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A quasi-zero stiffness vibration isolator with energy recovery function

An energy recovery, quasi-zero stiffness technology, applied in shock absorbers, shock absorbers, and mechanical energy control. Small, the effect of reducing the natural frequency

Active Publication Date: 2021-08-03
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies in the prior art, the present invention provides a quasi-zero-stiffness vibration isolator with energy recovery function. Under the requirement of ensuring the quasi-zero stiffness, the vibration isolator takes up a large space laterally and cannot be used in the space Application problems in places with high requirements, and use the generator to absorb the useless vibration energy of the vibration isolation object to realize energy recovery

Method used

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  • A quasi-zero stiffness vibration isolator with energy recovery function
  • A quasi-zero stiffness vibration isolator with energy recovery function
  • A quasi-zero stiffness vibration isolator with energy recovery function

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Such as figure 1 As shown, a quasi-zero stiffness vibration isolator with energy recovery function includes a housing 2, a positive stiffness mechanism, a negative stiffness mechanism, an energy recovery mechanism and an adjustment mechanism; the positive stiffness mechanism includes a rack shaft 1 and a main spring 5; The negative stiffness mechanism includes a gear camshaft 7, a strut 4 and an auxiliary spring 3; the energy recovery mechanism includes a gear pair and a generator 10, and the gear pair is composed of a transmission bull gear 8 and a transmission pinion 9; the adjustment mechanism is an adjustment bolt 6.

[0029] Such as figure 1 As shown in (a), the housing 2 is hollow, and the two ends of the rack shaft 1 are connected inside the housing 2 through sliding bearings. The end of the rack shaft 1 is in contact with the upper end of the main spring 5, and the lower end of the main spring 5 is in contact with the adjustment bolt 6. , the adjusting bolt 6 i...

Embodiment 2

[0043] The difference from Embodiment 1 lies in the installation position of the main spring 5 that provides positive stiffness. In this embodiment, the main spring 5 is installed outside the housing 2, and the corresponding adjustment bolt 6 for adjusting the balance position becomes an adjustment nut. Such as image 3 As shown, the main spring 5 is sleeved on the upper end of the housing 2, the lower end of the main spring 5 is in contact with the adjusting nut sleeved on the housing 2, the upper end of the main spring 5 is in contact with the upper end of the rack shaft 1, and the inner thread of the adjusting nut is in contact with the housing. 2. When the external thread is matched and the adjusting nut is turned, the adjusting nut moves up and down along the central axis of the housing 2. During the above-mentioned movement, the main spring 5 is always in a compressed state; the upper end of the rack shaft 1 is provided with a mounting hole. The end of the housing 2 is a...

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Abstract

The invention provides a quasi-zero-stiffness vibration isolator with energy recovery function, which belongs to the technical field of vibration isolation. The quasi-zero-stiffness vibration isolator consists of a shell, which is connected with a gear camshaft and a rack shaft whose axes are perpendicular to each other, and the gear camshaft cooperates with the rack shaft; a slideway symmetrical to the axis of the gear camshaft is provided on the outside of the shell , the sliding column is embedded in the slideway, the sliding column is in contact with the auxiliary spring, and the sliding column is also in contact with the cam end of the gear camshaft; the adjustment mechanism is set at one end of the housing, and contacts the rack shaft through the main spring; the gear camshaft is far away from the cam end The gear pair is connected at the place, and the gear pair is fixedly connected with the generator. The elastic direction of the auxiliary spring with negative stiffness provided by the invention is parallel to the elastic direction of the positive spring with positive stiffness, so that the transverse size of the vibration isolator is greatly reduced, and it can be applied to places with high space requirements; the invention can also transmit motion through gear transmission To the generator to realize power generation and energy recovery.

Description

technical field [0001] The invention belongs to the technical field of vibration isolation, and in particular relates to a quasi-zero stiffness vibration isolator with energy recovery function. Background technique [0002] The advancement of science and technology has promoted the development of precision instruments, and precision measuring instruments have higher and higher requirements for vibration control. In recent years, the geometric nonlinear problems in engineering applications and the research and design of vibration isolators have attracted extensive attention from scholars at home and abroad. The quasi-zero stiffness vibration isolator makes the stiffness near the equilibrium position close to zero through the parallel connection of positive and negative stiffness, which meets the ideal requirement of "high static and low dynamic" of the vibration isolator. Existing quasi-zero stiffness is mostly achieved by parallel connection of positive and negative stiffne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K7/18F16F7/116
CPCF16F7/116H02K7/1846
Inventor 徐兴刘欢江昕炜王峰施天玲陈雷
Owner JIANGSU UNIV