Passive low-frequency vibration isolator

Abstract

The invention relates to a passive low-frequency vibration isolator, which comprises an enclosed cylindrical base, wherein the top of the enclosed cylindrical base is provided with a through hole, and the inner side wall of the enclosed cylindrical base is uniformly provided and movably connected with cylinder bodies of three dampers; a center connecting rod is inserted into the through hole in the base, and the lower end of the center connecting rod is moveably connected with piston rods of the three dampers; the top of the base is uniformly provided with three mounting fixtures; the upper part of the center connecting rod is provided with a hexagonal center clamping piece which is uniformly provided and connected with one ends of three flat springs; the other ends of the three flat springs are connected with the three mounting fixtures respectively; and the top of the center connecting rod is provided with a bearing table. The passive low-frequency vibration isolator has obvious high static stiffness and low dynamic stiffness, reduces initial isolation frequency, can realize low-frequency vibration isolation and ultralow-frequency vibration isolation, has high static bearing capacity and reduces deformation; meanwhile, by optimizing the damping structure, the vibration isolator can automatically adjust damp according to working conditions to achieve effects of inhibiting resonance and resisting impact.

Description

technical field [0001] The invention belongs to the technical field of vibration control of electronic instruments and electromechanical equipment, and in particular relates to a passive low-frequency vibration isolator. Background technique [0002] During the transportation and normal use of electronic instruments and electromechanical equipment, vibration will inevitably occur due to external excitation or internal excitation brought by the operation of the electromechanical equipment itself, which will directly affect the normal use of precision instruments, and continuous vibration will also cause Fatigue damage of materials and environmental noise pollution. Especially on modern ships, the noise caused by the vibration will greatly reduce the enemy's detection distance, which is not conducive to the stealth of the ship. And with the continuous development of precision testing technology and precision machining technology, the isolation requirements for low-frequency b...

AI Technical Summary

Problems solved by technology

Due to the variability of actual working conditions and errors in design calculations, it is difficult for traditional vibration isolation and anti-shock devices to achieve ideal working performance

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