Combined teaching demonstration frame and demonstration method thereof
By using a motor-driven threaded rod and sliding rod structure in the modular teaching demonstration rack, the problem of limited adjustment in existing demonstration racks is solved, enabling multi-directional adjustment and stable display, thus improving teaching effectiveness and safety.
Patent Information
- Application Number
- CN202511189843.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-25
- Publication Date
- 2025-11-25
AI Technical Summary
The existing demonstration racks have fixed height and angle, which cannot be adjusted in multiple directions according to teaching needs. They also have blind spots and are prone to swaying when moved or adjusted, posing a safety hazard, especially when carrying heavy teaching aids.
The device employs a modular structure, using a motor-driven threaded rod and sliding rod to achieve multi-directional adjustment of the moving base, fixed frame, mounting plate, clamping plate, and base. Combined with suction cups and springs, it ensures the stability and cushioning of the demonstration board.
The demonstration stand is adjustable in multiple directions, reducing blind spots, improving teaching effectiveness, enhancing equipment stability and safety, and is suitable for demonstration boards of different sizes.
Smart Images

Figure CN121003353A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of teaching demonstration technology, specifically to a modular teaching demonstration stand and its demonstration method. Background Technology
[0002] A teaching demonstration stand is an auxiliary teaching tool mainly used to display and demonstrate various teaching materials. It typically consists of an adjustable-height shelf that can hang or place various teaching aids, such as charts, models, and physical objects. The teaching demonstration stand is designed to help teachers present teaching content to students more intuitively and vividly, thereby improving students' learning interest and comprehension. By using the teaching demonstration stand, teachers can organize classroom teaching more effectively, enhance teacher-student interaction, and improve teaching outcomes.
[0003] Most existing demonstration stands have fixed height and angle, and cannot be adjusted in multiple directions according to teaching needs. This results in blind spots for teachers when demonstrating from different positions, affecting the teaching effect. At the same time, the demonstration stands are prone to swaying when moved or adjusted, especially when carrying heavy teaching aids, which may cause them to tip over and pose a safety hazard. Summary of the Invention
[0004] The purpose of this invention is to provide a modular teaching demonstration rack and its demonstration method to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a combined teaching demonstration frame, comprising a base and a support frame, wherein a first groove is symmetrically arranged on one side of the top of the base, a first motor is fixedly connected to one side of the base, a first threaded rod is fixedly connected to the output end of the first motor, a movable seat is threadedly connected to the outer side of the first threaded rod, a second motor is fixedly connected to one side of the movable seat, a fixed frame is fixedly connected to the output end of the second motor, a second groove is symmetrically arranged on one side of the fixed frame, a third motor is fixedly connected to the top of the fixed frame, a second threaded rod is fixedly connected to the output end of the third motor, and a mounting plate is threadedly connected to the outer side of the second threaded rod.
[0006] Preferably, a third groove is symmetrically provided on one side of the mounting plate, a fourth motor is fixedly connected to one side of the mounting plate, a first bidirectional threaded rod is fixedly connected to the output end of the fourth motor, a clamping plate is symmetrically threaded to the outer side of the first bidirectional threaded rod, a suction cup is fixedly connected to one side of the clamping plate, a clamping frame is symmetrically fixedly connected to one side of the bottom of the clamping plate, a fixing rod is fixedly connected between the two sides inside the clamping frame, a placement plate is slidably connected to the outer side of the fixing rod, and a spring is fixedly connected to one side of the placement plate.
[0007] Preferably, four support frames are provided, and they are symmetrically located on both sides of the base. A fifth motor is fixedly connected to one side of the top of one support frame. A third threaded rod is fixedly connected to the output end of the fifth motor. A first moving block is threadedly connected to the outer side of the third threaded rod. One side of the first moving block is fixedly connected to one side of the base. A telescopic rod is fixedly connected to one side of the bottom of the support frame. A fixing plate is fixedly connected to the telescopic end of the telescopic rod.
[0008] Preferably, the base has symmetrical fourth grooves on both sides inside, a sixth motor is fixedly connected to one side of the base, a second bidirectional threaded rod is fixedly connected to the output end of the sixth motor, a movable plate is symmetrically threaded to the outer side of the second bidirectional threaded rod, and universal wheels are symmetrically fixedly connected to one side of each of the two movable plates.
[0009] Preferably, a first sliding rod is fixedly connected between the two sides inside the first groove, and the other end of the movable seat is slidably connected to the outside of the first sliding rod. A second sliding rod is fixedly connected between the two sides inside the second groove, and the other end of the mounting plate is slidably connected to the outside of the second sliding rod. The first threaded rod is rotatably connected between the two sides inside the first groove, and the second threaded rod is rotatably connected between the two sides inside the second groove.
[0010] Preferably, a third sliding rod is fixedly connected between the two sides inside the third groove, the other end of the clamping plate is slidably connected to the outside of the third sliding rod, the first bidirectional threaded rod is rotatably connected between the two sides inside the third groove, and the fixed frame is rotatably connected between the two sides inside the movable seat.
[0011] Preferably, a fourth sliding rod is fixedly connected between the two sides inside each of the three support frames, and a second moving block is slidably connected to the outside of the fourth sliding rod. One side of the second moving block is fixedly connected to one side of the base, and the third threaded rod is rotatably connected between the two sides inside one of the support frames.
[0012] Preferably, a fifth sliding rod is fixedly connected between the two sides inside one of the fourth grooves, the other end of the movable plate is slidably connected to the outside of the fifth sliding rod, and the second bidirectional threaded rod is rotatably connected between the two sides inside one of the fourth grooves.
[0013] Preferably, the other end of the spring is fixedly connected to one side inside the clamping frame, and the fixing rod is located inside the spring.
[0014] A demonstration method for a modular teaching demonstration stand includes the following steps:
[0015] Step 1: Start the first motor, which will drive the first threaded rod to rotate, thereby moving the movable seat. Start the second motor, which will drive the fixed frame to rotate. Moving the movable seat will adjust the horizontal position of the fixed frame, which can be adjusted at any time during use. The angle of the fixed frame can also be adjusted to be at the same level as the base. When not in use, it can be stored away to reduce space usage. Start the third motor, which will drive the second threaded rod to rotate, thereby moving the mounting plate, and the height of the mounting plate can be adjusted at any time.
[0016] Step 2: Start the fourth motor, which can drive the first bidirectional threaded rod to rotate, which can drive the two clamping plates to move relative to each other. The demonstration board to be displayed can be placed on the placement plate, and the two clamping plates can be moved to clamp and fix it. Longer demonstration boards can be placed on the placement plate, and the suction cups on the clamping plates can be used to attach and fix them. This is suitable for demonstration boards of different sizes. At the same time, the spring setting can provide some cushioning and shock absorption.
[0017] Step 3: Start the fifth motor, which can drive the third threaded rod to rotate, which can drive the first moving block to move, thereby moving the base and adjusting the height of the base. When adjusting the height of the base, the telescopic rod drives the fixed plate to move until it contacts the ground and forms support. Then adjust the height of the base.
[0018] Step 4: Start the sixth motor, which will drive the second bidirectional threaded rod to rotate, which will move the two moving plates and extend them outward to form a larger base, increasing the support area and making the placement more stable.
[0019] This invention has at least the following beneficial effects:
[0020] 1. In use, this invention can be achieved by starting the first motor, which drives the first threaded rod to rotate, thereby moving the movable seat. Starting the second motor can drive the fixed frame to rotate, and the movement of the movable seat can adjust the horizontal position of the fixed frame, which can be adjusted at any time during use. The angle of the fixed frame can also be adjusted to be at the same horizontal position as the base, so that it can be stored away when not in use to reduce space usage. Starting the third motor can drive the second threaded rod to rotate, which can move the mounting plate, and the height of the mounting plate can be adjusted at any time.
[0021] 2. When using this invention, starting the fourth motor can drive the first bidirectional threaded rod to rotate, which can drive the two clamping plates to move relative to each other. The demonstration board to be displayed can be placed on the placement board, and the two clamping plates can be moved to clamp and fix it. Longer demonstration boards can be placed on the placement board, and the suction cups on the clamping plates can be used to adhere and fix them. It is suitable for demonstration boards of different sizes. At the same time, the spring setting can provide a certain degree of buffering and shock absorption.
[0022] 3. When using this invention, starting the fifth motor can drive the third threaded rod to rotate, which in turn drives the first moving block to move, thereby moving the base and adjusting the height of the base. When adjusting the height of the base, the telescopic rod drives the fixed plate to move until it contacts the ground to form a support, and then the height of the base is adjusted.
[0023] 4. When using this invention, starting the sixth motor can drive the second bidirectional threaded rod to rotate, which can move the two moving plates and extend them outward to form a larger base, increasing the support area and making the placement more stable. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the main structure of the present invention;
[0025] Figure 2 This is a side view of the structure of the present invention;
[0026] Figure 3 This is a schematic diagram of the base structure of the present invention;
[0027] Figure 4 This is a schematic diagram of the fixed frame structure of the present invention;
[0028] Figure 5 This is a schematic diagram of the support frame structure of the present invention;
[0029] Figure 6 This is a schematic cross-sectional view of the base structure of the present invention;
[0030] Figure 7 For the present invention Figure 4 Enlarged structural diagram at point A in the middle.
[0031] In the diagram: 1. Base; 2. Support frame; 3. First groove; 4. First motor; 5. First threaded rod; 6. Movable seat; 7. Second motor; 8. Fixed frame; 9. Second groove; 10. Third motor; 11. Second threaded rod; 12. Mounting plate; 13. Third groove; 14. Fourth motor; 15. First bidirectional threaded rod; 16. Clamping plate; 17. Suction cup; 18. Clamping frame; 19. Fixed rod; 20. Placement plate; 21. Spring; 22. Fifth motor; 23. Third threaded rod; 24. First moving block; 25. Telescopic rod; 26. Fixed plate; 27. Sixth motor; 28. Second bidirectional threaded rod; 29. Moving plate; 30. Caster wheel; 31. First sliding rod; 32. Second sliding rod; 33. Third sliding rod; 34. Fourth sliding rod; 35. Second moving block; 36. Fifth sliding rod; 37. Fourth groove. Detailed Implementation
[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0033] Please see Figure 1-7
[0034] Example 1
[0035] A modular teaching demonstration frame includes a base 1 and a support frame 2. A first groove 3 is symmetrically arranged on one side of the top of the base 1. A first motor 4 is fixedly connected to one side of the base 1. A first threaded rod 5 is fixedly connected to the output end of the first motor 4. A movable seat 6 is threadedly connected to the outer side of the first threaded rod 5. A second motor 7 is fixedly connected to one side of the movable seat 6. A fixed frame 8 is fixedly connected to the output end of the second motor 7. A second groove 9 is symmetrically arranged on one side of the fixed frame 8. A third motor 10 is fixedly connected to one side of the top of the fixed frame 8. A second threaded rod 11 is fixedly connected to the output end of the third motor 10. A mounting plate 12 is threadedly connected to the outer side of the second threaded rod 11.
[0036] Specific implementation process: Starting the first motor 4 can drive the first threaded rod 5 to rotate, thereby moving the movable seat 6. Starting the second motor 7 can drive the fixed frame 8 to rotate. Moving the movable seat 6 can adjust the horizontal position of the fixed frame 8, which can be adjusted at any time during use. At the same time, the angle of the fixed frame 8 can also be adjusted to the same horizontal position as the base 1. When not in use, it can be stored to reduce the space required. Starting the third motor 10 can drive the second threaded rod 11 to rotate, thereby moving the mounting plate 12. The height of the mounting plate 12 can be adjusted at any time.
[0037] A demonstration method for a modular teaching demonstration stand includes the following steps:
[0038] Step 1: Start the first motor 4, which drives the first threaded rod 5 to rotate, thereby moving the movable seat 6. Start the second motor 7, which drives the fixed frame 8 to rotate. Moving the movable seat 6 can adjust the horizontal position of the fixed frame 8, which can be adjusted at any time during use. At the same time, the angle of the fixed frame 8 can also be adjusted to adjust it to the same horizontal position as the base 1. When not in use, it can be stored to reduce the space required. Start the third motor 10, which drives the second threaded rod 11 to rotate, thereby moving the mounting plate 12. The height of the mounting plate 12 can be adjusted at any time.
[0039] Step 2: Start the fourth motor 14, which can drive the first bidirectional threaded rod 15 to rotate, which can drive the two clamping plates 16 to move relative to each other. The demonstration board to be displayed can be placed on the placement plate 20. The two clamping plates 16 are moved to clamp and fix it. Longer demonstration boards can be placed on the placement plate 20. The suction cups 17 on the clamping plates 16 can be used to attach and fix them. This is suitable for demonstration boards of different sizes. At the same time, the spring 21 can provide some cushioning and shock absorption.
[0040] Step 3: Start the fifth motor 22, which can drive the third threaded rod 23 to rotate, which can drive the first moving block 24 to move, thereby driving the base 1 to move and adjust the height of the base 1. When adjusting the height of the base 1, the telescopic rod 25 drives the fixed plate 26 to move until it contacts the ground to form support, and then the height of the base 1 is adjusted.
[0041] Step 4: Start the sixth motor 27, which can drive the second bidirectional threaded rod 28 to rotate, which can drive the two moving plates 29 to move and extend the two moving plates 29 outward to form a larger base 1, increasing the support area and making the placement more stable.
[0042] Example 2
[0043] Based on Embodiment 1: A third groove 13 is symmetrically provided on one side of the mounting plate 12. A fourth motor 14 is fixedly connected to one side of the mounting plate 12. A first bidirectional threaded rod 15 is fixedly connected to the output end of the fourth motor 14. A clamping plate 16 is symmetrically threaded to the outside of the first bidirectional threaded rod 15. A suction cup 17 is fixedly connected to one side of the clamping plate 16. A clamping frame 18 is symmetrically fixedly connected to one side of the bottom of the clamping plate 16. A fixing rod 19 is fixedly connected between the two sides inside the clamping frame 18. A placement plate 20 is slidably connected to the outside of the fixing rod 19. A spring 21 is fixedly connected to one side of the placement plate 20.
[0044] Specific implementation process: Start the fourth motor 14, which can drive the first bidirectional threaded rod 15 to rotate, which can drive the two clamping plates 16 to move relative to each other. The demonstration board to be displayed can be placed on the placement plate 20. Move the two clamping plates 16 to clamp and fix it. Longer demonstration boards can be placed on the placement plate 20. The suction cups 17 on the clamping plates 16 can be used to attach and fix them. This is suitable for demonstration boards of different sizes. At the same time, the spring 21 can provide some buffering and shock absorption.
[0045] Example 3
[0046] Based on Embodiment 1: According to claim 1, a combined teaching demonstration frame is provided with four support frames 2, which are symmetrically located on both sides of the base 1. A fifth motor 22 is fixedly connected to one side of the top of one support frame 2. A third threaded rod 23 is fixedly connected to the output end of the fifth motor 22. A first moving block 24 is threadedly connected to the outer side of the third threaded rod 23. One side of the first moving block 24 is fixedly connected to one side of the base 1. A telescopic rod 25 is fixedly connected to one side of the bottom of the support frame 2. A fixed plate 26 is fixedly connected to the telescopic end of the telescopic rod 25.
[0047] Specific implementation process: Start the fifth motor 22, which can drive the third threaded rod 23 to rotate, which can drive the first moving block 24 to move, thereby driving the base 1 to move and adjust the height position of the base 1. When adjusting the height of the base 1, the telescopic rod 25 drives the fixed plate 26 to move until it contacts the ground to form support, and then the height position of the base 1 is adjusted.
[0048] Example 4
[0049] Based on Embodiment 1: The base 1 has a fourth groove 37 symmetrically arranged on both sides inside. The base 1 has a sixth motor 27 fixedly connected to one side. The output end of the sixth motor 27 is fixedly connected to a second bidirectional threaded rod 28. The second bidirectional threaded rod 28 is symmetrically threaded to the outside of the second bidirectional threaded rod 28. The two moving plates 29 are symmetrically fixedly connected to one side of each of the two moving plates 29.
[0050] Specific implementation process: Start the sixth motor 27, which can drive the second bidirectional threaded rod 28 to rotate, which can drive the two moving plates 29 to move, and can drive the two moving plates 29 to extend outward to form a larger base 1, increasing the support area and making the placement more stable.
[0051] Example 5
[0052] Based on embodiments one to four: a first sliding rod 31 is fixedly connected between the two sides inside a first groove 3, and the other end of the movable seat 6 is slidably connected to the outside of the first sliding rod 31; a second sliding rod 32 is fixedly connected between the two sides inside a second groove 9, and the other end of the mounting plate 12 is slidably connected to the outside of the second sliding rod 32; a first threaded rod 5 is rotatably connected between the two sides inside a first groove 3; and a second threaded rod 11 is rotatably connected between the two sides inside a second groove 9.
[0053] A third sliding rod 33 is fixedly connected between the two sides inside a third groove 13. The other end of the clamping plate 16 is slidably connected to the outside of the third sliding rod 33. The first bidirectional threaded rod 15 is rotatably connected between the two sides inside a third groove 13. The fixed frame 8 is rotatably connected between the two sides inside the movable seat 6.
[0054] A fourth sliding rod 34 is fixedly connected between the two sides inside the three support frames 2. A second moving block 35 is slidably connected to the outside of the fourth sliding rod 34. One side of the second moving block 35 is fixedly connected to one side of the base 1. A third threaded rod 23 is rotatably connected between the two sides inside the support frame 2.
[0055] A fifth sliding rod 36 is fixedly connected between the two sides inside a fourth groove 37, and the other end of the movable plate 29 is slidably connected to the outside of the fifth sliding rod 36. A second bidirectional threaded rod 28 is rotatably connected between the two sides inside a fourth groove 37.
[0056] The other end of the spring 21 is fixedly connected to one side of the inside of the clamping frame 18, and the fixing rod 19 is located inside the spring 21;
[0057] Specific implementation process: The first sliding rod 31 is set to limit the movement of the movable seat 6; the second sliding rod 32 is set to limit the movement of the mounting plate 12; the third sliding rod 33 is set to limit the movement of the clamping plate 16; the fourth sliding rod 34 is set to limit the movement of the base 1; and the fifth sliding rod 36 is set to limit the movement of the movable plate 29.
[0058] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0059] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A modular teaching demonstration stand, comprising a base (1) and a support frame (2), characterized in that: The base (1) has a first groove (3) symmetrically arranged on one side of its top. A first motor (4) is fixedly connected to one side of the base (1). A first threaded rod (5) is fixedly connected to the output end of the first motor (4). A movable seat (6) is threadedly connected to the outer side of the first threaded rod (5). A second motor (7) is fixedly connected to one side of the movable seat (6). A fixed frame (8) is fixedly connected to the output end of the second motor (7). A second groove (9) is symmetrically arranged on one side of the fixed frame (8). A third motor (10) is fixedly connected to one side of the top of the fixed frame (8). A second threaded rod (11) is fixedly connected to the output end of the third motor (10). A mounting plate (12) is threadedly connected to the outer side of the second threaded rod (11).
2. The modular teaching demonstration rack according to claim 1, characterized in that: The mounting plate (12) has a third groove (13) symmetrically arranged on one side. A fourth motor (14) is fixedly connected to one side of the mounting plate (12). A first bidirectional threaded rod (15) is fixedly connected to the output end of the fourth motor (14). A clamping plate (16) is symmetrically threaded to the outside of the first bidirectional threaded rod (15). A suction cup (17) is fixedly connected to one side of the clamping plate (16). A clamping frame (18) is symmetrically fixedly connected to one side of the bottom of the clamping plate (16). A fixing rod (19) is fixedly connected between the two sides inside the clamping frame (18). A placement plate (20) is slidably connected to the outside of the fixing rod (19). A spring (21) is fixedly connected to one side of the placement plate (20).
3. The modular teaching demonstration rack according to claim 1, characterized in that: Four support frames (2) are provided and are symmetrically located on both sides of the base (1). A fifth motor (22) is fixedly connected to one side of the top of one support frame (2). A third threaded rod (23) is fixedly connected to the output end of the fifth motor (22). A first moving block (24) is threadedly connected to the outer side of the third threaded rod (23). One side of the first moving block (24) is fixedly connected to one side of the base (1). A telescopic rod (25) is fixedly connected to one side of the bottom of the support frame (2). A fixed plate (26) is fixedly connected to the telescopic end of the telescopic rod (25).
4. The modular teaching demonstration rack according to claim 1, characterized in that: The base (1) has a fourth groove (37) symmetrically arranged on both sides inside. A sixth motor (27) is fixedly connected to one side of the base (1). A second bidirectional threaded rod (28) is fixedly connected to the output end of the sixth motor (27). A movable plate (29) is symmetrically threaded to the outside of the second bidirectional threaded rod (28). A universal wheel (30) is symmetrically fixedly connected to one side of each of the two movable plates (29).
5. A modular teaching demonstration rack according to claim 1, characterized in that: A first sliding rod (31) is fixedly connected between the two sides inside the first groove (3), and the other end of the movable seat (6) is slidably connected to the outside of the first sliding rod (31). A second sliding rod (32) is fixedly connected between the two sides inside the second groove (9), and the other end of the mounting plate (12) is slidably connected to the outside of the second sliding rod (32). A first threaded rod (5) is rotatably connected between the two sides inside the first groove (3), and a second threaded rod (11) is rotatably connected between the two sides inside the second groove (9).
6. A modular teaching demonstration rack according to claim 2, characterized in that: A third sliding rod (33) is fixedly connected between the two sides inside the third groove (13), and the other end of the clamping plate (16) is slidably connected to the outside of the third sliding rod (33). The first bidirectional threaded rod (15) is rotatably connected between the two sides inside the third groove (13), and the fixed frame (8) is rotatably connected between the two sides inside the movable seat (6).
7. A modular teaching demonstration rack according to claim 1, characterized in that: A fourth sliding rod (34) is fixedly connected between the two sides inside the three support frames (2). A second moving block (35) is slidably connected to the outside of the fourth sliding rod (34). One side of the second moving block (35) is fixedly connected to one side of the base (1). The third threaded rod (23) is rotatably connected between the two sides inside one of the support frames (2).
8. A modular teaching demonstration rack according to claim 4, characterized in that: A fifth sliding rod (36) is fixedly connected between the two sides inside the fourth groove (37), and the other end of the moving plate (29) is slidably connected to the outside of the fifth sliding rod (36). The second bidirectional threaded rod (28) is rotatably connected between the two sides inside the fourth groove (37).
9. A modular teaching demonstration rack according to claim 2, characterized in that: The other end of the spring (21) is fixedly connected to one side inside the clamping frame (18), and the fixing rod (19) is located inside the spring (21).
10. A demonstration method for a combined teaching demonstration rack according to any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Start the first motor (4), which can drive the first threaded rod (5) to rotate, thereby driving the movable seat (6) to move. Start the second motor (7), which can drive the fixed frame (8) to rotate. The movement of the movable seat (6) can adjust the horizontal position of the fixed frame (8), which can be adjusted at any time during use. At the same time, the angle of the fixed frame (8) can also be adjusted to the same horizontal position as the base (1). When not in use, it can be stored to reduce the space required. Start the third motor (10), which can drive the second threaded rod (11) to rotate, thereby driving the mounting plate (12) to move. The height of the mounting plate (12) can be adjusted at any time. Step 2: Start the fourth motor (14), which can drive the first bidirectional threaded rod (15) to rotate, which can drive the two clamping plates (16) to move relative to each other. The demonstration board to be displayed can be placed on the placement plate (20). Move the two clamping plates (16) to clamp and fix it. Longer demonstration boards can be placed on the placement plate (20). The suction cups (17) on the clamping plates (16) can be used to attach and fix it. It is suitable for demonstration boards of different sizes. At the same time, the spring (21) can provide some buffering and shock absorption. Step 3: Start the fifth motor (22), which can drive the third threaded rod (23) to rotate, which can drive the first moving block (24) to move, thereby driving the base (1) to move, and adjusting the height of the base (1). When adjusting the height of the base (1), the telescopic rod (25) drives the fixed plate (26) to move, moving it to contact the ground to form support, and then adjusting the height of the base (1). Step 4: Start the sixth motor (27), which can drive the second bidirectional threaded rod (28) to rotate, which can drive the two moving plates (29) to move, and can drive the two moving plates (29) to extend outward to form a larger base (1), increasing the support area and making the placement more stable.