Display device for agricultural technology popularization

Abstract

The utility model relates to the field of display devices for technology popularization, and discloses a display device for agricultural technology popularization, which comprises a main plate, telescopic assemblies are arranged on the left and right sides of the main plate, fixing assemblies are arranged on the left and right inner sides of the upper part of the main plate, and supporting columns are fixedly connected to the two sides of the bottom of the main plate. Sleeves are slidably connected to the peripheries of the two supporting columns, third fixing rods are rotatably connected to the interiors of the sleeves, ratchet wheels are fixedly connected to the middles of the third fixing rods, third driving gears are fixedly connected to the rear ends of the third fixing rods, cranks are fixedly connected to the front ends of the third fixing rods, and fourth fixing rods are rotatably connected to the interiors of the sleeves; the middle of the fourth fixing rod is fixedly connected with a shifting rod. Two-way opening and closing of the expansion plate are completed through the gears and the gear grooves, and the display area is increased. Lifting of the display board is achieved by rotating the handle, and the use range of the display board is widened.

Description

Technical Field

[0001] The utility model relates to the field of display devices, in particular to a display device for promoting agricultural technology. Background Art

[0002] Technology promotion displays are tools designed to demonstrate the application principles, effects and advantages of specific technologies to target audiences. These displays are designed to convey important information about the technology to audiences through intuitive displays, interactive experiences and information transfer, promote their understanding and acceptance of the technology, and encourage its adoption and application.

[0003] After searching, Chinese patent announcement number: CN212661503U discloses a display device for display, including a display board, wherein the front side surface of the display board is provided with movable grooves near the four corners, an inner rotating shaft is installed inside the movable groove, an outer retaining ring is sleeved on the outer side of the inner rotating shaft, a clamping block is fixedly connected to one side of the outer retaining ring, a torsion spring is installed between the inner rotating shaft and the outer retaining ring, a side clamping plate is symmetrically fixed to the rear side of the display board, an adjustment seat is installed between the two side clamping plates, a vertical groove is provided at the middle position of the inner part of the adjustment seat, a supporting rod is installed inside the vertical groove, an inner slot is provided on one side of the supporting rod, and a limiting slot is provided at the rear end of the adjustment seat; through the designed latch structure, the display content of the display board can be replaced, can be moved and rotated relative to the display position, the display area of ​​the display board is fixed, the height of the base is fixed, it is not easy to adjust, and the scope of application is small, so a display device for agricultural technology promotion is proposed to solve the above problems. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a display device for agricultural technology promotion, aiming to improve the problem of small application range of display boards in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a display device for promoting agricultural technology, comprising a main board, telescopic components are arranged on the left and right sides of the main board, fixed components are arranged on the left and right inner sides of the upper part of the main board, support columns are fixedly connected to both sides of the bottom of the main board, sleeves are slidably connected to the outer peripheries of the two support columns, a fixed rod three is rotatably connected inside the sleeve, a ratchet is fixedly connected to the middle part of the fixed rod three, a driving gear three is fixedly connected to the rear end of the fixed rod three, a crank is fixedly connected to the front end of the fixed rod three, a fixed rod four is rotatably connected inside the sleeve, a shift rod is fixedly connected to the middle part of the fixed rod four, the shift rod is meshed with the ratchet, a limiter three is fixedly connected to the bottom of the support column, a lifting plate is fixedly connected to the bottom of the limiter four, and the lifting plate is meshed with the driving gear three.

[0006] Furthermore, the two telescopic components each include an expansion plate, and the two expansion plates are respectively slidably connected to the left and right sides of the main board, and the two expansion plates are fixedly connected to limiter 2 at the opposite ends, and gear grooves are provided on the tops of the two expansion plates, and pin holes 2 are provided on the rear ends of the tops of the two expansion plates, and pin holes 1 are provided on the front ends of the tops of the two expansion plates, and two transmission components are arranged inside the main board.

[0007] Further, the two transmission assemblies each include a fixed rod 2 and a fixed rod 1, the two fixed rods 2 are rotatably connected to the inside of the main board, the middle parts of the two fixed rods 2 are fixedly connected to a driving gear 1, the rear ends of the two fixed rods 2 are fixedly connected to a driving gear 2, the two driving gears 1 are meshed with the gear grooves, the two fixed rods 1 are rotatably connected to the inside of the main board, the middle parts of the two fixed rods 1 are fixedly connected to a driven gear 1, the rear ends of the two fixed rods 1 are fixedly connected to a driven gear 2, the two driving gears 2 are respectively meshed with gear belts between the two driven gears 2, and the two driven gears 2 are meshed with each other.

[0008] Furthermore, the two fixing components each include a spring, the two springs are respectively fixedly connected to one end of the top of the mainboard, and the two springs are respectively fixedly connected to a latch, and the two latches are respectively slidably connected to one end of the top of the mainboard.

[0009] Furthermore, a handle is fixedly connected to each other on one side of the two expansion boards.

[0010] Furthermore, the bottoms of the two sleeves are fixedly connected to a chassis, the front and rear sides of the two sleeves are fixedly connected to brackets, the tops of the two chassis are fixedly connected to the opposite sides of the multiple brackets at one end, and the bottoms of the two chassis are fixedly connected to two universal wheels.

[0011] Furthermore, a limiter 1 is fixedly connected inside the lower part of the mainboard. Furthermore, a connecting plate is fixedly connected to one side of the middle of the two chassis.

[0012] The utility model has the following beneficial effects:

[0013] 1. In the present invention, the height adjustment and position movement of the display board can be realized through the cooperation of the handle, the driving gear 3, the ratchet, the lever, the lifting plate and the universal wheel, thereby providing more display scenes. The appropriate height is conducive to the audience to obtain information more easily.

[0014] 2. In the present invention, by pulling the handle to drive the expansion board to extend in both directions, the fixing device composed of the spring and the latch can prevent the expansion board from accidentally opening or closing, thereby achieving the adjustment of the display area, so that a larger display area can be used to display detailed content. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional schematic diagram of a display device for agricultural technology promotion proposed by the utility model;

[0016] Figure 2 This is a structural schematic diagram of an expansion board of a display device for agricultural technology promotion proposed by the utility model;

[0017] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0018] Figure 4 This is a schematic diagram of the structure of a transmission component of a display device for agricultural technology promotion proposed by the utility model;

[0019] Figure 5 The utility model provides a structural schematic diagram of a lifting plate of a display device for agricultural technology promotion.

[0020] Legend:

[0021] 1. Main board; 2. Expansion board; 3. Handle; 4. Lever; 5. Bracket; 6. Chassis; 7. Connecting plate; 8. Universal wheel; 9. Crank; 10. Sleeve; 11. Support column; 12. Latch; 13. Stopper 1; 14. Stopper 2; 15. Gear slot; 16. Gear belt; 17. Fixing rod 1; 18. Driven gear 1; 19. Driving gear 1; 20. Fixing rod 2; 21. Spring; 22. Pin hole 1; 23. Driving gear 2; 24. Pin hole 2; 25. Driven gear 2; 26. Stopper 3; 27. Driving gear 3; 28. Ratchet; 29. ​​Lifting plate; 30. Stopper 4; 31. Fixing rod 3; 32. Fixing rod 4. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Reference Figure 1 and Figure 5The utility model provides an embodiment: it includes a main board 1, telescopic components are arranged on the left and right sides of the main board 1, fixed components are arranged on the left and right inner sides of the upper part of the main board 1, support columns 11 are fixedly connected to the two sides of the bottom of the main board 1, and the outer periphery of the support column 11 is slidably connected to the sleeve 10, and the sleeve 10 is rotatably connected to a fixed rod three 31, and the middle part of the fixed rod three 31 is fixedly connected to a ratchet 28, and the rear end of the fixed rod three 31 is fixedly connected to a driving gear three 27, and the front end of the fixed rod three 31 is fixedly connected to a crank 9, and the sleeve 10 is rotatably connected to a fixed rod four 32, and the middle part of the fixed rod four 32 is fixedly connected to a lever 4, and the lever 4 is meshed with the ratchet 28, and the bottom of the support column 11 is fixedly connected to a limiter three 26, and the bottom of the limiter three 26 is fixedly connected to a lifting plate 29, and the bottom of the lifting plate 29 is fixedly connected to a limiter four 30, and the lifting plate 29 is meshed with the driving gear three 27. The bottom of the sleeve 10 is fixedly connected to a chassis 6, the front and rear sides of the sleeve 10 are fixedly connected to brackets 5, one end of the top of the chassis 6 is fixedly connected to the opposite side of the multiple brackets 5, the middle side of the chassis 6 is fixedly connected to a connecting plate 7, and the bottom of the chassis 6 is fixedly connected to two universal wheels 8.

[0024] Specifically, the support column 11 is used to support the main board 1, the limiter three 26 and the limiter four 30 prevent excessive extension and contraction, the fixing rod four 32 is used to fix the lever 4, the fixing rod three 31 is used to fix the driving gear three 27 and the ratchet 28, the driving gear three 27, the ratchet 28 and the lifting plate 29 are used to adjust the height of the support column 11, and the lever 4 and the ratchet 28 are used to prevent the support column 11 from dropping in height.

[0025] Reference Figure 1 , Figure 2 and Figure 4 The two telescopic components include an expansion plate 2, which is slidably connected to the left and right sides of the main board 1, and the opposite end of the expansion plate 2 is fixedly connected to a limiter 2 14, a gear groove 15 is provided on the top of the expansion plate 2, a pin hole 24 is provided on the rear end of the top of the expansion plate 2, and a pin hole 1 22 is provided on the front end of the top of the expansion plate 2. A transmission component is arranged inside the main board 1, and the main board 1 is fixedly connected to the limiter 13. The transmission component includes a fixed rod 20 and a fixed rod 17, and the fixed rod 20 is rotatably connected to the main board 1. The middle part of the fixed rod 20 is fixedly connected to the driving gear 19, and the rear end of the fixed rod 20 is fixedly connected to the driving gear 23, and the driving gear 19 is meshed with the gear groove 15. The fixed rod 17 is rotatably connected to the main board 1, and the middle part of the fixed rod 17 is fixedly connected to the driven gear 18, and the rear end of the fixed rod 17 is fixedly connected to the driven gear 25, and the driving gear 23 and the driven gear 25 are meshed with a gear belt 16, and the driven gear 25 is meshed with each other.

[0026] Specifically, the main board 1 is used to display information, the handle 3 is used to pull out the expansion board 2, the fixing rod 17 is used to fix the driven gear 18 and the driven gear 2 25, the limiter 13 is used to prevent the expansion board 2 from being over-closed, the fixing rod 20 is used to fix the driving gear 19 and the driving gear 2 23, the gear belt 16 is used for the transmission of the driving gear 23 and the driven gear 2 25, the driving gear 19 moves in the gear groove 15 to provide power to the driving gear 19, the driving gear 19 drives the driving gear 2 23, the gear belt 16 drives the driven gear 2 25, the driven gear 2 25 drives the driven gear 18 to rotate, and the driven gear 18 is meshed with the driven gear at the other end to achieve two-way expansion of the expansion board.

[0027] Reference Figure 1 , Figure 3 and Figure 4 The rear end of the top of the expansion board 2 is provided with a second pin hole 24, and the front end of the top of the expansion board 2 is provided with a first pin hole 22. The fixing assembly includes a spring 21, the spring 21 is fixedly connected to the top of the main board 1 at one end, and the spring 21 is fixedly connected to the latch 12, and the latch 12 is slidably connected to the top of the main board 1 at one end.

[0028] Specifically, the spring 21 , the latch 12 , the first pin hole 22 and the second pin hole 24 are used to fix the expansion board 2 , and the spring 21 prevents the latch 12 from rebounding.

[0029] Working principle: Pull up the latch 12 and open the handle 3 to rotate the driving gear 19 and the driving gear 2 23. The driving gear 2 23 drives the driven gear 2 25 to move through the gear belt 16. The driven gear 2 25 drives the driven gear 1 18 to drive the driven gear 2 25 on the other side to rotate, so as to achieve the two-way opening of the display board 2. After opening and closing to the limited position, the latch 12 will rebound and insert back into the pin hole 24 to prevent the expansion board 2 from sliding. Pushing the main board 1 can change the main position of the display board under the action of the universal wheel 8. Turning the crank 9 drives the driving gear 3 27 and the ratchet 28 to rotate. The driving gear 3 27 and the lifting plate 29 cooperate to allow the support column 11 to rise. The limiter 3 26 and the limiter 4 30 prevent the lifting plate 29 from excessive lifting. The lever 4 prevents the ratchet 28 from reversing and causing the lifting plate 29 to drop accidentally.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A display device for agricultural technology promotion, comprising a main board (1), characterized in that: The main board (1) is provided with telescopic components on both sides, the left and right inner sides of the upper part of the main board (1) are provided with fixed components, the bottom of the main board (1) is fixedly connected to support columns (11) on both sides, the outer peripheries of the two support columns (11) are slidably connected to sleeves (10), the sleeves (10) are rotatably connected to a fixed rod (31) inside, the middle part of the fixed rod (31) is fixedly connected to a ratchet (28), the rear end of the fixed rod (31) is fixedly connected to a driving gear (27), and the front of the fixed rod (31) is fixedly connected to a ratchet (28). The end of the support column (11) is fixedly connected with a crank handle (9), the interior of the sleeve (10) is rotatably connected with a fixed rod four (32), the middle of the fixed rod four (32) is fixedly connected with a shifting rod (4), the shifting rod (4) is meshed with the ratchet (28), the bottom of the support column (11) is fixedly connected with a limiter three (26), the bottom of the limiter three (26) is fixedly connected with a lifting plate (29), the bottom of the lifting plate (29) is fixedly connected with a limiter four (30), and the lifting plate (29) is meshed with the driving gear three (27).

2. The display device for agricultural technology promotion according to claim 1, characterized in that: The two telescopic components each comprise an expansion plate (2), the two expansion plates (2) are respectively slidably connected to the left and right sides of the interior of the main board (1), the two expansion plates (2) are fixedly connected to limiter 2 (14) at the opposite ends, the tops of the two expansion plates (2) are each provided with a gear groove (15), the rear ends of the tops of the two expansion plates (2) are each provided with a pin hole 2 (24), the front ends of the tops of the two expansion plates (2) are each provided with a pin hole 1 (22), and two transmission components are arranged inside the main board (1).

3. The display device for agricultural technology promotion according to claim 2, characterized in that: The two transmission assemblies each comprise a fixed rod 2 (20) and a fixed rod 1 (17); the two fixed rods 2 (20) are both rotatably connected to the inside of the main board (1); the middle parts of the two fixed rods 2 (20) are both fixedly connected to a driving gear 1 (19); the rear ends of the two fixed rods 2 (20) are both fixedly connected to a driving gear 2 (23); the two driving gears 1 (19) are both meshed with the gear groove (15); the two fixed rods 1 (17) are both rotatably connected to the inside of the main board (1); the middle parts of the two fixed rods 1 (17) are both fixedly connected to a driven gear 1 (18); the rear ends of the two fixed rods 1 (17) are both fixedly connected to a driven gear 2 (25); the two driving gears 2 (23) are respectively meshed with the two driven gears 2 (25) and connected with a gear belt (16); the two driven gears 2 (25) are meshed with each other.

4. The display device for agricultural technology promotion according to claim 1, characterized in that: The two fixing components each comprise a spring (21), the two springs (21) are respectively fixedly connected to one end of the top of the main board (1) and are separated from each other; the two springs (21) are respectively fixedly connected to a latch (12), and the two latches (12) are respectively slidably connected to one end of the top of the main board (1) and are separated from each other.

5. The display device for agricultural technology promotion according to claim 2, characterized in that: A handle (3) is fixedly connected to each of the two expansion plates (2) on one side away from the other.

6. The display device for agricultural technology promotion according to claim 1, characterized in that: The bottoms of the two sleeves (10) are fixedly connected to a chassis (6), the front and rear sides of the two sleeves (10) are fixedly connected to brackets (5), the tops of the two chassis (6) are fixedly connected to opposite sides of the multiple brackets (5) at one end away from each other, and the bottoms of the two chassis (6) are fixedly connected to two universal wheels (8).

7. The display device for agricultural technology promotion according to claim 1, characterized in that: A limiter (13) is fixedly connected to the interior below the main board (1).

8. The display device for agricultural technology promotion according to claim 6, characterized in that: A connecting plate (7) is fixedly connected to the middle sides of the two chassis (6) facing each other.

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