Dust removal equipment for building ventilating duct

Abstract

The invention relates to the technical field of building ventilating duct dust removal, and discloses building ventilating duct dust removal equipment which comprises a supporting table and a walking mechanism, the walking mechanism comprises rectangular shells, a sliding plate, a support body, a driving mechanism and a linkage mechanism, and the outer side of the supporting table is connected with the uniformly distributed rectangular shells; a sliding plate is slidably connected to the inner side of the rectangular shell, a support body is connected to the side, away from the supporting table, of the sliding plate, a driving mechanism is fixedly installed on the inner side of the support body, and a linkage mechanism is connected to one end of the driving mechanism. According to the dust removal equipment for the building ventilation pipeline, through the cooperation effect of the walking mechanism and a driving mechanism and a linkage mechanism in the walking mechanism, the purpose of rapidly adjusting the equipment in all directions and angles is achieved, and the problems that the space is narrow, steering operation is difficult, and then the using effect is poor are solved; and meanwhile, a robot cleaning mode is adopted to replace a manual mode, and the advantages of high cleaning efficiency and good cleaning effect are achieved.

Description

Technical Field

[0001] This invention relates to the field of dust removal technology for building ventilation ducts, specifically to a dust removal device for building ventilation ducts. Background Technology

[0002] In large-scale construction sites, it is necessary to equip them with corresponding building ventilation ducts to ensure a good construction environment. However, during long-term use, a large amount of dust accumulates inside the building ventilation ducts, requiring regular cleaning. Therefore, dust removal equipment for building ventilation ducts has emerged. With the continuous development of technology, the development direction of dust removal equipment for building ventilation ducts is becoming increasingly diversified.

[0003] Existing dust removal equipment for building ventilation ducts has the following main technical defects: There are two main methods for cleaning building ventilation ducts. One method involves manual cleaning of the inside of the ventilation duct by hand using a retractable brush. This method has the problems of low cleaning efficiency and poor cleaning effect. The other method is to use tracked or wheeled cleaning robots. However, when tracked or wheeled cleaning robots travel through building ventilation ducts, they have difficulty turning at corners due to the narrow space, which leads to poor performance. Summary of the Invention

[0004] The purpose of this invention is to provide a dust removal device for building ventilation ducts to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a dust removal device for building ventilation ducts, comprising a support platform, a walking mechanism fixedly installed on the outer side of the support platform, a fixing mechanism fixedly connected to the inner side of the walking mechanism, an adjusting mechanism rotatably connected to the upper side of the walking mechanism, a linkage mechanism between the walking mechanism and the adjusting mechanism, an electrical mechanism fixedly installed on the walking mechanism, a main body mechanism fixedly connected to the lower side of the support platform, and a cleaning mechanism fixedly installed on one side of the main body mechanism;

[0006] The walking mechanism includes a rectangular shell, a sliding plate, a support body, a drive mechanism, and a linkage mechanism. The outer side of the support platform is fixedly connected to a uniformly distributed rectangular shell. The inner side of the rectangular shell is slidably connected to a sliding plate. The side of the sliding plate away from the support platform is fixedly connected to a support body. The inner side of the support body is fixedly installed with a drive mechanism. One end of the drive mechanism is fixedly connected to a linkage mechanism.

[0007] Furthermore, the structure of the drive mechanism includes a first motor, a drive wheel, a belt, a driven wheel, and a rotating shaft. The first motor is fixedly connected to the inner wall of the support body, the output shaft of the first motor is fixedly connected to the drive wheel, the driven wheel is rotatably connected to the inner side of the support body, a belt is connected between the drive wheel and the driven wheel, and a rotating shaft is fixedly connected to the side of the driven wheel away from the inner wall of the support body.

[0008] Furthermore, the linkage mechanism includes a bearing, a first support shaft, a second support shaft, a mounting ring, a roller, a mounting block, a spherical shaft, and a hemispherical wheel. A bearing is fixedly connected to the inner side of the rotating shaft. Two bearings are provided; the first support shaft is fixedly connected to the inner side of one bearing, and the second support shaft is fixedly connected to the inner side of the bearing on the other side. Mounting rings are fixedly connected to the outer sides of both the first and second support shafts. A hemispherical wheel is fixedly connected to the outer side of each mounting ring. A mounting block is fixedly connected to the side of the first support shaft closest to the second support shaft, and a spherical shaft is fixedly connected to the side of the second support shaft closest to the first support shaft. The mounting block engages with the spherical shaft, and the spherical shaft is rotatably connected to the first support shaft. Grooves corresponding to the spherical shaft are formed on the first support shaft and the mounting block. Rollers are rotatably connected to the inner sides of both the first and second support shafts.

[0009] After the equipment is adjusted, the first motor is started. The output of the first motor drives the drive wheel to rotate. While the drive wheel is rotating, it drives the driven wheel to rotate synchronously through the transmission of the belt. The driven wheel drives the rotating shaft to rotate. Then the rotating shaft drives the first support shaft and the second support shaft to rotate. With the cooperation of the external system and the assistance of rollers and bearings, the hemispherical wheel is driven to rotate freely, thereby realizing the purpose of the equipment being able to move freely at multiple angles.

[0010] The roller, the first support shaft, the mounting block, the spherical shaft, and the second support shaft are assembled into a whole. The mounting block is composed of two semi-circular rings. The installation method of the first support shaft and the second support shaft is as follows: first, the second support shaft is fixedly installed with the spherical shaft, then the spherical shaft is inserted into the first support shaft, and finally the mounting block is spliced ​​and fixed with the spherical shaft.

[0011] Furthermore, the fixing mechanism includes a suction cylinder, a first coil, a first spring, and a first magnetic block. The suction cylinders are fixedly installed on the inner side of the hemispherical wheel, the first coil is fixedly connected to the inner wall of the suction cylinder, the first magnetic block is slidably connected to the inner side of the suction cylinder, and the first spring is fixedly connected between the first magnetic block and the first coil.

[0012] The bottom opening of the suction cylinder is made of rubber.

[0013] Furthermore, the adjustment mechanism includes a rotating disk, an operating lever, a moving disk, a ratchet block, a second spring, and a ratchet ring assembly. The rotating disk is rotatably connected to the upper side of the support platform, the operating lever is fixedly connected to the upper side of the rotating disk, the moving disk is fixedly connected to the axial outer side of the operating lever, the ratchet block is rotatably connected to the moving disk, the second spring is fixedly connected between the ratchet block and the moving disk, and a ratchet ring assembly is provided on the outer side of the moving disk.

[0014] The ratchet ring assembly includes a ratchet ring, a second coil, a magnetic ring, a protective shell, and a fixing plate. The ratchet ring is located on the outer side of the moving disc. The ratchet ring has a ratchet groove corresponding to the ratchet block. A magnetic ring is fixedly connected to the lower side of the ratchet ring. A second coil is located on the outer side of the magnetic ring. A protective shell is fixedly connected to the outer side of the second coil. A fixing plate is fixedly connected between the protective shell and the rectangular shell. The operating lever passes through the protective shell.

[0015] While the moving disc rotates clockwise, current is passed through the second coil. After the second coil is energized, it generates a magnetic field that attracts the magnetic ring, thus fixing the ratchet ring. Under the action of the second spring and the ratchet groove on the ratchet ring, the ratchet block is continuously turned. At the same time, under the action of the ratchet block, the second spring, and the ratchet groove on the ratchet ring, the moving disc is restricted from rotating counterclockwise. Moreover, when the moving disc rotates clockwise, it has a locking effect, thus achieving the purpose of adjusting and fixing the walking mechanism at the same time. When the walking mechanism is adjusted inward, the current inside the second coil is disconnected, so that the fixing of the ratchet ring is released. Then, the operating lever is manually operated to retract the walking mechanism.

[0016] Furthermore, the linkage mechanism includes a first fixed shaft, a connecting rod, and a second fixed shaft. The first fixed shaft is fixedly connected to the upper side of the sliding plate, and the second fixed shaft is fixedly connected to the lower side of the rotating disk. A connecting rod is rotatably connected between the first fixed shaft and the second fixed shaft. A rectangular groove corresponding to the first fixed shaft is provided on the rectangular housing.

[0017] Furthermore, the electrical mechanism includes a mounting shell, a sliding rheostat, and a toggle block. The mounting shell is fixedly connected to the inner wall of the rectangular shell, the toggle block is fixedly connected to the lower side of the sliding plate, the sliding rheostat is fixedly connected to the inner bottom wall of the mounting shell, and the toggle block slides on the sliding rheostat.

[0018] Furthermore, the main structure includes a body plate and an exhaust pipe. The body plate is fixedly connected to the lower side of the support platform, and the exhaust pipe is fixedly installed on the lower side of the body plate.

[0019] The second motor is started, which drives the drive shaft to rotate. As the drive shaft rotates, it drives the connecting shell that is fixed to it, thereby driving the cleaning strip to rotate, achieving the purpose of cleaning the inside of the pipe. At the same time, since the end of the exhaust pipe is connected to an external fan, it performs a ventilation operation inside the pipe, drawing out the airflow containing dust.

[0020] While the dust is being agitated, the dust detector and the external fan are electrically connected. When the dust detector detects the dust concentration, it transmits an electrical signal to the external control system. The external control system then controls the external fan's extraction power to change positively with the dust concentration.

[0021] When the equipment stops moving, the external system controls the first coil inside the suction cylinder that is in contact with the ventilation duct to pass current. After the first coil passes current, it generates a magnetic field force that attracts the first magnetic block. The first magnetic block compresses the first spring and moves outward from the first coil, so that a negative pressure is formed between the opening of the suction cylinder and the inner wall of the duct, thereby achieving the purpose of firmly fixing the equipment.

[0022] Furthermore, the cleaning mechanism includes a circular shell, a second motor, a drive shaft, a connecting shell, an execution component, and a control mechanism. The circular shell is fixedly connected to one side of the body plate, and the second motor is also fixedly connected to one side of the body plate. The second motor is located inside the circular shell, and the output end of the second motor is fixedly connected to the drive shaft. The end of the drive shaft away from the second motor is fixedly connected to the connecting shell, and the execution component and control mechanism are provided on the connecting shell.

[0023] Furthermore, the structure of the execution component includes a gear, a take-up reel, a dust detector, and a cleaning strip. The gear is rotatably connected to the inner side of the connecting shell, and the take-up reel is fixedly connected to one side of the gear. The take-up reel is rotatably connected to the inner wall of the connecting shell, and a cleaning strip is wound around the outer axial side of the take-up reel.

[0024] The control mechanism comprises a square shell, a third coil, a second magnetic block, a rack, a T-shaped slider, a guide block, and a third spring. The square shell is fixedly connected to the inner wall of the connecting shell. The guide block is fixedly connected to the top inner wall of the square shell. The T-shaped slider is slidably connected to the inner side of the guide block. The rack is fixedly connected to the lower side of the T-shaped slider. The second magnetic block is fixedly connected to one end of the rack. The third coil is fixedly connected to the inner wall of the square shell. The third coil corresponds to the second magnetic block. The third spring is fixedly connected between the T-shaped slider and the inner wall of the square shell. The rack and gear are meshed.

[0025] Depending on the size of the building's ventilation duct, manually rotate the operating lever clockwise. As the lever rotates, it simultaneously drives the moving disc and rotating disc, which are fixedly connected to it, to rotate synchronously. Simultaneously, the rotating disc, through the action of its second fixed shaft, drives the connecting rod to rotate. This causes the connecting rod to drive the sliding plate to slide outwards along the rectangular shell via the first fixed shaft, thereby causing the three-sided traveling mechanism to adjust outwards as a whole. While the sliding plate moves outwards, it drives the actuating block, which is fixedly connected to it, to slide on the sliding rheostat. Since the sliding rheostat is electrically connected to the third coil, the sliding block changes the resistance value inside the rheostat as it slides. The farther the actuating block slides outwards, the lower the internal resistance of the rheostat, and the greater the current flowing into the third coil. When current flows into the third coil, a magnetic field repelling the second magnetic block is generated, which in turn pushes the rack through the T-shaped slider along the guide rail. Simultaneously, the rack meshes with and drives the gear to rotate.

[0026] The gear drives the take-up reel to rotate synchronously, which releases the cleaning strip wound on it as the reel rotates. The length of the cleaning strip extends to match the building ventilation duct, thus achieving the purpose of adapting to various specifications of building ventilation ducts.

[0027] Compared with the prior art, the present invention provides a dust removal device for building ventilation ducts, which has the following features:

[0028] Beneficial effects:

[0029] 1. This dust removal equipment for building ventilation ducts achieves rapid omnidirectional angle adjustment through the coordinated action of the walking mechanism and the drive and linkage mechanisms within it. The spherical wheel design replaces the existing tracked or wheeled cleaning robots, solving the problem of poor performance caused by limited space at duct bends in existing cleaning robots. Furthermore, this robotic cleaning method, replacing manual labor, offers advantages such as high cleaning efficiency and excellent cleaning results.

[0030] 2. This dust removal equipment for building ventilation ducts achieves the purpose of firmly fixing the equipment through the cooperation of the suction cylinder, the first coil, the first spring and the first magnetic block. Existing equipment mainly achieves stability during the cleaning process by increasing the weight of the equipment. This invention uses the adsorption force method to greatly reduce the weight of the equipment, making the equipment cheaper and easier to move. It also causes less damage to the building ventilation ducts. Moreover, the adsorption force method greatly improves the stability of the equipment during operation.

[0031] 3. This building ventilation duct dust removal equipment, through the coordinated action of the adjustment mechanism, linkage mechanism and cleaning mechanism, achieves the purpose of freely adapting the volume occupied by the equipment and the length of the cleaning strip according to the size of the building ventilation duct. Thus, the equipment can be adapted to building ventilation ducts of different sizes and has the advantage of high practicality.

[0032] 4. This building ventilation duct dust removal equipment, through the cooperation between the main structure and the dust detector, enables the dust detector to transmit an electrical signal of dust concentration to the external control system. The external control system then controls the external fan to change its exhaust power in a positive direction according to the dust concentration. This achieves the purpose of freely adapting the exhaust power according to the dust concentration inside the building ventilation duct, thereby saving energy and further improving the cleaning effect and efficiency. Attached Figure Description

[0033] Figure 1 This is a frontal perspective view of the present invention;

[0034] Figure 2 This is a three-dimensional structural diagram of the back of the present invention;

[0035] Figure 3 This is a top-view three-dimensional structural diagram of the present invention;

[0036] Figure 4 This is a three-dimensional structural diagram of the cleaning mechanism of the present invention;

[0037] Figure 5 This is a schematic diagram of the internal three-dimensional structure of the protective shell of the present invention after it has been cut open;

[0038] Figure 6 This is a three-dimensional structural schematic diagram of the ratchet ring assembly of the present invention;

[0039] Figure 7 This is a three-dimensional structural schematic diagram of the adjustment mechanism of the present invention;

[0040] Figure 8 This is a three-dimensional structural diagram of the linkage mechanism of the present invention;

[0041] Figure 9 This is a three-dimensional structural schematic diagram of the driving mechanism of the present invention;

[0042] Figure 10 This is a three-dimensional structural diagram of the suction cylinder of the present invention;

[0043] Figure 11 This is a three-dimensional structural diagram of the linkage mechanism of the present invention;

[0044] Figure 12 This is an exploded three-dimensional structural diagram of the linkage mechanism of the present invention;

[0045] Figure 13 This is a three-dimensional structural diagram of the fixing mechanism of the present invention;

[0046] Figure 14 For the present invention Figure 4 Enlarged view of point A in the middle;

[0047] Figure 15 This is a three-dimensional schematic diagram of the control mechanism of the present invention;

[0048] Figure 16 This is a three-dimensional schematic diagram of the electrical mechanism of the present invention.

[0049] In the diagram: 1. Support platform; 2. Walking mechanism; 21. Rectangular shell; 22. Sliding plate; 23. Support body; 24. Drive mechanism; 241. First motor; 242. Driving wheel; 243. Belt; 244. Driven wheel; 245. Rotating shaft; 25. Linkage mechanism; 251. Bearing; 252. First support shaft; 253. Second support shaft; 254. Mounting ring; 255. Roller; 256. Mounting block; 257. Spherical shaft; 258. Hemispherical wheel; 3. Fixing mechanism; 31. Suction cylinder; 32. First coil; 33. First spring; 34. First magnetic block; 4. Adjustment mechanism; 41. Rotating disk; 42. Operating lever; 43. Moving disk; 44. Ratchet block; 45. Second spring; 46. Ratchet ring assembly; 461. Ratchet ring; 4 62. Second coil; 463. Magnetic ring; 464. Protective shell; 465. Fixing plate; 5. Linkage mechanism; 51. First fixed shaft; 52. Connecting rod; 53. Second fixed shaft; 6. Electrical mechanism; 61. Mounting shell; 62. Sliding rheostat; 63. Actuating block; 7. Cleaning mechanism; 71. Circular shell; 72. Second motor; 73. Drive shaft; 74. Connecting shell; 75. Actuating component; 751. Gear; 752. Rewinding wheel; 753. Dust detector; 754. Cleaning strip; 76. Control mechanism; 761. Square shell; 762. Third coil; 763. Second magnetic block; 764. Rack; 765. T-shaped slider; 766. Guide rail block; 767. Third spring; 8. Main body mechanism; 81. Body plate; 82. Exhaust pipe. Detailed Implementation

[0050] 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.

[0051] Example 1

[0052] Please see Figures 1-3 , Figure 8 , Figure 9 , Figure 11 and Figure 12 A dust removal device for building ventilation ducts includes a support platform 1, a walking mechanism 2 fixedly installed on the outer side of the support platform 1, a fixing mechanism 3 fixedly connected to the inner side of the walking mechanism 2, an adjustment mechanism 4 rotatably connected to the upper side of the walking mechanism 2, a linkage mechanism 5 between the walking mechanism 2 and the adjustment mechanism 4, an electrical mechanism 6 fixedly installed on the walking mechanism 2, a main body mechanism 8 fixedly connected to the lower side of the support platform 1, and a cleaning mechanism 7 fixedly installed on one side of the main body mechanism 8.

[0053] The walking mechanism 2 includes a rectangular shell 21, a sliding plate 22, a support body 23, a drive mechanism 24, and a linkage mechanism 25. The rectangular shells 21 are fixedly connected to the outer side of the support platform 1. The sliding plate 22 is slidably connected to the inner side of the rectangular shell 21. The support body 23 is fixedly connected to the side of the sliding plate 22 away from the support platform 1. The drive mechanism 24 is fixedly installed on the inner side of the support body 23. The linkage mechanism 25 is fixedly connected to one end of the drive mechanism 24.

[0054] Furthermore, the drive mechanism 24 includes a first motor 241, a drive wheel 242, a belt 243, a driven wheel 244, and a rotating shaft 245. The first motor 241 is fixedly connected to the inner wall of the support body 23. The output shaft of the first motor 241 is fixedly connected to the drive wheel 242. The driven wheel 244 is also rotatably connected to the inner side of the support body 23. The drive wheel 242 and the driven wheel 244 are connected by a belt 243. The rotating shaft 245 is fixedly connected to the side of the driven wheel 244 away from the inner wall of the support body 23.

[0055] Furthermore, the linkage mechanism 25 includes a bearing 251, a first support shaft 252, a second support shaft 253, a mounting ring 254, a roller 255, a mounting block 256, a spherical shaft 257, and a hemispherical wheel 258. The inner side of the rotating shaft 245 is fixedly connected to the bearing 251. Two bearings 251 are provided; the inner side of one bearing 251 is fixedly connected to the first support shaft 252, and the inner side of the other bearing 251 is fixedly connected to the second support shaft 253. Mounting rings 254 are fixedly connected to the outer sides of both the first support shaft 252 and the second support shaft 253. A hemispherical wheel 258 is fixedly connected to the outer side of the mounting ring 254. A mounting block 256 is fixedly connected to the side of the first support shaft 252 near the second support shaft 253. A spherical shaft 257 is fixedly connected to the side of the second support shaft 253 near the first support shaft 252. The mounting block 256 is engaged with the spherical shaft 257. The spherical shaft 257 is rotatably connected to the first support shaft 252. Grooves corresponding to the spherical shaft 257 are provided on the first support shaft 252 and the mounting block 256. Rollers 255 are rotatably connected to the inner sides of the first support shaft 252 and the second support shaft 253.

[0056] After the equipment is adjusted, the first motor 241 is started. The output of the first motor 241 drives the drive wheel 242 to rotate. While the drive wheel 242 is rotating, it drives the driven wheel 244 to rotate synchronously through the transmission action of the belt 243. The driven wheel 244 drives the rotating shaft 245 to rotate. Then the rotating shaft 245 drives the first support shaft 252 and the second support shaft 253 to rotate. With the cooperation of the external system and the assistance of the rollers 255 and the bearings 251, the hemispherical wheel 258 is driven to rotate freely, thereby realizing the purpose of the equipment being able to move freely at multiple angles.

[0057] The roller 255, the first support shaft 252, the mounting block 256, the spherical shaft 257, and the second support shaft 253 are assembled into a whole. The mounting block 256 is composed of two semi-circular rings. The installation method of the first support shaft 252 and the second support shaft 253 is as follows: first, the second support shaft 253 is fixedly installed with the spherical shaft 257, then the spherical shaft 257 is inserted into the first support shaft 252, and finally the mounting block 256 is spliced ​​and fixed with the spherical shaft 257.

[0058] Example 2

[0059] Please see Figure 10 The difference between Example 2 and Example 1 is as follows:

[0060] Furthermore, the fixing mechanism 3 includes a suction cylinder 31, a first coil 32, a first spring 33, and a first magnetic block 34. The suction cylinder 31 is fixedly installed on the inner side of the hemispherical wheel 258. The first coil 32 is fixedly connected to the inner wall of the suction cylinder 31. The first magnetic block 34 is slidably connected to the inner side of the suction cylinder 31. The first spring 33 is fixedly connected between the first magnetic block 34 and the first coil 32.

[0061] The bottom opening of the suction cylinder 31 is made of rubber.

[0062] When the equipment stops moving, the external system controls the first coil 32 inside the suction cylinder 31 that is in contact with the ventilation duct to pass current, so that the first coil 32 generates a magnetic field force that attracts the first magnetic block 34 after the current is passed. The first magnetic block 34 compresses the first spring 33 and moves out toward the first coil 32, so that a negative pressure state is formed between the opening of the suction cylinder 31 and the inner wall of the duct, thereby achieving the purpose of firmly fixing the equipment.

[0063] Example 3

[0064] Please see Figures 5-8 The difference between Example 2 and Example 1 is as follows:

[0065] Furthermore, the adjustment mechanism 4 includes a rotating disk 41, an operating lever 42, a moving disk 43, a ratchet block 44, a second spring 45, and a ratchet ring assembly 46. The rotating disk 41 is rotatably connected to the upper side of the support platform 1. The operating lever 42 is fixedly connected to the upper side of the rotating disk 41. The moving disk 43 is fixedly connected to the outer side of the operating lever 42. The ratchet block 44 is rotatably connected to the moving disk 43. The second spring 45 is fixedly connected between the ratchet block 44 and the moving disk 43. The ratchet ring assembly 46 is provided on the outer side of the moving disk 43.

[0066] The ratchet ring assembly 46 includes a ratchet ring 461, a second coil 462, a magnetic ring 463, a protective shell 464, and a fixing plate 465. The ratchet ring 461 is provided on the outer side of the moving disc 43. The ratchet ring 461 has a ratchet groove corresponding to the ratchet block 44. The magnetic ring 463 is fixedly connected to the lower side of the ratchet ring 461. The second coil 462 is provided on the outer side of the magnetic ring 463. The protective shell 464 is fixedly connected to the outer side of the second coil 462. The fixing plate 465 is fixedly connected between the protective shell 464 and the rectangular shell 21. The operating lever 42 passes through the protective shell 464.

[0067] While the moving disk 43 rotates clockwise, current is passed through the second coil 462. After the second coil 462 is energized, it generates a magnetic field that attracts the magnetic ring 463, thereby fixing the ratchet ring 461. Under the action of the second spring 45 and the ratchet groove on the ratchet ring 461, the ratchet block 44 is continuously turned. At the same time, under the action of the ratchet block 44, the second spring 45 and the ratchet groove on the ratchet ring 461, the moving disk 43 is restricted from rotating counterclockwise. Moreover, when the moving disk 43 rotates clockwise, it has a locking effect, thereby achieving the purpose of adjusting and fixing the walking mechanism 2. When the walking mechanism 2 is adjusted inward, the current inside the second coil 462 is disconnected, so that the fixing of the ratchet ring 461 is released. Then, the operating lever 42 is manually operated to retract the walking mechanism 2.

[0068] Furthermore, the linkage mechanism 5 includes a first fixed shaft 51, a connecting rod 52, and a second fixed shaft 53. The first fixed shaft 51 is fixedly connected to the upper side of the sliding plate 22, and the second fixed shaft 53, which is evenly distributed, is fixedly connected to the lower side of the rotating disk 41. The connecting rod 52 is rotatably connected between the first fixed shaft 51 and the second fixed shaft 53. A rectangular groove corresponding to the first fixed shaft 51 is provided on the rectangular housing 21.

[0069] Depending on the size of the building's ventilation duct, manually rotate the operating lever 42 clockwise. As the operating lever 42 rotates, it drives the moving disc 43 and the rotating disc 41, which are fixedly connected to it, to rotate synchronously. While the rotating disc 41 rotates, it drives the connecting rod 52 to rotate through the action of the second fixed shaft 53 on it. This causes the connecting rod 52 to drive the sliding plate 22 to slide outward along the rectangular shell 21 through the first fixed shaft 51, thereby driving the walking mechanism 2 on all three sides to adjust outward as a whole.

[0070] Example 4

[0071] Please see Figure 4 , Figures 14-16 The difference between Example 4 and Example 3 is as follows:

[0072] Furthermore, the electrical mechanism 6 includes a mounting shell 61, a sliding rheostat 62, and a toggle block 63. The mounting shell 61 is fixedly connected to the inner wall of the rectangular shell 21, and the toggle block 63 is fixedly connected to the lower side of the sliding plate 22. The sliding rheostat 62 is fixedly connected to the inner bottom wall of the mounting shell 61, and the toggle block 63 slides on the sliding rheostat 62.

[0073] Furthermore, the main body 8 includes a body plate 81 and an exhaust pipe 82. The body plate 81 is fixedly connected to the lower side of the support platform 1, and the exhaust pipe 82 is fixedly installed on the lower side of the body plate 81.

[0074] The second motor 72 is started, which drives the drive shaft 73 to rotate. As the drive shaft 73 rotates, it drives the connecting shell 74, which is fixedly connected to it, thereby driving the cleaning strip 754 to rotate, thus achieving the purpose of cleaning the inside of the pipe. While cleaning, since the end of the exhaust pipe 82 is connected to an external fan, it performs an exhaust operation on the inside of the pipe, drawing out the airflow containing dust.

[0075] While the dust is being agitated, the dust detector 753 is electrically connected to the external fan. When the dust detector 753 detects the dust concentration, it transmits an electrical signal to the external control system. The external control system then controls the external fan's exhaust power to change positively with the dust concentration.

[0076] Furthermore, the cleaning mechanism 7 includes a circular shell 71, a second motor 72, a drive shaft 73, a connecting shell 74, an execution component 75, and a control mechanism 76. The circular shell 71 is fixedly connected to one side of the body plate 81, and the second motor 72 is also fixedly connected to one side of the body plate 81. The second motor 72 is located inside the circular shell 71. The output end of the second motor 72 is fixedly connected to the drive shaft 73. The end of the drive shaft 73 away from the second motor 72 is fixedly connected to the connecting shell 74. The execution component 75 and the control mechanism 76 are provided on the connecting shell 74.

[0077] Furthermore, the structure of the execution component 75 includes a gear 751, a take-up reel 752, a dust detector 753, and a cleaning strip 754. The gear 751 is rotatably connected to the inner side of the connecting housing 74, and the take-up reel 752 is fixedly connected to one side of the gear 751. The take-up reel 752 is rotatably connected to the inner wall of the connecting housing 74, and the cleaning strip 754 is wound around the outer side of the take-up reel 752.

[0078] The control mechanism 76 includes a square shell 761, a third coil 762, a second magnetic block 763, a rack 764, a T-shaped slider 765, a guide block 766, and a third spring 767. The square shell 761 is fixedly connected to the inner wall of the connecting shell 74. The guide block 766 is fixedly connected to the top inner wall of the square shell 761. The T-shaped slider 765 is slidably connected to the inner side of the guide block 766. The rack 764 is fixedly connected to the lower side of the T-shaped slider 765. The second magnetic block 763 is fixedly connected to one end of the rack 764. The third coil 762 is fixedly connected to the inner wall of the square shell 761. The third coil 762 corresponds to the second magnetic block 763. The third spring 767 is fixedly connected between the T-shaped slider 765 and the inner wall of the square shell 761. The rack 764 and the gear 751 are meshed.

[0079] When the sliding plate 22 drives the fixedly connected actuating block 63 to slide on the sliding rheostat 62, since the sliding rheostat 62 is electrically connected to the third coil 762, the sliding block 63 changes the internal resistance of the sliding rheostat 62 as it slides. The further the actuating block 63 slides outward, the smaller the internal resistance of the sliding rheostat 62 becomes, and the larger the current flowing into the third coil 762. After the current flows into the third coil 762, a magnetic field force is generated that repels the second magnetic block 763, which in turn pushes the rack 764 to slide along the guide rail block 766 through the T-shaped slider 765. As the rack 764 slides, it meshes with and drives the gear 751 to rotate.

[0080] Gear 751 drives take-up wheel 752 to rotate synchronously, so that the take-up wheel 752 releases the cleaning strip 754 wound on it while rotating. The length of the cleaning strip 754 is matched with the building ventilation duct, thus achieving the purpose of being able to adapt to various specifications of building ventilation ducts.

[0081] The specific usage and function of this embodiment are as follows:

[0082] In use, before cleaning the building ventilation ducts, place the device at the air outlet or inlet of the ventilation duct. Depending on the size of the ventilation duct, manually rotate the operating lever 42 clockwise. As the lever 42 rotates, it simultaneously drives the moving disc 43 and rotating disc 41, which are fixedly connected to it, to rotate synchronously. Simultaneously, the rotating disc 41 rotates, and through the action of its second fixed shaft 53, it drives the connecting rod 52 to rotate. This causes the connecting rod 52 to drive the sliding plate 22 to slide outwards along the rectangular shell 21 via the first fixed shaft 51, thereby causing the three-sided traveling mechanism 2 to adjust outwards as a whole. While the sliding plate 22 is adjusting outwards, the sliding plate... 22 drives the fixedly connected to-actuator 63 to slide on the sliding rheostat 62. Since the sliding rheostat 62 is electrically connected to the third coil 762, the sliding block 63 changes the internal resistance of the sliding rheostat 62 as it slides. The further the toggle block 63 slides outward, the smaller the internal resistance of the sliding rheostat 62 becomes, and the larger the current flows into the third coil 762. After the current flows into the third coil 762, a magnetic field force is generated that repels the second magnetic block 763, which in turn pushes the rack 764 to slide along the guide rail block 766 through the T-shaped slider 765. As the rack 764 slides, it meshes with and drives the gear 751 to rotate.

[0083] Gear 751 drives take-up wheel 752 to rotate synchronously, so that the take-up wheel 752 releases the cleaning strip 754 wound on it while rotating. The length of the cleaning strip 754 is matched with the building ventilation duct, thus achieving the purpose of being able to adapt to various specifications of building ventilation ducts.

[0084] While the moving disk 43 rotates clockwise, current is passed through the second coil 462. After the second coil 462 is energized, it generates a magnetic field that attracts the magnetic ring 463, thereby fixing the ratchet ring 461. Under the action of the second spring 45 and the ratchet groove on the ratchet ring 461, the ratchet block 44 is continuously turned. At the same time, under the action of the ratchet block 44, the second spring 45 and the ratchet groove on the ratchet ring 461, the moving disk 43 is restricted from rotating counterclockwise. Moreover, when the moving disk 43 rotates clockwise, it has a locking effect, thereby achieving the purpose of adjusting and fixing the walking mechanism 2. When the walking mechanism 2 is adjusted inward, the current inside the second coil 462 is disconnected, so that the fixing of the ratchet ring 461 is released. Then, the operating lever 42 is manually operated to retract the walking mechanism 2.

[0085] After the equipment is adjusted, the first motor 241 is started. The output of the first motor 241 drives the drive wheel 242 to rotate. While the drive wheel 242 is rotating, it drives the driven wheel 244 to rotate synchronously through the transmission action of the belt 243. The driven wheel 244 drives the rotating shaft 245 to rotate. Then the rotating shaft 245 drives the first support shaft 252 and the second support shaft 253 to rotate. With the cooperation of the external system and the assistance of the rollers 255 and the bearings 251, the hemispherical wheel 258 is driven to rotate freely, thereby realizing the purpose of the equipment being able to move freely at multiple angles.

[0086] Then the second motor 72 is started, which drives the drive shaft 73 to rotate. As the drive shaft 73 rotates, it drives the connecting shell 74 that is fixedly connected to it, thereby driving the cleaning strip 754 to rotate, thus achieving the purpose of cleaning the inside of the pipe. While cleaning, since the end of the exhaust pipe 82 is connected to an external fan, it performs an exhaust operation on the inside of the pipe, drawing out the airflow containing dust.

[0087] While the dust is being agitated, the dust detector 753 is electrically connected to the external fan. When the dust detector 753 detects the dust concentration, it transmits an electrical signal to the external control system. The external control system then controls the external fan's exhaust power to change positively with the dust concentration.

[0088] When the equipment stops moving, the external system controls the first coil 32 inside the suction cylinder 31 that is in contact with the ventilation duct to pass current, so that the first coil 32 generates a magnetic field force that attracts the first magnetic block 34 after the current is passed. The first magnetic block 34 compresses the first spring 33 and moves out toward the first coil 32, so that a negative pressure is formed between the opening of the suction cylinder 31 and the inner wall of the duct, thereby achieving the purpose of firmly fixing the equipment.

[0089] The above describes the overall working process of this equipment.

[0090] 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 dust removal device for building ventilation ducts, comprising a support platform (1), characterized in that: A walking mechanism (2) is fixedly installed on the outer side of the support platform (1), a fixing mechanism (3) is fixedly connected to the inner side of the walking mechanism (2), an adjustment mechanism (4) is rotatably connected to the upper side of the walking mechanism (2), a linkage mechanism (5) is provided between the walking mechanism (2) and the adjustment mechanism (4), an electrical mechanism (6) is also fixedly installed on the walking mechanism (2), a main body mechanism (8) is fixedly connected to the lower side of the support platform (1), and a cleaning mechanism (7) is fixedly installed on one side of the main body mechanism (8). The walking mechanism (2) includes a rectangular shell (21), a sliding plate (22), a support body (23), a drive mechanism (24), and a linkage mechanism (25). The outer side of the support platform (1) is fixedly connected to a uniformly distributed rectangular shell (21). The inner side of the rectangular shell (21) is slidably connected to a sliding plate (22). The side of the sliding plate (22) away from the support platform (1) is fixedly connected to a support body (23). The inner side of the support body (23) is fixedly installed with a drive mechanism (24). One end of the drive mechanism (24) is fixedly connected to a linkage mechanism (25).

2. The dust removal equipment for building ventilation ducts according to claim 1, characterized in that: The structure of the drive mechanism (24) includes a first motor (241), a drive wheel (242), a belt (243), a driven wheel (244), and a rotating shaft (245). The first motor (241) is fixedly connected to the inner wall of the support body (23). The output shaft of the first motor (241) is fixedly connected to the drive wheel (242). The driven wheel (244) is also rotatably connected to the inner side of the support body (23). The drive wheel (242) and the driven wheel (244) are connected by a belt (243). The rotating shaft (245) is fixedly connected to the side of the driven wheel (244) away from the inner wall of the support body (23).

3. The dust removal equipment for building ventilation ducts according to claim 2, characterized in that: The linkage mechanism (25) includes a bearing (251), a first support shaft (252), a second support shaft (253), a mounting ring (254), a roller (255), a mounting block (256), a spherical shaft (257), and a hemispherical wheel (258). The inner side of the rotating shaft (245) is fixedly connected to the bearing (251). Two bearings (251) are provided; the inner side of one bearing (251) is fixedly connected to the first support shaft (252), and the inner side of the other bearing (251) is fixedly connected to the second support shaft (253). Mounting rings (254) are fixedly connected to the outer sides of both the first support shaft (252) and the second support shaft (253). A hemispherical wheel (258) is fixedly connected to the outer side of the ring (254). A mounting block (256) is fixedly connected to the side of the first support shaft (252) near the second support shaft (253). A spherical shaft (257) is fixedly connected to the side of the second support shaft (253) near the first support shaft (252). The mounting block (256) is engaged with the spherical shaft (257). The spherical shaft (257) is rotatably connected to the first support shaft (252). Grooves corresponding to the spherical shaft (257) are provided on the first support shaft (252) and the mounting block (256). Rollers (255) are rotatably connected to the inner sides of the first support shaft (252) and the second support shaft (253).

4. A dust removal device for building ventilation ducts according to claim 3, characterized in that: The fixing mechanism (3) includes a suction cylinder (31), a first coil (32), a first spring (33), and a first magnetic block (34). The suction cylinder (31) is fixedly installed on the inner side of the hemispherical wheel (258), the first coil (32) is fixedly connected to the inner wall of the suction cylinder (31), the first magnetic block (34) is slidably connected to the inner side of the suction cylinder (31), and the first spring (33) is fixedly connected between the first magnetic block (34) and the first coil (32).

5. A dust removal device for building ventilation ducts according to claim 1, characterized in that: The adjustment mechanism (4) includes a rotating disk (41), an operating lever (42), a moving disk (43), a ratchet block (44), a second spring (45), and a ratchet ring assembly (46). The rotating disk (41) is rotatably connected to the upper side of the support platform (1). The operating lever (42) is fixedly connected to the upper side of the rotating disk (41). The moving disk (43) is fixedly connected to the outer side of the operating lever (42) along its axial direction. The ratchet block (44) is rotatably connected to the moving disk (43). The second spring (45) is fixedly connected between the ratchet block (44) and the moving disk (43). The ratchet ring assembly (46) is provided on the outer side of the moving disk (43). The structure of the ratchet ring assembly (46) includes a ratchet ring (461), a second coil (462), a magnetic ring (463), a protective shell (464), and a fixing plate (465). The ratchet ring (461) is provided on the outer side of the moving disc (43). The ratchet ring (461) has a ratchet groove corresponding to the ratchet block (44). The magnetic ring (463) is fixedly connected to the lower side of the ratchet ring (461). The second coil (462) is provided on the outer side of the magnetic ring (463). The protective shell (464) is fixedly connected to the outer side of the second coil (462). The fixing plate (465) is fixedly connected between the protective shell (464) and the rectangular shell (21). The operating rod (42) passes through the protective shell (464).

6. A dust removal device for building ventilation ducts according to claim 5, characterized in that: The linkage mechanism (5) includes a first fixed shaft (51), a connecting rod (52), and a second fixed shaft (53). The upper side of the sliding plate (22) is fixedly connected to the first fixed shaft (51), and the lower side of the rotating disk (41) is fixedly connected to the evenly distributed second fixed shafts (53). The first fixed shaft (51) and the second fixed shaft (53) are rotatably connected by a connecting rod (52). The rectangular shell (21) is provided with a rectangular groove corresponding to the first fixed shaft (51).

7. A dust removal device for building ventilation ducts according to claim 1, characterized in that: The electrical mechanism (6) includes a mounting shell (61), a sliding rheostat (62), and a toggle block (63). The mounting shell (61) is fixedly connected to the inner wall of the rectangular shell (21), and the toggle block (63) is fixedly connected to the lower side of the sliding plate (22). The sliding rheostat (62) is fixedly connected to the inner bottom wall of the mounting shell (61), and the toggle block (63) slides on the sliding rheostat (62).

8. A dust removal device for building ventilation ducts according to claim 1, characterized in that: The main body (8) includes a body plate (81) and an exhaust pipe (82). The body plate (81) is fixedly connected to the lower side of the support platform (1), and the exhaust pipe (82) is fixedly installed on the lower side of the body plate (81).

9. A dust removal device for building ventilation ducts according to claim 8, characterized in that: The cleaning mechanism (7) includes a circular shell (71), a second motor (72), a drive shaft (73), a connecting shell (74), an execution component (75), and a control mechanism (76). The circular shell (71) is fixedly connected to one side of the body plate (81), and the second motor (72) is also fixedly connected to one side of the body plate (81). The second motor (72) is located inside the circular shell (71). The output end of the second motor (72) is fixedly connected to the drive shaft (73). The end of the drive shaft (73) away from the second motor (72) is fixedly connected to the connecting shell (74). The execution component (75) and the control mechanism (76) are provided on the connecting shell (74).

10. A dust removal device for building ventilation ducts according to claim 9, characterized in that: The structure of the execution component (75) includes a gear (751), a take-up reel (752), a dust detector (753), and a cleaning strip (754). The gear (751) is rotatably connected to the inner side of the connecting shell (74), and the take-up reel (752) is fixedly connected to one side of the gear (751). The take-up reel (752) is rotatably connected to the inner wall of the connecting shell (74), and the cleaning strip (754) is wound around the outer side of the take-up reel (752). The control mechanism (76) comprises a square shell (761), a third coil (762), a second magnetic block (763), a rack (764), a T-shaped slider (765), a guide rail block (766), and a third spring (767). The square shell (761) is fixedly connected to the inner wall of the connecting shell (74). The guide rail block (766) is fixedly connected to the inner top wall of the square shell (761). The T-shaped slider (765) is slidably connected to the inner side of the guide rail block (766). A rack (764) is fixedly connected to the lower side of the T-shaped slider (765), and a second magnetic block (763) is fixedly connected to one end of the rack (764). A third coil (762) is fixedly connected to the inner wall of the square shell (761), and the third coil (762) corresponds to the second magnetic block (763). A third spring (767) is fixedly connected between the T-shaped slider (765) and the inner wall of the square shell (761). The rack (764) and the gear (751) are meshed together.

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