Bellow-type mixed medium vibration isolating and absorbing unit

A technology of mixed medium and bellows, applied in the direction of shock absorbers, can solve the problems of the structure being difficult to meet the requirements of heavy-load low-frequency vibration isolation, the fatigue life of the bellows being reduced, and the instability of the bellows. Easy to use and maintain, and the effect of large bearing capacity

Inactive Publication Date: 2010-05-05
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 th

Method used

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  • Bellow-type mixed medium vibration isolating and absorbing unit
  • Bellow-type mixed medium vibration isolating and absorbing unit
  • Bellow-type mixed medium vibration isolating and absorbing unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 1 As shown, a bellows type mixed-medium vibration isolation shock absorber includes a bellows 1, and the two ends of the bellows 1 are welded on the upper end plate 2 and the lower end plate 3 to form a bellows container, and the bellows container Placed in the guide sleeve 4, the bottom of the bellows container and the guide sleeve 4 are fixedly connected by a set of bolts, and there is a gap between the side wall of the bellows 1 and the side wall of the guide sleeve 4 ;

[0038] The bellows container is provided with a circular opening 5, and the bellows container is filled with a liquid-solid mixed medium composed of an elastic unit body 6 and a liquid 7 through the circular opening 5, and sealed with countersunk bolts; The unit body 6 is a metal bellows welded and sealed at both ends, and the cavity of the elastic unit body 6 is filled with atmospheric nitrogen;

[0039] The top of the guide sleeve 4 is fixedly connected with a limit plate 8 to pre...

Embodiment 2

[0042] Such as figure 2 As shown, a bellows type mixed-medium vibration isolation shock absorber includes a bellows 1, and the two ends of the bellows 1 are welded on the upper end plate 2 and the lower end plate 3 to form a bellows container, and the bellows container Placed in the guide sleeve 4, the bottom of the bellows container and the guide sleeve 4 are fixedly connected by a set of bolts, and there is a gap between the side wall of the bellows 1 and the side wall of the guide sleeve 4 ;

[0043] The bellows container is provided with a circular opening 5, and the bellows container is filled with a liquid-solid mixed medium composed of an elastic unit body 6 and a liquid 7 through the circular opening 5, and sealed with countersunk bolts; The unit body 6 is a metal bellows welded and sealed at both ends, and the cavity of the elastic unit body 6 is filled with atmospheric nitrogen;

[0044] The bellows container is provided with an inner bellows 11, and the two ends ...

Embodiment 3

[0049] Such as image 3 As shown, a bellows-type mixed-medium vibration isolation damper includes a bellows 1, and the bellows 1 is a three-layer bellows formed by coaxial nesting of three multi-layer bellows with different cross-sectional radii. The two ends of each bellows 1 are respectively fixedly connected to the upper end plate 2 and the lower end plate 3 to form a bellows container, and the gap between the three-layer bellows 1 is filled with atmospheric air; the bellows container is placed in the guide In the sleeve 4, the bottom of the bellows container and the guide sleeve 4 are fixedly connected by a set of bolts, and there is a gap between the side wall of the bellows 1 and the side wall of the guide sleeve 4;

[0050] The bellows container is provided with a circular opening 5, and the bellows container is filled with a liquid-solid mixed medium composed of an elastic unit body 6 and a liquid 7 through the circular opening 5, and sealed with countersunk bolts; Th...

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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...

Claims

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Application Information

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IPC IPC(8): F16F11/00
Inventor 陈前滕汉东
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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