Emergency unlocking device for electronic well lid

Abstract

The invention relates to an emergency unlocking device for an electronic well lid. A limiting screw of the emergency unlocking device is fixed in a sleeve, a handle shaft is arranged in the limiting screw, the limiting screw is in clearance fit with the handle shaft, the shaft end of the lower portion of the handle shaft is fixedly connected with one end of an ejector rod, the other end of the ejector rod penetrates through a spring arranged in an inner hole of the sleeve to be in contact connection with a shifting piece, one end of the spring is connected with the end face of a positioning nut screwed on the ejector rod, the other end of the spring is connected with the conical surface P of the inner hole of the sleeve, the shifting piece is rotationally connected with the bottom end of the sleeve, and the inner hole of the sleeve is of an eccentric structure. The emergency unlocking device is ingenious in structure, a mechanical emergency opening device is adopted, and once an intelligent control module or a motor of the electronic well lid accidentally fails, the emergency unlocking device can be inserted into an emergency opening hole of the well lid outside a well, a well lidlock is opened, the well lid lock cannot be opened by inserting other existing tools, the safety is high, and the purposes of safety and theft prevention are achieved.

Description

technical field [0001] The invention relates to a three-axis manhole cover lock opening device, in particular to an electronic manhole cover emergency unlocking device. Background technique [0002] At present, manhole covers are widely used in the management of electric power, communication, municipal and underground cable facilities. They are the gateway for maintenance and repair of underground pipelines. They are an indispensable part of important infrastructure in cities. Both normal life and social development are important. [0003] The existing patent number is ZL2017 1 00369310, a Chinese invention patent named "Electrically Controlled Manhole Cover Lock Opening Device". This patented product adopts advanced Internet of Things technology, and only authorized personnel can open the manhole cover; it can realize remote monitoring, and can realize local and remote switch locks. [0004] The status information of the electronic manhole cover is collected through the m...

AI Technical Summary

Problems solved by technology

[0007] However, since the clutch part of the electronic manhole cover lock uses an intelligent control module to drive the motor, once the intelligent control module or the motor fails unexpectedly, the manhole cover lock cannot be opened outside the well.

In this case, if the manhole cover lock needs to be opened urgently outside the well, it can only be destroyed violently, which is not conducive to the maintenance of the product and wastes the high-cost electronic manhole cover

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