[0018] 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.
[0019] refer to Figure 1-2 , a novel projection display device for computer network engineering, comprising a first vertical board 1 and a second vertical board 2 positioned on one side of the first vertical board 1, the first vertical board 1 and the second vertical board 2 The top of the top is welded with the same top plate 3, and the side of the second vertical plate 2 close to the first vertical plate 1 is welded with two symmetrically arranged fixed plates 4, and the sides of the two fixed plates 4 that are close to each other are provided with The first rotating slot 5, and the same first rotating shaft 6 is installed in rotation in the two first rotating slots 5, and a projector 7 is fixedly installed on the side of the first rotating shaft 6 close to the first vertical plate 1, and the first vertical plate 1 The sides of the straight plate 1 and the second vertical plate 2 that are close to each other are respectively provided with a second rotating groove 8 and a rotating hole 9, and the same second rotating shaft 10 is installed in the second rotating groove 8 and rotating hole 9, and the first A moving plate 11 is arranged between a vertical plate 1 and the second vertical plate 2, and a threaded hole 12 is provided on the moving plate 11, and an external thread is provided on the outside of the second rotating shaft 10, and the external thread on the second rotating shaft 10 It is threadedly connected with the threaded hole 12, and the moving plate 11 is located on one side of the first rotating shaft 6. A rack 13 is installed on the side of the moving plate 11 near the first rotating shaft 6, and a gear 14 is installed on the outside of the first rotating shaft 6. The bar 13 is meshed with the gear 14, and the side of the moving plate 11 away from the first rotating shaft 6 is welded with a connecting plate 15, and the side of the second vertical plate 2 close to the first vertical plate 1 is provided with a sliding groove 16, and connected The side of the plate 15 away from the first rotating shaft 6 extends into the slide groove 16, passing through the first vertical plate 1, the second vertical plate 2, the top plate 3, the fixed plate 4, the first rotating shaft 6, the projector 7, the second The rotating shaft 10, the moving plate 11 and the threaded hole 12 cooperate, and the handle 17 is turned, and the handle 17 drives the second rotating shaft 10 to rotate, and the external thread on the second rotating shaft 10 is threadedly connected with the threaded hole 12 to drive the moving plate 11 to move; The rack 13, the gear 14, the connecting plate 15 and the handle 17 cooperate, the rack 13 on the moving plate 11 meshes with the gear 14 on the first rotating shaft 6, and drives the first rotating shaft 6 to rotate, and the first rotating shaft 6 drives the projection The instrument 7 rotates to facilitate the angle adjustment of the projector 7. The present invention is simple in structure, convenient to install, economical and practical, through the fixed plate 4 and the second rotating shaft 10, it is convenient to move the movable plate 11, and through the rack 13 and the connecting plate 15 , to facilitate the angle adjustment of the projector 7 .
[0020] In the present invention, one end of the second rotating shaft 10 extends to the outside of the rotating hole 9 and is welded with a handle 17, and the handle 17 is provided with anti-slip threads, and the side of the connecting plate 15 away from the first rotating shaft 6 and the sliding groove 16 are far away from the sliding groove The inner wall of one side of the 16 opening is slidingly connected, the outside of the first rotating shaft 6 is equipped with a slide block, the inner wall of the first rotating groove 5 is provided with a ring slide rail, and the slide block is slidingly connected with the ring slide rail, and the gear 14 is located in the projector 7 On one side, the moving plate 11 is located between two fixed plates 4, through the first vertical plate 1, the second vertical plate 2, the top plate 3, the fixed plate 4, the first rotating shaft 6, the projector 7, the second rotating shaft 10. The moving plate 11 is matched with the threaded hole 12, the handle 17 is turned, and the handle 17 drives the second rotating shaft 10 to rotate, and the external thread on the second rotating shaft 10 is threadedly connected with the threaded hole 12 to drive the moving plate 11 to move; The bar 13, the gear 14, the connecting plate 15 and the handle 17 cooperate, the rack 13 on the moving plate 11 meshes with the gear 14 on the first rotating shaft 6, and drives the first rotating shaft 6 to rotate, and the first rotating shaft 6 drives the projector 7 is rotated to facilitate the angle adjustment of the projector 7. The present invention is simple in structure, easy to install, economical and practical, through the fixed plate 4 and the second rotating shaft 10, it is convenient to move the movable plate 11, and through the rack 13 and the connecting plate 15, The angle adjustment of the projector 7 is convenient.
[0021] Working principle: in use, turn the handle 17, and the handle 17 drives the second rotating shaft 10 to rotate, so that the second rotating shaft 10 rotates on the inner wall of the second rotating groove 8 and the rotating hole 9 respectively, and the external thread on the second rotating shaft 10 It is threadedly connected with the threaded hole 12 to drive the moving plate 11 to move. The rack 13 on the moving plate 11 meshes with the gear 14 on the first rotating shaft 6 to drive the first rotating shaft 6 to rotate. The first rotating shaft 6 drives the projector 7 Rotate to facilitate the angle adjustment of the projector 7.
[0022] The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.
