Brake and motor

Abstract

The invention provides a brake and a motor. The brake comprises a stator iron core (1), an armature (2), a friction plate (3) and a limiting plate (4) which are sequentially arranged in the axial direction, the limiting plate (4) and the stator iron core (1) are fixedly connected, a guide column (5) is arranged between the limiting plate (4) and the stator iron core (1), the armature (2) can be limited by the guide column (5) and slides along the guide column (5), the armature (2) is of a block-type structure, and relative displacement in the axial direction can be generated between the adjacent blocks. According to the brake, the friction contact area can be increased, and the static torque of the brake is prevented from being reduced.

Description

technical field [0001] The present application relates to the technical field of motor equipment, in particular to a brake and a motor. Background technique [0002] Electromagnetic brake is an important basic component, which integrates machinery and electricity, and is mainly used for precise control and braking of rotating mechanisms (such as motor devices, etc.). [0003] When the brake is powered off, the armature is axially acted by the spring force, together with the fixed limit plate to clamp the friction plate, so that it is axially stressed. At this time, there is a small gap between the armature and the stator. When the shaft connected to the hub has the intention of rotation At this time, there is a friction force between the friction plate, the armature and the limit plate that hinders the rotation, which is the braking force (static torque) of the brake. This friction force can also be used for emergency deceleration braking during rotation; The coil in the gr...

AI Technical Summary

Problems solved by technology

In the normal operation of the brake, affected by the accuracy of each part itself, as well as the movement impact of the armature when the power is turned on and off, and the friction plate being clamped and the armature and the limit plate during emergency braking will cause severe friction of each part. Wear, deformation, and then deterioration of plane accuracy, the actual clearance of the brake is often uneven

[0005] The traditional technical solution is that the armature is integral. When the flatness and parallelism of the armature, the friction plate and the limit plate are poor and the wear is uneven, the contact area between the armature and the friction plate will be affected, resulting in a decrease in the static torque of the brake.

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