Device for preventing steel wire rope of crown block from being reversely wound

The utility model relates to a device for preventing a steel wire rope of a crown block from being reversely wound and belongs to the technical field of crown block equipment. According to the technical scheme, an early warning optoelectronic switch (62) is arranged at the positions of the first two circles of a safety ring of a steel wire rope (8), a stopping optoelectronic switch (61) is arranged at the position of the safety ring of the steel wire rope (8), the input end of a time delay relay (7) is connected with the stopping optoelectronic switch (61) and the early warning optoelectronic switch (62), and the output end of the time delay relay (7) is connected with a buzzer and a lifting mechanism descending control loop. The device has the advantages that by arranging the stop optoelectronic switch and the early warning optoelectronic switch, continuous buzzing alarm reminding can be achieved when a steel wire rope wound on a crown block winding drum reaches the position of the early warning optoelectron