Ultralow-frequency hydraulic-pressure vibration isolation device based on shape memory alloy spring

A memory alloy spring and hydraulic technology, which is applied in the direction of spring, spring/shock absorber, shock absorber-spring combination, etc., can solve the problem of high rigidity of elastic elements, difficulty in achieving ultra-low frequency vibration isolation, and difficulty in dealing with ultra-low frequency vibration and noise, etc. problem, to achieve the effect of isolating ultra-low frequency vibration and low frequency vibration

Active Publication Date: 2015-11-18
ZHEJIANG UNIV
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Problems solved by technology

As we all know, compared with high-frequency vibration noise, it is more difficult to deal with low-frequency or even ultra-low-frequency vibration noise, because it requires technically that the vibration isolation device itself must have a low-frequency or ultra-low-frequency natural frequency, and at the same time realize the vibration source. The effective support of th

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  • Ultralow-frequency hydraulic-pressure vibration isolation device based on shape memory alloy spring
  • Ultralow-frequency hydraulic-pressure vibration isolation device based on shape memory alloy spring

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Example Embodiment

[0023] The design idea of ​​the present invention will be explained below through the drawings.

[0024] Such as figure 1 As shown, in this embodiment, the box body 11 has a built-in hollow elastic rubber support body 14, the rubber support body 14 is provided with an oil guide groove 13, and the left and right sides of the box body 11 are provided with a movable plate 5, the movable plate 5 and the inner wall of the box body 11. A spring 6 is provided between the upper cover plate of the box body 11, and the center of the upper cover plate of the box body 11 is opened with a circular hole. The guide sleeve 8 is installed in the round hole and is fixedly connected with the upper cover plate of the box body 11 through bolts. The piston rod 4 passes through the guide sleeve 8 and passes through The seal 7 is sealed. The upper end of the piston rod 4 is connected with the mounting table 2 through threads, and the lower end is connected with the piston 12. A shape memory alloy sprin...

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Abstract

The present invention discloses an ultralow-frequency hydraulic-pressure vibration isolation device based on shape memory alloy springs. The vibration isolation device is mainly composed of a fuel tank, a rubber holder, mobile side plates, a piston, a piston rod, an installation table board, a guide sleeve, common springs, the shape memory alloy springs, a seal ring and the like. According to the ultralow-frequency hydraulic-pressure vibration isolation device provided by the present invention, the shape memory alloy springs serve as elastic elements, and through pre-treatment of a shape memory alloy, the shape memory alloy springs can work within a hyperelastic working range. Within the hyperelastic working range, large deformations of the shape memory alloy springs only cause slight restoring forces, and thus the shape memory alloy springs can obtain an ultralow dynamic stiffness. With arrangement of a differential-type hydraulic device using the shape memory alloy springs as the elastic elements, ultralow-frequency vibrations can be effectively isolated.

Description

technical field [0001] The invention relates to an ultra-low frequency vibration isolation device, more precisely, relates to an ultra-low frequency hydraulic vibration isolation device combining the superelastic effect of a shape memory alloy spring and low frequency hydraulic vibration isolation technology. Background technique [0002] As one of the important components of equipment such as ships, vehicles and construction machinery, the vibration isolation device can effectively isolate the vibration generated by the engine on the mechanical equipment, and reduce the harmful effects of vibration and noise on the engine itself and surrounding instruments. [0003] At present, most vehicles and marine engines use rubber mounts or ordinary hydraulic mounts for vibration isolation. Rubber vibration isolators attenuate vibration through the internal friction between rubber molecules. Because of their simple structure, high reliability and easy maintenance, they are still wide...

Claims

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Application Information

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IPC IPC(8): F16F13/00
CPCF16F13/002
Inventor 王林翔吴庭张诚陈惟峰
Owner ZHEJIANG UNIV
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