Publicity device with intermittent leaflet switching function for smart city

Abstract

The invention relates to the technical field of propaganda devices, in particular to a propaganda device with an intermittent propaganda page switching function for a smart city. Comprising a supporting frame, a plurality of leaflet supports distributed in a linear array are arranged on the supporting frame, each leaflet support is in a regular triangular prism shape and connected with the supporting frame through a supporting shaft at the bottom, and third bevel gears are installed at the tops of the leaflet supports; the supporting shaft and the third bevel gear are located in the geometric center of the cross section of the leaflet support. A driving mechanism for driving the plurality of leaflet brackets to rotate synchronously is arranged on the supporting frame; according to the propaganda device with the intermittent propaganda page switching function for the smart city, three different propaganda pages can be displayed at intervals, the display space can be saved, meanwhile, attention is attracted, and the propaganda effect is enhanced; a cleaning mechanism is further arranged in the supporting frame, so that the leaflet support is kept clean, and displayed images and texts are clear.

Description

Technical Field

[0001] The present invention relates to the technical field of publicity devices, and in particular to a publicity device for a smart city with a function of intermittently switching publicity pages. Background Art

[0002] Propaganda columns are an effective means of outdoor information dissemination. Traditional propaganda columns generally include a stainless steel frame, a panel made of tempered glass or polycarbonate, and an aluminum alloy ceiling. The panel can be opened to change the propaganda image. This type of propaganda column has a small single propaganda area, requires a large amount of investment in construction, and has a poor propaganda effect.

[0003] Most of the existing flip-type billboards are double-sided billboards, and a driving device is provided to enable the billboards to flip over within a certain period of time, thereby enhancing the publicity effect. However, this type of billboard not only does not contain enough information, but also a large amount of dust will adhere to its surface after being used outdoors for a long time, which will block the publicity pages and affect the appearance. Manual cleaning is required regularly. If the billboard is installed at a high place, scaffolding or slings are required to assist in cleaning, which consumes manpower. Summary of the invention

[0004] The invention aims to solve the problem that after a page-turning publicity board in the prior art is used outdoors for a long time, a large amount of dust will adhere to its surface, which will cover the publicity pages and affect the appearance.

[0005] The present invention provides the following technical solution: a promotional device with an intermittent switching function for a smart city, comprising a support frame, on which a plurality of promotional page holders distributed in a linear array are arranged, the promotional page holders are in the shape of regular triangular prisms, the promotional page holders are connected to the support frame through a support shaft at the bottom, a third bevel gear is installed on the top of the promotional page holder, and the support shaft and the third bevel gear are located at the geometric center of the cross section of the promotional page holder; The support frame is provided with a driving mechanism for driving a plurality of leaflet brackets to rotate synchronously; the driving mechanism comprises a support block, a support plate, a rotating rod, a third motor and a crossbar; the rotating rod is supported by the support block and is rotatably installed vertically in the support frame; the third motor is installed on the support frame, and the output end of the third motor is connected to the rotating rod; The cross bar is rotatably installed horizontally in the support frame, the cross bar is located above the leaflet bracket, and a fourth bevel gear is installed on the cross bar, which meshes with the third bevel gear on the top of the leaflet bracket in a one-to-one correspondence; The support plate is installed in the support frame, and a rotating shaft that can rotate is passed through the support plate. The second bevel gear is fixedly connected to one end of the rotating shaft close to the rotating rod, and the first bevel gear is fixedly connected to the rotating rod, and the first bevel gear is meshed with the second bevel gear; The other end of the rotating shaft is fixedly connected to a guide wheel, and the end of the cross bar close to the support plate is fixedly connected to a triangular limit plate, three guide grooves are opened on the triangular limit plate, and the arc edges between the three guide grooves fit the round edges of the guide wheel, one side of the guide wheel is fixedly connected to a swing rod, one end of the swing rod is fixedly connected to a guide rod, the guide rod is adapted to the guide groove, one side of the guide wheel is provided with a groove, and the swing rod is arranged within the range of the groove; the guide wheel and the triangular limit plate cooperate to form an intermittent mechanism.

[0006] Furthermore, the supporting frame includes a base, a side frame and a top frame. The base, the side frame and the top frame are surrounded on all sides to form a hollow frame, and the promotional leaflet holder is located in the middle of the frame.

[0007] Furthermore, a cleaning mechanism is arranged in the supporting frame, and the cleaning mechanism includes a transverse feeding module, a longitudinal feeding module and a cleaning module; the longitudinal feeding module is installed at the driving end of the transverse feeding module, and the cleaning module is installed at the driving end of the longitudinal feeding module; the transverse feeding module is used to drive the cleaning module to approach or move away from the promotional leaflet bracket; the longitudinal feeding module is used to drive the cleaning module to move along the length direction of the promotional leaflet bracket.

[0008] Furthermore, the lateral feed module includes a first threaded rod, which is rotatably connected to the left and right sides of the base and the top frame, and the first threaded rod is connected to the first motor. A lower movable plate is provided in the base, and an upper movable plate is provided in the top frame. The first threaded rod in the base passes through the lower movable plate and is threadedly engaged with the lower movable plate, and the first threaded rod in the top frame passes through the upper movable plate and is threadedly engaged with the upper movable plate.

[0009] Furthermore, the number and position of the longitudinal feeding modules correspond to the promotional leaflet bracket; the longitudinal feeding module includes a second motor and a fixed plate, the second motor is fixed to the bottom of the upper movable plate, and the fixed plate is fixed to the housing of the second motor; a second threaded rod is rotatably connected between the fixed plate and the lower movable plate, the second threaded rod is connected to the output end of the second motor, a moving block is threadedly connected to the second threaded rod, a sliding sleeve is fixedly connected to the rear side of the moving block, a limiting rod is also fixedly connected between the fixed plate and the lower movable plate, the sliding sleeve is slidably mounted on the limiting rod, and the cleaning module is installed on the moving block.

[0010] Further, the cleaning module includes an articulated rod, the left and right sides of the moving block are articulated with articulated rods, the front ends of the two articulated rods are articulated with articulated blocks, the two articulated blocks are respectively fixedly connected with a first laminating plate and a second laminating plate, the left and right sides of the moving block are fixedly connected with side plates, and a spring is connected between the side plates and the articulated rods; The bottom of the first laminating plate is fixedly connected with a nozzle, one side of the nozzle is fixedly connected with a plurality of nozzles, one side of the nozzle is fixedly connected with a scraper, the bottom of the second laminating plate is fixedly connected with a limiting frame, the limiting frame is rotatably connected with a connecting rod, and the connecting rod is connected with a cleaning brush.

[0011] Furthermore, the rear end of the connecting rod is fixedly connected to a rubber wheel, the front side of the fixed plate is fixedly connected to a connecting plate, the bottom of the connecting plate is fixedly connected to a vertical plate, one side of the vertical plate is fixedly connected to an anti-slip plate, and the rubber wheel is in rolling contact with the anti-slip plate.

[0012] Furthermore, a sliding plate is fixedly connected to the rear side of the side plate, a rear baffle is fixedly connected between the rear sides of the left and right side frames, a through slot is provided on the rear baffle, and the sliding plate passes through the through slot and is in sliding contact with the through slot.

[0013] Furthermore, a guide rail is fixedly connected to the side frame, a water tank is slidably connected between the left and right guide rails, the sliding plate is fixedly connected to the water tank, a water pipe is connected to the nozzle, and the water pipe passes through the through groove and is connected to a water pump in the water tank.

[0014] Furthermore, a partition is fixedly connected to the inner side of the side frame.

[0015] Compared with the prior art, the advantages of the present invention are: 1. When the guide wheel drives the swing rod and the guide rod to rotate to one side of the triangular limit plate, the guide rod slides into the guide groove, and at the same time, the groove of the guide wheel just rotates to one side of the triangular limit plate. At this time, the triangular limit plate loses its limit. When the guide rod rotates, it drives the triangular limit plate to rotate and drives the cross bar to rotate. When the cross bar rotates, it drives multiple fourth bevel gears to rotate. The fourth bevel gear meshes with the third bevel gear to rotate the third bevel gear, thereby driving multiple promotional page holders to rotate synchronously. Multiple promotional page holders rotate to the next side at the same time, and three different promotional pages can be displayed at intervals, which is conducive to saving display space, while attracting attention and enhancing the promotional effect.

[0016] 2. The spring causes the hinged rods on both sides to contract inward, and drives the first bonding plate and the second bonding plate to bond with the two rear sides of the promotional leaflet holder. The water pump starts to transmit the water inside the water tank through the water pipe to the inside of the nozzle, and sprays it out from the inside of multiple nozzles to clean the surface of the promotional leaflet holder. Then the second motor is started, and the second motor drives the second threaded rod to rotate. When the second threaded rod rotates, the moving block moves up and down. When the moving block moves, it drives the hinged rod to move, and then drives the first bonding plate to move. When the first bonding plate moves, it drives the nozzle to move, so that the nozzle sprays from top to bottom on one side of the promotional leaflet holder. At the same time, the scraper is used to remove dust and impurities on this side of the promotional leaflet holder, and the water droplets are also removed to keep the promotional leaflet holder beautiful and enhance the promotional effect.

[0017] 3. When the cleaning brush contacts the leaflet holder, it moves and rotates to clean the dust on the surface of the leaflet holder to prevent stains from adhering and improve the cleaning effect. The first motor is started in reverse to separate the hinged rod from the leaflet holder. After the leaflet holder is flipped over, it is cleaned again. Repeat the cleaning steps to clean all three sides of the leaflet holder. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front perspective view of the present invention; Figure 2 It is a back perspective view of the present invention; Figure 3 It is a partial cross-sectional view of the present invention; Figure 4 is a schematic diagram of the structure of the rotating rod; Figure 5 for Figure 4 A magnified view of the structure of part A; Figure 6 is a schematic diagram of the structure of the guide wheel; Figure 7 It is a structural schematic diagram of the promotional page bracket; Figure 8 It is a structural schematic diagram of the transverse feed module; Fig. 9 It is a structural schematic diagram of the longitudinal feeding module; Fig.10 Schematic diagram of the cleaning module Figure 1 ; Fig.11 Schematic diagram of the cleaning module Figure 2 ; Fig.12 It is a schematic diagram of the structure of the nozzle; Fig.13 It is a structural schematic diagram of the limit frame; Fig.14 It is a structural schematic diagram of the anti-skid plate.

[0019] In the figure: 1-base; 2-side frame; 3-top frame; 4-leaf support; 5-support block; 6-rotating rod; 7-support plate; 8-rotating shaft; 9-first bevel gear; 10-guide wheel; 11-rocker; 12-guide rod; 13-cross bar; 14-triangular limit plate; 15-guide groove; 16-second bevel gear; 17-third bevel gear; 18-fourth bevel gear; 19-first motor; 20-first threaded rod; 21-upper moving plate; 22-lower moving plate; 23-fixed plate; 24-second threaded rod; 25-moving block; 26-hinged rod ; 27-hinge block; 28-first laminating plate; 29-second laminating plate; 30-side plate; 31-spring; 32-sprinkler; 33-nozzle; 34-water pipe; 35-limiting frame; 36-cleaning brush; 37-rubber wheel; 38-connecting rod; 39-scraper; 40-vertical plate; 41-anti-skid plate; 42-connecting plate; 43-second motor; 44-limiting rod; 45-sleeve; 46-sliding plate; 47-water tank; 48-guide rail; 49-rear baffle; 50-through slot; 51-third motor; 52-partition; 53-support shaft. DETAILED DESCRIPTION

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] like Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown: A promotional device for a smart city with an intermittent switching function of promotional pages, including a support frame, on which are arranged a plurality of promotional page holders 4 distributed in a linear array, the promotional page holders 4 are in the shape of a regular triangular prism, the promotional page holders 4 are connected to the support frame through a support shaft 53 at the bottom, the promotional page holders 4 can rotate freely, and a third bevel gear 17 is installed on the top of the promotional page holder 4, the support shaft 53 and the third bevel gear 17 are located at the geometric center of the cross section of the promotional page holder 4.

[0022] like Figure 1 As shown, the support frame includes a base 1, a side frame 2 and a top frame 3. The base 1, the side frame 2 and the top frame 3 are surrounded on four sides to form a hollow frame, and the leaflet holder 4 is located in the middle of the frame. A partition 52 is fixedly connected to the inner side of the side frame 2, and the partition 52 protects the leaflet holder 4.

[0023] The support frame is provided with a driving mechanism for driving several leaflet brackets 4 to rotate synchronously; the driving mechanism includes a support block 5, a support plate 7, a rotating rod 6, a third motor 51 and a cross bar 13; the rotating rod 6 is supported by the support block 5 and is rotatably installed vertically in the support frame; the third motor 51 is installed on the support frame, and the output end of the third motor 51 is connected to the rotating rod 6; the third motor 51 drives the rotating rod 6 to rotate.

[0024] The cross bar 13 is rotatably installed horizontally in the support frame. The cross bar 13 is located above the leaflet bracket 4. A fourth bevel gear 18 is installed on the cross bar 13, which meshes with the third bevel gear 17 on the top of the leaflet bracket 4 in a one-to-one manner. When the cross bar 13 rotates, the fourth bevel gear 18 meshes with the third bevel gear 17 to drive the leaflet bracket 4 to rotate.

[0025] The support plate 7 is installed in the supporting frame, and a rotatable shaft 8 is passed through the support plate 7. The end of the shaft 8 close to the rotating rod 6 is fixedly connected to the second bevel gear 16, and the rotating rod 6 is fixedly connected to the first bevel gear 9, and the first bevel gear 9 is meshed with the second bevel gear 16; when the rotating rod 6 rotates, the first bevel gear 9 is meshed with the second bevel gear 16 to drive the shaft 8 to rotate.

[0026] The other end of the rotating shaft 8 is fixedly connected to a guide wheel 10, and the end of the cross bar 13 close to the support plate 7 is fixedly connected to a triangular limit plate 14, and three guide grooves 15 are opened on the triangular limit plate 14, and the spacing between the three guide grooves 15 is equal, and the arc edges between the three guide grooves 15 are in contact with the round edges of the guide wheel 10, and a swing rod 11 is fixedly connected to one side of the guide wheel 10, and one end of the swing rod 11 is fixedly connected to a guide rod 12, and the guide rod 12 is adapted to the guide groove 15. A groove is provided on one side of the guide wheel 10, and the swing rod 11 is arranged within the range of the groove; the guide wheel 10 and the triangular limit plate 14 cooperate to form an intermittent mechanism.

[0027] The three surfaces of the leaflet bracket 4 are provided with card slots, and the leaflet is installed inside the card slots by bolts or buckles, and the rotating rod 6 is driven to rotate by the third motor 51. When the rotating rod 6 rotates, it drives the first bevel gear 9 to rotate, so that the first bevel gear 9 drives the second bevel gear 16 to rotate, thereby driving the rotating shaft 8 to rotate. When the rotating shaft 8 rotates, the round edge of the guide wheel 10 fits with the arc edge of the triangular limit plate 14, so that the guide wheel 10 limits the triangular limit plate 14, thereby ensuring that the triangular limit plate 14 does not rotate. When the guide wheel 10 drives the swing rod 11 and the guide rod 12 to rotate to one side of the triangular limit plate 14, the guide rod 12 slides into the triangular limit plate 14, and the groove of the guide wheel 10 just rotates to one side of the triangular limit plate 14. At this time, the triangular limit plate 14 loses its limit. When the guide rod 12 rotates, it drives the triangular limit plate 14 to rotate, and the cross bar 13 rotates with the triangular limit plate 14. When the cross bar 13 rotates, it drives the fourth bevel gear 18 to rotate. The fourth bevel gear 18 meshes with the third bevel gear 17 to rotate the third bevel gear 17, thereby driving multiple promotional page brackets 4 to rotate synchronously. Multiple promotional page brackets 4 rotate to the next side at the same time, and three different promotional pages can be displayed at intervals, which is beneficial to saving display space, while attracting attention and enhancing the promotional effect.

[0028] A cleaning mechanism is arranged in the supporting frame, and the cleaning mechanism includes a transverse feeding module, a longitudinal feeding module and a cleaning module; the longitudinal feeding module is installed at the driving end of the transverse feeding module, and the cleaning module is installed at the driving end of the longitudinal feeding module; the transverse feeding module is used to drive the cleaning module to approach or move away from the leaflet bracket 4; the longitudinal feeding module is used to drive the cleaning module to move along the length direction of the leaflet bracket 4.

[0029] like Figure 3 , Figure 8 As shown: the lateral feed module includes a first threaded rod 20, and the first threaded rod 20 is rotatably connected on both sides of the base 1 and the top frame 3. The first threaded rod 20 is connected to the first motor 19, and the first motor 19 is used to drive the first threaded rod 20 to rotate. A lower movable plate 22 is provided in the base 1, and an upper movable plate 21 is provided in the top frame 3. The first threaded rod 20 in the base 1 passes through the lower movable plate 22 and is threadedly screwed with the lower movable plate 22, and the first threaded rod 20 in the top frame 3 passes through the upper movable plate 21 and is threadedly screwed with the upper movable plate 21; when the first threaded rod 20 in the base 1 and the top frame 3 rotate synchronously, the upper movable plate 21 and the lower movable plate 22 move forward and backward relative to the leaflet bracket 4, so that the cleaning module approaches or moves away from the leaflet bracket 4, and the cleaning module will not hinder the rotation of the leaflet bracket 4.

[0030] like Figure 3 , Fig. 9As shown: the number and position of the longitudinal feeding modules correspond to the leaflet bracket 4; the longitudinal feeding module includes a second motor 43 and a fixed plate 23, the second motor 43 is fixed at the bottom of the upper movable plate 21, and the fixed plate 23 is fixed on the housing of the second motor 43; a second threaded rod 24 is rotatably connected between the fixed plate 23 and the lower movable plate 22, the second threaded rod 24 is connected to the output end of the second motor 43, the second motor 43 is used to drive the second threaded rod 24 to rotate, a moving block 25 is threadedly connected on the second threaded rod 24, a sliding sleeve 45 is fixedly connected to the rear side of the moving block 25, a limiting rod 44 is also fixedly connected between the fixed plate 23 and the lower movable plate 22, the sliding sleeve 45 is slidably sleeved on the limiting rod 44, and the cleaning module is installed on the moving block 25; the sliding sleeve 45 and the limiting rod 44 slidably cooperate to limit the rotation of the moving block 25, so that when the second threaded rod 24 rotates, the sliding sleeve 45 moves up and down with the cleaning module.

[0031] like Fig.10 , Fig.11 , Fig.12 As shown: the cleaning module includes an articulated rod 26, and the left and right sides of the moving block 25 are hinged with articulated rods 26. The two articulated rods 26 on the moving block 25 are in an open state toward the leaflet bracket 4. The front ends of the two articulated rods 26 are articulated with articulated blocks 27. The two articulated blocks 27 are respectively fixedly connected with a first bonding plate 28 and a second bonding plate 29. The left and right sides of the moving block 25 are respectively fixedly connected with side plates 30. A spring 31 is connected between the side plate 30 and the articulated rod 26; the spring 31 applies a thrust to the articulated rod 26, so that the two articulated rods 26 have a tendency to close, and the two articulated rods 26 respectively press the first bonding plate 28 and the second bonding plate 29, so that the first bonding plate 28 and the second bonding plate 29 can be in close contact with the surface of the leaflet bracket 4.

[0032] A nozzle 32 is fixedly connected to the bottom of the first laminating plate 28, a plurality of nozzles 33 are fixedly connected to one side of the nozzle 32, a scraper 39 is fixedly connected to the top of the nozzle 32, a limiting frame 35 is fixedly connected to the bottom of the second laminating plate 29, a connecting rod 38 is rotatably connected to the limiting frame 35, and a cleaning brush 36 is connected to the connecting rod 38; the surface of the leaflet holder 4 is sprayed by the nozzle 32 on the first laminating plate 28, and the scraper 39 scrapes off excess water droplets; the surface of the leaflet holder 4 is brushed by the cleaning brush 36 on the second laminating plate 29; after the leaflet holder 4 rotates, each surface can be sprayed and brushed in place.

[0033] like Fig.13 , Fig.14As shown, the rear end of the connecting rod 38 is fixedly connected to a rubber wheel 37, the front side of the fixing plate 23 is fixedly connected to a connecting plate 42, the bottom of the connecting plate 42 is fixedly connected to a vertical plate 40, one side of the vertical plate 40 is fixedly connected to an anti-slip plate 41, and the rubber wheel 37 is in rolling contact with the anti-slip plate 41. When the connecting rod 38 moves up and down, the rubber wheel 37 rolls on the anti-slip plate 41, thereby driving the cleaning brush 36 to rotate.

[0034] like Figure 2 As shown: a sliding plate 46 is fixedly connected to the rear side of the side plate 30, a rear baffle 49 is fixedly connected between the rear sides of the left and right side frames 2, a through slot 50 is opened on the rear baffle 49, and the sliding plate 46 passes through the through slot 50 and is in sliding contact with the through slot 50.

[0035] like Figure 8 As shown: a guide rail 48 is fixedly connected to the side frame 2, a water tank 47 is slidably connected between the left and right guide rails 48, a sliding plate 46 is fixedly connected to the water tank 47, a water pipe 34 is connected to the nozzle 32, and the water pipe 34 passes through the through groove 50 and is connected to the water pump in the water tank 47; the water pump pumps the water in the water tank 47 to the nozzle 32 through the water pipe 34.

[0036] After the first motor 19 is started, it drives the first threaded rod 20 to rotate, thereby driving the upper moving plate 21 and the lower moving plate 22 to move forward, and then the cleaning module moves forward as a whole, until the first bonding plate 28 and the second bonding plate 29 on the cleaning module as a whole move to the two sides of the leaflet bracket 4, and the hinge rod 26 is pressed by the spring 31 to make the hinge rod 26 on both sides shrink inward, driving the first bonding plate 28 and the second bonding plate 29 to fit with the two sides of the rear side of the leaflet bracket 4, and the water pump is started to transmit the water in the water tank 47 to the nozzle 32 through the water pipe 34, and then the water from the multiple nozzles is sprayed. The nozzle 33 sprays out to clean the surface of the leaflet holder 4, and then the second motor 43 is started, and the second motor 43 drives the second threaded rod 24 to rotate, and the second threaded rod 24 drives the moving block 25 to move up and down. When the moving block 25 moves, it drives the hinged rod 26 to move, and then drives the first bonding plate 28 to move. When the first bonding plate 28 moves, the nozzle 32 sprays from top to bottom on one side of the leaflet holder 4, and at the same time cooperates with the scraper 39 to remove dust and impurities on this side of the leaflet holder 4, and also removes water droplets, so that the leaflet holder 4 remains beautiful and enhances the publicity effect.

[0037] When the second laminating plate 29 is in contact with the side of the leaflet holder 4, the movable block 25 drives the second laminating plate 29 to descend when it descends, and the second laminating plate 29 drives the limiting frame 35 and the cleaning brush 36 to be in contact with the leaflet holder 4. At the same time, the rubber wheel 37 is in contact with the anti-slip plate 41. When the cleaning brush 36 descends, the friction between the anti-slip plate 41 and the rubber wheel 37 causes the rubber wheel 37 to rotate, and the rubber wheel 37 drives the cleaning brush 36 to rotate. When the cleaning brush 36 contacts the leaflet holder 4, it moves and rotates to clean the dust on the surface of the leaflet holder 4 to prevent stains from sticking and improve the cleaning effect.

[0038] The first motor 19 is started in reverse to move the hinge rod 26 away from the leaflet support 4. After the leaflet support 4 is turned over, it is cleaned again. The cleaning steps are repeated to clean all three surfaces of the leaflet support 4.

[0039] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A promotional device for a smart city with a function of intermittently switching promotional pages, characterized in that: The invention comprises a support frame, on which a plurality of leaflet brackets (4) distributed in a linear array are arranged, the leaflet brackets (4) are in the shape of a regular triangular prism, the leaflet brackets (4) are connected to the support frame via a support shaft (53) at the bottom, a third bevel gear (17) is installed at the top of the leaflet bracket (4), and the support shaft (53) and the third bevel gear (17) are located at the geometric center of the cross section of the leaflet bracket (4); The support frame is provided with a driving mechanism for driving a plurality of leaflet brackets (4) to rotate synchronously; the driving mechanism comprises a support block (5), a support plate (7), a rotating rod (6), a third motor (51) and a crossbar (13); the rotating rod (6) is supported by the support block (5) and is rotatably installed vertically in the support frame; the third motor (51) is installed on the support frame, and an output end of the third motor (51) is connected to the rotating rod (6); The cross bar (13) is rotatably mounted horizontally in the support frame, the cross bar (13) is located above the leaflet bracket (4), and a fourth bevel gear (18) is mounted on the cross bar (13) and meshes with the third bevel gear (17) at the top of the leaflet bracket (4) in a one-to-one correspondence; The support plate (7) is installed in the support frame, and a rotatable rotating shaft (8) is passed through the support plate (7). The end of the rotating shaft (8) close to the rotating rod (6) is fixedly connected to the second bevel gear (16), and the rotating rod (6) is fixedly connected to the first bevel gear (9), and the first bevel gear (9) is meshed with the second bevel gear (16); The other end of the rotating shaft (8) is fixedly connected to a guide wheel (10), and one end of the cross bar (13) close to the support plate (7) is fixedly connected to a triangular limit plate (14). Three guide grooves (15) are provided on the triangular limit plate (14). The arc edges between the three guide grooves (15) fit the round edge of the guide wheel (10). One side of the guide wheel (10) is fixedly connected to a swing rod (11). One end of the swing rod (11) is fixedly connected to a guide rod (12). The guide rod (12) is matched with the guide groove (15). One side of the guide wheel (10) is provided with a groove. The swing rod (11) is arranged within the range of the groove. The guide wheel (10) cooperates with the triangular limit plate (14) to form an intermittent mechanism.

2. A promotional device for a smart city with a function of intermittently switching promotional pages according to claim 1, characterized in that: The support frame comprises a base (1), a side frame (2) and a top frame (3); the base (1), the side frame (2) and the top frame (3) are surrounded on four sides to form a hollow frame, and the leaflet bracket (4) is located in the middle of the frame.

3. A promotional device for a smart city with a function of intermittently switching promotional pages according to claim 2, characterized in that: A cleaning mechanism is arranged in the support frame, and the cleaning mechanism comprises a transverse feeding module, a longitudinal feeding module and a cleaning module; the longitudinal feeding module is mounted on the driving end of the transverse feeding module, and the cleaning module is mounted on the driving end of the longitudinal feeding module; the transverse feeding module is used to drive the cleaning module to approach or move away from the leaflet support (4); and the longitudinal feeding module is used to drive the cleaning module to move along the length direction of the leaflet support (4).

4. The promotional device for a smart city with a function of intermittently switching promotional pages according to claim 3, characterized in that: The transverse feed module comprises a first threaded rod (20), the first threaded rod (20) being rotatably connected to both left and right sides of the base (1) and the top frame (3), the first threaded rod (20) being connected to a first motor (19), a lower movable plate (22) being arranged in the base (1), an upper movable plate (21) being arranged in the top frame (3), the first threaded rod (20) in the base (1) passing through the lower movable plate (22) and being threadedly engaged with the lower movable plate (22), and the first threaded rod (20) in the top frame (3) passing through the upper movable plate (21) and being threadedly engaged with the upper movable plate (21).

5. The promotional device for a smart city with a function of intermittently switching promotional pages according to claim 4, characterized in that: The number and position of the longitudinal feeding modules correspond to the leaflet bracket (4); the longitudinal feeding module comprises a second motor (43) and a fixed plate (23); the second motor (43) is fixed to the bottom of the upper movable plate (21); the fixed plate (23) is fixed to the housing of the second motor (43); a second threaded rod (24) is rotatably connected between the fixed plate (23) and the lower movable plate (22); the second threaded rod (24) is connected to the output end of the second motor (43); a moving block (25) is threadedly connected to the second threaded rod (24); a sliding sleeve (45) is fixedly connected to the rear side of the moving block (25); a limiting rod (44) is also fixedly connected between the fixed plate (23) and the lower movable plate (22); the sliding sleeve (45) is slidably sleeved on the limiting rod (44); and the cleaning module is mounted on the moving block (25).

6. The promotional device for a smart city with a function of intermittently switching promotional pages according to claim 5, characterized in that: The cleaning module comprises a hinged rod (26), the left and right sides of the moving block (25) are hingedly connected to the hinged rods (26), the front ends of the two hinged rods (26) are hingedly connected to hinged blocks (27), the two hinged blocks (27) are respectively fixedly connected to a first laminating plate (28) and a second laminating plate (29), the left and right sides of the moving block (25) are fixedly connected to side plates (30), and a spring (31) is connected between the side plates (30) and the hinged rods (26); A nozzle (32) is fixedly connected to the bottom of the first laminating plate (28), a plurality of nozzles (33) are fixedly connected to one side of the nozzle (32), a scraper (39) is fixedly connected to one side of the nozzle (32), and a limiting frame (35) is fixedly connected to the bottom of the second laminating plate (29), a connecting rod (38) is rotatably connected to the limiting frame (35), and a cleaning brush (36) is connected to the connecting rod (38).

7. A promotional device for a smart city with a function of intermittently switching promotional pages according to claim 6, characterized in that: The rear end of the connecting rod (38) is fixedly connected to a rubber wheel (37), the front side of the fixing plate (23) is fixedly connected to a connecting plate (42), the bottom of the connecting plate (42) is fixedly connected to a vertical plate (40), one side of the vertical plate (40) is fixedly connected to an anti-slip plate (41), and the rubber wheel (37) is in rolling contact with the anti-slip plate (41).

8. The promotional device for a smart city with a function of intermittently switching promotional pages according to claim 6, characterized in that: A sliding plate (46) is fixedly connected to the rear side of the side plate (30), and a rear baffle (49) is fixedly connected between the rear sides of the left and right side frames (2). A through slot (50) is formed on the rear baffle (49), and the sliding plate (46) passes through the through slot (50) and is in sliding contact with the through slot (50).

9. The promotional device for a smart city with a function of intermittently switching promotional pages according to claim 8, characterized in that: The side frame (2) is fixedly connected to a guide rail (48), a water tank (47) is slidably connected between the left and right guide rails (48), the sliding plate (46) is fixedly connected to the water tank (47), the nozzle (32) is connected to a water pipe (34), and the water pipe (34) passes through a through groove (50) and is connected to a water pump in the water tank (47).

10. The promotional device for a smart city with a function of intermittently switching promotional pages according to claim 2, characterized in that: A partition plate (52) is fixedly connected to the inner side of the side frame (2).

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