An automatic maintenance device for power switches

Abstract

This invention discloses an automatic maintenance device for power switches, including a carrier on which a cleaning mechanism and an adjusting mechanism are mounted. The carrier drives the cleaning mechanism and the adjusting mechanism to move along the length of the insulator. During the movement, the cleaning mechanism washes the insulator. The adjusting mechanism is connected to the cleaning mechanism and increases the water pressure during washing when the cleaning mechanism moves to the hinge between adjacent insulators. The adjusting mechanism provided by this invention can increase the water pressure during washing when the cleaning mechanism moves to the hinge between adjacent insulators, thereby flushing out dust from the hinge gaps and preventing dust accumulation from affecting the subsequent use of the hinge and insulator.

Description

Technical Field

[0001] This invention relates to the field of power equipment technology, specifically to an automatic maintenance device for power switches. Background Technology

[0002] Power switches are key equipment in power systems, used to control and protect power equipment and power lines. To ensure the normal operation of power switches and extend their service life, regular maintenance is required. Existing switchgear is equipped with insulators; during switchgear maintenance, the insulators need to be cleaned regularly to maintain stable electrical performance.

[0003] For example, patent CN112495886A, published on December 6, 2022, discloses an insulator cleaner, relating to the field of power equipment. It includes a support assembly, a drive assembly, and a cleaning assembly. The support assembly is equipped with a cleaning assembly that clamps and rotates insulating skirts for cleaning. The support assembly also has a drive assembly that can drive the entire support assembly to rotate. The drive assembly is driven by high-altitude wind power. The support assembly consists of a rotating sleeve, a connecting frame, and a fixed frame. Two connecting frames are connected by multiple fixed frames. The fixed frames and connecting frames are perpendicular. The connecting frame consists of a crossbar and a rotating sleeve. Multiple crossbars are placed at equal angles on the rotating sleeve. The inner ring of the rotating sleeve has a bearing. One end of each crossbar is connected to the rotating sleeve, and the other end of the crossbar has a connecting sleeve. The two ends of the fixed frame are correspondingly placed on two opposite crossbars. The fixed frame and the crossbars are screwed together. The drive assembly consists of a connecting shaft and a wind vane. The two ends of the connecting shaft... The components are placed in two opposing connecting sleeves. The connecting shaft is rotatably placed within the connecting sleeve, and a wind vane is mounted on the connecting shaft. The cleaning assembly consists of a cleaning strip, an L-shaped rod, a T-shaped rod, cleaning teeth, a rotating lug, and a telescopic rod. Two L-shaped rods are placed on a fixed frame and are located at opposite ends of the fixed frame. The longer sections of the L-shaped rods are vertically placed on the fixed frame, and the shorter sections of the two L-shaped rods are opposite each other. A telescopic rod is mounted on the shorter sections of the L-shaped rods. Multiple T-shaped rods are vertically placed on the fixed frame and are located between the two L-shaped rods. Between the bars, the T-shaped bar is slidably placed on the fixed frame. Both ends of the head of the T-shaped bar are equipped with telescopic rods, and each telescopic rod has a rotating shaft. One end of the cleaning bar is placed on the rotating shaft, and one end of the cleaning bar has a rotating lug. The rotating lug and the rotating shaft are connected accordingly. The other end of the cleaning bar extends towards the fixed frame. The cleaning bars are opposite each other and are flush with the crossbar. The cleaning bars have cleaning teeth. A torsion spring is placed between the rotating lug and the rotating shaft.

[0004] Currently, most insulator cleaning methods involve rinsing, with strict limitations on water pressure. For insulators on high-voltage lines, the rinsing water pressure is generally between 0.3-1 MPa; for insulators on low-voltage lines, it is generally between 0.1-0.2 MPa. Limiting the water pressure prevents excessive impact on the insulator surface during rinsing. A string of insulators consists of insulating components and connecting hardware. Some insulator models use hinges as connecting hardware, which enable the movable connection between insulating components. Since there are gaps within the hinges, dust accumulates in these gaps over time, requiring rinsing. However, the water pressure limitations during insulator rinsing mean that the water flow at that pressure is insufficient to clean the dust from the hinge gaps, leading to dust accumulation and affecting the subsequent use of the hinges and insulators. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic maintenance device for power switches to overcome the above-mentioned shortcomings in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic maintenance device for power switches, comprising a carrier, on which a cleaning mechanism and an adjusting mechanism are mounted. The carrier is used to drive the cleaning mechanism and the adjusting mechanism to move along the length direction of the insulator. During the movement, the cleaning mechanism washes the insulator. The adjusting mechanism is connected to the cleaning mechanism. When the cleaning mechanism moves to the hinge between adjacent insulators, the adjusting mechanism increases the water pressure during washing.

[0007] Preferably, the carrier is a drone, the insulators are arranged vertically, and the drone is used to drive the cleaning mechanism and the adjustment mechanism to rise and fall vertically.

[0008] Preferably, the drone is equipped with a drive mechanism connected to the cleaning mechanism. The drive mechanism is used to drive the cleaning mechanism to move vertically up and down after the drone moves to one side of the insulator.

[0009] Preferably, the cleaning mechanism includes a nozzle, a water tank, and a pipe connecting the nozzle and the water tank. The water tank is fixedly installed on the bottom of the drone, and the nozzle is connected to a drive mechanism, which is used to drive the nozzle to move vertically up and down.

[0010] Preferably, the nozzle is a fan-shaped nozzle.

[0011] Preferably, the adjustment mechanism includes a trigger and an actuator. The trigger is connected to the drive mechanism, and the actuator is connected to the nozzle. When the drive mechanism drives the nozzle to move to the hinge between the insulating parts, the trigger triggers the actuator, and the actuator reduces the nozzle width.

[0012] Preferably, the triggering element includes a limiting rod and a triggering rod. The triggering rod can slide on the limiting rod. The limiting rod is connected to a drive mechanism. The drive mechanism drives the limiting rod to rise and fall vertically. The nozzle is installed at the middle position of the limiting rod and is located on the side of the limiting rod away from the drone.

[0013] Preferably, there are two sets of trigger rods, which are arranged symmetrically along the nozzle.

[0014] Preferably, the limiting rod has a groove inside, and a slider is installed inside the groove. One end of the trigger rod is rotatably connected to the slider. A limiting component is installed inside the slider. The limiting component cooperates with the trigger rod. The limiting component is located on the stroke of the trigger rod swinging upward from the horizontal position. The limiting component can inhibit the upward rotation of the trigger rod. A first spring is arranged inside the groove. The two ends of the first spring are respectively connected to the slider and the groove wall.

[0015] Preferably, the upper surface of the insulator is arc-shaped, and the driving mechanism drives the cleaning mechanism to move from top to bottom along the length of the insulator.

[0016] The beneficial effects of the present invention are as follows: In the above technical solution, the adjustment mechanism provided by the present invention can increase the water pressure during rinsing when the cleaning mechanism moves to the hinge between adjacent insulating parts. The increased water pressure is used to rinse the hinge between adjacent insulating parts, thereby flushing out the dust in the hinge gap and avoiding the accumulation of dust from affecting the subsequent use of the hinge and insulating parts. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a structural schematic diagram of a side view of a drone provided in an embodiment of the present invention;

[0019] Figure 2 A top view of the limiting rod provided in an embodiment of the present invention;

[0020] Figure 3 This is an internal sectional view of the limiting rod provided in an embodiment of the present invention;

[0021] Figure 4 Provided for embodiments of the present invention Figure 3 Enlarged view of point A in the image;

[0022] Figure 5 Provided for embodiments of the present invention Figure 3 Enlarged view of point B in the image.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Drone; 11. Cleaning mechanism; 111. Nozzle; 1111. Spray nozzle; 112. Water tank; 113. Pipe; 12. Adjustment mechanism; 121. Trigger; 1211. Limiting rod; 1212. Trigger rod; 1213. Slide groove; 1214. Slider; 1215. First spring; 1216. Lever; 1217. Connecting rod; 1218. Sleeve; 122. Actuator; 1221. Connecting rod; 1222. Second spring; 1223. Baffle; 123. Limiting element; 1231. Hinge shaft; 1232. First protrusion; 1233. Second protrusion; 13. Drive mechanism; 2. Insulator; 21. Insulating component; 22. Hinge. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] like Figures 1-5 As shown in the figure, an automatic maintenance device for power switches provided in this embodiment of the invention includes a carrier on which a cleaning mechanism 11 and an adjusting mechanism 12 are mounted. The carrier is used to drive the cleaning mechanism 11 and the adjusting mechanism 12 to move along the length of the insulator 2. During the movement, the cleaning mechanism 11 washes the insulating component 21. The adjusting mechanism 12 is connected to the cleaning mechanism 11. When the cleaning mechanism 11 moves to the hinge 22 between adjacent insulating components 21, the adjusting mechanism 12 increases the water pressure during washing.

[0027] Specifically, the carrier can be an aircraft, a lift, or other platform. It only requires moving the cleaning mechanism 11 and the adjusting mechanism 12 to one side of the insulator 2. When the carrier is an aircraft, such as a drone, the aircraft flies to one side of the insulator 2 under the control of external personnel, and then flies along the length of the insulator 2 (i.e., the vertical direction), moving the cleaning mechanism 11 and the adjusting mechanism 12 along the length of the insulator 2. When the carrier is a lift, the cleaning mechanism 11 and the adjusting mechanism 12 are mounted on the lift platform. The lifting of the platform drives the cleaning mechanism 11 and the adjusting mechanism 12 to one side of the insulator 2. The lifting platform then continues to rise and fall, moving the cleaning mechanism 11 and the adjusting mechanism 12 along the length of the insulator 2. The cleaning mechanism 11 includes a water storage device. The container and the water spraying device connected to the container are both mounted on a carrier. During use, the water in the container is transported into the water spraying device, which sprays water onto the insulator 2. Due to the movement of the water spraying device, when the sprayed water impacts the hinge 22 between several insulators 21, the adjusting mechanism 12 adjusts the water pressure sprayed by the water spraying device. The adjusting mechanism 12 can be a valve or other water pressure control mechanism, which is existing technology and will not be described in detail. By adjusting the water pressure, the water flow hitting the hinge 22 has a strong impact force, so that the dust in the gap of the hinge 22 can be washed away with a strong impact force, avoiding the accumulation of dust from affecting the subsequent use of the hinge 22. After washing the hinge 22, the water pressure is adjusted back when washing the subsequent insulators to avoid waste caused by increased water pressure and water flow impact force, as well as damage to the surface of the insulator 2.

[0028] In an optional embodiment, the carrier is a drone 1, the insulator 2 is arranged vertically, and the drone 1 drives the cleaning mechanism 11 and the adjustment mechanism 12 to rise and fall vertically.

[0029] In this embodiment, the vehicle is a drone 1, which is a type of aircraft. The operator can control the drone 1 to fly to one side of the vertical insulator 2 through a remote controller. The drone 1 controls the cleaning mechanism 11 to align with the insulator 2, and then the water sprayed by the cleaning mechanism 11 washes the insulator 2. During washing, the operator controls the drone 1 to rise and fall vertically to clean one side of the insulator 2. Then, the drone 1 flies to the other side of the insulator 2 and washes it from the other side. In addition, under the control of the operator, the drone 1 can also spiral up or down around the insulator 2 so that the water sprayed by the cleaning mechanism 11 can fully contact the insulator 2. The speed of spiraling up or down is slower than the speed of vertical rise and fall, which can achieve comprehensive cleaning of the insulating parts 21 and hinges 22 on the insulator 2. It should be noted that the flight control and motion trajectory control of the drone 1 are existing technologies and will not be described in detail.

[0030] It should be noted that, since the drive mechanism 13 and the adjustment mechanism 12 are both installed on one side of the drone 1, in order to maintain the balance of the drone 1, a counterweight is installed on the other side of the drone 1 to match the weight of the drive mechanism 13 and the adjustment mechanism 12, so that the drone 1 can maintain its balance.

[0031] Furthermore, a drive mechanism 13 is installed on the drone 1. The drive mechanism 13 is connected to the cleaning mechanism 11. The drive mechanism 13 is used to drive the cleaning mechanism 11 to move vertically up and down after the drone 1 moves to one side of the insulator 2.

[0032] In this embodiment, specifically, a drive mechanism 13 is installed on the carrier. The drive mechanism 13 drives the cleaning mechanism 11 to move vertically up and down. The drive mechanism 13 can be a linear drive mechanism, such as an electric telescopic rod or a cylinder. That is, after the drone 1 moves to one side of the insulator 2, the operator can control the drone 1 to hover on one side of the insulator 2 through the controller. When the cleaning mechanism 11 sprays cleaning fluid to rinse the insulator 2, the drive mechanism 13 drives the cleaning mechanism 11 to move vertically up and down on the drone 1, that is, to move along the length direction of the insulator 2. The movement of the cleaning mechanism 11 includes... The following two options are available: 1. Both the container and the water spraying component in the cleaning mechanism 11 are mounted on the drive mechanism 13. The drive mechanism 13 drives the container and the water spraying component, i.e., the entire cleaning mechanism 11, to rise. 2. The container in the water storage is mounted on the drone 1, and the water spraying component is mounted on the drive mechanism 13. The drive mechanism 13 only drives the water spraying component to rise vertically, while the container hovers in the air with the drone 1. In this case, a long water supply pipe 113 or telescopic pipe needs to be installed between the container and the water spraying component to allow for relative movement between the water spraying component and the container, so that water can be smoothly delivered to the interior of the water spraying component during the rising or falling process.

[0033] In an optional embodiment, preferably, the cleaning mechanism 11 includes a nozzle 111, a water tank 112, and a pipe 113 connecting the nozzle 111 and the water tank 112. The water tank 112 is fixedly installed on the bottom of the drone 1. The nozzle 111 is connected to the drive mechanism 13, which is used to drive the nozzle 111 to move vertically up and down.

[0034] Specifically, the cleaning mechanism 11 includes a nozzle 111, a water tank 112, and a pipe 113 connecting the nozzle 111 and the water tank 112. The water tank 112 is fixedly installed on the bottom of the drone 1. A water pump is installed on the water tank 112, which can transport water from the water tank 112 to the pipe 113. The pipe 113 is a flexible hose, preferably a telescopic hose. The water tank 112 is the container used for storing water in the above embodiment. The nozzle 111 is the water spraying component in the above embodiment. The nozzle 111 is installed on the drive mechanism 13. After the drone 1 hovers, the drive mechanism 13 drives the nozzle 111 to rise and fall vertically. The pipe 113 undergoes adaptive deformation and extension. The pump pump delivers water from the water tank 111 to the water tank 112 through the pipe 113. Water from nozzle 12 is delivered to nozzle 111 and sprayed out to rinse insulator 2. Adjustment mechanism 12 is installed at nozzle 1111 of nozzle 111 to control the opening size of nozzle 1111. When nozzle 111 moves to hinge 22 on insulator 2, adjustment mechanism 12 reduces the opening of nozzle 1111. With the water pump output unchanged, reducing the opening of nozzle 1111 increases the impact force of the water flow sprayed from nozzle 1111. At this time, the stronger impact force of the water flow hits hinge 22, which can wash out the dust in the gap of hinge 22 and prevent the accumulation of dust in hinge 22 from affecting the subsequent use of hinge 22.

[0035] Preferably, the nozzle 111 is a fan-shaped nozzle.

[0036] Specifically, the nozzle 111 is a fan-shaped nozzle. The fan-shaped nozzle is flat, and its width direction is perpendicular to its vertical lifting direction. When the water flows into the fan-shaped nozzle, the nozzle makes the water flow into a fan shape. The width of the fan-shaped water flow that impacts the insulating component 21 is greater than or equal to the diameter of the insulating component 21. Therefore, the fan-shaped water flow can cover the surface of the insulating component 21. After the nozzle 111 lifts and lowers once, it can achieve rinsing of one side of the insulator 2. Compared with the cylindrical water flow, the fan-shaped water flow rinses the insulating component 21 more thoroughly and has a relatively higher cleaning efficiency.

[0037] In an optional embodiment, the adjustment mechanism 12 includes a trigger 121 and an actuator 122. The trigger 121 is connected to the drive mechanism 13, and the actuator 122 is connected to the nozzle 111. When the drive mechanism 13 drives the nozzle 111 to move to the hinge 22 between the insulating members 21, the trigger 121 triggers the actuator 122, and the actuator 122 reduces the width of the nozzle 1111 of the nozzle 111.

[0038] Specifically, the adjustment mechanism 12 includes a trigger 121 and an actuator 122. The trigger 121 is connected to the drive mechanism 13. The trigger 121 can be a detection mechanism such as a camera or sensor. The drive mechanism 13 drives the trigger 121 to move up and down synchronously with the nozzle 111. When the trigger 121 is a camera, the camera's shooting surface corresponds to the insulator 2, and it monitors and captures images of the insulator 2 during the rinsing process. When the captured image shows that the water flow from the nozzle 111 contacts the hinge 22, the camera sends a signal to the actuator 122. The actuator 122 is connected to the camera signal. The actuator 122 is a valve. After receiving the signal, the valve adjusts the width of the nozzle 111 of the spray head 111 to increase the impact force of the water flow. Thus, the cooperation between the trigger 121 and the actuator 122 can adjust the width of the nozzle 1111 during the raising and lowering of the spray head 111, that is, adjust the water pressure and water flow impact force, thereby adapting to the rinsing of the hinge 22 between the insulating parts 21. It should be noted that the image acquisition, image recognition and signal transmission of the camera are all existing technologies and will not be described in detail.

[0039] In an optional embodiment, preferably, the trigger 121 includes a limiting rod 1211 and a trigger rod 1212. The trigger rod 1212 can slide on the limiting rod 1211. The limiting rod 1211 is connected to the drive mechanism 13. The drive mechanism 13 drives the limiting rod 1211 to move vertically up and down. The nozzle 111 is installed at the middle position of the limiting rod 1211 and is located on the side of the limiting rod 1211 away from the drone 1.

[0040] Specifically, the trigger element 121 includes a limiting rod 1211 and a trigger rod 1212. The length direction of the limiting rod 1211 is consistent with the width direction of the fan-shaped water flow sprayed from the nozzle 111. The limiting rod 1211 is connected to the drive mechanism 13. After the drone 1 hovers on one side of the insulator 2, the drive mechanism 13 drives the limiting rod 1211 and the nozzle 111 to rise and fall synchronously. The trigger rod 1212 can slide on the limiting rod 1211. This sliding can also be driven by a linear drive mechanism, such as an electric telescopic rod or a cylinder. During the rising and falling of the limiting rod 1211, when the nozzle 111 corresponds to the insulator 2, the trigger rod 1212 slides on the limiting rod 1211. When the insulating element 21 is in operation, water is sprayed from the nozzle to rinse the surface of the insulating element 21. Simultaneously, the trigger rod 1212, driven by the linear drive mechanism, contacts the surface of the insulating element 21. As the limiting rod 1211 drives the trigger rod 1212 and the nozzle 111 to gradually rise or fall, the nozzle 111 moves from the position corresponding to the insulating element 21 to the position corresponding to the hinge 22. The water sprayed from the nozzle 111 contacts the hinge 22, rinsing it. At the same time, the linear drive mechanism drives the trigger rod 1212 to slide on the limiting rod 1211. Since the diameter of the hinge 22 is smaller than that of the insulating element 21... Because of the diameter of the retaining element 21, the sliding direction of the trigger rod 1212 gradually moves closer to one side of the nozzle 111, that is, the trigger rod 1212 gradually moves towards the middle of the limiting rod 1211. When the end of the trigger rod 1212 away from the limiting rod 1211 contacts the hinge 22, the trigger rod 1212 stops moving, and the other end of the trigger rod 1212 contacts the sensor on the limiting rod 1211. This sensor can be a contact signal sensor such as a pressure sensor, which is existing technology and will not be described in detail. After the sensor contacts the limiting rod 1211, it sends a trigger signal to the actuator 122. After receiving the signal, the actuator 122 reduces the width of the nozzle 111's spray port 1111, increasing the impact force of the water flow. The actuator 122 can be the valve in the above embodiment. Similarly, when the nozzle 111 moves from the position of the corresponding hinge 22 to the position of the corresponding insulating component 21, the linear drive mechanism drives the trigger rod 1212 to move from the middle of the limit rod 1211 to one end. The trigger rod 1212 disengages from the sensor. After the sensor loses the contact signal, it controls the actuator 122 to reset and expand the width of the nozzle 111's spray port 1111, reducing the impact force of the water flow and cleaning the insulating component 21.

[0041] Furthermore, there are two sets of trigger rods 1212, which are symmetrically arranged on both sides of the nozzle 111.

[0042] Specifically, two sets of trigger rods 1212 are arranged symmetrically along the nozzle 111. Each set of trigger rods 1212 is connected to an independent linear drive mechanism. These mechanisms move the trigger rods 1212 closer together or further apart. In use, the linear drive mechanism clamps the trigger rods 1212 onto the insulating component 21 or hinge 22. The distance between the two sets of trigger rods 1212 is then equal to the diameter of the insulating component 21 or hinge 22. In practical applications, the length of the trigger rods 1212 can be set, such as 10cm or 15cm. After the distance of 1212 is set, the two sets of trigger rods 1212 clamp the insulator 2 and slide or roll along the surface of the insulator 21 and hinge 22 during the lifting and lowering process. At this time, the relative position between the insulator 2 and the drone 1 is restricted by the trigger rods 1212, so that when the drone 1 is hovering, the staff can determine the distance between the drone 1 and the insulator 2 through the trigger rods 1212, so that the distance between the drone 1 and the insulator 2 is kept within the set standard range, avoiding the problem that the water flow cannot reach the insulator 2 due to the excessive distance between the two.

[0043] Furthermore, a lever 1216 is rotatably mounted on the end of the trigger lever 1212 away from the limit lever 1211.

[0044] Specifically, a connecting rod 1217 is installed at the end of the trigger rod 1212 away from the limiting rod 1211. One end of the connecting rod 1217 is rotatably connected to the trigger rod 1212 via a hinge shaft 1231, which is vertically arranged. A torsion spring is installed at the rotatable connection between the connecting rod 1217 and the trigger rod 1212. A lever 1216 is rotatably connected to the end of the connecting rod 1217 away from the limiting rod 1211. The axial direction of the hinge shaft 1231 at this rotatable connection is consistent with the length direction of the connecting rod 1217. Using these two different rotation directions, the connecting rod 1217 can drive the lever 1216 to rotate horizontally at one end of the trigger rod 1212, and the lever 1216 rotates on its own axis at one end of the connecting rod 1217. In actual use, the drone 1 pushes the two sets of trigger rods 1212 into the hinge 22 on both sides of the top of the insulator 2. During the pushing process, the lever 1216 contacts the hinge 22, and the hinge 22 forces the lever 1216 and the connecting rod 1217 to rotate until they coincide with the trigger rod 1212. The torsion spring between the connecting rod 1217 and the trigger rod 1212 begins to contract. After the lever 1216 passes the insulator 2, the torsion spring resets and drives the connecting rod 1217 and the lever 1216 to reset and rotate. After the connecting rod 1217 and the lever 1216 rotate and reset to the side of the insulator 2 away from the nozzle 111, the drone 1 drives the trigger rod 1212 to reset and move, so that the lever 1216 fits against the hinge 22 of the insulator 2.

[0045] Subsequently, the drive mechanism 13 drives the contact rod and the limit rod 1211 from top to bottom. The trigger rod 1212 is located on both sides of the insulator 2, and the lever 1216 is located on the side of the insulator 2 away from the nozzle 111. When the nozzle 111 is rinsing the insulator 2, the insulator 2 will shake and move away from the nozzle 111 under the impact of the water flow. At this time, the lever 1216 located on the side of the insulator 2 away from the nozzle 111 is used to block the insulator 2, avoiding or reducing the shaking of the insulator 2 during rinsing. In addition, both sets of trigger rods 1212 are equipped with levers 1216, and the two sets of levers 1216 are arranged alternately and are not located on the side of the nozzle 111. Since they are on the same horizontal plane, when the trigger rod 1212 moves from both sides of the insulator 21 to both sides of the hinge 22, the two sets of trigger rods 1212 approach each other without colliding. The torsion spring between the connecting rod 1217 and the trigger rod 1212 gradually resets and drives the lever 1216 to rotate at one end of the trigger rod 1212. When the trigger rod 1212 is located at both ends of the hinge 22, the lever 1216 can also rotate to the side of the hinge 22 away from the nozzle 111. The lever 1216 can follow the movement of the trigger rod 1212 to limit the washing position of the insulator 2 in real time, and also prevent the hinge 22 from moving during washing.

[0046] In an optional embodiment, the limiting rod 1211 has a groove 1213 inside, and a slider 1214 is installed inside the groove 1213. One end of the trigger rod 1212 is rotatably connected to the slider 1214. A limiting member 123 is installed inside the slider 1214. The limiting member 123 cooperates with the trigger rod 1212. The limiting member 123 is located on the stroke of the trigger rod 1212 swinging upward from the horizontal position. The limiting member 123 can suppress the upward rotation of the trigger rod 1212. A first spring 1215 is arranged inside the groove 1213. The two ends of the first spring 1215 are respectively connected to the slider 1214 and the groove wall of the groove 1213.

[0047] Specifically, the limiting rod 1211 has a groove 1213 inside, and a slider 1214 is installed inside the groove 1213. One end of the trigger rod 1212 is rotatably connected to the slider 1214. The vertical cross-section of both the slider 1214 and the groove 1213 is T-shaped, which can prevent the slider 1214 from rotating inside the groove 1213 and prevent the slider 1214 from disengaging from the groove 1213. When the two sets of trigger rods 1212 are clamped on the insulating member 21, the first spring 1215 is in a stretched state. As the limiting rod 1211 and the nozzle 111 move, the sleeve 1218 is sleeved in the middle of the trigger rod 1212, and the sleeve 1218 rotates with the trigger rod 1212. The trigger rod 1212 rolls on the surface of the insulator 21, that is, the sleeve 1218 rolls on the insulator 2 and rotates on the slider 1214. At this time, the distance between the two sets of trigger rods 1212 continuously decreases. The two sets of first springs 1215 drive the slider 1214 to reset and move in the slide groove 1213, so that the two sets of trigger rods 1212 approach each other. When the two sets of trigger rods 1212 are clamped to both sides of the hinge 22, the slider 1214 stops moving in the slide groove 1213 and contacts the actuator 122. The actuator 122 reduces the width of the nozzle 111 spray outlet 1111 and increases the impact force of the water flow. The actuator 122 can be the valve in the above embodiment.

[0048] The trigger rod 1212 is rotatably connected to the slider 1214 via the hinge shaft 1231. The axial direction of the hinge shaft 1231 is consistent with the length direction of the limiting rod 1211. The limiting member 123 includes a first protrusion 1232 and a second protrusion 1233. The first protrusion 1232 is installed on one end face of the trigger rod 1212 that extends into the slider 1214. The second protrusion 1233 is located inside the slider 1214 and is located below the first protrusion 1232. The second protrusion 1233 and the first protrusion 1232 are arranged alternately and inhibit the downward movement of the first protrusion 1232.

[0049] During the movement of the lever 1216, it initially rests against the hinge 22 of the insulator 2. As the trigger rod 1212 moves, the lever 1216 moves from the hinge 22 to the insulator 21, rolling from the hinge 22 surface to the insulator 2 surface. The torsion spring between the connecting rod 1217 and the trigger rod 1212 begins to expand. During rolling, the lever 1216 abuts against the side of the insulator 21 away from the nozzle 111. Because the trigger rod 1212 moves from top to bottom, when the lever 1216 rolls on the surface of the insulator 2, the insulator 2 also forces the lever 1216 and the trigger rod 1212 to move upwards. When one end of the trigger rod 1212 rises, the first protrusion 1232 on the other end face of the trigger rod 1212 is located above the second protrusion 1233. The second protrusion 1233 blocks the descent of the first protrusion 1232, which means the descent of the other end of the trigger rod 1212. This correspondingly prevents the rise of one end of the trigger rod 1212. Therefore, when the trigger rod 1212 moves from top to bottom, the rolling of the lever 1216 along the surface of the insulator 2 will not force the lever 1216 to move upward. The lever 1216 can play a stable limiting role. When it is necessary to remove the lever 1216 and the trigger rod 1212 from the insulator 2, directly pulling the lever 1216 out of the insulator 2 will cause the lever 1216 and the insulator 2 to rub against each other. This could easily damage the insulating component 21. Therefore, in this embodiment, the lever 1216 first moves to the hinge 22, and then the drive mechanism 13 drives the trigger lever 1212 to move upward. At this time, the lever 1216 is located below the insulating component 21, and the lower surface of the insulator 2 is flat. Therefore, when the lever 1216 moves upward, it will be blocked by the insulating component 21. Under the obstruction of the insulating component 21, the trigger lever 1212 is forced to rotate downward. The lever 1216 at one end of the trigger lever 1212 rotates downward. When the trigger lever 1212 rotates downward and contacts the insulating component 21 below the hinge 22, the two sets of trigger levers 1212 repeat the above process and slide on the limiting rod 1211. The gap between them gradually widens, and at the same time, the lever 1216 also follows the descent of one end of the trigger lever 1212 and contacts the insulator 21. The insulator 21 forces the lever 1216 to rotate again, and the torsion spring between the connecting rod 1217 and the trigger lever 1212 expands again. Meanwhile, the first protrusion 1232 at the other end of the trigger lever 1212 moves away from the second protrusion 1233. When the trigger lever 1212 rotates downward by 90°, the trigger lever 1212 completely disengages from the insulator 2, and at the same time, the lever 1216 also disengages from the insulator 2. When the trigger lever 1212 rotates, both the trigger lever 1212 and the lever 1216 roll on the insulator 21 to avoid direct extraction and damage to the insulator 21.

[0050] Furthermore, the upper surface of the insulator 2 is arc-shaped, and the driving mechanism 13 drives the cleaning mechanism 11 to move from top to bottom along the length of the insulator 2.

[0051] Specifically, the upper surface of the insulator 2 is arc-shaped, and the overall structure is hemispherical. To facilitate the movement of the trigger rod 1212 on the insulator 2, the drive mechanism 13 drives the cleaning mechanism 11 to move from top to bottom along the length of the insulator 2. Initially, both sets of trigger rods 1212 are in a retracted state, and the nozzle 1111 of the spray head 111 is also in a reduced state. The distance between the two sets of trigger rods 1212 is equal to or close to the diameter of the hinge 22. Therefore, before the drone 1 hovers, the drive mechanism 13 needs to move the trigger rods 1212 to the top, corresponding to the uppermost hinge 22 of the insulator 2. Subsequently, the drone 1 moves to one side of the insulator 2, squeezing the trigger rods 1212 against both sides of the hinge 22, forcing the hinge 22 to be clamped between the two sets of trigger rods 1212. Then, the drone 1 hovers, and the drive mechanism 13 drives the limiting rod 1211 and the spray head 111 to move from top to bottom, specifically including the following stroke:

[0052] First stroke: The two sets of trigger rods 1212 roll on the hinge 22, and the spray nozzle 1111 of the nozzle 111 corresponds to the middle of the two sets of trigger rods 1212. The water flow sprayed from the spray nozzle 1111 of the nozzle 1111 comes into contact with the hinge 22 and washes the hinge 22.

[0053] Second stroke: As the limit rod 1211 continues to descend, the two sets of trigger rods 1212 move from the hinge 22 to the insulating part 21 and roll on the arc surface of the insulating part 21. At this time, under the pressure of the insulating part 21, the two sets of trigger rods 1212 gradually open and move away from each other. The slider 1214 slides in the slide groove 1213. The first spring 1215 begins to stretch and disengage from the actuator 122. At this time, the actuator 122 adjusts the width of the nozzle 111 spray nozzle 1111, so that the width of the nozzle 1111 is increased, reducing the impact force of the water flow on the insulating part 21, and realizing the non-damaging cleaning of the insulating part 21. It should be noted that a rubber pad is provided on the outer surface of the trigger rod 1211, which can make the trigger rod 1211 soft contact with the insulating part 21, avoiding damage to the insulating part 21 caused by the rolling of the trigger rod 1211 on the insulating part 21.

[0054] Third stroke: The two sets of trigger rods 1212 move from the insulating member 21 to another set of hinges 22 below. When the trigger rods 1212 disengage from the insulating member 21, the first spring 1215 resets, driving the two sets of trigger rods 1212 to move closer to each other. The slider 1214 resets and slides in the groove 1213, and contacts the actuator 122 again. That is, while the two sets of trigger rods 1212 are clamped to the hinge 22, the actuator 122 adjusts the width of the nozzle 111 spray nozzle 1111 to increase the water pressure and impact force of the spray nozzle, so as to wash the dust in the hinge 22 and its gaps. By repeating the above stroke, the entire insulator 2 can be washed.

[0055] It should be noted that a blower mechanism can also be installed on the drive mechanism 13. The blower mechanism can be a blower, a hot air blower, etc., to dry the residual moisture on the insulator 2 after rinsing.

[0056] In an optional embodiment, preferably, the actuator 122 includes a baffle 1223 located inside the fan-shaped nozzle. A connecting rod 1221 is mounted on one side of the baffle 1223. One end of the connecting rod 1221 passes through the nozzle 111 and extends into the groove 1213. A second spring 1222 is mounted on the end of the connecting rod 1222 that extends into the groove 1213. The two ends of the second spring 1222 are respectively connected to the groove wall of the groove 1213 and the connecting rod 1221. The connecting rod 1221 is slidably connected to the nozzle 111.

[0057] Specifically, the actuator 122 includes a baffle 1223, which is located inside the fan-shaped nozzle. A connecting rod 1221 is installed on one side of the baffle 1223. One end of the connecting rod 1221 passes through the nozzle 111 and extends into the slide groove 1213. A second spring 1222 is installed on the end of the connecting rod that extends into the slide groove 1213. Both the connecting rod 1221 and the second spring 1222 are sleeved inside the first spring 1215.

[0058] In the first stroke described above, the two sets of trigger rods 1212 are in a retracted state under the pull of the first spring 1215, and the slider 1214 at one end of the trigger rod 1212 is connected to the connecting rod 1221. Under the elastic force of the first spring 1215, the slider 1214 squeezes the connecting rod 1221, causing the connecting rod 1221 to gradually extend into the nozzle 111. The connecting rod 1221 is T-shaped. The second spring 1222 begins to retract. As the connecting rod 1221 moves, the baffle 1223 moves inside the nozzle 111, reducing the width of the spray nozzle 1111 inside the nozzle 111 and increasing the impact force of the water flow.

[0059] In the second stroke described above: the two sets of trigger rods 1212 gradually open and move away from each other, the slider 1214 slides in the groove 1213, the first spring 1215 begins to stretch, the slider 1214 disengages from the connecting rod 1221, and after losing the resistance of the slider 1214, the second spring 1222 begins to reset and drives the connecting rod 1221 to reset and slide, and the baffle 1223 is driven by the connecting rod 1221 to reset to the initial position in the nozzle 111, that is, to adhere to the inner walls on both sides of the water nozzle 1111, thereby increasing the width of the water nozzle 1111;

[0060] In the third stroke described above: the slider 1214 returns to its original position in the groove 1213 and contacts the connecting rod 1221 again, squeezing the connecting rod 1221 into the nozzle 111 again. The baffle 1223 moves from both sides of the nozzle 1111 towards the center, further reducing the width of the nozzle 1111 inside the nozzle 111 and increasing the impact force of the water flow.

[0061] Furthermore, two sets of baffles 1223 are arranged, and the two sets of baffles 1223 are symmetrically distributed along the central axis of the nozzle 111, with the opposite sides of the two sets of baffles 1223 being inclined.

[0062] Specifically, two sets of baffles 1223 are arranged. The two sets of baffles 1223 move synchronously under the drive of the connecting rod 1221 and the slider 1214. Each baffle 1223 is equipped with a sealing ring to prevent water from flowing out from the gap between the baffle 1223 and the nozzle 111. Simultaneously, holes are opened on both sides of the nozzle 111. The connecting rod 1221 passes through these holes and slides within them. Therefore, sealing rings are also installed at the openings of these holes to prevent water from flowing out. When the two sets of baffles 1223 move synchronously under the drive of the connecting rod 1221 and the slider 1214, the water flows out from the nozzle 111. When the nozzle moves to the middle of the nozzle 111 under the push of 221, the water flow can only flow out from the gap between the two sets of baffles 1223 due to the obstruction of the connecting rod 1221 and the baffle 1223. In this way, the width of the nozzle 1111 is reduced. The opposite side of the two sets of baffles 1223 is set at an angle. The angled setting simulates a fan-shaped nozzle, so that the reduced nozzle 1111 can still spray out a fan-shaped water flow, thereby fully covering the surface of the hinge 22 and increasing the cleaning effect on the surface of the hinge 22 and the gaps.

[0063] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An automatic maintenance device for power switches, characterized in that, The system includes a carrier on which a cleaning mechanism (11) and an adjusting mechanism (12) are mounted. The carrier is used to drive the cleaning mechanism (11) and the adjusting mechanism (12) to move along the length of the insulator (2). During the movement, the cleaning mechanism (11) washes the insulator (21). The adjusting mechanism (12) is connected to the cleaning mechanism (11). When the cleaning mechanism (11) moves to the hinge (22) between adjacent insulators (21), the adjusting mechanism (12) increases the water pressure during washing. The cleaning mechanism (11) includes a nozzle (111), a water tank (112), and a pipe (11) connecting the nozzle (111) and the water tank (112). 3) The water tank (112) is fixedly installed at the bottom of the UAV (1). The nozzle (111) is connected to the drive mechanism (13). The drive mechanism (13) is used to drive the nozzle (111) to move vertically up and down. The adjustment mechanism (12) includes a trigger (121) and an actuator (122). The trigger (121) is connected to the drive mechanism (13), and the actuator (122) is connected to the nozzle (111). When the drive mechanism (13) drives the nozzle (111) to move to the hinge (22) between the insulating parts (21), the trigger (121) triggers the actuator (122), and the actuator (122) reduces the spray of the nozzle (111). The nozzle (1111) has a width of 1111. The triggering element (121) includes a limiting rod (1211) and a triggering rod (1212). The triggering rod (1212) can slide on the limiting rod (1211). The limiting rod (1211) is connected to the driving mechanism (13). The driving mechanism (13) drives the limiting rod (1211) to move vertically up and down. The nozzle (111) is installed at the middle position of the limiting rod (1211) and is located on the side of the limiting rod (1211) away from the UAV (1). There are two sets of triggering rods (1212), which are symmetrically arranged along the nozzle (111). The limiting rod (1211) has a groove (1213) inside. A slider (1214) is installed inside the slide groove (1213). A limiting member (123) is installed inside the slider (1214). The limiting member (123) cooperates with the trigger rod (1212). The limiting member (123) is located on the stroke of the trigger rod (1212) swinging upward from the horizontal position. The limiting member (123) can suppress the trigger rod (1212) from rotating upward. One end of the trigger rod (1212) is rotatably connected to the slider (1214). A first spring (1215) is arranged inside the slide groove (1213). The two ends of the first spring (1215) are respectively connected to the slider (1214) and the groove wall of the slide groove (1213).

2. The automatic maintenance device for power switches according to claim 1, characterized in that, The vehicle is a drone (1), and the insulators (2) are arranged vertically. The drone (1) is used to drive the cleaning mechanism (11) and the adjustment mechanism (12) to rise and fall vertically.

3. The automatic maintenance device for power switches according to claim 2, characterized in that, The drone (1) is equipped with a drive mechanism (13), which is connected to the cleaning mechanism (11). The drive mechanism (13) is used to drive the cleaning mechanism (11) to rise and fall vertically after the drone (1) moves to one side of the insulator (2).

4. The automatic maintenance device for power switches according to claim 1, characterized in that, The nozzle (111) is a fan-shaped nozzle (111).

5. The automatic maintenance device for power switches according to claim 1, characterized in that, The upper surface of the insulator (2) is arc-shaped, and the driving mechanism (13) drives the cleaning mechanism (11) to move from top to bottom along the length of the insulator (2).

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