Magnetic rheological soft startor

A soft start and magnetorheological technology, applied in fluid clutches, clutches, mechanical equipment, etc., can solve the problems of easy mechanical shock, narrow slip range, and greater impact on the life of mechanical devices, etc., to achieve life extension and slip Effect of increased range and lower operating temperature

Inactive Publication Date: 2005-08-03
CHONGQING UNIV
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  • Abstract
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AI Technical Summary

Problems solved by technology

Jaw clutches and friction plate clutches only have two states of on and off, so they are prone to mechanical shocks when starting, which has a great impact on the life of the mechanical device. At the same time, they need to be adjusted and replaced frequently
U.S. Patent US005896965, Magnetorheological fluid fan clutch (magnetorheological sector clutch), announced a magnetorheological single disc clutch, which introduces a new type of intelligent material magnetorheological fluid as a power transmission medium, through the magnetic field generated by the electromagnetic coil to c

Method used

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  • Magnetic rheological soft startor
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  • Magnetic rheological soft startor

Examples

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[0021] See attached figure 1 ~7, The magnetorheological soft starter adopts the structure of the main and the driven part rotor, the torque is input through the driving shaft [1], the driving part [4,17,13], and the magnetic field is generated under the action of the electromagnetic coil to change the magnetorheological change The rheological characteristics of the liquid, through its transmission, the torque is output through the follower [6, 8, 9, 10] and the driven shaft [23].

[0022] The present invention improves the structure of the main and follower parts: the cavity of the driving part [4,17,13] is equipped with a follower part [6,8,9,10] whose shape matches it, and the two keep 0.5-2mm It is equipped with magnetorheological fluid [7] in the gap. Magnetorheological fluid has the advantages of low zero-field viscosity, fast response time, high dynamic yield stress, low excitation voltage, etc., which is very suitable for transmitting torque When the coil [9] is energized,...

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Abstract

A magnetic rheological soft starter is used in mechanical transmission. In order to eliminate impact of clutch during starting, new material magnetic rheological fluid (MRF) is introduced as the power transmission medium, and magnetic field electromagnetic winding produces is used in altering the rheological characteristic and controlling transmitted torque to reach the aim of smooth starting. For small structure, great torque and reduced heat produced during operation, the present invention makes driving part in cavity holding driven part, adopts two electromagnetic windings to control the rheological characteristic of MRF in radial and axial work gap, and mounts heat pipe to the end cap of the driving part to lower its temperature. The present invention is used mainly in soft starting of mechanical unit, power transmission, speed regulation and overload protection.

Description

Technical field: [0001] The invention relates to a mechanical power transmission device, which is mainly used for power transmission and speed regulation between a prime mover and a working machine, or between a driving shaft and a driven shaft in the same machine, and can also be used for mechanism overload protection. Background technique: [0002] Mechanical devices generally use a clutch as a starting device. Jaw clutches and friction plate clutches only have two states of on and off, so they are prone to mechanical shocks when they are started, which has a great impact on the life of the mechanical device. At the same time, they need to be adjusted and replaced frequently during use. U.S. Patent US005896965, Magnetorheological fluid fan clutch (magnetorheological sector clutch), announced a magnetorheological single disc clutch, which introduces a new type of intelligent material magnetorheological fluid as a power transmission medium, through the magnetic field generat...

Claims

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Application Information

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IPC IPC(8): F16D35/00
Inventor 曹兴进郑军
Owner CHONGQING UNIV
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