Bellow-type mixed medium vibration isolating and absorbing unit

Abstract

The invention provides a bellow-type mixed medium vibration isolating and absorbing unit comprising a bellow. Both ends of the bellow are fixedly connected to an upper end plate and a lower end plate to form a bellow container; the bellow container is arranged in a pilot sleeve; the bottom of the bellow container is fixedly connected with the pilot sleeve; a gap is reserved between the side wall of the bellow and the side wall of the pilot sleeve; the bellow container is provided with an opening; a liquid-solid mixed medium which consists of elastic unit bodies and liquid is filled in the bellow container; the top of the pilot sleeve is fixedly connected with a limit disc for preventing the upper end plate from slipping; an upper connecting rod is connected with the upper end plate after passing through the limit disc; and a lower connecting rod is connected with the bottom of the pilot sleeve. By the scheme of the invention, the leakage problem of liquid and gas is thoroughly avoided. The mixed medium vibration isolating and absorbing unit has the advantages that the carrying capacity is high, the natural frequency is low, the structure is simple, the use and the maintenance are convenient and the vibration isolating and absorbing performance can be flexibly regulated by increasing and decreasing the number of the elastic unit bodies.

Description

technical field [0001] The invention relates to a bellows type mixed-medium vibration isolation and shock absorber, in particular to a heavy-duty low-frequency vibration isolation and shock absorber applied to heavy mechanical equipment. Background technique [0002] In order to control the vibration transmission caused by heavy power units and mechanical equipment, the use of vibration isolation structures is one of the most effective methods. The vibration isolation, vibration reduction and shock resistance technology of heavy-duty power machinery equipment on the surface and underwater ships has always been highly valued. Therefore, the requirements for vibration isolation and vibration reduction technology for ship power machinery systems continue to increase, and the requirements for vibration It is developing in the direction of large capacity, low natural frequency, stable and reliable performance, good impact resistance, long service life and easy installation, use a...

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Problems solved by technology

[0003] The bellows-type hydraulic shock absorber of patent publication number CN1239197 overcomes the problem of oil leakage of the piston-type hydraulic shock absorber, and it makes full use of the characteristics of small axial stiffness and easy deformation of the bellows; Disturbance and load have a supporting effect. When the load is too large or impacted, the bellows will have a large deformation. At this time, the bellows will lose stability and buckle, which will lead to work failure. The fatigue life of the tube will also be reduced; in addition, due to the lack of guiding measures, the eccentricity of the load can easily cause the instability of the bellows type hydraulic shock absorber, so the structure of this patent is difficult to meet the requirements of heavy-duty low-frequency vibration isolation

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