Display device for literature and art teaching
A display device and literary technology, applied in the field of teaching equipment, can solve problems such as difficulties and folding of paintings, and achieve the effects of convenient winding, saving time and improving teaching efficiency
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[0027]As an embodiment of the present invention, the supporting column 3 is a telescopic rod, and a positioning plate 31 is fixedly connected to the movable section of the telescopic rod, and one end of a No. articulated rod 32 is hinged on the positioning plate 31; The other end of the No. 1 articulated rod 32 is hinged on the axle sleeve 33; one end of the No. 2 articulated rod 34 is hinged on the described axle sleeve 33, and the other end of the No. 2 articulated rod 34 is hinged on the lower side of the mounting base 1. A threaded rod 35 runs through the thread on the shaft sleeve 33, and the end of the threaded rod 35 is fixedly connected with a handle. The threaded rod 35 runs through the telescopic end of the telescopic plate through the bearing rotation, and the telescopic plate is fixedly connected to the lower side of the mounting base 1; Rotate the handle to drive the bushing 33 to move left and right through the threaded rod 35, and through the cooperation between ...
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