A self-adjustable teaching multimedia podium and control method

Abstract

The present invention relates to the technical field of multimedia teaching equipment, and in particular to an adaptively adjustable teaching multimedia podium and a control method. When in use, the expansion board designed by the present invention is supported by two auxiliary support rods and a support ring of a pulley assembly, thereby preventing the pulley from deforming when the expansion board carries a heavy object, thereby causing damage to the expansion board. The designed lifting mechanism and screen adjustment mechanism are linked. When adjusting the height of the podium, the screen can be initially adjusted to a suitable height (the screen is in the vicinity of a 20° angle range below the eye level) according to the BIFMA G1 standard. Then the teacher can control two fine-tuning motors to fine-tune the height and inclination of the screen, thereby shortening the preliminary preparation time. After the designed laser pen is reset, the multimedia podium detects whether there is a storage device that has not been removed from the USB interface, and uses an indicator light to remind the teacher, thereby preventing the teacher from forgetting to remove the storage device after the lecture, resulting in the loss of the storage device.

Description

Technical Field

[0001] The invention relates to the technical field of multimedia teaching equipment, and in particular to an adaptively adjustable teaching multimedia podium and a control method thereof. Background Art

[0002] With the development of the times and the advancement of science and technology, teaching methods are becoming increasingly diverse. Compared with traditional teaching, multimedia teaching not only includes text but also pictures, videos, audios and various teaching models. The increasingly diverse multimedia teaching also puts forward more requirements for multimedia teaching equipment. At present, the patent CN217986972U discloses a multimedia podium, which can adjust the expansion board through gear racks to effectively avoid device volume redundancy. There is also a multimedia podium CN109588865B that can adjust the height of the equipment. However, it is found in actual use that the height of the multimedia podium is adjustable, but the inclination and height of the screen on the podium cannot be adjusted, which causes the teacher to tilt his body to see the screen clearly when using it, causing inconvenience, and the expansion board adopts a pulley structure, which is easily damaged after bearing heavy objects, resulting in difficulty in sliding. Summary of the invention

[0003] In view of the deficiencies mentioned in the above technical background, the object of the present invention is to provide a self-adaptive teaching multimedia podium and a control method.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] An adaptively adjustable teaching multimedia podium and control method, comprising a lifting mechanism, a multimedia podium is arranged above the lifting mechanism, and a screen adjustment mechanism is arranged on the multimedia podium;

[0006] The lifting mechanism includes a lifting assembly and a lifting platform for adjusting the height of the podium;

[0007] The multimedia podium comprises a podium body, an adjustment cavity is provided inside the podium body for storing the angle adjustment component, and an anti-damage expansion plate is provided inside the podium body;

[0008] The screen adjustment mechanism and the lifting mechanism are linked to preliminarily adjust the height and angle of the active screen, and the screen adjustment mechanism fine-adjusts the height and angle of the active screen.

[0009] As a further description of the scheme of the present invention, the lifting mechanism is equipped with a lifting base, and a detachable moving component is arranged under the lifting base. The moving component can be increased or decreased according to actual needs. An auxiliary support sleeve is arranged on the lifting base, and the auxiliary support sleeve has the functions of auxiliary support and telescopic. A lifting platform is arranged on the upper surface of the auxiliary support sleeve, and a through hole is opened on the lifting platform. A lifting component is arranged inside the lifting base, and the moving end of the lifting component is connected to the lifting platform.

[0010] As a further description of the solution of the present invention, the multimedia podium includes a podium body arranged on a lifting platform, and a water cup placement area is arranged on the outer side surface of the podium body near the bottom;

[0011] An equipment cavity is arranged on the side of the adjustment cavity inside the main body of the platform, a storage cavity is arranged on the side of the equipment cavity away from the adjustment cavity, an auxiliary support groove is arranged on the outer side of the storage cavity away from the equipment cavity, the auxiliary support groove runs through the side wall of the storage cavity, a first auxiliary support rod is hinged on the inner wall of the storage cavity, a second auxiliary support rod is arranged inside the first auxiliary support rod, and the first auxiliary support rod and the second auxiliary support rod have fixing ability (when the first auxiliary support rod and the second auxiliary support rod are extended to the limit, they will be self-locked if subjected to a downward component force, and can only be retracted when subjected to a horizontal component force);

[0012] Two slide grooves are arranged near the upper part of the inner walls on both sides of the podium body, and a slidingly connected expansion plate is arranged between the slide grooves. The expansion plate and the second auxiliary support rod are hinged. A pulley assembly and a pulley assembly spring are arranged near the slide groove on the expansion plate. A support ring is arranged at the end of the spring, and a pulley is rotatably connected to the support ring.

[0013] As a further description of the scheme of the present invention, a USB interface is provided near the upper end of the podium main body, a prompt light is provided above the USB interface, the prompt light can emit red and green light, a laser pen is provided on the side of the USB interface, the laser pen is a pluggable structure, a button is provided on the laser pen, and a laser emitter and two symmetrically distributed charging ports are provided at the end of the laser pen.

[0014] As a further description of the solution of the present invention, an auxiliary positioning groove is provided at the inner side of the slide groove, and an inclined surface is provided at the position of the auxiliary positioning groove close to the inside of the platform body.

[0015] As a further description of the solution of the present invention, the diameter of the support ring is greater than the width of the auxiliary positioning groove.

[0016] As a further description of the scheme of the present invention, the screen adjustment mechanism includes a control center arranged on the desktop of the main body of the podium, a movable screen is arranged on the control center, a control button is arranged on the control center, an angle adjustment base is arranged below the control center, the angle adjustment base is fixed on the inner wall of the adjustment cavity, a control plate is arranged above the angle adjustment base, the control plate is L-shaped, an arc-shaped slide groove is opened on the side of the control plate, a sliding groove is arranged on the control plate, a lead screw nut pair is arranged on the sliding groove, a gear is fixedly connected to the end of the lead screw of the lead screw nut pair, a rotating plate is hinged on the control plate, a sliding rod matching the arc-shaped slide groove is arranged on the side of the rotating plate, an auxiliary slide groove is arranged on the side of the angle adjustment base, the auxiliary slide groove is fixedly connected to the main body of the podium, a rack connected by sliding connection is arranged in the auxiliary slide groove, the rack and the gear are meshed, and the rack passes through the main body of the podium and the through hole and is connected to the fixed part of the lifting assembly. When adjusting the height, the rack does not move, and the gear moves up and down, thereby driving the gear lead screw pair to transmit, so as to achieve the adjustment of the height and angle of the movable screen.

[0017] As a further description of the solution of the present invention, a support rod is hinged on the nut of the screw nut pair, and the support rod is hinged to the bottom of the rotating plate.

[0018] As a further description of the scheme of the present invention, the end of the sliding rod is connected to a connecting rod through a fine-tuning motor, and the end of the connecting rod away from the rotating plate is connected to a connecting plate through a fine-tuning motor, and the connecting plate is connected to the movable screen on the control center.

[0019] The control method of the multimedia podium is as follows:

[0020] S1. The teacher adjusts the height of the podium through the control button;

[0021] S2. After the height adjustment is completed, fine-tune the height and inclination of the active screen according to personal preference;

[0022] S3. Pull out the expansion board as needed;

[0023] S4, take out the laser pen and start teaching;

[0024] S5. During the teaching process, the inclination of the active screen can be fine-tuned by pressing the button on the laser pen;

[0025] S6. After the teaching is completed, reset the laser pen, unplug the USB flash drive, and reset the expansion board.

[0026] Beneficial effects of the present invention:

[0027] 1. When the expansion board designed by the present invention is in use, it is supported by two auxiliary support rods and a support ring of the pulley assembly, thereby preventing the pulley from deforming when the expansion board carries heavy objects, thereby preventing the expansion board from being damaged.

[0028] 2. The lifting mechanism and screen adjustment mechanism designed in the present invention are linked. When adjusting the height of the podium, the screen can be initially adjusted to a suitable height (the screen is about 20° below the eye level) according to the BIFMA G1 standard. Then the teacher can control two fine-tuning motors to fine-tune the height and inclination of the screen, thereby shortening the preliminary preparation time.

[0029] 3. After the laser pen designed by the present invention is reset, the multimedia podium detects whether there is a storage device in the USB interface that has not been removed, and reminds the teacher with an indicator light, thereby avoiding the situation where the teacher forgets to remove the storage device after the lecture, resulting in the loss of the storage device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 It is a schematic diagram of the structure of the present invention;

[0032] Figure 2 It is a structural diagram of the lifting mechanism;

[0033] Figure 3 It is a structural diagram of the multimedia podium;

[0034] Figure 4 It is an enlarged structural diagram of a part A of the multimedia podium;

[0035] Figure 5 It is a schematic diagram of the structure of a laser pointer;

[0036] Figure 6 It is a schematic diagram of the internal structure of the multimedia podium;

[0037] Figure 7 It is a schematic diagram of the cross-sectional structure of the multimedia podium;

[0038] Figure 8 It is a partial cross-sectional schematic diagram of the position of the auxiliary positioning groove of the slideway;

[0039] Fig. 9 is a schematic diagram of the structure of the pulley assembly;

[0040] Fig.10 It is a schematic diagram of the interior of the regulating cavity;

[0041] Fig.11 It is a schematic diagram of the enlarged structure of the internal B position of the adjustment cavity;

[0042] Fig.12It is a schematic diagram of the main structure of the screen adjustment mechanism 3.

[0043] Description of the numbers in the figure:

[0044] 1. Lifting mechanism; 11. Lifting base; 111. Lifting assembly; 12. Moving assembly; 13. Auxiliary support sleeve; 14. Lifting platform; 141. Through hole; 2. Multimedia podium; 21. Podium body; 211. Cup placement; 212. Auxiliary support groove; 213. Adjustment cavity; 214. Equipment cavity; 215. Storage cavity; 216. Slide groove; 2161. Auxiliary positioning groove; 2162. Inclined surface; 217. Laser pen; 2171. Button; 2172. Charging port;

[0045] 2173, laser transmitter; 218, USB interface; 219, indicator light; 22, first auxiliary support rod; 23, second auxiliary support rod; 24, expansion board; 25, pulley assembly;

[0046] 251, spring; 252, support ring; 3, screen adjustment mechanism; 31, adjustment center; 311, adjustment button; 32, angle adjustment base; 33, adjustment plate; 331, arc-shaped slide groove 331;

[0047] 34. Connecting rod; 341. Fine-tuning motor; 35. Connecting plate; 36. Rotating plate; 37. Sliding groove; 371. Screw nut pair; 38. Gear; 39. Auxiliary sliding groove; 391. Rack. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0050] A self-adjustable teaching multimedia podium and control method, comprising a lifting mechanism 1 for adjusting the podium height; a multimedia podium 2 is arranged above the lifting mechanism 1, and an anti-damage expansion board 24 is arranged; a screen adjustment mechanism 3 is arranged on the multimedia podium 2, and the screen adjustment mechanism 3 and the lifting mechanism 1 are linked to preliminarily adjust the screen height and angle, and the teacher can further fine-tune the screen height and angle through the control button. The computer host, wiring connection, data interaction, amplification and other functions of the invention are not the innovative points of the present invention and are not reflected in the figure.

[0051] like Figure 1 , 2 As shown, the lifting mechanism 1 is equipped with a lifting base 11, and a detachable moving component 12 is arranged under the lifting base 11. According to actual needs, the device can be set as a movable podium, or the lifting base 11 can be removed and the device can be fixed on the ground and set as a fixed podium. An auxiliary support sleeve 13 is arranged on the lifting base 11. The auxiliary support sleeve 13 has auxiliary support and retractable functions similar to a corrugated tube. A lifting platform 14 is arranged on the upper surface of the auxiliary support sleeve 13, and a through hole 141 is opened on the lifting platform 14. A lifting component 111 is arranged inside the lifting base 11, and the moving end of the lifting component 111 is connected to the lifting platform 14, and the lifting component 111 can realize the lifting function of the podium.

[0052] like Figure 1 , 3 As shown in Figures 4 and 5, the multimedia podium 2 includes a podium body 21 arranged on the lifting platform 14. A water cup placement area is arranged on the outer side surface near the bottom of the podium body 21, where water cups can be placed, so that teachers can drink water during lectures. A USB interface 218 is arranged near the upper end of the podium body 21, and a prompt light 219 is arranged above the USB interface 218. The prompt light can emit red and green lights. A laser pen 217 is arranged on the side of the USB interface. The laser pen 217 is a pluggable structure. A button 2171 is arranged on the laser pen 217. A laser emitter 2173 and two symmetrically distributed charging ports 2172 are arranged at the end of the laser pen 217. When the teacher uses the multimedia podium, the laser pen 217 can be pulled out for lectures. After class, if the laser pen 217 is not reset, the multimedia podium cannot be closed. When the laser pen 217 is reset, if the U disk is not pulled out, the prompt light will turn red to remind the teacher to take the U disk away to prevent the U disk from being lost.

[0053] like Figure 3 , 6As shown in Figures 7, 8, and 9, an adjustment chamber 213 is provided inside the main body 21 of the podium for placing the main device of the screen adjustment mechanism. A device chamber 214 is provided on the side of the adjustment chamber 213. A computer host, line switching equipment, etc. are placed inside the device chamber 214. Since these devices and wiring methods are not the innovation of the present invention, they are not shown in the figure. A storage chamber 215 is provided on the side of the device chamber 214 away from the adjustment chamber 213. An auxiliary support groove 212 is provided on the outer side of the storage chamber 215 away from the device chamber 214. The auxiliary support groove 212 runs through the side wall of the storage chamber 215. A first auxiliary support rod 22 is hinged on the inner wall of the storage chamber 215. A second auxiliary support rod 23 is provided inside the first auxiliary support rod 22. The first auxiliary support rod 22 and the second auxiliary support rod 23 have fixing capabilities at the ends. When the second auxiliary support rod 23 is subjected to horizontal force, it can be recovered. If it is subjected to a large vertical downward component force, it will self-lock. This type of structure is a common structure, so it is not shown in detail in the figure.

[0054] Two slide grooves 216 are arranged near the upper part of the inner wall of both sides of the podium body 21, and auxiliary positioning grooves 2161 are arranged inside the slide grooves 261. The auxiliary positioning grooves 2161 are arranged near the inside of the podium body 21 with inclined surfaces 2162. A slidingly connected expansion plate 24 is arranged between the slide grooves 216, and the expansion plate 24 is hinged to the second auxiliary support rod 23, such as Figure 7 As shown, the extension plate 24 is provided with a pulley assembly 25 near the slide slot 216. Fig. 9 As shown, the pulley assembly 25 has a spring 251, and a support ring 252 is provided at the end of the spring 251. The diameter of the support ring 252 is greater than the width of the auxiliary positioning groove 2161. A pulley is rotatably connected to the support ring. When the pulley moves outward to the auxiliary positioning groove 2161 along with the expansion plate 24, the pulley is stuck in the auxiliary positioning groove 2161. At this time, the support ring 252 is attached to the inner side of the auxiliary positioning groove 2161 under the action of the spring 251 to assist in fixing the expansion plate 24. After the expansion plate 24 is retracted, there is a certain gap between it and the inner wall of the storage cavity 215.

[0055] like Figure 1 , 10As shown in Figures 11 and 12, the screen adjustment mechanism 3 includes a control center 31 arranged on the desktop of the podium body 21, and an active screen is arranged on the control center 31. The control center 31 is provided with a control button 311. The control button 311 can control the lifting mechanism 1 to adjust the height of the podium according to its own situation, and at the same time, the screen adjustment mechanism 3 can be controlled to fine-tune the height and tilt angle of the screen. An angle adjustment base 32 is arranged below the adjustment center 31, and the angle adjustment base 32 is fixed on the inner wall of the adjustment cavity 213. An adjustment plate 33 is arranged above the angle adjustment base 32. The adjustment plate 33 is L-shaped, and an arc-shaped slide groove 331 is opened on the side of the adjustment plate 33. A sliding groove 37 is arranged on the adjustment plate 33, and a lead screw nut pair 371 is arranged on the sliding groove 37. The end of the lead screw of the lead screw nut pair 371 is fixedly connected with a gear 38, and a support rod 372 is hinged on the nut of the lead screw nut pair 371. The support rod 372 is hinged to the bottom of the rotating plate 36, and a rotating plate 36 is hinged on the adjustment plate 33. A sliding rod that cooperates with the arc-shaped slide groove 331 is arranged on the side of the rotating plate 36. The end of the sliding rod is connected to a connecting rod 34 through a fine-tuning motor 341, and the end of the connecting rod 34 away from the rotating plate 36 is connected to a connecting plate 35 through the fine-tuning motor 341. The connecting plate 35 is connected to the movable screen on the adjustment center 31. An auxiliary slide 39 is provided on the side of the angle control base 32. The auxiliary slide 39 is fixedly connected to the main body 21 of the platform. A rack 391 is provided in the auxiliary slide 39. The rack 391 is meshed with the gear 38. The rack 391 passes through the main body 21 of the platform and is connected with the fixed part of the through hole 141 and the lifting assembly 111. When the lifting assembly 111 is lifted or lowered, the rack 391 is fixed, and the gear 38 is rotated by moving up and down. The rotating plate 36 is driven to rotate by the lead screw nut pair 371, thereby moving the connecting rod 34 and the connecting plate 35, and finally driving the movable screen to achieve preliminary adjustment of the height and angle. After the preliminary adjustment is completed, the teacher can drive the two fine-tuning motors 341 through the control button 311 to achieve fine-tuning of the movable screen. The gap reserved between the expansion plate 24 and the inner wall of the storage cavity 215 after the expansion plate 24 is folded up avoids blocking the connection between the connecting rod 34 and the movable screen.

[0056] The specific steps for using the self-adjustable teaching multimedia podium are as follows:

[0057] S1. The teacher adjusts the height of the podium through the control button 311;

[0058] S2. After the height adjustment is completed, fine-tune the height and inclination of the active screen according to personal preference;

[0059] S3, pull open the expansion board 24 according to the needs;

[0060] S4, take out the laser pen 217 and start teaching;

[0061] S5. During the teaching process, the inclination angle of the active screen can be fine-tuned by using the button 2171 on the laser pen 217;

[0062] S6. After the teaching is completed, the laser pen 217 is reset, the USB flash drive is pulled out, and the expansion board 24 is reset.

[0063] The specific usage of the adaptively adjusted teaching multimedia podium is as follows:

[0064] During installation, the mobile assembly 12 can be increased or decreased according to actual needs. If the podium needs to be fixed, the mobile assembly 12 can be removed and the threaded hole where the mobile assembly was originally installed can be bolted through to fix the podium to the ground. When in use, the teacher first controls the lifting mechanism 1 through the control center 31 to adjust the podium to a suitable height according to his or her own height. The adaptive podium is designed according to the BIFMA G1 standard, and the transmission ratio of the rack and gear is reasonably designed. During the height adjustment process, the gear 38 and the rack 391 are driven to adaptively adjust the active screen to a suitable position (the screen is at an angle of 20° below the eye level). When the height adjustment is completed, the teacher can drive the fine-tuning motor 341 through the control button 311 on the control center 31 to further fine-tune the height and angle of the active screen. When the original podium area is not enough, the extension plate 24 can be pulled out so that the pulley assembly 25 is stuck in the auxiliary positioning groove 2161. If there are heavier teaching aids or when teachers and students communicate during class breaks, when students lean on the extension plate 24, the extension plate 24 is supported by two auxiliary support rods and the support ring 252 to prevent the pulley of the pulley assembly from being subjected to excessive force and causing minor damage, resulting in unsmooth sliding.

[0065] When in use, the expansion board 24 of the adaptive podium design is supported by two auxiliary support rods and the support ring 252 of the pulley assembly, thereby preventing the pulley from deforming and damaging the expansion board 24 when the expansion board 24 carries heavy objects.

[0066] The lifting mechanism 1 and the screen adjustment mechanism 3 designed in the adaptive podium device are linked. When adjusting the height of the podium, the screen can be initially adjusted to an appropriate height (the screen is around 20° below the eye level) according to the BIFMA G1 standard. Then the teacher can control two fine-tuning motors 341 to fine-tune the height and inclination of the screen, thereby shortening the initial adjustment time.

[0067] The laser pen designed for the adaptive podium will detect whether there is a storage device that has not been removed from the USB interface after resetting, and remind the teacher with an indicator light, thus avoiding the situation where the teacher forgets to remove the storage device after the lecture, resulting in the loss of the storage device.

[0068] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0069] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A self-adjustable teaching multimedia podium, comprising a lifting mechanism (1), a multimedia podium (2) being arranged above the lifting mechanism (1), and a screen adjustment mechanism (3) being arranged on the multimedia podium (2); The lifting mechanism (1) comprises a lifting component (111) and a lifting platform (14) for adjusting the height of the podium; The multimedia podium (2) comprises a podium body (21), an adjustment cavity (213) is provided inside the podium body (21), and an anti-damage expansion plate (24) is provided inside the podium body (21); The screen adjustment mechanism (3) and the lifting mechanism (1) are linked to preliminarily adjust the height and angle of the movable screen, and the screen adjustment mechanism (3) finely adjusts the height and angle of the movable screen; The screen adjustment mechanism (3) comprises a control center (31) arranged on the desktop of the podium body (21), a movable screen is arranged on the control center (31), a control button (311) is arranged on the control center (31), an angle adjustment base (32) is arranged below the control center (31), the angle adjustment base (32) is fixed to the inner wall of the adjustment cavity (213), a control plate (33) is arranged above the angle adjustment base (32), the control plate (33) is L-shaped, an arc-shaped slide groove (331) is opened on the side of the control plate (33), a slide groove (37) is arranged on the control plate (33), and a lead screw is arranged on the slide groove (37). A nut pair (371), a gear (38) is fixedly connected to the end of the lead screw of the lead screw nut pair (371), a rotating plate (36) is hinged on the regulating plate (33), a sliding rod cooperating with the arc-shaped sliding groove (331) is arranged on the side of the rotating plate (36), an auxiliary sliding groove (39) is arranged on the side of the angle regulating base (32), the auxiliary sliding groove (39) is fixedly connected to the podium body (21), a slidably connected rack (391) is arranged in the auxiliary sliding groove (39), the rack (391) is meshed with the gear (38), and the rack (391) passes through the podium body (21) and the through hole (141) and is connected to the fixed part of the lifting component (111); A support rod (372) is hinged on the nut of the lead screw nut pair (371), and the support rod (372) is hinged to the bottom of the rotating plate (36); The end of the sliding rod is connected to a connecting rod (34) via a fine-tuning motor (341); one end of the connecting rod (34) away from the rotating plate (36) is connected to a connecting plate (35) via the fine-tuning motor (341); and the connecting plate (35) is connected to a movable screen on the control center (31).

2. The self-adaptive teaching multimedia platform according to claim 1, characterized in that: The lifting mechanism (1) comprises a lifting base (11), a detachable moving component (12) is arranged below the lifting base (11), an auxiliary support sleeve (13) is arranged on the lifting base (11), the auxiliary support sleeve (13) has the functions of auxiliary support and telescopic, a lifting platform (14) is arranged on the upper surface of the auxiliary support sleeve (13), a through hole (141) is opened on the lifting platform (14), a lifting component (111) is arranged inside the lifting base (11), and a moving end of the lifting component (111) is connected to the lifting platform.

3. The self-adaptive teaching multimedia platform according to claim 1, characterized in that: The multimedia podium (2) comprises a podium body (21) arranged on a lifting platform (14), and a cup placement area is arranged on the outer side surface of the podium body (21) near the bottom; An equipment chamber (214) is arranged on the side of the adjustment chamber (213) inside the podium body (21), a storage chamber (215) is arranged on the side of the equipment chamber (214) away from the adjustment chamber (213), an auxiliary support groove (212) is arranged on the outer side of the storage chamber (215) away from the equipment chamber (214), the auxiliary support groove (212) penetrates the side wall of the storage chamber (215), a first auxiliary support rod (22) is hingedly connected to the inner wall of the storage chamber (215), a second auxiliary support rod (23) is arranged inside the first auxiliary support rod (22), and the first auxiliary support rod (22) and the second auxiliary support rod (23) have fixing capabilities; Two slide grooves (216) are provided on the inner walls of both sides of the podium body (21) near the upper part, and a slidingly connected expansion plate (24) is provided between the slide grooves (216). The expansion plate (24) is hinged to the second auxiliary support rod (23), and a pulley assembly (25) is provided on the expansion plate (24) near the slide groove (216). The pulley assembly (25) has a spring (251), and a support ring (252) is provided at the end of the spring (251), and a pulley is rotatably connected to the support ring.

4. The self-adaptive teaching multimedia platform according to claim 3, characterized in that: A USB interface (218) is provided near the upper end of the podium body (21), a warning light (219) is provided above the USB interface (218), the warning light can emit red and green light, a laser pen (217) is provided on the side of the USB interface, the laser pen (217) is a pluggable structure, a button (2171) is provided on the laser pen (217), and a laser emitter (2173) and two symmetrically distributed charging ports (2172) are provided at the end of the laser pen (217).

5. The self-adaptive teaching multimedia platform according to claim 3, characterized in that: An auxiliary positioning groove (2161) is provided at the inner side of the slide groove (216), and an inclined surface (2162) is provided at a position of the auxiliary positioning groove (2161) close to the inside of the podium body (21).

6. The self-adaptive teaching multimedia platform according to claim 5, characterized in that: The diameter of the support ring (252) is greater than the width of the auxiliary positioning groove (2161).

7. A control method for an adaptively adjustable teaching multimedia podium according to any one of claims 1 to 6, characterized in that: The control method of the multimedia podium is as follows: S1. The teacher adjusts the height of the podium through the control button (311); S2. After the height adjustment is completed, fine-tune the height and inclination of the active screen according to personal preference; S3, pull open the expansion board (24) as needed; S4, take out the laser pen (217) and start teaching; S5, during the teaching process, the inclination angle of the active screen can be fine-tuned by using the button (2171) on the laser pen (217); S6. After the teaching is completed, the laser pen (217) is reset, the USB flash drive is removed, and the expansion board (24) is reset.

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