Live-line water washing device based on unmanned aerial vehicle

Abstract

The application discloses a live water flushing device based on a UAV, which comprises a UAV, a water tank, a high-pressure pump, a water spraying pipe and a nozzle, wherein the water tank and the high-pressure pump are fixedly installed on the UAV, the water tank and the high-pressure pump are connected through a pipeline, the water spraying pipe is fixedly installed on the high-pressure pump and extends to a side away from the water tank, the nozzle is installed at the end of the water spraying pipe, and the water tank is additionally provided with a retreat-stop auxiliary mechanism on the other side relative to the water spraying pipe. The application can timely flush the dirty insulator found in operation and maintenance with live water, does not need to power off the line, does not need to use the method that a live worker climbs a pole to replace the insulator, greatly improves the power supply reliability of the transmission line, reduces the operation risk of the worker, and has great practicability for the daily operation and maintenance control of the management and operation and maintenance departments.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of line maintenance device, and particularly relates to a live water flushing device based on a UAV. BACKGROUND

[0002] Due to the complexity of the transmission line channel, the porcelain, glass and other types of insulators are affected by the external environment, such as rain and fog weather, bird droppings and nest residues, etc., resulting in dirt on the surface of the insulator, and the insulating performance is reduced, which may cause the insulator string to be broken down at any time during the operation of the line, and the line is discharged to the tower, causing the risk of line tripping. For the dirty insulator, the power-off manual pole climbing wiping and live insulator replacement processing method is generally used, and the traditional processing method has the disadvantages of increasing the power-off time and high risk of live operation, which reduces the system reliability and increases the operation risk of the operation personnel. SUMMARY

[0003] In view of the above problems, the present application provides a live water flushing device based on a UAV, which can solve the problems of power-off time, high risk of live operation and high labor intensity caused by the power-off manual pole climbing wiping method.

[0004] To achieve the above purpose, the present application adopts the following technical scheme:

[0005] A live water flushing device based on a UAV, comprising a UAV, a water tank, a high-pressure pump, a water spraying pipe and a nozzle, the water tank and the high-pressure pump are fixedly installed on the UAV, the water tank and the high-pressure pump are connected through a pipeline, the water spraying pipe is fixedly installed on the high-pressure pump and extends away from one side of the water tank, the nozzle is installed at the end of the water spraying pipe, and the water tank is provided with a retreat stop auxiliary mechanism on the other side relative to the water spraying pipe.

[0006] Further, the retreat stop auxiliary mechanism comprises a retreat stop piece, and the retreat stop piece has a certain area on the side away from the water spraying pipe.

[0007] Further, the retreat stop piece is a flexible sheet structure capable of being unfolded.

[0008] Further, the retreat stop auxiliary mechanism further comprises a strutting mechanism, the strutting mechanism is installed on the water tank, the retreat stop piece in the flexible sheet structure capable of being unfolded is installed on the strutting mechanism and can be unfolded or folded under the action of the strutting mechanism.

[0009] Further, the expansion mechanism comprises a cylinder, a piston rod, an elastic element, expansion rods and connecting rods, the cylinder is fixedly installed on the water tank, the cylinder is connected with the high-pressure pump through a pipeline, the piston rod is slidably arranged on the cylinder, and the sliding direction of the piston rod is consistent with the extension direction of the water jet pipe, the expansion rods are multiple, one end of the multiple expansion rods is hingedly connected with the outer periphery of the cylinder, the other end is hingedly connected with one end of the multiple connecting rods one by one, and the other end of the multiple connecting rods is hingedly connected with the end of the piston rod away from the cylinder, and the elastic element is installed on the piston rod so that the piston rod has a tendency to move towards the inside of the cylinder.

[0010] The stop element surrounds the multiple expansion rods, so that when the piston rod is extended and drives the expansion rods to expand, the stop element can be unfolded.

[0011] Further, the elastic element is a tension spring, the elastic element is sleeved on the piston rod, one end is connected with the end of the piston rod away from the cylinder, and the other end is connected with the cylinder.

[0012] Further, the nozzle is an adjustable nozzle.

[0013] Further, the pipeline, through which the cylinder communicates with the high-pressure pump, communicates with the water jet pipe.

[0014] Further, a shielding box, a power supply and an electrical control unit are further included, the shielding box is fixedly installed at the bottom of the unmanned aerial vehicle, and the high-pressure pump, the power supply and the electrical control unit are installed in the shielding box.

[0015] Further, the electrical control unit in the shielding box is independent of the unmanned aerial vehicle.

[0016] Compared with the prior art, the beneficial effects of the present application are:

[0017] The operation mode of the unmanned aerial vehicle carrying the water flushing device can timely perform live water flushing on the dirty insulators found in operation and maintenance, without power-off of the line and without the method of replacing the insulator by a live worker climbing the pole, greatly improving the power supply reliability of the transmission line and reducing the operation risk of the worker, and having great practicality for daily operation and maintenance management and control of the management and operation departments.

[0018] The stop auxiliary mechanism is arranged, and the stop auxiliary mechanism is used for assisting in avoiding the unmanned aerial vehicle from retreating and other conditions to avoid imbalance of the unmanned aerial vehicle when cleaning operation is performed, that is, avoiding the live water flushing device based on the unmanned aerial vehicle from being imbalanced when cleaning operation is performed, thereby affecting normal cleaning. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments description.

[0020] Figure 1 A structure schematic diagram of the charged water flushing device based on the unmanned aerial vehicle from one perspective of the present application;

[0021] Figure 2 A structure schematic diagram of the charged water flushing device based on the unmanned aerial vehicle from another perspective of the present application;

[0022] Figure 3 A structure schematic diagram of the stop-retreating auxiliary mechanism from one perspective of the present application;

[0023] Figure 4 A structure schematic diagram of the stop-retreating auxiliary mechanism from another perspective of the present application.

[0024] In the figure, the marks are as follows: 10-unmanned aerial vehicle; 20-water tank; 40-water spraying pipe; 50-nozzle; 60-stop-retreating auxiliary mechanism; 61-stop-retreating piece; 62-cylinder barrel; 63-piston rod; 64-elastic piece; 65-expanding rod; 66-connecting rod; 70-shielding box. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0026] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0027] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "linking" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0028] Please refer to Figures 1 to 4 The preferred embodiment of the present application provides a live water flushing device based on unmanned aerial vehicle, comprising unmanned aerial vehicle 10, water tank 20, high pressure pump, water pipe 40, nozzle 50 and stop auxiliary mechanism 60, water tank 20, high pressure pump, water pipe 40, nozzle 50 and stop auxiliary mechanism 60 form the main body of live water flushing device to realize live water flushing.

[0029] In the exemplary embodiment, as shown in Figure 1 and Figure 2 The unmanned aerial vehicle 10 can directly use the existing technology with certain load capacity to load water tank 20, high pressure pump, water pipe 40, nozzle 50 and stop auxiliary mechanism 60 and fly to realize flushing operation. Under the premise of meeting the flushing operation as much as possible, the unmanned aerial vehicle 10 should be as light and small as possible to adapt to the operation in a certain space. It can be understood that the unmanned aerial vehicle 10 can also be customized or developed based on its own needs. Exemplarily, M300, T60 and other large unmanned aerial vehicle airborne end applications are preferably selected. This series of products are widely used in power grid. Using this system model does not require users to change the use habit and does not require relearning the driving method. This series of product models can be equipped with RTK module, so that it can resist electromagnetic interference, and the hovering accuracy reaches 1cm, and the payload capacity reaches more than 6kg, which can meet the use requirements.

[0030] The water tank 20 and the high pressure pump are fixedly installed on the unmanned aerial vehicle 10. In the exemplary embodiment, the water tank 20 and the high pressure pump are fixedly installed on the bottom of the unmanned aerial vehicle 10. The water tank 20 and the high pressure pump are connected through pipeline. A certain amount of water or cleaning solvent is stored in the water tank 20, so that it can be sprayed out under the driving action of the high pressure pump.

[0031] The water spraying pipe 40 is fixedly installed on the high-pressure pump and extends away from one side of the water tank 20, and the high-pressure pump can spray the water or cleaning solvent stored in the water tank 20 through the water spraying pipe 40 when the high-pressure pump is running. The water spraying pipe 40 has an extension position effect, that is, the unmanned aerial vehicle 10 is difficult to be very close to the position to be cleaned due to the limited working space and environment, and at this time, through the effect of the water spraying pipe 40, the water spraying position can be aligned with the insulator and the unmanned aerial vehicle 10 can be kept away from the insulator at a certain distance.

[0032] The nozzle 50 is installed at the end of the water spraying pipe 40, and the nozzle 50 can adjust the water spraying mode to adapt to different use requirements, such as for less stubborn dirt, the relatively atomized spraying mode can be used for cleaning, and for relatively stubborn dirt, the relatively concentrated mode can be used for washing. The nozzle 50 is an adjustable nozzle to meet different scene requirements. In the preferred embodiment, the rotating nozzle 50 is used for spraying water, the water mist shape can be adjusted, the spraying distance changes accordingly, generally 1 m to 6 m away, the spraying angle adopts a ball joint atomizing nozzle to assist in adjusting the angle, and the water output can reach 6 L / min.

[0033] According to the use scene, the unmanned aerial vehicle 10 is preferably light and small, and the load capacity is not very large. The volume and weight of the water pump are limited due to the load capacity of the unmanned aerial vehicle 10. The maximum spraying pressure of the conventional water pump is insufficient and cannot meet the requirement of washing the insulator clean, especially for some stubborn dirt accumulated for a long time. Therefore, a greater spraying pressure is needed to effectively wash the insulator. In the present application, a high-pressure pump driven by high-pressure air is preferably used, which can spray water column at high pressure. The part for providing compressed air source can be left on the ground, so the volume and weight will not be too large to affect the unmanned aerial vehicle, and the spraying pressure of 1 MPa or even higher can be obtained to meet the use requirement.

[0034] In the exemplary embodiment, the water spraying pipe 40 is a carbon fiber pipe with a length of 1.4 m. The carbon fiber pipe is light in weight and can ensure that the water spraying is not affected by the wing airflow of the unmanned aerial vehicle. The capacity of the water tank 20 is 1000-2000 ml.

[0035] In the present application, the high-pressure pump is also provided with a retreat prevention auxiliary mechanism 60 on the other side relative to the water tank 20, which is used to assist in avoiding the imbalance of the unmanned aerial vehicle 10 when performing cleaning operation, that is, to avoid the imbalance of the charged water flushing device based on the unmanned aerial vehicle in the present application when performing cleaning operation, thereby affecting the normal cleaning. In the exemplary embodiment, the retreat prevention auxiliary mechanism 60 has a certain area during operation, which can interact with air, and when the unmanned aerial vehicle 10 has a backward movement, the interaction with air can avoid or alleviate the backward movement to a certain extent, and can keep the unmanned aerial vehicle stable to avoid instability of the charged water flushing device during operation, thereby affecting the cleaning operation.

[0036] In the implementation of the charged water flushing device based on the unmanned aerial vehicle in the present application, the water tank 20, the high-pressure pump, the water spraying pipe 40, the nozzle 50 and the retreat prevention auxiliary mechanism 60 on the unmanned aerial vehicle 10 are moved to the vicinity of the insulator to be cleaned, the nozzle 50 is aligned with the insulator to be cleaned, the high-pressure pump is started to drive the water in the water tank 20 out of the water tank 20, and the water is sprayed out of the nozzle 50 through the water spraying pipe 40, thereby realizing timely charged water flushing of the dirty insulator.

[0037] When cleaning relatively stubborn dirty insulators, a water column with a large jet pressure is needed to clean them, which will give the unmanned aerial vehicle 10 a backward force, and since the water spraying pipe 40 has a certain length, the unmanned aerial vehicle 10 may also sway when moving backward. On the one hand, the backward movement or imbalance of the unmanned aerial vehicle affects the normal cleaning operation, and in severe cases, it may even cause the unmanned aerial vehicle 10 to crash. On the other hand, the nozzle 50 originally aligned with the dirty insulator cannot be aligned with the dirty insulator, and since the water tank has a limited capacity, the spraying time is short. Even if the position and direction of the nozzle 50 can be adjusted subsequently, a large amount of water is wasted, and it may not be possible to achieve the expected flushing amount with a single water tank 20, which requires multiple cleaning operations, and the unmanned aerial vehicle 10 needs to move back and forth to replenish water, greatly extending the operation time and intensity. The charged water flushing device based on the unmanned aerial vehicle in the present application is provided with a retreat prevention auxiliary mechanism 60 on the unmanned aerial vehicle 10, which is located on the other side of the high-pressure pump relative to the water spraying pipe 40. When the water spraying pipe 40 sprays water through the nozzle 50, the retreat prevention auxiliary mechanism 60 with a certain area during operation interacts with air to a certain extent to avoid or alleviate the backward movement of the unmanned aerial vehicle, and keeps the unmanned aerial vehicle stable to avoid instability of the charged water flushing device during operation, thereby affecting the cleaning operation.

[0038] In the exemplary embodiment, as shown in Figures 1 to 4As shown, the retreat-preventing auxiliary mechanism 60 comprises a retreat-preventing piece 61, which has a certain area on the side facing away from the water jet pipe 40, and through the certain area, the retreat-preventing piece 61 interacts with the air to avoid or alleviate the retreat of the UAV, and keep the UAV stable. Preferably, the retreat-preventing piece 61 is a flexible sheet structure capable of unfolding, such as a flexible plastic film with certain toughness, which is light in weight and high in strength, and has a certain area when unfolded, and has a certain resistance when interacting with the air, which is used to prevent retreat. In the preferred embodiment, the retreat-preventing piece 61 has a concave structure with high middle and low around when unfolded, and the concave structure is concave to the water tank 20, through which the retreat-preventing effect is better, and the effect can also minimize the resistance of the UAV 10 moving forward.

[0039] In other preferred embodiments, the retreat-preventing auxiliary mechanism 60 can also be a driven mechanism, such as an air gun, and the air outlet of the air gun retreat-preventing auxiliary mechanism 60 is opposite to the nozzle 50, and when the nozzle 50 sprays water, the air gun retreat-preventing auxiliary mechanism 60 sprays air at the same time, and the force generated by the air offsets the force generated by the water sprayed by the nozzle 50, so as to avoid or alleviate the retreat of the UAV, and keep the UAV stable.

[0040] In the exemplary embodiment, the retreat-preventing auxiliary mechanism 60 also comprises an opening mechanism, which is installed on the water tank 20, and the retreat-preventing piece 61 capable of unfolding is installed on the opening mechanism and can be unfolded or folded under the action of the opening mechanism. When it is necessary to avoid or slow down the retreat during operation, the retreat-preventing piece 61 is unfolded through the opening mechanism, and when it is not necessary to prevent retreat, such as during normal flight movement, the retreat-preventing piece 61 is folded through the opening mechanism, and the folded retreat-preventing piece 61 does not affect the flight movement of the UAV.

[0041] In the example embodiment, the expansion mechanism comprises a cylinder 62, a piston rod 63, an elastic member 64, expansion rods 65 and connecting rods 66. The cylinder 62 is fixedly installed on the water tank 20, and the cylinder 62 is connected with the high-pressure pump through a pipeline, so that water can be injected into the cylinder 62 when the high-pressure pump is started. The piston rod 63 is slidingly arranged on the cylinder 62, and can be pushed to slide outward when water is injected into the cylinder 62. The sliding direction of the piston rod 63 is consistent with the extending direction of the water jet pipe 40, that is, the piston rod 62 can be extended away from the water jet pipe 40. The expansion rods 65 are multiple, for example, four, and the multiple expansion rods 65 are uniformly distributed on the outer periphery of the cylinder 62. One end of the multiple expansion rods 65 is hingedly connected with the outer periphery of the cylinder 62, which is the end close to the water tank 20. The other end is hingedly connected with one end of the multiple connecting rods 66 one by one, that is, the number of the connecting rods 66 is consistent with the number of the expansion rods 65. The other end of the multiple connecting rods 66 is hingedly connected with the end of the piston rod 63 away from the cylinder 62. At this time, when the piston rod 63 is extended, it can drive the multiple expansion rods 65 to expand. The elastic member 64 is installed on the piston rod 63 to make the piston rod 63 have a tendency to move into the cylinder 62, that is, when the high-pressure pump stops injecting water into the cylinder 62, the piston rod 63 can move into the cylinder 62 under the action of the elastic member 64 to reset. For example, the elastic member 64 is a tension spring, and the tension spring is sleeved on the piston rod 63, one end of which is connected with the end of the piston rod 63 away from the cylinder 62, and the other end is connected with the cylinder 62.

[0042] The retreat stopper 61 surrounds the multiple expansion rods 65, so that when the piston rod 63 is extended and drives the expansion rods 65 to expand, it can drive the retreat stopper 61 to unfold. The unfolded retreat stopper 61 has a certain area and has a certain resistance when acting on the air, which is used to stop the retreat. When the piston rod 63 is retracted, it can be folded to avoid affecting the flight movement of the unmanned aerial vehicle as much as possible.

[0043] The pipeline through which the cylinder 62 communicates with the high-pressure pump communicates with the water jet pipe 40. During operation, the high-pressure pump is started, and water can be injected into the cylinder 62 at the same time when water is sprayed through the water jet pipe 40, so as to drive the piston rod 63 to extend and make the retreat stopper 61 unfold. When the flushing stops (the high-pressure pump stops), the piston rod 63 retracts under the action of the elastic member 64, and the water in the cylinder 62 flows out through the water jet pipe 40, and at the same time, the retreat stopper 61 is folded. That is, the setting can make the retreat stopper 61 unfold automatically at the same time during the flushing operation, and fold automatically after the cleaning stops.

[0044] The power-on water flushing device based on the unmanned aerial vehicle further includes a shielding box 70, a power supply and an electrical control unit. The shielding box 70 is fixedly installed at the bottom of the unmanned aerial vehicle 10, and the high-pressure pump, the power supply and the electrical control unit are installed in the shielding box 70. The electrical control unit includes a control module, a communication module and the like to realize signal interaction with a ground terminal, such as interaction with a ground station wireless communication unit or a handheld terminal and the like, and can control the high-pressure pump, the retreat auxiliary mechanism 60 and the like according to the instruction of the ground terminal. The high-pressure pump, the power supply and the electrical control unit are installed in the shielding box 70 to ensure the reliability of the power-on cleaning.

[0045] The near electric protection mechanism during the power-on cleaning based on the unmanned aerial vehicle is integrated in the cleaning device to ensure that the power grid and the unmanned aerial vehicle itself are not impacted or damaged during the operation. The power-on cleaning device can safely operate on the power transmission line by adopting isolation, current limiting, overvoltage protection and the like technical means. The main adopted mode is anti-interference design of the electrical control system, including power battery protection and the like design to avoid overheating, over-discharge, high temperature and the like. The overall device is integrated in the mounted metal shielding box, and an antenna, a switch and a charging port and the like are reserved. The device communication mode is similar to the unmanned aerial vehicle, and the power-on water flushing operation is controlled through a remote controller.

[0046] In the exemplary embodiment, the power-on water flushing device cooperates with the camera, obstacle avoidance, GPS positioning and the like functions of the unmanned aerial vehicle 10 itself to assist the operation personnel in operation control and real-time monitoring of the site. The video acquisition and transmission device is composed of a gimbal of the unmanned aerial vehicle and an image transmission system. The visible light camera adopts an integrated design of the camera and the gimbal, has the characteristics of light weight and high stability, and can be quickly connected with the unmanned aerial vehicle platform. In addition, the gimbal camera can output high-definition video to the image transmission system, and the video is transmitted back to the ground to determine the real-time position of the unmanned aerial vehicle.

[0047] In the exemplary embodiment, the control system of the power-on water cleaning plate block in the shielding box 70 is separately controlled and operated with the flight control system of the unmanned aerial vehicle to realize independent control of the cleaning system and the flight system, so as to facilitate deployment of the cleaning device on different types of unmanned aerial vehicles. The control system should have stability, accuracy and reliability to ensure that the unmanned aerial vehicle can accurately perform the cleaning task and realize remote monitoring and control.

[0048] In the exemplary embodiment, the unmanned aerial vehicle 10 adopts a multi-rotor unmanned aerial vehicle, carries a high-definition camera, can transmit the collected video to a ground station wireless communication unit through an airborne wireless communication unit, and the flight state of the multi-rotor unmanned aerial vehicle is monitored by the ground station personnel in real time. At the same time, the control system of the power-on water cleaning device and the flight control system of the unmanned aerial vehicle are separately controlled and operated to cooperate with each other to perform the operation.

[0049] The unmanned aerial vehicle based live water washing device has significantly improved operation efficiency compared with traditional methods, and greatly guarantees the personal safety of operation personnel, and the modular design is convenient for use and maintenance.

[0050] Remote automatic water spraying and image acquisition on the target insulator are realized through ground control, compared with traditional manual methods, the required detection personnel and operation tools are reduced, and the operation time is shortened when the insulator is washed with live water based on the unmanned aerial vehicle. The device is not limited by geographical location and tower height, and the operation personnel only need to control the unmanned aerial vehicle on the ground to perform detection operation, which has low labor intensity, does not need to stop power operation, and avoids the risk of entering a strong electric field for live detection operation, thereby providing guarantee for safe and stable operation of the power grid.

[0051] Meanwhile, the retreat auxiliary mechanism is arranged, which is used for assisting in avoiding the imbalance of the unmanned aerial vehicle when the retreat of the unmanned aerial vehicle is avoided during the cleaning operation, that is, avoiding the imbalance of the unmanned aerial vehicle based live water washing device of the application during the cleaning operation, thereby affecting normal cleaning.

[0052] The operation mode of the unmanned aerial vehicle based water washing device can perform timely live water washing on the dirty insulator found in operation and maintenance, without power outage of the line and without the method of replacing the insulator by climbing the pole by the live operation personnel, thereby greatly improving the power supply reliability of the transmission line, reducing the operation risk of the operation personnel, and having great practicality for daily operation and maintenance management and control of the management and operation department. The device can improve the efficiency of insulator cleaning, has important significance for safe operation of the power system, and has great popularization and application prospect.

[0053] The above is only a specific embodiment of the application, but the protection scope of the application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the application, which should be covered within the protection scope of the application. Therefore, the protection scope of the application should be subject to the protection scope of the claims.

Claims

1. An unmanned aerial vehicle (UAV) mounted live water washing device comprising a UAV (10), characterised in that, It also includes a water tank (20), a high-pressure pump, a water spraying pipe (40) and a nozzle (50), the water tank (20) and the high-pressure pump are fixedly installed on the unmanned aerial vehicle (10), the water tank (20) and the high-pressure pump are connected through a pipeline, the water spraying pipe (40) is fixedly installed on the high-pressure pump and extends away from one side of the water tank (20), the nozzle (50) is installed at the end of the water spraying pipe (40), and the water tank (20) is further provided with a retreat prevention auxiliary mechanism (60) on the other side relative to the water spraying pipe (40); The retreat prevention auxiliary mechanism (60) comprises a retreat prevention piece (61), one side of the retreat prevention piece (61) away from the water spraying pipe (40) has a certain area, and the retreat prevention piece (61) is a flexible sheet structure capable of being unfolded; the retreat prevention auxiliary mechanism (60) further comprises a stretching mechanism, the stretching mechanism is installed on the water tank (20), the flexible sheet structure capable of being unfolded retreat prevention piece (61) is installed on the stretching mechanism and can be unfolded or folded under the action of the stretching mechanism, and the retreat prevention piece (61) is in a concave structure with high periphery and low middle when unfolded, and the concave structure is concave to the water tank (20); The stretching mechanism comprises a cylinder barrel (62), a piston rod (63), an elastic element (64), stretching rods (65) and connecting rods (66), the cylinder barrel (62) is fixedly installed on the water tank (20), the cylinder barrel (62) is connected with the high-pressure pump through a pipeline, the pipeline connected with the high-pressure pump of the cylinder barrel (62) is communicated with the water spraying pipe (40), the piston rod (63) is slidably arranged in the cylinder barrel (62), and the sliding direction of the piston rod (63) is consistent with the extension direction of the water spraying pipe (40), the stretching rods (65) are a plurality of, one end of the stretching rods (65) is hinged with the outer periphery of the cylinder barrel (62), the other end is hinged with one end of the connecting rods (66) one by one, and the other end of the connecting rods (66) is hinged with the end of the piston rod (63) away from the cylinder barrel (62), and the elastic element (64) is installed on the piston rod (63) to make the piston rod (63) have a tendency to move to the inside of the cylinder barrel (62); The retreat prevention piece (61) surrounds the stretching rods (65) so that when the piston rod (63) is stretched and drives the stretching rods (65) to stretch, the retreat prevention piece (61) can be unfolded.

2. The live-line water washing device based on UAV carrying according to claim 1, characterized in that, The elastic element (64) is a tension spring, the elastic element (64) is sleeved on the piston rod (63), one end is connected with the end of the piston rod (63) away from the cylinder barrel (62), and the other end is connected with the cylinder barrel (62).

3. The live-line water washing device based on UAV carrying according to claim 1, characterized in that, The nozzle (50) is an adjustable nozzle.

4. The live-line water washing device based on a UAV according to any one of claims 1 to 3, characterized in that, It also includes a shielding box (70), a power supply and an electrical control unit, the shielding box (70) is fixedly installed at the bottom of the unmanned aerial vehicle (10), and the high-pressure pump, the power supply and the electrical control unit are installed in the shielding box (70).

5. The live-line water washing device based on UAV carrying according to claim 4, characterized in that, The electrical control unit is located inside the shielded box (70) and is independent of the drone (10).

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