A screen automatic detection device based on LED display screen

Abstract

The application discloses a kind of screen automatic detection device based on LED display screen, it is related to LED display screen detection technical field, including horizontal plate, the horizontal plate top is equipped with several through holes, the horizontal plate bottom is equipped with arc frame, the arc frame top is open setting, the horizontal plate bottom center is fixedly connected with Y type rod, the Y type rod bottom is fixedly connected in the bottom of arc frame inner chamber, several The through holes are located in the top of arc frame, by the mutual cooperation between adjusting plate, threaded cylinder, L-shaped plate, threaded support rod and other structures, LED display screen can be placed on the top of horizontal plate, the angle of rotating adjusting plate is adjusted, adjusting plate is controlled by limiting plate and bolt, two adjusting plates will limit LED display screen, when it is needed to left and right shake device, rotate threaded support rod, remove threaded support rod from threaded cylinder inside, it can be left and right shake device by the arc of arc frame.

Description

Technical Field

[0001] This invention relates to the field of LED display screen testing technology, specifically to an automatic screen testing device based on LED displays. Background Technology

[0002] LED electronic displays integrate microelectronics technology, computer technology, and information processing. They have advantages such as vibrant colors, wide dynamic range, high brightness, long lifespan, and stable and reliable operation. LED displays are widely used in commercial media, cultural performances, sports venues, information dissemination, news releases, securities trading, etc., and can meet the needs of different environments. LED displays need to be tested during the manufacturing process.

[0003] However, existing testing devices have some problems in use. They are not convenient for testing the flatness of LED display surfaces of different sizes, which may affect the subsequent processing of LED displays. In addition, some LED displays require waterproof testing, which is not convenient for existing testing devices to perform, and it is not convenient to recycle water, which reduces the working efficiency of the device. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides the following technical solution: an automatic screen detection device based on an LED display screen, comprising a horizontal plate, a plurality of through holes at the top of the horizontal plate, an arc-shaped frame at the bottom of the horizontal plate, the top of the arc-shaped frame being open, a Y-shaped rod fixedly connected at the center of the bottom of the horizontal plate, the bottom of the Y-shaped rod being fixedly connected to the bottom of the inner cavity of the arc-shaped frame, a plurality of through holes being located at the top of the arc-shaped frame, a plurality of circular grooves at the center of the top of the horizontal plate, each circular groove containing a roller, T-shaped grooves near the front and rear sides of the bottom of the horizontal plate, each T-shaped groove containing a movably connected T-shaped block, each T-shaped block having an L-shaped plate fixedly connected to its bottom, and a movable plate fixedly connected to the side of the L-shaped plate away from the T-shaped block, and a detection mechanism at the top of the horizontal plate.

[0005] Preferably, the detection mechanism includes a connecting cylinder, with L-shaped tubes penetrating and fixedly connected to both the front and rear sides near the top. Connecting holes are provided on both the front and rear sides of the arc-shaped frame near the bottom. Pumps are fixedly connected to both the front and rear sides of the arc-shaped frame near the bottom. Connecting pipes are fixedly connected to the side of each pump near the arc-shaped frame. The end of each connecting pipe away from the pump passes through an adjacent connecting hole and is fixedly connected to it. The end of each connecting pipe away from the pump extends into the inner cavity of the arc-shaped frame. A first telescopic pipe is fixedly connected to the side of each pump away from the arc-shaped frame. A fixed pipe is fixedly connected to the end of each first telescopic pipe away from the pump. A second telescopic tube is fixedly connected to the end of the fixed tube away from the first telescopic tube. A flexible tube is fixedly connected to the top of the second telescopic tube. A horizontal tube is fixedly connected to the end of the flexible tube away from the second telescopic tube. The horizontal tube is sleeved on the outer edge of the adjacent L-shaped tube. A support ring is sleeved on the outer edge of the L-shaped tube. A second magnet is fixedly connected to the side of the support ring away from the connecting cylinder. A support column is fixedly connected to the bottom of the support ring near the left and right sides. A movable plate is fixedly connected to the end of the support column away from the support ring. A first magnet is fixedly connected to the side of the horizontal tube near the connecting cylinder. The first magnet and the second magnet are set to fit together.

[0006] Preferably, each of the two movable plates has a groove at the center of one corresponding side, and a slider is movably connected in each groove. A U-shaped block is fixedly connected to the side of each slider away from the movable plate. A limit hole is opened on the top of each U-shaped block near the right side. A motor is installed on the top of each U-shaped block near the right side. A transmission rod is fixedly connected to the power output shaft of the motor. The bottom end of the transmission rod passes through the limit hole. Two swing plates are provided in the inner cavity of each U-shaped block. A rotating column is fixedly connected to the bottom of each swing plate near the movable plate. The bottom end of the rotating column is inserted into the bottom of the inner cavity of the U-shaped block. Gears are fixedly connected to the outer edge of each rotating column. Two adjacent gears are meshed with each other. The top of the left swing plate near the movable plate is inserted into the top of the inner cavity of the U-shaped block. The bottom end of the transmission rod is fixedly connected to the top of the adjacent right swing plate.

[0007] Preferably, two levels are provided at the center of the top of the horizontal plate, and each level is fixedly connected to a convex plate. The top of the convex plate is provided with movable grooves near the left and right sides. Movable blocks are inserted into the bottom of the swing plate on the side away from the movable plate, and the movable blocks are movably connected in the adjacent movable grooves.

[0008] Preferably, four first threaded holes are provided on both the front and rear sides of the horizontal plate near the left and right sides. U-shaped rods are fixedly connected to both the left and right sides of the horizontal plate. Three movable tubes are sleeved on the outer edge of each U-shaped rod. An adjusting plate is fixedly connected to the top of the three adjacent movable tubes. A connecting rod is inserted into the center of both the front and rear sides of the adjusting plate. A limiting plate is fixedly connected to the end of each connecting rod away from the adjusting plate. A second threaded hole is provided on each limiting plate. A bolt is threaded into each second threaded hole. One end of the bolt is threaded into the adjacent first threaded hole.

[0009] Preferably, threaded cylinders are fixedly connected to the bottom of the horizontal plate near the four corners, and threaded support rods are threadedly connected inside the threaded cylinders.

[0010] Preferably, the outer edge of the second telescopic tube is fitted with a first limiting tube, one side of the first limiting tube is fixedly connected to an adjacent movable plate, the outer edge of the fixed tube is fitted with a second limiting tube, one side of the second limiting tube is fixedly connected to an adjacent movable plate, the bottom of the connecting cylinder is provided with a plurality of leakage holes, and the top of the connecting cylinder is provided with a through groove.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] This invention utilizes the interplay between structures such as an adjusting plate, a threaded cylinder, an L-shaped plate, and a threaded support rod to place an LED display screen on top of a horizontal plate. By rotating the adjusting plate, which is controlled by a limiting plate and bolts, the two adjusting plates limit the movement of the LED display screen. When it is necessary to sway the device left or right, the threaded support rod is rotated to move it out of the threaded cylinder, allowing the device to sway left or right through the curvature of the arc frame.

[0013] By coordinating the components such as the connecting cylinder, pump, arc frame, and level, the system can perform waterproof testing on LED displays. The U-shaped block, swing plate, and level are removed from the top of the horizontal plate. The pump absorbs water from inside the arc frame and delivers it to the connecting cylinder. The water flows out through the drain hole at the bottom of the connecting cylinder. The threaded support rod is then removed, and the device is swung left and right, allowing for a more comprehensive waterproof test of the LED display. When testing the surface flatness of the LED display, the U-shaped block, swing plate, and level are placed back on top of the horizontal plate. A motor and gears drive the swing plate to rotate, which in turn moves the level, thus detecting the flatness of the LED display surface. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present invention;

[0015] Figure 2 This is a bottom-view perspective view of the present invention;

[0016] Figure 3 This is an exploded view of the present invention;

[0017] Figure 4 This is a schematic diagram of the structure of the level instrument component of the present invention;

[0018] Figure 5 This is a schematic diagram of the U-shaped block structure of the component of the present invention;

[0019] Figure 6 This is a schematic diagram of the swing plate structure of the component of the present invention;

[0020] Figure 7 This is a schematic diagram of the gear structure of the component of the present invention;

[0021] Figure 8 This is a schematic diagram of the pump structure of the component of the present invention;

[0022] Figure 9 This is a schematic diagram of the support ring structure of the component of the present invention;

[0023] Figure 10 This is a schematic diagram of the movable plate structure of the component of the present invention;

[0024] Figure 11 This is a schematic diagram of the horizontal plate structure of the component of the present invention;

[0025] Figure 12 This is a bottom view of the horizontal plate structure of the component of the present invention;

[0026] Figure 13 This is a schematic diagram of the connecting cylinder structure of the component of the present invention;

[0027] Figure 14 This is a schematic diagram of the adjustment plate structure of the component of the present invention.

[0028] The following are the labels in the diagram: 1. Horizontal plate; 2. Threaded cylinder; 3. Threaded support rod; 4. Movable plate; 5. Adjusting plate; 6. Connecting rod; 7. Limiting plate; 8. U-shaped block; 9. Connecting cylinder; 10. L-shaped tube; 11. Arc frame; 12. L-shaped plate; 13. Y-shaped rod; 14. Motor; 15. Transmission rod; 16. Swing plate; 17. Gear; 18. Level; 19. Convex plate; 20. Slider; 21. Movable block; 22. Rotating column; 23. Pump; 24. Connecting pipe; 25. First telescopic pipe; 26. Fixed pipe; 27. Second telescopic pipe; 28. Flexible hose; 29. ​​Horizontal tube; 30. First magnet; 31. Support ring; 32. Second magnet; 33. Support column; 34. First limiting pipe; 35. Second limiting pipe; 36. T-shaped block; 37. Roller; 38. U-shaped rod; 39. Bolt; 40. Movable tube. Detailed Implementation

[0029] Please see Figures 1-14The present invention provides a technical solution:

[0030] Example 1:

[0031] An automatic screen detection device based on an LED display screen includes a horizontal plate 1. The top of the horizontal plate 1 has several through holes, and the bottom of the horizontal plate 1 has an arc-shaped frame 11 with an opening at the top. A Y-shaped rod 13 is fixedly connected to the center of the bottom of the horizontal plate 1, and the bottom of the Y-shaped rod 13 is fixedly connected to the bottom of the inner cavity of the arc-shaped frame 11. Several through holes are located at the top of the arc-shaped frame 11. Several circular grooves are opened at the center of the top of the horizontal plate 1, and rollers 37 are inserted into each of the circular grooves. T-shaped grooves are opened near the front and rear sides of the bottom of the horizontal plate 1, and T-shaped blocks 36 are movably connected to each of the T-shaped grooves. An L-shaped plate 12 is fixedly connected to the bottom of each T-shaped block 36, and a movable plate 4 is fixedly connected to the side of the L-shaped plate 12 away from the T-shaped block 36. A detection mechanism is provided at the top of the horizontal plate 1.

[0032] Four first threaded holes are provided on the front and rear sides of the horizontal plate 1 near the left and right sides. U-shaped rods 38 are fixedly connected to the left and right sides of the horizontal plate 1. Three movable tubes 40 are sleeved on the outer edge of the U-shaped rods 38. An adjustment plate 5 is fixedly connected to the top of the three adjacent movable tubes 40. A connecting rod 6 is inserted into the center of the front and rear sides of the adjustment plate 5. A limit plate 7 is fixedly connected to the end of the connecting rod 6 away from the adjustment plate 5. A second threaded hole is provided on the limit plate 7. A bolt 39 is threadedly connected to the second threaded hole. One end of the bolt 39 is threadedly connected to the adjacent first threaded hole. Threaded cylinders 2 are fixedly connected to the bottom of the horizontal plate 1 near the four corners. Threaded support rods 3 are threadedly connected to the threaded cylinders 2.

[0033] Place the LED display screen on top of the horizontal plate 1, rotate the angle of the adjustment plate 5. The adjustment plate 5 is controlled by the limit plate 7 and the bolt 39. The two adjustment plates 5 will limit the LED display screen. When it is necessary to shake the device left and right, rotate the threaded support rod 3 and move the threaded support rod 3 out from the inside of the threaded cylinder 2. Then the device can be shaken left and right by the arc of the arc frame 1.

[0034] Example 2:

[0035] The testing mechanism includes a connecting cylinder 9. L-shaped tubes 10 are inserted through the connecting cylinder 9 on both its front and rear sides near the top and are fixedly connected to it. Connecting holes are opened on both the front and rear sides of the arc-shaped frame 11 near the bottom. Pumps 23 are fixedly connected to both the front and rear sides of the arc-shaped frame 11 near the bottom. Connecting pipes 24 are fixedly connected to the side of the pumps 23 closest to the arc-shaped frame 11. The end of the connecting pipe 24 away from the pumps 23 passes through an adjacent connecting hole and is fixedly connected to it. The end of the connecting pipe 24 away from the pumps 23 extends into the inner cavity of the arc-shaped frame 11. A first telescopic tube 25 is fixedly connected to the side of the pumps 23 away from the arc-shaped frame 11. A fixed tube 26 is fixedly connected to the end of the first telescopic tube 25 away from the pumps 23. The fixed tube 26 is further away from the first telescopic tube 25. One end of each telescopic tube 25 is fixedly connected to a second telescopic tube 27. The top end of each second telescopic tube 27 is fixedly connected to a flexible tube 28. The end of each flexible tube 28 away from the second telescopic tube 27 is fixedly connected to a horizontal tube 29. The horizontal tube 29 is sleeved on the outer edge of the adjacent L-shaped tube 10. The outer edge of each L-shaped tube 10 is sleeved with a support ring 31. The side of the support ring 31 away from the connecting cylinder 9 is fixedly connected to a second magnet 32. The bottom of the support ring 31 is fixedly connected to a support column 33 near the left and right sides. The end of the support column 33 away from the support ring 31 is fixedly connected to the side of the movable plate 4. The side of the horizontal tube 29 near the connecting cylinder 9 is fixedly connected to a first magnet 30. The first magnet 30 and the second magnet 32 ​​are set to fit together.

[0036] Each of the two movable plates 4 has a groove at the center of its corresponding side, and a slider 20 is movably connected in each groove. A U-shaped block 8 is fixedly connected to the side of the slider 20 away from the movable plate 4. A limit hole is provided on the top right side of each U-shaped block 8. A motor 14 is located on the top right side of each U-shaped block 8. A transmission rod 15 is fixedly connected to the power output shaft of the motor 14, and the bottom end of the transmission rod 15 passes through the limit hole. Two swing plates 16 are provided inside each U-shaped block 8. A rotating column 22 is fixedly connected to the bottom of each swing plate 16 near the movable plate 4. The bottom end of the rotating column 22 is inserted into the bottom of the inner cavity of the U-shaped block 8. Gears 17 are fixedly connected to the outer edge of each rotating column 22. Two adjacent gears 17 are meshed together. The left swing plate 16 is inserted into the top side near the movable plate 4. At the top of the inner cavity of the U-shaped block 8, the bottom end of the transmission rod 15 is fixedly connected to the top of the adjacent right swing plate 16. Two levels 18 are opened at the center of the top of the horizontal plate 1. The top of each level 18 is fixedly connected to a convex plate 19. The top of the convex plate 19 is provided with movable grooves near the left and right sides. Movable blocks 21 are inserted into the bottom of the swing plate 16 on the side away from the movable plate 4. The movable blocks 21 are movably connected in the adjacent movable grooves. The outer edge of the second telescopic tube 27 is fitted with a first limiting tube 34. One side of the first limiting tube 34 is fixedly connected to the adjacent movable plate 4. The outer edge of the fixed tube 26 is fitted with a second limiting tube 35. One side of the second limiting tube 35 is fixedly connected to the adjacent movable plate 4. Several leakage holes are opened at the bottom of the connecting cylinder 9. A through groove is opened at the top of the connecting cylinder 9.

[0037] When a waterproof test is required for the LED display screen, the U-shaped block 8, the swing plate 16, and the level 18 are removed from the top of the horizontal plate 1. The pump 23 absorbs the water inside the arc frame 11 and delivers it to the connecting cylinder 9. The water flows out through the drain hole at the bottom of the connecting cylinder 9. The threaded support rod 3 is then removed, and the device is shaken left and right. This allows for a more comprehensive waterproof test of the LED display screen. When a surface flatness test is required for the LED display screen, the U-shaped block 8, the swing plate 16, and the level 18 are placed back on the top of the horizontal plate 1. The motor 14, in conjunction with the gear 17, drives the swing plate 16 to rotate. The swing plate 16 then moves the level 18, thereby detecting the flatness of the LED display screen surface.

[0038] Working principle: When the device starts working, the operator places the LED display screen on top of the horizontal plate 1, and then rotates the adjusting plate 5. The adjusting plate 5 drives the movable tube 40 to rotate on the surface of the U-shaped rod 38. The adjusting plate 5 drives the limiting plate 7 to move through the connecting rod 6, aligning the threaded hole on the limiting plate 7 with the threaded hole on the surface of the horizontal plate 1. Then, the bolt 39 is rotated to the threaded hole on the limiting plate 7 and the threaded hole on the horizontal plate 1, thereby limiting the adjusting plate 5. The two adjusting plates 5 limit the LED display screen.

[0039] When the flatness of the LED display surface needs to be tested, the motor 14 is started. The motor 14 drives the transmission rod 15 to rotate, and the transmission rod 15 drives the adjacent swing plate 16 to rotate. The swing plate 16 drives the gear 17 to rotate through the rotating column 22. The gear 17 drives the adjacent gear 17 to rotate. The gear 17 on the other side drives the adjacent swing plate 16 to rotate through the rotating column 22. The two swing plates 16 drive the movable block 21 to move. The movable block 21 moves inside the convex plate 19 and drives the level 18 to move back and forth, thereby expanding the range of flatness testing of the LED display surface. If the LED display area is large, the movable plate 4 is moved. The movable plate 4 drives the L-shaped plate 12 and the T-shaped block 36 to move. The movable plate 4 will drive the U-shaped block 8 to move through the slider 20. The U-shaped block 8 drives the swing plate 16 to move. The swing plate 16 drives the level 18 to move through the movable block 21 and the convex plate 19, which can further expand the testing range.

[0040] When a waterproof test is required for the LED display screen, first move the U-shaped block 8 upwards. The U-shaped block 8 drives the slider 20 to move, and the slider 20 moves out of the movable plate 4. Move the level 18 out of the top of the horizontal plate 1. Then start the pump 23. The pump 23 absorbs the water inside the arc frame 11 through the connecting pipe 24. The water enters the first telescopic pipe 25, the fixed pipe 26, the second telescopic pipe 27, the hose 28 and the horizontal pipe 29 in sequence, and finally enters the connecting cylinder 9 through the L-shaped pipe 10. When it is necessary to expand the scope of the waterproof test, remove the four threaded support rods 3 from the inside of the threaded cylinder 2 in advance. Rotating the threaded support rods 3 will remove them from the inside of the threaded cylinder 2. Then press down on the left or right side of the horizontal plate 1. The horizontal plate 1 will swing left and right through the arc of the bottom of the arc frame 11. The water inside the connecting cylinder 9 can then flow out through the leakage hole and perform a waterproof test on the LED display screen. Some of the water that flows out will enter the inside of the arc frame 11 through the through hole on the horizontal plate 1, thereby achieving the purpose of recycling.

[0041] When it is necessary to disassemble the connecting cylinder 9, first move the horizontal tube 29 and the first magnet 30 away from the support ring 31 and the second magnet 32, and move the movable plate 4. The movable plate 4 drives the L-shaped plate 12 to move, the L-shaped plate 12 drives the T-shaped block 36 to move, and the movable plate 4 drives the support ring 31 to move through the support column 33. The support ring 31 will move away from the L-shaped tube 10, thereby disassembling the connecting cylinder 9.

Claims

1. An automatic screen detection device based on an LED display screen, comprising a horizontal plate (1), characterized in that: The top of the horizontal plate (1) has several through holes, and the bottom of the horizontal plate (1) has an arc frame (11) with an opening at the top. A Y-shaped rod (13) is fixedly connected to the center of the bottom of the horizontal plate (1), and the bottom of the Y-shaped rod (13) is fixedly connected to the bottom of the inner cavity of the arc frame (11). Several through holes are located at the top of the arc frame (11). Several circular grooves are opened at the center of the top of the horizontal plate (1), and rollers (37) are inserted into each of the circular grooves. T-shaped grooves are opened near the front and rear sides of the bottom of the horizontal plate (1), and T-shaped blocks (36) are movably connected to each of the T-shaped grooves. An L-shaped plate (12) is fixedly connected to the bottom of each T-shaped block (36), and a movable plate (4) is fixedly connected to the side of the L-shaped plate (12) away from the T-shaped block (36). A detection mechanism is provided at the top of the horizontal plate (1).

2. The automatic screen detection device based on an LED display screen according to claim 1, characterized in that: The detection mechanism includes a connecting cylinder (9), with L-shaped tubes (10) passing through the front and rear sides near the top and fixedly connected to them. Connecting holes are provided on the front and rear sides near the bottom of the arc-shaped frame (11). Pumps (23) are fixedly connected to the front and rear sides near the bottom of the arc-shaped frame (11). Connecting pipes (24) are fixedly connected to the side of the pumps (23) near the arc-shaped frame (11). The end of the connecting pipe (24) away from the pumps (23) passes through an adjacent connecting hole and is fixedly connected to it. The end of the connecting pipe (24) away from the pumps (23) extends into the inner cavity of the arc-shaped frame (11). A first telescopic pipe (25) is fixedly connected to the side of the pumps (23) away from the arc-shaped frame (11). A fixed pipe (26) is fixedly connected to the end of the first telescopic pipe (25) away from the pumps (23). The fixed pipe (26) extends away from the first telescopic pipe. One end of each constriction tube (25) is fixedly connected to a second telescopic tube (27), and the top end of each second telescopic tube (27) is fixedly connected to a flexible tube (28). The end of each flexible tube (28) away from the second telescopic tube (27) is fixedly connected to a horizontal tube (29). The horizontal tube (29) is sleeved on the outer edge of an adjacent L-shaped tube (10). The outer edge of each L-shaped tube (10) is sleeved with a support ring (31). The side of each support ring (31) away from the connecting cylinder (9) is fixedly connected to a second magnet (32). The bottom of each support ring (31) is fixedly connected to a support column (33) near the left and right sides. The end of each support column (33) away from the support ring (31) is fixedly connected to the side of a movable plate (4). The side of each horizontal tube (29) near the connecting cylinder (9) is fixedly connected to a first magnet (30). The first magnet (30) and the second magnet (32) are fitted together.

3. The automatic screen detection device based on an LED display screen according to claim 2, characterized in that: Each of the two movable plates (4) has a groove at the center of one corresponding side, and a slider (20) is movably connected in each groove. A U-shaped block (8) is fixedly connected to the side of the slider (20) away from the movable plate (4). A limit hole is opened on the top of the U-shaped block (8) near the right side. A motor (14) is provided on the top of the U-shaped block (8) near the right side. A transmission rod (15) is fixedly connected to the power output shaft of the motor (14). The bottom end of the transmission rod (15) passes through the limit hole. Two swinging parts are provided in the inner cavity of each U-shaped block (8). The bottom of the swing plate (16) near the movable plate (4) is fixedly connected to a rotating column (22). The bottom end of the rotating column (22) is inserted into the bottom of the inner cavity of the U-shaped block (8). The outer edge of the rotating column (22) is fixedly connected to a gear (17). Two adjacent gears (17) are meshed with each other. The top of the left swing plate (16) near the movable plate (4) is inserted into the top of the inner cavity of the U-shaped block (8). The bottom end of the transmission rod (15) is fixedly connected to the top of the adjacent right swing plate (16).

4. The automatic screen detection device based on an LED display screen according to claim 3, characterized in that: Two levels (18) are provided at the top center of the horizontal plate (1). Each level (18) is fixedly connected to a convex plate (19). The top of the convex plate (19) is provided with movable grooves near the left and right sides. Movable blocks (21) are inserted into the bottom of the swing plate (16) on the side away from the movable plate (4). The movable blocks (21) are movably connected in the adjacent movable grooves.

5. The automatic screen detection device based on an LED display screen according to claim 1, characterized in that: The horizontal plate (1) has four first threaded holes on its front and rear sides near the left and right sides. The horizontal plate (1) is fixedly connected to the left and right sides with U-shaped rods (38). The outer edge of the U-shaped rods (38) is fitted with three movable tubes (40). The top of the three adjacent movable tubes (40) is fixedly connected to an adjusting plate (5). The center of the front and rear sides of the adjusting plate (5) is inserted with a connecting rod (6). The end of the connecting rod (6) away from the adjusting plate (5) is fixedly connected to a limiting plate (7). The limiting plate (7) is provided with a second threaded hole. The second threaded hole is threaded with a bolt (39). One end of the bolt (39) is threaded into the adjacent first threaded hole.

6. The automatic screen detection device based on an LED display screen according to claim 1, characterized in that: The bottom of the horizontal plate (1) is fixedly connected to the four corners with threaded cylinders (2), and each threaded cylinder (2) is threadedly connected to a threaded support rod (3).

7. The automatic screen detection device based on an LED display screen according to claim 2, characterized in that: The outer edge of the second telescopic tube (27) is fitted with a first limiting tube (34), and one side of the first limiting tube (34) is fixedly connected to the adjacent movable plate (4). The outer edge of the fixed tube (26) is fitted with a second limiting tube (35), and one side of the second limiting tube (35) is fixedly connected to the adjacent movable plate (4). The bottom of the connecting cylinder (9) is provided with several leakage holes, and the top of the connecting cylinder (9) is provided with a through groove.

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