Adjustable intelligent bulletin board

Abstract

The present application relates to the field of bulletin board, specifically to an adjustable intelligent bulletin board, which comprises a supporting mechanism, a bulletin board mechanism and a driving mechanism, and the bulletin board mechanism and the driving mechanism are arranged on the two sides of the supporting mechanism respectively; the supporting mechanism comprises a supporting frame, which is in a shape of a Chinese character 'fang'; the bulletin board mechanism comprises a main bulletin board and a vice extended bulletin board, and the main bulletin board is fixedly connected to the supporting frame. When the transmission screw rod rotates, it can drive the travel block to push the vice extended bulletin board to extend outward, so as to extend the main bulletin board, so that the length of the bulletin board can be adjusted. The board surface of the vice extended bulletin board and the board surface of the main bulletin board are located in the same horizontal plane, which can effectively avoid the problem that the board surface of the vice extended bulletin board and the board surface of the main bulletin board have a height difference, causing the unevenness of the bulletin board, so that the poster is more flat and easy to observe when pasted on the bulletin board.

Description

Technical Field

[0001] This invention relates to the field of bulletin boards, specifically an adjustable intelligent bulletin board. Background Technology

[0002] A bulletin board is a form of visual identity application. As an important information dissemination tool, it has multiple functions, providing a publicity platform for different organizations and individuals, and improving the effectiveness of publicity and the efficiency of information transmission. Nowadays, bulletin boards are very common in communities, workplaces, companies, and residential areas, serving as an important form of signage.

[0003] In today's information age, the public has access to a wide variety of information through various channels, making the role of bulletin boards indispensable. While traditional bulletin board structures are simple, they still have the following drawbacks in practical use. Since bulletin boards are designed for easy viewing of posters, the posters need to be fully and completely laid flat on the board. However, due to the varying lengths of different posters and the fact that most existing bulletin boards are not adjustable, posters that are too long cannot be fully laid flat. Designing the initial length of the bulletin board too long not only hinders transportation and storage but also results in large blank spaces when the posters are short, making the posters and their content less prominent. Even with extendable secondary bulletin boards, the height difference between the secondary and primary boards after flipping them causes unevenness when the posters are pasted on the board, making them difficult for observers to see. Summary of the Invention

[0004] To address the problems in the existing technology, this invention provides an adjustable intelligent bulletin board.

[0005] The technical solution adopted by the present invention to solve its technical problem is: an adjustable intelligent bulletin board, including a support mechanism, a bulletin board mechanism and a drive mechanism, wherein the bulletin board mechanism and the drive mechanism are respectively arranged on both sides of the support mechanism;

[0006] The support mechanism includes a support frame, which has an U-shaped structure;

[0007] The advertising board structure includes a main advertising board and secondary extended advertising boards;

[0008] The main advertising display board is fixedly connected to the support frame. A rotating shaft is rotatably inserted into the wall of the main advertising display board near the support frame. A pressing screw is symmetrically arranged above and below the rotating shaft. Both pressing screws are rotatably inserted into the wall of the main advertising display board.

[0009] Two secondary extended advertising panels are provided, and the two secondary extended advertising panels are symmetrically arranged at both ends of the main advertising panel. An extension plate and a connecting plate are fixedly connected to the wall of each of the two secondary extended advertising panels near the end of the main advertising panel. A through hole is opened through the wall of the connecting plate, and the through hole passes through the secondary extended advertising panel. A travel pressure plate is fixedly connected to the end of the connecting plate away from the secondary extended advertising panel. A sliding groove is opened through the side wall of the travel pressure plate, and a limit groove is opened on the inner wall of the sliding groove.

[0010] The driving mechanism includes a servo motor, which is mounted on the outer wall of the support frame away from the main advertising board via a fixed frame. The output end of the servo motor moves through the support frame and is fixedly connected to the rotating shaft via a coupling. A first transmission sleeve is sleeved on the shaft wall of the rotating shaft via a first one-way bearing, and a second transmission sleeve is sleeved on the shaft wall via a second one-way bearing. Neither the first transmission sleeve nor the second transmission sleeve is in direct contact with the rotating shaft. A groove is formed at the end of the first transmission sleeve near the second transmission sleeve, and an annular groove is formed on the outer wall of the second transmission sleeve near the end of the first transmission sleeve. A spring is sleeved on the outer wall of the annular groove, and the spring is located inside the groove. The two ends of the spring are fixedly connected to the outer wall of the annular groove and the inner wall of the groove, respectively.

[0011] A first bevel gear is damped and sleeved on the outer wall of the first transmission sleeve. Second bevel gears are symmetrically meshed on both sides of the first bevel gear. A transmission screw is fixedly inserted at the center of the second bevel gear. A stroke block is threaded onto the rod wall at the other end of the transmission screw. A stroke frame is fixedly connected to the stroke block. A reset groove is opened on the side of the stroke frame away from the stroke block. A pin is inserted through the side wall of the stroke frame near the stroke block. A tension spring is sleeved on the outer wall of one end of the stroke frame through the pin. One end of the tension spring is fixedly connected to the inner wall of the stroke frame, and the other end of the tension spring is fixedly connected to the connecting plate. The pin is movably inserted into the through hole through the end of the tension spring.

[0012] The outer cylinder wall of the second transmission sleeve is damped by a first gear. The top and bottom of the first gear are meshed with second gears. The two second gears are respectively fixedly sleeved on the rod walls of the two pressing screws. The rod walls of the two pressing screws located between the main advertising board and the second gears are threaded with internal threaded sleeves. The internal threaded sleeves extend movably into the interior of the slide groove. The outer cylinder wall of the internal threaded sleeve located inside the slide groove is fixedly sleeved with a limit slider. The limit slider is slidably inserted into the interior of the limit groove.

[0013] Specifically, the support mechanism also includes two support frames, which are symmetrically and fixedly connected to both sides of the support frame.

[0014] The end of the transmission screw away from the second bevel gear is rotatably connected to the adjacent support frame, and the transmission screw is rotatably connected to the end of the support frame away from the support frame.

[0015] Specifically, the servo motor is electrically connected to an external power supply via a PLC controller.

[0016] Specifically, a support rod is fixedly connected to the bottom of the support frame, and a counterweight base is fixedly connected to the bottom of the support rod.

[0017] Specifically, the main advertising board has stroke grooves on the top and bottom side walls near the support frame, and stroke sliding ends are provided at both ends of the two stroke frames, which are slidably inserted into the interior of the adjacent stroke grooves.

[0018] Specifically, the main advertising board has a first slot and a first recess at both ends near the support frame, and the two secondary extended advertising boards have a second slot and a second recess on the wall near the main advertising board. The second slot is adapted to the first slot, and the second recess is adapted to the first recess.

[0019] The beneficial effects of this invention are:

[0020] This invention sets the advertising board mechanism as a main advertising board and two auxiliary extension advertising boards on both sides. When the length of the main advertising board is insufficient to support the poster for pasting, the drive mechanism can drive the bevel gear set to drive the transmission screw to rotate. When the transmission screw rotates, it can drive the stroke block to push the auxiliary extension advertising boards to extend outward, thereby extending the main advertising board and making the length of the advertising board adjustable.

[0021] After the drive mechanism extends the advertising display board, its internal gear set can drive the pressing screw to rotate. When the pressing screw rotates, it can drive the travel pressure plate through the internal threaded sleeve and the limit slider to push the connecting plate and the secondary extension advertising display board, so that the surface of the secondary extension advertising display board is on the same horizontal plane as the surface of the main advertising display board. This can effectively avoid the problem of unevenness of the advertising display board caused by the height difference between the surface of the secondary extension advertising display board and the surface of the main advertising display board, making the posters more flat and easier to observe when pasted on the advertising display board. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 A schematic diagram of the extended structure of an adjustable intelligent bulletin board provided by the present invention. Figure 1 ;

[0024] Figure 2A schematic diagram of the extended structure of an adjustable intelligent bulletin board provided by the present invention. Figure 2 ;

[0025] Figure 3 A structural diagram illustrating the extension process of an adjustable intelligent bulletin board provided by this invention. Figure 1 ;

[0026] Figure 4 A structural diagram illustrating the extension process of an adjustable intelligent bulletin board provided by this invention. Figure 2 ;

[0027] Figure 5 This invention provides a schematic diagram of the structure of an adjustable intelligent bulletin board in its initial state. Figure 1 ;

[0028] Figure 6 This invention provides a schematic diagram of the structure of an adjustable intelligent bulletin board in its initial state. Figure 2 ;

[0029] Figure 7 A schematic diagram of the support mechanism in an adjustable intelligent bulletin board provided by the present invention;

[0030] Figure 8 A schematic diagram of the structure of the main display panel in an adjustable intelligent bulletin board provided by the present invention;

[0031] Figure 9 A schematic diagram of the structure of a secondary extended advertising display panel in an adjustable intelligent advertising display provided by the present invention;

[0032] Figure 10 A cross-sectional view of a transmission sleeve in an adjustable intelligent bulletin board provided by the present invention;

[0033] Figure 11 A schematic diagram of the spring in an adjustable intelligent bulletin board provided by the present invention. Figure 1 ;

[0034] Figure 12 A schematic diagram of the spring in an adjustable intelligent bulletin board provided by the present invention. Figure 2 ;

[0035] Figure 13 This invention provides a schematic diagram of the structure of a travel pressure plate in an adjustable intelligent bulletin board.

[0036] Figure 14 This is a schematic diagram of the structure of the adjustable intelligent bulletin board frame provided by the present invention.

[0037] In the diagram: 1. Support mechanism; 11. Support frame; 12. Support rod; 13. Counterweight base; 14. Support frame; 2. Advertising board mechanism; 21. Main advertising board; 211. Stroke groove; 212. First slot; 213. First groove; 214. Pressing screw; 215. Rotating shaft; 22. Secondary extension advertising board; 221. Second slot; 222. Second groove; 223. Extension plate; 224. Connecting plate; 225. Through hole; 226. Stroke pressure plate; 2261. Slide groove; 2262. Limiting groove; 3. Drive Mechanism; 31. Servo motor; 32. First one-way bearing; 33. Second one-way bearing; 34. First transmission sleeve; 35. Second transmission sleeve; 36. Groove; 37. Ring groove; 38. Spring; 39. First bevel gear; 310. Second bevel gear; 311. Transmission screw; 312. Stroke block; 313. Stroke frame; 314. Reset groove; 315. Pin; 316. Tension spring; 317. Stroke slide end; 318. First gear; 319. Second gear; 320. Internal threaded sleeve; 321. Limiting slider. Detailed Implementation

[0038] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0039] like Figures 1-14 As shown, the adjustable intelligent bulletin board of the present invention includes a support mechanism 1, a bulletin board mechanism 2, and a drive mechanism 3, with the bulletin board mechanism 2 and the drive mechanism 3 respectively disposed on both sides of the support mechanism 1.

[0040] The support mechanism 1 includes a support frame 11, which has a U-shaped structure;

[0041] The information board structure 2 includes a main information board 21 and an auxiliary extended information board 22;

[0042] The main advertising board 21 is fixedly connected to the support frame 11. A rotating shaft 215 is rotatably inserted into the wall of the main advertising board 21 near the support frame 11. A pressing screw 214 is symmetrically arranged above and below the rotating shaft 215. Both pressing screws 214 are rotatably inserted into the wall of the main advertising board 21.

[0043] Two secondary extension advertising boards 22 are provided, and the two secondary extension advertising boards 22 are symmetrically arranged at both ends of the main advertising board 21. An extension plate 223 and a connecting plate 224 are fixedly connected to the plate wall of the two secondary extension advertising boards 22 near the end of the main advertising board 21. A through hole 225 is opened through the plate wall of the connecting plate 224, and the through hole 225 passes through the secondary extension advertising board 22. A travel pressure plate 226 is fixedly connected to the end of the connecting plate 224 away from the secondary extension advertising board 222. A sliding groove 2261 is opened through the side plate wall of the travel pressure plate 226, and a limit groove 2262 is opened on the inner wall of the sliding groove 2261.

[0044] The drive mechanism 3 includes a servo motor 31, which is mounted on the outer wall of the support frame 11 away from the main advertising board 21 via a fixed frame. The output end of the servo motor 31 moves through the support frame 11 and is fixedly connected to the rotating shaft 215 via a coupling. A first transmission sleeve 34 is sleeved on the shaft wall of the rotating shaft 215 via a first one-way bearing 32, and a second transmission sleeve 35 is sleeved on the shaft wall via a second one-way bearing 33. Neither the first transmission sleeve 34 nor the second transmission sleeve 35 is in direct contact with the rotating shaft 215. A groove 36 is provided at the end of the first transmission sleeve 34 near the second transmission sleeve 35. An annular groove 37 is provided on the outer wall of the second transmission sleeve 35 near the end of the first transmission sleeve 34. A spring 38 is sleeved on the outer wall of the annular groove 37. The spring 38 is located inside the groove 36, and both ends of the spring 38 are fixedly connected to the outer wall of the annular groove 37 and the inner wall of the groove 36, respectively.

[0045] A first bevel gear 39 is damped and sleeved on the outer wall of the first transmission sleeve 34. A second bevel gear 310 is symmetrically meshed on both sides of the first bevel gear 39. A transmission screw 311 is fixedly inserted at the center of the second bevel gear 310. A stroke block 312 is threaded onto the rod wall at the other end of the transmission screw 311. A stroke frame 313 is fixedly connected to the stroke block 312. A reset groove 314 is opened on the side of the stroke frame 313 away from the stroke block 312. A pin 315 is inserted through the side wall of the stroke frame 313 near the stroke block 312. A tension spring 316 is sleeved on the outer wall of one end of the pin 315. One end of the tension spring 316 is fixedly connected to the inner wall of the stroke frame 313, and the other end of the tension spring 316 is fixedly connected to the connecting plate 224. The pin 315 is movably inserted into the through hole 225 through one end of the tension spring 316.

[0046] The outer cylinder wall of the second transmission sleeve 35 is damped by a first gear 318. The top and bottom of the first gear 318 are meshed with second gears 319. The two second gears 319 are respectively fixedly sleeved on the rod walls of the two pressing screws 214. The rod walls of the two pressing screws 214 located between the main advertising board 21 and the second gears 319 are threaded with internal thread sleeves 320. The internal thread sleeves 320 extend movably into the interior of the slide groove 2261. The inner thread sleeves 320 are fixedly sleeved on the outer cylinder wall inside the slide groove 2261, and the limiting sliders 321 are slidably inserted into the interior of the limiting groove 2262.

[0047] The support mechanism 1 also includes a support frame 14. There are two support frames 14, and the two support frames 14 are symmetrically fixedly connected to both sides of the support frame 11.

[0048] The end of the transmission screw 311 away from the second bevel gear 310 is rotatably connected to the adjacent support frame 14, and the transmission screw 311 is rotatably connected to the end of the support frame 14 away from the support frame 11. The support frame 14 can effectively make the transmission screw 311 more stable when rotating.

[0049] The servo motor 31 is electrically connected to an external power supply through a PLC controller. The TB6600 PLC controller can effectively control the speed and direction of the servo motor 31, ensuring that the device can be driven normally.

[0050] A support rod 12 is fixedly connected to the bottom of the support frame 11, and a counterweight base 13 is fixedly connected to the bottom of the support rod 12. The counterweight base 13 can provide stable support for the support frame 11 through the support rod 12.

[0051] The main advertising board 21 has stroke grooves 211 on the top and bottom side walls near the support frame 11. Both ends of the two stroke frames 313 are provided with stroke sliding ends 317, and the stroke sliding ends 317 are slidably inserted into the interior of the adjacent stroke grooves 211, which can effectively make the stroke frames 313 more stable when sliding.

[0052] The main advertising display panel 21 has a first slot 212 and a first groove 213 at both ends near the support frame 11. The two secondary extended advertising display panels 22 have a second slot 221 and a second groove 222 on the wall near the end of the main advertising display panel 21. The second slot 221 is adapted to the first slot 212, and the second groove 222 is adapted to the first groove 213. The slots and grooves can effectively make the connection between the secondary extended advertising display panel 22 and the main advertising display panel 21 more stable after extension.

[0053] In the initial state, the secondary extended advertising display panel 22 is retracted and folded behind the main advertising display panel 21. The size of the display panel is the same as that of the main advertising display panel 21. The positional relationship between the secondary extended advertising display panel 22 and the main advertising display panel 21 at this time is shown in the attached figure. Figure 5 and attached Figure 6 As shown, the overall size of its bulletin board is relatively small, and the bulletin board can be easily transported and stored after the support rod 12 is separated from the support frame 11.

[0054] When the rotating shaft 215 rotates clockwise, its first transmission sleeve 34 can rotate clockwise under the drive of the first one-way bearing 32, while the second one-way bearing 33 inside the second transmission sleeve 35 rotates idling at this time, so that the second transmission sleeve 35 does not rotate with the clockwise rotation of the rotating shaft 215.

[0055] When the rotating shaft 215 rotates counterclockwise, its second transmission sleeve 35 can rotate counterclockwise under the drive of the second one-way bearing 33, while the first one-way bearing 32 inside the first transmission sleeve 34 rotates idling at this time, so that the first transmission sleeve 34 does not rotate with the counterclockwise rotation of the rotating shaft 215.

[0056] In use, when the length of the main advertising display board 21 is insufficient to paste the poster, the servo motor 31 is activated. The output end of the servo motor 31 drives the rotating shaft 215 to rotate clockwise. When the rotating shaft 215 rotates clockwise, it drives the first transmission sleeve 34 to rotate clockwise through the first one-way bearing 32. When the first transmission sleeve 34 rotates clockwise, it drives the transmission screw 311 to rotate through the bevel gear set. When the transmission screw 311 rotates, it drives the stroke block 312 to move. When the stroke block 312 extends outward, it drives the stroke frame 313 to move. The tension spring 316 inside the stroke frame 313 pulls the connecting plate 224 and the secondary extended advertising display board 22 towards the inside of the reset groove 314, so that the pin 315 is inserted into the inside of the through hole 225. This allows the stroke frame 313 to drive the secondary extended advertising display board 22 to extend outward during the movement. At this time, the positional relationship between the secondary extended advertising display board 22 and the main advertising display board 21 is as shown in the attached figure. Figure 3 and attached Figure 4As shown, when the travel slide end 317 on the travel frame 313 slides to the end of the travel groove 211, the spring 38 in the groove 36 inside the first transmission sleeve 34 is in a non-rotating state. This causes the spring 38 to drive the second transmission sleeve 35 to rotate clockwise. At this time, the first bevel gear 39 cannot rotate because the travel slide end 317 on the travel frame 313 has slid to the end of the travel groove 211. This causes the first transmission sleeve 34 to rotate, which in turn drives the second transmission sleeve 35 to rotate via the spring 38. When the transmission sleeve 35 rotates, it drives the pressing screw 214 to rotate via the gear set. When the pressing screw 214 rotates, it drives the internal threaded sleeve 320, which is threaded onto its rod wall, to push the travel pressure plate 226 towards the main advertising display board 21 through the setting of the limiting slider 321. This causes the travel pressure plate 226 to drive the slots and grooves on the secondary extension advertising display board 22 to connect with the slots and grooves on the main advertising display board 21. At this time, the positional relationship between the secondary extension advertising display board 22 and the main advertising display board 21 is as shown in the attached figure. Figure 1 and attached Figure 2 As shown, the overall length of the bulletin board is increased to the sum of the lengths of the two secondary extended bulletin board panels 22 and the main bulletin board panel 21. The surfaces of the secondary extended bulletin board panels 22 and the main bulletin board panel 21 are on the same horizontal plane, which can effectively avoid the problem of unevenness of the bulletin board caused by the height difference between the surfaces of the secondary extended bulletin board panels 22 and the main bulletin board panel 21. This makes the posters more flat and easier to observe when pasted on the bulletin board.

[0057] When the secondary extension display panel 22 is retracted, the output of the servo motor 31, controlled by the PLC controller, drives the rotating shaft 215 to rotate counterclockwise. When the rotating shaft 215 rotates counterclockwise, it drives the second transmission sleeve 35 to rotate counterclockwise via the second one-way bearing 33. Meanwhile, the first transmission sleeve 34 remains stationary. Similarly, when the second transmission sleeve 35 rotates counterclockwise, it drives the secondary extension display panel 22 to retract via the gear set, the pressure screw 214, the internal threaded sleeve 320, the limit slider 321, and the stroke pressure plate 226. This results in the positional relationship between the secondary extension display panel 22 and the main display panel 21 as shown in the attached figure. Figure 3 and attached Figure 4 As shown in the figure, as the second transmission sleeve 35 continues to rotate, the spring 38 fixed on the outer wall of the annular groove 37 on the second transmission sleeve 35 will drive the first transmission sleeve 34 to rotate counterclockwise. When the first transmission sleeve 34 rotates counterclockwise, it will similarly drive the auxiliary extension display board 22 to retract through the bevel gear set, transmission screw 311, stroke block 312, stroke bracket 313 and pin 315. At this time, the positional relationship between the auxiliary extension display board 22 and the main display board 21 is as shown in the attached figure. Figure 5 and attached Figure 6 As shown in the image.

[0058] The foregoing has shown and described 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. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable intelligent bulletin board, characterized in that, It includes a support mechanism (1), a publicity board mechanism (2), and a drive mechanism (3), wherein the publicity board mechanism (2) and the drive mechanism (3) are respectively arranged on both sides of the support mechanism (1); The support mechanism (1) includes a support frame (11), which has a U-shaped structure; The advertising board mechanism (2) includes a main advertising board (21) and a secondary extended advertising board (22); The main advertising board (21) is fixedly connected to the support frame (11). A rotating shaft (215) is rotatably inserted into the wall of the main advertising board (21) near the support frame (11). A pressing screw (214) is symmetrically arranged above and below the rotating shaft (215). Both pressing screws (214) are rotatably inserted into the wall of the main advertising board (21). Two secondary extension advertising boards (22) are provided, and the two secondary extension advertising boards (22) are symmetrically arranged at both ends of the main advertising board (21). An extension plate (223) and a connecting plate (224) are fixedly connected to the wall of the two secondary extension advertising boards (22) near the end of the main advertising board (21). A through hole (225) is provided through the wall of the connecting plate (224), and the through hole (225) passes through the secondary extension advertising board (22). A travel pressure plate (226) is fixedly connected to the end of the connecting plate (224) away from the secondary extension advertising board (22). A sliding groove (2261) is provided through the side wall of the travel pressure plate (226), and a limit groove (2262) is provided on the inner wall of the sliding groove (2261). The drive mechanism (3) includes a servo motor (31), which is mounted on the outer wall of the support frame (11) away from the main advertising board (21) via a fixed frame. The output end of the servo motor (31) moves through the support frame (11) and is fixedly connected to the rotating shaft (215) via a coupling. A first transmission sleeve (34) is sleeved on the shaft wall of the rotating shaft (215) via a first one-way bearing (32), and a second transmission sleeve (35) is sleeved on the shaft wall via a second one-way bearing (33). 34) Neither the first transmission sleeve (34) nor the second transmission sleeve (35) is in direct contact with the rotating shaft (215). The first transmission sleeve (34) has a groove (36) at one end near the second transmission sleeve (35). The second transmission sleeve (35) has an annular groove (37) on the outer wall near the first transmission sleeve (34). A spring (38) is sleeved on the outer wall of the annular groove (37). The spring (38) is located inside the groove (36), and the two ends of the spring (38) are fixedly connected to the outer wall of the annular groove (37) and the inner wall of the groove (36), respectively. A first bevel gear (39) is damped and sleeved on the outer wall of the first transmission sleeve (34). A second bevel gear (310) is symmetrically meshed on both sides of the first bevel gear (39). A transmission screw (311) is fixedly inserted at the center of the second bevel gear (310). A stroke block (312) is threaded onto the other end of the transmission screw (311). A stroke bracket (313) is fixedly connected to the stroke block (312). The side of the stroke bracket (313) furthest from the stroke block (312)... A reset groove (314) is provided. A pin (315) is inserted through the side wall of the stroke frame (313) near the stroke block (312). A tension spring (316) is sleeved on the outer wall of one end of the stroke frame (313) through the pin (315). One end of the tension spring (316) is fixedly connected to the inner wall of the stroke frame (313), and the other end of the tension spring (316) is fixedly connected to the connecting plate (224). The pin (315) is movably inserted into the through hole (225) through one end of the tension spring (316). The outer cylinder wall of the second transmission sleeve (35) is damped by a first gear (318). The top and bottom of the first gear (318) are meshed with second gears (319). The two second gears (319) are respectively fixedly sleeved on the rod walls of two pressing screws (214). The rod walls of the two pressing screws (214) located between the main advertising board (21) and the second gear (319) are threaded with internal thread sleeves (320). The internal thread sleeves (320) extend movably into the interior of the slide groove (2261). The inner thread sleeves (320) are fixedly sleeved on the outer cylinder wall inside the slide groove (2261). The limiting sliders (321) are slidably inserted into the interior of the limiting groove (2262). The main advertising board (21) has a stroke groove (211) on the top and bottom side walls near the support frame (11). Both ends of the two stroke frames (313) are provided with stroke sliding ends (317), and the stroke sliding ends (317) are slidably inserted into the interior of the adjacent stroke groove (211). The main advertising board (21) has a first slot (212) and a first groove (213) at both ends near the support frame (11). The two secondary extension advertising boards (22) have a second slot (221) and a second groove (222) on the wall near the end of the main advertising board (21). The second slot (221) is adapted to the first slot (212), and the second groove (222) is adapted to the first groove (213).

2. The adjustable intelligent bulletin board according to claim 1, characterized in that: The support mechanism (1) also includes a support frame (14), and there are two support frames (14), which are symmetrically fixedly connected to both sides of the support frame (11). The end of the transmission screw (311) away from the second bevel gear (310) is rotatably inserted into the adjacent support frame (14), and the transmission screw (311) is rotatably inserted into the end of the support frame (14) away from the support frame (11).

3. The adjustable intelligent bulletin board according to claim 1, characterized in that: The servo motor (31) is electrically connected to an external power supply via a PLC controller.

4. The adjustable intelligent bulletin board according to claim 1, characterized in that: The bottom of the support frame (11) is fixedly connected to a support rod (12), and the bottom of the support rod (12) is fixedly connected to a counterweight base (13).

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