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Antishock performance improving device and method for double-layer vibration isolating system

A technology of anti-shock performance and vibration isolation system, which is applied in the field of anti-shock devices and vibration reduction, and can solve problems such as shock resistance performance that cannot meet actual requirements, complex strong nonlinear problems, and secondary impact of limiters, etc., to achieve rapid capture , Reduce the source vibration degree, improve the effect of vibration isolation ability

Inactive Publication Date: 2007-12-19
HARBIN ENG UNIV
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AI Technical Summary

Problems solved by technology

[0003] At present, in order to improve the radiation of the vibration of marine power equipment to the hull, vibration isolators are usually used between the equipment and the hull foundation. However, due to structural limitations in design, the vibration isolation performance of the double-layer vibration isolation system is ideal. However, the impact resistance often cannot meet the actual requirements.
At present, in order to improve the impact performance of the double-layer vibration isolation system, the method of installing limiters in the double-layer vibration isolation system is often used in actual engineering, but it also introduces new problems at the same time: if the equipment hits the limit when it is impacted The positioner will produce a secondary impact, making the impact process into a complex strong nonlinear problem, increasing the difficulty of research

Method used

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  • Antishock performance improving device and method for double-layer vibration isolating system

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Embodiment Construction

[0031] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0032] In conjunction with Fig. 1, the protected marine power equipment 1, the intermediate mass 2, the elastic shock absorber 3 and the elastic shock absorber 4 as the protected upper layer quality constitute a double-layer vibration isolation system and are placed on the hull foundation 5; A vibration sensor 6, a pick-up sensor 7, a DSP controller 8, a constant current source circuit 9, a DC power supply 10, and an electromagnetic semi-active vibration absorber 11 constitute a semi-active control system. The protected marine power equipment 1 in the double-layer vibration isolation system is equipped with an electromagnetic semi-active vibration absorber 11, and its vibration signal is measured by the vibration pickup sensor 6 as a vibration detection signal, and the shock pickup sensor 7 detects the hull foundation The acceleration signal of 5 is used as the im...

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Abstract

The present invention is antishock performance improving device and method for double-layer vibration isolating system. The antishock performance improving device includes one semi-active vibration absorber and one vibration sensor mounted onto the protected ship power apparatus, one impact sensor mounted on ship base, one DSP controller connected to the vibration sensor and the impact sensor, one constant current source circuit connected between the DSP controller and the semi-active vibration absorber, and one DC power source connected to the constant current source circuit. The present invention has both impact resisting and vibration reducing functions, short reaction time for instantaneous impact control, and effectively raised comprehensive performance.

Description

(1) Technical field [0001] The invention relates to a vibration reduction and anti-shock device, in particular to a vibration reduction and anti-shock device for propulsion power equipment or devices on board a ship. The invention also relates to a vibration reduction and anti-shock method for propulsion power equipment or devices on board a ship. (2) Background technology [0002] The working environment of marine power equipment is that shock and vibration exist at the same time. In recent years, with the development of modern weapon technology, the explosion equivalent and impact duration of underwater explosions have increased significantly, and the hit rate has also increased. The threat to marine equipment is also more serious. Improve the impact resistance of marine power equipment It has become an urgent need to ensure the vitality of modern ships. [0003] At present, in order to improve the radiation of the vibration of marine power equipment to the hull, vibrati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63H21/30F16F13/26
Inventor 李玩幽刘学广陈熙霞靳国永率志君
Owner HARBIN ENG UNIV
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