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Electromagnetic active control device for transverse vibration of shaft system

A lateral vibration, active control technology, applied in propulsion transmission, non-rotation vibration suppression, transportation and packaging, etc., can solve problems such as no attempt to study active control of shafting lateral vibration.

Active Publication Date: 2020-03-17
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned methods to reduce the rotary vibration of the shaft system are to improve the process or passive control, and none of them try to study the active control of the lateral vibration of the shaft system

Method used

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  • Electromagnetic active control device for transverse vibration of shaft system
  • Electromagnetic active control device for transverse vibration of shaft system
  • Electromagnetic active control device for transverse vibration of shaft system

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0026] Such as Figure 1 to Figure 5 As shown, in Embodiment 1 and Embodiment 2, the electromagnetic active control device for lateral vibration of the shaft system includes a vertical unit and a horizontal unit; the vertical unit is vertically arranged, including a mover and fixed on the outer ring of the bearing in the shaft system The base 9, the mover includes a non-magnetic main rod 2 and permanent magnets 15 and magnetizers 16 fixed in the middle of the main rod 2 and arranged alternately. The upper end of the main rod 2 is connected with the balance spring 1, and the upper part is connected with the fixed guide Part 3 is sliding fit (the smoothness and material stiffness should be increased as much as possible when the sliding fit is made), the lower part is covered with a compression spring 12, and the lower end is sliding fit with the base 9 (t...

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Abstract

The invention discloses an electromagnetic active control device for transverse vibration of a shaft system. A vertical unit comprises a rotor and a based fixed on a bearing outer ring in the shaft system. The rotor comprises a main rod, and a permanent magnet and a magnetizer fixed in the middle of the main rod. The upper end of the main rod is connected to a balancing spring, the upper part of the main rod is slidably matched with a guide part, a compressed spring is arranged on the lower part in a sleeving manner, and the lower end of the main rod is slidably matched with the base; the compressed spring is arranged on the base and two ends are not fixed; in an initial state, the rotor is in contact with the upper end of the compressed spring without a force by the balancing spring; tension springs are symmetrically arranged on two sides of the main rod; a connecting rod is arranged on the base; the upper ends of the tension springs are fixed to the rotor and the lower ends of the tension springs are hooked to corresponding connecting rods, and downward spaces are available; a corresponding coil is arranged on an outer ring of the magnetizer, the coil is arranged in a fixed magnetizing barrel, and when the rotor moves downward, the compressed spring is pressed to output a pressure to the base and the tension springs move synchronously without being pressed, and when the rotormoves upward, the compressed spring is free and the tension springs are pulled to output a tensile force to the base. The device can control transverse vibration of the shaft system actively.

Description

technical field [0001] The invention belongs to the field of vibration and noise vibration control, in particular to an electromagnetic active control device for lateral vibration of a shaft system. Background technique [0002] Shafting is the main equipment for power transmission. It effectively connects the main engine and executive parts (such as oars) and forms a complete power system to make the equipment (such as ships) run normally. When the main force transmission of the shaft system is uneven, the torque and installation cannot be centered, and the material processing is inaccurate, etc., the shaft system will be in an unbalanced state and lateral vibration will occur (in addition, the propeller in the uneven flow field work, it will cause disturbance at the tail of the ship, causing resonance and local vibration of the ship). Severe lateral vibration may cause excessive bending stress of the shafting, causing it to break and endangering human life. [0003] At p...

Claims

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Application Information

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IPC IPC(8): F16F15/03F16F15/04B63H23/00
CPCB63H23/00F16F15/03F16F15/04
Inventor 胡甫才许天乐章林柯张冠军张聪王利
Owner WUHAN UNIV OF TECH
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