Hoisting assembly of roof moving winch

Abstract

A roof moving winch hoisting assembly comprises a winch body, a composite pipe, a winch mounting frame, a moving support, a suspension arm mechanism and a counterweight assembly. The winch body is mounted on the winch mounting frame; one end of the composite pipe is wound on a winding drum of the winch body, and the other end of the composite pipe is forwards unwound from the winding drum; the winch mounting frame is rotationally mounted on the movable bracket; a plurality of universal wheels are arranged at the bottom of the movable support, and a plurality of supporting leg mechanisms are further arranged on the movable support. The suspension arm mechanism is mounted on the front side of the winch mounting frame; the counterweight assembly is installed on the rear side of the winch installation frame. The lifting device can get rid of the influence of a roof structure on lifting work, prevents the whole device from overturning or rollover during lifting, adapts to the conditions of uneven floor protrusions and the like, prevents a cable, a water pipe and a lifting rope from being intertwined when the wall cleaning robot is lifted, and is convenient and rapid in lifting direction adjustment.

Description

Technical Field

[0001] The present invention relates to the technical field of winches, and in particular to a rooftop mobile winch hoisting assembly. Background Art

[0002] Wall cleaning robots are widely used to clean building exterior walls. They typically require a winch to be hoisted from the rooftop. Currently, rooftop hoisting equipment is often hindered by structures on the rooftop, which limits the placement of the hoist. Furthermore, the obstruction of these structures makes it difficult for the hoist to reach the structure, hindering the wall cleaning robot's ability to clean the building exterior wall.

[0003] If the hoisting position of the winch hoisting equipment needs to be adjusted on the roof floor, the entire equipment can usually be turned around to achieve the change in the hoisting position, which makes the adjustment more difficult.

[0004] Furthermore, the lifting ropes, cables and water supply pipes connected to the wall cleaning robot are easily entangled with each other, affecting the lifting operation.

[0005] In response to the above technical problems, no one has proposed a plan to transform the rooftop winch equipment. Summary of the Invention

[0006] The purpose of the present invention is to provide a rooftop mobile hoisting assembly to address the deficiencies of the prior art.

[0007] In order to achieve the above-mentioned object, the technical solution adopted by the present invention is as follows: a rooftop mobile hoisting assembly includes a hoist body, a composite pipe, a hoist mounting frame, a mobile bracket, a boom mechanism and a counterweight assembly; The hoist body is installed on the hoist mounting frame; One end of the composite tube is wound around the drum of the hoist body, and the other end is unwound forward from the drum. An electric cable, a water pipe and a hanging rope are arranged in the composite tube. The electric cable is used to supply power to the wall cleaning robot, the water pipe is used to supply water to the wall cleaning robot, and the hanging rope is used to hoist the wall cleaning robot. The hoist mounting frame is rotatably mounted on the movable bracket via a slewing bearing; The bottom of the mobile bracket is provided with a plurality of universal wheels, and the mobile bracket is also provided with a plurality of spider-leg-shaped support leg mechanisms that can be folded and unfolded. When each of the support leg mechanisms is folded, the mobile bracket moves on the roof floor through each of the universal wheels. When each of the support leg mechanisms is unfolded, the mobile bracket is stably supported on the roof floor by each of the support leg mechanisms to prevent the entire device from tipping over. The length of the boom mechanism is 3 to 5 times the front-to-back dimension of the hoist mounting frame. The boom mechanism is mounted on the front side of the hoist mounting frame and can swing up and down to adjust the elevation angle, so that the front lifting end of the boom mechanism can pass over the roof structure, so as to hoist the wall cleaning robot at the location of the roof structure; The counterweight assembly is mounted on the rear side of the winch mounting frame to provide counterweight to prevent the entire device from tipping over.

[0008] Based on the above, the leg mechanism includes a swing arm, a curved leg, a leg and a universal foot, the swing arm is horizontally arranged and one end is hinged to the movable bracket through a hinge structure, the swing arm can swing horizontally around the hinge structure, and a swing arm electric cylinder is hinged between the swing arm and the movable bracket; the curved leg is a vertical square tube structure, the curved leg is vertically arranged at the lower part of the other end of the swing arm, the leg can be slidably inserted in the curved leg and extend downward from the lower end of the curved leg, the universal foot is installed at the lower end of the leg, the leg is locked with the curved leg through a locking mechanism, and a crank is respectively provided on the left and right sides of the upper end of the curved leg, and the two cranks are opposite to each other about the left and right sides of the swing arm The crank is bent at a certain point in the middle and the bent point is hinged on the swing arm, and a pneumatic spring is hinged between the other end of the crank and the swing arm, and the pneumatic spring can enable the crank to drive the crank leg to be retracted upward or unfolded downward: when the crank leg is retracted upward, the crank leg is tilted and the universal foot leaves the roof floor, and the mobile bracket can move on the roof floor through each of the universal wheels; when the crank leg is unfolded downward, the crank leg is vertical and its upper end is in pressure contact with the lower part of the swing arm, and at the same time, the extended length of the support leg is adjusted so that the universal foot is supported on the roof floor, and the mobile bracket can be stably supported on the roof floor through each of the universal feet.

[0009] Based on the above, the locking mechanism includes a stud and a fixing block, the fixing block is fixedly embedded in the upper end of the support leg, and the fixing block and the upper end of the support leg are provided with corresponding through holes on the opposite sides, and the tube walls on the opposite sides of the curved leg are vertically provided with adjustment long holes, and the two adjustment long holes correspond to each through hole laterally. The stud passes through the two adjustment long holes and each through hole laterally, and the two ends of the stud extend out of the two adjustment long holes respectively and are threaded with locking nuts. The two locking nuts can be pressed tightly against the outer side surfaces of the tube walls on the opposite sides of the curved leg to lock the support leg and the curved leg together.

[0010] Based on the above, the front upper part of the winch mounting frame is provided with a rope device located above the front of the drum, and the rope device includes a slide rail, a reciprocating screw rod, a second motor and a pulley frame, and the slide rail and the reciprocating screw rod are spaced up and down and are both horizontally arranged in the left and right directions, and the two ends of the slide rail are respectively fixedly connected to the front upper parts of the left and right side frames of the winch mounting frame, and the two ends of the reciprocating screw rod are respectively rotatably mounted on the front upper parts of the left and right side frames of the winch mounting frame, and the second motor drives the reciprocating screw rod to rotate. The pulley frame is provided with a slider slidably connected to the slide rail and a nut pair that is transmission-connected with the reciprocating screw rod, and the pulley frame is also rotatably installed with two first fixed pulleys spaced up and down, and the composite tube passes through the middle of the two first fixed pulleys and is in rolling contact with the two first fixed pulleys.

[0011] Based on the above, the mobile bracket is an X-shaped frame composed of four support beams, a chassis for installing the slewing bearing is provided at the top center of the mobile bracket, a universal wheel is respectively installed at the bottom of the outer ends of the four support beams of the mobile bracket, and a support leg mechanism is respectively installed at the outer ends of the four support beams of the mobile bracket.

[0012] Based on the above, the counterweight assembly includes a counterweight water tank, a hook is provided on one side of the counterweight water tank, and the counterweight water tank can be hung on the rear side of the winch mounting frame through the hook. A rubber pad is provided at the bottom of the counterweight water tank, and the rubber pad is supported on the roof floor.

[0013] Based on the above, the counterweight assembly includes a water tank frame and a water tank. A plurality of hooks are provided on one side frame of the water tank frame. The water tank frame can be hung on the rear side of the winch mounting frame through the hooks. A rubber pad is provided at the bottom of the water tank frame. The rubber pad is supported on the roof floor. Multiple water tanks are provided in the water tank frame.

[0014] Based on the above, the boom mechanism includes a boom bracket, which is arranged along the front-to-back direction. The length of the boom bracket is 3 to 5 times the front-to-back dimension of the winch mounting frame. The front end of the boom bracket is rotatably provided with a second fixed pulley, and the composite pipe is wound around the second fixed pulley. The rear end of the boom bracket is hinged to the front side of the winch mounting frame. The boom bracket can swing up and down around its rear end hinge axis to adjust the elevation angle, and a telescopic tube is hinged between the boom bracket and the winch mounting frame.

[0015] The present invention has outstanding substantial features and significant progress compared to the prior art. Specifically, the present invention has the following advantages: (1) The present invention installs the boom mechanism on the front side of the hoist mounting bracket. The length of the boom mechanism is 3 to 5 times the front-to-back dimension of the hoist mounting bracket. The front lifting end of the boom mechanism can pass over the roof structure so as to hoist the wall cleaning robot at the location of the roof structure. In this way, the hoisting equipment can adapt to the roof space and get rid of the influence of the roof structure on the hoisting work.

[0016] (2) In order to adapt the length of the boom mechanism to the front-to-back dimension ratio of the hoist mounting frame and prevent the entire equipment from tipping over during hoisting, the present invention also designs a counterweight assembly, which is installed on the rear side of the hoist mounting frame to provide counterweight, thereby balancing the hoisting load in the front and additional loads such as wind load.

[0017] (3) The mobile bracket of the present invention is also provided with a plurality of spider-leg-shaped support leg mechanisms that can be folded and unfolded. When hoisting, each of the support leg mechanisms is unfolded, and the mobile bracket can be stably supported on the roof floor by each of the support leg mechanisms. The counterweight assembly cooperates with each of the support leg mechanisms to increase the pressure and friction between the universal feet of each of the support leg mechanisms and the roof floor, making the entire device more stable and avoiding the entire device from tipping over. Moreover, by adjusting the extension length of each of the universal feet and the support legs, each of the universal feet can be adaptively adjusted in angle so as to contact a larger area of ​​the roof floor, so that the entire device can adapt to uneven floor bulges and the like, avoiding the instability of the entire device caused by a certain universal foot being suspended in the air.

[0018] (4) The present invention integrates the cables, water pipes and hanging ropes into a composite pipe, which can prevent the cables, water pipes and hanging ropes from getting entangled with each other during use, thereby ensuring the normal operation of the wall cleaning robot.

[0019] (5) The hoist mounting frame of the present invention is rotatably mounted on the movable bracket via a slewing bearing. In this way, the hoist mounting frame can be rotated to a certain angle according to the actual scenario to adjust the orientation of the boom mechanism. The hoisting orientation can be changed without adjusting the entire structure, which is convenient and quick.

[0020] (6) The present invention also provides a rope guide so that the composite pipe can be evenly wound around the drum of the hoist body on the left and right sides, thereby preventing the composite pipe from being wound and concentrated at a certain position on the drum, and preventing the center of gravity of the drum from deviating from its center, thereby causing torque to be generated at both ends of the drum when it rotates, thereby affecting the life of the drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The axial view of the present invention Figure 1 , omitting the counterweight assembly and some pneumatic springs.

[0022] Figure 2 The axial view of the present invention Figure 2 , omitting the counterweight assembly and some pneumatic springs.

[0023] Figure 3 It is a right side view of the present invention, omitting the counterweight assembly and part of the pneumatic spring.

[0024] Figure 4 It is a structural schematic diagram of the mobile bracket of the present invention.

[0025] Figure 5 It is a structural schematic diagram of the counterweight water tank of the present invention.

[0026] Figure 6 It is a structural schematic diagram of the water tank frame of the present invention.

[0027] In the figure: 1. Reel; 2. First motor; 3. Winch mounting frame; 4. Moving bracket; 5. Bearing assembly; 6. Slewing bearing; 7. Universal wheel; 8. Swing arm; 9. Bend leg; 10. Support leg; 11. Universal foot; 12. Hinge structure; 13. Crank; 14. Pneumatic spring; 15. Stud; 16. Adjustment slot; 17. Slide rail; 18. Reciprocating screw; 19. Pulley frame; 20. Slider; 21. First fixed pulley; 22. Chassis; 23. Counterweight water tank; 24. Hook; 25. Rubber pad; 26. Boom bracket; 27. Second fixed pulley; 28. Telescopic tube; 29. ​​Water tank frame. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described in detail below through specific implementation methods.

[0029] Example 1 like Figure 1-Figure 5 As shown, the rooftop mobile hoist assembly includes a hoist body composite pipe (not shown), a hoist mounting frame 3, a mobile bracket 4, a boom mechanism and a counterweight assembly; The hoist body is mounted on the hoist mounting frame. The hoist body mainly consists of a drum 1 and a first motor 2. Both ends of the drum 1 are rotatably mounted on the hoist mounting frame 3 via bearing assemblies 5. The first motor 2 is mounted on the hoist mounting frame 3 and drives the drum 1 to rotate (the first motor 2 and the drum 1 are connected via a synchronous belt transmission mechanism). One end of the composite tube is wound around the drum 1, and the other end is unwound forward from the drum 1. The composite tube is provided with a cable, a water pipe, and a hanging rope. The cable is used to supply power to the wall cleaning robot (not shown in the figure), the water pipe is used to supply water to the wall cleaning robot, and the hanging rope is used to suspend the wall cleaning robot. The composite tube is used to integrate the cable, water pipe, and hanging rope together, which can prevent the cable, water pipe, and hanging rope from getting entangled with each other during use, thereby ensuring the normal operation of the wall cleaning robot. The cable, water pipe, and hanging rope are not shown in the figure. The hoist mounting frame 3 is rotatably mounted on the movable bracket 4 via a slewing bearing 6; The bottom of the mobile bracket 4 is provided with a plurality of universal wheels 7, and the mobile bracket 4 is also provided with a plurality of spider-leg-shaped support leg mechanisms that can be folded and unfolded. When each of the support leg mechanisms is folded, the mobile bracket 4 moves on the roof floor through each of the universal wheels 7. When each of the support leg mechanisms is unfolded, the mobile bracket 4 is stably supported on the roof floor by each of the support leg mechanisms to prevent the entire device from tipping over. The length of the boom mechanism is 3 to 5 times the front-to-back dimension of the hoist mounting frame 3. The boom mechanism is mounted on the front side of the hoist mounting frame 3 and can swing up and down to adjust the elevation angle, so that the front lifting end of the boom mechanism can pass over the roof structure, so as to hoist the wall cleaning robot at the location of the roof structure, thereby enabling the hoisting equipment to adapt to the roof space and get rid of the influence of the roof structure on the hoisting work; The counterweight assembly is installed on the rear side of the winch mounting frame 3 to provide counterweight to prevent the entire equipment from tipping over.

[0030] The composite tube in the present invention is made of rubber, has a certain degree of elasticity, and can be wound and reeled onto the reel 1. The connection method between the cable and the external power supply and the connection method between the water pipe and the external water source are both prior art. CN2024206412837 discloses a wall-climbing robot, and the relevant technology is described in paragraph

[0048] of the specification, which will not be repeated here. The difference is that the present invention also sets the lifting rope in the composite tube, so that the composite tube has the functions of power supply, water supply, and lifting.

[0031] The support leg mechanism includes a swing arm 8, a curved leg 9, a support leg 10 and a universal foot 11. The swing arm 8 is horizontally arranged and one end is hinged to the mobile bracket 4 through a hinge structure 12. The swing arm 8 can swing horizontally around the hinge structure 12. A swing arm electric cylinder (not shown) is hinged between the swing arm 8 and the mobile bracket 4; the curved leg 9 is a vertical square tube structure, and the curved leg 9 is vertically arranged at the lower part of the other end of the swing arm 8. The support leg 10 can be slidably inserted into the curved leg 9 and extend downward from the lower end of the curved leg 9. The universal foot 11 is installed at the lower end of the support leg 10. The support leg 10 is locked with the curved leg 9 through a locking mechanism. A crank 13 is provided on the left and right sides of the upper end of the curved leg 9, and the two cranks 13 are relative to the swing arm 8. The crank 13 is symmetrically arranged on the left and right, and is bent somewhere in the middle and hinged on the swing arm 8 at the bent part. A pneumatic spring 14 is hinged between the other end of the crank 13 and the swing arm 8, and the pneumatic spring 14 can enable the crank 13 to drive the curved leg 9 to be folded upward or unfolded downward: when the curved leg 9 is folded upward, the curved leg 9 is tilted and the universal foot 11 leaves the roof floor, and the movable bracket 4 can be moved on the roof floor through each of the universal wheels 7; when the curved leg 9 is unfolded downward, the curved leg 9 is vertical and its upper end is in pressure contact with the lower part of the swing arm 8, and at the same time, the extended length of the support leg 10 is adjusted so that the universal foot 11 is supported on the roof floor, and the movable bracket 4 can be stably supported on the roof floor through each of the universal feet 11. Here, the pneumatic spring 14 and the crank 13 form a crank-rocker mechanism, and the crank leg 9 can pass through the dead point of the crank-rocker mechanism during the process of being retracted upward and then unfolded downward, or vice versa.

[0032] By adjusting the extension length of each of the universal feet 11 and the legs, the angle of each of the universal feet 11 can be adaptively adjusted so that they can all contact a larger area of ​​the roof floor, allowing the entire device to adapt to uneven floor bulges and the like, and avoiding the instability of the entire device caused by a certain universal foot being suspended in the air.

[0033] The locking mechanism includes a stud 15 and a fixing block. The fixing block is fixedly embedded in the upper end of the support leg 10. The fixing block and the upper end of the support leg 10 are provided with corresponding through holes extending therethrough on opposite sides. Adjustment slots 16 are vertically provided on the opposite sides of the tube wall of the curved leg 9. The two adjustment slots 16 correspond laterally to the through holes. The stud 15 extends laterally through the two adjustment slots 16 and each through hole. The two ends of the stud 15 extend out of the two adjustment slots 16 and are threadedly mounted with locking nuts. The two locking nuts can be tightly pressed against the outer side surfaces of the opposite sides of the tube wall of the curved leg 9 to lock the support leg 10 with the curved leg 9. The fixing block and locking nuts are not shown.

[0034] The front upper part of the winch mounting frame 3 is provided with a rope-arranging device located in the front upper part of the drum 1, and the rope-arranging device includes a slide rail 17, a reciprocating screw rod 18, a second motor and a pulley frame 19. The slide rail 17 and the reciprocating screw rod 18 are spaced apart up and down and are both arranged horizontally in the left and right directions. The two ends of the slide rail 17 are respectively fixedly connected to the front upper parts of the left and right side frames of the winch mounting frame 3, and the two ends of the reciprocating screw rod 18 are respectively rotatably mounted on the front upper parts of the left and right side frames of the winch mounting frame 3. The second motor drives the reciprocating screw rod 18 to rotate, and the pulley frame 19 is provided with a slider 20 slidably connected to the slide rail 17 and a nut pair that is transmission-connected with the reciprocating screw rod 18. Two first fixed pulleys 21 spaced apart up and down are also rotatably installed on the pulley frame 19. The composite pipe passes through the middle of the two first fixed pulleys 21 and is in rolling contact with the two first fixed pulleys 21. The arrangement of the rope guide ensures that the composite tube is evenly wound around the drum 1 from left to right, preventing the composite tube from being concentrated in one location on the drum 1. This prevents the center of gravity of the drum 1 from deviating from its center, which would cause torque to be generated at both ends of the drum 1 during rotation and shorten the life of the drum 1. The second motor and nut are not shown.

[0035] The mobile bracket 4 is an X-shaped frame composed of four supporting beams. A chassis 22 for mounting the slewing bearing 6 is provided at the top center of the mobile bracket 4. The bottom of the outer ends of the four supporting beams of the mobile bracket 4 are respectively mounted with a universal wheel 7, and the outer ends of the four supporting beams of the mobile bracket 4 are respectively mounted with a support leg mechanism.

[0036] The counterweight assembly includes a counterweight water tank 23. A hook 24 is provided on one side of the counterweight water tank 23. The counterweight water tank 23 can be hung on the rear side of the hoist mounting frame 3 via the hook 24. A rubber pad 25 is provided at the bottom of the counterweight water tank 23, which is supported on the roof surface. The rubber pad 25 increases the friction between the counterweight water tank 23 and the roof surface, preventing the counterweight water tank 23 from sliding or other deviations, thereby improving overall stability.

[0037] The boom mechanism includes a boom bracket 26, which is arranged along the front-to-back direction. The length of the boom bracket is 3 to 5 times the front-to-back dimension of the winch mounting frame. The front end of the boom bracket 26 is rotatably provided with a second fixed pulley 27, and the composite pipe is wound around the second fixed pulley 27. The rear end of the boom bracket 26 is hinged to the front side of the winch mounting frame 3. The boom bracket 26 can swing up and down around its rear end hinge axis to adjust the elevation angle. A telescopic tube 28 is hinged between the boom bracket 26 and the winch mounting frame 3.

[0038] By adjusting the length of the telescopic tube 28, the elevation angle of the boom bracket 26 can be adjusted, so that the hoisting height can be adjusted, thereby facilitating the front end of the boom bracket 26 to pass over some roof structures, such as roof walls, railings, etc., to ensure smooth hoisting work.

[0039] The telescopic tube 28 is composed of an outer tube and an inner tube. The outer tube and the inner tube are provided with a plurality of pin holes corresponding to the insertion of positioning pins, so as to adjust the length of the inner tube extending from the outer tube, so that the length of the telescopic tube 28 can be adjusted.

[0040] When the present invention is used, each of the curved legs 9 can be retracted upwards first, so that each of the universal feet 11 leaves the roof floor, and then the entire device can be moved on the roof floor through each of the universal wheels 7 at the bottom of the mobile bracket 4, which is easy to move. When the entire device is moved into place, the position of each of the swing arms 8 is adjusted by each of the swing arm electric cylinders, and then each of the curved legs 9 is unfolded downwards. At the same time, each of the locking nuts is loosened to adjust the extension length of each of the legs 10, so that each of the universal feet 11 is supported on the roof floor, and then the entire device can be stably supported on the roof floor by each of the universal feet 11; the counterweight water tank 23 is hung on the rear side of the winch mounting frame 3 through the hook 24, and the counterweight water tank 23 is connected to the counterweight water tank 23. The heavy water tank 23 is filled with water to increase the counterweight, which can balance the front hoisting load and additional loads such as wind load, and adapt to the length of the boom mechanism and the front-to-back dimension ratio of the winch mounting frame 3 to prevent the entire equipment from overturning during hoisting; at the same time, the counterweight can also increase the pressure and friction between each of the universal feet 11 and the roof floor, so that when the winch is working, the entire equipment is more stable and the entire equipment is prevented from tipping over; adjust the elevation angle of the boom bracket 26 so that the front end of the boom bracket 26 passes over some roof structures, so that the wall cleaning robot can be hoisted at the location of the roof structure. In this way, the winch hoisting equipment can adapt to the roof space and get rid of the influence of the roof structure on the hoisting work.

[0041] Furthermore, the present invention can adjust the orientation of the hoisting position by rotating the hoist mounting frame on the mobile support by a certain angle via a slewing bearing according to actual scenarios, thereby adjusting the orientation of the boom mechanism. This allows for a quick and convenient change in the hoisting position without requiring any adjustments to the entire structure. When adjusting the hoisting position, the counterweight water tank 23 needs to be removed to allow the hoist mounting frame to rotate.

[0042] Example 2 Different from Example 1, Figure 6As shown, the counterweight assembly includes a water tank frame 29 and a water tank. Multiple hooks 24 are provided on one side frame of the water tank frame 29. The water tank frame 29 can be hung on the rear side of the winch mounting frame 3 via the hooks 24. A rubber pad 25 is provided at the bottom of the water tank frame 29, which is supported on the rooftop floor. Multiple water tanks are provided within the water tank frame 29. This provides another implementation of a counterweight assembly, with the same function and effect as the counterweight assembly in Example 1. The rubber pad 25 also increases the friction between the water tank frame 29 and the rooftop floor when the water tank is filled with water and counterweight is added, preventing the water tank frame 29 from sliding or other deflections, thereby increasing overall stability.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention. They should all be included in the scope of the technical solution for protection of the present invention.

Claims

1. The rooftop mobile hoist assembly is characterized by: It includes a winch body, a composite pipe, a winch mounting frame, a mobile bracket, a boom mechanism and a counterweight assembly; The hoist body is installed on the hoist mounting frame; One end of the composite tube is wound around the drum of the hoist body, and the other end is unwound forward from the drum. An electric cable, a water pipe and a hanging rope are arranged in the composite tube. The electric cable is used to supply power to the wall cleaning robot, the water pipe is used to supply water to the wall cleaning robot, and the hanging rope is used to hoist the wall cleaning robot. The hoist mounting frame is rotatably mounted on the movable bracket via a slewing bearing; The bottom of the mobile bracket is provided with a plurality of universal wheels, and the mobile bracket is also provided with a plurality of spider-leg-shaped support leg mechanisms that can be folded and unfolded. When each of the support leg mechanisms is folded, the mobile bracket moves on the roof floor through each of the universal wheels. When each of the support leg mechanisms is unfolded, the mobile bracket is stably supported on the roof floor by each of the support leg mechanisms to prevent the entire device from tipping over. The length of the boom mechanism is 3 to 5 times the front-to-back dimension of the hoist mounting frame. The boom mechanism is mounted on the front side of the hoist mounting frame and can swing up and down to adjust the elevation angle, so that the front lifting end of the boom mechanism can pass over the roof structure, so as to hoist the wall cleaning robot at the location of the roof structure; The counterweight assembly is mounted on the rear side of the winch mounting frame to provide counterweight to prevent the entire device from tipping over.

2. The rooftop mobile hoist assembly according to claim 1, characterized in that: The leg mechanism includes a swing arm, a curved leg, a leg and a universal foot, the swing arm is horizontally arranged and one end is hinged to the mobile bracket by a hinge structure, the swing arm can swing horizontally around the hinge structure, and a swing arm electric cylinder is hinged between the swing arm and the mobile bracket; the curved leg is a vertical square tube structure, the curved leg is vertically arranged at the lower part of the other end of the swing arm, the leg can be slidably inserted in the curved leg and extend downward from the lower end of the curved leg, the universal foot is installed at the lower end of the leg, the leg is locked with the curved leg by a locking mechanism, and a crank is respectively provided on the left and right sides of the upper end of the curved leg, and the two cranks are symmetrically arranged about the swing arm. The crank is bent somewhere in the middle and the bent part is hinged on the swing arm, and a pneumatic spring is hinged between the other end of the crank and the swing arm, and the pneumatic spring can enable the crank to drive the curved leg to be retracted upward or extended downward: when the curved leg is retracted upward, the curved leg is tilted and the universal foot leaves the roof floor, and the mobile bracket can move on the roof floor through each of the universal wheels; when the curved leg is extended downward, the curved leg is vertical and its upper end is in pressure contact with the lower part of the swing arm, and at the same time, the extension length of the support leg is adjusted so that the universal foot is supported on the roof floor, then the mobile bracket can be stably supported on the roof floor through each of the universal feet.

3. The rooftop mobile hoist assembly according to claim 2, characterized in that: The locking mechanism includes a stud and a fixing block, the fixing block is fixedly embedded in the upper end of the support leg, and the fixing block and the upper end of the support leg are provided with corresponding through holes on opposite sides thereof, and the tube walls on opposite sides of the curved leg are vertically provided with adjustment long holes, and the two adjustment long holes correspond to each of the through holes laterally. The stud passes through the two adjustment long holes and each of the through holes laterally, and the two ends of the stud extend out of the two adjustment long holes respectively and are threadedly installed with locking nuts, and the two locking nuts can be pressed tightly against the outer side surfaces of the tube walls on opposite sides of the curved leg to lock the support leg and the curved leg together.

4. The rooftop mobile hoist assembly according to any one of claims 1 to 3, characterized in that: The upper front portion of the winch mounting frame is provided with a rope guide located above the front of the drum, and the rope guide includes a slide rail, a reciprocating screw rod, a second motor and a pulley frame, and the slide rail and the reciprocating screw rod are spaced up and down and are both horizontally arranged in the left and right directions, and the two ends of the slide rail are respectively fixedly connected to the upper front portion of the left and right side frames of the winch mounting frame, and the two ends of the reciprocating screw rod are rotatably mounted on the upper front portion of the left and right side frames of the winch mounting frame, and the second motor drives the reciprocating screw rod to rotate. The pulley frame is provided with a slider slidably connected to the slide rail and a nut pair that is transmission-connected with the reciprocating screw rod, and the pulley frame is also rotatably installed with two first fixed pulleys spaced up and down, and the composite tube passes through the middle of the two first fixed pulleys and is in rolling contact with the two first fixed pulleys.

5. The rooftop mobile hoist assembly according to claim 4, characterized in that: The mobile bracket is an X-shaped frame composed of four supporting beams. A chassis for installing the slewing bearing is provided at the top center of the mobile bracket. A universal wheel is respectively installed at the bottom of the outer ends of the four supporting beams of the mobile bracket, and a support leg mechanism is respectively installed at the outer ends of the four supporting beams of the mobile bracket.

6. The rooftop mobile hoist assembly according to claim 4, characterized in that: The counterweight assembly includes a counterweight water tank, a hook is provided on one side of the counterweight water tank, and the counterweight water tank can be hung on the rear side of the winch mounting frame through the hook. A rubber pad is provided at the bottom of the counterweight water tank, and the rubber pad is supported on the roof floor.

7. The rooftop mobile hoist assembly according to claim 4, characterized in that: The counterweight assembly includes a water tank frame and a water tank. A plurality of hooks are provided on one side frame of the water tank frame. The water tank frame can be hung on the rear side of the winch mounting frame through the hooks. A rubber pad is provided at the bottom of the water tank frame. The rubber pad is supported on the roof floor. A plurality of water tanks are provided in the water tank frame.

8. The rooftop mobile hoist assembly according to claim 4, characterized in that: The boom mechanism includes a boom bracket, which is arranged along the front-to-back direction. The length of the boom bracket is 3 to 5 times the front-to-back dimension of the winch mounting frame. The front end of the boom bracket is rotatably provided with a second fixed pulley, and the composite pipe is wound around the second fixed pulley. The rear end of the boom bracket is hinged to the front side of the winch mounting frame. The boom bracket can swing up and down around its rear end hinge axis to adjust the elevation angle, and a telescopic tube is hinged between the boom bracket and the winch mounting frame.

Images