Intelligent library book borrowing and returning system
A library and intelligent technology, applied in the field of library intelligent borrowing and returning system, can solve the problems of high safety risk, books are easy to fall on the ground, etc., to avoid hydraulic oil leakage, prevent books from falling, and facilitate dust removal and cleaning tide effect
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[0031] As an embodiment of the present invention, the lifting device 41 includes a square frame body 411, a frame cover 412, a No. 3 spring 413, a No. 2 rope 414, a fixed pulley 415, a No. 2 bobbin 416 and a No. 2 motor 417; The lowermost square frame body 411 is fixedly connected to the upper side of the base 3, and the uppermost square frame body 411 is provided with a frame cover 412, and the square frame bodies 411 communicate with each other, and each other Slidingly connected to form a pagoda shape; the No. 3 spring 413 is arranged inside the square frame body 411, and the No. 3 spring 413 is used to push the cover to rise, and the No. 2 spring 413 is fixedly connected with the No. One end of the rope 414, the other end of the No. 2 rope 414 goes around the fixed pulley 415 and is wound on the No. 2 bobbin 416; the fixed pulley 415 is arranged on the base 3; the No. 2 bobbin 416 is fixedly connected On the No. 2 motor 417, the No. 2 motor 417 is fixedly connected with th...
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