CN203895631U - Grounding wire assembling and disassembling special-purpose device - Google Patents

Abstract

The utility model relates to a special device for installing and disassembling grounding wires, which belongs to the field of power transmission, transformation and distribution equipment, and comprises a grounding wire hook (1) and a matching insulating operating rod (16). The grounding wire hook (1) is ∩ Type, ∩-type grounding wire hook (1) is equipped with a pressing mechanism (2) inside, and the upper and lower parts of the ∩-type grounding wire hook (1) are axially symmetrically provided with semi-circular high-strength steel sheets (3), ∩-type grounding wire The bottom of one end of the wire hook (1) is provided with a nut and an annealed copper wire crimping interface (4), and the insulating operating rod (16) includes a connected upper rod head (11) and a lower rod head (14), and the upper rod head Two semicircular hooks (12) compatible with the grounding wire hook (1) are arranged at the joint between (11) and the lower rod head (14). The utility model eliminates the occurrence of vicious electrical misoperation accidents caused by the unexpected call of the equipment during the operation process, and ensures the safety of the operator's personal and power grid equipment.

Description

Special device for installing and disassembling the grounding wire

technical field

The utility model relates to a special device for installing and disassembling ground wires, which belongs to the field of power transmission, transformation and power distribution equipment.

Background technique

Hanging and removing the temporary grounding wire is an important safety technical measure to ensure the personal safety of the operators in the switching operation of the substation. At present, the commonly used device is the temporary grounding wire clip, including the ground wire crimping hook and the operating lever. Use it to hang and remove the ground wire.

In actual operation, due to the different lengths of the wires and the influence of their own gravity, the wires where the ground wire is installed cannot be at a horizontal angle, which makes it difficult to install with the existing operating lever, that is, the angle-adjustable operation It is also difficult to ensure that the angle is adjusted correctly once; secondly, the claws on the upper part of the existing operating rod have a small diameter, and it is not suitable for alignment when connecting the ground wire crimping joint with the operating rod on the ground. Safety responsibilities of guardians during the switching operation of the Electrical Safety Work Regulations; Thirdly, after the hook of the outdoor ground wire is hooked up, affected by the wind force and the swing of the wire, the angle of the lower joint of the hook will inevitably shift. The claws on the upper part of the operating rod are not suitable for alignment, which brings trouble to the operator to remove the ground wire; finally, the metal connecting rod with a rack is used as the transmission mechanism inside the operating rod, which is heavy and inconvenient to operate; The metal handle of the existing operating rod is connected to the upper claw through the rack at the lower part of the metal connecting rod inside the rod. The internal transmission mechanism itself is equivalent to a conductor. When the metal connecting rod is driven by pressing the handle to operate, the safety distance is insufficient. Although wearing insulating gloves during the operation, after the electrical inspection of the electroscope, because the time span of installing the ground wire is too long, even the most skilled operator needs 9-10 minutes, and it is impossible to reliably avoid the " The occurrence of vicious electrical misoperation accidents, such as live connection to the ground wire, constitutes a potential threat to the personal safety of operators and the safety of power grid equipment.

Utility model content

According to the deficiencies in the prior art above, the problem to be solved by the utility model is: to provide a special device for installing and disassembling the grounding wire which is light in weight, good in safety performance, simple in operation, strong in practicability, and improves working efficiency.

The technical scheme that the utility model solves its technical problem adopts is:

The special device for installing and disassembling the grounding wire includes a grounding wire hook and a matching insulating operating rod. The grounding wire hook is ∩-shaped, and a pressing mechanism is arranged inside the ∩-shaped grounding wire hook. The upper part of one side of the ∩-shaped grounding wire hook The semicircular high-strength steel sheet is arranged symmetrically with the lower part, and the bottom of one end of the ∩-shaped grounding wire hook is provided with a nut and an annealed copper wire. Two semicircular hooks adapted to the grounding wire hook are arranged at the junction of the head and the lower rod head.

The grounding wire hook of the special device for installing and disassembling the grounding wire is a ∩-shaped structure, which is convenient for loading and unloading, and can be easily assembled and disassembled through the semicircular high-strength steel sheet and the semicircular hook of the grounding wire hook and the insulating operating rod. It can be operated easily and quickly by humans, which can significantly improve the work efficiency of operators and ensure the safety of personnel and equipment. The device is made of aluminum alloy, with light weight, good safety performance, simple operation and strong practicability.

Further preferably, the pressing mechanism includes two arc-shaped crimping pieces with the same structure and arranged axially symmetrically. The upper two ends of the ∩-shaped ground wire hook are symmetrically provided with upper movable grooves of the crimping pieces, and parallel springs are arranged below the upper movable grooves of the crimping pieces. Fixed port, the lower connection groove of the crimping piece is set under the parallel spring fixed port, the upper part of the arc-shaped crimping piece is placed in the upper movable groove of the crimping piece, the lower part is fixed in the lower connecting groove of the crimping piece through the rotating shaft, and the middle part is connected to the spring. One end, the other end of the spring is installed in the parallel spring fixing port, and the two arc-shaped crimping pieces installed inside the ∩-shaped grounding wire hook are in the shape of a figure-eight, and the upper part forms a wire fixing round hole. When the ∩-type grounding wire hook is hung on the wire, the wire squeezes the arc-shaped crimping pieces on both sides of the compression mechanism, and the upper part of the arc-shaped crimping piece moves to both sides in the upper movable groove of the crimping piece on the upper part of the grounding wire hook , Squeeze the wire into the wire fixing round hole at the upper end, and then the springs on both sides reset the two arc-shaped crimping pieces, and hang the grounding wire hook on the wire, which is convenient to use and saves time and effort.

Further preferably, the bottom of the upper rod head is provided with two hook installation grooves, the semicircular hook is installed in the hook installation grooves, the lower part of the upper rod head is inserted into the lower rod head, and fixed by screws. The semicircular hook is snapped into the hook installation groove, fixed inside by the lower rod head, and fastened by screws at the same time, which is convenient for replacing the steel sheet of the semicircular hook.

Further preferably, an electroscope connection port is provided at the upper end of the upper rod head, and a cardan shaft connection port is provided at the lower end of the lower rod head. After the power test, you can directly carry out the installation operation of the ground wire hook, which greatly shortens the interval time before using the operating rod to hang the ground wire head after the electroscope electric test, which ensures the safety of people and equipment, and effectively solves the problem of misuse. Accidents happen. The cardan shaft can make the insulated operating rod rotate in all directions.

Further preferably, the semicircular hooks are respectively arranged at both ends of the upper rod head, and one of the two semicircular hooks opens upwards and the other opens downwards. Easy to assemble and disassemble, flexible and convenient to use.

The beneficial effects that the utility model has are:

1. It is easy to use. The installation groove on the right side of the hook is equipped with a semicircular high-strength steel sheet. Through the semicircular hooks on both sides of the special rod head, the alignment and hooking operations of the ground wire hook can be easily performed.

2. The head of the operating rod is connected with the lower insulating rod body through the Vientiane shaft, and the angle can be set and adjusted freely; the inner wall of the hook is equipped with a parallel spring clamping mechanism, and the crimping piece can be automatically adjusted according to the size of the wire, which is suitable for All 35 (10) kV, 110 (220) kV size conductors.

3. Through the electroscope on the upper part of the special insulated operating rod, you can directly carry out the installation operation of the ground wire hook after the power test, and the interval time between using the operating rod to hang the ground wire head after the electroscope test in the past is extremely large shortening, ensuring the safety of personal and equipment, and effectively solving the misoperation accidents.

4. The insulated operating rod of this device is light in weight and has good safety performance. It can be easily and quickly operated by a single person, which overcomes the heavy rod body itself caused by the use of a whole-body metal rack and connecting rod as the transmission mechanism inside the existing operating rod, and laborious operation. Condition.

5. Except for the metal structure of the rod head, the special-purpose operating rod is all insulating parts at the lower part, which solves the problem that the entire transmission mechanism inside the existing operating rod is a metal conductor, and the safety distance caused by pressing the metal handle is insufficient. question.

Description of drawings

Fig. 1 is the structural representation of ground wire hook of the present utility model;

Fig. 2 is a sectional view of the ground wire hook of the present utility model;

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

Among them, 1. Ground wire hook; 2. Compression mechanism; 3. Semicircular high-strength steel sheet; 4. Nut and annealed copper wire crimping interface; 5. Crimping piece upper movable groove; 6. Parallel spring fixing port; 7. The lower connecting groove of the crimping piece; 8. The arc-shaped crimping piece; 9. The spring; 10. The connection port of the electroscope; 11. The upper rod head; 12. The semicircular hook; 13. The hook installation groove; 14. The lower part Rod head; 15, cardan shaft connection port; 16, insulating operating rod; 17, wire fixing round hole.

Detailed ways

Embodiments of the utility model are further described below in conjunction with the accompanying drawings:

As shown in Figure 1, Figure 2, and Figure 3, the special device for installing and disassembling the grounding wire described in the utility model includes a grounding wire hook 1 and a matching insulating operating rod 16, and the grounding wire hook 1 is ∩ type, ∩ type The grounding wire hook 1 is equipped with a pressing mechanism 2 inside, the upper and lower parts of the ∩-shaped grounding wire hook 1 are axially symmetrically provided with a semicircular high-strength steel sheet 3, and the bottom of one end of the ∩-shaped grounding wire hook 1 is provided with a nut and an annealed copper wire The pressure port 4, the insulating operating rod 16 includes the connected upper rod head 11 and the lower rod head 14, and two semicircular rings suitable for the grounding wire hook 1 are arranged at the junction of the upper rod head 11 and the lower rod head 14. Hook12.

The pressing mechanism 2 includes two arc-shaped crimping pieces 8 with the same structure and arranged axially symmetrically. The upper two ends of the ∩-shaped ground wire hook 1 are symmetrically provided with the upper movable groove 5 of the crimping piece, and the upper movable groove 5 of the crimping piece is arranged below a parallel The spring fixing port 6, the lower connecting groove 7 of the crimping piece is set under the parallel spring fixing port 6, the upper part of the arc-shaped crimping piece 8 is placed in the upper movable groove 5 of the crimping piece, and the lower part is fixed in the lower connecting groove of the crimping piece through the rotating shaft 7, the middle part connects one end of the spring 9, and the other end of the spring 9 is installed in the parallel spring fixing port 6, and the two arc-shaped crimping pieces 8 installed inside the ∩-shaped grounding wire hook 1 are in the shape of a figure-eight, and the upper part forms a wire Fix the circular hole 17.

Wherein, two hook mounting grooves 13 are arranged on the bottom of the upper rod head 11, the semicircular hook 12 is installed in the hook mounting groove 13, the bottom of the upper rod head 11 is inserted in the lower rod head 14, fixed by screws, the upper rod head 11 An electroscope connecting port 10 is arranged at the upper end, and a cardan shaft connecting port 15 is arranged at the lower end of the lower rod head 14 . The semicircular hooks 12 are respectively arranged on the two ends of the upper rod head 11, one of the two semicircular hooks 12 opens upwards, and the other opens downwards.

Working principle and application process of the utility model:

When the special device for installing and disassembling the grounding wire is used, press the three-phase line fixing nut and the annealed copper wire into the interface 4, and connect the grounding wire hook 1 with the upwardly opening semicircular hook 12 on one side of the matching insulating operating rod 16. The semicircular high-strength steel sheet 3 opening downwards on the upper side of the side is lifted after being engaged, and the ∩-shaped grounding wire hook is hung on the wire, and then the semicircular hook 12 opening downwards on one side of the insulating operating rod 16 is connected with the The semicircular high-strength steel sheet 3 that opens upwards at the lower part of the grounding wire hook 1 side engages and pulls down firmly, and the wire is squeezed into the wire fixing circular hole 17 on the top of the pressing mechanism 2 to get final product.

In order to flexibly change the hanging direction of the hook according to the sagging angle of the wire during operation, the utility model connects the head of the operating rod with the lower part of the insulating operating rod 16 through the Vientiane shaft, so that the angle can be freely set and adjusted; There is a semicircular hook 1, and the installation and disassembly of the grounding wire hook is performed through the semicircular high-strength steel sheet 3 on the right side of the grounding wire hook 1; the top of the operating rod is connected to the electroscope through an insulating tube, and the electroscope is insulated. The length of the connecting pipe can be installed according to different voltage levels. The length of the insulating pipe meets the reliable and safe distance stipulated in the "State Grid Corporation of China Electricity Safety Work Regulations", which realizes the rapid operation of electric inspection and grounding. Eliminate the lack of safety distance caused by the long time span of installing the ground wire after the electric test and the whole-body metal connecting rod of the existing operating rod internal transmission mechanism, and the "live hanging ground wire" caused by the accidental power call of the equipment during operation The occurrence of vicious electrical misoperation accidents ensures the safety of operators and power grid equipment.

Claims (5)

1. an earth connection is installed and removed special purpose device, comprise clamp for ground wire (1) and supporting insulating bar (16), it is characterized in that: described clamp for ground wire (1) is ∩ type, ∩ type clamp for ground wire (1) inside arranges hold-down mechanism (2), the upper and lower axial symmetry of ∩ type clamp for ground wire (1) one side arranges semicircle high strength steel disc (3), the bottom of ∩ type clamp for ground wire (1) one end arranges nut and annealed copper wire crimping mouth (4), described insulating bar (16) comprises upper bar head (11) and the lower pole head (14) being connected, upper bar head (11) and lower pole head (14) junction arrange two semicircle hooks (12) that adapt with clamp for ground wire (1).

2. earth connection according to claim 1 is installed and removed special purpose device, it is characterized in that: described hold-down mechanism (2) comprises two arc compressing pieces (8) that structure is identical and axial symmetry arranges, ∩ type clamp for ground wire (1) both upper ends thereof is symmetrical arranged compressing piece top movable groove (5), compressing piece top movable groove (5) below arranges parallel spring fixing port (6), parallel spring fixing port (6) below arranges compressing piece bottom link slot (7), arc compressing piece (8) top is placed in compressing piece top movable groove (5), bottom is fixed in compressing piece bottom link slot (7) by rotating shaft, one end of middle part linking springs (9), the other end of spring (9) is arranged in parallel spring fixing port (6), be arranged on the inner two arc compressing pieces (8) of ∩ type clamp for ground wire (1) and be splayed, and fixedly circular hole (17) of wire is formed at top.

3. earth connection according to claim 1 is installed and removed special purpose device, it is characterized in that: the bottom of described upper bar head (11) arranges two hook mounting grooves (13), semicircle hook (12) is arranged in hook mounting groove (13), insert in lower pole head (14) bottom of upper bar head (11), is screwed.

4. earth connection mounting or dismounting special purpose device according to claim 1, is characterized in that: described upper bar head (11) upper end arranges electroscope connector (10), and the lower end of lower pole head (14) arranges universal drive shaft connector (15).

5. earth connection mounting or dismounting special purpose device according to claim 1, is characterized in that: described semicircle hook (12) is separately positioned on the two ends of upper bar head (11), (12) upward openings of two semicircle hooks, and another is under shed.