Winding type permanent-magnet slip clutch and application thereof

Abstract

The invention relates to a winding type permanent-magnet slip clutch. The winding type permanent-magnet slip clutch comprises a permanent-magnet rotor and a winding rotor coaxial with the permanent-magnet rotor. An air gap is reserved between the permanent-magnet rotor and the winding rotor. A slip ring and a carbon brush are arranged on a second rotating shaft and form a loop together with a coil winding, wherein switch-on or switch-off of the loop can be controlled by an electric switch. An induced current is generated in the coil winding through the slip between the two rotors, the coil winding with the current can be affected by electromagnetic force in the magnetic field of a permanent magnet, and then transmission of torque can be achieved; the electric switch controls switch-on or switch-off of the loop so as to control engagement or disengagement of the permanent-magnet slip clutch. The function of controlling engagement or disengagement of the clutch is achieved through switch-on or switch-off of the electric switch, and besides, the clutch has the overspeed protection function, the overload protection function, the soft start function and the good speed regulation function and can serve as a brake free of frictional contact.

Description

technical field [0001] The invention is a new structure of a frictionless clutch, which belongs to the category of clutches. During the working process, the clutch has no mechanical action, and the engagement and separation of the clutch are controlled by the on-off of the electric switch, and on this basis, overspeed protection, Overload protection, soft start, speed regulation and other functions, the fixed end can become a frictionless brake. Background technique [0002] A clutch is a device that can realize the engagement or separation function of the main and driven parts when transmitting motion and power on the coaxial line through various manipulation methods. Traditional clutches can be divided into chimeric clutches and friction clutches according to the working principle of the transmission of the engaging elements. According to the process of realizing the separation and closing actions, they can be divided into manipulation type and self-control type. According...

AI Technical Summary

Problems solved by technology

Traditional clutches can be divided into chimeric clutches and friction clutches according to the working principle of the transmission of the engaging elements. According to the process of realizing the separation and closing actions, they can be divided into manipulation type and self-control type. According to the clutch operation mode, they can be divided into mechanical type, Pneumatic, hydraulic, electromagnetic, etc., all of the above traditional clutches have the disadvantages of friction, wear, or adding various cumbersome actuators to realize the clutching and closing functions.

An electromagnetic slip clutch solves the above problems well. The engagement and separation of the clutch are controlled by the on-off of the electric switch as in the present invention, but the electromagnetic slip clutch requires an additional rectifying circuit or a DC power supply. , when working, it needs to pass a DC current for a long time, and the efficiency is low

In addition, the research on the permanent magnet clutch has also achieved many achievements at present, for example: the patent number is CN101030726A, which also solves the problems of friction and wear well, but its executive mechanism is still too cumbersome, and it cannot be separated and closed freely.

Patent No. CN101707461A is a frictionless eddy current brake, which is somewhat similar to the clutch of the present invention when it realizes the braking function. Its eddy current rotor is a copper ring plus end ring structure, which can achieve no wear during braking, but the disadvantages are: When there is relative motion between the eddy current rotor and the permanent magnet stator, its electromagnetic braking torque will always exist and cannot be disconnected. When the mechanism does not need to brake, it cannot control and eliminate the braking torque, that is to say, it does not have the separation function of the clutch.

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