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An arc groove anti-torsional vibration structure with variable stiffness and damping

A circular arc groove and damping technology, applied in the field of mechanical shock absorption

Active Publication Date: 2020-06-30
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems existing in the existing anti-torsional vibration structure, the present invention discloses an arc groove type anti-torsional vibration structure with variable stiffness and damping. The control of stiffness characteristics enables the anti-torsional vibration structure to be adjusted to the most suitable state under various working conditions, ensuring its excellent vibration damping performance

Method used

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  • An arc groove anti-torsional vibration structure with variable stiffness and damping
  • An arc groove anti-torsional vibration structure with variable stiffness and damping
  • An arc groove anti-torsional vibration structure with variable stiffness and damping

Examples

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Effect test

Embodiment 1

[0025] Such as Figure 1-4 The circular arc groove anti-torsional vibration structure with variable stiffness and damping includes a disc and a circular hole in the center of the disc. The disc is integrally formed by two symmetrical semi-discs 1, and each A half disc 1 is provided with a shift fork 2, a V-shaped groove 16 for swinging the shift fork 2 left and right and limiting the shift fork 2, two groups of circular arc grooves symmetrically arranged on both sides of the V-shaped groove 16, One end of the shift fork 2 is hinged to the round hole through a ball pair, specifically, a hemispherical hole 21 is provided on the shift fork 2, and the upper end of the shift fork piston connector 14 is connected to one end of the ball pair , the other end of the ball pair is connected in the hemispherical hole 21, each group of arc grooves is composed of a large arc groove and a small arc groove, and the large arc groove and small arc groove The radians of the grooves are consiste...

Embodiment 2

[0030]An arc groove anti-torsional vibration structure with variable stiffness and damping, including a disc and a circular hole in the center of the disc, the disc is integrally formed by two symmetrical half discs 1, each The semi-disc 1 is provided with a shift fork 2, a V-shaped groove 16 for swinging the shift fork 2 left and right and limiting the shift fork 2, and two sets of circular arc grooves symmetrically arranged on both sides of the V-shaped groove 16, so One end of the shift fork 2 is hinged to the round hole through a ball pair, specifically, a hemispherical hole 21 is provided on the shift fork 2, and the upper end of the shift fork piston connector 14 is connected to one end of the ball pair. The other end of the ball pair is connected in the hemispherical hole 21, and each group of arc grooves is composed of three large, medium and small arc grooves arranged at equal intervals, and the radians of the three large, medium and small arc grooves are similar Cons...

Embodiment 3

[0035] An arc groove anti-torsional vibration structure with variable stiffness and damping, including a disc and a circular hole in the center of the disc, the disc is integrally formed by two symmetrical half discs 1, each The semi-disc 1 is provided with a shift fork 2, a V-shaped groove 16 for swinging the shift fork 2 left and right and limiting the shift fork 2, and two sets of circular arc grooves symmetrically arranged on both sides of the V-shaped groove 16, so One end of the shift fork 2 is hinged to the round hole through a ball pair, specifically, a hemispherical hole 21 is provided on the shift fork 2, and the upper end of the shift fork piston connector 14 is connected to one end of the ball pair. The other end of the ball pair is connected in the hemispherical hole groove 21, and each group of arc grooves is composed of an arc groove, and the arc cone spring in the arc groove is free under the natural elongation state. The end is in contact with the arc-shaped p...

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Abstract

The invention discloses a circular-arc slot type torsional vibration preventing structure with variable stiffness damping. The circular-arc slot type torsional vibration preventing structure with variable stiffness damping comprises a circular disc which is integrally formed by two symmetrical semicircular discs, and a circular hole, wherein a shifting fork, a V-shaped slot, and two groups of circular-arc slots which are symmetrically formed in the two sides of the V-shaped slot, are formed in each semicircular disc; each group of circular-arc slots comprises at least one circular-arc slot, acoil sleeves outside the circular-arc slot, and is internally filled with magnetorheological fluid, and a circular sealing ring, an arc-shaped conical spring, an arc-shaped piston and an O-shaped sealing ring are sequentially arranged on the circular-arc slot from bottom to top, the upper end of the arc-shaped conical spring is equipped with a spring mounting plate, the upper end of the arc-shapedpiston is connected with a shifting fork through a shifting fork piston connector, at least one damping through hole is formed in the arc-shaped piston, and the magnetorheological fluid in the circular-arc slot is divided into upper and lower fluid chambers through the arc-shaped piston. By controlling damping force of the magnetorheological fluid and controlling the variable stiffness characteristic of the arc-shaped conical spring, a torsional vibration preventing structure can be regulated to the most suitable state under various working conditions, and is ensured to have excellent vibration damping performance.

Description

technical field [0001] The invention belongs to the technical field of mechanical shock absorption, and relates to an anti-torsional vibration structure, in particular to an arc groove type anti-torsional vibration structure with variable stiffness and damping. Background technique [0002] The anti-torsional vibration structure is an important type of vibration-damping structure, and its quality has an extremely important impact on the vibration and noise reduction of system components and the smooth operation of products. [0003] The anti-torsional vibration structure is mainly composed of elastic elements and damping elements. By reducing the torsional stiffness of the head end of the drive train, the spring elements can reduce a certain order natural frequency of the torsional system and change the natural mode shape of the system so that it can avoid the vibration caused by the input The excitation caused by the main harmonic excitation of the torque; the damping eleme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F9/53F16H63/30
CPCF16F9/53F16F2222/06F16F2222/12F16F2224/045F16F2228/066F16H63/30
Inventor 宋勇史佳豪刘世闯王瑶杜锐张小伟
Owner TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY