Multi-module combined advertising board

Abstract

The invention discloses a multi-module combined type advertising board, and particularly relates to the technical field of advertising boards, the multi-module combined type advertising board comprises a plurality of advertising substrates which are connected with one another, two inserting blocks are fixedly arranged on one side of the advertising substrate located on one side and one side of the advertising substrate located on the middle portion, and two first inserting grooves are formed in the other side of the advertising substrate located on the other side and the other side of the advertising substrate located on the other side and the other side of the advertising substrate located on the middle portion; and first limiting grooves are formed in the inner sides of the four first limiting plates correspondingly. A plurality of advertisement substrates are connected together through the inserting blocks and the first inserting grooves, then the advertisement substrates are limited through the four first limiting plates and the two limiting ropes, the advertisement substrates can be rapidly installed and connected together, the combination and installation process of the advertisement substrates is simple and convenient, and the advertisement substrates can be conveniently assembled and installed. And the combined mounting efficiency is high, and the winding rod and the limiting rope can be limited and fixed through the first limiting assembly and the second limiting assembly, so that the multiple advertisement substrates are connected more firmly.

Description

Technical Field

[0001] The present invention relates to the technical field of billboards, and in particular to a multi-module combined billboard. Background Art

[0002] Billboards refer to all outdoor media that convey advertising information. The size of the media depends on the actual environment. Billboards are a device used to convey advertising information to the public. They are widely used in daily marketing, trade shows, exhibitions and other places. Most of their sizes are fixed, but sometimes, for the convenience of transportation, some large-sized billboards need to be combined and spliced ​​with multiple modules.

[0003] At present, when assembling existing combined billboards, multiple advertising modules are generally fixed by screws, and external tools are needed for disassembly and assembly, which is troublesome to operate, wastes the operator's time, and reduces the convenience of assembling the advertising modules. Summary of the invention

[0004] The object of the present invention is to provide a multi-module combined billboard to solve the above-mentioned deficiencies in the technology.

[0005] In order to achieve the above object, the present invention provides the following technical solution: a multi-module combined billboard, comprising:

[0006] A plurality of interconnected advertising substrates, wherein two plug-in blocks are fixedly disposed on one side of the advertising substrates located at one side and in the middle, and two first plug-in slots are disposed on the other side of the advertising substrates located at the other side and in the middle, and the plug-in blocks are disposed inside the first plug-in slots;

[0007] Four first limiting plates, each of which has a first limiting groove on its inner side, the outer sides of the advertising substrates on both sides extend into the four first limiting grooves respectively, and a connecting frame is provided on the outer sides of the upper and lower first limiting plates;

[0008] An installation groove, the installation groove is opened inside the first limiting plate, a winding rod is rotatably connected inside the installation groove, a limiting rope is provided at the top and bottom ends of the multiple advertising substrates, both ends of the limiting rope extend into the two installation grooves respectively and are fixedly connected to the outer ends of the two winding rods, a second limiting groove corresponding to the size of the limiting rope is opened at the top and bottom ends of the advertising substrate, the limiting rope is arranged inside the second limiting groove, one end of the winding rod extends to the front end of the first limiting plate and is connected to the first rotating rod, a first limiting assembly is provided at the outer end of the first rotating rod, and a second limiting assembly is provided on the outside of the limiting rope.

[0009] Preferably, the first limiting assembly includes a fixed inner tooth ring fixedly arranged at the front end of the first limiting plate, and a limiting outer tooth ring is fixedly arranged at the outer end of the first rotating rod. The limiting outer tooth ring is arranged inside the fixed inner tooth ring and meshes with the fixed inner tooth ring to facilitate limiting the first rotating rod.

[0010] Preferably, a movable groove is opened inside one end of the winding rod, a square limit block is provided inside the movable groove, a connecting rod is fixedly provided at one end of the square limit block, one end of the connecting rod passes through one end of the winding rod and is fixedly connected to one end of the first rotating rod, a first spring is sleeved on the outer end of the connecting rod, two ends of the first spring are respectively fixedly connected to one end of the square limit block and one end inside the movable groove, so as to facilitate the adjustable connection between the first rotating rod and the winding rod.

[0011] Preferably, the second limiting assembly includes second limiting plates arranged at the top and bottom ends of the advertising substrate, the second limiting plates are arranged on the outside of the limiting rope, an extension block is fixedly provided at the rear end of the second limiting plate, two L-shaped fixing plates are fixedly provided at the rear end of the advertising substrate, the bottom end of the extension block is an arc surface, the bottom end of the extension block extends into the interior of the L-shaped fixing plate, a movable limiting block is provided at the rear end of the vertical portion of the L-shaped fixing plate, the front end of the movable limiting block is an arc surface, a third limiting groove is opened at the rear end of the extension block, the front end of the movable limiting block passes through the L-shaped fixing plate and extends into the third limiting groove, a connecting plate is fixedly provided at the rear end of the movable limiting block, a second spring is fixedly provided at the front end of the connecting plate and the rear end of the L-shaped fixing plate, and the second spring is provided at the top of the movable limiting block, so as to facilitate the limiting and fixing of the outside of the limiting rope.

[0012] Preferably, two fixing plates are fixed on the inner wall of the connecting frame, and a first bidirectional threaded rod is provided between the two fixing plates, two ends of the first bidirectional threaded rod pass through the two fixing plates and are rotatably connected to the two fixing plates, and thread grooves are provided at opposite ends of the two first limiting plates, and two ends of the first bidirectional threaded rod respectively extend into the thread grooves on the two first limiting plates and are threadedly connected between the thread grooves, so as to facilitate adjustment of the positions of the two first limiting plates inside the connecting frame.

[0013] Preferably, a second rotating rod is provided in the middle portion of the outer side of the connecting frame, one end of the second rotating rod passes through the outer side of the connecting frame and is rotatably connected to the connecting frame, one end of the second rotating rod is fixedly provided with a first bevel gear, the outer end of the first bidirectional threaded rod is fixedly provided with a second bevel gear, the first bevel gear and the second bevel gear are meshed with each other, and the other end of the second rotating rod is fixedly provided with a first rotating block, which is convenient for driving the first bidirectional threaded rod to rotate.

[0014] Preferably, four guide slide blocks are fixedly provided on the inner side of the opening of the connection frame, and guide grooves are provided at the front and rear ends of the two first limit plates. The four guide slide blocks are respectively arranged inside the four guide grooves, so as to facilitate the limiting guiding of the first limit plates.

[0015] Preferably, the bottom ends of the two first limiting plates at the bottom are each provided with a support plate, the top of the support plate is provided with a second plug-in slot, the bottom end of the first limiting plate extends into the second plug-in slot, and third limiting components are provided on both sides of the support plate.

[0016] Preferably, the bottom end of the support plate is fixedly connected to a supporting telescopic rod, and the bottom end of the supporting telescopic rod is fixedly provided with a base, so as to facilitate the adjustment of the height of the billboard.

[0017] Preferably, the third limit assembly includes two U-shaped limit frames arranged on both sides of the support plate, a fourth limit groove is opened on both sides of the bottom end of the first limit plate, one end of the U-shaped limit frame extends into the fourth limit groove, and a fifth limit groove is opened on both sides of the support plate, and the other end of the U-shaped limit frame extends into the fifth limit groove. A second two-way threaded rod is provided on the support plate, and the second two-way threaded rod passes through the support plate and is rotatably connected with the support plate through bearings, and two ends of the second two-way threaded rod respectively pass through the two U-shaped limit frames and extend to the outsides of the two U-shaped limit frames, the second two-way threaded rod is threadedly connected to the two U-shaped limit frames and the thread directions are opposite, and a second rotating block is fixedly provided at both ends of the second two-way threaded rod to facilitate the connection and fixing of the first limit plate and the support plate together.

[0018] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0019] 1. Multiple advertising substrates are connected together by the plug-in block and the first plug-in slot, and then the multiple advertising substrates are limited by four first limiting plates and two limiting ropes, so that the multiple advertising substrates can be quickly installed and connected together, making the combined installation process of the multiple advertising substrates simpler and more convenient, and the combined installation efficiency is higher, and the first limiting assembly and the second limiting assembly can limit and fix the winding rod and the limiting rope, so that the multiple advertising substrates are connected more firmly;

[0020] 2. By rotating the first rotating block and the second rotating rod to adjust the position of the two first limiting plates inside the connecting frame, the total length between the two first limiting plates and a connecting frame can be adjusted, and then the length of the limiting rope can be adjusted, so that the size of multiple advertising substrates between the four first limiting plates and the two limiting ropes can be changed as needed, and the applicability is relatively high;

[0021] 3. The two first limiting plates at the bottom are connected and fixed together with the two supporting plates through the third limiting component, so that the connection process of multiple advertising substrates and the first limiting plates with the bottom supporting structure supporting plates and supporting telescopic rods is relatively simple and convenient, further improving the combined installation efficiency of the billboard. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the three-dimensional structure of the advertising substrate, the first limiting plate and the connecting frame of the present invention;

[0025] Figure 3 It is a schematic diagram of a three-dimensional cross-sectional structure of an advertising substrate of the present invention;

[0026] Figure 4 It is a schematic diagram of a three-dimensional cross-sectional structure of the advertising substrate and the second limiting plate of the present invention;

[0027] Figure 5 For the present invention Figure 4 A is a schematic diagram of the enlarged structure;

[0028] Figure 6 It is a schematic diagram of the three-dimensional structure of the first limiting plate and the connecting frame of the present invention;

[0029] Figure 7 The three-dimensional cross-sectional structure of the connection frame of the present invention is schematically shown. Figure 1 ;

[0030] Figure 8 The three-dimensional cross-sectional structure of the connection frame of the present invention is schematically shown. Figure 2 ;

[0031] Fig. 9 It is a schematic diagram of a three-dimensional cross-sectional structure of a first limiting plate of the present invention;

[0032] Fig.10 It is a schematic diagram of a three-dimensional cross-sectional structure of the first rotating rod and the second rotating rod of the present invention;

[0033] Fig.11 It is a schematic diagram of the three-dimensional structure of the support plate, the supporting telescopic rod and the base of the present invention;

[0034] Fig.12It is a schematic diagram of the three-dimensional cross-sectional structure of the support plate and the U-shaped limiting frame of the present invention.

[0035] Description of reference numerals:

[0036] 1. Advertising substrate; 2. Plug-in block; 3. First plug-in slot; 4. First limit plate; 5. First limit slot; 6. Connecting frame; 7. Mounting slot; 8. Winding rod; 9. Limit rope; 10. Second limit slot; 11. First rotating rod; 12. Fixed inner tooth ring; 13. Limit outer tooth ring; 14. Movable slot; 15. Square limit block; 16. Connecting rod; 17. First spring; 18. Second limit plate; 19. Extension block; 20. L-shaped fixed plate; 21. Movable limit block; 22. Third limit slot ; 23. Connecting plate; 24. Second spring; 25. Fixing plate; 26. First bidirectional threaded rod; 27. Threaded groove; 28. Second rotating rod; 29. ​​First bevel gear; 30. Second bevel gear; 31. First rotating block; 32. Guide slider; 33. Guide slide groove; 34. Support plate; 35. Second plug-in groove; 36. Support telescopic rod; 37. Base; 38. U-shaped limit frame; 39. Fourth limit groove; 40. Fifth limit groove; 41. Second bidirectional threaded rod; 42. Second rotating block. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0038] The present invention provides Figures 1 to 7 and Figures 9 and 10 A multi-module combined billboard is shown, comprising:

[0039] A plurality of interconnected advertising substrates 1, one side of the advertising substrates 1 located at one side and the middle is fixed with two plug-in blocks 2, and the other side of the advertising substrates 1 located at the other side and the middle is provided with two first plug-in slots 3, and the plug-in blocks 2 are arranged inside the first plug-in slots 3;

[0040] Four first limiting plates 4, each of which has a first limiting groove 5 formed inside, the outer sides of the advertising substrates 1 on both sides extend into the four first limiting grooves 5 respectively, and a connecting frame 6 is provided outside the upper and lower first limiting plates 4;

[0041] An installation groove 7 is provided inside the first limiting plate 4, a winding rod 8 is rotatably connected inside the installation groove 7, a limiting rope 9 is provided at the top and bottom ends of the plurality of advertising substrates 1, both ends of the limiting rope 9 extend into the two installation grooves 7 respectively and are fixedly connected to the outer ends of the two winding rods 8, a second limiting groove 10 corresponding to the size of the limiting rope 9 is provided at the top and bottom ends of the advertising substrate 1, the limiting rope 9 is provided inside the second limiting groove 10, one end of the winding rod 8 extends to the front end of the first limiting plate 4 and is connected to a first rotating rod 11, a first limiting assembly is provided at the outer end of the first rotating rod 11, and a second limiting assembly is provided on the outer side of the limiting rope 9.

[0042] The first limiting assembly includes a fixed inner toothed ring 12 fixedly arranged at the front end of the first limiting plate 4, a limiting outer toothed ring 13 is fixedly arranged at the outer end of the first rotating rod 11, the limiting outer toothed ring 13 is arranged inside the fixed inner toothed ring 12 and meshes with the fixed inner toothed ring 12, a movable groove 14 is opened inside one end of the winding rod 8, a square limiting block 15 is arranged inside the movable groove 14, a connecting rod 16 is fixedly arranged at one end of the square limiting block 15, one end of the connecting rod 16 passes through one end of the winding rod 8 and is fixedly connected to one end of the first rotating rod 11, a first spring 17 is sleeved on the outer end of the connecting rod 16, and two ends of the first spring 17 are respectively fixedly connected to one end of the square limiting block 15 and one end inside the movable groove 14.

[0043] The second limiting assembly includes a second limiting plate 18 arranged at the top and bottom ends of the advertising substrate 1, the second limiting plate 18 is arranged on the outside of the limiting rope 9, an extension block 19 is fixedly provided at the rear end of the second limiting plate 18, two L-shaped fixing plates 20 are fixedly provided at the rear end of the advertising substrate 1, the bottom end of the extension block 19 is an arc surface, and the bottom end of the extension block 19 extends into the L-shaped fixing plate 20, a movable limiting block 21 is provided at the rear end of the vertical portion of the L-shaped fixing plate 20, the front end of the movable limiting block 21 is an arc surface, a third limiting groove 22 is opened at the rear end of the extension block 19, the front end of the movable limiting block 21 passes through the L-shaped fixing plate 20 and extends into the third limiting groove 22, a connecting plate 23 is fixedly provided at the rear end of the movable limiting block 21, a second spring 24 is fixedly provided at the front end of the connecting plate 23 and the rear end of the L-shaped fixing plate 20, and the second spring 24 is arranged on the top of the movable limiting block 21.

[0044] Plug the plugging blocks 2 and the first plugging slots 3 on the multiple advertising substrates 1 into each other, and then connect the multiple advertising substrates 1 together, first pick up the multiple second limiting plates 18 from the outside of the limiting ropes 9 on the advertising substrate 1, and then clamp the four first limiting plates 4 on the outside of the advertising substrates 1 on both sides, clamp the limiting ropes 9 inside the second limiting slots 10 on the advertising substrate 1, pull the first rotating rod 11 outward, the first rotating rod 11 drives the limiting outer tooth ring 13 to move outward, and at the same time, the first rotating rod 11 drives the connecting rod 16 and the square limiting block 15 to move, and the square limiting block 15 The first spring 17 will be compressed. When the limiting outer toothed ring 13 leaves the fixed inner toothed ring 12, the first rotating rod 11 is rotated. The first rotating rod 11 drives the connecting rod 16 and the square limiting block 15 to rotate. The square limiting block 15 drives the winding rod 8 to rotate. The winding rod 8 will reel the limiting rope 9. When the limiting rope 9 is tightened, the first rotating rod 11 is pushed back to its original position. The first rotating rod 11 drives the limiting outer toothed ring 13 back to the fixed inner toothed ring 12. At this time, the limiting outer toothed ring 13 will limit and fix the first rotating rod 11, and then the winding rod 8 can be limited and fixed.

[0045] The second limiting plate 18 is covered on the outside of the limiting rope 9, and the second limiting plate 18 will limit and fix the limiting rope 9. The extending block 19 on the second limiting plate 18 will be inserted into the L-shaped fixing plate 20. The arc surface at the bottom end of the extending block 19 will contact the arc surface at the front end of the movable limiting block 21. The bottom end of the extending block 19 will push the movable limiting block 21 to move backward. When the third limiting groove 22 on the extending block 19 moves to the front end of the movable limiting block 21, the connecting plate 23 will drive the front end of the movable limiting block 21 to enter the third limiting groove 22 under the elastic force of the second spring 24, so that the second limiting plate 18 can be limited and fixed.

[0046] The present invention connects a plurality of advertising substrates 1 together through the plug-in block 2 and the first plug-in slot 3, and then limits the plurality of advertising substrates 1 through four first limiting plates 4 and two limiting ropes 9, so that the plurality of advertising substrates 1 can be quickly installed and connected together, so that the combined installation process of the plurality of advertising substrates 1 is relatively simple and convenient, and the combined installation efficiency is relatively high, and the first limiting assembly and the second limiting assembly can limit and fix the winding rod 8 and the limiting rope 9, so that the plurality of advertising substrates 1 are connected more firmly. This embodiment specifically solves the problem that when assembling a combined billboard in the prior art, the plurality of advertising modules are generally fixed by screws, and the disassembly and assembly process requires the aid of external tools, which is more troublesome to operate, wastes the operator's time, and reduces the convenience of assembling the advertising modules.

[0047] The present invention provides Figures 6 to 8A multi-module combined billboard is shown, two fixing plates 25 are fixed on the inner wall of the connecting frame 6, a first bidirectional threaded rod 26 is arranged between the two fixing plates 25, both ends of the first bidirectional threaded rod 26 pass through the two fixing plates 25 and are rotatably connected between the two fixing plates 25, the opposite ends of the two first limiting plates 4 are provided with thread grooves 27, both ends of the first bidirectional threaded rod 26 extend into the inside of the thread grooves 27 on the two first limiting plates 4 and are threadedly connected between the thread grooves 27, a second rotating rod 28 is arranged in the middle of the outer side of the connecting frame 6, and the first rotating rod 28 is arranged in the middle of the outer side of the connecting frame 6. One end of the second rotating rod 28 passes through the outside of the connecting frame 6 and is rotatably connected to the connecting frame 6. A first bevel gear 29 is fixedly arranged at one end of the second rotating rod 28. A second bevel gear 30 is fixedly arranged at the outer end of the first bidirectional threaded rod 26. The first bevel gear 29 and the second bevel gear 30 are meshed with each other. A first rotating block 31 is fixedly arranged at the other end of the second rotating rod 28. Four guide sliders 32 are fixedly arranged on the inner side of the opening of the connecting frame 6. Guide grooves 33 are provided at the front and rear ends of the two first limiting plates 4. The four guide sliders 32 are respectively arranged in the four guide grooves 33.

[0048] The first rotating block 31 is rotated, and the first rotating block 31 drives the second rotating rod 28 to rotate, and the second rotating rod 28 drives the first bevel gear 29 to rotate, and the first bevel gear 29 drives the second bevel gear 30 to rotate, and the second bevel gear 30 drives the first bidirectional threaded rod 26 to rotate. Since the first bidirectional threaded rod 26 is threadedly connected to the thread groove 27, the two first limiting plates 4 move away from each other as the first bidirectional threaded rod 26 rotates, so that the total length of the two first limiting plates 4 and the connecting frame 6 can be adjusted, and the length of the limiting rope 9 is adjusted, so that the advertising substrates 1 of different lengths and widths can be limitedly connected, and the positions of the two first limiting plates 4 and the inside of the connecting frame 6 are adjusted by rotating the first rotating block 31 and the second rotating rod 28, so that the total length between the two first limiting plates 4 and a connecting frame 6 can be adjusted, and the length of the limiting rope 9 is adjusted, so that the sizes of multiple advertising substrates 1 between the four first limiting plates 4 and the two limiting ropes 9 can be changed as needed, and the applicability is relatively high.

[0049] The present invention provides Figure 6 and Figure 11 to Figure 12 A multi-module combined billboard is shown, in which the bottom ends of the two first limiting plates 4 at the bottom are each provided with a support plate 34, the top of the support plate 34 is provided with a second plug-in slot 35, the bottom end of the first limiting plate 4 extends into the second plug-in slot 35, and third limiting components are provided on both sides of the support plate 34. The bottom end of the support plate 34 is fixedly connected to a supporting telescopic rod 36, and the bottom end of the supporting telescopic rod 36 is fixedly provided with a base 37.

[0050] The third limiting assembly includes two U-shaped limiting frames 38 arranged on both sides of the support plate 34, a fourth limiting groove 39 is opened on both sides of the bottom end of the first limiting plate 4, one end of the U-shaped limiting frame 38 extends into the fourth limiting groove 39, a fifth limiting groove 40 is opened on both sides of the support plate 34, and the other end of the U-shaped limiting frame 38 extends into the fifth limiting groove 40, a second bidirectional threaded rod 41 is provided on the support plate 34, the second bidirectional threaded rod 41 passes through the support plate 34 and is rotatably connected with the support plate 34 through a bearing, two ends of the second bidirectional threaded rod 41 respectively pass through the two U-shaped limiting frames 38 and extend to the outside of the two U-shaped limiting frames 38, the second bidirectional threaded rod 41 is connected to the two U-shaped limiting frames 38 by threads and the thread directions are opposite, and a second rotating block 42 is fixedly provided at both ends of the second bidirectional threaded rod 41.

[0051] The assembled multiple advertising substrates 1 and the first limiting plate 4 are placed on the top of the two supporting plates 34, so that the bottom ends of the two first limiting plates 4 at the bottom are inserted into the second plug-in slots 35 on the two supporting plates 34, and the second rotating block 42 is rotated. The second rotating block 42 drives the second bidirectional threaded rod 41 to rotate. Since the second bidirectional threaded rod 41 is threadedly connected to the U-shaped limiting frame 38, the two U-shaped limiting frames 38 approach each other as the second bidirectional threaded rod 41 rotates, and the two ends of the two U-shaped limiting frames 38 are respectively stuck in the two fourth limiting slots 39 and the two fifth limiting slots 40, so that the first limiting plate 4 can be limited and fixed on the supporting plate 34, and then the first limiting plate 4 and the advertising substrate 1 can be connected to the supporting structure at the bottom, and the two first limiting plates 4 at the bottom are connected and fixed to the two supporting plates 34 through the third limiting component, so that the connection process of the multiple advertising substrates 1 and the first limiting plate 4 with the supporting structure support plate 34 and the supporting telescopic rod 36 at the bottom is relatively simple and convenient, which further improves the combined installation efficiency of the billboard.

[0052] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A multi-module combined billboard, characterized in that: include: A plurality of mutually connected advertising substrates (1), wherein two plug-in blocks (2) are fixedly provided on one side of the advertising substrates (1) located at one side and in the middle, and two first plug-in slots (3) are provided on the other side of the advertising substrates (1) located at the other side and in the middle, and the plug-in blocks (2) are arranged inside the first plug-in slots (3); Four first limiting plates (4), each of the four first limiting plates (4) having a first limiting groove (5) formed inside, the outer sides of the advertising substrate (1) located on both sides respectively extending into the four first limiting grooves (5), and a connecting frame (6) being provided on the outer sides of the upper and lower first limiting plates (4); A mounting groove (7), wherein the mounting groove (7) is provided inside the first limiting plate (4), a winding rod (8) is rotatably connected inside the mounting groove (7), a limiting rope (9) is provided at the top and bottom ends of the plurality of advertising substrates (1), two ends of the limiting rope (9) respectively extend into the two mounting grooves (7) and are fixedly connected to the outer ends of the two winding rods (8), a second limiting groove (10) corresponding to the size of the limiting rope (9) is provided at the top and bottom ends of the advertising substrate (1), the limiting rope (9) is provided inside the second limiting groove (10), one end of the winding rod (8) extends to the front end of the first limiting plate (4) and is connected to the first rotating rod (11), a first limiting component is provided at the outer end of the first rotating rod (11), and a second limiting component is provided on the outer side of the limiting rope (9).

2. A multi-module combined billboard according to claim 1, characterized in that: The first limiting assembly comprises a fixed inner toothed ring (12) fixedly arranged at the front end of the first limiting plate (4); a limiting outer toothed ring (13) fixedly arranged at the outer end of the first rotating rod (11); the limiting outer toothed ring (13) is arranged inside the fixed inner toothed ring (12) and meshes with the fixed inner toothed ring (12).

3. A multi-module combined billboard according to claim 2, characterized in that: A movable groove (14) is provided inside one end of the winding rod (8), a square limit block (15) is provided inside the movable groove (14), a connecting rod (16) is fixedly provided at one end of the square limit block (15), one end of the connecting rod (16) passes through one end of the winding rod (8) and is fixedly connected to one end of the first rotating rod (11), a first spring (17) is sleeved on the outer end of the connecting rod (16), and two ends of the first spring (17) are respectively fixedly connected to one end of the square limit block (15) and one end inside the movable groove (14).

4. The multi-module combined billboard according to claim 1, characterized in that: The second limiting assembly comprises a second limiting plate (18) arranged at the top and bottom ends of the advertising substrate (1), the second limiting plate (18) being arranged outside the limiting rope (9), an extension block (19) being fixedly provided at the rear end of the second limiting plate (18), two L-shaped fixing plates (20) being fixedly provided at the rear end of the advertising substrate (1), the bottom end of the extension block (19) being an arc surface, the bottom end of the extension block (19) extending into the interior of the L-shaped fixing plate (20), and a movable member being provided at the rear end of the vertical portion of the L-shaped fixing plate (20) A limit block (21), wherein the front end of the movable limit block (21) is an arc surface, the rear end of the extension block (19) is provided with a third limit groove (22), the front end of the movable limit block (21) passes through the L-shaped fixed plate (20) and extends into the third limit groove (22), the rear end of the movable limit block (21) is fixedly provided with a connecting plate (23), the front end of the connecting plate (23) and the rear end of the L-shaped fixed plate (20) are fixedly provided with a second spring (24), and the second spring (24) is arranged on the top of the movable limit block (21).

5. The multi-module combined billboard according to claim 1, characterized in that: Two fixing plates (25) are fixedly provided on the inner wall of the connection frame (6), a first bidirectional threaded rod (26) is provided between the two fixing plates (25), two ends of the first bidirectional threaded rod (26) pass through the two fixing plates (25) and are rotatably connected to the two fixing plates (25), and thread grooves (27) are provided at opposite ends of the two first limiting plates (4), and two ends of the first bidirectional threaded rod (26) respectively extend into the thread grooves (27) on the two first limiting plates (4) and are threadedly connected to the thread grooves (27).

6. The multi-module combined billboard according to claim 5, characterized in that: A second rotating rod (28) is provided in the middle of the outer side of the connecting frame (6); one end of the second rotating rod (28) passes through the outer side of the connecting frame (6) and is rotatably connected to the connecting frame (6); a first bevel gear (29) is fixedly provided at one end of the second rotating rod (28); a second bevel gear (30) is fixedly provided at the outer end of the first bidirectional threaded rod (26); the first bevel gear (29) and the second bevel gear (30) are meshed with each other; and a first rotating block (31) is fixedly provided at the other end of the second rotating rod (28).

7. The multi-module combined billboard according to claim 5, characterized in that: Four guide slide blocks (32) are fixedly provided on the inner side of the opening of the connection frame (6), and guide slide grooves (33) are provided at the front and rear ends of the two first limit plates (4), and the four guide slide blocks (32) are respectively arranged inside the four guide slide grooves (33).

8. The multi-module combined billboard according to claim 1, characterized in that: A support plate (34) is provided at the bottom end of each of the two first limit plates (4) located at the bottom, a second plugging slot (35) is provided at the top end of the support plate (34), the bottom end of the first limit plate (4) extends into the second plugging slot (35), and third limit assemblies are provided on both sides of the support plate (34).

9. The multi-module combined billboard according to claim 8, characterized in that: The bottom end of the support plate (34) is fixedly connected to a support telescopic rod (36), and the bottom end of the support telescopic rod (36) is fixedly provided with a base (37).

10. The multi-module combined billboard according to claim 8, characterized in that: The third limiting assembly comprises two U-shaped limiting frames (38) arranged on both sides of the support plate (34); a fourth limiting groove (39) is provided on both sides of the bottom end of the first limiting plate (4); one end of the U-shaped limiting frame (38) extends into the fourth limiting groove (39); a fifth limiting groove (40) is provided on both sides of the support plate (34); the other end of the U-shaped limiting frame (38) extends into the fifth limiting groove (40); a second bidirectional threaded rod (41) is provided on the support plate (34); the second bidirectional threaded rod (41) passes through the support plate (34) and is rotatably connected to the support plate (34) through a bearing; two ends of the second bidirectional threaded rod (41) respectively pass through the two U-shaped limiting frames (38) and extend to the outside of the two U-shaped limiting frames (38); the second bidirectional threaded rod (41) is connected to the two U-shaped limiting frames (38) through threads and the threads are in opposite directions; and a second rotating block (42) is fixedly provided at both ends of the second bidirectional threaded rod (41).

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