Full automatic speed limiting brake

Abstract

The invention discloses a full automatic speed limiting brake, and relates to improvement on a brake structure. The invention provides a full automatic speed limiting brake which has good energy-saving effect, is not needed to be regulated manually frequently and prevents a motor from being damaged at an overspeed. The full automatic speed limiting brake comprises a motor, wherein the motor is fixed with an input shaft into a whole through an input flange; and the full automatic speed limiting brake has the structural characteristics that: a first bearing on the input shaft is connected with a main shaft of which one end is provided with an output flange; the main shaft is connected with a shaft sleeve through a spline; a lug boss at the left end of the shaft sleeve is fixed between a connecting flange of the input shaft and an external cam; the external cam is fixed with the connecting flange into a whole; a second bearing is arranged between the left end of the shaft sleeve and the external cam; the side face of the external cam is combined with the side face of an internal cam on the shaft sleeve; the shaft sleeve is connected with a left brake disk through a spline; a protrusion of a right brake disk is embedded into the external cam through the left brake disk; a spring seat is arranged on the right of a spring in a cavity of the right brake disk corresponding to the protrusion; and the lateral part of the spring seat is provided with an adjusting nut arranged on the left brake disk.

Description

Technical field: [0001] The present invention relates to the improvement of the brake structure. Background technique: [0002] Currently common brakes are Figure 12 shown. It is generally used for the lifting mechanism of the crane, the running mechanism and the braking of various elevators. Its working principle is as follows: when the motor needs to release the brake, the electric pusher 113 is energized, and the electric pusher 113 immediately lifts the triangular arm 112, and the triangular arm 112 adjusts the pull rod 109, the spring rod 107, the slide plate 108 and the spring frame 106 Compressing the brake spring 105 simultaneously pushes the left brake arm 104 and the right brake arm 111 apart. The shoe block 103 leaves the brake wheel as the brake arm moves outwards, and the brake is in the state of releasing the brake, so that the motor operates normally. The brake base 101 is connected on the steel structure of the motor base, so that the brake works around t...

AI Technical Summary

Problems solved by technology

[0005] 2. When the hook hangs heavy objects down or the crane runs along the wind, the motor is in an over-speed state, which is easy to burn the motor;

[0006] 3. The electric pusher 113 can only play the role of releasing the brake, and the electric pusher 113 is always charged during work, so electric energy is wasted

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