Shielding door locking device

Abstract

The invention discloses a shielding door locking device comprising a lock base, a locking mechanism, an electromagnetic unlocking mechanism, a manual unlocking mechanism and a signal triggering mechanism which are arranged on the lock base, wherein the shielding door locking device supplies enough unlocking force through the electrification of the electromagnetic unlocking mechanism to force a lock hook to automatically unlock, and furthermore, a lock pin fixed on a sliding door obtains degree of freedom on the horizontal direction and the aim of releasing the sliding door according to the requirement of an instruction is achieved; after an electromagnet loses power instructively, the unlocking force of the electromagnet disappears, a stroke lever of the electromagnet resets under the dual actions of a spring and the gravity, and the lock hook returns to a horizontal working position under the action of an offsetting spring, therefore, a limiting pin of the sliding door is limited; in addition, the manual unlocking mechanism can be used for realizing manual unlocking and door opening actions in an emergent operation mode and is simple in structure, easy to realize and safe and reliable.

Description

technical field [0001] The invention relates to a door lock, in particular to a screen door lock device. Background technique [0002] The combined screen door composed of two left and right sliding doors is usually locked and unlocked by a locking mechanism designed separately for each door, and the locking and unlocking signal and manual unlocking signal are separated from the locking mechanism, which is loose and increases maintenance. workload. According to the special safety requirements of the subway, after the sliding door is closed, the locking mechanism can prevent the sliding door from being opened by external force. When the sliding door is closed and in the normal operation mode, the door lock of the sliding door can be unlocked by program control; in the emergency operation mode, The platform staff or passengers can manually open the sliding door, and the screen door lock device that realizes the manual unlocking and opening action has a complicated structure a...

AI Technical Summary

Problems solved by technology

According to the special safety requirements of the subway, after the sliding door is closed, the locking mechanism can prevent the sliding door from being opened by external force. When the sliding door is closed and in the normal operation mode, the door lock of the sliding door can be unlocked by program control; in the emergency operation mode, The platform staff or passengers can manually open the sliding door, and the screen door lock device that realizes the manual unlocking and opening action has a complicated structure and poor reliability. It is easy to get stuck and fail during work, resulting in poor operation.

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