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A well lid that warns when operated by non-staff members
A well lid that warns when operated by non-staff members
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机译：当由编外人员操作时发出警告的井盖
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摘要
A kind of non-working person disclosed by the invention starts the well lid warned, including well lid, end face is equipped with sleeve on the downside of the well lid, the drive cavity of opening upwards is equipped in the sleeve, the drive cavity end face outside is rotatably connected to symmetrical locking device, and the lifting groove of opening upwards is equipped in the well lid；The present invention is by the direct contact sewer pipe for construction machine formula of warning, judge that the state of well lid changes with this, when not limiting structure of warning, and directly taking, mechanical direct judgement simultaneously starts structure of warning, and well lid electrification is made to prevent further theft from acting, it has staff only to carry out after correctly unlocking work, can just safely remove well lid, and the password unlocked is prompted by the decorative pattern of itself, the password of each well lid is different, and safety coefficient is high.
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