[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.
[0026] Reference Figure 1-4 , A four-line grid blackboard optical projection device with adjustable angles, comprising a hollow base 1, the four corners of the bottom outer wall of the base 1 are all connected with lifting hydraulic cylinders 2 by fastening bolts, and the four lifting hydraulic cylinders 2 are away from the end of the base 1. The supporting legs 3 are all connected by fastening bolts, the bottoms of the four supporting legs 3 are all connected with universal wheels 4 by fastening bolts, the four corners of the outer wall of the top of the base 1 are all provided with installation grooves 20, and the bottom of the four installation grooves 20 The inner walls are all connected with a buffer spring 24 by fastening bolts, the tops of the four buffer springs 24 are all connected with connecting posts 15 by fastening bolts, and the tops of the circumferential inner walls of the four mounting grooves 20 are all connected with fixing sleeves by fastening bolts, and The circumferential inner walls of the four fixing sleeves are all connected by fastening bolts to the connecting column 15. The tops of the four connecting columns 15 are connected by fastening bolts to the same placing table 14, and the middle of the placing table 14 is provided with a first groove , And the bottom inner wall of the first groove is bonded with a non-slip pad 23, and the bottom middle position of the non-slip pad 23 is connected with a pressure sensor 22 through a fastening bolt;
[0027] A shell 13 is placed on the top of the anti-skid pad 23, a second groove is opened in the middle of the outer wall of the bottom of the shell 13, and the bottom inner wall of the second groove is connected with a reflective bowl 34 by fastening bolts, and one side of the inner wall of the bottom of the shell 13 passes The temperature sensor 17 and the first humidity sensor 18 are connected in turn with the fastening bolts, the other side of the inner wall of the bottom of the housing 13 is connected with the wireless transceiver 33 through the fastening bolts, and a first perforation is opened in the middle position of the outer wall of one side of the housing 13, and The circumferential inner wall of the first perforation is connected with the heat dissipation fan 16 by fastening bolts, the middle position of the outer wall of the top of the housing 13 is provided with a third groove, and the inner walls around the third groove are connected with the same glass table 31 by fastening bolts. A through hole is opened in the middle of the inner wall of the bottom of the three grooves, and the bottom of the inner wall around the through hole is connected with the same threaded lens 32 through fastening bolts, and the bottom middle positions of the inner walls at both ends of the housing 13 are connected with mounting posts by fastening bolts 36. The opposite ends of the two mounting posts 36 are connected with a light source 35 through fastening bolts, the middle positions of the tops of the two mounting posts 36 are connected with a fixing rod 37 through fastening bolts, and the two fixing rods 37 are away from one end of the mounting post 36 The same condenser 38 is connected by tightening bolts;
[0028] The top middle position of the outer wall on one side of the housing 13 is connected with a column 12 by fastening bolts. The top of the circumference of the column 12 is sleeved with a connecting sleeve 25. The middle position of the outer wall on one side of the connecting sleeve 25 is threadedly connected with a focusing button 26 and a connecting sleeve 25 An extension rod 27 is inserted into the outer wall of one end of the extension rod 27. The end of the extension rod 27 away from the connecting sleeve 25 is connected to an L-shaped mounting seat 11 through a fastening bolt, and the top middle position on one side of the mounting seat 11 is connected to an adjusting hydraulic cylinder through a fastening bolt 28. The end of the adjusting hydraulic cylinder 28 away from the mounting base 11 is connected with a sliding block 29 through a fastening bolt. A second perforation is provided in the middle of the top side of the mounting base 11, and the inner walls of both ends of the second perforation are connected by fastening bolts. There is the same projection lens 8, the two ends of the top side of the mounting seat 11 are connected with fixed side wings 10 by fastening bolts, and the opposite ends of the two fixed side wings 10 are inserted with rotating shafts, and the middle position of the rotating shaft circumference is sleeved. A mounting plate 30 is connected. One side of the mounting plate 30 is connected with a reflector 9 through fastening bolts, and a sliding groove is provided at the top middle position on the other side of the mounting plate 30, and the outer diameter of the slider 29 matches the inner diameter of the sliding groove The reflecting bowl 34, the light source 35 and the condenser 38 are all located in the same vertical direction;
[0029] The middle position of the inner wall of the top of the base 1 is connected by fastening bolts to equidistantly distributed lighting lamps 21, the top of the inner wall at one end of the base 1 is connected with the second humidity sensor 19 by the fastening bolts, and the top of the outer wall at the other end of the base 1 is connected by the fastening bolts A dehumidification fan 7 is connected. The bottom of the dehumidification fan 7 is connected with a connecting pipe 5 through fastening bolts. The end of the connecting pipe 5 away from the dehumidification fan 7 is connected with a solenoid valve 6 through a flange. The end of the connecting pipe 5 away from the dehumidification fan 7 extends to Inside the base 1, and the solenoid valve 6 is located between the dehumidification fan 7 and the base 1;
[0030] The lifting hydraulic cylinder 2, the solenoid valve 6, the dehumidification fan 7, the heat dissipation fan 16, the lighting lamp 21, the regulating hydraulic cylinder 28, the wireless transceiver 33 and the light source 35 are all connected with a switch through a wire, and the switch is connected with a controller through a wire. The sensor 17, the first humidity sensor 18, the second humidity sensor 19 and the pressure sensor 22 are all connected to the controller through signal wires, and the controller is connected to the base 1 through fastening bolts.
[0031] When the present invention is used, storage is carried out in the base 1, and when the second humidity sensor 19 detects that the humidity in the base 1 is high, the dehumidification fan 7 dehumidifies the interior of the base 1 through the connecting pipe 5, and the illuminating lamp 21 is the base 1 Lighting is provided inside. The height of the base 1 is adjusted by the lifting hydraulic cylinder 2, and the base 1 is moved by the universal wheel 4. The buffer spring 24 plays a good buffering effect during the movement. When the pressure sensor 22 cannot detect the pressure value, the wireless The transceiver 33 sends the loss signal to the computer. The temperature sensor 17 and the first humidity sensor 18 detect the temperature and humidity in the housing 13. When the temperature or humidity in the housing 13 is high, the heat dissipation fan 16 starts to work, by adjusting the hydraulic cylinder 28 The sliding block 29 is driven to slide in the sliding groove, and the inclination angle of the mounting plate 30 is adjusted.
[0032] The above are only preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. Anyone familiar with the technical field within the technical scope disclosed by the present invention, according to the technical solution of the present invention Equivalent replacements or changes to its inventive concept should all fall within the protection scope of the present invention.
