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Zhuhai Testing Institute successfully developed elevator door door lock mesh depth detector
[ Instrument network instrument research and development ] Recently, Zhuhai Testing Institute successfully developed contact-based displacement sensor and electromagnetic induction on-off detection switch based on the research project of the former Guangdong Provincial Bureau of Quality and Technical Supervision "Research on the elevator door door engagement depth detecting device". The principle of the elevator floor door lock engagement depth detector.
In the daily maintenance and inspection process of the elevator, the door system is usually the target of hidden dangers. The elevator door lock is an important part of the door system. If the fault occurs, the elevator car may be in the unlocked area, and the landing door is accidentally opened. The accident caused the personnel to fall into the hoistway. Therefore, the depth of the hook hook engagement is an important indicator of the door door lock inspection, which is of great significance for ensuring the safe operation of the elevator. At present, the existing detection methods mainly test the engagement depth of the door lock by the steel ruler, and there are cases where the subjective judgment is random and the test precision is low, and the problem that the door lock circuit is turned on and off is not well judged.
The detector is convenient to use the fashion clip, adopts the single chip as the processing core, can automatically recognize the moment of the electrical contact of the door lock, and automatically displays the meshing depth value through the LED display, which is easy to operate, has high test precision and relatively low cost. Has a good practical value and promotion and application prospects.
(Original title: Zhuhai Testing Institute successfully developed elevator door door lock mesh depth detector)