A foldable stand for teaching that is easy to store and carry

Abstract

The present invention belongs to the technical field of folding brackets, and specifically provides a foldable bracket for teaching that is easy to store and carry, including a folding display assembly and a folding bracket assembly. The device can control the folding and unfolding of the first display unit and the second display unit according to actual teaching needs, and achieve the technical effect of flexibly adjusting the size of the folding display assembly, which can meet different teaching needs; when the device is not in use, the folding bracket assembly is arranged in a folded state between symmetrical folding display assemblies, which is convenient for users to carry and carry. When the device is in use, the user starts the synchronous adjustment motor through the control button, and the first synchronous belt and the second synchronous belt can control the first leg and the second leg to unfold synchronously, and adjust the angle and position of the mobile support plate through the support plate adjustment motor and the screw rotation motor respectively, to ensure that the mobile support plate and the mobile wheel are firmly supported on the ground, thereby ensuring the stability of the entire device.

Description

Technical Field

[0001] The invention belongs to the technical field of folding brackets, and specifically provides a foldable bracket for teaching that is easy to store and carry. Background Art

[0002] Teaching devices represented by interactive smart tablets have become standard in modern classrooms. Interactive smart tablets integrate multiple functions such as writing, annotation, touch, multimedia display, etc., providing great convenience for teaching. With the continuous advancement of technology, the resolution, color expression, touch sensitivity, etc. of these tablets are constantly improving.

[0003] Existing interactive smart tablets are usually installed in fixed positions in classrooms or conference rooms, which limits the scope of interaction between participants and the tablets. Participants may feel inconvenienced when they need to move away from the tablets to operate or view. In some scenarios that require flexible adjustment of layout or equipment, the fixed nature of the teaching device may become an obstacle. For example, in group discussions or temporary teaching scenarios, the tablets may need to be moved to different positions to meet the needs of the participants. In this case, the interactive smart tablets need to be set on movable brackets. However, existing mobile brackets generally lack folding kinetic energy, occupy a large space, are difficult to carry and transfer, and have many inconveniences during use.

[0004] Therefore, it is necessary to provide a foldable teaching stand that is easy to store and carry, so as to solve the technical problems existing in the existing teaching devices. Summary of the invention

[0005] In order to solve the above-mentioned existing problems, the present invention provides a foldable teaching stand that is easy to store and carry. The device is provided with a folding display component, which can control the folding and unfolding of the first display unit and the second display unit according to actual teaching needs, thereby achieving the technical effect of flexibly adjusting the size of the folding display component and meeting different teaching needs; the device is also provided with a folding bracket component. When the device is not in use, the folding bracket component is arranged in a folded state between symmetrical folding display components, which is convenient for users to carry and carry. When the device is in use, the user starts the synchronous adjustment motor through the control button, and the first synchronous belt and the second synchronous belt can control the first section of the leg and the second section of the leg to unfold synchronously, and the angle and position of the mobile support plate are adjusted respectively through the support plate adjustment motor and the screw rotation motor to ensure that the mobile support plate and the moving wheel are firmly supported on the ground, thereby ensuring the stability of the entire device.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0007] The foldable stand for teaching provided by the present invention is easy to store and carry, comprising a foldable stand assembly, the foldable stand assembly is movably provided with a foldable display assembly in pairs, the foldable stand assembly comprises a supporting cross bar, a supporting vertical bar, a supporting frame, a supporting tube, a rotating disk, a first section of the supporting leg, a second section of the supporting leg and a movable support plate, the supporting vertical bar is arranged on one side of the foldable display assembly, the supporting cross bar is rotatably connected to one end of the supporting vertical bar, the supporting frame is rotatably connected to the other end of the supporting vertical bar, the supporting tube is fixedly arranged at the end of the supporting frame, the rotating disk is rotatably arranged on both side end surfaces of the supporting tube, the side walls of the rotating disk are respectively provided with connecting rods, and the connecting rods are respectively fixed to the foldable display assemblies arranged in pairs, the first section of the supporting leg is symmetrically rotatably arranged at the two ends of the supporting cross bar, the second section of the supporting leg is respectively rotatably arranged at the ends of the first section of the supporting leg, and the movable support plate is respectively movably connected to the ends of the second section of the supporting leg.

[0008] Furthermore, the folding display assembly includes a first display unit, a second display unit and a display rotating motor, the first display units are fixed on the connecting rods, the second display units are rotatably arranged on the edges of the first display units, the display rotating motors are arranged at the rotating connection between the first display unit and the second display unit, and the output end of the display rotating motor is connected to the edge of the second display unit.

[0009] Furthermore, a first pulley is symmetrically rotated at the middle position of the side wall of the supporting cross bar, a second pulley is fixedly provided at the rotating shaft of one end of the first leg close to the supporting cross bar, a first synchronous belt is arranged around the side walls of the first pulley and the second pulley, a circular array of synchronous teeth is arranged on the side wall of the first pulley close to one end of the supporting cross bar, the synchronous teeth arranged on the paired side walls of the first pulleys are meshed with each other, a synchronous adjustment motor is arranged on the side wall of the supporting cross bar, and the output end of the synchronous adjustment motor is connected to the rotating shaft of one of the first pulleys.

[0010] Furthermore, a third pulley is symmetrically fixed at both ends of the side wall of the supporting crossbar, a fourth pulley is fixed at the rotating shaft of the second leg near one end of the first leg, and a second synchronous belt is arranged around the side walls of the third pulley and the fourth pulley.

[0011] Furthermore, a slave bevel gear is fixedly provided at the center of the end surface of the rotating disk close to the inside of the supporting tube, an unfolding motor is provided on the side wall of the supporting tube, a main bevel gear is provided at the output end of the unfolding motor, the main bevel gear is rotatably arranged in the supporting tube, and the slave bevel gears are respectively meshed with the main bevel gears.

[0012] Furthermore, a support plate adjusting motor is provided at one end of the second support leg away from the fourth pulley, an adjusting screw is rotatably provided on the side wall of the movable support plate, a sliding block is sleeved on the adjusting screw, the sliding block is threadedly connected to the adjusting screw, and the sliding block is fixedly arranged at the output end of the support plate adjusting motor.

[0013] Furthermore, a first angle adjustment motor is provided at the rotating shaft of the supporting vertical rod and the supporting cross rod, the first angle adjustment motor and the supporting cross rod are fixedly connected, and the output end of the first angle adjustment motor is connected to the rotating shaft of the supporting vertical rod; a second angle adjustment motor is provided at the rotating shaft of the supporting frame and the supporting vertical rod, the second angle adjustment motor and the supporting vertical rod are fixedly connected, and the output end of the second angle adjustment motor is connected to the rotating shaft of the supporting frame; a screw rotating motor is provided at one end of the adjusting screw, the screw rotating motor is fixedly connected to the movable support plate, and the output end of the screw rotating motor is connected to the end of the adjusting screw.

[0014] Furthermore, a movable handle is rotatably provided on one side edge of the first display unit, and an auxiliary handle is fixedly provided on the other side edge of the first display unit, wherein a control handle is provided on the side wall of one of the movable handles, and a control button is provided on the control handle.

[0015] Furthermore, movable wheels are symmetrically and rotatably provided on the movable support plate, and a main controller is provided inside the supporting vertical rod.

[0016] Furthermore, the display rotating motor, synchronous adjustment motor, first angle adjustment motor, second angle adjustment motor, unfolding motor, screw rotating motor and control button are electrically connected to the main controller respectively.

[0017] Furthermore, the main controller adopts a PIC16F877A single-chip microcomputer.

[0018] The beneficial effects achieved by the present invention using the above structure are:

[0019] (1) The device is provided with a folding display component, which can control the folding and unfolding of the first display unit and the second display unit according to actual teaching needs, thereby achieving the technical effect of flexibly adjusting the size of the folding display component and meeting different teaching needs;

[0020] (2) The device is also provided with a folding bracket assembly. When the device is not in use, the folding bracket assembly is folded and arranged between the symmetrical folding display assemblies to facilitate the user to carry it;

[0021] (3) When the device is in use, the user controls the synchronous adjustment motor to start by using the control button. The synchronous adjustment motor drives the first pulley to rotate. The paired first pulleys realize reverse rotation through the meshing of synchronous teeth. The first pulleys respectively drive the second pulleys to rotate, thereby making the symmetrically arranged first leg unfold. During the unfolding of the first leg, since the third pulley is fixed on the supporting cross bar, the second synchronous belt will move relative to the first leg under the limitation of the third pulley, and drive the fourth pulley to rotate relative to the first leg, thereby making the second leg rotate relative to the first leg, realizing the synchronous unfolding of the first leg and the second leg, and adjusting the angle and position of the mobile support plate through the support plate adjustment motor and the screw rotation motor, respectively, to ensure that the mobile support plate and the mobile wheel are firmly supported on the ground, thereby ensuring the stability of the entire device;

[0022] (4) When the folding display assembly is unfolded, the unfolding motor starts and drives the main bevel gear to rotate. The main bevel gear also drives the two symmetrical slave bevel gears to rotate, so that the rotating disk rotates relative to the support tube. The rotating disk drives the first display unit to unfold symmetrically. At this time, the display rotation motor drives the second display unit to rotate relative to the first display unit to realize the unfolding of the folding display assembly. At the same time, the second angle adjustment motor drives the support frame to rotate 90 degrees, so that the first display unit and the second display unit face the user, thereby increasing the use area of ​​the folding display assembly to meet various teaching and writing needs;

[0023] (5) The first angle adjustment motor and the second angle adjustment motor can respectively control the rotation of the supporting vertical rod and the supporting frame, thereby achieving the technical effect of flexibly adjusting the tilt angle of the folding display component in the folded and unfolded states;

[0024] (6) The setting of the movable handle makes it convenient for users to carry and move the device in the folded state. When the device needs to be unfolded for use, the user can grasp the movable handle and the auxiliary handle with both hands respectively, and start the unfolding process by manually pressing the control button. It does not require complicated manual operation and is simple and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the structure of a foldable teaching stand in a folded state that is easy to store and carry provided by the present invention;

[0026] Figure 2 A schematic diagram of the structure of a foldable teaching stand provided by the present invention that is easy to store and carry, when the foldable stand assembly is in an unfolded state;

[0027] Figure 3 is a schematic diagram of a first structure of the folding bracket assembly in a folded state;

[0028] Figure 4is a schematic diagram of a second structure of the folding bracket assembly in a folded state;

[0029] Figure 5 is a schematic diagram of a first structure of the folding bracket assembly in an unfolded state;

[0030] Figure 6 for Figure 5 A magnified schematic diagram of part A;

[0031] Figure 7 is a schematic diagram of a second structure of the folding bracket assembly in an unfolded state;

[0032] Figure 8 for Figure 7 A magnified schematic diagram of part B;

[0033] Fig. 9 A first structural schematic diagram of a foldable display assembly and a foldable support assembly being simultaneously unfolded;

[0034] Fig.10 A second structural schematic diagram showing a foldable display assembly and a foldable support assembly being simultaneously unfolded;

[0035] Fig.11 A schematic diagram of the connection structure of the support vertical rod, the support frame, the support tube, the connecting rod and the first display unit;

[0036] Fig.12 It is a cross-sectional view of the support cylinder, the rotating disk, the slave bevel gear, the unfolding motor and the master bevel gear;

[0037] Fig.13 It is a schematic diagram of the connection structure of the second leg, the support plate adjustment motor, the sliding block, the movable support plate and the adjustment screw rod.

[0038] Among them, 1. folding display assembly, 2. folding bracket assembly, 3. first display unit, 4. second display unit, 5. display rotating motor, 6. supporting cross bar, 7. supporting vertical bar, 8. supporting frame, 9. supporting cylinder, 10. rotating disk, 11. first section of the supporting leg, 12. second section of the supporting leg, 13. moving supporting plate, 14. first pulley, 15. synchronous teeth, 16. first synchronous belt, 17. synchronous adjustment motor, 18. second pulley, 19. first angle adjustment motor, 20. second angle adjustment motor, 21. unfolding motor, 22. main bevel gear, 23. connecting rod, 24. slave bevel gear, 25. third pulley, 26. supporting plate adjustment motor, 27. fourth pulley, 28. second synchronous belt, 29. moving wheel, 30. adjusting screw, 31. sliding block, 32. screw rotating motor, 33. moving handle, 34. auxiliary handle, 35. control grip, 36. control button. DETAILED DESCRIPTION

[0039] The technical solution of the present invention is further described in detail below in conjunction with specific embodiments. The parts of the technical features or connection relationships described in the present invention that are not described in detail are all existing technologies adopted.

[0040] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0041] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 and Fig.13 As shown, the present invention provides a foldable teaching stand that is easy to store and carry, including a foldable display assembly 1 and a foldable stand assembly 2. The foldable display assembly 1 is movably arranged on the foldable stand assembly 2 in pairs. The foldable stand assembly 2 includes a supporting cross bar 6, a supporting vertical bar 7, a supporting frame 8, a supporting cylinder 9, a rotating disk 10, a first leg 11, a second leg 12 and a movable support plate 13. The supporting vertical bar 7 is arranged on one side of the foldable display assembly 1. A main controller (not shown in the drawings) is arranged inside the supporting vertical bar 7. The supporting cross bar 6 is rotatably connected to one end of the supporting vertical bar 7. The support frame 8 is rotatably connected to the other end of the supporting vertical rod 7, the supporting tube 9 is fixedly arranged at the end of the supporting frame 8, the rotating disk 10 is rotatably arranged on the two side end surfaces of the supporting tube 9 in pairs, and the side walls of the rotating disk 10 are respectively provided with connecting rods 23, and the connecting rods 23 are respectively fixed to the folding display components 1 arranged in pairs. The first section of the support leg 11 is symmetrically rotatably arranged at the two ends of the supporting cross bar 6, and the second section of the support leg 12 is respectively rotatably arranged at the end of the first section of the support leg 11, and the movable support plate 13 is respectively movably connected to the end of the second section of the support leg 12, and the movable support plate 13 is symmetrically penetrated and rotatably provided with a movable wheel 29.

[0042] The folding display assembly 1 includes a first display unit 3, a second display unit 4 and a display rotating motor 5. The first display unit 3 is fixed on the connecting rod 23, the second display unit 4 is rotatably arranged on the edge of the first display unit 3, the display rotating motor 5 is arranged at the rotating connection between the first display unit 3 and the second display unit 4, and the output end of the display rotating motor 5 is connected to the edge of the second display unit 4.

[0043] A first pulley 14 is symmetrically rotated at the middle position of the side wall of the supporting cross bar 6, a second pulley 18 is fixedly provided at the rotating shaft of one end of the first leg 11 close to the supporting cross bar 6, a first synchronous belt 16 is arranged around the side walls of the first pulley 14 and the second pulley 18, a synchronous tooth 15 is arranged in a circular array on the side wall of the first pulley 14 close to one end of the supporting cross bar 6, the synchronous tooth 15 arranged on the side walls of the paired first pulleys 14 are meshed with each other, a synchronous adjustment motor 17 is arranged on the side wall of the supporting cross bar 6, and the output end of the synchronous adjustment motor 17 is connected to the rotating shaft of one of the first pulleys 14; third pulleys 25 are symmetrically fixedly provided at both ends of the side wall of the supporting cross bar 6, a fourth pulley 27 is fixedly provided at the rotating shaft of the second leg 12 close to one end of the first leg 11, and a second synchronous belt 28 is arranged around the side walls of the third pulley 25 and the fourth pulley 27.

[0044] A slave bevel gear 24 is fixedly provided at the center of the end face of the rotating disk 10 near the inside of the supporting tube 9. An unfolding motor 21 is provided on the side wall of the supporting tube 9. A main bevel gear 22 is provided at the output end of the unfolding motor 21. The main bevel gear 22 is rotatably arranged in the supporting tube 9, and the slave bevel gears 24 are respectively meshed with the main bevel gear 22.

[0045] The end of the second leg 12 away from the fourth pulley 27 is provided with a support plate adjusting motor 26, and the side wall of the mobile support plate 13 is rotated with an adjusting screw rod 30, and a sliding block 31 is sleeved on the adjusting screw rod 30, and the sliding block 31 is threadedly connected to the adjusting screw rod 30, and the sliding block 31 is fixedly arranged at the output end of the support plate adjusting motor 26; a first angle adjustment motor 19 is provided at the rotating shaft of the support vertical rod 7 and the support cross bar 6, and the first angle adjustment motor 19 and the support cross bar 6 are fixedly connected, and the output end of the first angle adjustment motor 19 is connected to the rotating shaft of the support vertical rod 7, and a second angle adjustment motor 20 is provided at the rotating shaft of the support frame 8 and the support vertical rod 7, and the second angle adjustment motor 20 and the support vertical rod 7 are fixedly connected, and the output end of the second angle adjustment motor 20 is connected to the rotating shaft of the support frame 8, and one end of the adjusting screw rod 30 is provided with a screw rotation motor 32, and the screw rotation motor 32 is fixedly connected to the mobile support plate 13, and the output end of the screw rotation motor 32 is connected to the end of the adjusting screw rod 30.

[0046] A movable handle 33 is rotatably provided on one side edge of the first display unit 3 , and an auxiliary handle 34 is fixedly provided on the other side edge of the first display unit 3 . A control grip 35 is provided on the side wall of one of the movable handles 33 , and a control button 36 is provided on the control grip 35 .

[0047] The display rotating motor 5, the synchronous adjustment motor 17, the first angle adjustment motor 19, the second angle adjustment motor 20, the unfolding motor 21, the screw rotating motor 32 and the control button 36 are electrically connected to the main controller respectively.

[0048] Working principle and workflow:

[0049] When not in use, the device Figure 1 In the folded state shown in the figure, the user can lift the device by holding the control handle 35 and carry the device to a place where it is needed. At this time, the user holds the control handle 35 with one hand and the auxiliary handle 34 with the other hand to rotate the device 90 degrees so that the support cross bar 6 remains horizontal and ensures that the support cross bar 6 is set downward, such as Figure 3 or Figure 4 In the state shown, the user sends a command to the main controller (not shown in the drawings) arranged inside the supporting vertical rod 7 by pressing the control button 36 on the control handle 35, and the main controller starts the deployment procedure of the device. First, the main controller controls the synchronous adjustment motor 17 to start, and the synchronous adjustment motor 17 drives one of the first pulleys 14 to rotate. The paired first pulleys 14 rotate in the opposite direction under the limitation of the synchronous teeth 15, and the symmetrically arranged second pulleys 18 rotate synchronously under the drive of the first synchronous belt 16, so that the first leg section 11 rotates relative to the supporting cross bar 6, and the first leg section 11 is deployed;

[0050] When the first leg 11 is unfolded, since the third pulley 25 is fixed on the supporting cross bar 6, the second synchronous belt 28 will move relative to the first leg 11 under the limitation of the third pulley 25, and drive the fourth pulley 27 to rotate relative to the first leg 11, so that the second leg 12 rotates relative to the first leg 11, thereby achieving the effect of synchronously unfolding the first leg 11 and the second leg 12;

[0051] When the first leg 11 rotates 180 degrees and is set perpendicular to the ground, the second leg 12 is also perpendicular to the ground. At this time, the main controller starts the support plate adjusting motor 26 to rotate the mobile support plate 13 90 degrees. At this time, the mobile support plate 13 is parallel to the ground, and the sliding block 31 is located at one end of the adjusting screw rod 30. The screw rod rotating motor 32 is started synchronously to drive the adjusting screw rod 30 to rotate. Since the adjusting screw rod 30 is threadedly connected to the sliding block 31, the adjusting screw rod 30 will move relative to the sliding block 31 while rotating, so that the sliding block 31 moves to the middle position of the adjusting screw rod 30, ensuring that the mobile support plate 13 and the moving wheel 29 can be firmly supported on the ground, thereby ensuring the stability of the entire device. At this time, the user can slowly place the device on the ground. At this time, the device is as follows Figure 2 Status shown.

[0052] The user can adjust the size of the folding display assembly 1 according to teaching needs. The user sends a command to the main controller by pressing the control button 36 on the control handle 35. The main controller starts the unfolding motor 21. The unfolding motor 21 drives the main bevel gear 22 to rotate. The main bevel gear 22 also drives the two symmetrical slave bevel gears 24 to rotate, so that the rotating disk 10 rotates relative to the support tube 9. The connecting rod 23 will drive the first display unit 3 to unfold symmetrically. During the unfolding process of the first display unit 3, the display rotation motor 5 will automatically start and drive the second display unit 4 to rotate relative to the first display unit 3. The first display unit 3 and the second display unit 4 are now spliced ​​together to form a larger display screen usage surface, thereby increasing the usage area of ​​the folding display assembly 1 to meet various writing teaching needs. At the same time, the second angle adjustment motor 20 drives the support frame 8 to rotate 90 degrees, so that the first display unit 3 and the second display unit 4 face the user, which is convenient for the user to use. Fig. 9 and Fig.10 The status shown;

[0053] During use of the device, the user can adjust the tilt angle of the folding display component 1 through the control button 36. The main controller can respectively start the first angle adjustment motor 19 and the second angle adjustment motor 20 to control the rotation of the supporting vertical rod 7 and the supporting frame 8, thereby achieving the technical effect of flexibly adjusting the tilt angle of the folding display component 1 in the folded and unfolded states. The structure and principle of the control button 36 are existing technologies and will not be described in detail here.

[0054] After the use of the device is completed, the user starts the folding program of the device through the control button 36, the main controller controls the second angle adjustment motor 20 to rotate, so that the support frame 8 is rotated back to the vertical state, and at the same time the display rotation motor 5 drives the second display unit 4 to rotate, so that the second display unit 4 and the first display unit 3 are refolded, the unfolding motor 21 is started and controls the symmetrical first display units 3 to separate from each other and rotate back to parallel positions, the user then grasps the moving handle 33 and the auxiliary handle 34 again at the same time, the synchronous adjustment motor 17 is started and drives the first section of the support leg 11 and the second section of the support leg 12 to rotate back to the initial position, and at the same time the support plate adjustment motor 26 and the screw rotation motor 32 control the moving support plate 13 to move to the initial position, at this time the folding bracket assembly 2 is refolded back between the folding display assembly 1, completing the folding process of the device and leaving it for the next use.

[0055] It should be noted that the control button 36 is set as multiple buttons, and each control button 36 can control the display rotating motor 5, the synchronous adjustment motor 17, the first angle adjustment motor 19, the second angle adjustment motor 20, the unfolding motor 21 and the screw rotating motor 32 to start or shut down.

[0056] The first display unit 3 adopts a multimedia electronic touch screen for teaching, which can display rich teaching screen content. The second display unit 4 adopts a liquid crystal electronic handwriting screen. Users can write on the blackboard on the second display unit 4 according to teaching needs. It is flexible and convenient. The liquid crystal electronic handwriting screen and the multimedia electronic touch screen for teaching are both existing technologies, and their principles and structures are not described here.

[0057] The above is the overall workflow of the present invention, and you can repeat this step next time you use it.

[0058] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A foldable stand for teaching that is easy to store and carry, characterized in that: The foldable display device comprises a foldable support assembly (2), wherein the foldable display assembly (1) is movably provided in pairs on the foldable support assembly (2), wherein the foldable display assembly (2) comprises a support cross bar (6), a support vertical bar (7), a support frame (8), a support tube (9), a rotating disk (10), a first section of a support leg (11), a second section of a support leg (12) and a movable support plate (13), wherein the support vertical bar (7) is provided on one side of the foldable display assembly (1), the support cross bar (6) is rotatably connected to one end of the support vertical bar (7), the support frame (8) is rotatably connected to the other end of the support vertical bar (7), the support tube (9) is fixedly provided at the end of the support frame (8), the rotating disk (10) is rotatably provided in pairs on both side end surfaces of the support tube (9), and the side walls of the rotating disk (10) are respectively provided with connecting rods (23), and the connecting rods (23) are respectively connected to the pair of The folding display assembly (1) is fixed to each other, the first leg section (11) is symmetrically rotatably arranged at the two ends of the supporting cross bar (6), the second leg section (12) is respectively rotatably arranged at the end of the first leg section (11), the movable support plate (13) is respectively movably connected to the end of the second leg section (12), a fourth pulley (27) is fixedly arranged at the rotation axis of the second leg section (12) close to one end of the first leg section (11), a support plate adjustment motor (26) is arranged at one end of the second leg section (12) away from the fourth pulley (27), an adjustment screw rod (30) is rotatably arranged on the side wall of the movable support plate (13), a sliding block (31) is sleeved on the adjustment screw rod (30), the sliding block (31) is threadedly connected to the adjustment screw rod (30), and the sliding block (31) is fixedly arranged at the output end of the support plate adjustment motor (26).

2. A foldable teaching stand that is easy to store and carry according to claim 1, characterized in that: The folding display assembly (1) comprises a first display unit (3), a second display unit (4) and a display rotation motor (5); the first display unit (3) is fixedly mounted on a connecting rod (23); the second display unit (4) is rotatably mounted on an edge of the first display unit (3); the display rotation motor (5) is mounted at a rotation connection between the first display unit (3) and the second display unit (4); and an output end of the display rotation motor (5) is connected to an edge of the second display unit (4).

3. The foldable teaching stand that is easy to store and carry according to claim 2, characterized in that: A first pulley (14) is symmetrically rotated at the middle position of the side wall of the support cross bar (6); a second pulley (18) is fixedly provided at the rotation axis of one end of the first leg (11) close to the support cross bar (6); a first synchronous belt (16) is arranged around the side walls of the first pulley (14) and the second pulley (18); a synchronous tooth (15) is arranged in an annular array on the side wall of the first pulley (14) close to one end of the support cross bar (6); the synchronous tooth (15) arranged on the side walls of the paired first pulleys (14) are meshed with each other; a synchronous adjustment motor (17) is provided on the side wall of the support cross bar (6); an output end of the synchronous adjustment motor (17) is connected to the rotation axis of one of the first pulleys (14).

4. The foldable teaching stand that is easy to store and carry according to claim 3 is characterized by: The third pulleys (25) are symmetrically fixedly provided at both ends of the side wall of the supporting crossbar (6), and the second synchronous belt (28) is provided around the side walls of the third pulley (25) and the fourth pulley (27).

5. The foldable teaching stand that is easy to store and carry according to claim 4, characterized in that: A secondary bevel gear (24) is fixedly provided at the center of the end surface of the rotating disk (10) close to the inside of the supporting tube (9), an unfolding motor (21) is provided on the side wall of the supporting tube (9), a main bevel gear (22) is provided at the output end of the unfolding motor (21), the main bevel gear (22) is rotatably arranged in the supporting tube (9), and the secondary bevel gears (24) are respectively arranged to mesh with the main bevel gear (22).

6. The foldable teaching stand that is easy to store and carry according to claim 5, characterized in that: A first angle adjustment motor (19) is provided at the rotation axis of the support vertical rod (7) and the support horizontal rod (6); the first angle adjustment motor (19) and the support horizontal rod (6) are fixedly connected; the output end of the first angle adjustment motor (19) is connected to the rotation axis of the support vertical rod (7); a second angle adjustment motor (20) is provided at the rotation axis of the support frame (8) and the support vertical rod (7); the second angle adjustment motor (20) and the support vertical rod (7) are fixedly connected; the output end of the second angle adjustment motor (20) is connected to the rotation axis of the support frame (8); a screw rotating motor (32) is provided at one end of the adjusting screw rod (30); the screw rotating motor (32) is fixedly connected to the movable support plate (13); the output end of the screw rotating motor (32) is connected to the end of the adjusting screw rod (30).

7. The foldable teaching stand that is easy to store and carry according to claim 6, characterized in that: A movable handle (33) is rotatably provided on one side edge of the first display unit (3), and an auxiliary handle (34) is fixedly provided on the other side edge of the first display unit (3), wherein a control grip (35) is provided on the side wall of one of the movable handles (33), and a control button (36) is provided on the control grip (35).

8. The foldable teaching stand that is easy to store and carry according to claim 7, characterized in that: The movable support plate (13) is symmetrically provided with movable wheels (29) that penetrate and rotate, and the support vertical rod (7) is provided with a main controller inside.

9. The foldable teaching stand that is easy to store and carry according to claim 8, characterized in that: The display rotating motor (5), the synchronous adjustment motor (17), the first angle adjustment motor (19), the second angle adjustment motor (20), the unfolding motor (21), the screw rotating motor (32) and the control button (36) are respectively electrically connected to the main controller.

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