Multimedia display stand

Abstract

The invention discloses a multimedia display stand, which relates to the technical field of multimedia display and comprises a base, and the top end of the base is rotatably connected with a multimedia display screen. The servo motor is started to drive the fixed shaft to rotate, so that the multimedia display screen rotates into the storage groove, the multimedia display screen can be effectively prevented from being possibly influenced by external force such as collision and extrusion in the moving process, and therefore the risk that the multimedia display screen is damaged is reduced, and the service life of the multimedia display screen is prolonged. Dust and dirt on the surface of the multimedia display screen can be effectively removed by cleaning the surface of the multimedia display screen through the wiping piece, the cleanliness of the surface of equipment can be kept, the multimedia display screen can present more distinct and vivid images, it is ensured that the content displayed by the multimedia display screen is clearer, and therefore the overall display effect is improved, and the display effect is improved. And meanwhile, the surface of the multimedia display screen is shielded through the protection plate, so that the surface of the screen can be better prevented from being scratched or broken, and the display effect and the service life are further prevented from being influenced.

Description

Technical Field

[0001] The invention relates to the technical field of multimedia display, in particular to a multimedia display stand. Background Art

[0002] Multimedia technology refers to the technology that uses computers to comprehensively process and manage various media information such as text, data, graphics, images, animations, and sounds, so that users can interact with computers in real time through multiple senses. Multimedia display stands are often used in some large companies, buildings, governments, or administrative units.

[0003] The existing patent (Announcement No.: CN 109003562 A) discloses an information technology multimedia display stand, which receives wireless network information from a background database through an internal wireless network transceiver, and uses a loudspeaker to broadcast notifications in the hall. With the multimedia display screen, building staff can quickly learn more about employees in the building. The bottom of the base cabinet is connected by a lifting cylinder, and the height of the multimedia display screen can be quickly and easily adjusted like a lifting chair. At the same time, the lifting cylinder and the support column are connected by a rotating rod, and the display direction of the multimedia display screen can be adjusted at any time. Four self-locking universal wheels are set at the bottom of the base plate, which can facilitate the movement of the multimedia display stand.

[0004] However, the above technical solution still has certain defects. The device cannot be well stored when the multimedia display stand is moved, which may cause the multimedia display stand to be hit and the display screen to be damaged. At the same time, when the multimedia display stand is displayed for a long time, dust and dirt are easily adhered to the surface of the display screen, resulting in blurred content displayed on the display screen, which affects the display effect of the multimedia display stand to a certain extent. Therefore, a multimedia display stand is proposed. Summary of the invention

[0005] Based on this, the object of the present invention is to provide a multimedia display stand to solve the technical problems raised in the above background.

[0006] To achieve the above object, the present invention provides the following technical solution: a multimedia display stand, comprising a base, the top of the base is rotatably connected to a multimedia display screen, the bottom of the multimedia display screen is rotatably connected to a storage component, the inside of the base is slidably connected to a wiping protection component for protecting the surface of the multimedia display screen, and the bottom of the base is provided with a moving component for carrying the multimedia display screen;

[0007] The storage assembly includes a servo motor fixedly connected to the inside of the base, a fixed shaft is welded to the output end of the servo motor, a spring a is fixedly connected to the inside of the fixed shaft, a movable shaft slidably connected to the inner wall of the fixed shaft is provided on the side of the spring a away from the servo motor, a rotating rod is slidably connected to the side of the movable shaft away from the fixed shaft, a rotating block is fixedly connected to the surface of the rotating rod, and the rotating block is fixedly connected to the multimedia display screen, the wiping protection assembly includes an extrusion groove opened at the top of the base, an extrusion plate is slidably connected to the extrusion groove, a ring is fixedly connected to the surface of the movable shaft, and the inside of the ring A circular groove is provided, in which a moving rod is slidably connected, an inclined block a is welded to the end of the moving rod away from the circular ring, a matching inclined block b is provided on one side of the inclined block a, a tensioning shaft is welded to the side of the inclined block b away from the inclined block a, a belt is slidably connected to the surface of the tensioning shaft, a connecting roller is rotatably provided on one side of the inner wall of the belt, a base rod is welded to one side of the connecting roller, a sprocket a is fixedly connected to the surface of the base rod, a chain is rotatably connected to the surface of the sprocket a, an L-shaped fixing plate is welded to one side of the chain, a protective plate is welded to the end of the L-shaped fixing plate away from the chain, and a wiping piece is installed at one end of the protective plate.

[0008] As a preferred technical solution of a multimedia display stand of the present invention, a storage groove matching the multimedia display screen is opened at the top of the base, and a push rod is welded at one end of the top of the base away from the multimedia display screen, and a spring telescopic rod is fixedly connected inside the movable shaft.

[0009] As a preferred technical solution of a multimedia display stand of the present invention, the end of the spring telescopic rod movable rod is fixedly connected with an inclined surface block, the inclined surface block is slidably connected to the movable shaft, and a groove matching the inclined surface block is opened inside the rotating rod.

[0010] As a preferred technical solution of a multimedia display stand of the present invention, springs b are fixedly connected on both sides of the bottom end of the extrusion plate, a curved pipe is connected to the bottom end of the extrusion groove, an end of the curved pipe away from the extrusion groove is fixedly connected to a bellows, an end of the bellows away from the curved pipe is fixed to an L-shaped connecting pipe, a telescopic push rod is slidably connected inside the L-shaped connecting pipe, and the side of the telescopic push rod away from the L-shaped connecting pipe is in contact with a circular ring.

[0011] As a preferred technical solution of a multimedia display stand of the present invention, a slider is fixedly connected to the surface of the L-shaped connecting tube, a square block is slidably connected to the surface of the slider, a round shaft is slidably connected to one side of the square block, the round shaft is fixedly connected to the slider, and a sliding groove matching the slider is opened inside the square block.

[0012] As a preferred technical solution of a multimedia display stand of the present invention, a ventilation groove is opened inside the base, the round shaft is slidably connected to the ventilation groove, a piston rod is slidably connected to the side of the ventilation groove away from the round shaft, a spring c is provided on one side of the piston rod, and the end of the piston rod away from the spring c is in contact with the protective plate.

[0013] As an optimal technical solution for a multimedia display stand of the present invention, a horizontal plate is fixedly connected to the top of the tensioning shaft, three groups of springs d are fixedly connected to the top of the horizontal plate, the tops of the three groups of springs d are fixedly connected to the base, and the end of the inner wall of the belt away from the connecting roller is rotatably connected to the fixed shaft.

[0014] As a preferred technical solution of a multimedia display stand of the present invention, the chain is provided with two groups, and the ends of the inner walls of the two groups of chains away from the sprocket a are rotatably connected to the sprocket b, and a connecting shaft is fixed between the two groups of sprockets b.

[0015] As a preferred technical solution of a multimedia display stand of the present invention, the moving assembly includes a vertical plate fixedly connected to the bottom end of the L-shaped fixed plate, a rack is fixedly connected to one side of the vertical plate, and a meshing gear is provided on one side of the rack.

[0016] As an optimal technical solution for a multimedia display stand of the present invention, a threaded screw is fixedly connected to the center of the gear, a support plate is rotatably connected to the surface of the threaded screw, the support plate is slidably connected to the lower end of the base, and moving wheels are fixedly connected to the four corners of the bottom end of the support plate.

[0017] In summary, the present invention mainly has the following beneficial effects:

[0018] The present invention starts a servo motor to drive the fixed shaft to rotate, so that the multimedia display screen rotates to the inside of the storage slot, which can effectively prevent the multimedia display screen from being affected by external forces such as collision and extrusion during movement, thereby reducing the risk of damage to the multimedia display screen. At the same time, the multimedia display screen can occupy less space when not in use, saving more space for other equipment or personnel, and better enhancing the applicability of the equipment. Cleaning the surface of the multimedia display screen with a wiping piece can effectively remove dust and dirt on the screen surface, and the cleanliness of the device surface can be maintained, so that the multimedia display screen presents a more vivid and lively image, ensuring that the content displayed on the multimedia display screen is clearer, thereby improving the overall display effect. At the same time, shielding the surface of the multimedia display screen with a protective plate can better prevent the screen surface from being scratched or cracked, thereby affecting the display effect and service life.

[0019] The present invention drives the vertical plate to move synchronously with the movement of the protective plate, so that the threaded screw drives the support plate to move and descend from the inside of the base, and the support plate drives four sets of moving wheels to descend synchronously, so that the moving wheels are supported on the ground, which is convenient for staff to better move the multimedia display screen from one place to another, and can quickly adapt to different site layouts and audience needs, thereby improving the utilization rate and applicability of the equipment. At the same time, the multimedia display screen can be more conveniently moved to the designated area during maintenance and inspection, thereby improving maintenance efficiency and reducing the impact on the on-site environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the overall components of the present invention;

[0021] Figure 2 It is a three-dimensional schematic diagram of the overall assembly storage of the present invention;

[0022] Figure 3 It is a three-dimensional schematic diagram of the interior of the base of the present invention;

[0023] Figure 4 It is a three-dimensional schematic diagram of the tensioning shaft of the present invention;

[0024] Figure 5 It is a three-dimensional schematic diagram of the interior of the movable shaft of the present invention;

[0025] Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle;

[0026] Figure 7 It is a three-dimensional schematic diagram of the ventilation groove of the present invention;

[0027] Figure 8 It is a three-dimensional schematic diagram of the interior of a square block of the present invention;

[0028] Fig. 9 For the present invention Figure 8 Enlarged view of point B in the middle;

[0029] Fig.10 It is a three-dimensional schematic diagram of the moving component of the present invention.

[0030] In the figure: 100, base; 110, multimedia display screen; 111, storage slot; 120, push rod;

[0031] 200, storage assembly; 210, servo motor; 220, fixed shaft; 230, spring a; 240, movable shaft; 250, rotating rod; 251, rotating block; 260, spring telescopic rod; 270, inclined block; 271, slot;

[0032] 300, wipe protection assembly; 310, extrusion plate; 311, extrusion groove; 320, elbow; 330, spring b; 340, bellows; 350, L-shaped connecting pipe; 360, telescopic push rod; 370, slider; 371, slide groove; 380, square block; 390, round shaft; 391, ventilation groove; 3910, piston rod; 3920, spring c; 3930, ring; 3931, round groove; 3 940, moving rod; 3950, inclined block a; 3960, inclined block b; 3970, tensioning shaft; 3971, belt; 3980, cross plate; 3990, spring d; 3991, connecting roller; 3992, base rod; 3993, sprocket a; 3994, chain; 3995, sprocket b; 3996, connecting shaft; 3997, L-shaped fixing plate; 3998, protective plate; 3999, wiper.

[0033] 400, moving assembly; 410, vertical plate; 420, rack; 430, gear; 440, threaded screw; 450, support plate; 460, moving wheel. DETAILED DESCRIPTION

[0034] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] The following describes an embodiment of the present invention based on its overall structure.

[0036] A multimedia display stand, such as Figure 1-10 As shown, it includes a base 100, the top of the base 100 is rotatably connected to a multimedia display screen 110, the bottom of the multimedia display screen 110 is rotatably connected to a storage assembly 200, the inside of the base 100 is slidably connected to a wiping protection assembly 300 for protecting the surface of the multimedia display screen 110, and the bottom of the base 100 is provided with a moving assembly 400 for carrying the multimedia display screen 110;

[0037] The storage assembly 200 includes a servo motor 210 fixedly connected to the inside of the base 100, a fixed shaft 220 is welded to the output end of the servo motor 210, a spring a230 is fixedly connected to the inside of the fixed shaft 220, a movable shaft 240 slidably connected to the inner wall of the fixed shaft 220 is provided on the side of the spring a230 away from the servo motor 210, a rotating rod 250 is slidably connected to the side of the movable shaft 240 away from the fixed shaft 220, a rotating block 251 is fixedly connected to the surface of the rotating rod 250, and the rotating block 251 is fixedly connected to the multimedia display screen 110, and the wiping protection assembly 300 includes a swiping protection assembly 300 provided on the base 1 00, the extrusion groove 311 at the top, the extrusion groove 311 is slidably connected with the extrusion plate 310, the surface of the movable shaft 240 is fixedly connected with a ring 3930, the inside of the ring 3930 is provided with a circular groove 3931, the circular groove 3931 is slidably connected with a moving rod 3940, the end of the moving rod 3940 away from the ring 3930 is welded with an inclined block a3950, a matching inclined block b3960 is provided on one side of the inclined block a3950, a tensioning shaft 3970 is welded on the side of the inclined block b3960 away from the inclined block a3950, the surface of the tensioning shaft 3970 is slidably connected with a belt 3971, the inner wall of the belt 3971 A connecting roller 3991 is rotatable on one side, a base rod 3992 is welded on one side of the connecting roller 3991, a sprocket a3993 is fixedly connected to the surface of the base rod 3992, a chain 3994 is rotatably connected to the surface of the sprocket a3993, an L-shaped fixing plate 3997 is welded on one side of the chain 3994, a protective plate 3998 is welded on the end of the L-shaped fixing plate 3997 away from the chain 3994, a wiper 3999 is installed on one end of the protective plate 3998, springs b330 are fixedly connected to both sides of the bottom end of the extrusion plate 310, a bent pipe 320 is connected to the bottom end of the extrusion groove 311, and the bent pipe 320 is away from the extrusion groove 311 One end of the bellows 340 is fixedly connected, and the end of the bellows 340 away from the bent pipe 320 is fixed with an L-shaped connecting pipe 350, and a telescopic push rod 360 is slidably connected inside the L-shaped connecting pipe 350, and the side of the telescopic push rod 360 away from the L-shaped connecting pipe 350 abuts against the circular ring 3930, and a slider 370 is fixedly connected to the surface of the L-shaped connecting pipe 350, and a square block 380 is slidably connected to the surface of the slider 370, and a round shaft 390 is slidably connected to one side of the square block 380, and the round shaft 390 is fixedly connected to the slider 370, and a sliding groove 371 matching the slider 370 is provided inside the square block 380.

[0038] When the multimedia display screen 110 needs to be transported and moved, the servo motor 210 is started to drive the fixed shaft 220 to rotate, and the fixed shaft 220 drives the movable shaft 240 to rotate synchronously, so that the movable shaft 240 drives the rotating rod 250 to rotate synchronously under the cooperation of the inclined block 270 and the card slot 271, and the rotating rod 250 drives the multimedia display screen 110 to rotate into the storage slot 111 through the rotating block 251, which can effectively prevent the multimedia display screen 110 from being affected by external forces such as collision and extrusion during movement, thereby reducing the risk of damage to the multimedia display screen 110, and at the same time, the multimedia display screen 110 can occupy less space when not in use, saving more space for other equipment or personnel, and better enhancing Applicability of the device: When the multimedia display screen 110 rotates to the storage slot 111, the extrusion plate 310 is compressed, and the extrusion plate 310 compresses the spring b330 and allows the gas inside the extrusion slot 311 to enter the bellows 340 through the curved pipe 320, and then enter the L-shaped connecting pipe 350 through the bellows 340, so that the telescopic push rod 360 is forced to extend from the inside of the L-shaped connecting pipe 350, pushing the ring 3930 to move, so that the ring 3930 drives the movable shaft 240 to move synchronously and compress the spring a230, and the movable shaft 240 drives the inclined block 270 to disengage from the slot 271 when moving, thereby releasing the connection between the rotating rod 250 and the movable shaft 240, and the ring 3930 drives the moving rod 3940 to move when moving, so that the moving rod 3940 drives the inclined block 270 to disengage from the slot 271 ..., so that the moving rod 3940 drives the inclined block 270 to disengage from the slot 271, thereby releasing the connection between the rotating rod 250 and the movable shaft 240, and the ring 3930 drives the moving rod 3940 to move, so that the moving rod 3940 drives the inclined block 270 to disengage from the slot 271, thereby releasing the connection between the rotating Block a3950 moves synchronously, and the inclined block a3950 squeezes the inclined block b3960, so that the inclined block b3960 drives the tensioning shaft 3970 to move downward, and the tensioning shaft 3970 stretches the spring d3990 through the cross plate 3980. When the tensioning shaft 3970 moves, the belt 3971 will be tightened. At this time, the servo motor 210 is started, and the belt 3971 is driven to rotate through the rotation of the fixed shaft 220. The belt 3971 drives the connecting roller 3991 to rotate through the tensioning shaft 3970. The connecting roller 3991 drives the sprocket a3993 to rotate through the base rod 3992, and the sprocket a3993 drives the chain 3994 to rotate. The chain 3994 drives the sprocket b3995 to rotate, and at the same time, the protective plate 3998 is driven to move through the L-shaped fixed plate 3997. The protective plate 3998 drives the wiping member 3999 to move synchronously. The wiping member 3999 cleans the surface of the multimedia display screen 110 to effectively remove dust and dirt on the screen surface, maintain the cleanliness of the device surface, and make the multimedia display screen 110 present a more vivid and lively image, ensuring that the content displayed by the multimedia display screen 110 is clearer, thereby improving the overall display effect. At the same time, the protective plate 3998 shields the surface of the multimedia display screen 110 to better prevent the screen surface from being scratched or cracked, thereby affecting the display effect and service life. When moving to the specified position, the servo motor 210 is reversed to reset the protective plate 3998. When the protective plate 3998 is reset, it will squeeze the piston rod 3910.The piston rod 3910 compresses the spring c3920, and under the influence of air pressure, the gas inside the vent groove 391 pushes the round shaft 390 to move, and the round shaft 390 drives the slider 370 to move synchronously inside the slide groove 371, so that the slider 370 drives the L-shaped connecting pipe 350 and the telescopic push rod 360 to move, and the contact between the telescopic push rod 360 and the ring 3930 is released, so that the movable shaft 240 and the ring 3930 are inserted into the rotating rod 250 under the action of the spring a230, so that the multimedia display screen 110 can be better removed from the storage groove 111 for display.

[0039] Please refer to Figures 1 to 6 A storage groove 111 that matches the multimedia display screen 110 is provided at the top of the base 100, and a push rod 120 is welded to the end of the top of the base 100 away from the multimedia display screen 110. A spring telescopic rod 260 is fixedly connected inside the movable shaft 240, and a sloped block 270 is fixedly connected to the end of the movable rod of the spring telescopic rod 260. The sloped block 270 is slidably connected to the movable shaft 240, and a slot 271 that matches the sloped block 270 is provided inside the rotating rod 250.

[0040] The storage slot 111 is provided to facilitate the multimedia display screen 110 to be better embedded in the base 100 for storage. Through the cooperation between the inclined block 270 and the slot 271, the movable shaft 240 can drive the rotating rod 250 to rotate synchronously when rotating.

[0041] Please refer to Figures 7 to 9 A ventilation groove 391 is provided inside the base 100, and the circular shaft 390 is slidably connected to the ventilation groove 391. A piston rod 3910 is slidably connected to the side of the ventilation groove 391 away from the circular shaft 390. A spring c3920 is provided on one side of the piston rod 3910, and the end of the piston rod 3910 away from the spring c3920 abuts against the protective plate 3998. A cross plate 3980 is fixedly connected to the top of the tensioning shaft 3970, and three groups of springs d3990 are fixedly connected to the top of the cross plate 3980. The top of the three groups of springs d3990 are fixedly connected to the base 100. One end of the inner wall of the belt 3971 away from the connecting roller 3991 is rotatably connected to the fixed shaft 220. Two groups of chains 3994 are provided. One end of the inner wall of the two groups of chains 3994 away from the sprocket a3993 is rotatably connected to the sprocket b3995, and a connecting shaft 3996 is fixed between the two groups of sprockets b3995.

[0042] By setting the spring c3920, the protective plate 3998 can be reset when the piston rod 3910 is squeezed. By setting the cross plate 3980 and the spring d3990, the tensioning shaft 3970 can tighten the belt 3971 and reset the tensioning shaft 3970 better, which is convenient for subsequent continuous use.

[0043] Please refer to Figure 2 , Figure 3 and Fig.10 The moving component 400 includes a vertical plate 410 fixedly connected to the bottom end of the L-shaped fixed plate 3997, a rack 420 is fixedly connected to one side of the vertical plate 410, a meshing gear 430 is provided on one side of the rack 420, a threaded screw 440 is fixedly connected to the center of the gear 430, a support plate 450 is rotatably connected to the surface of the threaded screw 440, the support plate 450 is slidably connected to the lower end of the base 100, and moving wheels 460 are fixedly connected to the four corners of the bottom end of the support plate 450.

[0044] The chain 3994 drives the protection plate 3998 to move through the L-shaped fixing plate 3997, and also drives the vertical plate 410 to move synchronously, so that the vertical plate 410 drives the rack 420 to move, the rack 420 drives the gear 430 to rotate, and the gear 430 drives the threaded screw 440 to rotate synchronously, so that the threaded screw 440 drives the support plate 450 to move and descend from the inside of the base 100, and the support plate 450 drives four sets of moving wheels 460 to descend synchronously, so that the moving wheels 460 are supported on the ground, so that the staff can better move the multimedia display screen 110 from one place to another, and then can quickly adapt to different venue layouts and audience needs, thereby improving the utilization and applicability of the equipment. At the same time, the multimedia display screen 110 can be more conveniently moved to the designated area during maintenance and inspection, thereby improving maintenance efficiency and reducing the impact on the on-site environment.

[0045] When in use, the servo motor 210 is started to drive the fixed shaft 220 to rotate, so that the multimedia display screen 110 is rotated into the storage slot 111, which can effectively prevent the multimedia display screen 110 from being affected by external forces such as collision and extrusion during movement, thereby reducing the risk of damage to the multimedia display screen 110. The surface of the multimedia display screen 110 can be cleaned by the wiping member 3999 to effectively remove dust and dirt on the screen surface, which can maintain the cleanliness of the device surface, so that the multimedia display screen 110 presents a more vivid and lively image, ensuring that the content displayed by the multimedia display screen 110 is clearer, thereby improving the overall display effect. At the same time, the multimedia display screen 110 is cleaned by the protective plate 3998. The surface of the display screen 110 is shielded to better prevent the screen surface from being scratched or cracked, thereby affecting the display effect and service life. When the protective plate 3998 moves, it also drives the vertical plate 410 to move synchronously, so that the support plate 450 drives the four sets of moving wheels 460 to descend synchronously, so that the moving wheels 460 are supported on the ground for easy movement, and can quickly adapt to different venue layouts and audience needs, thereby improving the utilization rate and applicability of the equipment. At the same time, the multimedia display screen 110 can be more conveniently moved to the designated area during maintenance and inspection, thereby improving maintenance efficiency and reducing the impact on the on-site environment. The parts not involved in the device are the same as the prior art or can be implemented using the prior art.

[0046] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A multimedia display stand, comprising a base (100), characterized in that: The top end of the base (100) is rotatably connected to a multimedia display screen (110), the bottom end of the multimedia display screen (110) is rotatably connected to a storage assembly (200), the interior of the base (100) is slidably connected to a wiping protection assembly (300) for protecting the surface of the multimedia display screen (110), and the bottom end of the base (100) is provided with a moving assembly (400) for carrying the multimedia display screen (110); The storage assembly (200) comprises a servo motor (210) fixedly connected to the inside of the base (100), a fixed shaft (220) is welded to the output end of the servo motor (210), a spring a (230) is fixedly connected to the inside of the fixed shaft (220), a movable shaft (240) is provided on the side of the spring a (230) away from the servo motor (210) and is slidably connected to the inner wall of the fixed shaft (220), and a rotating rod (240) is slidably connected to the side of the movable shaft (240) away from the fixed shaft (220). 50), a rotating block (251) is fixedly connected to the surface of the rotating rod (250), and the rotating block (251) is fixedly connected to the multimedia display screen (110), the wiping protection component (300) includes an extrusion groove (311) opened at the top of the base (100), and the extrusion groove (311) is slidably connected to the extrusion plate (310), and a circular ring (3930) is fixedly connected to the surface of the movable shaft (240), and a circular groove (3931) is opened inside the circular ring (3930), and the circular groove (3931) is fixedly connected to the surface of the movable shaft (240). 931) is slidably connected to a moving rod (3940), an end of the moving rod (3940) away from the ring (3930) is welded with an inclined block a (3950), one side of the inclined block a (3950) is provided with a matching inclined block b (3960), a side of the inclined block b (3960) away from the inclined block a (3950) is welded with a tensioning shaft (3970), a belt (3971) is slidably connected to the surface of the tensioning shaft (3970), and a connecting roller (3971) is rotatably connected to one side of the inner wall of the belt (3971). 91), a base rod (3992) is welded to one side of the connecting roller (3991), a sprocket a (3993) is fixedly connected to the surface of the base rod (3992), a chain (3994) is rotatably connected to the surface of the sprocket a (3993), an L-shaped fixing plate (3997) is welded to one side of the chain (3994), a protective plate (3998) is welded to one end of the L-shaped fixing plate (3997) away from the chain (3994), and a wiping member (3999) is installed at one end of the protective plate (3998).

2. A multimedia display stand according to claim 1, characterized in that: The top of the base (100) is provided with a storage groove (111) that matches the multimedia display screen (110), and a push rod (120) is welded to one end of the top of the base (100) away from the multimedia display screen (110), and a spring telescopic rod (260) is fixedly connected inside the movable shaft (240).

3. A multimedia display stand according to claim 2, characterized in that: The movable rod end of the spring telescopic rod (260) is fixedly connected with an inclined surface block (270), the inclined surface block (270) is slidably connected with the movable shaft (240), and a slot (271) matching the inclined surface block (270) is provided inside the rotating rod (250).

4. A multimedia display stand according to claim 1, characterized in that: The two sides of the bottom end of the extrusion plate (310) are fixedly connected with springs b (330), the bottom end of the extrusion groove (311) is connected with a curved pipe (320), the end of the curved pipe (320) away from the extrusion groove (311) is fixedly connected with a bellows (340), the end of the bellows (340) away from the curved pipe (320) is fixedly connected with an L-shaped connecting pipe (350), the L-shaped connecting pipe (350) is slidably connected with a telescopic push rod (360) inside, and the side of the telescopic push rod (360) away from the L-shaped connecting pipe (350) is in contact with the ring (3930).

5. A multimedia display stand according to claim 4, characterized in that: A slider (370) is fixedly connected to the surface of the L-shaped connecting tube (350), a square block (380) is slidably connected to the surface of the slider (370), a round shaft (390) is slidably connected to one side of the inside of the square block (380), the round shaft (390) is fixedly connected to the slider (370), and a sliding groove (371) that matches the slider (370) is provided inside the square block (380).

6. A multimedia display stand according to claim 5, characterized in that: A ventilation groove (391) is provided inside the base (100), and the circular shaft (390) is slidably connected to the ventilation groove (391). A piston rod (3910) is slidably connected to the side of the ventilation groove (391) away from the circular shaft (390), and a spring c (3920) is provided on one side of the piston rod (3910), and the end of the piston rod (3910) away from the spring c (3920) is in contact with the protective plate (3998).

7. A multimedia display stand according to claim 1, characterized in that: The top end of the tensioning shaft (3970) is fixedly connected to a transverse plate (3980), and the top end of the transverse plate (3980) is fixedly connected to three groups of springs d (3990), and the top ends of the three groups of springs d (3990) are fixedly connected to the base (100), and the end of the inner wall of the belt (3971) away from the connecting roller (3991) is rotatably connected to the fixed shaft (220).

8. The multimedia display stand according to claim 1, characterized in that: The chain (3994) is provided with two groups, and the inner walls of the two groups of chains (3994) are rotatably connected to the ends of the sprockets a (3993) away from the sprockets b (3995), and a connecting shaft (3996) is fixed between the two groups of sprockets b (3995).

9. A multimedia display stand according to claim 1, characterized in that: The moving assembly (400) comprises a vertical plate (410) fixedly connected to the bottom end of the L-shaped fixed plate (3997), a rack (420) being fixedly connected to one side of the vertical plate (410), and a meshing gear (430) being provided on one side of the rack (420).

10. A multimedia display stand according to claim 9, characterized in that: The center of the gear (430) is fixedly connected to a threaded screw (440), the surface of the threaded screw (440) is rotatably connected to a support plate (450), the support plate (450) is slidably connected to the lower end of the base (100), and the four corners of the bottom end of the support plate (450) are fixedly connected to moving wheels (460).

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