is connected with the adjusting bolts through the adjusting nuts. According to the rigidity-adjustable electromagnetic vibration isolator, the advantage of good stability of a passive vibration isolator and the advantage of flexible application of an active vibration isolator are integrated.

Description

Technical field [0001] The invention relates to a vibration isolator, specifically a semi-active vibration isolator. Background technique [0002] There are a lot of vibration problems in power machinery, many of which are harmful to the equipment, and it is very important to try to reduce the harm of these vibrations. The complexity and difficulty of the vibration form bring many difficulties to the solution of this problem. Vibration isolation (vibration isolation for short) technology is the most widely used technology in the field of vibration control. Vibration isolation refers to the use of additional subsystems to separate the vibration source from the object to be damped, so as to reduce the vibration source to the vibration isolation object Impact. The additional subsystem is mainly composed of elastic elements and damping elements. Vibration isolation can be roughly divided into passive vibration isolation, active vibration isolation and semi-active vibration isolati...

AI Technical Summary

Problems solved by technology

Although the airbag has a very good vibration isolation effect, it generally can only bear vertical loads, so it is necessary to set up a corresponding guide mechanism to bear the lateral force, longitudinal force and moment, which increases the volume and layout difficulty

At the same time, certain requirements are put forward for sealing, which increases the cost

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