| 摘要 |
The present invention relates to a slim drive apparatus for lifting and lowering stage equipment. An objective of the present invention is to provide a slim drive apparatus which improves an arrangement structure of a motor, a reducer, and a drum to reduce the width of the drive apparatus. To achieve the objective, the slim drive apparatus for lifting and lowering stage equipment comprises: a frame; a motor arranged in the frame; a reducer connected to the motor; a drum connected to the reducer in front of the reducer; assorted pulleys which are installed on the frame to rotate about a second rotary shaft in parallel with a first rotary shaft of the drum above a front portion of the drum, and have a plurality of guide grooves formed on outer circumferential surfaces thereof to support wires; escape prevention rollers arranged in the vicinity of the assorted pulleys; and a slack sensor made of an electrically conductive substance to conduct electricity when coming in contact with the wires by one or more among slack, loosening, and a break of the wires guided by the assorted pulleys, and arranged adjacent to the assorted pulleys to come in contact with the wires and generate a signal when an abnormality occurs in the wires. The escape prevention rollers and the slack sensor are assembled on the frame by an identical assemble structure. A plurality of assemble holes are formed on the frame in a circular arrangement structure around the second rotary shaft, in which the escape prevention rollers or the slack sensor are assembled to meet a site condition and adjust positions of the escape prevention rollers or the slack sensor. |
