A smart education campus projection device

Abstract

The present invention belongs to the field of electronic teaching equipment, and specifically relates to a smart education campus projection equipment; it comprises a projection equipment screen structure, and the projection equipment screen structure comprises an equipment shell, a screen, a forward and reverse motor and a winding frame; an auxiliary unfolding structure is arranged inside the equipment shell, and the auxiliary unfolding structure comprises two transmission shafts one arranged on both sides of the screen, and the two transmission shafts one are both rotatably installed inside the equipment shell, and the outer sides of the two transmission shafts one are fixedly sleeved with rubber friction rollers, and the outer curved surfaces of the rubber friction rollers are in contact with the screen wiring; when the winding frame reverses and unwinds the screen, the rotation force driving the winding frame, after being transmitted by the transmission component and two transmission gears one, causes the two rubber friction rollers in contact with the screen wiring on the outer sides to apply downward force to the screen from both sides of the screen, and the two rubber friction rollers rotating synchronously with the winding frame apply a downward force to the screen, thereby ensuring that the screen can be stably unfolded and applying a stable force to the screen.

Description

Technical Field

[0001] The present invention belongs to the field of electronic teaching equipment, and in particular relates to a smart education campus projection device. Background Art

[0002] A smart campus is a learning environment that aims to promote the integration of information technology with education and teaching, and to improve the effectiveness of learning and teaching. It uses new technologies such as the Internet of Things, cloud computing, and big data analysis as core technologies to provide an integrated teaching service that is fully aware of the environment, intelligent, data-based, networked, and collaborative. It can also provide insight into and predict education and teaching, as well as education management. In the construction of a smart campus, projection equipment is one of the necessary teaching equipment.

[0003] However, during the use of the projection screen of the existing projection equipment, due to the limited weight of the projection screen, the two layers of the rolled-up projection screen may spread out during the unrolling process, and the bottom of the projection screen may move down slowly or even not move down. The user needs to pull the bottom of the screen by hand to unfold the screen and put it into use. However, the force applied by the user is likely to be too large, which may easily cause damage to the equipment. Summary of the invention

[0004] An object of the present invention is to solve at least the above problems and to provide at least the advantages which will be described hereinafter.

[0005] The present invention provides the following technical solution: a smart education campus projection device, including a projection device screen structure, the projection device screen structure includes a device shell, a screen, a forward and reverse motor and a winding rack; an auxiliary unfolding structure is arranged inside the device shell, the auxiliary unfolding structure includes two transmission shafts 1 arranged on both sides of the screen, the two transmission shafts 1 are rotatably installed inside the device shell, the outer sides of the two transmission shafts 1 are fixedly sleeved with rubber friction rollers, and the two rubber friction rollers are respectively arranged on both sides of the screen; the outer curved surface of the rubber friction roller is in contact with the screen wiring, the outer sides of the two transmission shafts 1 are fixedly sleeved with transmission gears 1, the transmission gears 1 on the two transmission shafts 1 are meshed with each other, and a transmission component is arranged between one of the transmission shafts 1 and the winding rack.

[0006] Furthermore, the tops of the two transmission gears 1 are meshed with transmission gears 2 on one side away from the curtain, the two transmission gears 2 are fixedly embedded with magnets 2, the two magnets 2 are rotatably connected with transmission shafts 2 inside, the outer sides of the two transmission shafts 2 are fixedly connected with cleaning plates at positions close to the curtain, a rubber piece 1 is arranged on the top of one of the cleaning plates, and an auxiliary cleaning structure is arranged on one side of the other cleaning plate;

[0007] The auxiliary cleaning structure is located on the top of the cleaning plate, and includes a diverter box 1, a rubber cross plate and a diverter box 2 which are arranged in sequence from bottom to top, and an auxiliary cooperative component is arranged between the diverter box 2 and the diverter box 1.

[0008] Furthermore, the winding frame is rotatably installed inside the equipment casing, the casing of the forward and reverse motor is fixedly connected to the inside of the equipment casing, the output end of the forward and reverse motor is fixedly connected to the winding frame, one end of the curtain is wound on the winding frame, and the other end of the curtain passes through the bottom of the equipment casing.

[0009] Furthermore, the transmission assembly includes a chain, and sprocket 1 and sprocket 2 are meshed inside the chain. Sprocket 1 is fixedly sleeved on the output end of the forward and reverse motors, and sprocket 2 is fixedly sleeved on transmission shaft 1.

[0010] Furthermore, two cleaning plates are symmetrically arranged on both sides of the curtain, and the two cleaning plates can be tilted downward, with the lower ends contacting the curtain, and the bottoms of the cleaning plates are in contact with the rubber friction roller.

[0011] Furthermore, two fixed plates 1 are provided on the outer side of the transmission shaft 2, the fixed plate 1 is fixedly connected to the equipment housing, a mounting sleeve is fixedly connected between the two fixed plates 1, the mounting sleeve is rotatably sleeved on the outer side of the magnet component 2, two fixed plates 2 are fixedly connected between the two fixed plates 1, the magnet component 1 is fixedly connected between the two fixed plates 2, and the transmission shaft 2 passes through the magnet component 1.

[0012] Furthermore, one end of the magnet component 1 is rotatably sleeved on the outside of an adjacent transmission shaft 1, and the top of the magnet component 1 away from the auxiliary cleaning structure is fixedly connected to a fixing plate 3, and one side of the fixing plate 3 is fixedly connected to a fixing rod 1, which penetrates a rubber component 1 and is fixedly connected to the rubber component 1, and the rubber component 1 is located on the top of the cleaning plate on the same side.

[0013] Furthermore, an atomizing nozzle is fixedly connected to one side of the diverter box one, a rubber ball is fixedly connected to the bottom of the diverter box one, the rubber ball is located on the top of the cleaning plate on the same side, a guide pipe fitting 2 is fixedly connected to the top of the diverter box one, a water pump is fixedly connected to one side of the guide pipe fitting 2, a liquid storage tank is fixedly connected to one side of the water pump, the liquid storage tank is fixedly installed inside the equipment casing, a controller is fixedly connected to the top of the liquid storage tank, and a plurality of fixed bent plates 1 are fixedly connected between the diverter box one and the liquid storage tank.

[0014] Furthermore, a fixed bent plate three is fixedly connected between the rubber cross plate and the diversion box one, the fixed bent plate three is arranged in an L shape, a gas nozzle is fixedly connected to one side of the diversion box two, and a fixed bent plate two is fixedly connected between the top of the diversion box two and the liquid storage tank.

[0015] Furthermore, the auxiliary cooperative component includes an air pump, a guide pipe member three and a guide pipe member one. The guide pipe member one is fixedly connected between the water inlet of the water pump and the liquid storage tank. One end of the guide pipe member three is fixedly connected to the guide pipe member four. The air pump is fixedly connected to the bottom of the liquid storage tank. The output end of the air pump is fixedly connected to the guide pipe member six. The adjacent ends of the guide pipe member six and the guide pipe member four are both connected to the guide pipe member five. An electric heater is fixedly connected between the two guide pipe members five. The electric heater is a hollow tube body. The two guide pipe members five are connected through the electric heater. The electric heater passes through the guide pipe member one and is fixedly connected to the guide pipe member one.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] 1. For the smart education campus projection equipment, when the reel-up frame unwinds the screen in reverse, the rotational force driving the reel-up frame is transmitted through the transmission assembly and two transmission gears, and then two rubber friction rollers in contact with the screen wiring on the outside exert downward force on the screen from both sides of the screen, so as to ensure that the screen can be stably unfolded, avoid damage to the screen structure of the projection equipment caused by the staff pulling the screen by hand, and ensure the service life of the screen; similarly, when the reel-up frame rewinds the screen in forward rotation, the two rubber friction rollers exert upward force on the screen, and the two rubber friction rollers play the role of smoothing the screen.

[0018] 2. In the smart education campus projection equipment, the second magnet part always applies a force to the second transmission shaft when it rotates, and the cleaning plate is always supported by the force, so that the cleaning plate always keeps in contact with the screen during the rolling process of the screen. The cleaning plate smoothes and cleans the screen to ensure the cleanliness of the outside of the screen, reduce the sticky garbage on the surface of the screen after the screen is rolled up, and extend the service life of the screen.

[0019] 3. In the smart education campus projection equipment, the water pump conveys the cleaning liquid into the inside of the diverter box 1 through the guide pipe 2. After the pressure inside the diverter box 1 increases, the cleaning liquid is atomized by multiple atomizing nozzles and then sprayed out. The atomizing nozzles spray the cleaning liquid onto the screen to rinse the screen, thereby improving the cleaning effect of the cleaning plate on the screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the external structure of the projection equipment screen structure;

[0021] Figure 2 It is a schematic diagram of the forward and reverse motors and the winding frame;

[0022] Figure 3 is a schematic diagram of the structure of the transmission component;

[0023] Figure 4 It is a transmission schematic diagram between the transmission shaft 1 and the transmission shaft 2;

[0024] Figure 5It is a transmission schematic diagram between transmission shafts one;

[0025] Figure 6 A schematic diagram of the auxiliary cleaning structure;

[0026] Figure 7 for Figure 6 Enlarged view of point C in the middle;

[0027] Figure 8 is a schematic diagram of a rubber ball;

[0028] Fig. 9 is a schematic diagram of a flow guide pipe component 1;

[0029] Fig.10 is a schematic diagram of a flow guide pipe component 5;

[0030] Fig.11 It is a schematic diagram of the flow guide pipe component 5 and the electric heating component.

[0031] In the figure: 1-projection equipment screen structure; 11-equipment housing; 12-screen; 13-forward and reverse motor; 14-rolling frame; 2-auxiliary unfolding structure; 21-sprocket wheel one; 22-chain; 23-sprocket wheel two; 24-drive shaft one; 25-drive gear one; 26-rubber friction roller; 27-drive shaft two; 28-fixing plate one; 29-fixing plate two; 210-magnet piece one; 211-fixing plate three; 212-fixing rod one; 213-rubber piece one; 214-cleaning plate; 215-installation sleeve; 216-magnet piece two; 217-drive gear two ;218-annular groove;3-auxiliary cleaning structure;31-liquid storage tank;32-controller;33-guiding pipe fitting 1;34-water pump;35-guiding pipe fitting 2;36-diverter box 1;37-atomizing nozzle;38-rubber ball;39-fixed bent plate 1;310-diverter box 2;311-fixed bent plate 2;312-gas nozzle;313-guiding pipe fitting 3;314-guiding pipe fitting 4;315-guiding pipe fitting 5;316-electric heating element;317-guiding pipe fitting 6;318-air pump;319-fixed bent plate 3;320-rubber cross plate. DETAILED DESCRIPTION

[0032] 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.

[0033] like Figure 1~Figure 5As shown, a smart education campus projection device includes a projection device screen structure 1, which includes a device housing 11, a screen 12, a forward and reverse motor 13 and a winding frame 14; an auxiliary unfolding structure 2 is arranged inside the device housing 11, and the auxiliary unfolding structure 2 includes two transmission shafts 24 arranged on both sides of the screen 12, and the two transmission shafts 24 are rotatably installed inside the device housing 11, and the outer sides of the two transmission shafts 24 are fixedly sleeved with rubber friction rollers 26, and the two rubber friction rollers 26 are respectively arranged on both sides of the screen 12; the outer curved surface of the rubber friction roller 26 is in line contact with the screen 12, and the outer sides of the two transmission shafts 24 are fixedly sleeved with transmission gears 25, and the transmission gears 25 on the two transmission shafts 24 are meshed with each other, and a transmission component is arranged between one of the transmission shafts 24 and the winding frame 14.

[0034] like Figure 4~Figure 7 As shown, the top of the two transmission gears 1 25 is meshed with a transmission gear 2 217 on one side away from the curtain 12, the two transmission gears 2 217 are fixedly embedded with a magnet piece 216, the two magnet pieces 216 are rotatably connected with a transmission shaft 27, the outside of the two transmission shafts 27 near the curtain 12 are fixedly connected with a cleaning plate 214, the top of one of the cleaning plates 214 is provided with a rubber piece 1 213, and one side of the other cleaning plate 214 is provided with an auxiliary cleaning structure 3. The auxiliary cleaning structure 3 is located on the top of the cleaning plate 214, and the auxiliary cleaning structure 3 includes a diverter box 1 36, a rubber cross plate 320 and a diverter box 2 310 arranged in sequence from bottom to top, and an auxiliary coordination component is arranged between the diverter box 2 310 and the diverter box 1 36.

[0035] The reel 14 is rotatably mounted inside the device housing 11, the housing of the forward and reverse motor 13 is fixedly connected to the inside of the device housing 11, the output end of the forward and reverse motor 13 is fixedly connected to the reel 14, one end of the curtain 12 is wound on the reel 14, and the other end of the curtain 12 passes through the bottom of the device housing 11. When the forward and reverse motor 13 works forward and reverse, it drives the reel 14 to rotate forward or reverse, and the reel 14 reels or unwinds the curtain 12 during the rotation of the forward or reverse reel 14, so as to control the unfolded length of the curtain 12, and the curtain 12 can be rolled up or unfolded for use.

[0036] When the forward and reverse motor 13 is controlled to work in reverse, the reeling frame 14 reverses and unwinds the curtain 12, so that the curtain 12 is unfolded and put into use. Due to the insufficient weight of the curtain 12, the reeling frame 14 may rotate but the curtain 12 is wound between the two layers outside the reeling frame 14 and spreads out, and the bottom end of the curtain 12 moves down slowly or even gets stuck, and the user needs to pull the bottom of the curtain 12 by hand to unfold the curtain 12 and put it into use. In this embodiment, the auxiliary unfolding structure 2 and the auxiliary cleaning structure 3 are arranged to cooperate to solve the above problem;

[0037] The following is the working principle of the auxiliary deployment structure 2 and the auxiliary cleaning structure 3:

[0038] When the winding frame 14 is reversed, since the two transmission shafts 1 24 and the two transmission shafts 27 in the auxiliary unfolding structure 2 are both rotatably connected to the device housing 11, the two transmission shafts 1 24 are symmetrically arranged on both sides of the curtain 12, and the two transmission shafts 27 are respectively arranged on the top of the two transmission shafts 1 24 on the side away from the curtain 12, and the transmission assembly arranged between one of the transmission shafts 1 24 and the winding frame 14 includes a chain 22, and the chain 22 is internally meshed with a sprocket 1 21 and a sprocket 23, wherein the sprocket 1 21 is fixedly sleeved on the output end of the forward and reverse motor 13, and the sprocket 23 is fixedly sleeved on the transmission shaft 1 24. Figure 3 As shown, when the winding frame 14 rotates, under the action of the transmission assembly, a transmission shaft 24 rotates, and two transmission gears 25 fixedly sleeved on the outside of the two transmission shafts 24 mesh together. Under the action of the two transmission gears 25, the two transmission shafts 24 rotate synchronously, and the rotation directions of the two transmission shafts 24 are opposite. At this time, the two rubber friction rollers 26 fixedly sleeved on the outside of the two transmission shafts 24 rotate and the rotation directions are opposite. Because the two rubber friction rollers 26 are respectively arranged on both sides of the curtain 12, as shown in FIG. Figure 4 As shown, in the process of the reeling frame 14 unwinding the screen 12 in reverse, the rotational force driving the reeling frame 14 is transmitted through the transmission assembly and two transmission gears 25, which will cause the two rubber friction rollers 26 whose outer sides are in line contact with the screen 12 to apply a downward force to the screen 12 from both sides of the screen 12, thereby ensuring that the screen 12 can be stably unfolded and preventing the staff from pulling the screen 12 by hand and causing damage to the screen structure 1 of the projection equipment; similarly, when the reeling frame 14 rewinds the screen 12 in the forward direction, the two rubber friction rollers 26 apply an upward force to the screen 12, and the two rubber friction rollers 26 play the role of smoothing the screen 12.

[0039] When the two transmission gears 1 25 rotate, they drive the meshing transmission gear 2 217 to rotate, and the magnet part 216 fixedly nested inside the transmission gear 217 rotates. The magnet part 216 is internally connected to the transmission shaft 27 for rotation. Before the transmission shaft 27 is not blocked by external force, the resistance of the magnet part 216 to drive the transmission shaft 27 to rotate is less than the magnetic force of the magnet part 216 to adsorb and fix the transmission shaft 27, and at this time the transmission shaft 27 will rotate.

[0040] Cleaning plates 214 are fixedly connected to the outer sides of the two transmission shafts 27 near the curtain 12. A rubber member 213 is provided on the top of one cleaning plate 214, and an auxiliary cleaning structure 3 is provided on one side of the other cleaning plate 214. Figure 4As shown, in the process of unwinding the curtain 12 by the reeling frame 14, the two transmission shafts 27 rotate to drive the two cleaning plates 214 to rotate in the direction away from the curtain 12 at the same time, and the two cleaning plates 214 tilt upward, and the two cleaning plates 214 are respectively in contact with the rubber member 1 213 and the auxiliary cleaning structure 3. At this time, the movement of the cleaning plates 214 is restricted, and the transmission shaft 27 fixedly connected to the cleaning plates 214 is restricted from rotating. At this time, the resistance of the magnet member 216 to drive the transmission shaft 27 to rotate is greater than the magnetic force between the magnet member 216 and the transmission shaft 27, so the magnet member 216 rotates with the transmission gear 217 on the outside of the transmission shaft 27, and the transmission shaft 27 does not rotate. The two cleaning plates 214 are arranged on both sides of the curtain 12 but do not contact the curtain 12, thereby reducing the friction of the curtain 12.

[0041] During the reeling process of the reeling frame 14, the two transmission shafts 27 rotate to drive the two cleaning plates 214 to approach the curtain 12. When one end of the cleaning plate 214 contacts the curtain 12, the bottom of the cleaning plate 214 contacts the rubber friction roller 26. Figure 5 As shown, at this time, the movement of the cleaning plate 214 is restricted, and the rotation of the second transmission shaft 27 is restricted; however, the second magnet member 216 rotates and applies a force to the second transmission shaft 27, and the cleaning plate 214 is always supported by the force, so that the cleaning plate 214 is always in contact with the curtain 12 during the process of the curtain 12 being rolled up, and the lower ends of the two cleaning plates 214 are kept in contact with the curtain 12, as shown in FIG. Figure 4 As shown, the cleaning plate 214 smoothes and cleans the curtain 12 to ensure that the outside of the curtain 12 is clean, reduce the amount of garbage sticking to the surface of the curtain 12 after it is rolled up, and extend the service life of the curtain 12; Figure 3 As shown, a plurality of annular grooves 218 are formed on the outer side of the rubber friction roller 26 , and garbage impurities can leave the interior of the device housing 11 through the annular grooves 218 .

[0042] like Figure 8 As shown, a plurality of atomizing nozzles 37 are fixedly connected to one side of the diverter box 36 in the auxiliary cleaning structure 3, and the atomizing nozzles 37 are directed toward the lower end of the cleaning plate 214 at the bottom of the diverter box 36, and the atomizing nozzles 37 are directed toward the side of the curtain 12 displaying the projection.

[0043] like Fig. 9As shown, one side of the diverter box 36 is fixedly connected to an atomizing nozzle 37, the bottom of the diverter box 36 is fixedly connected to a rubber ball 38, the rubber ball 38 is located on the top of the cleaning plate 214 on the same side, the top of the diverter box 36 is fixedly connected to a guide pipe 35, one side of the guide pipe 35 is fixedly connected to a water pump 34, one side of the water pump 34 is fixedly connected to a liquid storage tank 31, the liquid storage tank 31 is fixedly installed inside the equipment housing 11, the top of the liquid storage tank 31 is fixedly connected to a controller 32, and a plurality of fixed bent plates 39 are fixedly connected between the diverter box 36 and the liquid storage tank 31.

[0044] A fixed bent plate three 319 is fixedly connected between the rubber cross plate 320 and the diverter box one 36 , and the fixed bent plate three 319 is set in an L shape. A gas nozzle 312 is fixedly connected to one side of the diverter box two 310 , and a fixed bent plate two 311 is fixedly connected between the top of the diverter box two 310 and the liquid storage tank 31 .

[0045] The auxiliary cooperative component includes an air pump 318, a guide pipe 313 and a guide pipe 1 33. The guide pipe 1 33 is fixedly connected between the water inlet of the water pump 34 and the liquid storage tank 31. One end of the guide pipe 313 is fixedly connected to the guide pipe 4 314. The air pump 318 is fixedly connected to the bottom of the liquid storage tank 31. The output end of the air pump 318 is fixedly connected to the guide pipe 6 317. The adjacent ends of the guide pipe 6 317 and the guide pipe 4 314 are both connected to the guide pipe 5 315. Fig.10 , Fig.11 As shown, an electric heater 316 is fixedly connected between the two guide pipes 5 315. The electric heater 316 is a hollow tube. The two guide pipes 5 315 are connected through the electric heater 316. The electric heater 316 passes through the guide pipe 1 33 and is fixedly connected to the guide pipe 1 33.

[0046] When the staff determines that the side of the screen 12 displaying the projection needs to be cleaned, the auxiliary cleaning structure 3 is controlled to work. At this time, the water pump 34 in the auxiliary cleaning structure 3 works. Since the guide pipe 33 is fixedly connected between the water inlet of the water pump 34 and the liquid storage tank 31, Figure 6 , Fig. 9As shown, the guide pipe 2 35 fixedly connected to the top of the diverter box 1 36 is fixedly connected to the water outlet of the water pump 34, so when the water pump 34 is working, after extracting the cleaning liquid stored in the liquid storage tank 31 through the guide pipe 1 33, the water pump 34 transports the cleaning liquid into the diverter box 1 36 through the guide pipe 2 35. After the pressure inside the diverter box 1 36 increases, the cleaning liquid is atomized by multiple atomizing nozzles 37 and then sprayed out. The atomizing nozzles 37 spray the cleaning liquid to the position where the lower end of the cleaning plate 214 contacts the curtain 12, so as to flush the curtain 12 and improve the cleaning effect of the cleaning plate 214 on the curtain 12; and an L-shaped fixed bent plate 319 is fixedly connected to the top of the diverter box 1 36, and one end of the rubber horizontal plate 320 fixedly connected to the fixed bent plate 319 contacts the curtain 12, and the rubber horizontal plate 320 scrapes the flushed curtain 12 to scrape off part of the water, thereby accelerating the drying speed of the curtain 12.

[0047] A plurality of gas nozzles 312 are fixedly connected to one side of the second diverter box 310, and the gas nozzles 312 face the top of the position where the curtain 12 is cleaned by the rubber horizontal plate 320. During the operation of the water pump 34, the air pump 318 in the auxiliary cooperative component works synchronously, and the air pump 318 fixedly connected to the bottom of the liquid storage tank 31 outputs airflow. Since one end of the guide pipe member 3 313 fixed on the second diverter box 310 is fixedly connected to the guide pipe member 4 314, the output end of the air pump 318 is fixedly connected to the guide pipe member 6 317, and the adjacent ends of the guide pipe member 6 317 and the guide pipe member 4 314 are both connected to the guide pipe member 5 315. An electric heater 316 is fixedly connected between the two guide pipe members 5 315, and the electric heater 316 is a ptc semiconductor heating tube (commercially available product). The two guide pipe members 5 315 are electrically heated by The electric heating element 316 penetrates the guide pipe 33 and is fixedly connected to the guide pipe 33. When the air pump 318 is working, the electric heating element 316 works synchronously, and the electric heating element 316 generates heat. The multiple electric heating elements 316 heat the cleaning liquid passing through the guide pipe 33. The heated cleaning liquid improves the cleaning effect. At the same time, the airflow output by the air pump 318 passes through the guide pipe 6 317, the guide pipe 5 315, the electric heating element 316, the guide pipe 4 314 and the guide pipe 3 313 into the diverter box 2 310. The airflow is heated by the electric heating element 316. After the air pressure inside the diverter box 2 310 reaches a certain value, the hot air inside the diverter box 2 310 is sprayed toward the curtain 12 through the multiple gas nozzles 312 to dry the curtain 12, thereby accelerating the drying speed of the curtain 12.

[0048] like Figure 4 and Figure 5As shown, two fixed plates 28 are arranged on the outer side of the transmission shaft 27, and the fixed plates 28 are fixedly connected to the device housing 11, and a mounting sleeve 215 is fixedly connected between the two fixed plates 28, and the mounting sleeve 215 is rotatably sleeved on the outer side of the magnet part 216, and the fixed plate 28 fixedly connected to the device housing 11 supports the magnet part 216 through the mounting sleeve 215 to ensure that the magnet part 216 rotates stably on the transmission shaft 27, and two fixed plates 29 are fixedly connected between the two fixed plates 28, and a magnet part 210 is fixedly connected between the two fixed plates 29, and the transmission shaft 27 passes through the magnet part 210 that cannot move, and the resistance of the transmission shaft 27 during rotation is increased by the magnet part 210, so as to reduce the force exerted on the rubber friction roller 26 when limiting the rotation of the cleaning plate 214 driven by the transmission shaft 27, thereby reducing the damage of the cleaning plate 214 to the rubber friction roller 26.

[0049] like Figure 4 and Figure 5 As shown, one end of the magnet member 210 is rotatably sleeved on the outside of the adjacent transmission shaft 24 to support the transmission shaft 24 and ensure the stability of the rotation of the transmission shaft 24.

[0050] like Figure 4 As shown, the top of the magnet member 210 away from the auxiliary cleaning structure 3 is fixedly connected with a fixing plate 3 211, one side of the fixing plate 3 211 is fixedly connected with a fixing rod 1 212, the fixing rod 1 212 passes through a rubber member 213 and is fixedly connected to the rubber member 213, and the rubber member 213 is located on the top of the cleaning plate 214 on the same side; the rubber member 213 limits the cleaning plate 214, limits the rotation trajectory of the cleaning plate 214, and ensures the stability of the cleaning plate 214.

[0051] like Figure 6 and Figure 5 As shown, a plurality of fixed bent plates 39 are fixedly connected between the diverter box 1 36 and the liquid storage tank 31, a plurality of fixed bent plates 311 are fixedly connected between the top of the diverter box 310 and the liquid storage tank 31, and a plurality of rubber balls 38 are fixedly connected to the bottom of the diverter box 1 36. The rubber balls 38 with a certain deformation ability cushion the cleaning plate 214 to reduce the vibration generated when the movement of the cleaning plate 214 is blocked.

[0052] A controller 32 is fixedly arranged on the top of the liquid storage tank 31 , and the controller 32 is used to control the start and stop of the forward and reverse motor 13 , the water pump 34 , the electric heating element 316 and the air pump 318 .

[0053] 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 smart education campus projection device, comprising a projection device screen structure (1), wherein the projection device screen structure (1) comprises a device housing (11), a screen (12), a forward and reverse motor (13) and a winding frame (14); characterized in that: An auxiliary unfolding structure (2) is arranged inside the device housing (11), and the auxiliary unfolding structure (2) comprises two transmission shafts (24) arranged on both sides of the curtain (12), the two transmission shafts (24) are rotatably mounted inside the device housing (11), the outer sides of the two transmission shafts (24) are fixedly sleeved with rubber friction rollers (26), and the two rubber friction rollers (26) are respectively arranged on both sides of the curtain (12); the outer curved surfaces of the rubber friction rollers (26) are in line contact with the curtain (12), the outer sides of the two transmission shafts (24) are fixedly sleeved with transmission gears (25), and the transmission gears (25) on the two transmission shafts (24) are meshed with each other, and a transmission assembly is arranged between one of the transmission shafts (24) and the winding frame (14); The top of the two transmission gears (25) is meshed with a transmission gear (217) on one side away from the curtain (12); a magnet part (216) is fixedly embedded in the two transmission gears (217); the two magnet parts (216) are rotatably connected to a transmission shaft (27) inside; the transmission shaft (27) and the magnet part (216) are magnetically attracted; a cleaning plate (214) is fixedly connected to the outer side of the two transmission shafts (27) at a position close to the curtain (12); a rubber part (213) is arranged on the top of one of the cleaning plates (214); and an auxiliary cleaning structure (3) is arranged on one side of the other cleaning plate (214); The auxiliary cleaning structure (3) is located on the top of the cleaning plate (214), and comprises a diverter box 1 (36), a rubber cross plate (320) and a diverter box 2 (310) arranged in sequence from bottom to top, and an auxiliary coordination component is arranged between the diverter box 2 (310) and the diverter box 1 (36); Two fixing plates (28) are arranged on the outer side of the transmission shaft (27), the fixing plates (28) are fixedly connected to the device housing (11), a mounting sleeve (215) is fixedly connected between the two fixing plates (28), the mounting sleeve (215) is rotatably sleeved on the outer side of the magnet component (216), two fixing plates (29) are fixedly connected between the two fixing plates (28), a magnet component (210) is fixedly connected between the two fixing plates (29), and the transmission shaft (27) passes through the magnet component (210); One end of the magnet member 1 (210) is rotatably sleeved on the outside of the adjacent transmission shaft 1 (24), and the top of the magnet member 1 (210) away from the auxiliary cleaning structure (3) is fixedly connected to a fixing plate 3 (211), and one side of the fixing plate 3 (211) is fixedly connected to a fixing rod 1 (212), and the fixing rod 1 (212) passes through a rubber member 1 (213) and is fixedly connected to the rubber member 1 (213), and the rubber member 1 (213) is located on the top of the cleaning plate (214) on the same side; A misting nozzle (37) is fixedly connected to one side of the diverter box (36); a rubber ball (38) is fixedly connected to the bottom of the diverter box (36); the rubber ball (38) is located on the top of the cleaning plate (214) on the same side; a flow guide pipe (35) is fixedly connected to the top of the diverter box (36); a water pump (34) is fixedly connected to one side of the diverter pipe (35); a liquid storage tank (31) is fixedly connected to one side of the water pump (34); the liquid storage tank (31) is fixedly installed inside the equipment housing (11); a controller (32) is fixedly connected to the top of the liquid storage tank (31); and a plurality of fixed bent plates (39) are fixedly connected between the diverter box (36) and the liquid storage tank (31); The auxiliary cooperative component comprises an air pump (318), a flow guide pipe member 3 (313) and a flow guide pipe member 1 (33); the flow guide pipe member 1 (33) is fixedly connected between the water inlet of the water pump (34) and the liquid storage tank (31); one end of the flow guide pipe member 3 (313) is fixedly connected to the flow guide pipe member 4 (314); the air pump (318) is fixedly connected to the bottom of the liquid storage tank (31); the output end of the air pump (318) is fixedly connected to the flow guide pipe member 6 (317). The adjacent ends of the flow guide pipe member 6 (317) and the flow guide pipe member 4 (314) are both connected to the flow guide pipe member 5 (315), and an electric heating element (316) is fixedly connected between the two flow guide pipe members 5 (315). The electric heating element (316) is a hollow tube body. The two flow guide pipe members 5 (315) are connected through the electric heating element (316), and the electric heating element (316) passes through the flow guide pipe member 1 (33) and is fixedly connected to the flow guide pipe member 1 (33).

2. The smart education campus projection device according to claim 1, characterized in that: The reeling frame (14) is rotatably mounted inside the device housing (11); the housing of the forward and reverse motor (13) is fixedly connected to the inside of the device housing (11); the output end of the forward and reverse motor (13) is fixedly connected to the reeling frame (14); one end of the curtain (12) is wound on the reeling frame (14); and the other end of the curtain (12) passes through the bottom of the device housing (11).

3. The smart education campus projection device according to claim 2, characterized in that: The transmission assembly comprises a chain (22), wherein a sprocket wheel 1 (21) and a sprocket wheel 2 (23) are meshed inside the chain (22), wherein the sprocket wheel 1 (21) is fixedly sleeved on the output end of the forward and reverse motor (13), and the sprocket wheel 2 (23) is fixedly sleeved on the transmission shaft 1 (24).

4. The smart education campus projection device according to claim 1, characterized in that: The two cleaning plates (214) are symmetrically arranged on both sides of the curtain (12); the two cleaning plates (214) can be tilted downward, with the lower ends in contact with the curtain (12), while the bottoms of the cleaning plates (214) are in contact with the rubber friction roller (26).

5. The smart education campus projection device according to claim 1, characterized in that: A fixed bent plate three (319) is fixedly connected between the rubber cross plate (320) and the diverter box one (36); the fixed bent plate three (319) is arranged in an L shape; a gas nozzle (312) is fixedly connected to one side of the diverter box two (310); and a fixed bent plate two (311) is fixedly connected between the top of the diverter box two (310) and the liquid storage tank (31).

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