Hollow shafting particle damper

A particle damper and hollow shaft technology, which is applied in the field of damping and vibration reduction, can solve the problems of occupying space, increasing research costs, and the space outside the shaft occupied by the damper, so as to achieve the effect of controlling eccentricity and saving space

Inactive Publication Date: 2010-06-09
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the research, people often pay more attention to torsional vibration, and have studied a variety of torsional vibration dampers, including various pendulum torsional vibration dampers, viscous fluid dampers and magnetorheological fluid dampers, and also have methods to control their lateral vibrations. The damping device, like the shaft damper described in patent CN 1620563A, is rarely involved in the damping device for its longitudinal vibration, and at present, various vibration control devices for the shaft system are studied separately, which increases the research cost and require more space
At the same time, most dampers occupy the space outside the shaft, which has certain requirements for the space arrangement of the shaft system, which causes inconvenience in the design and work of the shaft system

Method used

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Examples

Experimental program
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Embodiment Construction

[0017] Schematic by the structure of the damper figure 1 , 2 And 3, it can be known that the outer wall 2 of the semi-cylindrical, the inner wall 4 of the semi-cylindrical (formed by cutting off a circular platform at both ends of the hollow cylinder), the inner wall plate 3, and the caps 5 evenly distributed along the circumferential direction are all fixed on the side plate 1 by bolts , both ends of the thin-walled steel pipe 6 are inserted into the platform 5 for fixation, and the damping particles 7 are filled in the thin-walled steel pipe 6 with a certain filling rate. Insert the two petals of the damper into the cavity of the shaft system, and apply axial pretightening force to the pusher 8 through the nut 9 and screw 10, so that the pusher 8 exerts a radial force on the inner cylinder 4 to spread it tightly. On the inner wall of the hollow shaft, so as to realize the positioning of the damper in the hollow shaft.

[0018] When the shaft system vibrates, collisions and...

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PUM

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Abstract

The invention relates to a hollow shafting particle damper, which is used for comprehensively controlling shafting vibrations. The hollow shafting particle damper comprises two identical semi-cylindrical damping units and a positioning device, wherein the positioning device is positioned between the two semi-cylindrical damping units and is used for fixing the two semi-cylindrical damping units in a hollow shaft. The damper can effectively control the torsional vibration, transverse vibration and longitudinal vibration of a shafting, and is a comprehensive control device for the vibration of the shafting in three directions. The damper is arranged in the shafting so as to effectively make use of the inner space of the shafting and save cost and space.

Description

technical field [0001] The invention relates to a hollow shaft system damper, which belongs to the technical field of damping and vibration reduction, in particular to a hollow shaft system three-way vibration control damper. Background technique [0002] The shafting of the transmission system of large-scale institutions such as ships and generator sets is prone to vibration during work, and its vibration form is multi-directional, that is, torsional vibration, longitudinal vibration and lateral vibration exist at the same time. In the research, people often pay more attention to torsional vibration, and have studied a variety of torsional vibration dampers, including various pendulum torsional vibration dampers, viscous fluid dampers and magnetorheological fluid dampers, and also have methods to control their lateral vibrations. The damping device, like the shaft damper described in patent CN 1620563A, is rarely involved in the damping device for its longitudinal vibration...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F7/01
Inventor 陈前段勇
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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