Shaft end metal shock absorber

Abstract

A shaft end metal shock absorber comprises a shaft end flange base, a shaft end base and a gland, and is characterized by further comprising an axial shock absorbing structure and a radial shock absorbing structure, wherein according to the axial shock absorbing structure, an annular isolating shock absorbing body is arranged on the shaft end flange base, and the shock absorbing body is limited to the shaft end flange base through the gland and an outer gland; according to the radial shock absorbing structure, an annular shock absorbing body is arranged on the shaft end base, the shock absorbing body is limited to the shaft end base through a special-shaped cover and a T-shaped cover, and a check ring is connected between the edge of the shaft end base and the edge of the shock absorbing body; the axial shock absorbing structure and the radial shock absorbing structure are connected through the gland, the outer gland, the T-shaped cover and the special-shaped cover and are tightly connected mutually through the shaft end base and the check ring in a threaded mode to form a complete shock absorbing system. The structures move relative to each other to form friction damping, rigidities in different directions are approximately the same, the inherent frequencies are approximately the same, the inherent frequencies are lower, and accordingly the shock absorber can achieve the ideal shock absorbing effect in all directions. The inherent frequencies are below 20Hz, the resonance amplification factor is smaller than 2, and the shock absorbing effect is larger than 80%.

Description

technical field [0001] The invention relates to the technical field of vibration, in particular to a shaft-end metal shock absorber installed at both ends of a shaft or a shaft-like structure. Background technique [0002] Most of the consequences of vibration are harmful. In order to reduce the harmful consequences of vibration, a carrier is needed to isolate or reduce the harm of vibration. This carrier is called a shock absorber. Since the shock absorber was produced, it has been widely used in anti-vibration systems in aviation, aerospace, ships, large machinery and chemical industries due to its unique structure and function. In the prior art, shock absorbers are mostly rubber products or a combination of metal and rubber products. Although the shock absorption effect is good, they also expose many shortcomings when they play a role in shock absorption, such as: limited by structure and raw materials, The installation method is single and fixed, the vibration reduction...

AI Technical Summary

Problems solved by technology

In the prior art, most of the shock absorbers are rubber products or a combination of metal and rubber products. Although the shock absorption effect is good, they also expose many shortcomings while reducing vibration, such as: limited by structure and raw materials, The installation method is single and fixed, the vibration reduction is also in a single direction, and its natural frequency is high, the damping is small, and the resonance amplification factor is high during resonance, which will inevitably affect the overall vibration reduction effect. More importantly, rubber products are restricted by the rubber material itself. , easy to age, and the service life of the product is short; the operating temperature is -30~+85°C, and the ability to adapt to the ambient temperature is poor, especially the use requirements under harsh conditions.

In recent years, with the development of science and technology, all-metal shock absorbers have appeared. However, the problems of installation methods and application conditions have not been solved. The installation form can only be supported by the bottom, and the vibration reduction effect of the side-mounted installation method occasionally appears. It is also a big discount. Due to the limitation of the installation method, most systems will be complicated and increase the manufacturing cost. It is even more inappropriate for the long axis.

Moreover, the metal parts of the existing shock absorber are made of stainless steel or carbon steel, which has poor impact resistance and cannot meet the requirements for quality requirements or strong corrosive environments.

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