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Damping vibration attenuation gear

A gear and damping technology, which is applied in belts/chains/gears, components with teeth, portable lifting devices, etc., can solve the problems of increased design calculations, restrictions, and increased manufacturing costs, to reduce noise, absorb vibration, The effect of reducing vibration

Inactive Publication Date: 2012-04-11
INST OF PROCESS ENG CHINESE ACAD OF SCI +3
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The control of gear transmission noise is a very complex system engineering. At present, two methods are mainly used to solve this problem, active vibration reduction and passive vibration reduction. Among them, active vibration reduction mainly includes methods such as improving manufacturing accuracy and tooth surface modification. The structural parameters of the optimized gears, such as tooth shape and pressure angle, have been considered in the design to improve the meshing conditions of the gears, but the meshing impact and time-varying stiffness of the gears cannot be avoided, and the active vibration reduction method will greatly increase the manufacturing cost. Design Insufficiency such as increased calculation
[0004] Among the commonly used passive vibration reduction technologies at present, viscoelastic material damping is the most widely used. Since viscoelastic materials are very sensitive to temperature, the use of viscoelastic materials under the high temperature conditions of gearbox operation is greatly restricted. Difficult to realize industrial application in gear transmission system
[0005] Therefore, neither active vibration reduction nor passive vibration reduction can achieve good results at present. How to solve this problem and realize the industrial application of gear transmission system is of great significance

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0029] 6 cavities are processed on the gear hub with a modulus of 5, a number of teeth of 30, a pressure angle of 20°, and a tooth width of 20mm. The range is from 0.5mm to 2mm, and it is filled into the cavity according to the filling rate of 82%. When the transmission power P is 15KW, the speed is 1000r / min, and the rotation direction of the gear pair is parallel to the direction of particle gravity, the vibration-absorbing gear transmission system is dimensionless. The root mean square value of displacement is 1.2~1.5, and the root mean square value of dimensionless velocity is 0.5~0.7.

Embodiment 2

[0031] 6 cavities are processed on the gear hub with a modulus of 5, a number of teeth of 30, a pressure angle of 20°, and a tooth width of 20mm. The particles of the composite material with spherical outer high vibration damping characteristics and high toughness of the core are processed. The particle size ranges from 1mm to 3mm, filled into the cavity according to the filling rate of 88%, when the transmission power P is 15KW, the speed is 1000r / min, and the rotation direction of the gear pair is parallel to the direction of particle gravity, the mean square of the dimensionless displacement of the vibration-absorbing gear transmission system The root value is 11~1.4, and the root mean square value of dimensionless velocity is 0.35~0.6.

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Abstract

The invention relates to a damping vibration attenuation gear. The center of the gear is provided with a shaft hole, the circumference of the upper edge of the hub of the gear is provided with a plurality of symmetrical axial hub cavities (2), and damping particles (4) are filled in the hub cavities (2) in a sealing way. The damping vibration attenuation gear is characterized in that the particle damping technology is applied on the vibration attenuation gear. When the gear carries out transmission, the particles in the hub cavities can more sufficiently exert the collision and friction energy dissipation mechanism of the particles under the effects of centrifugal force and the gravity of the particles, and vibration can be effectively attenuated from the two aspects of controlling the vibrating source and controlling the conduction of vibration.

Description

technical field [0001] The invention relates to the application field of large transmission gears, in particular, the invention relates to a damping and vibration reduction gear. Background technique [0002] Gear transmission is developing in the direction of high speed, heavy load, light duty, high precision and automation, which puts forward higher requirements for its dynamic performance. The vibration and noise of gear transmission are the main sources of vibration and noise of many mechanical equipment. How to control these vibration and noise has an important impact on the precision, performance, life of mechanical equipment and labor protection of operators. [0003] The control of gear transmission noise is a very complex system engineering. At present, two methods are mainly used to solve this problem: active vibration reduction and passive vibration reduction. Among them, active vibration reduction mainly includes methods such as improving manufacturing accuracy a...

Claims

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Application Information

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IPC IPC(8): F16H55/17F16H55/14
Inventor 肖望强段东平边贺川李威邓乐
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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