A synchronous door knife device with car door lock for elevator

Abstract

The invention discloses a synchronous door knife device with a car door lock of an elevator. The synchronous door knife device comprises a door knife base plate, a first blade, a second blade, a transmission arm, a lock plate, an unlocking transmission arm and an unlocking blade, wherein the door knife base plate is arranged on a door motor of the elevator; the first blade and the second blade are arranged on the door knife base plate in a movable mode and are in linkage with each other; the transmission arm is connected to the door knife base plate in a rotatable mode, is in linkage with a door motor driving mechanism and is used for driving the first blade and the second blade to be opened and closed; the lock plate is connected to the door knife base plate through a shaft and is provided with a lock tongue matched with a lock fitting on the door motor; the unlocking transmission arm is hinged to the second blade and abuts against the lock plate to drive the lock plate to open a lock; the unlocking blade is located between the first blade and the second blade, is hinged to the unlocking transmission arm and is used for being interacted with a landing door ball to drive the unlocking transmission arm. According to the synchronous door knife device with the car door lock of the elevator, the elevator car door lock and the synchronous door knife are arranged on the door motor in an integrated mode, installation and debugging are convenient, meanwhile, no special requirement for a landing door system is needed, and the relevant regulations of the elevator safety in the national standards are met.

Description

technical field [0001] The invention relates to the technical field of elevators, in particular to a synchronous door knife device with car door locks for elevators. Background technique [0002] The widespread use of elevators has brought great convenience to people's lives. At the same time, the safety performance of elevators has also attracted increasing attention. [0003] 11.2.1 of my country's national standard GB 7588-2003 stipulates: "The horizontal distance between the inner surface of the elevator shaft and the edge of the nearest door of the car sill, car door frame or sliding door should not be greater than 0.15m. If the car is equipped with a mechanical lock The door is tight and can only be opened in the unlocking area of ​​the landing door. Except for special circumstances, the operation of the elevator should automatically depend on the locking of the car door, and the locking of the car door must be confirmed by an electrical safety device. The above distanc...

AI Technical Summary

Problems solved by technology

[0005] However, the cost of installing a protective wall on the inner surface of the hoistway is relatively high, and the installation period of the elevator will be prolonged. To install an independent car door lock, it is necessary to set an unlocking blade on each floor, which requires the car door lock to be adjusted when the elevator is installed. And the unlocking blades on each floor are precisely adjusted to ensure that the unlocking blades on each floor can accurately open the car door lock. When the floor is too high, there will inevitably be deviations when the car runs up and down. The installation of the unlocking blade brings greater difficulty, and also greatly increases the failure rate of the car door lock

[0006] In the prior art, most of the door blades and car door locks of the elevator are set up separately. During installation, the coordination of the door blade and the car door lock needs to be debugged, which is not only inefficient, but also increases the failure rate

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