Ground wire auxiliary device and operation method

Abstract

A kind of ground wire auxiliary device and operation method, including bottom base, detachable insulating rod and insulating rope, characterized in that, the top of the bottom base is equipped with first fixed pulley by support piece;The top of the insulating rod is provided with top kit, and the top kit includes wind fire wheel and insulating rod kit connector, and the wind fire wheel is the second fixed pulley with self-locking mechanism;The self-locking mechanism includes catch and gear baffle arranged on the second fixed pulley, and flinger arranged on the rotating shaft of second fixed pulley, and the flinger rotates synchronously with second fixed pulley;The insulating rope is sequentially wound through the first fixed pulley located in bottom base and the wind fire wheel of top kit, and ground wire hook is arranged on the insulating rope.The present application can save manpower and reduce the burden of operating personnel during operation.

Description

Technical Field

[0001] This invention relates to the field of electrical safety tool design and manufacturing technology, specifically to a grounding wire auxiliary device and its operation method. Background Technology

[0002] When performing switching operations, substation maintenance personnel often need to close the grounding switch or install a grounding wire on the de-energized side of the line to forcibly and reliably ground the equipment. This releases residual charge in capacitors and inductors after power outages and prevents accidental closing, playing a crucial role in ensuring the safety of personnel and equipment. During the grounding wire installation process, insulating rods are used to support the grounding wire. These insulating rods are assembled in sections, with different numbers of sections to accommodate varying safety distances for different voltage levels. Furthermore, because the weight of the grounding wire varies at different voltage levels, the insulating rods also have corresponding thicknesses to ensure the rod's strength and the required support force are met during the grounding process.

[0003] Traditional grounding methods require manual lifting of the insulating rod and ground wire. During this process, the angle between the insulating rod and the ground plane gradually increases to approximately 90°, requiring significant manual force. This is especially true at higher voltage levels, where the length of the insulating rod and the weight of the ground wire make it difficult to complete the operation by a single person. Furthermore, the process requires considerable force to control the suspended position of the ground wire, posing a significant risk of damaging nearby equipment (such as insulators) and the ground wire falling and injuring the operator. Existing grounding methods are not only time-consuming and labor-intensive but also impose a heavy workload and increased safety risks on substation maintenance personnel.

[0004] Chinese patent application CN 109119858 A discloses an auxiliary device for installing and removing grounding wires on an insulating rod. This device includes a detachable insulating operating rod, a metal head at the top of the rod, and grounding wire hanging devices spaced apart on the rod. It avoids contact between the operator and the grounding wire during installation and removal, and effectively secures the grounding wire. However, it fails to consider the force required to support the grounding wire and insulating rod by maintenance personnel during the grounding wire hanging process. The addition of the auxiliary device increases the physical strain on workers and does not alleviate the workload.

[0005] Chinese patent application CN 119209281 A discloses an automatic grounding device for substations. The device includes an insulated telescopic pole assembly, a mechanical vehicle, a first controller, and a second controller, allowing maintenance personnel to remotely control the removal and installation of grounding wires. However, the device has a complex structure and high cost, which is not conducive to large-scale promotion and application.

[0006] Therefore, there is an urgent need for a highly reliable and safe auxiliary mechanical device for grounding wire installation to reduce the difficulty and burden of grounding wire installation for maintenance personnel and ensure the safety of personnel and equipment. Summary of the Invention

[0007] To address the shortcomings of existing technologies, a grounding wire auxiliary device and operating method are provided to solve problems such as grounding wire falling and injuring people or insulation rods accidentally damaging equipment when maintenance personnel are performing switching operations by grounding the wire, thereby improving the stability of the operation.

[0008] A first aspect of the present invention provides a grounding wire auxiliary device, comprising a bottom base, a detachable insulating rod, and an insulating rope, characterized in that, The top of the bottom base is equipped with a first fixed pulley via a support member; The top of the insulating rod is provided with a top kit, which includes a windmill and an insulating rod kit connector. The windmill is a second fixed pulley with a self-locking mechanism. The self-locking mechanism includes a gripper and a gear baffle on the second fixed pulley, and a swing block on the rotating shaft of the second fixed pulley. The swing block rotates synchronously with the second fixed pulley. The insulating rope passes sequentially around the first fixed pulley located on the bottom base and the windmill of the top assembly, and a grounding hook is provided on the insulating rope.

[0009] Preferably, the top kit further includes a buckle disposed on the outer surface of the fire wheel for opening or closing the rope slot of the fire wheel.

[0010] Preferably, the bottom base is equipped with multiple casters, and the casters are equipped with a braking mechanism.

[0011] Preferably, the braking mechanism includes an unlocking pedal, a pulley brake pedal, and a brake block. The unlocking pedal and the pulley brake pedal are respectively hinged to the bottom base. The brake block is slidably connected to the bottom base and is drivenly connected to the pulley brake pedal. The unlocking pedal is drivenly connected to the pulley brake pedal.

[0012] Preferably, the grounding hook has an upwardly curved hook portion with the opening facing upwards, the inner side of the hook portion is provided with a limiting protrusion to prevent the grounding wire from falling horizontally, and the top of the hook portion is provided with an elastic opening.

[0013] Preferably, the top and bottom ends of the insulating rod are provided with internal threads, the insulating rod assembly connector is provided with external threads that mate with the internal threads at the top of the insulating rod, and the top of the bottom base is provided with external threads that mate with the internal threads at the bottom of the insulating rod.

[0014] Preferably, the insulating rod is composed of multiple insulating rod segments spliced ​​together, the length of which is adjustable, and the ends of adjacent insulating rod segments are respectively provided with mutually cooperating internal and external threads.

[0015] Preferably, the main support structure of the bottom base is a frame type.

[0016] A second aspect of the present invention provides a method for operating a grounding wire auxiliary device, comprising the following steps: Step 1: Screw the bottom end of the insulating rod to the top thread of the bottom base, and screw the top end of the insulating rod to the insulating rod assembly connector of the top kit. Step 2: Pass the free traction end of the insulating rope through the rope groove of the windmill from above, then go down and around the first fixed pulley of the bottom base, and use the ground wire hook to hang the ground wire to be installed; Step 3: Pull the free traction end of the insulating rope to raise the ground wire vertically to the target line height and hang the ground wire on the line; Step 4: Loosen the insulating rope to open the elastic opening of the ground wire hook, and the ground wire will come out from the top opening, completing the suspension of the single-phase ground wire.

[0017] Preferably, when the downward speed of the insulating rope is greater than a preset threshold, the rotational speed of the swing block increases and it impacts the gear baffle, driving the gripping teeth to clamp the insulating rope, thereby achieving automatic locking of the insulating rope.

[0018] The beneficial effect of this invention is that, compared with the prior art, this invention adopts a self-locking structure with a windmill. When the insulating rope falls off quickly, the increased rotation speed of the swing block impacts the gear baffle, driving the gripping teeth to clamp the insulating rope, thereby achieving automatic locking of the insulating rope and preventing the ground wire from slipping off quickly and falling and injuring people.

[0019] The insulating rope is equipped with a ground wire hook. The lower part provides support for the ground wire. The limiting protrusion in the middle of the ground wire hook prevents the ground wire from falling off horizontally. The top of the ground wire hook is designed with an elastic opening. When unloading the ground wire, the ground wire can be smoothly released by pulling the insulating rope without manual intervention.

[0020] All components of the device of this invention are mechanical structures and do not contain complex power transmission devices. The top kit is made of one-piece molded stainless steel components, the bottom base is made of frame-type stainless steel structure, and the insulating rod and insulating rope are made of fiberglass and silk insulation materials respectively. Its cost is relatively low, the maintenance cost is low, and it has high reliability and economy. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the bottom base structure of the grounding wire auxiliary device of the present invention; Figure 2 This is a schematic diagram of the top component structure of the grounding wire auxiliary device of the present invention; Figure 3 This is a schematic diagram of the bottom pulley brake structure of the grounding wire auxiliary device of the present invention; Figure 4This is a schematic diagram of the self-locking mechanism of the top windmill of the grounding wire auxiliary device of the present invention; Figure 5 This is a schematic diagram of the assembly structure of the grounding wire auxiliary device of the present invention.

[0022] In the diagram: 1. Bottom base; 2. Caster wheel; 3. Braking mechanism; 4. Fixed pulley; 5. Support component; 6. Insulating rod assembly connector; 7. Windmill wheel; 8. Grounding hook; 9. Insulating rope; 10. Insulating rod; 11. Unlocking pedal; 12. Brake pedal; 13. Brake block; 14. Buckle; 15. Grip teeth; 16. Gear baffle; 17. Thrusting block. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this invention. The embodiments described in this application are merely some embodiments of this invention, and not all embodiments. Based on the spirit of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this invention.

[0024] Reference Figures 1 to 5 Embodiment 1 of the present invention provides a ground-mounting auxiliary device, including a bottom base 1, a detachable insulating rod 10 and an insulating rope 9.

[0025] The supporting structure of the bottom base 1 is a frame type, made of stainless steel through 3D printing. The top of the bottom base 1 is equipped with a first fixed pulley 4 via a support member 5, and also has an insulating rod kit connector 6, which has an external thread that mates with the insulating rod 10.

[0026] Two sets of casters 2 are installed at the bottom of the base 1. Each caster 2 has a braking mechanism 3, which includes an unlocking pedal 11, a pulley brake pedal 12, and a brake block 13. The unlocking pedal 11 and the pulley brake pedal 12 are hinged to the base 1. The brake block 13 is slidably connected to the base 1 and is drivenly connected to the pulley brake pedal 12. When maintenance personnel depress the pulley brake pedal 12, it presses against the caster 2. The unlocking pedal 11 is drivenly connected to the pulley brake pedal 12; when maintenance personnel depress the unlocking pedal 11, it releases the brake block 13 from pressing against the caster 12.

[0027] The insulating rod 10 is made of fiberglass. In the application of side-mounted grounding wires on 220kV voltage level lines, the insulating rod 10 is spliced. The splicing method of the insulating rod 10 is the same as that of existing technology, consisting of four sections of insulating rod 10, each approximately 140 cm long. The internal thread at the top of each section of insulating rod 10 engages with the external thread of the corresponding spliced ​​section. The spliced ​​insulating rod 10 has internal threads at both the top and bottom. The internal thread at the bottom of the insulating rod 10 mates with the external thread on the insulating rod assembly connector 6, screwing the insulating rod 10 onto the insulating rod assembly connector 6.

[0028] The top of the insulating rod 10 is connected to a top kit, which includes a windmill 7 and an insulating rod kit connector 6. The insulating rod 10 is connected to the external thread on the insulating rod kit connector 6 via an internal thread on its top. The top kit is integrally molded, and the windmill 7 is a second fixed pulley with a mechanical self-locking mechanism, made of stainless steel.

[0029] The self-locking mechanism includes a gripping tooth 15 and a gear baffle 16 mounted on the second fixed pulley, and a swing block 17 mounted on the rotating shaft of the second fixed pulley, the swing block 17 rotating synchronously with the second fixed pulley.

[0030] The top kit also includes a clip 14, which is set on the surface of the Windwheel 7 housing for opening or closing the rope slot of the Windwheel.

[0031] The insulating rope 9 is made of mulberry silk insulation material. One end is a free traction end, and the other end is fixedly connected to the ground wire hook 8 after passing through the first fixed pulley 4 located on the bottom base and the windmill of the top kit. The ground wire hook has an upwardly curved hook part with the opening facing upward. The inner side of the hook part is provided with a limiting protrusion to prevent the ground wire from falling horizontally, and the top of the hook part is provided with an elastic opening.

[0032] During operation, the ground wire is hooked with the ground wire hook 8, and the ground wire is pulled to the line by pulling the insulating rope 9. When the ground wire is suspended on the side of the line, the ground wire hook 8 is slowly released to detach from the ground wire, thus completing the single-phase ground wire suspension. Repeating the operation can complete the suspension of all three-phase ground wires. If the insulating rope 9 accidentally slips out of the hand during operation and the downward speed exceeds the preset speed threshold, the swing block 17 of the windmill 7 will rotate at an increased speed, hitting the gear baffle 16, causing the gripping teeth 15 to grab the insulating rope. The friction prevents the ground wire from slipping quickly, avoiding injury. If the maintenance personnel slowly release the insulating rope, the speed of the swing block 17 will not be enough to hit the gear baffle 16, and the self-locking mechanism will not be triggered. Throughout the operation, the maintenance personnel only need to provide the weight supporting the ground wire, and the position of the insulating rod can be easily adjusted by the universal wheels 2 on the bottom base 1. The operation is simple, economical, reliable, and safe. The lower half of the grounding hook 8 provides support for the grounding wire. The limiting protrusion in the middle of the grounding hook prevents the grounding wire from falling horizontally. The elastic opening at the top of the grounding hook allows the grounding wire to be smoothly removed by pulling the insulating rope during unloading, without manual intervention. By replacing the insulating rod 10 with one of different voltage ratings, the device can be adapted to other voltage levels, making it widely applicable.

[0033] Embodiment 2 of the present invention provides a method for operating a grounding wire auxiliary device, specifically including the following steps: Step 1: Thread the bottom end of the insulating rod 10 to the top of the bottom base 1, and thread the top end of the insulating rod 10 to the insulating rod assembly connector 6 of the top assembly. Step 2: Pass the free traction end of the insulating rope 9 through the rope groove of the windmill 7 from above, then go down and around the first fixed pulley 4 of the bottom base 1, and use the ground wire hook 8 to hang the ground wire to be installed. Step 3: Pull the free traction end of the insulating rope 9 to raise the ground wire vertically to the target line height and hang the ground wire on the line; Step 4: Loosen the insulating rope 9 to open the elastic opening of the ground wire hook 8, and the ground wire comes out from the top opening to complete the suspension of the single-phase ground wire.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the protection scope of the claims of the present invention.

Claims

1. A grounding wire auxiliary device, comprising a bottom base (1), a detachable insulating rod (10), and an insulating rope (9), characterized in that, The top of the bottom base (1) is equipped with a first fixed pulley (4) via a support member (5); The top of the insulating rod (10) is provided with a top kit, which includes a windmill (7) and an insulating rod kit connector (6). The windmill (7) is a second fixed pulley with a self-locking mechanism. The self-locking mechanism includes a gripper (15) and a gear baffle (16) provided on the second fixed pulley, and a swing block (17) provided on the rotating shaft of the second fixed pulley. The swing block (17) rotates synchronously with the second fixed pulley. The insulating rope (9) passes in sequence around the first fixed pulley (4) located on the bottom base (1) and the windmill (7) of the top kit, and a grounding hook (8) is provided on the insulating rope (9).

2. The grounding wire auxiliary device according to claim 1, characterized in that, The top kit also includes a buckle (14) disposed on the outer surface of the fire wheel (7) for opening or closing the rope slot of the fire wheel (7).

3. The grounding wire auxiliary device according to claim 1, characterized in that, The bottom base (1) is equipped with multiple casters (2), and the casters (2) are equipped with a braking mechanism (3).

4. The grounding wire auxiliary device according to claim 1, characterized in that, The braking mechanism (3) includes an unlocking pedal (11), a pulley brake pedal (12), and a brake block (13). The unlocking pedal (11) and the pulley brake pedal (12) are respectively hinged to the bottom base (1). The brake block (13) is slidably connected to the bottom base (1) and is drivenly connected to the pulley brake pedal (12). The unlocking pedal (11) is drivenly connected to the pulley brake pedal (12).

5. The grounding wire auxiliary device according to claim 1, characterized in that, The ground wire hook (8) has an upwardly curved hook with the opening facing upward. The inner side of the hook is provided with a limiting protrusion to prevent the ground wire from falling off horizontally, and the top of the hook is provided with an elastic opening.

6. The grounding wire auxiliary device according to claim 1, characterized in that, The top and bottom ends of the insulating rod (10) are provided with internal threads. The insulating rod assembly connector (6) is provided with external threads that mate with the internal threads at the top of the insulating rod (10). The top of the bottom base (1) is provided with external threads that mate with the internal threads at the bottom of the insulating rod (10).

7. The grounding wire auxiliary device according to claim 1, characterized in that, The insulating rod (10) is composed of multiple insulating rod segments spliced ​​together, and its length is adjustable. The ends of adjacent insulating rod segments are respectively provided with mutually cooperating internal threads and external threads.

8. The grounding wire auxiliary device according to claim 1, characterized in that, The main support structure of the bottom base (1) is a frame type.

9. A method for operating a grounding wire auxiliary device according to any one of claims 1 to 8, characterized in that, Includes the following steps: Step 1: Thread the bottom end of the insulating rod (10) to the top of the bottom base (1) and thread the top end of the insulating rod (10) to the insulating rod assembly connector (6) of the top assembly. Step 2: Pass the free traction end of the insulating rope (9) through the rope groove of the windmill (7) from above, and then go down around the first fixed pulley (4) of the bottom base (1), and use the ground wire hook (8) to hang the ground wire to be installed; Step 3: Pull the free traction end of the insulating rope (9) to raise the ground wire vertically to the target line height and hang the ground wire on the line; Step 4: Loosen the insulating rope (9) to open the elastic opening of the ground wire hook (8) and the ground wire comes out from the top opening to complete the suspension of the single-phase ground wire.

10. The method for operating the grounding wire auxiliary device according to claim 9, characterized in that, When the sliding speed of the insulating rope (9) is greater than the preset threshold, the rotation speed of the swing block (17) increases and it hits the gear baffle (16), driving the gripper (15) to clamp the insulating rope (9) and realize the automatic locking of the insulating rope (9).

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