Low-temperature-resistant durable vibration rubber shock absorber

Abstract

A low-temperature-resistant durable vibration rubber shock absorber comprises an installation connecting element, a rubber shock-absorbing pad, a limiting bush, a limiting gasket and the like. According to the low-temperature-resistant durable vibration rubber shock absorber, vibration and impact energy is converted into heat and deformation energy of a rubber material through deformation of a rubber part, and accordingly a shock-absorbing function is achieved on a lightning suppressor. Besides, the shock absorber can bear the torsional bending function caused by inconsistent vibration, so that a lightning suppressor installation plate is in a rigid modal at low frequency, and damage caused by torsional bending of the installation plate to the suppressor is avoided. The designed installation connecting element effectively increases the thickness of the lightning suppressor installation plate, and space is provided for design and installation of the shock absorber. Damping rubber is vulcanized in an installation hole, used for assembling the shock absorber, of the installation connecting element, contact stress of the damping rubber and the rubber shock-absorbing pad is reduced, and durability of the shock absorber is effectively improved.

Description

technical field [0001] The invention relates to a rubber vibration isolator, in particular to a low temperature resistant and durable vibration rubber vibration absorber. Background technique [0002] The thickness of the lightning suppressor mounting plate is only 1mm, which is a thin plate structure. At present, the shock absorbing structures commonly used in the damping and vibration reduction treatment of thin plate structures of lightning suppressors are mainly T-type shock absorber structures and metal rubber composite shock absorber structures. When solving vibration and shock problems in lightweight electronic device structures, the following problems are often faced: [0003] Such as figure 1 As shown, the traditional T-shaped rubber shock absorber structure is composed of a rubber shock absorber, a metal limit washer and a limit bushing. The limit bush and the limit washer are used together to play the role of limit and installation. . However, there are certain...

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Problems solved by technology

However, there are certain requirements for the thickness of the installation flange of the damped equipment, generally not less than 3mm, so the installation space of the lightning suppressor is insufficient

In addition, because the rigidity of the mounting flange is much greater than the rigidity of the rubber material, and the contact part with the vibration-damping pad is at right angles, the root of the vibration-damping pad forms stress concentration and bears a large dynamic load. Under long-term durable vibration conditions, Will cause the root of the shock absorber to tear, such as image 3 shown

[0004] like figure 2 As shown, the metal-rubber composite shock absorber structure can be designed to achieve three-way equal frequency, which is convenient to use and install, but requires a large installation space and brings a large additional weight, and due to the non-polarity of the rubber material, the adhesion between rubber and metal The bonding strength is limited, and the bonding strength decreases under low temperature conditions, and debonding is prone to occur under the action of durable dynamic loads. If the debonding is severe, the shock absorber may completely lose its vibration damping function. Existing rubber shock absorbers generally operate at low temperature- When vibrating at 55°C for more than 30 minutes, damping material fatigue damage or damping material and metal debonding damage will occur, resulting in catastrophic consequences for the damped equipment. Therefore, it is not suitable for damping and vibration reduction of lightning suppressors

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