Prevent mine winder switching -over return circuit short circuit system

The utility model discloses a prevent mine winder switching -over return circuit short circuit system, including lifting machine switching -over return circuit and return circuit short circuit detection alarm circuit, the three phase power supply end is connected respectively at the top of the power supply line contactor's in lifting machine switching -over return circuit three contact, the end of power supply line contactor's three contact is connected respectively on the static contact of the reverse contactor of five contacts high pressure vacuum forward contactor and five contacts high pressure vacuum, the reverse contactor of five contacts high pressure vacuum forward contactor and five contacts high pressure vacuum move eight grades of contactors of contact connection electric motor rotor, the motor is connected to eight grades of contactors of electric motor rotor, the first short circuit detector of return circuit short circuit detection alarm circuit and the output that second short circuit detector