Self-adapting variable-pitch folding wind-driven cleaning device for post insulator

Abstract

The application relates to a self-adaptive variable-pitch folding wind-driven cleaning device for a post insulator, which comprises a rotating mechanism, a plurality of variable-pitch folding assemblies, a plurality of fan blade assemblies and a brush assembly; the rotating mechanism comprises an inner cover and an outer shell; the variable-pitch folding assembly comprises a folding box, a semicircle ball, a reset spring, a torque box, a torsion bar and a torque spring piece; the folding box is fixed on the outer wall of the outer shell, the folding box is provided with a semicircle ball groove and a spring cavity; the semicircle ball is arranged in the semicircle ball groove; the reset spring is arranged in the spring cavity, the bottom of the reset spring is connected with the folding box, and the top of the reset spring is connected with the semicircle ball; the torque box is fixed on the semicircle ball; the bottom of the torsion bar is arranged in the torque box; the torque spring piece is wound around the bottom of the torsion bar in multiple turns, one end of the torque spring piece is fixedly connected with the torsion bar, and the other end of the torque spring piece is fixedly connected with the torque box. The device can change the angle of the fan blade and realize the folding of the fan blade according to the wind force by arranging the variable-pitch folding assembly, so that the self-adaptive opening and closing cleaning function and the self-protection purpose of the cleaning device are achieved.

Description

Technical Field

[0001] This invention belongs to the field of insulator cleaning technology, and in particular relates to a wind-driven cleaning device for column insulators with adaptive pitch folding. Background Technology

[0002] Insulators, as key components ensuring electrical insulation and mechanical support in power systems, are widely used in transmission lines, substations, and other facilities. Prolonged exposure to complex outdoor environments makes insulator surfaces highly susceptible to accumulating dust, salt, industrial pollutants, bird droppings, and other impurities, forming a layer of contaminants. In humid climates, this contaminant layer significantly reduces the insulation performance of insulators, leading to increased leakage current and even flashover faults, seriously threatening the safe and stable operation of the power system. According to statistics, approximately 35% of power equipment failures are related to decreased insulation performance, and nearly 60% of these are caused by contaminant accumulation. Therefore, regular and effective cleaning of insulator surfaces is a crucial measure for preventing flashover accidents and ensuring a reliable power supply.

[0003] Currently, there are various cleaning technologies for insulator surfaces, mainly divided into power-off cleaning, power-on wiping, and live cleaning. Among them, live cleaning includes live water cleaning, live electric blowing cleaning, live dry cleaning, and live chemical cleaning.

[0004] Of the cleaning methods mentioned above, cleaning during power outages typically involves using cloths or simple tools to clean the equipment, but this can result in incomplete cleaning. Furthermore, some equipment experiences infrequent power outages, leading to delays in cleaning. Live-line water cleaning may be affected by contaminants and salt deposits, resulting in incomplete cleaning, and in humid environments, it can also be harmful to personnel. Live-line electric blowing cleaning may cause secondary contamination of insulators by the blown-out dust, and excessive air pressure may blow off equipment components, affecting power transmission safety. Live-line driven chemical cleaning suffers from problems such as the heavy sweeper, making operation inflexible and creating cleaning blind spots. It is also ineffective for non-vertically suspended insulators. Additionally, placing the electric motor close to high-voltage equipment during operation can affect the safe clearance of the high-voltage equipment, posing a safety hazard.

[0005] It is evident that existing insulator surface cleaning methods have many shortcomings in terms of safety, cleaning effect, applicability, and cost. There is an urgent need to develop an efficient, safe, environmentally friendly, and energy-saving insulator surface cleaning method to meet the growing reliability requirements of the power system. Summary of the Invention

[0006] The main objective of this invention is to propose an adaptive pitch folding wind-driven cleaning device for column insulators, which can effectively solve the problems in the background art.

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

[0008] A wind-driven cleaning device for column insulators with adaptive pitch folding includes a rotating mechanism, several pitch folding assemblies, several fan blade assemblies, and a brush assembly.

[0009] The rotating mechanism includes

[0010] The inner cover is fixedly fitted onto the end of the insulating post of the post insulator;

[0011] The outer shell is rotatably fitted over the inner cover and is connected to the inner cover via a bearing.

[0012] The plurality of pitch folding components are circumferentially spaced on the housing, the pitch folding components including

[0013] A folding box is fixed to the outer wall of the outer shell, and the middle part of the folding box has a hemispherical groove and a spring cavity that are interconnected.

[0014] A hemisphere is placed in the hemisphere groove;

[0015] A return spring is placed in the spring cavity, with its bottom fixedly connected to the folding box and its top fixedly connected to the hemisphere;

[0016] A torque box is fixed on the hemisphere, and the top of the torque box has a torque rod hole;

[0017] A torsion bar, with its bottom passing through the torque bar hole and placed inside the torque box;

[0018] A torque spring is wound in multiple turns around the bottom of the torsion bar. One end of the torque spring is fixedly connected to the torsion bar, and the other end is fixedly connected to the torque box.

[0019] The plurality of fan blade assemblies are correspondingly disposed on the top of the plurality of torsion bars, and the fan blade assembly includes

[0020] The fan blades are fixedly connected to the torsion bar at the bottom and are arranged at a certain angle.

[0021] The brush assembly includes

[0022] The brush rod has one end fixedly connected to the outer wall of the housing, and the other end extends to the outside of the insulating disc of the post insulator;

[0023] The brush bristles are fixed to the end of the brush handle away from the outer casing and are embedded between multiple insulating discs.

[0024] Preferably, the inner cover has a cover bottom on the side away from the insulating disc, and the outer cover has a shell bottom on the side away from the insulating disc. The outer side of the cover bottom and the inner side of the shell bottom are each provided with corresponding annular ball grooves, and there are a number of balls in the two annular ball grooves.

[0025] Preferably, a connecting cylinder is fixedly connected to the middle of the outer side of the bottom of the cover, and a connecting cylinder hole is opened in the middle of the bottom of the shell for the connecting cylinder to pass through.

[0026] Preferably, the fan blade assembly further includes

[0027] A connecting plate is fixed to the bottom of the fan blade, and the connecting plate is connected to the torsion bar by bolts.

[0028] Preferably, there are several brush assemblies, which are fixed to the outer wall of the housing at equal circumferential intervals. The lengths of the brush handles of the several brush assemblies are not the same, so that several corresponding bristles are respectively embedded between multiple insulating discs in different areas.

[0029] Preferably, the bristles are fan-shaped.

[0030] Preferably, the brush assembly further includes

[0031] Two rings are fastened to the brush rod, and both ends are fixedly connected to the outer casing by screws.

[0032] This invention provides a wind-driven cleaning device for column insulators with adaptive pitch folding, which has the following advantages:

[0033] 1. When the wind is strong, the force on the fan blades exceeds the constraint force of the torque spring, causing the torque spring to coil and contract. This changes the tilt angle of the fan blades. When the fan blades are parallel to the wind direction, they can no longer generate power to rotate the outer casing, causing the brush rod to stop rotating and cleaning to pause. However, when the wind is extremely strong, the overall force on the fan blades and torque box is significant. This overcomes the initial elasticity of the return spring, pulling the hemisphere out of its groove. The fan blades and torque box fold against the outer wall of the outer casing, preventing damage from the wind and achieving self-protection. This system is applicable to all wind directions. This device, by incorporating a variable-pitch folding assembly, can change the angle of the fan blades and fold them according to the wind force, achieving adaptive on / off cleaning and self-protection of the cleaning device. It not only adapts to harsh environments under varying wind conditions but also reduces wear and damage to the cleaning device, greatly extending its service life.

[0034] 2. This device is driven by natural wind power, does not consume additional electricity, achieves green cleaning, energy saving and environmental protection, and does not require manual operation, saving a lot of manpower, reducing cleaning costs, and also reducing safety hazards. In addition, this device does not require power outages when cleaning, and can clean post insulators in the presence of natural wind, with high cleaning efficiency, ensuring that post insulators are in optimal insulation performance for a long time. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the cleaning principle of the wind-driven cleaning device for adaptive pitch folding of column insulators according to the present invention.

[0036] Figure 2 This is a schematic diagram of the wind-driven cleaning device for adaptive pitch folding of column insulators according to the present invention.

[0037] Figure 3 For the present invention Figure 2 Cross-sectional view of AA in the middle;

[0038] Figure 4 For the present invention Figure 2 Cross-sectional view of BB in the middle;

[0039] Figure 5 This is a cross-sectional view of the wind-driven cleaning device for adaptive pitch folding of column insulators according to the present invention.

[0040] Figure 6 For the present invention Figure 5 Enlarged view of section ii;

[0041] Figure 7 For the present invention Figure 6 A magnified view of a portion of the image.

[0042] In the picture:

[0043] 1. Adaptive pitch folding wind-driven cleaning device for post insulators; 2. Post insulator; 21. Insulating post; 22. Insulating disc;

[0044] 11. Rotating mechanism; 12. Pitch folding assembly; 13. Fan blade assembly; 14. Brush assembly;

[0045] 111. Inner cover; 112. Bearing; 113. Outer shell; 114. Connecting cylinder; 115. Connecting cylinder hole; 116. Ball; 117. Annular ball groove; 118. Cover bottom; 119. Shell bottom;

[0046] 121. Torque box; 122. Torque rod hole; 123. Torque spring; 124. Torque bar; 125. Folding box; 126. Hemispherical groove; 127. Spring cavity; 128. Hemispherical ball; 129. Return spring;

[0047] 131. Connecting plate; 132. Fan blade; 133. Bolt;

[0048] 141. Brush bristles; 142. Brush handle. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0050] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0053] Reference Figure 1 The post-type insulator 2 includes an insulating post 21 and a plurality of insulating discs 22, wherein the plurality of insulating discs 22 are fixedly sleeved on the insulating post 21.

[0054] Reference Figure 1-7The present invention provides a wind-driven cleaning device 1 for column insulators with adaptive pitch folding, including a rotating mechanism 11, a plurality of pitch folding assemblies 12, a plurality of fan blade assemblies 13 and a brush assembly 14.

[0055] The rotating mechanism 11 includes

[0056] The inner cover 111 is fixedly sleeved on the end of the insulating post 21 of the post insulator 2;

[0057] The outer shell 113 is rotatably sleeved outside the inner cover 111 and is connected to the inner cover 111 via a bearing 112;

[0058] The plurality of pitch folding assemblies 12 are circumferentially spaced on the housing 113, the pitch folding assembly 12 including

[0059] The folding box 125 is fixed to the outer wall of the outer shell 113. The middle part of the folding box 125 has a hemispherical groove 126 and a spring cavity 127 that are interconnected.

[0060] A hemisphere 128 is placed in the hemisphere groove 126;

[0061] A return spring 129 is placed in the spring cavity 127, with its bottom fixedly connected to the folding box 125 and its top fixedly connected to the hemisphere 128.

[0062] A torque box 121 is fixed on the hemisphere 128, and the top of the torque box 121 has a torque rod hole 122;

[0063] Torque bar 124, with its bottom passing through torque bar hole 122 and placed inside torque box 121;

[0064] A torque spring 123 is wound in multiple turns around the bottom of the torsion bar 124. One end of the torque spring 123 is fixedly connected to the torsion bar 124, and the other end is fixedly connected to the torque box 121.

[0065] The plurality of fan blade assemblies 13 are correspondingly disposed on the top of the plurality of torsion bars 124. Each fan blade assembly 13 includes a fan blade 132, the bottom of which is fixedly connected to the torsion bar 124 and arranged at a certain inclined angle.

[0066] The brush assembly 14 includes

[0067] The brush rod 142 has one end fixedly connected to the outer wall of the housing 113, and the other end extends to the outside of the insulating disc 22 of the post insulator 2.

[0068] Brush bristles 141 are fixed to the end of the brush rod 142 away from the outer casing 113, and the brush bristles 141 are embedded between a plurality of insulating discs 22.

[0069] In the initial state of use, the fan blade 132 has a certain tilt angle, and the torque spring 123 has a restraining force on it. When a normal wind blows towards the fan blade 132 at a suitable angle of attack, the force on the fan blade 132 does not exceed the restraining force of the torque spring 123, and the tilt angle of the fan blade 132 will not change. Several fan blades 132 generate power under the driving action of the wind to drive the outer casing 113 to rotate, which in turn drives the brush rod 142 to rotate, and the brush bristles 141 clean the dirt between the insulating discs 22.

[0070] When the wind is strong, the force on the fan blade 132 exceeds the restraining force of the torque spring 123. The torque spring 123 coils and contracts, changing the tilt angle of the fan blade 132. When the fan blade 132 is parallel to the wind direction, it can no longer generate power to rotate the outer casing 113, and the brush rod 142 stops rotating, pausing the cleaning process. When the strong wind stops, the fan blade 132 returns to its original shape due to the elastic recovery action of the torque spring 123.

[0071] When the wind is extremely strong, the fan blade 132 and torque box 121 experience significant overall force. This force overcomes the initial elasticity of the return spring 129, pulling the hemisphere 128 out of the hemisphere groove 126. The fan blade 132 and torque box 121 fold onto the folding box 125, preventing them from being damaged by the wind and achieving self-protection. This method is applicable to all wind directions. After the strong wind subsides, the elastic recovery of the return spring 129 causes the hemisphere 128 to re-enter the hemisphere groove 126, and the fan blade 132 and torque box 121 return to their original positions.

[0072] This device, by setting up a pitch folding component 12, can change the angle of the fan blades 132 and fold the fan blades 132 according to the wind force, thereby achieving the purpose of adaptive on / off cleaning function and self-protection of the cleaning device. It can not only adapt to harsh environments under different strong winds, but also reduce the wear and damage of the cleaning device and greatly extend its service life.

[0073] This device is driven by natural wind power, consumes no additional electricity, achieves green cleaning, energy saving and environmental protection, and does not require manual operation, saving a lot of manpower, reducing cleaning costs, and also reducing safety hazards. In addition, the device does not require power outages when cleaning, and can clean the post insulator 2 in the presence of natural wind, with high cleaning efficiency, which can ensure that the post insulator 2 is in the best insulation performance for a long time.

[0074] As a preferred implementation scheme, refer to Figure 6The inner cover 111 has a cover bottom 118 on the side away from the insulating disc 22, and the outer cover 113 has a shell bottom 119 on the side away from the insulating disc 22. The outer side of the cover bottom 118 and the inner side of the shell bottom 119 are provided with corresponding annular ball grooves 117, and there are a number of balls 116 in the two annular ball grooves 117.

[0075] When the outer shell 113 rotates on the inner cover 111 via the bearing 112, the shell bottom 119 is also supported on the cover bottom 118 via a number of balls 116. The design of the cover bottom 118, shell bottom 119, and balls 116 increases the support area and strength of the outer shell 113 and the inner cover 111, ensuring stable rotation of the outer shell 113 on the inner cover 111. In this embodiment, the bearing 112 is preferably a roller bearing.

[0076] As a preferred embodiment, a connecting cylinder 114 is fixedly connected to the middle of the outer side of the cover bottom 118, and a connecting cylinder hole 115 is opened in the middle of the shell bottom 119 for the connecting cylinder 114 to pass through.

[0077] Since the end of the insulating post 21 of the column insulator 2 is connected to a connecting rod (not shown) during use, the inner cover 111 needs to pass through the connecting rod before being clamped and fixed to the insulating post 21 during installation. In this solution, a connecting cylinder 114 is fixedly connected to the middle of the outer side of the cover bottom 118. The inner diameter of the connecting cylinder 114 is slightly larger than that of the connecting rod. During installation, the connecting cylinder 114 is sleeved on the connecting rod, which can guide the insertion of the inner cover 111. After the inner cover 111 is clamped and fixed to the insulating post 21, the connecting cylinder 114 is sleeved on the connecting rod, which also has a certain reinforcing effect on the device.

[0078] In a preferred embodiment, the fan blade assembly 13 further includes

[0079] A connecting plate 131 is fixed to the bottom of the fan blade 132. The connecting plate 131 is connected to the torsion bar 124 by bolts 133, which facilitates the disassembly and replacement of the fan blade 132.

[0080] As a preferred implementation scheme, refer to Figure 1-5 The brush assembly 14 comprises several components, which are fixed to the outer wall of the housing 113 at equal intervals around their circumferences. The lengths of the brush handles 142 of the several brush assemblies 14 are not uniform, so that several corresponding bristles 141 are respectively embedded between multiple insulating discs 22 in different areas.

[0081] The cleaning area of ​​the post insulator 2 is covered by several bristles 141, with each bristle 141 responsible for cleaning one area. This allows for flexible arrangement of each brush assembly 14 according to the shape and surface characteristics of the post insulator 2, enabling the bristles 141 to better conform to the surface of the post insulator 2 for cleaning, avoiding cleaning dead spots, and ensuring that each area is thoroughly cleaned. In this embodiment, there are three brush assemblies 14.

[0082] Of course, for the sake of structural simplicity, one or more long brush assemblies 14 covering the entire cleaning area can also be provided.

[0083] As a preferred implementation scheme, refer to Figure 4 The bristles 141 are fan-shaped, which increases the contact area between the bristles 141 and the post insulator 2, resulting in better cleaning.

[0084] As a preferred implementation scheme, refer to Figure 6-7 The brush assembly 14 also includes

[0085] Two rings 143 are fastened to the brush rod 142, and both ends are fixedly connected to the outer casing 113 by screws 144, which facilitates the fixing and disassembly of the brush rod 142.

[0086] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wind-driven cleaning device for column insulators with adaptive pitch folding, characterized in that: It includes a rotating mechanism, several pitch folding assemblies, several fan blade assemblies, and a brush assembly; The rotating mechanism includes The inner cover is fixedly fitted onto the end of the insulating post of the post insulator; The outer shell is rotatably fitted over the inner cover and is connected to the inner cover via a bearing. The plurality of pitch folding components are circumferentially spaced on the housing. Each pitch folding component includes a folding box, which is fixed to the outer wall of the housing. The middle part of the folding box has a hemispherical groove and a spring cavity that are interconnected. A hemisphere is placed in the hemisphere groove; A return spring is placed in the spring cavity, with its bottom fixedly connected to the folding box and its top fixedly connected to the hemisphere; A torque box is fixed on the hemisphere, and the top of the torque box has a torque rod hole; A torsion bar, with its bottom passing through the torque bar hole and placed inside the torque box; A torque spring is wound in multiple turns around the bottom of the torsion bar. One end of the torque spring is fixedly connected to the torsion bar, and the other end is fixedly connected to the torque box. The plurality of fan blade assemblies are correspondingly disposed on the top of the plurality of torsion bars, and the fan blade assembly includes The fan blades are fixedly connected to the torsion bar at the bottom and are arranged at a certain angle. The brush assembly includes The brush rod has one end fixedly connected to the outer wall of the housing, and the other end extends to the outside of the insulating disc of the post insulator; The brush bristles are fixed to the end of the brush handle away from the outer casing and are embedded between multiple insulating discs.

2. The wind-driven cleaning device for column insulators with adaptive pitch folding as described in claim 1, characterized in that: The inner cover has a cover bottom on the side away from the insulating disc, and the outer cover has a shell bottom on the side away from the insulating disc. The outer side of the cover bottom and the inner side of the shell bottom are each provided with corresponding annular ball grooves, and there are several balls in the two annular ball grooves.

3. The wind-driven cleaning device for column insulators with adaptive pitch folding as described in claim 2, characterized in that: A connecting cylinder is fixedly connected to the middle of the outer side of the bottom of the cover, and a connecting cylinder hole is opened in the middle of the bottom of the shell for the connecting cylinder to pass through.

4. The wind-driven cleaning device for column insulators with adaptive pitch folding according to claim 1, characterized in that: The fan blade assembly also includes A connecting plate is fixed to the bottom of the fan blade, and the connecting plate is connected to the torsion bar by bolts.

5. The wind-driven cleaning device for column insulators with adaptive pitch folding according to claim 1, characterized in that: The brush assembly comprises several components, which are fixed to the outer wall of the housing at equal circumferential intervals. The lengths of the brush handles of the several brush assemblies are not uniform, so that the corresponding bristles are respectively embedded between multiple insulating discs in different areas.

6. The wind-driven cleaning device for column insulators with adaptive pitch folding according to claim 1, characterized in that: The bristles are fan-shaped.

7. The wind-driven cleaning device for column insulators with adaptive pitch folding according to claim 1, characterized in that: The brush assembly also includes Two rings are fastened to the brush rod, and both ends are fixedly connected to the outer casing by screws.

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