Foreign matter removing device for overhead line of power distribution network

Abstract

The invention relates to the technical field of power system line foreign matter removal, and discloses a power distribution network overhead line foreign matter removal device which comprises an insulation operating rod, a mounting frame is arranged on the insulation operating rod, and a cutting saw blade driven by a motor is arranged at the bottom of the mounting frame. A barrier removing plate movably connected with the mounting frame is arranged below the cutting saw blade; during working, the barrier removing plate is arranged on a cable and penetrates below a foreign matter along with movement of the insulating operating rod, the insulating operating rod is pulled downwards to drive the mounting frame to move downwards relative to the barrier removing plate, and the cutting saw blade makes contact with the foreign matter. When the motor is started, the cutting saw blade can cut and cut off the foreign matter wrapping the outside of the cable. The device is simple in structure, convenient to carry, safe to operate and controllable in cost, cables can be effectively prevented from being damaged, and operation safety is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of foreign object removal technology for power system lines, and more particularly to a foreign object removal device for overhead power distribution lines. Background Technology

[0002] During the long-term operation of overhead power distribution lines, lightweight hanging objects such as kite strings, plastic films, canvas, and shade nets are easily entangled or covered on the cable surface due to wind force and human abandonment, becoming a key hidden danger threatening the safe and stable operation of transmission and distribution lines. These foreign objects can not only cause short circuits and grounding faults, leading to power outages, but also accelerate the aging of cable insulation, increasing equipment maintenance costs. In severe cases, they may even cause fires and other safety accidents, directly affecting the normal production and lives of a large number of power users, causing significant economic losses and social impact. Currently, power repair personnel still face numerous challenges in removing foreign objects from power lines. Traditional methods require first requesting a power outage, followed by workers climbing to heights, erecting scaffolding, or using large equipment such as cranes to carry out the work. This process is not only cumbersome and time-consuming, significantly extending fault-handling time, but also poses safety risks associated with working at heights. Furthermore, power outages directly affect the normal power supply to users along the line, reducing power reliability. To address the drawbacks of traditional methods, new removal equipment such as laser cannons and drone-based flamethrowers have gradually emerged in the industry. While these devices do not require power outages, they have significant limitations: firstly, their high cost significantly increases the cost of power operation and maintenance; secondly, they require extremely high levels of professional technical skills from operators, and improper parameter control during operation can easily damage cable insulation or metal conductors, exacerbating the fault and hindering widespread adoption in grassroots operation and maintenance work.

[0003] In addition, some grassroots units have adopted simpler obstacle removal tools, namely, using spliced ​​insulating rods with blades and metal hooks attached to the ends to hook or cut foreign objects. While these tools are convenient to carry, have low operating thresholds, and are inexpensive, making them suitable for removing foreign objects in low-lying and easily accessible scenarios, they still have significant drawbacks in practical applications: First, the temporary binding and fixation of the metal tools and insulating rods results in poor connection stability, making them prone to loosening and falling off during high-altitude pulling and cutting, which not only affects obstacle removal efficiency but may also cause foreign objects to fall and create secondary safety hazards; Second, the operation relies on manual force to hook or scrape, making it difficult to accurately control the force and angle, which can easily scratch the surface of cables, especially for aging and fragile cables, potentially directly damaging the insulation layer and causing new line faults, thus failing to meet the requirements for safe and efficient obstacle removal. Therefore, there is an urgent need for a foreign object removal device for overhead power distribution lines that is simple in structure, easy to carry, safe to operate, cost-controllable, and can effectively avoid damaging cables. Summary of the Invention

[0004] The purpose of this invention is to provide a foreign object removal device for overhead power distribution lines, which is simple in structure, easy to carry, safe to operate, and cost-controllable, and can effectively avoid damaging cables and ensure operational safety.

[0005] The present invention adopts the following technical solution: A foreign object removal device for overhead power distribution lines includes an insulated operating rod with a mounting frame on the rod. A motor-driven cutting saw blade is mounted at the bottom of the mounting frame, and a clearing plate movably connected to the mounting frame is located below the cutting saw blade. During operation, the clearing plate is placed on the cable and, as the insulated operating rod moves, passes under the foreign object. Pulling down the insulated operating rod causes the mounting frame to move downwards relative to the clearing plate, bringing the cutting saw blade into contact with the foreign object. Activating the motor allows the cutting saw blade to cut and remove the foreign object covering the cable.

[0006] Preferably, the clearing plate has an upwardly convex arc-shaped structure.

[0007] Preferably, the arc length of the clearing plate is no greater than one-quarter of the arc length of the cable.

[0008] Preferably, the clearing plate is elastically connected to the mounting bracket.

[0009] Preferably, a support plate is provided at the rear of the clearing plate, and the mounting bracket and the support plate are elastically connected by a spring.

[0010] Preferably, the support plate is provided with a guide rod, the mounting frame has a through guide hole for the guide rod to move through, the spring is sleeved on the outside of the guide rod, and its two ends are fixedly connected to the support plate and the mounting frame respectively.

[0011] Preferably, the top of the mounting frame has a through-cutting groove, and the top of the cutting saw blade extends upward from the cutting groove to the top of the mounting frame.

[0012] Preferably, a drive shaft is provided on the motor, and the cutting saw blade is provided on the drive shaft; one end of the drive shaft extends movably from one side of the mounting frame and is provided with a winding reel, and multiple winding rods are provided on the winding reel along its circumference.

[0013] Preferably, the winding rod is provided with protruding burrs.

[0014] Preferably, the length of the insulating operating rod is adjustable.

[0015] Compared with existing technologies, the advantages of this invention are as follows: By setting a clearing plate movably connected to the mounting frame below the cutting saw blade, the clearing plate is placed directly on the cable surface and serves as a support reference during operation. Pulling down the insulated operating rod only moves the cutting saw blade relative to the clearing plate to cut foreign objects. The clearing plate effectively isolates the cutting saw blade from the cable, avoiding cable scratches and insulation damage caused by improper force application of traditional binding blade tools. It also avoids irreversible damage to cables caused by operational errors of laser cannons and drone flamethrowers, significantly improving the safety of clearing operations. It effectively lowers the operational threshold and cost. Furthermore, the motor-driven cutting method, compared to manual hooking and scraping, provides uniform cutting force and better cutting effect, quickly separating various foreign objects such as kite strings, plastic films, and canvas covering the cable. This avoids the problems of incomplete breakage and residual entanglement of foreign objects in manual operations, further improving the thoroughness and reliability of clearing operations. It ensures clearing efficiency while avoiding secondary safety hazards caused by detached parts or falling foreign objects. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the mounting frame and clearing plate of the present invention; Figure 3 for Figure 2 A magnified view of A in the middle. Detailed Implementation

[0017] The present invention will now be described clearly and completely with reference to the accompanying drawings and embodiments: like Figures 1 to 3As shown, the foreign object removal device for overhead power distribution lines of the present invention includes an insulated operating rod 1. A mounting bracket 2 is fixed to the insulated operating rod 1 by bolts. A cutting saw blade 4 driven by a motor 3 is installed at the bottom of the mounting bracket 2. The motor 3 can be a small, removable battery or a rechargeable model, such as a brushless motor B7050-200KV or a brushless DC motor DLV30S12P-AX. The specific type can be flexibly selected by those skilled in the art according to the actual use scenario and operating accuracy. Below the cutting saw blade 4, there is a mounting bracket connected to the mounting bracket 2. The mounting frame 2 is movably connected to the clearing plate 5, meaning the distance between the mounting frame 2 and the clearing plate 5 is adjustable. This allows for adjustment of the distance between the cutting saw blade 4 and the clearing plate 5, ensuring contact between the cutting saw blade 4 and the foreign object. During operation, the clearing plate 5 is placed above the cable, and the insulated operating rod 1 is pushed towards the foreign object. Once the clearing plate 5 has moved and passed under the foreign object, the insulated operating rod 1 is pulled down, causing the mounting frame 2 to move downwards relative to the clearing plate 5. The cutting saw blade 4 then contacts the foreign object, and the motor 3 is activated to cut and remove the foreign object covering the cable. The clearing plate 5 effectively isolates the cutting saw blade 4 from the cable, avoiding cable scratches and insulation damage caused by improper force application with traditional binding blade tools. It also avoids irreversible damage to the cable caused by operational errors of laser cannons or drone flamethrowers, significantly improving the safety of clearing operations.

[0018] Furthermore, in this invention, the clearing plate 5 has an upwardly convex arc-shaped structure to improve the tightness of contact between the clearing plate 5 and the cable, ensuring the stability of the clearing plate 5 during operation. Preferably, the arc length of the clearing plate 5 is no greater than one-quarter of the arc length of the cable, avoiding the problem of "only adaptable diameter" caused by an excessively long arc surface. When facing cables with larger diameters, the one-quarter arc length arc surface can always maintain stable line contact support. When facing cables with smaller diameters, the arc surface can still fit the cable surface (without completely wrapping it). It can adapt to various cable specifications without replacing the clearing plate 5, greatly improving the universality of the device and meeting the diverse foreign object removal needs of overhead power distribution lines.

[0019] Furthermore, the clearing plate 5 is elastically connected to the mounting frame 2 so that after the cut is complete, as the operator releases the pulling force on the insulated operating rod 1, the mounting frame 2 quickly resets, preventing the cutting saw blade 4 from contacting the cable and further improving the convenience and safety of operation. Specifically, a support plate 6 is fixedly installed at the rear of the clearing plate 5, and the mounting frame 2 is elastically connected to the support plate 6 by a spring 7. Preferably, a guide rod 8 is provided on the support plate 6, and a guide hole 9 is provided through the mounting frame 2 for the guide rod 8 to move through. The spring 7 is sleeved on the guide rod 8, and both ends of the spring 7 are fixedly connected to the support plate 6 and the mounting frame 2 respectively. The sliding arrangement of the guide rod 8 in the guide hole 9 can provide limit and support for the up and down movement of the mounting frame 2, ensuring the accuracy of the installation cutting point.

[0020] Furthermore, a cutting groove 10 is provided through the top of the mounting frame 2, and the top of the cutting saw blade 4 extends upward from the cutting groove 10 to the top of the mounting frame 2. This upward extension of the cutting saw blade 4 allows for the cutting of obstacles such as tree branches around the cable, preventing the branches from tearing or damaging the cable in the wind. In use, simply raise the insulated operating rod 1 to bring the cutting saw blade 4, located above the mounting frame 2, into contact with the branch, and start the motor 3 to begin the cutting operation. This further expands the obstacle-clearing range of the invention and enhances the practicality of the device.

[0021] Furthermore, a drive shaft 11 is mounted on the motor 3, and the cutting saw blade 4 is mounted on the drive shaft 11. One end of the drive shaft 11 extends movably from one side of the mounting bracket 2 and is fitted with a winding reel 12. Multiple winding rods 13 are arranged along the circumference of the winding reel 12. These winding rods 13 are used to wind up and wrap foreign objects hanging or draped on cables, thereby removing foreign objects that are only hanging or draped on cables without the need for cutting, improving operational convenience. This is especially suitable for foreign objects hanging or draped on cables with excessive downward extension at the ends. Preferably, each winding rod 13 in this invention has protruding burrs 14 to increase friction with the foreign object, achieving smooth winding of the foreign object.

[0022] In this invention, the length of the insulating operating rod 1 is adjustable, thus meeting the cleaning needs of cables of various heights. The length adjustment structure of the insulating operating rod 1 can be composed of an inner and outer sleeve in the prior art, that is, the outer sleeve structure has an inner rod that can be stretched outward installed inside, and a locking head is provided at the end of the sleeve for locking the adjusted inner rod. Alternatively, multiple structures with threaded connections at both ends can be used, and those skilled in the art can flexibly select according to actual needs.

[0023] This invention features a simple overall structure, with the core components integrated into the insulated operating rod 1. It requires no splicing or assembly, making it easy to carry and transport, thus solving the cumbersome procedures of traditional high-altitude and crane operations. No power outage application is needed during operation; simply control the arc-shaped obstacle-clearing plate 5 along the cable surface to the underside of the foreign object via the insulated operating rod 1, then pull down the insulated operating rod 1 to drive the cutting saw blade 4 to contact the foreign object and initiate cutting. The entire operation can be completed by a single person, significantly reducing fault handling time and improving power supply reliability. Compared to the high cost and specialized expertise required for laser cannons and drone-based flamethrower devices, this device is cost-effective, has an intuitive operation process, requires no specialized technical training, and is easily and widely applicable in grassroots power maintenance work, demonstrating strong practicality.

Claims

1. A foreign object removal device for overhead power distribution lines, characterized in that: The device includes an insulated operating rod with a mounting bracket. A motor-driven cutting saw blade is mounted on the bottom of the mounting bracket, and a clearing plate movably connected to the mounting bracket is located below the cutting saw blade. During operation, the clearing plate is placed on the cable and, as the insulated operating rod moves, passes under the foreign object. Pulling down the insulated operating rod causes the mounting bracket to move downward relative to the clearing plate, bringing the cutting saw blade into contact with the foreign object. Activating the motor allows the cutting saw blade to cut and remove the foreign object covering the cable.

2. The foreign object removal device for overhead power distribution lines according to claim 1, characterized in that: The clearing plate is an upward-convex arc-shaped structure.

3. The foreign object removal device for overhead power distribution lines according to claim 2, characterized in that: The arc length of the clearing plate is no greater than one-quarter of the arc length of the cable.

4. The foreign object removal device for overhead power distribution lines according to any one of claims 1-3, characterized in that: The clearing plate is elastically connected to the mounting frame.

5. The foreign object removal device for overhead power distribution lines according to claim 4, characterized in that: The clearing plate is provided with a support plate at the rear, and the mounting frame and the support plate are elastically connected by a spring.

6. The foreign object removal device for overhead power distribution lines according to claim 5, characterized in that: The support plate is provided with a guide rod, and the mounting frame has a through guide hole for the guide rod to move through. The spring is sleeved on the outside of the guide rod, and its two ends are fixedly connected to the support plate and the mounting frame respectively.

7. The foreign object removal device for overhead power distribution lines according to claim 1, characterized in that: The mounting frame has a through-cutting groove at the top, and the top of the cutting saw blade extends upward from the cutting groove to the top of the mounting frame.

8. The foreign object removal device for overhead power distribution lines according to claim 1, characterized in that: The motor is equipped with a drive shaft, and the cutting saw blade is mounted on the drive shaft; one end of the drive shaft extends movably from one side of the mounting frame and is equipped with a winding reel, and multiple winding rods are arranged along the circumference of the winding reel.

9. The foreign object removal device for overhead power distribution lines according to claim 8, characterized in that: The winding rod is provided with protruding burrs.

10. The foreign object removal device for overhead power distribution lines according to claim 1, characterized in that: The length of the insulating operating rod is adjustable.

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