The invention discloses a safety tong U-shaped opening alarm device. The safety tong U-shaped opening alarm device comprises a pair of elevator U-shaped hole safety tongs (1), a guide rail (2), a rubber supporting base (3) and a detecting device (4), wherein the detecting device (4) is usually arranged on a plate body (5) of the elevator U-shaped hole safety tongs (1); the detecting device (4) is used for detecting the contact friction degree between the guide rail (2) and a U-shaped clearance of the U-shaped hole safety tongs (1) and transmitting the detection amount to an elevator control circuit module; a control circuit can select whether to alarm or not according to the contact friction degree. An elevator safety state can be predicated, advanced alarming is performed, a part with a potential safety hazard is replaced in advance, and the safety factor of an elevator is improved. Due to the beneficial effects, the safety tong U-shaped opening alarm device is widely applied to various elevator systems.
Safety tong U-shaped opening alarm device and realization method thereof
2015-08-12
Patent
Elektronische Ressource
Englisch
IPC: | B66B Aufzüge , ELEVATORS |
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Europäisches Patentamt | 2015
|Europäisches Patentamt | 2021
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