Center opening door lock for elevator

Abstract

The invention provides a center opening door lock for an elevator, and belongs to the technical field of the elevator. The center opening door lock for the elevator comprises a shifting fork, an outward opening lock shaft, an upper lock piece which is connected to an upper door panel, a lower lock piece which is connected to a lower door panel, a lock hook, a lock plate, a lock wheel, a quiescent point seat, a double contact switch and a Y type contact. The lock plate is connected to a slideway of an elevator door, the lock hook is rotationally connected to the lock plate, and in a locking state, the locking end of the lock hook is clamped in an open hole of the upper lock piece for locking, the double contact switch is arranged between the lock hook and the lower lock piece, the Y type contact is connected to the upper lock piece, the quiescent point seat is installed on the lock hook, the double contact switch and signal lines of the quiescent point seat are connected with an outer control cabinet, and the lock wheel is installed in a lock wheel shaft hole of the lock hook through a lock wheel shaft. The double contact switch and the Y type contact are used for transmitting signals, a door knife is used for striking the lock wheel to drive the lock wheel to move, therefore, unlocking is achieved, and meanwhile a door lock loop is disconnected, and the center opening door lock for the elevator has the advantages of being safe and reliable, simple in structure, convenient to assemble and easy to operate.

Description

technical field [0001] The invention belongs to the technical field of elevators, in particular to a central split door lock for elevators. Background technique [0002] The existing elevator door lock device cannot detect the switch state of the lock hook when the elevator opens and closes the door, and cannot realize electromechanical interlocking, which has potential safety hazards. The matching precision between the lock shaft and the shaft sleeve is not high, and it is easy to rust, which causes the door lock to not work. Complex structure, inconvenient production and maintenance. Contents of the invention [0003] In view of the above-mentioned existing technical problems, the present invention provides a central split door lock for elevators. It can realize the state detection of the lock hook switch and improve the safety performance of the elevator. [0004] The purpose of the present invention is achieved through the following technical solutions: [0005] Th...

AI Technical Summary

Problems solved by technology

[0002] The existing elevator door lock device cannot detect the switch state of the lock hook when the elevator opens and closes the door, and cannot realize electromechanical interlocking, which has potential safety hazards

The matching precision between the lock shaft and the shaft sleeve is not high, and it is easy to rust, resulting in the door lock not working

Complex structure, inconvenient production and maintenance

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