Linkage mechanism and safety door manual unlocking device

Abstract

The invention provides a linkage mechanism. The linkage mechanism comprises a parallelogram mechanism, a double-rocker mechanism and a cam pull rod assembly. When an edge which is rotatably arranged and forms a parallelogram moves, a connecting rod mechanism of the double-rocker mechanism connected to the edge can be driven to generate displacement so as to further drive the cam pull rod assembly connected to the collecting mechanism to move. The linking mechanism provided by the invention can be applied to a manual unlocking device of a safety door. At the moment, the linkage mechanism further comprises a door lock collision block assembly. A connecting rod II moves to drive the cam pull rod assembly to generate displacement so as to further drive the door lock collision block assembly to generate displacement to be collided with a manual unlocking travel switch, and the manual unlocking travel switch feeds information back to a control unit DCU, so that the safety door is opened. By adopting the parallelogram mechanism and the double-rocker mechanism, manual unlocking is transformed into upward movement of the door lock collision block assembly, so that a key cylinder on the door lock is avoided, and manual unlocking and door opening are realized. By adopting a reset torsional spring, after unlocking is finished and a manual force is removed, the linkage mechanism still can reset.

Description

technical field [0001] The invention relates to an unlocking device, in particular to a manual unlocking device for a safety door. Background technique [0002] The safety door system is a platform equipment with harsher operating conditions and more demanding technical requirements than the subway screen door system. Its main function is to effectively isolate passengers from the train and ensure the safety of passengers. It mainly involves machinery, electricity, software, and signals. and other technologies; the manual unlocking device is an important core device in the safety door system, and it is the most advanced in all control modes; when an emergency occurs during the operation of the equipment (such as fire, power supply failure, control system failure, signal system failure, etc.) , it is necessary to implement the most advanced manual operation mode, that is, open the sliding door channel through the manual unlocking device to evacuate passengers to avoid major a...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a manual unlocking device for safety doors with high unlocking efficiency, convenient and reliable installation of the device and adjustment of manual unlocking force, and no need for maintenance in the later stage, so as to solve the problems existing in the prior art

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