The working principle, characteristics and uses of coupling

Working principle:

When the coupling coil is not energized, there is no magnetic flux, and the magnetic powder is in a free state. When the active rotor rotates, due to the centrifugal force, the magnetic powder is attached to the outside of the working gap. The active rotor is idling, and the clutch cannot transfer torque. When the coil is powered on, the magnetic powder appears chain connection along the magnetic flux. Relying on the shear resistance of the magnetic powder chain and the friction of the two moving parts, the active rotor drives the driven rotor to rotate together to transfer the torque and movement. At this time, the clutch belongs to the state of closing. After disconnecting the current, the magnetic powder can quickly restore the state of no excitation, release the control of the clutch, and quickly restore the state of off. Through the current control, overload protection, clutch, no-load drive, torque regulation, speed control, tension control, position control and reversing functions are realized.

Features and uses:

1. Wide range of torque control, high control accuracy. Torque and excitation current in a wide range of proportional, can improve, simplify the transfer torque control, can be used as a linear regulating element. 2. It has constant torque, which only depends on the size of the excitation current and has nothing to do with the relative torque of the main and driven sides. It has constant torque, and its static torque is the same as the dynamic torque. 3. In the case of no slip difference can transfer the required torque, no impact, vibration, no noise, smooth operation, can be used for the occasion of high working frequency. 4. Less power consumption, less control power, the remaining torque is very small when the excitation current is disconnected, good disconnect performance, no heating phenomenon when idling, good torque stability, can be used for accurate control. 5. Simple structure, small size, small weight, magnetic powder without oil number dry type, easy maintenance, magnetic powder has oxidation resistance, good heat resistance, long life, high reliability. 6 The driven part is fixed, and the torque is changed to the braking torque of the rotating part, which can be a magnetic powder coupling or a magnetic powder load.