Safety door locking device and safety door adopting same

Abstract

The invention discloses a safety door locking device and a safety door. The safety door locking device includes a main support, an auxiliary support and a unlocking slideway sliding block mounted on the main support through a slideway, a locking wheel mounted on the main support through a torsional spring and including a guide groove and a plurality of teeth-shaped objects, a lock pin fixed on the auxiliary support and accommodated in the guide groove, a stop pin matched with the teeth-shaped objects to limit the rotation of the locking wheel and fixedly connected with the unlocking slideway sliding block, and a first unlocking mechanism arranged on the main support and fixedly connected with the stop pin through a connecting plate. The safety door locking device and the safety door can be used in low-temperature environment and are free from the influence of the environment change; the machining is rather simple, and the matching precision requirement is low; and the door opening / closing status signal feedback structure is simple, the reliability is high, and the device is convenient to mount and adjust.

Description

technical field [0001] The invention relates to a locking device, in particular to a security door and a locking device applied to urban rail transit and high-speed rail platforms. Background technique [0002] With the progress of human society, urban rail transit and high-speed railway have been more and more used, and the frequency of rail transit has greatly increased. With the increase of passenger flow, the safety problems of rail transit and high-speed railway are becoming more and more prominent. At present, the platforms of urban rail transit and high-speed railway are required to install safety doors. In the prior art, there are many types of safety door locking devices, but the general structure is complex, resulting in reduced reliability. At the same time, high processing precision is required, which increases manufacturing costs and is inconvenient for installation, replacement and maintenance. [0003] Those skilled in the art are committed to developing a lo...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the problems in the prior art that the safety door locking device has complex structure, low reliability, high processing precision requirements, high manufacturing cost, inconvenient installation, replacement and maintenance, and complex door opening and closing state signal feedback structure. Insufficient, provide a safety door locking device and a safety door using it

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