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Help CenterHengyang Heavy Industry MWZ250-315 Electromagnetic Drum Brake DC With Lifting Hook
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classification
The brake that uses electromagnetic effect to realize braking can be divided into electromagnetic powder brake, electromagnetic eddy current brake, electromagnetic friction brake and other forms.
① Electromagnetic powder brake: When the excitation coil is energized, a magnetic field is formed, and the magnetic powder is magnetized under the action of the magnetic field, forming a magnetic powder chain, which aggregates between the fixed magnetic conductor and the rotor. Braking is achieved by the binding force and friction force of the magnetic powder. When the excitation current disappears, the magnetic powder is in a free and loose state, and the braking effect is relieved. This type of brake has small volume, light weight, low excitation power, and the braking torque is independent of the rotational speed of the rotating parts. However, magnetic particles can cause component wear. It is convenient for automatic control and suitable for driving systems of various machines.
② Electromagnetic eddy current brake: magnetic field is formed when exciting coil is energized. The armature on the brake shaft rotates and cuts the magnetic field lines, generating eddy currents. The interaction between eddy currents and magnetic fields in the armature forms a braking torque. The electromagnetic eddy current brake is durable, easy to maintain, and has a wide speed range; But at low speeds, the efficiency is low and the temperature rises, so heat dissipation measures must be taken. This type of brake is commonly used in machinery with vertical loads.
③ Electromagnetic friction brake: The excitation coil is energized to generate a magnetic field, and the armature is attracted by the magnetic yoke. The armature is braked through the connecting piece.
In addition, it is further divided into dry single disc electromagnetic brakes, dry multi disc electromagnetic brakes, wet multi disc electromagnetic brakes, and so on.
There are also braking methods that can be divided into power on braking and power off braking.
Electromagnetic brake is a connector that transmits the active side torque to the passive side, allowing for free combination, cutting, or braking as needed. It is called an electromagnetic clutch or brake due to the use of electromagnetic force for actuation, and has the advantages of fast response speed and simple structure.
Function of electromagnetic brake: Electromagnetic brake is a device that stops the machine in a short period of time and stops it from moving; Brakes can also be used to reduce or adjust the machine's operating speed in the short term
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