Lift cage door lock device

Abstract

The invention relates to a lift cage door lock device. The lift caged door lock device comprises a portal crane main plate and a gantry crane plate, wherein a main door cutter mechanism is installed on the gantry crane plate, a secondary door cutter mechanism is fixed on the right blade of the main door cutter mechanism, the secondary door cutter mechanism comprises a bottom plate and a connecting rod mechanism installed on the side of the bottom plate, and a latch hook is installed on the other side of the bottom plate, a barrier shaft matched with the latch hook is fixed on the portal crane main plate, the middle part of the latch hook is provided with a fixed shaft vertical to the bottom plate, the rear end of the latch hook is connected with a reset spring, and a pin shaft is fixed on the lower end of the latch hook; the right side of the bottom plate is provided with a gap, and a catch wheel is fixed on the pin shaft after the pin shaft penetrates the gap; the left edge of the right blade of the secondary door cutter mechanism is provided with a flanging extending to the bottom plate, and the flanging is contacted with the left side of the catch wheel. The realization of the lift cage door lock action function is divided into three conditions, when the lift is in a non-level state, the passenger in the lift cage cannot open the door; when the lift is in the level state, the door of the lift cage can be opened from internal or external to rescue the passenger, so that the device plays good protection effect for the passenger.

Description

technical field [0001] The invention relates to the field of elevators, in particular to a car door lock device. Background technique [0002] As a kind of public transportation, the safety performance of elevator has attracted more and more attention. In recent years, as the number of elevators in my country has increased year by year, elevator accidents have also occurred frequently. Among them, the most important accident point is that the opening of the elevator in the non-door area causes passengers to fall into the shaft. GB7588-103: "Safety Code for Elevator Manufacturing and Installation" has only the following regulations on the opening of the elevator car door: when the elevator with a rated speed greater than 1m / s is running, the force to open the car door should be greater than 50N. This 50N force is only used as a door closing force to prevent abnormal opening of the car door due to vibration during the operation of the elevator, and it cannot prevent passenge...

AI Technical Summary

Problems solved by technology

This 50N force is only used as a door closing force to prevent abnormal opening of the car door due to vibration during the operation of the elevator, and it cannot prevent passengers from scratching the door at all.

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