Rapid releasing device and method for crane brake

Abstract

The invention provides a rapid releasing device and method for a crane brake. The rapid releasing device is composed of a U-shaped frame, a connecting plate, bolts and a jackscrew. A brake bar back-up nut of the brake is loosened, the jackscrew is screwed out, and the U-shaped frame is clamped in a brake arm of the brake; after the connecting plate is fixed through the connecting bolts, the jackscrew is rotated to abut against a stand collar above a brake coil; the jackscrew continues to be rotated to enable a brake main spring to be compressed until a brake shoe and a brake wheel are separated to form a seam; anchor bolts of a motor are dismounted, a monorail crane is used for taking down the motor through hoisting; and after the motor is replaced by a new motor, the jackscrew of the releasing device is screwed out anticlockwise, a dial indicator base is attracted to the side face of a brake wheel, and the coaxiality of the motor and a reducer is adjusted through the dial indicator and rotation of a transmission shaft. The motor replacing process can be simplified, overhaul efficiency is improved, motor replacing time is shortened, and the crane operation efficiency is improved.

Description

technical field [0001] The invention belongs to the field of mechanical equipment, and in particular relates to a device and method for quickly opening the brake of a main hoisting motor of a crane. Background technique [0002] The working environment of the main hoisting motors of three 32 / 10t cranes in front of the furnace in the steelmaking plant is harsh, and faults such as grounding and short circuit often occur. This motor is YZR315S-10, 55kw, the shaft of the motor is connected The brake wheel is braked by the brake of ZWZ400DC110V when the motor brakes. When the motor fails, it is required to organize emergency rescue immediately on site, otherwise it will seriously affect the operation of adding cold material to the converter. At present, before replacing the motor on site, the brake held on the brake wheel is first tied to the electromagnet stand collar and the brake arm with 8# wire, and an "8" knot is tied, and then the "8" knot is tightened with a steel pipe...

AI Technical Summary

Problems solved by technology

When the motor fails, it is required to organize emergency rescue immediately on site, otherwise it will seriously affect the operation of adding cooling material to the converter

At present, before replacing the motor on site, the brake held on the brake wheel is tied to the electromagnet stand collar and the brake arm with 8# wire, and an "8" knot is tied, and then the "8" knot is tightened with a steel pipe. In this way, the main spring of the brake is compressed to release the brake. This method is time-consuming and labor-intensive. It usually takes 30 to 40 minutes to complete. This link seriously restricts the speed of motor replacement and the operating rate of the crane.

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