Monitoring protection device for elevator abnormal operation

Abstract

The invention aims at discloses a monitoring protection device for elevator abnormal operation. The monitoring protection device comprises a landing door guiding rail frame and a car door guiding rail frame, wherein the car door guiding rail frame is provided with a car door guiding rail, a car door hanging plate capable of sliding along the car door guiding rail is installed on the car door guiding rail frame, a trigger switch is fixedly installed on the car door hanging plate, the trigger switch is electrically connected with a braking device through an electric cable, the landing door guiding rail frame is fixedly connected with a switch striking plate through a plurality of striking plate supports, a strip-shaped striking groove is arranged on one side of the switch striking plate toward a car door, and the length direction of the striking groove is identical to the sliding direction of the car door. When a lift car is located at the position of a landing door, the height of a switch lifting lever of the trigger switch is identical to that of the striking groove, when the car door is opened, the switch lifting lever of the trigger switch starts to enter the striking groove, the trigger switch moves in the striking groove of the switch lifting lever in the opening process of the car door, and in the opening process of the car door, the lift car moves abnormally, the switch striking plate triggers the switch lifting lever to trigger the braking device to brake the lift car through the trigger switch.

Description

technical field [0001] The present invention relates to an elevator safety protection device, in particular to a device that can effectively prevent the elevator from sliding upward or downward due to abnormal reasons when the elevator is at the landing position and the car door and the landing door are in an open state. A monitoring and protection device for abnormal operation of elevators that cause shear damage. Background technique [0002] With the development of the economy, elevators have become an indispensable means of transportation in life. As special equipment, elevators have mandatory certification requirements in various countries. Elevators themselves also have various safety protection measures, such as elevator floor doors with door locks, The car door has a door opening and closing limit switch, which can detect the state of the landing door and the car door. The elevator should not run when the door is open. Loss of booting conditions, failure of overload...

AI Technical Summary

Problems solved by technology

[0002] With the development of the economy, elevators have become an indispensable means of transportation in life. As special equipment, elevators have mandatory certification requirements in various countries. Elevators themselves also have various safety protection measures, such as elevator floor doors with door locks, The car door has a door opening and closing limit switch, which can detect the state of the landing door and the car door. The elevator should not run when the door is open. Loss of booting conditions, failure of overload detection device, overload of the car, or failure of the control system of the door closing detection device will still cause abnormal sliding of the elevator in the state of door opening, which is likely to cause injury to passengers. The accident in which the elevator slipped upwards and was trapped to death. In 2011, a female worker on night shift in Dalian, China, was trapped and died in the elevator when she went home. In a hotel in Dongguan, the elevator suddenly slipped down due to overload and out of control. Fortunately, no casualties were caused.

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