Screen gravity traction control device and method

Abstract

This invention discloses a screen gravity traction control device and method, specifically relating to the field of screen control technology. It includes a mounting frame with two symmetrically distributed mounting frames. A traction mechanism is fixedly mounted at the bottom of each mounting frame. An auxiliary mechanism is fixedly mounted on one side of the bottom of each traction mechanism. A screen is housed within the traction mechanism and the auxiliary mechanism. The traction mechanism includes a traction outer frame, which is fixedly mounted at the bottom of the mounting frame. A recessed frame is integrally formed on one side of the bottom of the traction outer frame. This invention, by setting up a traction mechanism comprising a roller and multiple support components, allows the roller to rotate forward and backward, automatically winding and unwinding the screen. Simultaneously, it controls the lifting and lowering of multiple support rollers, ensuring that the multiple support rollers always provide multi-point support for the winding screen, thereby always providing multi-point support for the roller and preventing the roller from bending and sagging in the middle, which would affect the winding and unwinding of the screen and the overall flatness of the screen.

Description

Technical Field

[0001] This invention relates to the field of screen control technology, specifically to a screen gravity traction control device and method. Background Technology

[0002] To meet projection needs, a projection screen is required that can be rolled up when not in use without affecting stage use. Traditionally, a top-retractable motorized screen is used, with the screen housing fixed above the stage. When needed, the screen is slowly lowered by rotating the roller, and then rolled back up after use, without taking up stage space.

[0003] Traditional screen gravity traction control devices still have some problems in use: due to the long width of the screen, the screen can only be rolled up and down by rotating the roller. Since the roller is fixed at both ends but lacks support in the middle, it will bend and sag in the middle under the influence of gravity. If the sag reaches a certain extent, it will affect the rolling up and down of the screen and the overall flatness of the screen. Secondly, the device can only roll up and down the screen, and its functionality is limited. Therefore, we propose a screen gravity traction control device and method to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a screen gravity traction control device and method to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a screen gravity traction control device, comprising a mounting frame, wherein two mounting frames are symmetrically distributed, a traction mechanism is fixedly mounted at the bottom end of the two mounting frames, an auxiliary mechanism is fixedly mounted on one side of the bottom of the traction mechanism, and a screen cloth is provided in the traction mechanism and the auxiliary mechanism;

[0006] The traction mechanism includes a traction outer frame, which is fixedly installed at the bottom of the mounting frame. A recessed frame is integrally formed on one side of the bottom of the traction outer frame. A rotating seat is fixedly clamped in the middle of the traction outer frame. A roller is rotatably installed in the middle of the rotating seat. Limiting rings are fixedly sleeved on both sides of the outer wall of the roller. Multiple evenly distributed support members are fixedly clamped on the recessed frame. A screen through-groove is opened on one side of the bottom of the traction outer frame. Two first guide rollers are symmetrically distributed in the screen through-groove. A rotating cylinder corresponding to the first guide roller is fixedly installed in the screen through-groove. The first guide roller is rotatably installed on the corresponding rotating cylinder.

[0007] In a preferred embodiment of the present invention, the support member includes a support slide cylinder, which is fixedly snapped onto the sunken frame. A lifting slide cylinder is slidably inserted into the middle of the support slide cylinder. A U-shaped frame is fixedly installed on the bottom end of the sunken frame near the support slide cylinder. A lifting screw is rotatably installed in the middle of the U-shaped frame. An internal threaded tube that cooperates with the lifting screw is fixedly snapped into the middle of the lifting slide cylinder. The lifting screw is threaded into the internal threaded tube. A roller frame is fixedly installed at the top of the lifting slide cylinder. A support roller is rotatably installed on the roller frame. A first worm gear is fixedly sleeved on the bottom of the lifting screw. A first frame is fixedly installed on the side end of the U-shaped frame. A first worm is rotatably installed on the bottom of the first frame. The first worm and the first worm gear are meshed together.

[0008] As a preferred embodiment of the present invention, a first frame is fixedly installed on the side of the bottom of the traction outer frame away from the screen through groove, the U-shaped frame is located in the first frame, a common drive shaft is rotatably installed at the bottom of the first frame, and the common drive shaft is slidably engaged in the middle of a plurality of first worm gears.

[0009] As a preferred embodiment of the present invention, a first gear is fixedly sleeved at both ends of the reel, a second gear is meshed with the bottom of the first gear, the second gear is rotatably mounted on the traction outer frame, a third gear is meshed with the bottom of the second gear, a first shaft is fixedly clamped in the middle of the third gear, the first shaft is rotatably mounted on the traction outer frame, a fourth gear is fixedly sleeved at both ends of the co-drive shaft, a fifth gear is meshed with the top of the fourth gear, a second shaft is fixedly clamped in the middle of the fifth gear, the second shaft is rotatably mounted on the sunken frame, and a pulley drive assembly is fixedly sleeved at the ends of both the first shaft and the second shaft. The pulley drive assembly includes two pulleys and a drive belt movably sleeved on the outside of the two pulleys, and the two pulleys are respectively fixedly sleeved at the ends of the first shaft and the second shaft.

[0010] As a preferred embodiment of the present invention, a second worm gear is fixedly sleeved at the end of the first shaft, a second worm is meshed with the top of the second worm gear, a second frame is rotatably mounted at both ends of the second worm, the second frame is fixedly mounted on the outside of the sunken frame, a first motor is fixedly mounted on the outside of the second frame, and the drive end of the first motor and the end of the second worm are fixedly mounted.

[0011] As a preferred embodiment of the present invention, the outer walls of the traction frame and the sunken frame are fixedly equipped with protective covers.

[0012] As a preferred embodiment of the present invention, the auxiliary mechanism includes a protective frame, which is fixedly installed on the bottom of the traction outer frame near the screen groove. A second guide roller, vertically corresponding to the first guide roller, is rotatably installed on the top of the protective frame, and a third guide roller, vertically corresponding to the first guide roller, is rotatably installed on the bottom of the protective frame. A cleaning component is provided between the second guide roller and the third guide roller.

[0013] As a preferred embodiment of the present invention, the screen is arranged between two first guide rollers, two second guide rollers and two third guide rollers.

[0014] As a preferred embodiment of the present invention, the cleaning component includes a cleaning outer frame, which is fixedly snapped onto a protective frame. A cleaning groove is provided in the middle of the cleaning outer frame. Two symmetrically distributed mounting brackets are fixedly installed on the top of the cleaning groove. Cleaning brush strips are fixedly installed at the opposite ends of the two mounting brackets. The screen cloth moves through the cleaning groove, and the outer wall of the screen cloth contacts the cleaning brush strips. A cleaning cavity is provided in the cleaning outer frame. A waste inlet groove is provided at the bottom of the cleaning groove, and the waste inlet groove communicates with the cleaning cavity. A connector is fixedly installed on one side of the bottom of the cleaning outer frame, and a connecting pipe is fixedly installed at the end of the connector.

[0015] A method for using a screen gravity traction control device includes the following steps:

[0016] Step 1: Secure the entire screen gravity traction control device using two mounting brackets, and connect the end of the connecting pipe to the suction end of the dust pump mechanism.

[0017] Step 2: When the screen is rolled up, the first motor is activated to drive the second worm gear to rotate, which in turn drives the first shaft to rotate. This drives the third gear to slowly rotate the first gear, which in turn drives the roll to rotate slowly. The roll automatically rolls up the screen. By driving the first shaft to rotate, and with the transmission of the belt pulley group, the second shaft is driven to rotate synchronously, which in turn drives the fifth gear to slowly rotate the fourth gear, which in turn drives the common drive shaft to rotate. This drives multiple first worm gears to rotate synchronously, which in turn drives multiple first worm gears and lifting screws to rotate synchronously. The lifting screws are threaded in the inner spiral tube, which drives multiple lifting cylinders and support rollers to descend synchronously and slowly. As the outer contour of the rolled-up screen increases, the support rollers descend synchronously and slowly, ensuring that the outer wall of the support rollers is always in contact with the outer side of the rolled-up screen. Through multiple support rollers, the rolled-up screen is always supported at multiple points, which in turn provides multi-point support to the roll.

[0018] When the roller automatically rewinds the screen, the screen moves slowly upward. As the outer wall of the screen comes into contact with the cleaning brush strip, the cleaning brush strip automatically cleans the dust on the outer wall of the screen simultaneously, eliminating the need for manual cleaning and facilitating subsequent use of the screen. At the same time, the dust pump mechanism is activated, and the dust generated during cleaning is sucked into the dust pump mechanism through the waste inlet trough, cleaning chamber, connector, and connecting pipe, thereby collecting the cleaning dust.

[0019] Step 3: When the screen is unrolled, the first motor drives the second worm gear to rotate, which in turn drives the first shaft to rotate in the opposite direction. This drives the third gear to slowly rotate the first gear in the opposite direction, which in turn drives the roll to slowly rotate in the opposite direction. The roll automatically unrolls the screen. By driving the first shaft to rotate in the opposite direction, in conjunction with the belt pulley transmission group, the second shaft is driven to rotate in the opposite direction synchronously. This drives the fifth gear to slowly rotate the fourth gear in the opposite direction, which in turn drives the common drive shaft to rotate in the opposite direction. This drives multiple first worm gears to rotate in the opposite direction synchronously, which in turn drives multiple first worm gears and lifting screws to rotate in the opposite direction synchronously. The lifting screws are threaded in the inner thread tube, which drives multiple lifting cylinders and support rollers to move upwards synchronously and slowly. As the outer contour of the unrolled screen decreases, the support rollers move upwards synchronously and slowly, ensuring that the outer wall of the support rollers is always in contact with the outer side of the rolled-up screen. The multiple support rollers provide multi-point support for the rolled-up screen.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. By setting up a traction mechanism, which includes a roller and multiple support components, the roller can automatically wind up and unwind the screen by rotating forward and backward. At the same time, it controls the raising and lowering of multiple support rollers so that the multiple support rollers always provide multi-point support for the wind-up screen, thereby always providing multi-point support for the roller and preventing the roller from bending and sagging in the middle, which would affect the wind-up and unwinding of the screen and the overall flatness of the screen.

[0022] 2. By setting up an auxiliary mechanism, when the roller automatically rewinds the screen, the screen moves slowly upward. As the outer wall of the screen comes into contact with the cleaning brush strip, the cleaning brush strip automatically cleans the dust on the outer wall of the screen simultaneously, eliminating the need for manual cleaning and facilitating subsequent use of the screen. At the same time, the dust pump mechanism is activated, and the dust generated during cleaning is sucked into the dust pump mechanism through the waste inlet trough, cleaning chamber, connector, and connecting pipe, thereby collecting the cleaned dust and improving the functionality of the entire screen gravity traction control device. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the present invention.

[0025] Figure 2 This is a schematic diagram showing the structural connection between the traction mechanism and the auxiliary mechanism in this invention.

[0026] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle.

[0027] Figure 4 This is a schematic diagram of the traction mechanism in this invention.

[0028] Figure 5 For the present invention Figure 4 Enlarged view at point B in the middle.

[0029] Figure 6 For the present invention Figure 5 Enlarged view at point C in the middle.

[0030] Figure 7 For the present invention Figure 4 Enlarged view at point D in the middle.

[0031] Figure 8 This is a schematic diagram of the support structure in this invention.

[0032] Figure 9 This is a schematic diagram of the traction outer frame in this invention.

[0033] Figure 10 This is a schematic diagram of the cleaning component in this invention.

[0034] Figure 11 For the present invention Figure 10 Enlarged view at point E in the middle.

[0035] Figure 12 For the present invention Figure 11 Enlarged view of point F in the middle.

[0036] In the diagram: 1. Mounting frame; 2. Traction mechanism; 3. Auxiliary mechanism; 4. Screen; 5. Protective cover; 21. Traction outer frame; 22. Recessed frame; 23. Rotating seat; 24. Reel; 241. Limiting ring; 25. Support component; 26. First guide roller; 201. Screen through slot; 261. Rotating cylinder; 27. First gear; 271. Second gear; 272. Third gear; 273. First shaft; 28. Common drive shaft; 29. ​​Fourth gear; 291. Fifth gear; 292. Second shaft; 210. Belt pulley drive assembly; 211. Second worm gear; 212. Second worm; 213. Second frame; 2 14. First motor; 215. First frame; 251. Supporting slide; 252. Lifting slide; 253. U-shaped frame; 254. Lifting screw; 2541. Inner spiral tube; 255. Roller frame; 256. Supporting roller; 257. First worm gear; 2571. First frame; 2572. First worm; 31. Protective frame; 32. Second guide roller; 33. Third guide roller; 34. Cleaning component; 341. Cleaning outer frame; 342. Cleaning trough; 343. Mounting crossbeam; 344. Cleaning brush strip; 345. Connector; 346. Connecting pipe; 3401. Cleaning chamber; 3402. Waste inlet trough. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Example: Figure 1-12 As shown, the present invention provides a screen gravity traction control device, including a mounting frame 1, which has two symmetrically distributed mounting frames 1. A traction mechanism 2 is fixedly installed at the bottom end of the two mounting frames 1. An auxiliary mechanism 3 is fixedly installed on one side of the bottom of the traction mechanism 2. A screen cloth 4 is provided in the traction mechanism 2 and the auxiliary mechanism 3. In use, the entire screen gravity traction control device is fixed by the two mounting frames 1.

[0039] The traction mechanism 2 includes a traction outer frame 21, which is fixedly installed at the bottom end of the mounting frame 1. A recessed frame 22 is integrally formed on one side of the bottom end of the traction outer frame 21. A rotating seat 23 is fixedly clamped in the middle of the traction outer frame 21. A scroll 24 is rotatably mounted in the middle of the rotating seat 23. Limiting rings 241 are fixedly sleeved on both sides of the outer wall of the scroll 24. The top of the screen 4 is wrapped around the outside of the scroll 24. The two limiting rings 241 limit the side ends of the screen 4. By driving the scroll 24 to rotate, the screen 4 is moved. 4. Automatic winding is performed. Conversely, the drive shaft 24 rotates in the opposite direction to automatically unwind the screen cloth 4. Multiple evenly distributed support members 25 are fixedly clamped on the sunken frame 22. A screen through groove 201 is opened on one side of the bottom end of the traction outer frame 21. Two first guide rollers 26 are symmetrically distributed in the screen through groove 201. A rotating cylinder 261 corresponding to the first guide roller 26 is fixedly installed in the screen through groove 201. The first guide roller 26 is rotatably mounted on the corresponding rotating cylinder 261 to facilitate the rotation of the first guide roller 26.

[0040] The support member 25 includes a support slide cylinder 251, which is fixedly engaged with the recessed frame 22. A lifting slide cylinder 252 is slidably inserted into the middle of the support slide cylinder 251. A U-shaped frame 253 is fixedly installed on the bottom end of the recessed frame 22 near the support slide cylinder 251. A lifting screw 254 is rotatably installed in the middle of the U-shaped frame 253. An internal threaded tube 2541 that cooperates with the lifting screw 254 is fixedly engaged in the middle of the lifting slide cylinder 252. The screw 254 is threaded into the inner screw tube 2541. A roller frame 255 is fixedly installed at the top of the lifting slide 252. A support roller 256 is rotatably installed on the roller frame 255. The outer wall of the support roller 256 contacts the outer side of the rolled-up screen 4. The rolled-up screen 4 is supported at multiple points by multiple support rollers 256, thereby supporting the roller 24 at multiple points and preventing the roller 24 from bending and sagging in the middle, which would affect the rolling up and down of the screen 4 and the overall flatness of the screen 4.

[0041] The bottom of the lifting screw 254 is fixedly fitted with a first worm gear 257. The side end of the U-shaped frame 253 is fixedly installed with a first frame 2571. The bottom of the first frame 2571 is rotatably installed with a first worm gear 2572. The first worm gear 2572 and the first worm gear 257 are meshed together. The bottom end of the traction frame 21 is fixedly installed with a first frame 215 on the side away from the screen through slot 201. The U-shaped frame 253 is located in the first frame 215. The bottom of the first frame 215 is rotatably installed with a common drive shaft 28. The common drive shaft 28 is slidably engaged with the middle of multiple first worm gears 2572. By driving the common drive shaft 28 to rotate, multiple first worm gears 2572 are driven to rotate synchronously, thereby driving multiple first worm gears 257 and the lifting screw 254 to rotate synchronously. The lifting screw 254 is threadedly installed in the inner threaded tube 2541, driving multiple lifting cylinders 252 and support rollers 256 to rotate synchronously and slowly. As the outer contour of the screen 4 increases during unrolling, the support rollers 256 descend slowly and synchronously, ensuring that the outer wall of the support rollers 256 remains in contact with the outer side of the rolled-up screen 4. Multiple support rollers 256 provide multi-point support for the rolled-up screen 4, thus providing multi-point support for the roll 24. Conversely, by driving the common drive shaft 28 to rotate in the opposite direction, multiple first worm gears 2572 rotate in the opposite direction synchronously, which in turn drives multiple first worm wheels 257 and lifting screws 254 to rotate in the opposite direction synchronously. The lifting screws 254 are threaded into the inner threaded tube 2541, driving multiple lifting cylinders 252 and support rollers 256 to move slowly and synchronously upwards. As the outer contour of the screen 4 decreases during unrolling, the support rollers 256 move slowly and synchronously upwards, ensuring that the outer wall of the support rollers 256 remains in contact with the outer side of the rolled-up screen 4. Multiple support rollers 256 provide multi-point support for the rolled-up screen 4.

[0042] The two ends of the roller 24 are fixedly fitted with a first gear 27. The bottom of the first gear 27 is meshed with a second gear 271. The second gear 271 is rotatably mounted on the traction frame 21. The bottom of the second gear 271 is meshed with a third gear 272. The middle of the third gear 272 is fixedly fitted with a first shaft 273. The first shaft 273 is rotatably mounted on the traction frame 21. By driving the first shaft 273 to rotate, the third gear 272 is driven to drive the first gear 27 to rotate slowly, thereby driving the roller 24 to rotate slowly. The roller 24 automatically winds up the screen 4. Conversely, by driving the first shaft 273 to rotate in the opposite direction, the third gear 272 is driven to drive the first gear 27 to rotate slowly in the opposite direction, thereby driving the roller 24 to rotate slowly in the opposite direction. The roller 24 automatically unwinds the screen 4.

[0043] The two ends of the common drive shaft 28 are fixedly fitted with a fourth gear 29. The top of the fourth gear 29 is meshed with a fifth gear 291. The middle of the fifth gear 291 is fixedly fitted with a second shaft 292. The second shaft 292 is rotatably mounted on the recessed frame 22. The ends of the first shaft 273 and the second shaft 292 are both fixedly fitted with a pulley drive assembly 210. The pulley drive assembly 210 includes two pulleys and a drive belt movably fitted on the outside of the two pulleys. The two pulleys are respectively fixedly fitted on the ends of the first shaft 273 and the second shaft 292. By driving the first shaft 273 to rotate, in conjunction with the drive of the pulley drive assembly 210, the second shaft 292 is driven to rotate synchronously, thereby driving the fifth gear 291 to drive the fourth gear 29 to rotate slowly and synchronously, thereby driving the common drive shaft 28 to rotate.

[0044] A second worm gear 211 is fixedly sleeved at the end of the first shaft 273. A second worm 212 is meshed with the top of the second worm gear 211. A second frame 213 is rotatably mounted at both ends of the second worm 212. The second frame 213 is fixedly mounted on the outside of the recessed frame 22. A first motor 214 is fixedly mounted on the outside of the second frame 213. The drive end of the first motor 214 and the end of the second worm 212 are fixedly mounted. In use, the first motor 214 is turned on to drive the second worm 212 to rotate the second worm gear 211, thereby driving the first shaft 273 to rotate.

[0045] The outer walls of the traction frame 21 and the sinking frame 22 are fixedly equipped with protective covers 5, which protect the internal parts.

[0046] The auxiliary mechanism 3 includes a protective frame 31, which is fixedly installed on the bottom of the traction outer frame 21 near the screen groove 201. A second guide roller 32, vertically corresponding to the first guide roller 26, is rotatably installed on the top of the protective frame 31, and a third guide roller 33, vertically corresponding to the first guide roller 26, is rotatably installed on the bottom of the protective frame 31. A cleaning component 34 is provided between the second guide roller 32 and the third guide roller 33. The screen 4 is placed between the two first guide rollers 26, the two second guide rollers 32, and the two third guide rollers 33. The two first guide rollers 26, the two second guide rollers 32, and the two third guide rollers 33 guide the screen 4 to prevent wrinkles from forming when the screen 4 is rolled up and down, thereby improving the effect of rolling up and down the screen 4.

[0047] The cleaning component 34 includes a cleaning frame 341, which is fixedly snapped onto a protective frame 31. A cleaning groove 342 is formed in the middle of the cleaning frame 341. Two symmetrically distributed mounting brackets 343 are fixedly installed on the top of the cleaning groove 342. Cleaning brush strips 344 are fixedly installed at opposite ends of the two mounting brackets 343. The screen 4 moves through the cleaning groove 342, and its outer wall contacts the cleaning brush strips 344. A cleaning cavity 3401 is formed in the cleaning frame 341. A waste inlet groove 3402 is formed at the bottom of the cleaning groove 342, communicating with the cleaning cavity 3401. One side of the bottom of the cleaning frame 341 is fixed... A connector 345 is installed, and a connecting pipe 346 is fixedly installed at the end of the connector 345. In use, the end of the connecting pipe 346 is connected to the suction end of the vacuum pump mechanism. When the roller 24 automatically rewinds the screen 4, the screen 4 moves slowly upward. Since the outer wall of the screen 4 is in contact with the cleaning brush 344, the cleaning brush 344 automatically cleans the dust on the outer wall of the screen 4 simultaneously, eliminating the need for manual cleaning and facilitating the subsequent use of the screen 4. At the same time, the vacuum pump mechanism is turned on, and the dust generated during cleaning is sucked into the vacuum pump mechanism through the waste inlet trough 3402, the cleaning chamber 3401, the connector 345, and the connecting pipe 346, thereby collecting the cleaned dust and improving the functionality of the entire screen gravity traction control device.

[0048] A method for using a screen gravity traction control device includes the following steps:

[0049] Step 1: Secure the entire screen gravity traction control device using two mounting brackets 1, and connect the end of the connecting pipe 346 to the suction end of the dust pump mechanism.

[0050] Step 2: When the screen 4 is rolled up, the first motor 214 is activated to drive the second worm gear 212 to rotate the second worm wheel 211, which in turn drives the first shaft 273 to rotate. This drives the third gear 272 to slowly rotate the first gear 27, which in turn drives the roller 24 to slowly rotate. The roller 24 automatically rolls up the screen 4. By driving the first shaft 273 to rotate, in conjunction with the belt pulley transmission group 210, the second shaft 292 is driven to rotate synchronously, which in turn drives the fifth gear 291 to slowly rotate the fourth gear 29, which in turn drives the common drive shaft. Rotation 28 drives multiple first worm gears 2572 to rotate synchronously, which in turn drives multiple first worm wheels 257 and lifting screws 254 to rotate synchronously. The lifting screws 254 are threaded into the inner thread tube 2541, driving multiple lifting slides 252 and support rollers 256 to descend synchronously and slowly. As the outer contour of the screen 4 increases during winding, the support rollers 256 descend synchronously and slowly, ensuring that the outer wall of the support rollers 256 is always in contact with the outer side of the winding screen 4. Through multiple support rollers 256, the winding screen 4 is always supported at multiple points, thereby always providing multi-point support to the roller 24.

[0051] When the roller 24 automatically rewinds the screen 4, the screen 4 moves slowly upward. As the outer wall of the screen 4 comes into contact with the cleaning brush 344, the cleaning brush 344 automatically cleans the dust on the outer wall of the screen 4 simultaneously, eliminating the need for manual cleaning and facilitating the subsequent use of the screen 4. At the same time, the dust pump mechanism is activated, and the dust generated during cleaning is sucked into the dust pump mechanism through the waste inlet trough 3402, the cleaning chamber 3401, the connector 345, and the connecting pipe 346, thereby collecting the cleaned dust.

[0052] Step 3: When the screen 4 is unrolled, the first motor 214 is activated to drive the second worm gear 212 to rotate the second worm wheel 211, which in turn drives the first shaft 273 to rotate in the opposite direction. This drives the third gear 272 to drive the first gear 27 to rotate slowly in the opposite direction, which in turn drives the roller 24 to rotate slowly in the opposite direction. The roller 24 automatically unrolls the screen 4. By driving the first shaft 273 to rotate in the opposite direction, in conjunction with the transmission of the belt pulley transmission group 210, the second shaft 292 is driven to rotate synchronously in the opposite direction, which in turn drives the fifth gear 291 to drive the fourth gear 29 to rotate slowly in the opposite direction. The rotation in the forward direction drives the common drive shaft 28 to rotate in the reverse direction, which in turn drives multiple first worm gears 2572 to rotate synchronously in the reverse direction. This, in turn, drives multiple first worm wheels 257 and lifting screws 254 to rotate synchronously in the reverse direction. The lifting screws 254 are threaded into the inner threaded tube 2541, which drives multiple lifting slides 252 and support rollers 256 to move synchronously and slowly upward. As the outer contour of the unrolled screen 4 decreases, the support rollers 256 move synchronously and slowly upward, ensuring that the outer wall of the support rollers 256 is always in contact with the outer side of the rolled-up screen 4. The multiple support rollers 256 provide multi-point support for the rolled-up screen 4.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A screen gravity traction control device comprising a mounting frame (1), characterised in that: The mounting frame (1) has two symmetrically distributed parts. A traction mechanism (2) is fixedly installed at the bottom end of the two mounting frames (1). An auxiliary mechanism (3) is fixedly installed on one side of the bottom of the traction mechanism (2). A screen (4) is provided in the traction mechanism (2) and the auxiliary mechanism (3). The traction mechanism (2) includes a traction outer frame (21), which is fixedly installed at the bottom end of the mounting frame (1). A sunken frame (22) is integrally formed on one side of the bottom end of the traction outer frame (21). A rotating seat (23) is fixedly clamped in the middle of the traction outer frame (21). A roller (24) is rotatably installed in the middle of the rotating seat (23). Limiting rings (241) are fixedly sleeved on both sides of the outer wall of the roller (24). A plurality of evenly distributed support members (25) are fixedly clamped on the sunken frame (22). A screen through groove (201) is opened on one side of the bottom end of the traction outer frame (21). Two first guide rollers (26) are symmetrically distributed in the screen through groove (201). A rotating cylinder (261) corresponding to the first guide roller (26) is fixedly installed in the screen through groove (201). The first guide roller (26) is rotatably installed on the corresponding rotating cylinder (261). The support member (25) includes a support slide (251), which is fixedly attached to the sunken frame (22). A lifting slide (252) is slidably inserted into the middle of the support slide (251). A U-shaped frame (253) is fixedly installed on the bottom end of the sunken frame (22) near the support slide (251). A lifting screw (254) is rotatably installed in the middle of the U-shaped frame (253). An internal threaded tube (2541) that cooperates with the lifting screw (254) is fixedly attached to the middle of the lifting slide (252). The screw (254) is threaded in the inner threaded tube (2541). A roller frame (255) is fixedly installed at the top of the lifting slide (252). A support roller (256) is rotatably installed on the roller frame (255). A first worm gear (257) is fixedly sleeved at the bottom of the lifting screw (254). A first frame (2571) is fixedly installed at the side end of the U-shaped frame (253). A first worm (2572) is rotatably installed at the bottom of the first frame (2571). The first worm (2572) and the first worm gear (257) are meshed together.

2. A screen gravity traction control device according to claim 1, wherein: The first frame (215) is fixedly installed on the side of the bottom of the traction frame (21) away from the screen through groove (201). The U-shaped frame (253) is located in the first frame (215). A common drive shaft (28) is rotatably installed at the bottom of the first frame (215). The common drive shaft (28) is slidably engaged in the middle of a plurality of first worm gears (2572).

3. A screen gravity traction control device according to claim 2, wherein: The two ends of the reel (24) are fixedly fitted with a first gear (27), the bottom of the first gear (27) is meshed with a second gear (271), the second gear (271) is rotatably mounted on the traction frame (21), the bottom of the second gear (271) is meshed with a third gear (272), the middle of the third gear (272) is fixedly fitted with a first shaft (273), the first shaft (273) is rotatably mounted on the traction frame (21), and the two ends of the common drive shaft (28) are fixedly fitted with a fourth gear (29). The top of the fourth gear (29) is meshed with the fifth gear (291). The middle of the fifth gear (291) is fixedly fitted with the second shaft (292). The second shaft (292) is rotatably mounted on the sunken frame (22). The ends of the first shaft (273) and the second shaft (292) are both fixedly fitted with a pulley drive assembly (210). The pulley drive assembly (210) includes two pulleys and a drive belt that is movably fitted on the outside of the two pulleys. The two pulleys are respectively fixedly fitted on the ends of the first shaft (273) and the second shaft (292).

4. A screen gravity traction control device according to claim 3, wherein: The end of the first shaft (273) is fixedly fitted with a second worm gear (211), the top of the second worm gear (211) is meshed with a second worm (212), the two ends of the second worm (212) are rotatably mounted with a second frame (213), the second frame (213) is fixedly mounted on the outside of the sunken frame (22), the outside of the second frame (213) is fixedly mounted with a first motor (214), the drive end of the first motor (214) and the end of the second worm (212) are fixedly mounted.

5. A screen gravity traction control device according to claim 4, wherein: The outer walls of the traction frame (21) and the sunken frame (22) are fixedly equipped with protective covers (5).

6. A screen gravity traction control device according to claim 5, wherein: The auxiliary mechanism (3) includes a protective frame (31), which is fixedly installed on the bottom of the traction outer frame (21) near the screen through groove (201). A second guide roller (32) vertically corresponding to the first guide roller (26) is rotatably installed on the top of the protective frame (31), and a third guide roller (33) vertically corresponding to the first guide roller (26) is rotatably installed on the bottom of the protective frame (31). A cleaning component (34) is provided between the second guide roller (32) and the third guide roller (33).

7. A screen gravity traction control device according to claim 6, wherein: The screen (4) is placed between two first guide rollers (26), two second guide rollers (32) and two third guide rollers (33).

8. A screen gravity traction control device according to claim 7, wherein: The cleaning component (34) includes a cleaning frame (341), which is fixedly attached to the protective frame (31). A cleaning groove (342) is provided in the middle of the cleaning frame (341). Two symmetrically distributed mounting brackets (343) are fixedly installed on the top of the cleaning groove (342). Cleaning brush strips (344) are fixedly installed at the opposite ends of the two mounting brackets (343). The screen (4) moves through the cleaning groove (34). 2) The outer wall of the screen cloth (4) is in contact with the cleaning brush strip (344). A cleaning cavity (3401) is provided in the cleaning frame (341). A waste inlet groove (3402) is provided at the bottom of the cleaning groove (342). The waste inlet groove (3402) and the cleaning cavity (3401) are connected. A connector (345) is fixedly installed on the bottom side of the cleaning frame (341). A connecting pipe (346) is fixedly installed at the end of the connector (345).

9. A method of using the screen gravity traction control device of claim 8, wherein, Includes the following steps: Step 1: Fix the entire screen gravity traction control device using two mounting brackets (1), and connect the end of the connecting pipe (346) to the suction end of the dust pump mechanism; Step 2: When the screen (4) is rolled up, the first motor (214) is activated to drive the second worm gear (212) to rotate the second worm wheel (211), which in turn drives the first shaft (273) to rotate. This drives the third gear (272) to drive the first gear (27) to rotate slowly, which in turn drives the roller (24) to rotate slowly. The roller (24) automatically rolls up the screen (4). By driving the first shaft (273) to rotate, and cooperating with the belt pulley transmission group (210), the second shaft (292) is driven to rotate synchronously, which in turn drives the fifth gear (291) to drive the fourth gear (29) to rotate slowly and synchronously, which in turn drives the common drive. The shaft (28) rotates, driving multiple first worm gears (2572) to rotate synchronously, thereby driving multiple first worm wheels (257) and lifting screws (254) to rotate synchronously. The lifting screws (254) are threaded into the inner thread tube (2541), driving multiple lifting slides (252) and support rollers (256) to descend synchronously and slowly. As the outer contour of the screen cloth (4) increases, the support rollers (256) descend synchronously and slowly, so that the outer wall of the support rollers (256) is always in contact with the outer side of the rolled-up screen cloth (4). Through multiple support rollers (256), the rolled-up screen cloth (4) is always supported at multiple points, thereby always supporting the roller (24) at multiple points. When the roller (24) automatically rewinds the screen (4), the screen (4) moves slowly upward. As the outer wall of the screen (4) comes into contact with the cleaning brush (344), the cleaning brush (344) automatically cleans the dust on the outer wall of the screen (4) simultaneously without manual cleaning, which facilitates the subsequent use of the screen (4). At the same time, the dust pump mechanism is turned on, and the dust generated during cleaning is sucked into the dust pump mechanism through the waste inlet groove (3402), the cleaning chamber (3401), the connector (345), and the connecting pipe (346), thereby collecting the cleaned dust. Step 3: When the screen (4) is unrolled, the first motor (214) is activated to drive the second worm gear (212) to rotate the second worm wheel (211), thereby driving the first shaft (273) to rotate in the opposite direction. This drives the third gear (272) to drive the first gear (27) to rotate slowly in the opposite direction, which in turn drives the roller (24) to rotate slowly in the opposite direction. The roller (24) automatically unrolls the screen (4). By driving the first shaft (273) to rotate in the opposite direction, in conjunction with the transmission of the belt pulley transmission group (210), the second shaft (292) is driven to rotate synchronously in the opposite direction, which in turn drives the fifth gear (291) to drive the fourth gear (29) to rotate slowly in the opposite direction. The first step rotates in the opposite direction, which in turn drives the common drive shaft (28) to rotate in the opposite direction, which drives multiple first worm gears (2572) to rotate in the opposite direction synchronously, which in turn drives multiple first worm wheels (257) and lifting screws (254) to rotate in the opposite direction synchronously. The lifting screws (254) are threaded into the inner thread tube (2541), which drives multiple lifting cylinders (252) and support rollers (256) to move upward synchronously and slowly. As the outer contour of the unrolled screen (4) decreases, the support rollers (256) move upward synchronously and slowly, so that the outer wall of the support rollers (256) is always in contact with the outer side of the rolled-up screen (4). The multiple support rollers (256) always provide multi-point support for the rolled-up screen (4).

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