Quasi-zero stiffness vibration isolator with energy recovery function

An energy recovery, quasi-zero stiffness technology, applied in the direction of shock absorber, shock absorber, control mechanical energy, etc., can solve the problem of large lateral space occupation of vibration isolator, inability to apply, etc., to improve the vibration isolation effect and reduce the lateral size. Small, the effect of reducing the natural frequency

Active Publication Date: 2020-12-29
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Quasi-zero stiffness vibration isolator with energy recovery function
  • Quasi-zero stiffness vibration isolator with energy recovery function
  • 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 an energy recovery function, and belongs to the technical field of vibration isolation. The quasi-zero stiffness vibration isolator comprises a shell, a gear cam shaft and a rack shaft are connected into the shell, the axes of the gear cam shaft and the rack shaft are perpendicular, and the gear cam shaft is matched with the rack shaft. A slideway symmetrical about the axis of the gear cam shaft is arranged on the outer side of the shell, and a sliding column is embedded into the slideway, makes contact with an auxiliary spring and further makes contact with the cam end of the gear cam shaft; the adjusting mechanism is arranged at one end of the shell and makes contact with the rack shaft through a main spring. A gear pair is connected to the end, away from the cam, of the gear cam shaft and fixedly connected with an electric generator. The elastic direction of the auxiliary spring providing the negative stiffness isparallel to the elastic direction of a positive spring providing the positive stiffness, so that the transverse size of the vibration isolator is greatly reduced, and the vibration isolator can be applied to places with high space requirements; movement can be transmitted to the electric generator through gear transmission to achieve power generation, and energy recovery is achieved.

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 Applications(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
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