A glass curtain wall inner side cleaning device

Abstract

The application discloses a glass curtain wall inside cleaning device, belonging to the technical field of glass curtain wall cleaning, comprising a scrubbing mechanism movable along the curtain wall height direction, the scrubbing mechanism having a circular scrubbing belt capable of circulating rotation, and a width adjusting assembly connected to the scrubbing mechanism and used for changing the contact length of the scrubbing belt with the glass; the width adjusting assembly can adjust the contact length of the scrubbing belt according to the transverse size of the curtain wall operation area, so that the scrubbing belt covers the entire width of the operation area at one time in the single height direction movement; through the width adjusting assembly, the contact length of the scrubbing belt with the glass can be accurately and continuously adjusted according to the transverse size of the curtain wall operation area, so that the scrubbing belt covers the entire width of the operation area at one time in the single top-down movement, the water marks, missed scrubbing areas or repeated marks caused by multiple splicing are eliminated, and the entire glass is uniformly cleaned without marks.

Description

Technical Field

[0001] This invention relates to the field of glass curtain wall cleaning technology, specifically to a cleaning device for the inner side of a glass curtain wall. Background Technology

[0002] With the development of modern building technology, glass curtain walls have been widely used in the facade decoration of high-rise buildings due to their aesthetic appeal and good light transmission. However, the cleaning and maintenance of glass curtain walls has always been a challenge in property management and daily cleaning.

[0003] In recent years, window cleaning robots have been increasingly applied in the field of glass cleaning. Whether it's an adhesive robot for exterior curtain walls or a portable robot for interior glass, their cleaning mechanisms generally employ fixed-width circular or square disc-shaped cleaning heads. However, in actual curtain wall structures, the width of the working area between two vertical joists is often much larger than the effective working width of the robot's cleaning head. Therefore, when cleaning a complete working area, the robot must move back and forth horizontally multiple times in a zigzag or N-shaped path, using multiple passes to cover the entire width.

[0004] This horizontal reciprocating operation mode presents the following technical problems: First, the cleaning path is complex, and cleaning a single area is time-consuming and inefficient. Second, watermarks, missed areas, or repeated marks are easily left at the joints between adjacent movements, making it impossible to achieve seamless and uniform cleaning of the entire area. Third, the cleaning width is fixed and cannot be adjusted, making it unsuitable for curtain wall units of different widths or for matching the actual size of the work area. Furthermore, the robot needs to frequently turn and reposition during its reciprocating motion, placing high demands on sensors and algorithms, and making it prone to missing areas at boundaries.

[0005] In summary, the fundamental technical flaw of existing window cleaning robots lies in their fixed cleaning width, which is far smaller than the actual width of the curtain wall work area. This necessitates a reliance on horizontal reciprocating motion during the cleaning process, making it impossible to cover the entire width of the work area in one go or complete the cleaning from top to bottom in one continuous motion. This deficiency severely restricts the consistency of cleaning efficiency and cleaning results. Therefore, there is an urgent need for a curtain wall interior cleaning device that can adaptively adjust the cleaning range according to the width of the work area and achieve full-width coverage in one go. Summary of the Invention

[0006] The present invention addresses the aforementioned shortcomings of the existing technology by providing a glass curtain wall interior cleaning device. This device can precisely and continuously adjust the contact length between the wiping belt and the glass according to the lateral dimensions of the curtain wall work area, so that the wiping belt can cover the entire width of the work area in one go during a single top-to-bottom movement, thereby shortening the cleaning time of a single area and improving the cleaning effect.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A cleaning device for the interior of a glass curtain wall includes a scrubbing mechanism movable along the height of the curtain wall. The scrubbing mechanism has a rotatable annular scrubbing belt and a width adjustment component connected to the scrubbing mechanism for changing the contact length between the scrubbing belt and the glass. The width adjustment component can adjust the contact length of the scrubbing belt according to the lateral dimensions of the curtain wall working area so that the scrubbing belt covers the entire width of the working area in one movement along the height direction.

[0008] Preferably, the cleaning mechanism further includes a movable base, which houses a drive mechanism for rotating the cleaning belt and a tensioning mechanism. The tensioning mechanism has an elastically extendable cleaning belt support surface, used to accommodate or release the path length surplus generated by the change in contact length of the cleaning belt when the width adjustment component changes the contact length between the cleaning belt and the glass, while maintaining the tension of the cleaning belt. The width adjustment component is mounted on the movable base.

[0009] Preferably, the width adjustment assembly includes a bidirectional lead screw rotatably mounted on a movable seat and a guide rod fixedly mounted on the movable seat, with a knob at one end of the bidirectional lead screw; the scrubbing mechanism also includes two belt support mechanisms located on both sides of the scrubbing belt, each belt support mechanism including an upper push rod threadedly engaged with the bidirectional lead screw, a lower push rod slidably engaged with the guide rod, a support rod connected to the upper push rod and the lower push rod, and a support wheel and a support plate disposed at the end of the support rod for supporting the scrubbing belt.

[0010] Preferably, the movable seat is provided with a brush belt mechanism for online cleaning of the scrubbing belt. The brush belt mechanism includes a scrubbing box, a brush and a squeegee disposed in the scrubbing box, and a water supply box and a water receiving box connected to the scrubbing box. During the cyclic rotation, the scrubbing belt passes through the brush cleaning area and the squeegee drying area in sequence.

[0011] Preferably, the brush box is provided with a partition, and there is a gap between the bottom of the partition and the bottom surface of the brush box. The brush and the squeegee are respectively arranged on both sides of the partition. The squeegee has a U-shaped structure with the opening facing downward, and a squeegee strip is provided on the inner wall of the squeegee.

[0012] Preferably, the water receiving box is equipped with a removable filter screen, which divides the water receiving box into a sewage tank and a clean water tank; the bottom of the washing box is equipped with a drain pipe, and the water receiving box is equipped with a water inlet that connects to the drain pipe; the water supply box is equipped with a first water pump, and the inlet of the first water pump is connected to the clean water tank through a water pumping pipe, and the clean water tank is equipped with a sealing structure that automatically closes when the water pumping pipe is pulled out.

[0013] Preferably, a floating ring is fitted on the outer side of the drain pipe, and a first spring is connected between the floating ring and the bottom of the scrubbing box. A lower sealing ring is provided at the bottom of the floating ring. The water inlet is located in the relief groove at the upper end of the sewage tank. When the water inlet box is installed in place, the relief groove pushes the floating ring upward and presses the lower sealing ring against the upper end face of the water inlet to form a seal.

[0014] Preferably, a squeegee mechanism is provided above the scrubbing belt. The squeegee mechanism includes a main squeegee and side squeegees slidably mounted at both ends of the main squeegee. The side squeegees are connected to the support plate of the belt support mechanism via a synchronizing rod. When the width adjustment component adjusts the contact length of the scrubbing belt, the side squeegees move synchronously with the support plate.

[0015] Preferably, it also includes a base, the upper end of which is connected to a lifting frame, the height of which is adjustable; the wiping mechanism is mounted on the lifting frame and can move up and down along the lifting frame; the lower end of the base is provided with casters with brakes, and the upper end of the base is provided with a column and a battery.

[0016] Preferably, the side wall of the column is provided with a guide sleeve, and a telescopic support arm is inserted inside the guide sleeve. The end of the support arm is vertically connected to a positioning screw, and the end of the positioning screw is provided with a top block for tightening the vertical keel of the curtain wall. The upper end of the lifting frame is provided with a telescopic positioning rod, and the lower end of the positioning rod is provided with a positioning plate for tightening the horizontal keel of the curtain wall.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. Achieve full-width adaptive coverage of the work area and establish a vertical single-pass cleaning mode. Through the width adjustment component, the contact length between the cleaning belt and the glass can be precisely and continuously adjusted according to the lateral dimensions of the curtain wall work area, allowing the cleaning belt to cover the entire width of the work area in a single top-to-bottom movement. This application eliminates the "Z" or "N" shaped horizontal reciprocating path required by existing window cleaning robots, thereby eliminating watermarks, missed areas, or repeated marks caused by multiple splicing operations, achieving traceless and uniform cleaning of the entire glass panel. Compared with reciprocating operations, it shortens the cleaning time for a single area, and the consistency of the cleaning effect is significantly better than any cleaning equipment that relies on splicing cleaning.

[0018] 2. The tensioning mechanism and width adjustment component work together to achieve automatic compensation for changes in the internal path length of the scrubbing belt during contact length adjustment and ensure stable operation throughout the process. When the width adjustment component changes the contact length between the scrubbing belt and the glass, the path length of the scrubbing belt in the internal loop of the moving seat changes accordingly. The tensioning mechanism has an elastically extendable scrubbing belt support surface, which can automatically accommodate or release the path length surplus caused by changes in contact length, and always maintain a constant tension. The tensioning mechanism's function of accommodating and releasing the path length surplus ensures that the scrubbing belt maintains an appropriate tension during contact length adjustment, neither too tight, which would hinder rotation, nor too loose, which would lead to poor adhesion, thus ensuring the complete realization of the width adjustment function. The coordinated operation of the width adjustment component and the tensioning mechanism enables the scrubbing belt to be continuously adjusted over a wide range according to the width of the working area and maintain stable operation.

[0019] 3. The online self-cleaning system and the cyclic rotation of the wiping belt work synergistically to achieve continuous self-cleaning of the wiping belt and prevent secondary pollution. The wiping belt is driven by a drive mechanism within the moving seat, circulating and passing sequentially through the brush cleaning area and the squeegee drying area in the brush box. Each cycle of the wiping belt completes a self-cleaning cycle. The synergy between the self-cleaning system and the cyclic rotation ensures that the wiping belt remains clean throughout long-term, large-area cleaning processes, preventing it from becoming a source of contamination due to saturation and preventing secondary adhesion of stains to the glass surface. Simultaneously, the cyclic rotation ensures that the self-cleaning system provides continuous and thorough cleaning of the wiping belt.

[0020] 4. The follow-up squeegee mechanism and the width adjustment component work together to achieve automatic matching of the squeegee area with the cleaning width and full-width drying. When the width adjustment component changes the contact length of the squeegee strip, the side squeegee moves synchronously with the support plate, ensuring that the squeegee area always completely covers the cleaning area. It is this linkage structure that allows the squeegee area to automatically and accurately match the cleaning width, avoiding water stains due to incomplete coverage and preventing scratches or liquid splashes caused by exceeding the glass edge.

[0021] 5. The water circulation filtration system and quick-release sealing structure work together to achieve long-term continuous operation and convenient, leak-free maintenance. Wastewater from washing flows through the drain pipe into the wastewater tank of the water collection box, is filtered by the filter screen, and then enters the clean water tank. It is then pumped back to the water supply box for reuse by the first water pump. The floating ring on the drain pipe and the relief groove at the water inlet form a butt seal, and the water inlet has a spring-loaded sealing plug, enabling plug-and-play operation and self-sealing upon removal. The water circulation system and quick-release sealing structure work together to allow the device to clean continuously for extended periods without interrupting water replenishment, while the water collection box is easy to assemble and disassemble without leakage. This design significantly improves actual operating efficiency and ease of use.

[0022] 6. Multi-point positioning and the synergistic effect of the lifting frame enable stable, non-adhesive operation. A multi-point support system is formed by the casters at the bottom of the base, the top block at the end of the telescopic support arm (tightening the vertical keel), and the positioning plate at the top of the lifting frame (tightening the horizontal keel). This system precisely positions the device, allowing the cleaning mechanism to move accurately in a straight line along the lifting frame. It is this synergy between the positioning system and the lifting frame that ensures the device remains stable during cleaning, guaranteeing even contact between the cleaning belt and the glass, avoiding uneven cleaning or glass damage caused by shaking or displacement. Simultaneously, the lifting frame ensures the precise linear movement trajectory of the cleaning mechanism from top to bottom. This synergistic cooperation allows the device to operate completely without relying on vacuum adsorption or magnetic coupling, unaffected by glass thickness, surface particles, or sealing strips, exhibiting strong adaptability. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the base structure; Figure 4 This is a structural schematic diagram of the lifting frame; Figure 5 This is a schematic diagram of the positioning rod. Figure 6 This is a schematic diagram of the front structure of the scrubbing mechanism; Figure 7 This is a schematic diagram of the reverse side structure of the scrubbing mechanism; Figure 8 This is a top view of the scrubbing mechanism; Figure 9 This is a schematic diagram of the internal structure of the scrubbing mechanism; Figure 10 This is a schematic diagram of the tensioning mechanism; Figure 11 This is a schematic diagram of the support belt mechanism; Figure 12 This is a schematic diagram of the wiper mechanism. Figure 13 Schematic diagram of the brush belt mechanism Figure 1 ; Figure 14 Schematic diagram of the brush belt mechanism Figure 2 ; Figure 15 This is a schematic diagram of the drainage pipe structure; Figure 16 This is a schematic diagram of the squeegee brush structure; Figure 17 This is a schematic diagram of the water receiving box. Figure 18This is a schematic diagram of the structure of the water receiving box and the water pumping pipe. Figure 19 This is a schematic diagram of the structure when the present invention is used. Figure 1 ; Figure 20 This is a schematic diagram of the structure when the present invention is used. Figure 2 ; In the diagram: 1-Base; 101-Moving wheel; 102-Column; 103-Positioning screw; 104-Top block; 105-Support arm; 106-Guide sleeve; 107-Positioning bolt; 108-Support frame; 109-Electric push rod; 110-First slider; 111-Control panel; 112-Handle; 2-Lifting frame; 201-Lead screw; 202-First guide rail; 203-Second guide rail; 204-First motor; 205-Positioning rod; 206-Rotating block; 207-Threaded rod; 208-Telescopic rod; 209-Positioning plate; 3-Washing mechanism 301-Moving seat; 302-Second slider; 303-Nut sleeve; 304-Knob; 305-Double-actuated screw; 306-Scrubbing belt; 307-Guide rod; 308-Support plate; 309-Locking bolt; 310-Upper push rod; 311-Support rod; 312-Support column; 313-Push plate; 314-Wheel seat; 315-Support wheel; 316-Support plate; 317-Fixing rod; 318-Guide wheel; 319-Lower push rod; 320-Third motor; 321-Drive wheel; 322-Pressure wheel; 4-Water supply box; 401-Sealing cover; 402 403-First water pump; 404-Second water pump; 405-Pump pipe; 406-Sealing ring; 407-Connecting pipe; 5-Water receiving box; 501-Water inlet; 502-Groove groove; 503-Cover plate; 504-Sewage tank; 505-Filter screen; 506-Hook bar; 507-Clean water tank; 508-Outlet pipe; 509-Third spring; 510-Outlet hole; 511-Sealing plug; 512-Pump pipe; 6-Scrubber box; 601-Second motor; 602-Brush; 603-Sprayer head; 604-Baffle; 605-Squeegee brush; 6 06-Wipe strip; 607-Drain pipe; 608-Upper sealing ring; 609-Floating ring; 610-Lower sealing ring; 611-First spring; 7-Wipe mechanism; 701-Fixed frame; 702-Main wiper strip; 703-Side wiper strip; 704-Sliding frame; 705-Synchronizing rod; 8-Tensioning mechanism; 801-Top plate; 802-Positioning post; 803-Guide plate; 804-Guide hole; 805-Second spring; 806-Tensioning block; 807-Baffle; 808-Guide block; 9-Vertical keel; 10-Horizontal keel; 11-Glass; 12-Battery. Detailed Implementation

[0024] 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.

[0025] like Figure 1 , Figure 2 As shown, a glass curtain wall interior cleaning device includes a base 1, with a lifting frame 2 connected to the upper end of the base 1. The height of the lifting frame 2 is adjustable. The lifting frame 2 is equipped with a scrubbing mechanism 3 that can move up and down. The scrubbing mechanism 3 includes a movable seat 301 connected to the lifting frame. One end of the movable seat 301 extends out with a rotatable scrubbing belt 306. The length of the scrubbing belt 306 in contact with the glass is adjustable, and the scrubbing belt has a self-cleaning function.

[0026] like Figure 3 As shown, the base 1 is a welded steel pipe frame with a steel plate on the upper end. Each of the four corners of its lower surface is equipped with a universal wheel 101 with a brake. When the brake pedal is pressed, the wheel is locked to prevent slippage during operation.

[0027] A vertical column 102 is welded and fixed to each of the left and right sides of the upper surface of the base 1. The two columns 102 are parallel to each other and are both square steel tubes. A handle 112 is connected between the two columns 102, and the middle of the handle 112 is covered with a non-slip rubber sleeve. A control panel 111 is installed above the handle 112. The control panel 111 is connected to the battery 12 and all electric components via cables. The battery 12 is a lithium battery pack, which is placed in the battery box on the upper surface of the base 1. The battery box is welded and fixed to the base 1, and the box cover can be locked.

[0028] Each column 102 has a guide sleeve 106 welded to its side wall. The guide sleeve 106 is a long sleeve with a rectangular cross-section. A support arm 105 is inserted inside each guide sleeve 106. The support arm 105 is a rectangular steel tube, and its outer wall is slidably fitted with the inner wall of the guide sleeve 106, allowing it to be pulled left and right. Each guide sleeve 106 has a threaded through hole on its side wall, in which a positioning bolt 107 is installed. After tightening, the bolt presses against the outer wall of the support arm 105, thereby locking the extension length of the support arm 105.

[0029] Each support arm 105 has a nut seat vertically welded to one end, and a positioning screw 103 is internally threaded onto the nut seat. The positioning screw 103 is perpendicular to the support arm 105. A top block 104, which is a circular rubber block, is installed at the end of the positioning screw 103. Rotating the positioning screw 103 adjusts the front and rear position of the top block 104, so that the top blocks 104 on the two support arms 105 respectively abut against the vertical ribs 9 on both sides of the glass 11, thereby achieving the positioning of the device.

[0030] A support frame 108 is welded to the top of both columns 102. The support frame 108 has a U-shaped structure. Two vertical first sliders 110 are fixed to each of the two side walls of the support frame 108 by screws. The first sliders 110 are linear guide sliders. Two first guide rails 202 are fixed at corresponding positions on the side wall of the lifting frame 2, and the first guide rails 202 slide up and down along the first sliders 110.

[0031] An electric push rod 109 is mounted on the side wall of the support frame 108 via a bracket. The end of the piston rod of the electric push rod 109 is connected to the lifting frame 2 via a pin. When the electric push rod 109 extends or retracts, it drives the lifting frame 2 to move up and down relative to the support frame 108, thereby adjusting the overall height.

[0032] like Figure 4 , Figure 5 As shown, a positioning rod 205 is welded to the top of the lifting frame 2. The positioning rod 205 is a rectangular steel tube that extends horizontally to the right. A rotating block 206 is fixed to one end of the positioning rod 205, and a threaded rod 207 is connected to the rotating block 206. A telescopic rod 208 is slidably inserted into the other end of the positioning rod 205. The telescopic rod 208 has an internal thread that mates with the threaded rod 207. The rotating block 206 can rotate the threaded rod 207, driving the telescopic rod 208 to move back and forth. A positioning plate 209 is welded to the lower surface of the end of the telescopic rod 208 away from the lifting frame. The positioning plate 209 presses against the side wall of the horizontal keel 10 above the glass 11 to position the upper end of the lifting frame and improve stability.

[0033] The side wall of the lifting frame 2 is fixed with two vertical second guide rails 203. The second guide rails 203 are linear guide rails used to guide the lifting of the scrubbing mechanism 3.

[0034] A lead screw 201 is vertically mounted inside the lifting frame 2. The upper end of the lead screw 201 is connected to the output shaft of the first motor 204 via a coupling. The first motor 204 is a servo motor and is fixed to the motor mount at the top of the lifting frame 2 with screws. The lower end of the lead screw 201 is fixed to the bottom of the lifting frame 2 via a bearing seat. The lead screw 201 is a ball screw, and a nut sleeve 303 is fitted onto it. The outer wall of the nut sleeve 303 is fixedly connected to the left side wall of the moving base 301 with screws.

[0035] like Figure 6As shown, the movable seat 301 is an aluminum alloy or plastic housing, and a second slider 302 is fixed to its side wall. The second slider 302 is slidably engaged with the second guide rail 203. When the first motor 204 drives the lead screw 201 to rotate, the nut sleeve 303 drives the movable seat 301 to move up and down along the second guide rail 203, realizing the precise lifting and lowering of the scrubbing mechanism 3. Since the contact length of the scrubbing belt 306 has been pre-adjusted to cover the width of the entire working area by the width adjustment component, the cleaning of the area can be completed in one go without horizontal reciprocating motion during a single top-to-bottom movement of the movable seat 301.

[0036] The movable seat 301 is a closed housing with two elongated outlets on its side wall through which the wiping belt 306 extends. The wiping belt 306 is a ring-shaped fiber belt made of microfiber mop cloth (similar to the absorbent fiber material of a sponge mop or wringer), possessing excellent water absorption and cleaning power, and a soft surface that will not damage the glass. The outer surface of the wiping belt 306 is used to wipe the glass 11, while the inner surface wraps around the wheels and tensioning mechanism.

[0037] like Figure 6 , Figure 7 As shown, a bidirectional lead screw 305 and a guide rod 307 are respectively installed on the upper and lower side walls of the movable seat 301. Both ends of the bidirectional lead screw 305 are mounted on the side walls of the movable seat 301 via bearings, with one end extending out of the movable seat 301 and fixed with a knob 304. The middle section of the bidirectional lead screw 305 is an optical axis, with trapezoidal threads of opposite directions machined on both sides. The guide rod 307 is a parallel optical axis, with both ends fixed to the side walls of the movable seat 301. The bidirectional lead screw 305, the knob 304, and the two support mechanisms described below together constitute the width adjustment assembly of the present invention, used to precisely adjust the contact length between the cleaning belt 306 and the glass 11 according to the lateral dimensions of the curtain wall working area (e.g., the actual span between two vertical keels), so that the cleaning belt covers the entire width of the working area in one go.

[0038] The movable seat 301 has a support belt mechanism on each of its front and rear sides. For example... Figure 8 , Figure 11 As shown, each support mechanism includes: upper push rod 310, lower push rod 319, support rod 311, push plate 313, wheel seat 314, support wheel 315, support column 312, and support plate 316.

[0039] The upper push rod 310 is a metal block with a threaded hole that engages with the corresponding thread on the bidirectional lead screw 305. The lower push rod 319 is a metal block with a smooth hole that slides into the guide rod 307. The upper push rod 310 and the lower push rod 319 are welded to the end of the support rod 311.

[0040] A push plate 313, which is a vertical steel plate, is welded to the other end of the support rod 311. A wheel seat 314, which is a U-shaped bracket, is fixed to the side of the push plate 313 by screws. A support wheel 315 is installed in the opening of the support plate 313 via a shaft. The support wheel 315 is a nylon wheel with grooves on its surface to mate with the scrubbing belt.

[0041] A support column 312, which is made of round steel, is vertically welded to the side wall of the strut 311. A support plate 316, which is made of flat steel plate, is welded to the end of the support column 312. The support plate 316 supports the scrubbing belt 306 from the back and prevents the scrubbing belt 306 from collapsing on the working surface.

[0042] When knob 304 is turned, the two-way lead screw 305 drives the two upper push rods 310 to move towards or away from each other, which in turn drives the entire support belt mechanism to move via support rod 311, thereby changing the distance between the two support rollers 315. The distance between the support rollers 315 determines the length of the cleaning belt 306 in contact with the glass 11.

[0043] like Figure 9 As shown, two tensioning mechanisms 8 are provided and installed inside the movable seat 301 to increase the length adjustment range of the scrubbing belt 306. The two tensioning mechanisms have identical structures; one of them is described below: like Figure 10 As shown, the tensioning mechanism 8 includes: a top plate 801, a guide plate 803, a tensioning block 806, etc.

[0044] The top plate 801 is welded perpendicularly to the guide plate 803 at both ends, and the two guide plates 803 are parallel and opposite to each other. Each guide plate 803 has an elongated guide hole 804.

[0045] A tensioning block 806 is provided between the two guide plates 803. The tensioning block 806 is a nylon block, and each side of the tensioning block 806 has a guide block 808. The guide block 808 is inserted into the guide hole 804 and can slide along the guide hole 804. The side of the tensioning block 806 that supports the scrubbing belt 306 is an arc surface.

[0046] Positioning posts 802 are provided on the side walls of the top plate 801 and the tensioning block 806. A second spring 805 is sleeved between the two positioning posts. The second spring 805 is a compression spring that always pushes the tensioning block 806 away from the top plate 801.

[0047] A baffle 807 is connected to one end of the guide plate 803 away from the top plate 801. The baffle 807 is located on both sides of the scrubbing belt 306 in the width direction and is used to limit the lateral movement of the scrubbing belt 306.

[0048] When the spacing of the support mechanism is adjusted, the contact length between the cleaning belt 306 and the glass changes. The two tensioning mechanisms work together, and the tensioning block 806 automatically slides up and down along the guide hole 804 under the action of the second spring 805, maintaining a constant tension on the cleaning belt 306 and increasing the adjustable length range of the cleaning belt 306.

[0049] The movable seat 301 also houses multiple guide wheels 318. These guide wheels 318 are grooved nylon wheels, fixed to the side wall of the movable seat 301 via axles, and are positioned at various turns in the wiping belt 306 loop, ensuring the wiping belt 306 follows a predetermined path. The movable seat 301 also contains a drive wheel 321 and a pressure wheel 322 that engages with it. The drive wheel 321 and pressure wheel 322 clamp the wiping belt 306. A third motor 320, connected to the drive wheel 321, is mounted on the side wall of the movable seat 301, driving the wiping belt 306 to rotate. To better rotate the wiping belt, the drive wheel 321 is preferably a gear, and a ring-shaped flexible toothed rack is laid on the inner side wall of the wiping belt, allowing for better rotation through the meshing of the teeth.

[0050] The self-cleaning system includes a brush box 6, a water supply box 4, a water receiving box 5, and related pipes, all of which are installed inside the movable base 301.

[0051] The scrubbing box 6 is a plastic box that is fixed inside the movable base 301 with screws. A drain pipe 607 is welded to the lowest point of the bottom of the scrubbing box 6 for draining wastewater.

[0052] like Figure 14 As shown, a vertical partition 604 is welded to the center of the interior of the brush box 6, dividing the brush box 6 into a left cavity and a right cavity. A 15mm water passage gap is left between the bottom of the partition 604 and the bottom surface of the brush box 6.

[0053] like Figure 13 As shown, two brushes 602 are installed inside the right cavity. Each brush 602 is a cylindrical nylon brush, with its shaft mounted inside the brush box 6 via bearings at both ends. A gear is fixed to the shaft of each brush 602, and the two gears mesh with each other. The shaft of one brush 602 is connected to the output shaft of a second motor 601 via a synchronous belt. The second motor 601 is fixed to the outer wall of the brush box 6. A nozzle 603 is also fixed to the inner wall of the right cavity, with its nozzle facing the contact area between the brush 602 and the scrubbing belt 306.

[0054] A 605 squeegee is installed in the left cavity. For example... Figure 16As shown, the wiping brush 605 is a one-piece silicone component in the shape of a "U" shaped groove. The wiping brush 605 is fixed to the top of the left cavity with screws, and its groove opening faces downward. A wiping strip 606 is attached to the inner wall of the groove. The wiping strip 606 is a polyurethane rubber strip, and its cutting edge is in contact with the surface of the wiping belt 306.

[0055] The movement path of the scrubbing belt 306 is as follows: First, it enters the right cavity of the scrubbing box 6, passes between the two rotating brushes 602, and is simultaneously sprayed with water by the nozzle 603; then it passes through the partition 604, passes through the squeegee 605, and the squeegee 606 removes excess water and dirt from the surface of the scrubbing belt 306.

[0056] A drain pipe 607 is welded to the lowest point of the bottom of the brush box 6 (below the right cavity brush 602), and the drain pipe 607 extends vertically downwards from the bottom surface of the brush box 6. The lower inner wall of the brush box 6 slopes from left to right at an angle of about 5° to facilitate the flow of sewage to the drain pipe 607.

[0057] The water supply box 4 is a transparent plastic box, fixed to the top of the washing box 6. The upper end of the water supply box 4 is provided with a water inlet, and a sealing cap 401 is installed on the water inlet. The sealing cap 401 is locked by threads and has a vent valve or vent hole.

[0058] Two miniature diaphragm pumps are installed on the bottom surface of the inner cavity of the water supply box 4: a first water pump 402 and a second water pump 403. The outlet of the first water pump 402 is connected to the inside of the water supply box 4 via a hose (for replenishing the water supply box with filtered water). The inlet of the second water pump 403 is located at the bottom of the water supply box 4 (with a coarse filter screen), and the outlet is connected to the nozzle 603 inside the brush box 6 via a PU tube.

[0059] A support plate 308 is welded to the outer bottom of the movable seat 301. The support plate 308 is an L-shaped bent steel plate with an inlet at the front end and a positioning plate at the rear end. Locking bolts 309 are installed on the side wall of the support plate 308.

[0060] The water receiving box 5 is a transparent plastic box that can be horizontally slid into the tray 308 from the inlet of the tray 308. Then, tighten the locking bolt 309 so that the end of the bolt presses against the side wall of the water receiving box 5 to fix it.

[0061] The water receiving box 5 has a cover plate 503 at its upper end. The rear end of the cover plate 503 is integrally connected to the side wall of the water receiving box 5 by a thin-walled hinge, and can be flipped upwards to open. The front end of the cover plate 503 is engaged with the hook strip 506 on the front side wall of the water receiving box 5. A silicone sealing strip is pressed between the cover plate 503 and the upper end face of the water receiving box 5.

[0062] The water receiving box 5 has an internal slot into which a filter screen 505 is inserted. The frame of the filter screen 505 is a stainless steel stamped part, with guide strips on both sides of the frame for insertion into the slot. The filter screen 505 is a double-layer 304 stainless steel woven mesh or filter cotton. The filter screen 505 divides the water receiving box 5 into a wastewater tank 504 and a clean water tank 507.

[0063] like Figure 17 As shown, a clearance groove 502 is provided at the upper end of the sewage tank 504. The inlet of the clearance groove 502 is inclined, and a water inlet 501 is provided inside the clearance groove 502, with the water inlet 501 facing upwards. Figure 15 As shown, a floating ring 609 is fitted on the outer wall of the drain pipe 607. The floating ring 609 is a nylon ring, and its inner wall is embedded with an upper sealing ring 608, which slides and seals against the outer wall of the drain pipe 607. A lower sealing ring 610 is embedded at the bottom of the floating ring 609. A first spring 611 connects the upper end face of the floating ring 609 to the bottom of the scrubbing box 6. When the water receiving box 5 is not installed, the first spring 611 presses the floating ring 609 to its lowest position; when the water receiving box 5 is inserted into the tray 308 and pushed down, the floating ring 609 cooperates with the relief groove 502, and the bottom of the relief groove 502 lifts the floating ring 609, compressing the first spring 611, so that the lower sealing ring 610 is pressed tightly against the upper edge of the water inlet 501, forming a seal. At this time, the sewage flowing out of the drain pipe 607 enters the sewage tank 504 through the water inlet 501.

[0064] A water inlet 512 is located on the side wall of the water purification tank 507. The water inlet 512 is a round hole with an embedded rubber sealing ring. An outlet pipe 508 is fixed inside the water purification tank 507 near the water inlet 512. The outlet pipe 508 is a PE pipe, with one end closed and the other end connected to the water inlet 512. The inner diameter of the outlet pipe 508 is larger than that of the water inlet 512. Four outlet holes 510 are located on the pipe wall of the outlet pipe 508 near the water inlet 512. A sealing plug 511, a rubber cylinder, is installed inside the outlet pipe 508. A third spring 509 connects the sealing plug 511 to the closed end of the outlet pipe 508. When the third spring 509 is compressed, it pushes the sealing plug 511 towards the water inlet 512, thus blocking the water inlet 512.

[0065] like Figure 18As shown, the inlet of the first water pump 402 is connected to a suction pipe 404, and the other end of the suction pipe 404 is connected to a connecting pipe 407. The connecting pipe 407 is a brass pipe, the outer diameter of which matches the inner diameter of the suction port 512, and a sealing ring 405 (silicone O-ring) is embedded in the outer wall of the pipe. A push rod 406 is fixed in the center of the inside of the connecting pipe 407. The push rod 406 is a thin stainless steel rod and is connected to the inner wall of the connecting pipe 407 through a cross bracket. When the water receiving box 5 is installed in place, the connecting pipe 407 is inserted into the suction port 512, and at the same time, the push rod 406 is inserted into the outlet pipe 508 and pushes the sealing plug 511, causing the sealing plug 511 to compress the third spring 509 and move away from the outlet hole 510, opening the passage. At this time, the water in the clean water tank 507 is sucked into the first water pump 402 through the outlet hole 510, the suction port 512, the connecting pipe 407, and the suction pipe 404, and then pumped into the water supply box 4 for circulation. When the water collection box 5 is disassembled, the connecting pipe 407 is pulled out, the third spring 509 pushes the sealing plug 511 to reset, and automatically closes the water outlet 510 to prevent water from leaking out of the clean water tank 507.

[0066] like Figure 12 As shown, the wiping mechanism 7 is installed on one side of the movable seat 301, above the wiping belt 306, and is used to scrape off residual water stains on the glass 11.

[0067] The fixing rod 317 is a stainless steel tube, one end of which is connected to the movable seat 301, and the other end is welded to a fixing frame 701. The fixing frame 701 is a rectangular aluminum alloy frame, and a main scraper 702 is embedded inside the fixing frame 701. The main scraper 702 is a wedge-shaped silicone strip.

[0068] Each end of the fixed frame 701 is fitted with a sliding frame 704, the inner wall of which has a nylon lubricating layer and can slide along the length of the fixed frame. The lower end of each sliding frame 704 is fixed with a side scraper 703 by screws or glue. The side scraper 703 is also a silicone strip and is closely attached to the bottom of the main scraper 702.

[0069] Each sliding frame 704 has multiple synchronizing rods 705 connected to its lower end, which are connected to the upper end of the support plate 316 at the corresponding position. When the knob 304 is rotated to adjust the spacing of the support belt mechanism, the support plate 316 drives the synchronizing rods 705, which in turn drive the sliding frame 704 to slide along the fixed frame 701, so that the side scraper 703 and the scrubbing belt 306 are adjusted synchronously to ensure that the water scraping range covers the entire scrubbing width.

[0070] like Figure 19 , Figure 20 As shown, the usage steps are as follows: Step 1: Coarse Adjustment of Height Operate the electric push rod 109 switch on the control panel 111 to make the electric push rod 109 drive the lifting frame 2 to move up and down, adjust the lifting frame 2 to a suitable height, and make the positioning plate 209 in front of the horizontal keel 10 above the glass 11.

[0071] Step 2: Adjusting the initial position of the scrubbing mechanism Start the first motor 204 to drive the lead screw 201 to rotate, which in turn drives the moving seat 301 to move up and down along the second guide rail 203, adjusting the cleaning mechanism 3 to the upper starting position of the glass 11.

[0072] Step 3: Approaching and making contact with the device The pushing device ensures that the cleaning belt 306, the main scraper 702, and the side scraper 703 all come into contact with the surface of the glass 11, thus ensuring that the cleaning belt 306 adheres to the glass.

[0073] Step 4: Adjust the width of the scrubbing belt Based on the actual width of a single glass pane 11, rotating knob 304 drives the bidirectional lead screw 305 to move the two support belt mechanisms in opposite directions or back-to-back, adjusting the contact length between the cleaning belt 306 and the glass. A gap of 3-5mm is maintained between the two sides of the cleaning belt 306 and the vertical ribs 9 on both sides of the glass to prevent the cleaning belt from scraping against the ribs. During adjustment, the two tensioning mechanisms 8 automatically adjust the position of the tensioning blocks 806 to keep the cleaning belt 306 taut at all times.

[0074] Step 5: Upper Positioning Rotating the rotating block 206 causes the threaded rod 207 to rotate, moving the positioning plate 209 forward until it presses against the side wall of the horizontal keel 10. At this time, the upper part of the device is held in place.

[0075] Step 6: Horizontal centering and positioning Adjust the extension length of the left and right support arms 105 respectively, so that the top block 104 is aligned with the vertical keel 9 on both sides of the glass. Then rotate the left and right positioning screws 103 so that the top block 104 rests on the vertical keel on both sides respectively. Tighten the positioning bolts 107 to lock the position of the support arms 105.

[0076] Step 7: Lock the casters Depress the brake pedal of caster 101 to lock all four casters and prevent the device from sliding during operation.

[0077] Step 8: Start the cleaning process Press the start button. The first motor 204 drives the lead screw 201, and the moving seat 301 begins to move downward at a constant speed.

[0078] Simultaneously, the third motor 320 drives the scrubbing belt 306 to rotate. The second motor 601 drives the brush 602 to rotate, and the second water pump 403 starts spraying water to clean the scrubbing belt 306. Wastewater flows into the water collection box 5 through the drain pipe 607, is filtered, and then recycled.

[0079] Step 9: Intensive cleaning of the bottom After the movable seat 301 descends to the lower limit (set via the control panel according to the length of the glass), the first motor 204 stops, but the scrubbing belt 306 continues to rotate for at least 10 seconds, and the brush and water spray continue to work to ensure that the stains on the bottom edge of the glass 11 are thoroughly removed and the last remaining water stains are absorbed.

[0080] Step 10: End or move to the next block After the stop is complete, all motors stop. If you need to clean adjacent glass, and the glass sizes are the same, simply release the brake on the caster wheel 101, move the device to the next position, and simultaneously move the cleaning mechanism to the starting position (the top of the glass); if the glass sizes are different, repeat steps 1 to 9.

[0081] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A cleaning device for the inner side of a glass curtain wall, comprising a scrubbing mechanism movable along the height direction of the curtain wall, characterized in that: The cleaning mechanism has a recirculating annular cleaning belt and a width adjustment component connected to the cleaning mechanism for changing the contact length between the cleaning belt and the glass; the width adjustment component can adjust the contact length of the cleaning belt according to the lateral dimension of the curtain wall working area so that the cleaning belt can cover the entire width of the working area in one go during a single vertical movement.

2. The glass curtain wall interior cleaning device as described in claim 1, characterized in that: The cleaning mechanism also includes a movable base, which houses a drive mechanism for rotating the cleaning belt and a tensioning mechanism. The tensioning mechanism has an elastically extendable cleaning belt support surface, used to accommodate or release the path length surplus generated by the change in contact length of the cleaning belt when the width adjustment component changes the contact length between the cleaning belt and the glass, while maintaining the tension of the cleaning belt. The width adjustment component is mounted on the movable base.

3. The glass curtain wall inner cleaning device as described in claim 2, characterized in that: The width adjustment assembly includes a bidirectional lead screw rotatably mounted on a movable seat and a guide rod fixedly mounted on the movable seat. One end of the bidirectional lead screw is provided with a knob. The scrubbing mechanism also includes two belt support mechanisms located on both sides of the scrubbing belt. Each belt support mechanism includes an upper push rod threadedly engaged with the bidirectional lead screw, a lower push rod slidably engaged with the guide rod, a support rod connected to the upper push rod and the lower push rod, and a support wheel and a support plate provided at the end of the support rod for supporting the scrubbing belt.

4. The glass curtain wall inner cleaning device as described in claim 2, characterized in that: The movable seat is equipped with a brush belt mechanism for online cleaning of the scrubbing belt. The brush belt mechanism includes a scrubbing box, a brush and a squeegee set in the scrubbing box, and a water supply box and a water receiving box connected to the scrubbing box. During the cyclic rotation, the scrubbing belt passes through the brush cleaning area and the squeegee drying area in sequence.

5. The glass curtain wall inner cleaning device as described in claim 4, characterized in that: The brush box is equipped with a partition, and there is a gap between the bottom of the partition and the bottom surface of the brush box. The brush and the squeegee are respectively arranged on both sides of the partition. The squeegee has a U-shaped structure with the opening facing downwards, and a squeegee strip is provided on the inner wall of the squeegee.

6. The glass curtain wall inner cleaning device as described in claim 4, characterized in that: The water receiving box is equipped with a removable filter screen, which divides the water receiving box into a sewage tank and a clean water tank; the bottom of the washing box is equipped with a drain pipe, and the water receiving box is equipped with a water inlet that connects to the drain pipe; the water supply box is equipped with a first water pump, and the inlet of the first water pump is connected to the clean water tank through a water pumping pipe, and the clean water tank is equipped with a sealing structure that automatically closes when the water pumping pipe is pulled out.

7. A glass curtain wall interior cleaning device as described in claim 6, characterized in that: A floating ring is fitted on the outside of the drain pipe, and a first spring is connected between the floating ring and the bottom of the scrubbing box. A lower sealing ring is provided at the bottom of the floating ring. The water inlet is located in the relief groove at the upper end of the sewage tank. When the water inlet box is installed in place, the relief groove pushes the floating ring upward and presses the lower sealing ring against the upper end face of the water inlet to form a seal.

8. A glass curtain wall interior cleaning device as described in claim 2, characterized in that: A squeegee mechanism is provided above the scrubbing belt. The squeegee mechanism includes a main squeegee and side squeegees that are slidably installed at both ends of the main squeegee. The side squeegees are connected to the support plate of the belt support mechanism through a synchronizing rod. When the width adjustment component adjusts the contact length of the scrubbing belt, the side squeegees move synchronously with the support plate.

9. A glass curtain wall interior cleaning device as described in claim 1, characterized in that: It also includes a base, the upper end of which is connected to a lifting frame, the height of which is adjustable; the scrubbing mechanism is mounted on the lifting frame and can move up and down along the lifting frame; the lower end of the base is provided with casters with brakes, and the upper end of the base is provided with a column and a battery.

10. A glass curtain wall interior cleaning device as described in claim 9, characterized in that: The column has a guide sleeve on its side wall, and a telescopic support arm is inserted inside the guide sleeve. The end of the support arm is vertically connected to a positioning screw, and the end of the positioning screw is provided with a top block for tightening the vertical keel of the curtain wall. The upper end of the lifting frame is provided with a telescopic positioning rod, and the lower end of the positioning rod is provided with a positioning plate for tightening the horizontal keel of the curtain wall.

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