CN104201489A - Novel anti-falling-off grounding wire clamp device for electric power circuit - Google Patents

Abstract

The invention discloses a novel power line anti-falling grounding wire clamp device, which includes metal wire clamps connected in sequence, a main insulating operating lever and a booster handle; the main insulating operating lever includes a hollow insulating sleeve and a self-locking rotating rod, and the hollow The insulating sleeve is rotatably set on the self-locking rotating rod, and the two ends of the self-locking rotating rod extend outward respectively to an upper extension part and a lower extension part, and two limiting holes are provided on the side wall of the upper extension part , there is a retractable block in the limit hole; there are two card holes on the inner wall of the lower extension; the metal wire clamp includes a U-shaped hook, and one end of the U-shaped hook is hinged to the connecting rod, and the connecting rod is provided with a screw thread Holes and threaded holes are connected to the screw, the upper end of the screw is fixed with a pressure block, the lower end of the screw is fixed to the top of the self-locking rotating rod; the power-assisted handle includes a hand-operated insulating handle, and the connecting part of the hand-operated insulating handle and the main insulating operating rod The self-locking kit is adopted, which has the same structure as the upper extension at the top of the self-locking turning rod.

Description

A new type of anti-dropping grounding wire clamp device for power lines

technical field

The invention relates to the technical field of power system maintenance equipment, in particular to a novel power line anti-dropping ground wire clamp device.

Background technique

When the power system undergoes power outage maintenance, in order to ensure the safety of the maintenance personnel, it is necessary to install ground wires on both sides of the maintenance equipment to prevent electric shock accidents caused by sudden power calls. At present, the grounding wires commonly used in power systems can be divided into line grounding wires and busbar grounding wires according to different usage occasions. The lack of effective anti-falling measures makes the grounding wire prone to accidental falling off. In recent years, there have been many personal injury accidents caused by the accidental falling off of the grounding wire in China. In order to solve the problem of ground wire falling off, component manufacturers have introduced bolt-type wire clamps, which rely on the rotation of the insulated handle to clamp or loosen the wires. Although this type of wire clamp avoids the aging problem of spring-type wire clamps, it brings new problems. , because the wire can only be clamped by constantly rotating the insulating handle, dismounting is time-consuming and laborious, and there is no power-assisted mechanism, so that people with weak strength may not be able to clamp the wire, and the problem of the ground wire falling off has not been fundamentally solved.

Contents of the invention

The purpose of the present invention is to provide a new type of anti-dropping grounding wire clamp device for power lines, which can meet the use requirements of different voltage levels, and can fundamentally avoid the problem of accidental falling off of the grounding wire, and prevent the grounding wire from being damaged during the maintenance process of the power system. Falling off caused casualties.

The technical scheme adopted in the present invention is:

A new type of anti-falling grounding wire clamp device for power lines, including metal wire clamps connected in sequence, a main insulating operating lever and a booster handle; the main insulating operating lever includes a hollow insulating sleeve and a self-locking rotating rod, and the hollow insulating Both the sleeve and the self-locking rotating rod have a hollow cylindrical structure, and the hollow insulating sleeve is rotatably sleeved on the self-locking rotating rod, and the two ends of the self-locking rotating rod extend outward respectively to an upper extension and a lower extension. The side wall of the upper extension at the top of the self-locking rotating rod is oppositely provided with two limit holes, the telescopic block is arranged in the limit hole, and the front end of the block extends out of the limit hole; the self-locking rotating rod The inner side wall of the lower extension of the lower end of the lower end is relatively provided with two clamping holes; the metal wire clamp includes a U-shaped hook, and one end of the U-shaped hook is hinged to a connecting rod through a bolt, and the connecting rod is provided with a threaded hole. The threaded hole is connected with a screw rod, the upper end of the screw rod is fixed with a pressure block, the lower end of the screw rod is fixed with the top end of the self-locking rotating rod; The self-locking kit is connected to the bottom end of the main insulating operating rod. The structure of the self-locking kit is the same as that of the upper extension at the top of the self-locking rotating rod, and the self-locking kit is matched with the lower extension of the self-locking rotating rod. The block of the lock kit is embedded in the card hole of the lower extension of the self-locking rotating rod of the main insulating operating rod.

The hollow insulating sleeve is rotatably set on the self-locking rotating rod and connected by bearings.

Also included is an auxiliary insulating operating rod detachably connected to the lower end of the main insulating operating rod.

The difference between the auxiliary insulating operating rod and the main insulating operating rod is that: the hollow insulating sleeve of the auxiliary insulating operating rod is provided with a two-way ratchet group, and the hollow insulating sleeve of the auxiliary insulating operating rod is provided with a button hole , the two-way ratchet conversion button is set in the button hole.

The upper surface of the pressing block is concave downward in an arc shape.

The upper extension of the self-locking rotating rod adopts a hexagonal prism structure; the lower extension of the self-locking rotating rod adopts a hexagonal prism structure, and the top hexagonal prism structure of the self-locking rotating rod of the auxiliary insulating operating rod matches the plug It is arranged in the hexagonal prism structure at the lower end of the self-locking rotating rod of the main insulating operating rod.

In order to meet the use requirements of different voltage levels, the present invention adopts segmented insulating operating rods, and the insulating operating rods are connected by self-locking rotating rods. When in use, the self-locking rotating rods can be installed or pulled out only by forcefully inserting or pulling them out. It is easy to use, simple and quick to operate by removing the two sections of insulating operating rods; the hollow insulating sleeve and the bearing rotating connection structure of the self-locking rotating rod, together with the power-assisted handle, can perform labor-saving rotating operation on the main insulating operating rod , so that the U-shaped hook of the metal wire clamp and the closed arc clamp combined with the pressing block tighten the wire, fundamentally avoid the accidental drop of the ground wire, and prevent casualties caused by the fall of the ground wire during the maintenance process of the power system.

Description of drawings

Fig. 1 is a schematic front view of the structure of the metal wire clamp and the main insulating operating rod of the present invention;

Fig. 2 is a schematic front view of the structure of the main insulating operating rod and the booster handle of the present invention;

Fig. 3 is a structural schematic diagram of the auxiliary insulating operating rod of the present invention;

Fig. 4 is a structural schematic diagram of the bidirectional ratchet of the present invention.

Detailed ways

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the present invention includes a metal wire clamp, a main insulating operating lever and a booster handle connected in sequence; the main insulating operating lever includes a hollow insulating sleeve 1 and a self-locking type The rotating rod 2, the hollow insulating sleeve 1 and the self-locking rotating rod 2 are all in a hollow columnar structure, the hollow insulating sleeve 1 is set on the self-locking rotating rod 2 through bearing rotation, and the two ends of the self-locking rotating rod 2 An upper extension part and a lower extension part respectively extend outward. The upper extension of the self-locking rotating rod 2 upper end adopts a hexagonal prism structure, and the two opposite side walls of the upper extension of the self-locking rotating rod 2 top are respectively provided with a limit hole, and the telescopic clamping block 3 is located at the limit In the hole, and the front end of the block 3 extends out of the limit hole; the lower extension of the lower end of the self-locking rotating rod 2 adopts a hexagonal prism structure, and the two opposite inner walls of the lower extension of the lower end of the self-locking rotating rod 2 Each is provided with a card hole 5 . Described metal wire clamp comprises U-shaped hook 6, and one end of U-shaped hook 6 is hinged a connecting rod 8 by bolt 7, and connecting rod 8 is provided with threaded hole 9, and threaded hole 9 internal thread is connected with screw rod 11, and screw rod 11 A briquetting block 10 is fixed on the upper end of the briquetting block 10, and the upper surface of the briquetting block 10 is downwardly arc-shaped, and the lower end of the screw rod 11 is fixed to the top of the self-locking rotating rod 2; the power-assisted handle includes a hand-operated insulating handle 12, The hand-operated insulated handle 12 is connected with the main insulating operating rod through a self-locking sleeve 21. The structure of the self-locking sleeve 21 is the same as the structure of the upper extension at the top of the self-locking rotating rod 2, and the self-locking sleeve 21 is the same as the self-locking type. The lower extension of the rotating rod 2 is mated and inserted, and the block 3 of the self-locking kit 21 is embedded in the clamping hole 5 of the lower extension of the self-locking rotating rod 2 of the main insulating operating rod.

In order to meet the use requirements of different voltage levels, the present invention also includes an auxiliary insulating operating rod, which is detachably connected to the lower end of the main insulating operating rod. The difference between the auxiliary insulating operating rod and the main insulating operating rod is that the auxiliary insulating operating rod The hollow insulating sleeve 13 inside is provided with a two-way ratchet group 19, and a button hole 17 is provided on the hollow insulating sleeve 13 of the auxiliary insulating operating rod. The two-way ratchet conversion button 18 is arranged in the button hole 17, and the auxiliary insulating operating rod The block 15 on the top hexagonal prism structure of the self-locking rotating rod 14 matches in the clamping hole 5 of the hexagonal prism structure at the lower end of the main insulating operating rod self-locking rotating rod 2; The locking block of the locking set 21 is locked in the locking hole 16 at the lower end of the self-locking rotating lever 14 of the auxiliary insulating operating rod.

After the U-shaped hook 6 of the metal wire clamp of the present invention is combined with the pressing block 10, it presents a closed arc-shaped jaw for clamping the wire, and the arc-shaped jaw makes the wire and the metal wire clamp more tightly bonded. During the actual operation, the staff holds the hollow insulating sleeve 1 and keeps it still, and the other hand holds the power-assisted handle installed at the end of the hollow insulating sleeve 1 to rotate. The direction of rotation is set according to the direction of the thread, and the metal The jaw of the cable clamp is opened, and during the rotation process, since the hollow insulating sleeve 1 and the self-locking rotating rod 2 are connected by a bearing 20 provided at the upper and lower ends, the user's force is greatly reduced force, and make the self-locking rotating rod 2 drive the screw 11 and the pressure block 10 on the top of the screw to move downward together. At this time, the jaw of the metal wire clamp can be opened. set up. After hanging, the same operation method can be used to rotate in the opposite direction, so that the screw 11 and the pressing block 10 on the top of the screw move upward together, and the wire is fixed inside the arc-shaped jaw.

In order to meet the use requirements of different voltage levels, the present invention uses segmented insulating operating rods, including not only a main insulating operating rod, but also an auxiliary insulating operating rod, which can be used in a single segment or in two segments according to the different heights used on site. Insulated operating rod, at the same time, in order to make the connection and removal more convenient, we adopt the structure of the self-locking rotating rod. When using it, you only need to insert or pull out the self-locking rotating rod of the segmented insulating operating rod to install or remove it. Two-section insulated operating rod. Taking the main insulating operating rod as an example, since the self-locking mechanism is designed in the self-locking rotating rod 2 (the self-locking mechanism is the structure of the locking block and the locking hole 5), the segmented insulating operating rod is very firmly connected. The upper extension of the upper end of the self-locking rotating rod 2 adopts a hexagonal prism structure, the lower extension of the self-locking rotating rod 2 adopts a hexagonal prism structure, and the upper end of the self-locking rotating rod 2 has a hexagonal prism structure. A limit hole is respectively arranged on the two opposite side walls of the spacer, and a retractable block 3 is arranged in the limit hole. The retractable block 3 mainly utilizes a spring 4, and a retractable block is respectively arranged at both ends of the spring 4. Block 3 is like the opening device of the umbrella we usually use; the lower extension of the lower end of the self-locking rotating rod 2 adopts a hexagonal prism structure, and two opposite inner walls of the lower extension of the hexagonal prism structure are respectively provided with a card hole 5. On the one hand, the hexagonal prism structure is convenient for pulling and inserting, and on the other hand, it is mainly used for better rotation when the hand-cranked insulating handle 12 is used for rotation. When connecting or disassembling, the upper extension of the auxiliary insulating operating rod self-locking rotating rod 14 is inserted into the lower extension of the lower end of the main insulating operating rod. When plugging, the auxiliary insulating operating rod is self-locking The two blocks 15 on the upper extension of the upper end of the rotating rod 14 will automatically expand and contract inward under the state of being stressed. When inserted to a certain extent, the blocks 15 will meet the card holes at the lower end of the main insulating operating rod. At 5 o'clock, it will automatically pop up and be stuck in the clamping hole 5 to complete the self-locking function; similarly, when the booster handle is connected to the lower end of the main insulating operating rod or the auxiliary insulating operating rod, the same connection method is adopted. When it is necessary to use the auxiliary insulating operating rod, the structure of the two-way ratchet group 19 can also be used. The structure of the two-way ratchet group 19 can switch the direction of rotation by switching the mode of the two-way ratchet conversion button 18, so that the insulating rod can only rotate in one direction , On the one hand, it can be used when tightening the wire, once the wire is clamped, it will not loosen, which fundamentally avoids the problem of accidental falling off of the ground wire; on the other hand, when it needs to be removed from the wire, switch to the opposite direction, which makes it easier for the staff to quickly disassemble. The structure of the two-way ratchet group 19 belongs to the existing mature technology, and how it is utilized in the present invention will not be described in detail here. At the same time, the present invention also uses a booster handle to increase the torque on the insulating operating rod through the principle of leverage, so that when the staff applies a smaller force, the clamping force of the grounding wire clamp on the wire can be greatly increased, thereby saving manpower.

Claims (6)

1. A new type of power line anti-dropping grounding wire clamp device, characterized in that: it includes metal wire clamps connected in sequence, a main insulating operating lever and a booster handle; the main insulating operating lever includes a hollow insulating sleeve and a self-locking The hollow insulating sleeve and the self-locking rotating rod are both hollow cylindrical structures. The hollow insulating sleeve is rotatably set on the self-locking rotating rod, and the two ends of the self-locking rotating rod extend outward respectively. and the lower extension part, two limit holes are arranged on the side wall of the upper extension part at the top of the self-locking rotating rod, and the retractable block is arranged in the limit hole, and the front end of the block extends out of the limit hole The inner wall of the lower extension of the lower end of the self-locking rotating rod is relatively provided with two card holes; the metal wire clamp includes a U-shaped hook, and one end of the U-shaped hook is hinged to a connecting rod by a bolt, and the connecting rod There is a threaded hole on the top, the threaded hole is connected with a screw, the upper end of the screw is fixed with a pressing block, the lower end of the screw is fixed with the top of the self-locking rotating rod; The type insulating handle is connected with the bottom end of the main insulating operating rod through the self-locking kit, the structure of the self-locking kit is the same as the upper extension part structure at the top of the self-locking turning rod, and the self-locking kit and the self-locking turning rod extend downwards The parts are mated and inserted, and the block of the self-locking kit is inserted into the card hole of the lower extension of the self-locking rotating rod of the main insulating operating rod. 2. The novel power line anti-falling ground wire clamp device according to claim 1, characterized in that: the hollow insulating sleeve is rotatably set on the self-locking rotating rod and connected by bearings. 3. The novel power line anti-dropping grounding wire clamp device according to claim 2, characterized in that it also includes an auxiliary insulating operating rod, which is detachably connected to the lower end of the main insulating operating rod. 4. The novel power line anti-falling grounding wire clamp device according to claim 3, characterized in that: the difference between the auxiliary insulating operating rod and the main insulating operating rod lies in: the hollow insulating sleeve of the auxiliary insulating operating rod A two-way ratchet group is arranged inside the barrel, and a button hole is arranged on the hollow insulating sleeve of the auxiliary insulating operating rod, and the two-way ratchet conversion button is arranged in the button hole. 5. The novel power line anti-dropping ground wire clamp device according to claim 4, characterized in that: the upper surface of the pressing block is downwardly curved and concave. 6. The novel power line anti-falling grounding wire clamp device according to claim 5, characterized in that: the upper extension of the self-locking rotating rod adopts a hexagonal prism structure; the lower end of the self-locking rotating rod The extension adopts a hexagonal prism structure, and the top hexagonal prism structure of the self-locking rotating rod of the auxiliary insulation operating rod is matched and inserted into the hexagonal prism structure at the lower end of the self-locking rotating rod of the main insulating operating rod.