An unmanned aerial vehicle water diversion and spraying maintenance device for canyon high pier

Abstract

The application relates to the technical field of road and bridge engineering construction, and discloses a device for unmanned aerial vehicle water diversion and spraying maintenance for a high pier in a canyon, which comprises a ground control station, a water storage tank, an unmanned aerial vehicle, a water conveying hose, an automatic winding and unwinding assembly, a filtering device and a water pump; the water storage tank, the water pump, the filtering device and the water conveying hose are sequentially communicated; part of the water conveying hose is wound on the automatic winding and unwinding assembly; and the unmanned aerial vehicle end of the water conveying hose is communicated with a spraying assembly arranged at the bottom of the unmanned aerial vehicle. In the application, the unmanned aerial vehicle can continuously spray and maintain the high pier in the canyon without carrying a large-capacity water tank, the load of the unmanned aerial vehicle is reduced, the continuity and efficiency of the spraying operation are improved, fixed spraying pipelines, ladders, baskets or support frames do not need to be arranged outside the high pier, high-altitude installation and removal operations are reduced, the water conveying hose can keep a proper unwinding length along with the lifting and movement of the unmanned aerial vehicle, and the hose is prevented from being too tightly pulled to the unmanned aerial vehicle or being too loosely swung and wound.

Description

Technical Field

[0001] This invention relates to the field of road and bridge engineering construction technology, and in particular to a drone-based water spraying maintenance device for high piers in canyons. Background Technology

[0002] In road and bridge construction, bridge piers in canyons, deep gullies, and water-adjacent areas often face problems such as steep terrain, limited construction access, and narrow working space, making spray curing after concrete pouring more difficult.

[0003] Existing methods for maintaining high piers mostly involve manual watering or fixed sprinkler systems. Manual watering is labor-intensive and carries the risks of working at heights; fixed sprinkler systems typically require the use of tower cranes, cages, ladders, or scaffolding for installation and dismantling, resulting in long installation and dismantling cycles, high costs, and the potential to tie up construction equipment turnaround time.

[0004] When using drones with their own water tanks for spraying, the limited payload and endurance of the drones restrict the amount of water they can carry per trip, making it difficult to meet the water demand for continuous spraying and curing of high-pier concrete. If a drone is used to tow a water delivery hose and supply water from the ground, although the continuity of water supply can be improved, the water delivery hose is easily affected by wind swings, twists, or tangles in the air, and may drag the drone, affecting its flight stability.

[0005] Furthermore, the complex wind field around the high piers in the canyon causes the sprayed water jets or mist to easily drift and deviate from their landing point, resulting in uneven spraying on the pier surface and affecting the quality of concrete curing. Therefore, there is an urgent need for a drone-based water spraying curing device suitable for high piers in canyons to improve the continuity, stability, and safety of high pier spraying curing. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a drone-based water spraying maintenance device for canyon piers.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A drone-based water spraying maintenance device for canyon piers includes a ground control station, a water tank, a drone, a water delivery hose, an automatic winding and unwinding assembly, a filter device, and a water pump. The water tank, water pump, filter device, and water delivery hose are connected in sequence. Part of the water delivery hose is wound around the automatic winding and unwinding assembly, and the drone end of the water delivery hose is connected to a spraying assembly located at the bottom of the drone.

[0009] The drone has a mounting base at its bottom, and a mounting frame at the bottom of the mounting base. A rotating rod is rotatably mounted on the bottom of the mounting frame via a bearing. A mounting rod is mounted on the bottom end of the rotating rod. The mounting rod can rotate relative to the mounting frame around a vertical axis. A clamp is mounted on the mounting rod. A slewing bearing is fitted on the outer wall of the water delivery hose. The clamp clamps and fixes the slewing bearing, so that the water delivery hose can rotate relative to the inner wall of the clamp when subjected to wind force, thereby releasing the torsional stress generated by the water delivery hose as the drone flies.

[0010] The spray assembly is located at one end of the mounting rod. A servo drive component is mounted on the mounting bracket. The output end of the servo drive component is connected to the spray assembly and the mounting rod via a transmission link to adjust the spray angle of the spray assembly. The servo drive component drives the mounting rod to rotate horizontally via the transmission link to adjust the spray direction of the spray assembly. Several hose attitude management components are spaced apart on the water delivery hose.

[0011] Preferably, the drone is equipped with a wind speed and direction sensor and a wireless communication unit.

[0012] Preferably, the hose attitude management component is a flow guide or counterweight sleeved on the outside of the water delivery hose, used to reduce the swing amplitude of the water delivery hose in the air.

[0013] Preferably, the spray assembly includes a mounting base installed at one end of the mounting rod, and the mounting base has several mounting holes on its side, with a rotating seat rotatably mounted inside each mounting hole.

[0014] Preferably, the rotating seat is equipped with a nozzle at the end near the high pier, and the end of the water supply hose that passes through the clamp is connected to a diversion pipe through a rotary sealing joint. One end of the diversion pipe is fixedly connected to the mounting rod, and several water supply branch pipes are provided on the diversion pipe. The end of the water supply branch pipe away from the diversion pipe is connected to the water inlet of the nozzle. When the water supply hose is blown by the wind, the clamp and the water supply hose rotate relative to the mounting rod, while the diversion pipe remains stationary relative to the mounting rod.

[0015] Preferably, a lever is slidably provided on one side of the mounting base, the lever extends along the length of the mounting base, and the output end of the servo drive component is connected to the lever via a transmission link.

[0016] Preferably, the rotating seat is provided with an eccentric connecting part, and the actuating rod is hinged to the eccentric connecting part so as to drive the rotating seat to rotate relative to the mounting seat when the actuating rod slides.

[0017] Preferably, a tension sensor for detecting the tension of the water hose is provided on one side of the automatic winding and unwinding assembly.

[0018] Preferably, the ground control station is communicatively connected to the water pump, the automatic winding and unwinding assembly, and the wireless communication unit, and is used to control the start and stop of the water pump and the winding or unwinding of the water delivery hose by the automatic winding and unwinding assembly.

[0019] The beneficial effects of this invention are as follows:

[0020] Compared with existing technologies, this invention forms a continuous ground water supply structure through a water storage tank, water pump, filtration device, water delivery hose and spraying assembly, so that drones do not need to carry large-capacity water tanks to continuously spray and maintain the high piers in the canyon, reducing the drone's load and improving the continuity and efficiency of spraying operations.

[0021] This invention uses a drone to lift a water delivery hose into the air and carry a spraying assembly for operation. This eliminates the need to erect fixed spraying pipelines, ladders, baskets, or support frames on the outside of high piers, reducing high-altitude installation and dismantling work, and lowering construction risks and costs.

[0022] This invention uses an automatic winding and unwinding assembly and a tension sensor to wind, unwind, and detect the tension of the water delivery hose. This allows the water delivery hose to maintain a suitable unwinding length as the drone rises, falls, and moves, preventing the hose from being too tight and pulling on the drone or too loose and causing it to swing or entangle, thus improving the drone's flight stability.

[0023] This invention provides a spiral receiving groove on the reel that is compatible with the water delivery hose, enabling the water delivery hose to be wound in an orderly manner, reducing stacking, flattening and bending during the winding process, and ensuring the flow capacity and water supply stability of the water delivery hose.

[0024] This invention uses clamps, slewing bearings or rotating sleeves and rotary sealing joints to enable the section of the water delivery hose near the drone to release torsional stress while maintaining water flow, thereby reducing the risk of the water delivery hose twisting, self-entanglement and pulling on the drone.

[0025] This invention uses a servo drive component, transmission link, actuation rod, and rotating seat to drive the nozzle to rotate, thereby adjusting the spray angle of the nozzle and enabling the spray water jet to be directed more accurately toward the high mound to be maintained area, thus improving the spray coverage effect.

[0026] This invention, through the cooperation of wind speed and direction sensors, wireless communication units and ground control stations, can coordinate and control the spray direction and the extension and retraction of water delivery hoses according to changes in the canyon wind field, thereby reducing the impact of wind on the spray landing point and hose posture.

[0027] This invention reduces the swaying amplitude of the water delivery hose in the air by periodically installing hose attitude management components on the water delivery hose, thereby reducing the possibility of the hose colliding with high piers or surrounding obstacles and improving the safety and stability of the spray maintenance process. Attached Figure Description

[0028] Fig. 1 This is a schematic diagram of the overall structure of a drone-based water spraying maintenance device for canyon piers, as proposed in an embodiment of the present invention.

[0029] Fig. 2 This is a schematic diagram of the structure of the drone, spraying components and servo motor drive components in a drone-based water diversion and spraying maintenance device for canyon piers proposed in an embodiment of the present invention.

[0030] Fig. 3 This is a side structural cross-sectional view of the spraying component in a drone-based water diversion and spraying maintenance device for canyon piers, as proposed in an embodiment of the present invention.

[0031] Fig. 4 This is a top-view structural cross-sectional view of the spraying component in a drone-based water spraying maintenance device for canyon piers, as proposed in an embodiment of the present invention.

[0032] In the diagram: 1-Ground control station, 2-Water tank, 3-Sprinkler assembly, 31-Mounting base, 32-Sprinkler head, 33-Mounting hole, 4-UAV, 5-Hose attitude management component, 6-Water delivery hose, 7-Automatic winding and unwinding assembly, 8-Filter device, 9-Water pump, 10-Mounting base, 11-Transmission linkage, 12-Servo drive component, 13-Mounting bracket, 14-Rotating rod, 15-Clamp, 16-Mounting rod, 17-Wind speed and direction sensor, 18-Wireless communication unit, 19-Actuating lever, 20-Rotating base, 21-Tension sensor, 22-Diverter pipe. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0034] Reference Figs. 1 to 4 This embodiment provides a drone-based water spraying and curing device for high piers in canyons. The device includes a ground control station 1, a water tank 2, a drone 4, a water delivery hose 6, an automatic winding and unwinding assembly 7, a filter device 8, and a water pump 9. The water tank 2 stores water for concrete curing. The inlet of the water pump 9 is connected to the water tank 2, the outlet of the water pump 9 is connected to the filter device 8, and the outlet of the filter device 8 is connected to the water delivery hose 6. Through this configuration, the water in the water tank 2 can be pressurized and transported by the water pump 9, and after being filtered by the filter device 8, it enters the water delivery hose 6, thereby preventing impurities in the water from entering the spraying assembly 3 and causing nozzle blockage.

[0035] Part of the water delivery hose 6 is wound around the automatic winding and unwinding assembly 7, which is used to wind or unwind the water delivery hose 6 according to the flight altitude and position of the drone 4 and the tension of the water delivery hose 6. The drone end of the water delivery hose 6 extends upward to the bottom of the drone 4 and connects to the spray assembly 3 located at the bottom of the drone 4. In use, the water pump 9 delivers water from the water tank 2 through the filter device 8 to the water delivery hose 6, and then from the water delivery hose 6 to the spray assembly 3 at the bottom of the drone 4, thereby spraying and maintaining the surface of the canyon pier through the spray assembly 3.

[0036] The drone 4 has a mounting base 10 at its bottom, which provides a foundation for the spraying and anti-entanglement structure at the bottom of the drone 4. The mounting base 10 has a mounting frame 13 at its bottom, which can be a frame structure, a plate frame structure, or a support structure composed of multiple connecting rods. A rotating rod 14 is rotatably mounted on the bottom of the mounting frame 13 via bearings. The rotating rod 14 is vertically oriented, and a mounting rod 16 is mounted at its bottom end. The mounting rod 16 can rotate relative to the mounting frame 13 around its vertical axis under the influence of the rotating rod 14. Therefore, when the drone 4 flies around the outer edge of the canyon pier, hovers for adjustment, or changes attitude due to wind disturbance, the mounting rod 16 can rotate horizontally relative to the mounting frame 13, thus adapting to the adjustment of the spraying direction of the spraying assembly 3.

[0037] A clamp 15 is installed on the mounting rod 16. The clamp 15 is used to limit and fix the section of the water supply hose 6 near the drone end. Specifically, a slewing bearing or a rotating sleeve is sleeved on the outer side of the section of the water supply hose 6 near the drone end. When a slewing bearing is used, the inner ring of the slewing bearing is matched with the water supply hose 6 for limiting, and the outer ring of the slewing bearing is clamped and fixed by the clamp 15. When a rotating sleeve is used, the rotating sleeve is sleeved on the outer side of the water supply hose 6, and the rotating sleeve is clamped and fixed by the clamp 15, allowing the water supply hose 6 to rotate relative to the rotating sleeve or the clamp 15. Through the above settings, the clamp 15 can constrain the position of the water supply hose 6, preventing the water supply hose 6 from swaying too much at the bottom of the drone 4, while not completely rigidly clamping the water supply hose 6.

[0038] During the flight of the drone 4, the water delivery hose 6 may experience a torsional tendency due to the drone 4's yaw, circling motion around the pier, wind swaying, or changes in the hose's own sag. Since the section of the water delivery hose 6 closest to the drone can rotate relative to the clamp 15 via a slewing bearing or rotating sleeve, when the water delivery hose 6 is affected by wind or the movement of the drone 4, it can rotate relative to the inner wall of the clamp 15 or the slewing bearing held by the clamp 15. This releases the torsional stress generated by the water delivery hose 6 during the flight of the drone 4, reducing the risk of the water delivery hose 6 twisting, self-entanglement, or pulling on the drone 4.

[0039] The spray assembly 3 is mounted at one end of the mounting rod 16. Since the mounting rod 16 can rotate relative to the mounting frame 13 around its vertical axis, its rotation causes the spray assembly 3 to change its orientation, allowing it to face the maintenance area of ​​the canyon pier. A servo drive component 12 is mounted on the mounting frame 13. The output end of the servo drive component 12 is connected to the spray assembly 3 and the mounting rod 16 via a transmission link 11. When the servo drive component 12 is working, its output end drives the transmission link 11, which in turn drives the mounting rod 16 to rotate horizontally around its vertical axis, thereby adjusting the spray direction of the spray assembly 3.

[0040] In one specific embodiment, the servo drive component 12 can be a servo motor, an electric oscillating actuator, a stepper motor, or a micro motor with a reduction gear. One end of the transmission link 11 is connected to the output end of the servo drive component 12, and the other end is connected to the mounting rod 16 or the spray assembly 3. After receiving a control signal, the servo drive component 12 drives the transmission link 11 to produce a push-pull action or an oscillating action. With this structure, the spray direction of the spray assembly 3 can be adjusted when the UAV 4 hovers or flies along the outside of the high pier, so that the spray water can more accurately cover the surface of the high pier.

[0041] In another specific embodiment, the servo drive component 12 can also be connected to the movable nozzle structure in the spray assembly 3 via the transmission link 11 to adjust the spray angle of the spray assembly 3. That is, the servo drive component 12 can be used to adjust the overall orientation of the spray assembly 3, as well as to adjust the local spray angle of the nozzle in the spray assembly 3. By coordinating the adjustment of the overall spray direction and the adjustment of the local nozzle angle, the adaptability of the spray assembly 3 to the surface of high piers with different heights, different sides, or different curved surfaces can be improved.

[0042] Several hose attitude control components 5 are spaced apart on the water delivery hose 6. These components 5 can be flow guides fitted around the outside of the hose 6, counterweights, or a combination of flow guides and counterweights forming a sway-limiting structure. Multiple hose attitude control components 5 are arranged at intervals along the length of the hose 6 to reduce its sway amplitude in the air. In practical use, the hose attitude control components 5 can increase the local anti-sway stability of the hose 6 or change the airflow state when the hose 6 is exposed to wind, thereby reducing the lateral sway of the hose 6 in the canyon wind field and lowering the possibility of the hose 6 colliding with high piers or pulling the drone 4.

[0043] Ground control station 1 can communicate with water pump 9, automatic winding assembly 7, and UAV 4 to control the start and stop of water pump 9, water supply pressure, and the winding or unwinding actions of automatic winding assembly 7. When UAV 4 increases its flight altitude or moves away from automatic winding assembly 7, automatic winding assembly 7 unwinds the water delivery hose 6; when UAV 4 descends or approaches automatic winding assembly 7, automatic winding assembly 7 winds the water delivery hose 6. Thus, the water delivery hose 6 maintains a suitable unwound length, preventing excessive slack and large swings, and also preventing excessive tension that would affect the flight stability of UAV 4.

[0044] When this device is in operation, the water tank 2, water pump 9, filter device 8, water delivery hose 6, and automatic rewinding assembly 7 are first arranged at the bottom of the canyon, on the construction access road, or in the ground work area near the high pier, and the drone end of the water delivery hose 6 is connected to the spray assembly 3 at the bottom of the drone 4. Then, the drone 4 is launched, and the drone 4 pulls the water delivery hose 6 up to the target height outside the high pier to be cured. During the ascent of the drone 4, the automatic rewinding assembly 7 releases the water delivery hose 6 simultaneously, and the hose attitude management component 5 stabilizes the aerial attitude of the water delivery hose 6. After the water pump 9 is started, the water in the water tank 2 is transported to the spray assembly 3 through the filter device 8 and the water delivery hose 6, and the spray assembly 3 sprays curing water onto the surface of the canyon high pier.

[0045] When the spray direction needs to be adjusted, the control system of the ground control station 1 or the UAV 4 sends a control signal to the servo drive component 12. The servo drive component 12 drives the mounting rod 16 to rotate horizontally through the transmission link 11, or drives the spray assembly 3 to adjust its angle so that the spray direction of the spray assembly 3 is towards the area to be maintained.

[0046] With the above structure, this embodiment can continuously supply water to the spray assembly 3 on the UAV 4 from the ground water supply device without relying on the fixed support, ladder or basket on the outside of the high pier. The extension length of the water delivery hose 6 is controlled by the automatic winding and unwinding assembly 7. The torsional stress of the water delivery hose 6 is released by the clamp 15, slewing bearing or rotating sleeve. The swing amplitude of the water delivery hose 6 in the air is reduced by the hose attitude management component 5. The spray angle or spray direction of the spray assembly 3 is adjusted by the servo drive component 12 and the transmission linkage 11, thereby realizing continuous, stable and automatic spray curing of the concrete surface of the canyon high pier.

[0047] In a preferred embodiment of the present invention, the UAV 4 is equipped with a wind speed and direction sensor 17 and a wireless communication unit 18. The wind speed and direction sensor 17 is used to detect wind speed and direction information in the flight area of ​​the UAV 4 in real time, and the wireless communication unit 18 is used to realize data interaction between the UAV 4 and the ground control station 1. The ground control station 1 can receive the wind speed and direction information detected by the wind speed and direction sensor 17 through the wireless communication unit 18, and control the flight attitude of the UAV 4, the retraction and extension status of the automatic retraction and extension assembly 7, and the action status of the servo drive component 12 according to the wind speed and direction information, so that the spraying direction of the spraying assembly 3 can be adjusted according to the wind field changes, thereby reducing the deviation of the spray water flow in the canyon wind field and improving the uniformity of spray coverage on the surface of the canyon piers.

[0048] In a preferred embodiment of the present invention, the spray assembly 3 includes a mounting base 31 installed at one end of the mounting rod 16. The mounting base 31 has a plurality of mounting holes 33 on its side, and a rotating seat 20 is rotatably installed inside each mounting hole 33.

[0049] The rotating base 20 is equipped with a nozzle 32 at the end near the high pier. The end of the water supply hose 6 passing through the clamp 15 is connected to a diversion pipe 22 via a rotary sealing joint. One end of the diversion pipe 22 is fixedly connected to the mounting rod 16. Several water supply branch pipes are provided on the diversion pipe 22. The end of the water supply branch pipe away from the diversion pipe 22 is connected to the water inlet of the nozzle 32. Thus, the water transported by the water supply hose 6 can enter the diversion pipe 22 through the rotary sealing joint, and then be transported by the diversion pipe 22 to each water supply branch pipe, and then enter the corresponding nozzle 32 through each water supply branch pipe, thereby realizing synchronous water supply and spraying of multiple nozzles 32.

[0050] Specifically, a rotary sealing joint is installed between the water supply hose 6 and the diversion pipe 22 to allow the water supply hose 6 to rotate relative to the diversion pipe 22 while ensuring water flow between them. The section of the water supply hose 6 closest to the UAV engages with the clamp 15 via a slewing bearing or a rotating sleeve, allowing the hose 6 to rotate relative to the clamp 15. Simultaneously, the water supply hose 6 and the diversion pipe 22 are rotatably connected via the rotary sealing joint. Therefore, when the water supply hose 6 is subjected to wind disturbance, changes in the flight attitude of the UAV 4, or the influence of the UAV 4 flying around a high pier, causing a torsional tendency, the hose 6 can rotate relative to the clamp 15 via the slewing bearing or rotating sleeve, and rotate relative to the diversion pipe 22 via the rotary sealing joint. This releases the torsional stress generated by the hose 6 during the flight of the UAV 4, reducing the likelihood of the hose 6 twisting, tangling, or pulling on the UAV 4.

[0051] The diversion pipe 22 is fixedly mounted on the mounting rod 16, which supports the spray assembly 3 and drives the overall adjustment of the spray assembly 3. Since the diversion pipe 22 is fixedly connected to the mounting rod 16, when the spray assembly 3 rotates with the mounting rod 16, the diversion pipe 22 can rotate synchronously with the mounting rod 16; while the water supply hose 6 is connected to the diversion pipe 22 through a rotary sealing joint, so that when the diversion pipe 22 rotates with the mounting rod 16, it will not directly drive the water supply hose 6 to twist at the same angle, thereby further reducing the risk of the water supply hose 6 becoming tangled or twisted at the drone end.

[0052] In a preferred embodiment of the present invention, a toggle lever 19 is slidably disposed on one side of the mounting base 31. The toggle lever 19 extends along the length direction of the mounting base 31, and the output end of the servo drive component 12 is connected to the toggle lever 19 via a transmission link 11. Specifically, a groove, guide rail, or limiting sleeve may be provided on one side of the mounting base 31, and the toggle lever 19 is slidably installed in the groove, guide rail, or limiting sleeve, so that the toggle lever 19 can reciprocate along the length direction of the mounting base 31 and avoids the toggle lever 19 from deflecting during movement.

[0053] The servo drive unit 12 can be mounted on the mounting bracket 13 or the mounting rod 16. The output end of the servo drive unit 12 is connected to one end of the transmission link 11, and the other end of the transmission link 11 is connected to the lever 19. When the servo drive unit 12 is working, its output end generates a rotation or oscillation motion, and converts this rotation or oscillation motion into a reciprocating sliding motion of the lever 19 along the length direction of the mounting base 31 through the transmission link 11.

[0054] Since the actuating lever 19 is connected to the rotating base 20, when the actuating lever 19 slides along the length of the mounting base 31, it can drive the rotating base 20 to rotate relative to the mounting base 31, thereby causing the nozzles 32 mounted on the rotating base 20 to change their spray angle. With the above structure, one servo drive component 12 can drive multiple rotating bases 20 to rotate synchronously through the transmission link 11 and the actuating lever 19, thereby achieving synchronous angle adjustment of multiple nozzles 32.

[0055] In a preferred embodiment of the present invention, the rotating seat 20 is provided with an eccentric connecting part, and the actuating rod 19 is hinged to the eccentric connecting part so as to drive the rotating seat 20 to rotate relative to the mounting seat 31 when the actuating rod 19 slides. Specifically, the eccentric connecting part is located at a position off-center of rotation of the rotating seat 20, the rotation center of the rotating seat 20 corresponds to the axis of the mounting hole 33, and there is a preset eccentric distance between the eccentric connecting part and the rotation center of the rotating seat 20.

[0056] The actuating lever 19 is provided with a hinge hole or hinge seat corresponding to the eccentric connecting part. The eccentric connecting part is hinged to the actuating lever 19 via a pin, hinge shaft, or connecting bolt. Since the eccentric connecting part is eccentrically set relative to the rotation center of the rotating seat 20, when the actuating lever 19 slides along the length direction of the mounting base 31, the actuating lever 19 can apply an eccentric force to the rotating seat 20 through the eccentric connecting part, causing the rotating seat 20 to rotate relative to the mounting base 31 around the axis of the mounting hole 33.

[0057] When the rotating base 20 rotates, the nozzle 32 installed at the end of the rotating base 20 facing the high pier rotates synchronously with the rotating base 20, thereby changing the spray angle of the nozzle 32.

[0058] In a preferred embodiment of the present invention, a tension sensor 21 for detecting the tension of the water hose 6 is provided on one side of the automatic winding and unwinding assembly 7. The automatic winding and unwinding assembly 7 includes a reel for winding the water hose 6 and a drive mechanism for driving the reel to rotate. The drive mechanism can be a servo motor, which is connected to the reel for driving the reel to rotate forward or backward, thereby realizing the winding or unwinding of the water hose 6.

[0059] Specifically, the reel includes a drum, and the outer circumferential surface of the drum is provided with a spiral receiving groove for accommodating the water supply hose 6. The water supply hose 6 can be wound sequentially around the outside of the drum along the spiral receiving groove. The width of the spiral receiving groove is adapted to the outer diameter of the water supply hose 6, so that the water supply hose 6 can be arranged in an orderly manner according to a preset path during the winding process, avoiding cross-winding or partial stacking of the water supply hose 6 on the drum.

[0060] Tension sensor 21 is installed on the lead-out side of automatic winding and unwinding assembly 7. After the water hose 6 is released from the reel, it passes through the detection area of ​​tension sensor 21 and extends towards UAV 4. Tension sensor 21 is used to detect the tension of water hose 6 in real time during the winding and unwinding process and sends the detected tension signal to ground control station 1. Ground control station 1 controls automatic winding and unwinding assembly 7 to wind or unwind water hose 6 according to the tension signal detected by tension sensor 21.

[0061] In a preferred embodiment of the present invention, the ground control station 1 is communicatively connected to the water pump 9, the automatic winding and unwinding assembly 7, and the wireless communication unit 18, and is used to control the start and stop of the water pump 9 and the winding or unwinding of the water delivery hose 6 by the automatic winding and unwinding assembly 7.

[0062] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A drone-based water spraying maintenance device for high piers in canyons, comprising a ground control station (1), a water tank (2), a drone (4), a water delivery hose (6), an automatic winding and unwinding assembly (7), a filter device (8), and a water pump (9), characterized in that, The water storage tank (2), water pump (9), filter device (8) and water delivery hose (6) are connected in sequence. Part of the water delivery hose (6) is wound around the automatic winding and unwinding assembly (7). The drone end of the water delivery hose (6) is connected to the spray assembly (3) set at the bottom of the drone (4). The drone (4) has a mounting base (10) at its bottom, and a mounting frame (13) is provided at the bottom of the mounting base (10). A rotating rod (14) is rotatably mounted on the bottom of the mounting frame (13) via a bearing. A mounting rod (16) is installed at the bottom end of the rotating rod (14). A clamp (15) is installed on the mounting rod (16). A rotary bearing is fitted on the outer wall of the water delivery hose (6), and the clamp (15) clamps and fixes the rotary bearing. The spray assembly (3) is set at one end of the mounting rod (16). The mounting bracket (13) is equipped with a servo drive component (12). The output end of the servo drive component (12) is connected to the spray assembly (3) and the mounting rod (16) through the transmission link (11) to adjust the spray angle of the spray assembly (3). Several hose attitude management components (5) are provided at intervals on the water supply hose (6).

2. The UAV-based water spraying maintenance device for canyon piers according to claim 1, characterized in that, The UAV (4) is equipped with a wind speed and direction sensor (17) and a wireless communication unit (18).

3. The UAV-based water spraying maintenance device for canyon piers according to claim 1, characterized in that, The hose attitude management component (5) is a guide or counterweight sleeved on the outside of the water delivery hose (6) to reduce the swing amplitude of the water delivery hose (6) in the air.

4. The UAV-based water spraying maintenance device for canyon piers according to claim 1, characterized in that, The spray assembly (3) includes a mounting base (31) installed at one end of the mounting rod (16). The mounting base (31) has several mounting holes (33) on its side, and a rotating seat (20) is rotatably installed inside each mounting hole (33).

5. A drone-based water spraying maintenance device for canyon piers according to claim 4, characterized in that, The rotating seat (20) is equipped with a nozzle (32) at one end near the high pier. The end of the water supply hose (6) that passes through the clamp (15) is connected to the diversion pipe (22) through a rotary sealing joint. One end of the diversion pipe (22) is fixedly connected to the mounting rod (16). Several water supply branches are provided on the diversion pipe (22). The end of the water supply branch away from the diversion pipe (22) is connected to the water inlet of the nozzle (32).

6. A drone-based water spraying maintenance device for canyon piers according to claim 5, characterized in that, A lever (19) is slidably provided on one side of the mounting base (31). The lever (19) extends along the length of the mounting base (31). The output end of the servo drive component (12) is connected to the lever (19) via a transmission link (11).

7. A drone-based water spraying maintenance device for canyon piers according to claim 6, characterized in that, The rotating seat (20) is provided with an eccentric connecting part, and the actuating rod (19) is hinged to the eccentric connecting part.

8. A drone-based water spraying maintenance device for canyon piers according to claim 1, characterized in that, One side of the automatic winding assembly (7) is provided with a tension sensor (21) for detecting the tension of the water delivery hose (6).

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