Composite spring damping adjustable vibration isolator

Abstract

The invention provides a composite spring damping adjustable vibration isolator. The composite spring damping adjustable vibration isolator comprises a shell provided with an opening at the upper end, a bottom plate is arranged below the shell, a connecting shaft is arranged in the shell, the upper end of the connecting shaft is capable extending out of the opening of the shell; a shaft shoulder is arranged at the middle part of the connecting shaft, a first belleville spring, an upper metal wire net pad and a baffle plate are sequentially arranged between the upper surface of the shaft shoulder and the top wall of the shell from the bottom to the top, the upper surface of the baffle plate is fitted with the top wall of the shell, a second belleville spring and a lower metal wire net pad are sequentially arranged between the lower surface of the shaft shoulder of the connecting shaft and the bottom plate from top to the bottom, and the bottom surface of the lower metal wire pad is fitted with the bottom plate; the lower end of the connecting shaft is provided with an inner bore, and a spiral spring is arranged in the inner bore; and a lining is arranged between the outer diameter of the spiral spring and the pore wall of the connecting shaft. The vibration isolation performances in three axial directions of the vibration isolator are less in difference, the damping can be independently adjusted, the vibration isolation performance and the performance stability are improved, and the use range of the vibration isolator is expanded.

Description

Technical field [0001] The invention relates to a vibration isolation and buffer device for equipment, in particular to a composite spring damping adjustable vibration isolator. Background technique [0002] The structure of the existing metal wire mesh three-way vibration isolator is as follows figure 1 As shown, this type of vibration isolator consists of a connecting shaft 1, a baffle 2, an upper wire mesh pad 3, a shell 4, a lower wire mesh pad 5, a spiral spring 6, a bottom plate 7 and four Composed of 8 hollow rivets. During installation, the connecting shaft 1 is connected to the vibration isolation equipment through screws, and the mounting screws in the hollow rivet 8 are connected to the foundation. The axial stiffness of the vibration isolator is composed of the upper wire mesh pad 3, the lower wire mesh pad 5 and the spiral spring 6 in parallel. The radial stiffness is only provided by the upper wire mesh pad 3, and the damping is mainly provided by the wire mesh pad...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the disadvantages of poor vibration isolation effect, unstable performance and small application range of existing vibration isolators, the present invention provides a composite spring damping adjustable vibration isolator. The difference in vibration performance is small and the damping can be adjusted separately, which improves the vibration isolation effect and performance stability, and expands the use range of the vibration isolator

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