Grounding rod structure and control method thereof

Abstract

The invention discloses a grounding rod structure and a control method thereof. The grounding rod structure comprises an operating rod, an electric mechanism and a clamping mechanism, the clamping mechanism comprises a hook and a top block, one end of the hook is provided with a hooking part, the other end of the hook is connected with the end part of the operating rod, the top block is opposite to the hooking part, the electric mechanism comprises a top rod and a driving assembly, the top rod is movably arranged in the operating rod and moves relative to the operating rod, one end of the top rod is connected with the top block, and the other end of the top rod is connected with the driving assembly; a pressure monitor is arranged at the position, used for being in contact with the cable, of the hanging part and / or the top block, and the pressure monitor is connected with the driving assembly. According to the embodiment of the invention, the operation efficiency of the grounding rod in a high-temperature / severe-cold environment and the clamping stability in a wind environment are effectively improved.

Description

Technical Field

[0001] This invention relates to the field of power technology, and in particular to a grounding rod structure and its control method. Background Technology

[0002] In the operation and maintenance of 10kV distribution networks, installing grounding wires is a mandatory measure to ensure the safety of workers. Traditionally, grounding rods, as core safety tools, require operators to hold an insulated rod to attach the grounding wire to the conductor and mechanically lock it. With the continuous expansion of my country's distribution network (exceeding 5.5 million kilometers in 2024), the frequency of grounding operations has surged, placing higher demands on the reliability of tools and operational efficiency.

[0003] Current technology still uses purely mechanical manual grounding rods. Their structure typically consists of three parts: a handle section, an insulating rod, and a clamping end. The handle section has an insulated grip wrapped in non-slip rubber and relies on manual rotation; the insulating rod is usually made of epoxy resin, 1-2 meters long, and transmits rotational torque; the clamping end generally uses a monkey-head hook and a pressure block to form a U-shaped groove, with the pressure block raised and lowered via a threaded drive. Besides the monkey-head hook, there are other clamping structures for grounding rods, such as flat-mouth grounding rods, double-tongue grounding rods, and jaw-mouth grounding rods. During operation, the grounding wire is fixed to the monkey-head hook. The operator holds the insulating rod high, inserting the monkey-head hook into the wire; holding the handle with both hands and rotating it drives the internal screw to move the pressure block upwards; the pressure block and the monkey-head hook form a mechanical clamp on the wire, completing the connection between the grounding wire and the conductor.

[0004] Traditional purely mechanical manual grounding rods, as the current mainstream application solution, have the following core drawbacks:

[0005] High physical exertion during operation: The operation relies on manual rotation of the screw to drive the pressure block, requiring 10-15 continuous rotations to complete the locking process. In high / low temperature environments, wearing insulated gloves significantly reduces friction, making it easy to slip and lose hands, thus prolonging the operation time (≥2 minutes per operation). Workers are prone to heatstroke, frostbite, or muscle strain due to physical exhaustion. According to China Southern Power Grid's 2023 accident statistics, 37% of high-altitude work accidents were directly related to operator fatigue.

[0006] Poor clamping stability: In environments with excessively high wind speeds, both the wire and the grounding rod will sway, causing the grounding rod and the wire to loosen and reducing clamping stability. Summary of the Invention

[0007] This invention provides a grounding rod structure and its control method to solve the problems of low operating efficiency of grounding rods in high temperature / severe cold environments and poor clamping stability in windy environments.

[0008] The present invention provides a grounding rod structure, comprising: an operating rod, an electric mechanism, and a clamping mechanism;

[0009] The clamping mechanism includes a hook and a top block. One end of the hook is provided with a hooking part, and the other end is connected to the end of the operating rod. The top block is disposed opposite to the hooking part. The electric mechanism includes a top rod and a drive assembly. The top rod is movably disposed in the operating rod and is movable relative to the operating rod. One end of the top rod is connected to the top block, and the other end is connected to the drive assembly.

[0010] A pressure monitor is provided at the position where the hook and / or the top block is in contact with the cable. The pressure monitor is connected to the drive assembly. The pressure monitor is used to monitor the pressure between the hook and / or the top block and the cable and send the pressure monitoring data to the drive assembly. The drive assembly is used to drive the top rod and the top block to move according to the pressure monitoring data, and adjust the distance between the hook and the top block to adjust the clamping force of the clamping mechanism on the cable.

[0011] Furthermore, a sleeve is provided at one end of the hook that is connected to the operating rod, and the operating rod is nested inside the sleeve and threadedly connected to the sleeve.

[0012] Furthermore, the drive assembly includes a screw and a drive motor. One end of the screw is nested inside the top rod and threadedly connected to the inner wall of the top rod. The screw is located in the middle of the operating rod, and the other end of the screw is connected to the drive motor.

[0013] Furthermore, the drive motor includes a main motor and an auxiliary motor. The output shaft of the main motor is connected to the screw, and the output shaft of the auxiliary motor is connected to the main motor through a reduction gear set.

[0014] Furthermore, the reduction gear set includes a first gear, a second gear, a third gear, and a fourth gear. The second gear has a larger number of teeth and a larger diameter than the first gear. The first gear is connected to the output shaft of the auxiliary motor. The second gear is disposed on one side of the first gear and meshes with it. The third gear and the second gear are coaxially arranged and connected through a connecting shaft. The fourth gear is disposed between the first gear and the main motor. The third gear meshes with the fourth gear, and the fourth gear is fixedly connected to the main motor.

[0015] Furthermore, including an angle adjustment component, the operating rod includes a first segment and a second segment, a first end of the first segment is connected to the clamping mechanism, the electric mechanism is distributed in the middle of the first segment, and the second end of the first segment is connected to the first end of the second segment through the angle adjustment component;

[0016] The angle adjustment component is used to adjust the connection angle between the first segment and the second segment so that the shortest connection direction between the hook and the top block is perpendicular to the hook segment of the cable.

[0017] Furthermore, the angle adjustment component includes a fastener, a first mating surface disposed at the second end of the first segment, and a second mating surface disposed at the second end of the second segment. The first and second mating surfaces are disposed opposite to each other. Both the first and second mating surfaces are provided with a plurality of annular and equally spaced protruding teeth. By adjusting the relative angle between the first and second mating surfaces, the protruding teeth of the two surfaces mesh at different positions, thereby realizing the angle adjustment of the first and second segments. The fastener is simultaneously connected through the first and second segments to achieve a fixed connection between the first and second mating surfaces.

[0018] Furthermore, the handheld end of the control stick is provided with a remote control device, which is mounted around the outside of the handheld end and is wirelessly connected to the drive assembly.

[0019] This invention provides a control method based on the grounding rod structure, comprising:

[0020] When the pressure value of the pressure monitoring data is stable within the first preset range, the clamping force of the clamping mechanism on the cable is constant, the drive component is not activated, and the top rod and top block remain stationary.

[0021] When the pressure value of the pressure monitoring data exceeds the first preset range, the clamping force of the clamping mechanism on the cable decreases, the driving component is activated, and the top rod is controlled to move to reduce the distance between the top block and the hanging part, so that the pressure value of the pressure monitoring data is stabilized within the first preset range.

[0022] This invention provides a control method based on the grounding rod structure, comprising:

[0023] When the pressure value of the pressure monitoring data stabilizes within a first preset range, the clamping force of the clamping mechanism on the cable remains stable, the drive component does not start, and the top rod and top block remain stationary.

[0024] When the pressure value of the pressure monitoring data stabilizes within the second preset range, the clamping force of the clamping mechanism on the cable decreases, the auxiliary motor in the drive assembly starts, the main motor does not start, and the control rod moves to reduce the distance between the top block and the hanging part, so that the pressure value of the pressure monitoring data stabilizes again within the first preset range.

[0025] When the pressure value of the pressure monitoring data exceeds the second preset range, the clamping force of the clamping mechanism on the cable decreases, the main motor starts first, controls the top rod to move and reduce the distance between the top block and the hanging part, so that the pressure value of the pressure monitoring data stabilizes within the second preset range, the main motor stops, the auxiliary motor starts again, controls the top rod to move and reduce the distance between the top block and the hanging part, so that the pressure value of the pressure monitoring data stabilizes again within the first preset range;

[0026] Wherein the first preset range falls completely within the second preset range, and the span of the first preset range is smaller than the span of the second preset range.

[0027] As can be seen from the above technical solutions, the present invention has the following advantages:

[0028] On the one hand, by setting an electric mechanism on the control stick to realize the automatic lifting and moving of the top block, it is possible to improve the operating efficiency without having to rotate the control stick by hand in high temperature / severe cold environments;

[0029] On the other hand, by setting a pressure monitor to monitor the pressure between the clamping mechanism and the cable, the drive component drives the top rod and top block to move according to the pressure monitoring data, and adjusts the clamping force of the clamping mechanism. In environments with excessive wind speed, if the wire and grounding rod become loose due to shaking, the pressure monitor will provide real-time feedback on the pressure data changes, and the drive component will be controlled in a timely manner to adjust the distance between the top block and the hook connection, thereby improving clamping stability. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the overall structure of a grounding rod provided in an embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the clamping mechanism in the overall structure of a grounding rod structure provided in an embodiment of the present invention;

[0033] Figure 3 This is a partial structural diagram of a grounding rod structure provided in an embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of the driving component in a grounding rod structure provided in an embodiment of the present invention;

[0035] Figure 5 This is a schematic diagram of the angle adjustment component in a grounding rod structure provided in an embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram of the assembly structure of the angle adjustment component in a grounding rod structure provided in an embodiment of the present invention.

[0037] Explanation of reference numerals in the attached drawings: 1. Operating rod; 11. First section; 12. Second section; 2. Electric mechanism; 21. Top rod; 221. Screw; 201. Main motor; 202. Auxiliary motor; 203. Reduction gear set; 2031. First gear; 2032. Second gear; 2033. Third gear; 2034. Fourth gear; 3. Clamping mechanism; 31. Hook; 311. Hanging part; 312. Pressure monitor; 313. Sleeve; 32. Top block; 4. Angle adjustment assembly; 41. Convex tooth; 42. Fastener; 5. Remote control device. Detailed Implementation

[0038] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0039] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the present application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0040] Please see Figure 1-6 The present invention provides a grounding rod structure.

[0041] An embodiment of the present invention provides a grounding rod structure, comprising: an operating rod 1, an electric mechanism 2, and a clamping mechanism 3;

[0042] The clamping mechanism 3 includes a hook 31 and a top block 32. One end of the hook 31 is provided with a hooking part 311, and the other end is connected to the end of the operating rod 1. The top block 32 is arranged opposite to the hooking part 311. The electric mechanism 2 includes a top rod 21 and a drive assembly. The top rod 21 is movably arranged inside the operating rod 1 and is moved relative to the operating rod 1. One end of the top rod 21 is connected to the top block 32, and the other end is connected to the drive assembly.

[0043] A pressure monitor 312 is provided at the position where the hook 311 and / or top block 32 are in contact with the cable. The pressure monitor 312 is connected to the drive assembly. The pressure monitor 312 is used to monitor the pressure between the hook 311 and / or top block 32 and the cable and send the pressure monitoring data to the drive assembly. The drive assembly is used to drive the top rod 21 and top block 32 to move according to the pressure monitoring data. Adjusting the distance between the hook 311 and top block 32 of the hook 31 realizes the adjustment of the clamping force of the clamping mechanism 3 on the cable.

[0044] Understandably, in specific implementation, on the one hand, by setting an electric mechanism 2 on the operating rod 1 to realize the automatic lifting and moving of the top block 32, it is possible to improve operating efficiency by eliminating the need to manually rotate the operating rod in high temperature / severe cold environments; on the other hand, by setting a pressure monitor 312 to monitor the pressure between the clamping mechanism 3 and the cable, the drive component drives the top rod 21 and the top block 32 to move according to the pressure monitoring data, adjusting the clamping force of the clamping mechanism 3. In environments with excessive wind speed, if the wire and grounding rod become loose due to shaking, the pressure monitor 312 will provide real-time feedback on the pressure data changes, and promptly control the operation of the drive component to adjust the distance between the top block 32 and the hook 311, thereby improving clamping stability.

[0045] In a more specific embodiment, the end of the hook 31 connected to the operating rod 1 is provided with a sleeve 313, and the operating rod 1 is nested in the sleeve 313 and threadedly connected to the sleeve 313.

[0046] Understandably, in practical implementation, when the threaded connection of the rotating operating rod 1 converts the rotational motion of the operating rod 1 into the linear motion of the operating rod 1 relative to the sleeve 313, the distance between the top block 32 and the hanging part 311 is adjusted, thereby realizing the manual adjustment of the clamping mechanism 3. Therefore, this embodiment realizes the integration of manual and electric dual operation modes for the grounding rod.

[0047] It should be noted that in manual operation mode, the operator rotates the handle of the operating rod 1, which causes the surface of the operating rod 1 to approach the threads of the clamping mechanism 3, creating relative movement between it and the hook 31, thereby driving the top block 32 to move up and down. In electric operation mode, the device does not rotate; the top rod 21 is directly driven to move the top block 32 up and down via the buttons on the remote control device 5. This device can be operated electrically, manually, or in a combination of both, allowing for diverse operations depending on the site conditions, and offers excellent convenience and flexibility.

[0048] It should be noted that the hook 31 is specifically designed for wire and cable splicing. The U-shaped groove structure is height-adapted to the shape of the wire, enabling quick positioning and splicing of the wire. The top block 32, as a key component for wire and cable clamping, is slidably positioned with the hook 31, restricting the movement trajectory of the top block 32 so that it can only move up and down in the vertical direction. This completely avoids rotational offset in the horizontal plane, ensuring that when the top block 32 rises, it can accurately form a closed clamping space with the U-shaped groove of the hook 31, firmly fixing the wire and cable in the groove, clamping it securely without damaging the wire's outer sheath.

[0049] In a more specific embodiment, the drive assembly includes a screw 221 and a drive motor. One end of the screw 221 is nested inside the push rod 21 and threadedly connected to the inner wall of the push rod 21. The screw 221 is located in the middle of the operating rod 1, and the other end of the screw 221 is connected to the drive motor.

[0050] Understandably, in practice, the screw 221 is driven to rotate by a drive motor, and the rotational motion of the screw 221 is converted into the linear motion of the push rod 21 through the threaded connection between the screw 221 and the push rod 21. This improves the stability of lifting and lowering, allows for timely control of stopping and starting, minimizes buffering, and provides significant advantages in precise control.

[0051] In a more specific embodiment, the drive motor includes a main motor 201 and an auxiliary motor 202. The output shaft of the main motor 201 is connected to the screw 221, and the output shaft of the auxiliary motor 202 is connected to the main motor 201 through a reduction gear set 203.

[0052] Understandably, in practice, the reduction gear set 203 reduces the moving speed of the screw 221 and increases the torque.

[0053] The electric mechanism 2 of the device consists of two motors: a main motor 201, which controls the forward and reverse rotation of the screw 221. The rotation of the screw 221 drives the rise and fall of the push rod 21 and the push block 32, thereby achieving the function of the push block 32 pressing or releasing the wires and cables. The other is an auxiliary motor 202, which is connected to a reduction gear set 203. The power of the auxiliary motor 202 is reduced by the reduction gear set 203, resulting in two outcomes: increased torque and decreased speed. The lower the speed, the greater the torque. When the wires and cables swing significantly, the pressure monitor 312 identifies rapid fluctuations. After the algorithm of the electrical control section determines whether a continuous pressure drop occurs, it issues a command to control the auxiliary motor 202 to automatically perform force-locking compensation, ensuring that the clamping force between the clamping mechanism 3 and the wires and cables remains at a stable level and does not loosen due to external factors such as wind swing.

[0054] In a more specific embodiment, the reduction gear set 203 includes a first gear 2031, a second gear 2032, a third gear 2033, and a fourth gear 2034. The second gear 2032 has a larger number of teeth and a larger diameter than the first gear 2031. The first gear 2031 is connected to the output shaft of the auxiliary motor 202. The second gear 2032 is disposed on one side of the first gear 2031 and meshes with the first gear 2031. The third gear 2033 and the second gear 2032 are coaxially disposed and connected through a connecting shaft. The fourth gear 2034 is disposed between the first gear 2031 and the main motor 201. The third gear 2033 meshes with the fourth gear 2034, and the fourth gear 2034 is fixedly connected to the main motor 201.

[0055] Understandably, in practice, the auxiliary motor 202 reduces speed through the first gear 2031 and the second gear 2032, and then transmits the reduced speed to the main motor 201 through the third gear 2033 and the fourth gear 2034.

[0056] It should be noted that the main motor 201 and the auxiliary motor 202 operate independently. When the main motor 201 starts alone, the screw 221 moves faster, which speeds up the reduction or enlargement of the distance between the top block 32 and the hanging part 311. When the auxiliary motor 202 starts alone, the screw 221 moves slower, which enables precise control of the distance between the top block 32 and the hanging part 311.

[0057] In a more specific embodiment, the drive assembly serves as the core power source for the entire grounding rod, integrating key components such as a motor drive board, high-performance battery, control switch, and linear actuator motor. Its compact and rational layout ensures stable power supply and strong power output. The motor is a custom design; in electric control mode, commands are issued via remote control device 5 or control switch, and the motor's rotation directly drives the top block 32 to complete the lifting and lowering action.

[0058] It should be noted that the existing grounding rod has poor angle adaptability: the hook 31 and the operating rod 1 are rigidly connected, and the clamping angle cannot be adjusted. When dealing with inclined conductors and cables, it is necessary to repeatedly adjust the position or use auxiliary tools, which is not only inefficient (angle adjustment accounts for more than 40% of the time) but also prone to hook 31 falling off due to unstable operation, increasing the risk of electric shock.

[0059] In a more specific embodiment, the rod includes an angle adjustment component 4, and the operating rod 1 includes a first segment 11 and a second segment 12. The first end of the first segment 11 is connected to the clamping mechanism 3, the electric mechanism 2 is distributed in the middle of the first segment 11, and the second end of the first segment 11 is connected to the first end of the second segment 12 through the angle adjustment component 4.

[0060] The angle adjustment component 4 is used to adjust the connection angle between the first segment 11 and the second segment 12 so that the shortest connection direction between the hook 31, the hanging part 311 and the top block 32 is perpendicular to the cable hanging segment.

[0061] In a more specific embodiment, the angle adjustment component 4 includes a fastener 42 and a first mating surface disposed at the second end of the first segment 11 and a second mating surface disposed at the second end of the second segment 12. The first mating surface and the second mating surface are disposed opposite to each other. Both the first mating surface and the second mating surface are provided with a plurality of annular and equally spaced protrusions 41. By adjusting the relative angle between the first mating surface and the second mating surface, the protrusions 41 of the two are made to mesh at different positions, thereby realizing the angle adjustment of the first segment 11 and the second segment 12. The fastener 42 is simultaneously connected through the first segment 11 and the second segment 12 to realize the fixed connection between the first mating surface and the second mating surface.

[0062] In a more specific embodiment, fastener 42 is a screw.

[0063] Understandably, in practical implementation, the angle adjustment component 4 is located near the head of the grounding rod. Its core function is to flexibly adjust the hanging angle of the hook 31 to adapt to the installation position requirements of the conductor under different working conditions. The angle adjustment component 4 consists of two parts: the first part is located at the second end of the first segment 11, and the second part is located at the second end of the second segment 12. The two parts are connected by a toothed engagement structure 41, which is locked in place with a claw screw. When the angle needs to be adjusted, the claw screw is loosened, and the teeth 41 of the upper and lower parts of the angle adjustment component 4 are decoupled, allowing the angle to be adjusted freely. After adjusting to the appropriate angle, the claw screw is tightened to make the teeth mesh tightly, locking the tilt angle of the hook 31. The toothed engagement structure has high load-bearing strength and higher stability compared to screw tightening or relying on friction to fix the angle. The grounding wire needs to be connected to the hook 31, so the head of the grounding rod needs to bear a large weight. Using the angle adjustment component 4 can avoid angle deviation caused by vibration and other factors during operation, ensuring the reliability of the connection.

[0064] In a more specific embodiment, the handheld end of the operating stick 1 is provided with a remote control device 5, which is wirelessly connected to the drive assembly. The remote control device 5 is mounted in a wraparound manner on the handheld end of the operating stick 1.

[0065] Understandably, the wraparound mounting structure of the remote control device 5, which fits snugly against the outside of the handle, not only avoids taking up extra operating space but also ensures that the operator's fingers can naturally reach the remote control buttons while holding the handle. This allows for smooth and seamless start-stop control in electric mode without needing to adjust the grip. This integrated mounting design also prevents the remote control device 5 from accidentally falling off, ensuring stability during outdoor operations.

[0066] In a more specific embodiment, the handheld end of the control stick 1 is provided with a handle. The handle, as the direct gripping component for the operator, has a rubber-coated surface. This rubber layer not only provides excellent slip resistance but also increases friction during grip through a special textured design, effectively improving the comfort of the hand during rotational operation. Its ergonomic design conforms to the curvature of the palm, is lightweight, and has a moderately sized grip area, reducing fatigue even during extended use. This truly enables easy one-handed operation and significantly improves work efficiency.

[0067] In a more specific embodiment, the operating rod 1, as the core supporting component of the grounding rod, is made of high-strength insulating material, which has both excellent insulation performance and mechanical strength, and can effectively isolate current and ensure the personal safety of operators.

[0068] In a more specific embodiment, the grounding wire is securely fixed to the hook 31 by high-strength bolts. The connection is tight and has low contact resistance, ensuring smooth conduction of the grounding current. This bolt fixing method not only facilitates installation and disassembly but also ensures connection stability during long-term use, preventing the grounding wire from falling off due to aging lines or vibration, thus ensuring the reliability of the grounding system and fundamentally guaranteeing operational safety.

[0069] This invention also provides a method for adjusting the clamping force of a grounding rod clamping mechanism 3. After the grounding rod clamps the cable, a pressure monitor 312 monitors the pressure between the hook part 311 and / or the top block 32 and the cable, and sends the pressure monitoring data to the drive component. The drive component drives the top rod 21 and the top block 32 to move according to the pressure monitoring data, adjusting the distance between the hook part 311 of the hook 31 and the top block 32 to adjust the clamping force of the clamping mechanism 3 on the cable. In this stage, if the wind speed is too high, the swaying of the wire and cable will cause the grounding rod to sway, which may cause the grounding rod and the wire to loosen. The pressure monitor 312 provides real-time feedback on the pressure data changes, and timely controls the drive component to adjust the distance between the top block 32 and the hook part 311 of the hook 31, thereby improving the clamping stability. However, the swaying of the wire will cause changes in the pressure value monitored by the pressure monitor 312. This change in pressure value does not necessarily indicate unstable clamping force. For example, when the wire sways up and down, even if the grounding rod clamping mechanism 3 maintains a stable clamping of the cable, the upward swaying of the cable due to gravity will increase the pressure on the hook 31's engagement part 311, while the downward swaying will decrease the pressure. The drive mechanism, based on the pressure decrease or increase, immediately drives the top rod 21 to move and adjust the distance between the top block 32 and the engagement part 311. This could lead to excessive clamping force of the clamping mechanism 3, potentially damaging the cable, or insufficient clamping force, potentially causing the clamping mechanism 3 to loosen. Therefore, this example provides a method for adjusting the clamping force of the grounding rod clamping mechanism 3. By designing different trigger conditions, the clamping condition of the clamping mechanism 3 is accurately determined, thereby accurately controlling the operation of the drive component. The specific method is as follows:

[0070] When the pressure value of the pressure monitoring data stabilizes within the first preset range, the clamping force of the clamping mechanism 3 on the cable remains constant, the drive component does not start, and the top rod 21 and the top block 32 remain stationary.

[0071] Understandably, in practice, the conductor may swing, but the clamping mechanism 3 of the grounding rod will still hold the conductor stably. Under the inertia of the grounding rod, the pressure of the conductor on the contact part of the hook 31 will fluctuate. However, when the clamping mechanism 3 holds the conductor stably, the pressure fluctuation range of the conductor on the contact part of the hook 31 is limited. Therefore, when the drive component judges that the pressure value fluctuation is within the first preset range (such as the pressure value is stable within ±10% of the design threshold), it will not work, maintain the current distance between the top block 32 and the hook 311, maintain the current clamping force of the clamping mechanism 3 on the conductor, and reduce the risk of damage to the conductor or loosening of the clamping mechanism 3 and the conductor due to excessive clamping force.

[0072] When the pressure value of the pressure monitoring data exceeds the first preset range, the clamping force of the clamping mechanism 3 on the wire decreases, the drive component is activated, and the top rod 21 is controlled to move to reduce the distance between the top block 32 and the hanging part 311, so that the pressure value of the pressure monitoring data is stabilized within the first preset range.

[0073] Understandably, during actual implementation, the grounding rod may experience misalignment or displacement between its components due to the shaking of the conductor, causing the clamping mechanism 3 to loosen from the conductor. This reduces the clamping force of the clamping mechanism 3 on the conductor, and during pressure fluctuations, the pressure value may periodically fall below the first preset range. At this time, the drive component is activated, controlling the top rod 21 to move and reduce the distance between the top block 32 and the hanging part 311, so that the clamping force of the clamping mechanism 3 on the conductor is stabilized again, that is, the pressure value fluctuation is stabilized within the first preset range.

[0074] It should be noted that if the pressure value is 500N, it is considered that the clamping force of the clamping mechanism 3 on the wire is in a stable clamping state, then the threshold is set to 500N, and the first preset range is 450N~550N.

[0075] This invention also provides a method for adjusting the clamping force of the clamping mechanism 3 based on the grounding rod structure described in the above embodiments:

[0076] When the pressure value of the pressure monitoring data stabilizes within the first preset range, the clamping force of the clamping mechanism 3 on the wire remains stable, the drive component does not start, and the top rod 21 and the top block 32 remain stationary.

[0077] When the pressure value of the pressure monitoring data stabilizes within the second preset range, the clamping force of the clamping mechanism 3 on the wire decreases, resulting in no relative displacement between the wire and the clamping mechanism 3. The auxiliary motor 202 in the drive assembly starts, while the main motor 201 does not start. The control rod 21 moves to reduce the distance between the top block 32 and the hanging part 311, so that the pressure value of the pressure monitoring data stabilizes again within the first preset range.

[0078] Understandably, when there is no relative displacement between the wire and the clamping mechanism 3, the adjustment action occurs while the wire is still swaying, and the pressure value still fluctuates significantly. If the main motor 201 is activated to drive the push rod 21, it may be driven based on the lower pressure value during the fluctuation, causing the top block 32 to move too quickly, the distance between the top block 32 and the hanging part 311 to be too small, and the clamping force to be too large, resulting in damage to the wire. However, by only activating the auxiliary motor 202 to control the movement of the push rod 21, the movement speed is reduced and the torque is increased, avoiding the over-clamping risk caused by the large stroke and high speed drive of the main motor 201. Before the wire swaying subsides, continuous micro-adjustments can be made to gradually approach the target clamping pressure, ultimately achieving stable clamping and fixation of the wire without damage.

[0079] When the pressure value of the pressure monitoring data exceeds the second preset range, the clamping force of the clamping mechanism 3 on the wire decreases, causing the wire to move relative to the clamping mechanism 3. The main motor 201 starts first, controlling the top rod 21 to move and reduce the distance between the top block 32 and the hanging part 311. After the pressure value of the pressure monitoring data stabilizes within the second preset range, the main motor 201 stops, and the auxiliary motor 202 starts again, controlling the top rod 21 to move and reduce the distance between the top block 32 and the hanging part 311, so that the pressure value of the pressure monitoring data stabilizes again within the first preset range.

[0080] Understandably, in practice, when the pressure value is lower than the second preset range, the wire and the clamp tend to loosen. By first starting the main motor 201 to increase the travel, the distance between the top block 32 and the wiring part can be adjusted in time, so that the pressure value falls into the second preset range, reducing the risk of relative displacement or excessive relative displacement between the wire and the clamp. When the pressure value falls into the second preset range, the main motor 201 is stopped and the auxiliary motor 202 is started. Through continuous micro-adjustment, the pressure gradually approaches the target clamping pressure, and finally, stable clamping and fixing of the wire is achieved without damage.

[0081] The first preset range falls entirely within the second preset range, and the span of the first preset range is smaller than the span of the second preset range.

[0082] It should be noted that if a pressure value of 500N is considered as a stable clamping force of the clamping mechanism 3 on the wire, then the threshold is set to 500N. The first preset range is 450N~550N, and the second preset range is 400N~600N. When the pressure value is below 400N, there is a risk that the wire and the clamping mechanism 3 will be relatively displaced.

[0083] This invention also provides a method for adjusting the clamping force of the clamping mechanism 3 based on the grounding rod structure described in the above embodiments:

[0084] Based on pressure sensor data (pressure value, fluctuation amplitude / frequency) and accompanying phenomena (conductor swaying state, clamp displacement), pressure fluctuations are divided into three levels to distinguish between "temporary pressure drop caused by dynamic wind vibration" and "persistent pressure loss caused by static loosening," thus avoiding blindly applying pressure and damaging the conductor. Details are shown in the table below:

[0085] Table 1. Adjustment of Clamping Force in Clamping Mechanism (Graded)

[0086]

[0087] The solution has three key features: ① The "soft-lock torque-increasing" characteristic of the auxiliary motor 202: The auxiliary motor 202 achieves "low speed, high torque" output through the reduction gear set 203, which is suitable for "micro-compensation" of dynamic wind vibration and avoids static pressure overload caused by "rapid tightening" like the main motor 201. ② Dynamic and static feature identification: The electrical control unit has a built-in frequency analysis algorithm that automatically identifies "dynamic wind vibration" by the correlation between the pressure fluctuation frequency and the conductor swing frequency; it identifies "static loosening" by the pressure drop slope and displacement sensor data, ensuring accurate grading. ③ Protection mechanism to avoid overpressure: When the auxiliary motor 202 compensates, a pressure upper limit is set (design threshold + 10%), and it will automatically stop if it exceeds this limit; when the main motor 201 tightens, a torque sensor closed-loop control is used (instead of simply relying on the pressure value) to ensure that the tightening torque does not exceed the allowable compressive torque of the conductor material (e.g., aluminum wire ≤ 15 N·m, steel-cored aluminum wire ≤ 20 N·m).

[0088] 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 grounding rod structure, characterized in that, include: Operating rod, electric mechanism, and clamping mechanism; The clamping mechanism includes a hook and a top block. One end of the hook is provided with a hooking part, and the other end is connected to the end of the operating rod. The top block is disposed opposite to the hooking part. The electric mechanism includes a top rod and a drive assembly. The top rod is movably disposed in the operating rod and is movable relative to the operating rod. One end of the top rod is connected to the top block, and the other end is connected to the drive assembly. A pressure monitor is provided at the position where the hook and / or the top block is in contact with the cable. The pressure monitor is connected to the drive assembly. The pressure monitor is used to monitor the pressure between the hook and / or the top block and the cable and send the pressure monitoring data to the drive assembly. The drive assembly is used to drive the top rod and the top block to move according to the pressure monitoring data, and adjust the distance between the hook and the top block to adjust the clamping force of the clamping mechanism on the cable.

2. The grounding rod structure according to claim 1, characterized in that, The end of the hook that is connected to the operating rod is provided with a sleeve, and the operating rod is nested in the sleeve and threadedly connected to the sleeve.

3. The grounding rod structure according to claim 1, characterized in that, The drive assembly includes a screw and a drive motor. One end of the screw is nested inside the top rod and threadedly connected to the inner wall of the top rod. The screw is located in the middle of the operating rod, and the other end of the screw is connected to the drive motor.

4. A grounding rod structure according to claim 3, characterized in that, The drive motor includes a main motor and an auxiliary motor. The output shaft of the main motor is connected to the screw, and the output shaft of the auxiliary motor is connected to the main motor through a reduction gear set.

5. A grounding rod structure according to claim 4, characterized in that, The reduction gear set includes a first gear, a second gear, a third gear, and a fourth gear. The second gear has a larger number of teeth and a larger diameter than the first gear. The first gear is connected to the output shaft of the auxiliary motor. The second gear is located on one side of the first gear and meshes with it. The third gear and the second gear are coaxially arranged and connected by a connecting shaft. The fourth gear is located between the first gear and the main motor. The third gear meshes with the fourth gear, and the fourth gear is fixedly connected to the main motor.

6. A grounding rod structure according to claim 1, characterized in that, The device includes an angle adjustment assembly. The operating rod includes a first segment and a second segment. The first end of the first segment is connected to the clamping mechanism. The electric mechanism is located in the middle of the first segment. The second end of the first segment is connected to the first end of the second segment through the angle adjustment assembly. The angle adjustment component is used to adjust the connection angle between the first segment and the second segment so that the shortest connection direction between the hook and the top block is perpendicular to the hook segment of the cable.

7. A grounding rod structure according to claim 6, characterized in that, The angle adjustment component includes a fastener, a first mating surface disposed at the second end of the first segment, and a second mating surface disposed at the second end of the second segment. The first and second mating surfaces are arranged opposite to each other. Both the first and second mating surfaces are provided with a plurality of annular and equally spaced protruding teeth. By adjusting the relative angle between the first and second mating surfaces, the protruding teeth of the two surfaces mesh at different positions, thereby realizing the angle adjustment of the first and second segments. The fastener is simultaneously connected through the first and second segments to achieve a fixed connection between the first and second mating surfaces.

8. A grounding rod structure according to claim 1, characterized in that, The handheld end of the control stick is equipped with a remote control device, which is mounted around the outside of the handheld end and is wirelessly connected to the drive assembly.

9. A control method based on the grounding rod structure according to any one of claims 1-8, characterized in that, include: When the pressure value of the pressure monitoring data is stable within the first preset range, the clamping force of the clamping mechanism on the cable is constant, the drive component is not activated, and the top rod and top block remain stationary. When the pressure value of the pressure monitoring data exceeds the first preset range, the clamping force of the clamping mechanism on the cable decreases, the driving component is activated, and the top rod is controlled to move to reduce the distance between the top block and the hanging part, so that the pressure value of the pressure monitoring data is stabilized within the first preset range.

10. A control method based on the grounding rod structure according to any one of claims 3-5, characterized in that, include: When the pressure value of the pressure monitoring data stabilizes within a first preset range, the clamping force of the clamping mechanism on the cable remains stable, the drive component does not start, and the top rod and top block remain stationary. When the pressure value of the pressure monitoring data stabilizes within the second preset range, the clamping force of the clamping mechanism on the cable decreases, the auxiliary motor in the drive assembly starts, the main motor does not start, and the control rod moves to reduce the distance between the top block and the hanging part, so that the pressure value of the pressure monitoring data stabilizes again within the first preset range. When the pressure value of the pressure monitoring data exceeds the second preset range, the clamping force of the clamping mechanism on the cable decreases, the main motor starts first, controls the top rod to move and reduce the distance between the top block and the hanging part, so that the pressure value of the pressure monitoring data stabilizes within the second preset range, the main motor stops, the auxiliary motor starts again, controls the top rod to move and reduce the distance between the top block and the hanging part, so that the pressure value of the pressure monitoring data stabilizes again within the first preset range; Wherein the first preset range falls completely within the second preset range, and the span of the first preset range is smaller than the span of the second preset range.

Images