Belt stretcher driven by AC series excitation motor

A technology of tensioning device and exciting motor, applied in the direction of transmission device, electromechanical device, electric components, etc., can solve the problems affecting the normal use of equipment, the rise of belt temperature, the reduction of belt tension, etc., and achieve significant social and economic benefits, stable and stable. The effect of reducing the stability and reducing the positioning error

Inactive Publication Date: 2008-10-15
孙健
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AI Technical Summary

Problems solved by technology

[0003] At present, garden tools generally use belt transmission to achieve deceleration. The motor speed is high and the load is heavy. The belt is subject to a predetermined tension. After a period of time, so that the belt slides, it is easy to produce slippage, which will cause excessive noise and wear
The temperature rise of the belt may even lead to unstable operation, resulting in failure, which affects the normal use of the entire equipment and causes losses to users.

Method used

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  • Belt stretcher driven by AC series excitation motor
  • Belt stretcher driven by AC series excitation motor

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Embodiment Construction

[0020] Such as figure 1 As shown, the schematic diagram of the AC series motor transmission mechanism, the helical gear 1 is connected to the shaft of the motor 2, and is driven to the transmission wheel 5 through the transmission belt, and the transmission wheel 5 is connected to the transmission shaft 4, so its energy is transmitted through the transmission shaft 4 to External machinery (such as blades for lawn mowers).

[0021] When the motor 2 is energized, the electric energy of the motor is converted into mechanical energy, which is output through the motor shaft. During the operation, because the belt drive is used, it has slipping phenomenon. In order to prevent and eliminate the slipping phenomenon in the transmission process , the present invention designs a belt tensioning device, such as figure 2 As shown, a positioning pin 7 is set on the base 3 of the motor, the driving lever 6 and the torsion spring 8 are fixed on the positioning pin 7, the driving lever 6 can...

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Abstract

The invention provides a belt stretcher driven by an AC series excited machine, which comprises a deflector rod, a torsional spring and a tension pulley; the deflector rod is fixed on the base of a motor by a locating dowel and can rotate round the locating dowel; one end of the torsional spring is fixed on the deflector rod and the other end thereof is fixed on a stop place of the base; the tension pulley matched with belts is arranged at the front end of the deflector rod. The belt stretcher of the invention, under the action of the torsional spring, and realizes that the tension pulley automatically imposes tension on driving belts, thus ensuring stable transmission efficiency, promoting reliability and working efficiency of the belt transmission and prolonging the service life of the belts; furthermore, the braking function of the belt stretcher can avoid the occurrence of accidents. Therefore, the belt stretcher has good economic benefits and social effects and promising application prospect.

Description

technical field [0001] The invention relates to a transmission belt tensioning device, in particular to a belt tensioning device driven by an AC series motor. Background technique [0002] Because of its high speed (generally 10000-30000rpm), small size and low cost, AC series motors are widely used in electric tools and garden tools. The output shaft of this type of tool does not need such a high speed, so a reduction transmission device is also required. [0003] At present, garden tools generally use belt transmission to achieve deceleration. The motor speed is high and the load is heavy. The belt is subject to a predetermined tension. After a period of time, the belt slides, which is prone to slippage, causing excessive noise and wear. The temperature rise of the belt may even lead to unstable operation, resulting in failure, which affects the normal use of the entire device and causes losses to users. [0004] Therefore, designing a belt tensioning device driven by a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K5/26F16H7/08
Inventor 孙健
Owner 孙健
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