An anti-vibration and impact-resistant back vibration isolator

Abstract

The invention relates to an anti-vibration impact-resistant rear part vibration isolator. The anti-vibration impact-resistant rear part vibration isolator comprises a shell and a central shaft, wherein a set of buffer adjustment device is arranged between each of the two ends of the central shaft and the corresponding inner wall of a hollow cavity; each buffer adjustment device comprises a rotary cover which covers the opening part of one end of the hollow cavity of the shell, a locking nut which is fixedly connected with the corresponding end part of the central shaft through threads and an open ring, a conical ring, a damping slide sheet, a spring sleeve, a first main spring and a complex spring which are sequentially in butt joint and pressing fit in a mutual match manner through the rotary cover, the locking nut and the inner wall of the shell; when the vibration isolator vibrates horizontally, the damping force of a damper is linear, so that a better vibration isolation effect is achieved; and during impact, the damping force of the damper is non-linear, so that a better buffering effect is achieved.

Description

technical field [0001] The invention relates to a vibration isolator, specifically a vibration-resistant and impact-resistant back vibration isolator, which belongs to the technical field of vibration-isolation protection equipment manufacturing. Background technique [0002] With the development of modern military and the continuous upgrading of weapons and equipment, higher requirements are put forward for electronic equipment, especially when the equipment is subjected to a large impact force, a large overturning force is generated, and the vibration isolator installed on the back of the electrical equipment is required to have better anti-corrosion Impact performance, to ensure that electronic equipment can work normally without damage. [0003] The back vibration isolator currently used in the market is a variable damping back vibration isolator with adjustable stiffness. The patent application (patent) number for this vibration isolator is CN204610661U. In actual use ...

AI Technical Summary

Problems solved by technology

[0003] The back vibration isolator currently used in the market is a variable damping back vibration isolator with adjustable stiffness. The patent application (patent) number for this vibration isolator is CN204610661U. In actual use and test verification, it is found that the vibration isolator has the following defects:

[0004] 1. In Example 1 of this patent, there is no cushioning structural part inside the back vibration isolator. When the equipment is subjected to a large impact, the cushioning effect is poor only by relying on the spring, and the spring is easily damaged by overload; although there is a cushioning pad in Example 2 , but the buffer pad is only subjected to the local impact force from the step of the inner adjusting screw sleeve, the force bearing area is small and the force is uneven, the buffer pad is easily damaged, and the buffer effect is poor

[0005] 2. The outer adjusting screw sleeve and the inner adjusting screw sleeve are in plane-to-plane contact, so that the central axis cannot be tilted at a certain angle, which may easily lead to excessive force and deformation of the outer adjusting screw sleeve

[0006] 3. There is no gap between the damping cone ring and the central axis. When the central axis of the back vibration isolator moves in translation, the damping value increases nonlinearly, which is good for buffering, but when the vibration isolator vibrates steadily, the vibration isolation effect is poor.

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