Magnetic Powder Brake

The magnetic powder brake is a new type of transmission component that uses magnetic powder as a medium to form a magnetic powder chain to transmit torque under energization, and is mainly composed of an inner rotor, an outer rotor, an excitation coil and a magnetic powder.
       When the coil is not energized, the active rotor rotates. Due to the centrifugal force, the magnetic powder is clamped on the inner wall of the active rotor, and there is no contact between the magnetic powder and the driven rotor, and the active rotor idles.

       After the DC power supply is turned on, an electromagnetic field is generated, and the magnetic powder of the working medium forms a magnetic powder chain under the action of the magnetic force line, and the inner rotor and the outer rotor are coupled to achieve the purpose of transmitting and braking torque.

       The magnetic powder brake is a combination of a transmission unit (input shaft) and a driven unit (output shaft). The space between the two sets of cells is filled with granular magnetic powder (about 40 microns of rest). When the magnetic coil is not conducting, the torque will not be transmitted from the transmission shaft to the driven shaft. However, if the coil is electromagnetically energized, the magnetic powder will attract hardening due to the action of the magnetic force, and the torque will be transmitted between successive slidings. . The magnetic powder brake is an excellent automatic control element. It uses magnetic powder as the working medium and uses the excitation current as the control means to achieve the purpose of controlling braking or transmitting torque.