High-efficiency dry friction damping spring vibration isolator

Abstract

The invention discloses a high-effect dry friction damping spring vibration isolator and aims at providing a friction damping vibration isolator which is compact in structure, large in friction damp, high in load and good in environmental adaptation. According to the technical scheme, in a vibration environment, left friction pieces and right friction pieces of a disc-pressing upper cone spring (3) and a disc-pressing lower cone spring (6) perform reciprocating motion to axially extrude a right friction ring piece (4) and a left friction ring piece (9) on two sides, the left friction ring piece, the right friction ring piece, an upper guide umbrella disc (1) and a lower guide umbrella disc (5) are driven to perform constant friction motion on the inner wall of a housing (2), vibration mechanical energy is converted into heat energy so as to achieve vibration energy consumption and reduction. The high-effect dry friction damping spring vibration isolator utilizes low frequency of a conical spring and a damping characteristic of a symmetric semi-ring damping pad, can effectively inhibit spring fluctuation during high-frequency impact, also has composite multiple vibration isolation effect and has large damp under the low-frequency condition compared with a traditional rubber vibration isolator.

Description

technical field [0001] The invention relates to a high-efficiency dry frictional damping spring vibration isolator which is applied to the vibration reduction of the whole electronic equipment under the environment condition of large-scale and long-term vibration. Background technique [0002] The vibration isolator is an elastic-damping element combination structure connecting the equipment and the supporting base, which is used to attenuate the vibration energy transmitted from the supporting base to the equipment within a certain frequency range. Commonly used vibration isolators include metal spring isolators, rubber isolators, air spring isolators, wire mesh isolators, wire rope isolators and liquid damping isolators, etc., according to different engineering application purposes, Choose different vibration isolators to obtain different degrees of vibration reduction effect. In the practice of vibration reduction of electronic equipment, metal spring isolators, wire mes...

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Problems solved by technology

[0003] Among the known implementations in the art, Chinese patent application 02219084.8 discloses a friction damping shock absorber including a shaft, a friction plate, a steel mesh pad, a pressure plate and a spring, the pressure plate is fixedly connected to the shaft, and the friction plate is a semicircle shaped sheet, but limited by its frictional damping structure, it is difficult to significantly improve the frictional damping; in addition, the actual application results show that the axial vibration damping effect of the shell is worse than the radial vibration damping effect of the shell, and the X, Y, Z three-axis equivalent vibration isolation

[0004] In another embodiment known in the art, Chinese Patent Application No. 03212581.X discloses a non-linear dry-rubbing damping shock absorber comprising a housing, a friction top cover, a friction rod, a friction plate and a cylindrical spring, which The friction rod and the friction top cover are installed with a cantilever, and use a cylindrical spring, which has the advantages of large axial friction and damping of the cylindrical shell; the disadvantage of this patent application is that the load is small, and the radial vibration damping effect of the cylindrical shell is relatively good Difference

For the vibration isolator, after the metal rubber is selected, its damping performance is basically determined, and it cannot be adjusted during use.

When the damping design is too large, the metal rubber part is easy to heat up, resulting in excessive local temperature rise and premature failure

[0005] The vibration isolators / shock absorbers disclosed in the above patent applications are difficult to meet the long-term and reliable vibration reduction requirements of modern electronic equipment under large-scale and long-term vibration environmental conditions

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