The invention discloses a safety device for preventing accidental movement of a lift car in an open door state. The safety device comprises a first bolt locking device, a second bolt locking device and an electronically-controlled gear braking device, wherein the first bolt locking device and the second bolt locking device are fixedly arranged at the upper end of the life car, the electronically-controlled gear braking device is fixedly arranged at the lower end of the lift car, during rising and falling of the lift car, a hall door and a car door are in a closed state, the bolt locking devices are in an open state, the electronically-controlled gear braking device is in a released state, after the lift car is stopped, the hall door and the car door are opened, the bolt locking devices are in a locked state, the electronically-controlled gear braking device is in a locked state, the lift car is in a stopped state, and accidental movement of the lift car is prevented. The safety device is simple in structure, safe, reliable, low in cost and low in maintenance charge, mechanical and electronic control dual protection operation is realized, emergencies can be controlled timely, used lift car safety equipment can be replaced simply, and the replacement cost is low.
Safety device for preventing accidental movement of lift car in door opening state
2015-09-30
Patent
Electronic Resource
English
IPC: | B66B Aufzüge , ELEVATORS |
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