| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an elevating apparatus in which the number of components can be minimized and the number of assembling works can be reduced and occurrence of failures can be controlled as much as possible. <P>SOLUTION: The elevating apparatus is provided with a fixed portion A arranged in a high place and a lifting portion B for fixing a lighting apparatus hung from the fixed portion A with a wire C and the lighting apparatus is lifted by driving of a motor 2, and a plurality of inspection items at the time of lifting of the lifting portion B can be detected by a single limit switch 5 by using detection auxiliary means 7, 8. Concretely, the inspection items includes a lifting limit detection of the lifting portion, an overload detection for a wire and a wire torsion detection, and the detection auxiliary means 7, 8 are composed of a first auxiliary means 7 for assisting the lifting limit detection, a second auxiliary means 8 for assisting the overload detection and a third auxiliary means 7 (9) for assisting the wire torsion detection, and the limit switch 5 is provided with a contactor 5B. <P>COPYRIGHT: (C)2008,JPO&INPIT |
