Anti-slip device for hoisting trolley

Abstract

The embodiment of the invention discloses a backward skating prevention device for a winch skip. The backward skating prevention device comprises a speed measurement motor, a main motor steering judgment device, an isolating switch and a programmable controller, wherein the speed measurement motor is connected to the tail part of a main motor of the winch skip, rotates synchronously with the main motor and is used for outputting a voltage signal; the input end of the main motor steering judgment device is connected with the output end of the speed measurement motor and used for judging steering of the main motor according to the voltage signal output by the speed measurement motor; the isolating switch is connected in series with a winch skip control loop; the input end of the programmable controller is connected with the main motor steering judgment device, the output end of the programmable controller is connected with a controller of the winch skip and the isolating switch respectively, and the programmable controller is used for sending a start signal indicating that the main motor rotates in a first direction to the winch skip and receiving the steering signal sent by the main motor steering judgment device, and when the steering signal sent by the main motor steering judgment device indicates that the main motor rotates in a direction opposite to the first direction, the isolating switch is turned off. The backward skating prevention device can accurately detect the backward skating fault of the winch skip and can stop the winch skip in case of backward skating to prevent severe equipment accidents.

Description

technical field [0001] The invention relates to the electrical technical field of metallurgical blast furnaces, in particular to an anti-slip device for a hoisting trolley. Background technique [0002] Blast furnace ironmaking is an important link in the steel production process. It has many advantages such as simple process, high labor productivity, low energy consumption, and large output. During blast furnace ironmaking, iron ore, auxiliary fuel (such as coal powder, hot air, etc.) and flux for slagging are loaded on the top of the furnace, and preheated air is blown in from the tuyeres located at the lower part of the furnace along the furnace circumference. At high temperature, the carbon in the auxiliary fuel is burned with the oxygen blown into the air to generate carbon monoxide and hydrogen, and the oxygen in the iron ore is removed during the ascension process in the furnace, thereby reducing to obtain iron. [0003] The loading in the existing blast furnace iron...

AI Technical Summary

Problems solved by technology

Due to the existence of situations such as the material loaded by the charging car 105 in the hoisting car often exceeding the rated loading capacity of the car, or the current adjustment of the torque relay connected to the DC motor 101 is not suitable, it often causes the charging car 105 to be in the immediate position. When starting, there is a slide, which causes the empty feed car on the furnace top to go up in the reverse direction, so that it exceeds the inclined mechanical track, and then damages the inclined mechanical track and the feed car, resulting in the shutdown of the blast furnace for maintenance.

Even after taking measures such as regularly correcting the current of the torque relay and strictly prohibiting overloading of the charging cart, the phenomenon of slipping of the charging cart cannot be completely avoided, which has caused a great impact on the production of the blast furnace

Images