Special tool for ground potential fault clearing grading ring

Abstract

The invention relates to a ground potential fault clearing grading ring special tool which is a mechanical tool or an electric tool, insulating rod quick-release connecting pieces of the mechanical tool or the electric tool are fixedly connected with an insulating rod, and the mechanical tool or the electric tool comprises a fixed blade and a movable blade. A mechanical tool or an electric tool sends a fixed blade and a movable blade to the position of the fault grading ring through an insulating rod, the fault grading ring is stuffed between the fixed blade and the movable blade, and the movable blade moves to generate shearing motion to cut off the grading ring by pulling an insulating rope or pressing a remote controller. According to the method, the defect of falling of the grading ring can be handled without power failure of a line, the load loss of a power grid is not caused, the economical efficiency is improved, an operator only needs to stand at a tower end and does not need to go to the lower end of an insulator string, the operation safety is greatly improved, the safety of personal equipment and the power grid is guaranteed, and great economic gain is generated.

Description

Technical Field

[0001] The invention belongs to the technical field of ground potential maintenance in live maintenance of power lines, and in particular relates to a special tool for a ground potential fault clearing grading ring. Background Art

[0002] In the maintenance of overhead transmission lines, the defect of voltage-grading ring falling off accounts for about 60% of the total defect volume, so replacing or removing faulty voltage-grading rings is a very common task. Because the voltage-grading ring is a closed structure, nested in the outer periphery of the insulator core rod, there are two situations after the voltage-grading ring falls off. One is that it is stuck between the insulator shed and the silicon rod, and the other is that it falls off to the bottom of the silicon rod, that is, the conductor end. When it is stuck between the insulator shed and the silicon rod, the voltage-grading ring vibrates after long-term wind and other factors, causing the silicone rubber to wear. Silicone rubber is an insulating layer. After the insulating layer is worn, the electrical clearance of the transmission line is insufficient, resulting in tripping and discharge, or the glass fiber rod inside the silicon rod is exposed to the outside, and the mechanical properties of the core rod are reduced after water vapor and electrical corrosion, and finally cause a drop accident. When the voltage-grading ring falls off to the bottom of the silicon rod, that is, the conductor end, it will cause the conductor to wear, and the conductor strands will be broken, resulting in great maintenance costs.

[0003] In the past, there was only one way to deal with the detachment of the grading ring, that is, power outage. After the power outage, the high-altitude workers used a soft ladder to go down along the surface of the insulator to the position of the grading ring, and then removed the grading ring. When the power grid is out of power, the power grid control personnel consider the importance of the power supply line and the operation mode of the power grid, and can only determine the power outage time according to the annual and monthly power outage plans. Therefore, when the operating personnel discover the defect of the grading ring detachment, it usually takes several months to carry out the power outage. During these few months, the wear of the silicon rod insulation layer or the conductor caused by the detachment of the grading ring will mostly develop into a more serious situation. Therefore, the development of special tools for clearing faulty grading rings at ground potential is of great significance. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a special tool for clearing ground potential faults in grading rings. Not only can the defect of grading ring detachment be handled without power outage of the line, which will not cause power grid load loss and improve economy, but the operator only needs to stand at the end of the pole tower and does not need to go down to the lower end of the insulator string, which greatly improves the safety of the operation, ensures the safety of personnel, equipment and the power grid, and generates great economic benefits.

[0005] The present invention solves the technical problem by the following technical solutions:

[0006] A special tool for clearing a faulty grading ring at ground potential, characterized in that: the tool is a mechanical tool or an electric tool, the insulating rod quick-release connectors of the mechanical tool or the electric tool are fixedly connected to the insulating rod, the mechanical tool or the electric tool comprises a fixed blade and a movable blade, the mechanical tool or the electric tool moves the fixed blade and the movable blade to the position of the faulty grading ring through the insulating rod, the faulty grading ring is inserted between the fixed blade and the movable blade, and the grading ring is cut off by pulling the insulating rope or pressing the remote control to move the movable blade to generate a shearing motion.

[0007] Moreover, the mechanical tool includes a blade, an insulating rod quick-release connector, an insulating rope and an insulating rod. The blade consists of a fixed blade and a movable blade. A gear structure 1 is arranged in the middle of the fixed blade. The movable blade consists of a cutting blade machine driving force arm. The cutting blade machine driving force arm is connected by a fixed rivet. A gear structure 2 is arranged at the front end of the driving force arm. The middle position of the cutting blade is connected to the fixed blade by a rivet. The fixed blade and the driving force arm are meshed and connected by gear structure 1 and gear structure 2. The tail of the fixed blade is inserted into the insulating rod quick-release connector. The insulating rod is fixedly installed in the insulating rod quick-release connector. The two ends of the insulating rope are respectively connected to the driving force arm and the tail of the fixed blade.

[0008] Moreover, the electric tool comprises a base, a driving motor, a disc gear, a bearing gear, a fixed blade, a movable blade, a blade driving unit and a rotating connecting rod, the driving motor is installed on the base, and circular holes are opened at the upper end of the base, the fixed blade, the movable blade and the middle of the blade driving unit to fix the disc gear, and the opening of the fixed blade has an internal thread;

[0009] The fixed blade, movable blade, blade drive unit and base are connected through a rotating connecting piece. A gear structure is provided under the blade drive unit. The bearing gear is connected to the base through a bearing. One end of the bearing gear is a gear structure and meshes with the gear structure of the blade drive unit. The other end of the bearing gear is a bolt structure and cooperates with the disc gear through bolts. The disc gear meshes with the bevel gear in the base. When the driving motor drives the bevel gear of the base to rotate, the disc gear meshes with the bevel gear and drives the bearing gear to rotate. The bearing gear meshes with the gear structure of the blade drive unit and drives it to rotate around the rotating connecting piece. The movable blade also rotates around the rotating connecting piece driven by it to form a shearing motion.

[0010] Moreover, a tension spring is arranged between the driving force arm and the fixed blade. When the insulating rope pulls the driving force arm downward to make the cutting blade move upward, the tension spring is tightened, so that the driving force arm is subjected to an upward reaction force. When the insulating rope is loosened, the driving force arm automatically rebounds and drives the cutting blade to move in the opposite direction to separate it from the fixed blade. By continuously loosening and tightening the insulating rope, the blade is continuously opened and closed, forming a continuous shearing effect, thereby realizing the cutting of the pressure equalizing ring.

[0011] Moreover, the insulating rod connecting piece is a cylindrical structure and a quick-release fastening lock is provided at the end, and the insulating rod is installed in the insulating rod connecting piece through the fastening lock.

[0012] Moreover, pulley blocks are arranged at the tail of the driving force arm and the fixed blade, and the insulating rope is wound around the pulley blocks.

[0013] Moreover, the fixed blade is connected to the rotating connecting piece by bolts. There is a circular protrusion under the fixed blade, which is fixed in place with the circular depression of the base. The top of the base is a fixed blade that cooperates with the thread, and the bottom is a connecting rod gear-shaped platform. The three fixations fix the base, the fixed blade and the rotating connecting rod together.

[0014] Moreover, the circular hole of the blade driving unit has a circle of annular protrusions upwards, which is inserted into the circular hole of the movable blade, and a small circular hole is opened on one side of the movable blade, which is clamped with the cylindrical protrusion of the blade driving unit, so that the blade driving unit and the movable blade are fixed together and rotate together around the rotating connecting rod.

[0015] Moreover, the rotating connecting rod is a special-shaped cylindrical structure, one end of which has internal and external threads, and a nut is used to limit the movement of the blade along the rotating connecting rod. The other end has an external thread that matches the fixed blade, and a gear-shaped platform at the bottom.

[0016] Moreover, the upper ends of the bearing gear and the disc gear are fixed by nuts.

[0017] The advantages and beneficial effects of the present invention are:

[0018] The special tool for clearing faulty equalizing rings of ground potential of the present invention has two forms, one is a manual mechanical power special tool for clearing faulty equalizing rings of ground potential, and the other is an electric power special tool for clearing faulty equalizing rings of ground potential. Both tools and insulating rods adopt a split structure, which reduces the overall structural size and is convenient for transportation and storage. By using special tools to clear faulty equalizing rings, the line can be handled without power outage, reducing the significant economic losses of load loss caused by line power outages, and during operation, personnel do not need to use a soft ladder to go down to the lower end of the insulator. Personnel only need to stand on the tower body to operate, which greatly reduces the risk of personnel operation, and because there is no need to apply for power outage, the operation can be handled at any time, which increases the timeliness of the operation, reduces the risk of structural strength reduction caused by the falling of the equalizing ring and the abrasion of the insulating layer of the insulator, and the safety risk of the abrasion of the wire causing the wire to break, and the tool is extremely convenient to transport and use, simple to operate during the operation, and convenient for industry promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the mechanical tool of the present invention;

[0020] Figure 2 A schematic diagram of a movable blade of a machine tool according to the present invention;

[0021] Figure 3 It is a schematic diagram of a combination of a fixed blade and a movable blade of a mechanical tool of the present invention;

[0022] Figure 4 It is a schematic diagram of a machine tool pulley block of the present invention.

[0023] Figure 5 It is a schematic diagram of the structure of the electric tool of the present invention;

[0024] Figure 6 Another structural schematic diagram of the electrician's tool of the present invention;

[0025] Figure 7 A physical diagram of the machine tool of the present invention;

[0026] Figure 8 A physical diagram of the electric tool of the present invention;

[0027] Fig. 9 This is another physical diagram of the electric tool of the present invention. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below through specific examples. The following examples are only illustrative and not restrictive, and the protection scope of the present invention cannot be limited thereto.

[0029] The invention is mainly used in the operation of clearing fault leveling rings for transmission line ground potential, and includes two forms: one is a manual mechanical power ground potential fault clearing leveling ring special tool, referred to as a mechanical tool. The other is an electric power ground potential fault clearing leveling ring special tool, referred to as an electric tool.

[0030] like Figures 1 to 4 As shown in , 7, the invention is a special tool for clearing ground potential fault equalizing ring, the innovation of which lies in: the mechanical tool comprises a cutter head, an insulating rod quick-release connector 5, a pulley block 3, an insulating rope 4, and an insulating rod.

[0031] The cutter head comprises a fixed blade 1 and a movable blade 2, and a gear structure 10 is provided in the middle of the fixed blade;

[0032] The movable blade is divided into two sections, the first section is the cutting blade 9, and the second section is the driving force arm 7. The two are connected together by a fixed rivet 1. A gear structure 2 8 is provided at the front end of the driving force arm. The middle position of the cutting blade is connected to the fixed blade through rivet 2. After the connection, gear 1 is engaged with gear 2. After the tail end of the driving force arm is pulled by the insulating rope, the cutting blade is driven upward by the gear to form a shearing operation, thereby achieving the purpose of cutting the pressure equalizing ring.

[0033] At the same time, a tension spring 11 is arranged between the driving force arm and the fixed blade. When the insulating rope pulls the driving force arm downward to make the blade move upward, the spring is tightened, so that the driving force arm bears an upward reaction force. Therefore, when the insulating rope is loosened, the driving force arm automatically rebounds to drive the cutting blade to run in the reverse direction to separate it from the fixed blade. By continuously loosening and tightening the insulating rope, the blade is continuously opened and closed, forming a continuous shearing effect, and finally the purpose of cutting off the pressure equalizing ring is achieved;

[0034] The insulating rod connector is a cylindrical structure, and a quick-release fastening lock 6 is provided at the end.

[0035] The insulating rod quick-release connector is fixed to the tail end of the fixed blade by rivets three and four. After the insulating rod is inserted into the cylindrical structure, the quick-release locking buckle is pressed and released to achieve the function of fastening and removing the insulating rod.

[0036] The insulating rod is connected with the quick-release connector to form an integral tool, which is detachable for easy transportation and storage.

[0037] One side of the pulley block is installed at the rear end of the movable blade, and the other side is installed at the rear end of the fixed blade. The pulley block is formed by the cooperation of multiple pulleys to achieve the purpose of labor saving.

[0038] The insulating rope is wound around the pulley block, and the blade is opened and closed by hand pulling the tail end of the insulating rope to cut the pressure equalizing ring.

[0039] like Figure 5 ,6 As shown in Figures 8 and 9, a special tool for clearing ground potential faults and a voltage-equalizing ring of the present invention is innovative in that the electric tool comprises a driving motor 13 and a base 12, a disc gear 14, a bearing gear 16, a fixed blade 18, a movable blade 19, a blade driving unit 17, and a rotating connecting rod 15.

[0040] The upper end of the base and the middle of the fixed blade, the movable blade and the blade driving unit are all provided with circular holes for fixing the gears, and the opening of the fixed blade is provided with internal threads.

[0041] The fixed blade, the movable blade, the blade drive unit and the base are connected by a rotating connection piece, wherein the fixed blade and the rotating connection piece are connected by bolts, a circular protrusion is provided below the fixed blade, and is matched and fixed with a circular depression of the base, a fixed blade matching with a thread is provided above the base, and a connecting rod gear-shaped platform is provided below the base, and the base, the fixed blade and the rotating connecting rod are fixed together by three fixings;

[0042] The blade drive unit has a circular hole with a circle of circular protrusions upwards, which can be sleeved together with the circular hole opened by the movable blade, and a small circular hole is opened on one side of the movable blade, which can be clamped with a cylindrical protrusion of the blade drive unit. The two fixings fix the blade drive unit and the movable blade together, and rotate together around the rotating connecting rod.

[0043] The rotating connecting rod is a special-shaped cylindrical structure, one end of which has internal and external threads, and a nut can be used to limit the movement of the blade along the rotating connecting rod. The other end of the connecting rod that matches the fixed blade has external threads, and the bottom has a gear-shaped platform.

[0044] A gear structure is arranged below the blade driving unit.

[0045] The bearing gear is connected to the base through a bearing. One end of the bearing gear is a gear structure that meshes with the blade drive unit gear, and the other end is a bolt structure that can be matched with the disc gear through bolts and then fixed with a nut.

[0046] After the disc gear is fixed with the bearing gear bolts, it can mesh with the bevel gear in the base. When the motor drives the bevel gear to rotate, the disc gear meshes with the bevel gear and drives the bearing gear to rotate. The bearing gear meshes with the gear part of the blade drive unit and drives it to rotate around the rotating connection. The movable blade also rotates around the rotating connection under its drive, forming a shearing motion, thereby achieving the purpose of cutting the pressure equalizing ring.

[0047] The working process of the present invention is:

[0048] Before going up the tower, connect and fix the insulating rod to the insulating rod quick-release connector of the mechanical tool or electric tool on the ground, separate the cutting blade and the fixed blade, and send the cutter head to the position of the faulty equalizing ring through the insulating rod. Insert the equalizing ring between the two blades, fix the position of the insulating rod so that the cutter head does not move and remains fixed; pull the insulating rope, or start the drive motor to move the cutting blade to produce a shearing motion, cut off the equalizing ring, and after cutting, separate the absolute pressure ring from the insulator to complete the operation of clearing the faulty equalizing ring.

[0049] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A special tool for clearing fault grading rings of ground potential, characterized by: The tool is a mechanical tool or an electric tool, and the insulating rod quick-release connectors of the mechanical tool or the electric tool are fixedly connected to the insulating rod. The mechanical tool or the electric tool comprises a fixed blade and a movable blade. The fixed blade and the movable blade are sent to the position of the faulty voltage-equalizing ring through the insulating rod, and the faulty voltage-equalizing ring is inserted between the fixed blade and the movable blade. The voltage-equalizing ring is cut off by pulling the insulating rope or pressing the remote control to move the movable blade to generate a shearing motion.

2. The special tool for clearing ground potential faults and grading rings according to claim 1 is characterized by: The mechanical tool includes a blade, an insulating rod quick-release connector, an insulating rope and an insulating rod. The blade consists of a fixed blade and a movable blade. A gear structure 1 is arranged in the middle of the fixed blade. The movable blade consists of a cutting blade machine driving force arm. The cutting blade machine driving force arm is connected by a fixed rivet. A gear structure 2 is arranged at the front end of the driving force arm. The middle position of the cutting blade is connected to the fixed blade by a rivet. The fixed blade and the driving force arm are meshed and connected by gear structure 1 and gear structure 2. The tail of the fixed blade is inserted into the insulating rod quick-release connector. The insulating rod is fixedly installed in the insulating rod quick-release connector. The two ends of the insulating rope are respectively connected to the driving force arm and the tail of the fixed blade.

3. The special tool for clearing faults of ground potential grading rings according to claim 1 is characterized in that: The electric tool comprises a base, a driving motor, a disc gear, a bearing gear, a fixed blade, a movable blade, a blade driving unit and a rotating connecting rod, wherein the driving motor is installed on the base, and circular holes are opened at the upper end of the base, the fixed blade, the movable blade and the middle of the blade driving unit for fixing the disc gear, and the opening of the fixed blade has an internal thread; The fixed blade, movable blade, blade drive unit and base are connected through a rotating connecting piece. A gear structure is provided under the blade drive unit. The bearing gear is connected to the base through a bearing. One end of the bearing gear is a gear structure and meshes with the gear structure of the blade drive unit. The other end of the bearing gear is a bolt structure and cooperates with the disc gear through bolts. The disc gear meshes with the bevel gear in the base. When the driving motor drives the bevel gear of the base to rotate, the disc gear meshes with the bevel gear and drives the bearing gear to rotate. The bearing gear meshes with the gear structure of the blade drive unit and drives it to rotate around the rotating connecting piece. The movable blade also rotates around the rotating connecting piece driven by it to form a shearing motion.

4. The special tool for clearing ground potential faults and grading rings according to claim 2 is characterized by: A tension spring is arranged between the driving force arm and the fixed blade. When the insulating rope pulls the driving force arm downward to make the cutting blade move upward, the tension spring is tightened, so that the driving force arm is subjected to an upward reaction force. When the insulating rope is loosened, the driving force arm automatically rebounds to drive the cutting blade to move in the opposite direction to separate it from the fixed blade. By continuously loosening and tightening the insulating rope, the blade is continuously opened and closed, forming a continuous shearing effect, thereby realizing the cutting of the pressure equalizing ring.

5. The special tool for clearing fault grading ring of ground potential according to claim 2 is characterized by: The insulating rod connecting piece is a cylindrical structure and a quick-release fastening lock is provided at the end thereof, and the insulating rod is installed in the insulating rod connecting piece through the fastening lock.

6. The special tool for clearing faults of ground potential grading rings according to claim 2 is characterized by: The tail of the driving force arm and the fixed blade are both provided with pulley blocks, and the insulating rope is wound around the pulley blocks.

7. The special tool for clearing faults of ground potential grading rings according to claim 3 is characterized by: The fixed blade is connected to the rotating connecting piece by bolts. A circular protrusion is provided below the fixed blade, which is fixedly matched with the circular depression of the base. The fixed blade matching with the thread is provided on the base, and a gear-shaped platform of the connecting rod is provided below. The base, the fixed blade and the rotating connecting rod are fixed together at three locations.

8. The special tool for clearing fault grading ring of ground potential according to claim 3 is characterized by: The circular hole of the blade driving unit has a circle of annular protrusions upwards, which is sleeved with the circular hole of the movable blade, and a small circular hole is opened on one side of the movable blade, which is clamped with the cylindrical protrusion of the blade driving unit, so that the blade driving unit and the movable blade are fixed together and rotate together around the rotating connecting rod.

9. The special tool for clearing ground potential faults and grading rings according to claim 3 is characterized by: The rotating connecting rod is a special-shaped cylindrical structure, one end of which has internal and external threads, and a nut is used to limit the movement of the blade along the rotating connecting rod. The other end of the connecting rod that matches the fixed blade has external threads, and a gear-shaped platform is provided at the bottom.

10. The special tool for clearing ground potential fault and grading ring according to claim 3 is characterized by: The upper ends of the bearing gear and the disc gear are fixed by nuts.

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