Projector placing frame for teaching
A technology for placing racks and projectors, applied to projection devices, optics, instruments, etc., can solve the problems of inaccurate angle adjustment, cumbersome operation, and poor practicability, so as to avoid excessive temperature and make the adjustment work accurate and convenient , the effect of convenient operation
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[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.
[0022] refer to Figure 1-3 , a projector placement rack for teaching, comprising a hollow plate 2 and a fixed housing 13, and the hollow plate 2 is movably connected to the fixed shell 13, and the four sides of the top of the hollow plate 2 are vertically welded with a limit plate 1, The bottom of the hollow plate 2 is provided with a fixed shaft 3, and the center position of the fixed shaft 3 is welded with a first gear 4, and the bottom of the first gear 4 is meshed with a second gear 5, and the second gear 5 is connected to the fixed shaft through the rotating shaft 6. The inner surface walls on both sides of the housing 13 are movably connected, the third gear 7...
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