CN105226412B - Multifunctional grounding wire insulating bar - Google Patents

Abstract

The multi-functional grounding wire insulation rod includes a grounding wire clamp and an insulating rod. The grounding wire clamp includes a fixed part and a movable part. The fixed part includes an upper splint. A vertical support rod and a movable rod are installed in the cavity, and an elastic conductor is arranged between the support rod and the movable rod. The fixed ring, the upper side of the fixed ring is connected with the lower end of the tension spring, and the upper end of the tension spring is fixed with the upper splint along the radial direction of the arc-shaped notch; the elastic conductor is composed of a plurality of parallel conductive copper wires, and the conductive copper wire One end of the utility model is fixed to the support rod, and the other end is fixed to the movable rod and can be retracted and wound around the outer periphery of the movable rod. The invention has a wide application range and is convenient to use. At the same time, the grounding wire clamp has a good clamping force on the charged body, and the contact is firm, ensuring the safety of users.

Description

Multifunctional grounding wire insulation rod

technical field

The invention relates to a grounding wire device, which belongs to electric engineering safety auxiliary tools, in particular to a multifunctional grounding wire insulation rod.

Background technique

The grounding line is the line directly connected to the earth, and it can also be called a safety return line. It can directly transmit high voltage to the ground in case of danger. In the power engineering system, the grounding wire is an important tool to ensure the staff when the voltage appears unexpectedly on the equipment and lines that have been powered off. According to the standard requirements, the ground wire must be made of bare copper soft wire above ^25mm2 . The structure of the high-voltage grounding wire includes an insulating operating rod, a wire clamp, a short-circuit wire, a grounding wire, and a grounding terminal.

At present, the bayonet of the grounding wire insulation operating rod used in substations is flat and can only be clamped on the rectangular copper-aluminum bar. However, when it is used on flexible wires and tubular copper-aluminum busbars, the clamping connection will not be firm, and the grounding effect will be greatly reduced. . The connection between the bayonet socket and the bus bar or other charged bodies is not firm, and the grounding wire cannot provide proper safety protection when leakage occurs. Therefore, the existing grounding wire has a large potential safety hazard. At the same time, the existing flat bayonet is generally equipped with a groove for clamping the charged body. The shape and structure of the groove are usually fixed and cannot be adjusted, so it needs to be replaced when facing cables and busbars of different specifications. Different grounding wire tools are inconvenient to use and have insufficient clamping force; in addition, the existing grounding wire insulation rods are generally in a fixed linear shape. During the grounding of the tension pole tower, that is, the traditional utility pole, the staff is at a relatively high position on the top of the tower, and then hangs the hook of the ground wire of this fixed structure on the transmission line, because the position of each time it goes up It is not the same, so when working on the top of the tower, the way and direction of the hook will change, but the hook of the ground wire is always the same, so it is very inconvenient to hang, and often requires the staff to do sideways or high-altitude movement, etc. action, there is a great security risk.

Chinese patent (application number 201210410759.8, authorized announcement date May 13, 2015) discloses "a kind of grounding wire", including an insulating rod, a hook and a grounding lead, and one end of the grounding lead is conductively and fixedly connected to the hook , the hook is arranged on the top of the insulating rod, the hook and the top of the insulating rod are hinged together by a connecting pin, and a locking device is provided between the hook and the top of the insulating rod. This invention realizes that the hook can be rotated relative to the insulating rod by providing a locking device between the hook and the top of the insulating rod, thereby solving the problem of using the hook tilted, but the technical scheme adopted is more complicated and cannot achieve more accurate tilt angle control.

Contents of the invention

The invention provides a multifunctional grounding wire insulation rod to solve the defects in the prior art.

In order to realize the purpose of the present invention, adopt following technical scheme:

The multi-functional grounding wire insulating rod includes a grounding wire clamp and an insulating rod. The grounding wire clamp includes a fixed part and a movable part. The movable part is arranged on the lower side of the fixed part. , the upper part of the side plate has a vertical bar-shaped opening, and the lower part is installed with a grounding wire fixing bolt. The support rod and the movable rod, the elastic conductor is arranged between the support rod and the movable rod, the middle part of the elastic conductor is arranged in the arc-shaped notch, and the elastic conductor is provided with at least 3 flat fixing rings at equal intervals along the arc length , the upper side of the fixing ring is connected to the lower end of the tension spring, and the upper end of the tension spring is fixed to the upper splint along the radial direction of the arc-shaped notch; the elastic conductor is composed of a plurality of conductive copper wires arranged in parallel, and the conductive copper wire One end of the pole is fixed to the rod, and the other end is fixed to the movable rod and can be retracted and wound around the outer periphery of the movable rod. Rotating the movable rod can tighten the conductive copper wire to reduce the arc length or loosen it to increase the arc length. One end of the movable rod cooperates with the first nut through a threaded structure, and the other end stretches out from the upper splint to install a rotating handle, and the first nut is fixed to the upper splint; the movable part includes a vertical connecting plate and a transverse connecting plate The positioning frame is formed, the right end of the horizontal connecting plate is vertically fixed to the vertical connecting plate, and the positioning bolt is installed on the right side of the vertical connecting plate, and the positioning bolt passes through the strip opening and is fixed with the side plate by the second nut, and the horizontal connecting plate There is a vertical screw hole with internal thread in the middle part, and a screw rod is arranged in the screw hole, the lower clip is installed on the upper end of the screw rod, and the outer thread is arranged on the lower part of the screw rod; the insulating rod is connected and fixed with the screw rod through a thread structure.

In order to further realize the object of the present invention, the following technical solutions can also be adopted:

The insulating rod includes an upper rod joint and a lower rod joint, and the upper rod joint and the lower rod joint are connected through a rotating fixed structure. The rotation fixing structure includes a first stepped opening plane on the lower end of the upper rod section, a second stepped opening plane on the upper end of the lower rod section, and fan-shaped corrugated shrapnel. The first stepped opening plane and the second stepped opening plane are opposite and respectively set groove, the bottom surface of the groove is provided with a fan-shaped corrugated surface, and the fan-shaped corrugated shrapnel is arranged in the groove, a counterbore with an internal thread is opened at the center of the bottom surface of one side of the groove, and a counterbore with an internal thread is opened at the center of the bottom surface of the other groove. The through hole of the internal thread, the tightening bolt is installed in the through hole, and the tightening bolt cooperates with the counterbore to fix the upper rod joint and the lower rod joint rotatably. The tension of the tightening springs at the middle part is greater than the tension of the tensioning springs at the two sides. At the same time, five or seven tension springs can be provided, and the tension of the tension springs decreases from the middle part to the two sides respectively. The lower end of the insulating rod is equipped with multi-section extension rods, and the insulating rods and the extension rods, and the adjacent extension rods are all connected and fixed by threaded structures. The outer periphery of the extension rod is provided with vertical scale marks. There are 2 sets of the positioning bolts. The tension spring is provided with a fixed tube arranged radially along the arc-shaped notch, the upper end of the fixed tube is fixed to the upper splint, and the lower end of the fixed tube is open.

Beneficial effects of the present invention:

1. The upper splint of the grounding wire fixture of the present invention is set into a cavity structure, and the groove at the bottom of the upper splint is enlarged to form an arc-shaped notch, and an elastic conductor is installed in the arc-shaped notch, and the elastic conductor is composed of multiple The two ends of the conductive copper wire are fixed by the support rod and the movable rod. The elastic conductor is evenly set with a plurality of flat fixing rings, and the upper side of the fixing ring and the upper splint are installed and tightened. Spring, the elastic conductor can be set in an arc shape by tightening the spring tension, and the conductive copper wire can be tightened or released by rotating the movable rod to change the bending arc of the elastic conductor, so that the clamping of the upper splint can be made The mouth is adjustable, so that the grounding wire clamp can firmly clamp different specifications of live bodies such as cables and bus bars, which is convenient for adjustment and use.

2. Use parallel conductive copper wires to form an elastic conductor, which makes it easy to adjust its radian and ensures better clamping and conductive performance; in addition, compared with the use of plate-shaped elastic conductors, elastic conductors composed of conductive copper wires Has better anti-sloshing performance, similar to forming multiple jaws. The fixed tube is installed outside the tension spring, which can play a better guiding role for the tension spring, prevent the tension spring and the fixed ring from being deflected when the arc of the elastic conductor is adjusted, and reduce the impact of the upper splint and the lower clamp on the charged body clamping effect.

3. An upper rod joint and a lower rod joint are arranged on the insulating rod, and the upper rod joint and the lower rod joint are connected and fixed through a rotating fixed structure. The optional fixed structure can be composed of grooves and fan-shaped corrugated shrapnel respectively at the connecting parts of the upper rod joint and the lower rod joint. There is a counterbore, and a through hole is opened in the center of the other groove, and a tightening bolt is set in the through hole. By cooperating with the tightening bolt and the counterbore, the upper rod joint and the lower rod joint can be installed and fixed more conveniently. After installation, it needs to be rotated When the upper pole joint is rotated, the grounding wire clamp can be driven to adjust the inclination angle. At this time, the clamping force of the fan-shaped corrugated shrapnel and the fan-shaped corrugated surface can fix the upper pole joint and the lower pole joint at any inclination angle , so as to achieve more precise adjustment and control of the tilt angle.

4. The lower end of the insulating rod can also be spliced with multiple extension rods. For the installation of the grounding wire of the live body at a high position, it can be installed on the ground without climbing or setting up a ladder. In addition, the scale mark set on the extension rod It can conveniently measure the height between the electrified body and the ground, and facilitate the setting of the grounding cord. The connection between the insulating rod and the extension rod, and between adjacent extension rods is realized through a thread structure, which is convenient for carrying, assembly and disassembly.

5. The present invention has a wide application range, is easy to use, and can greatly reduce the installation time of the grounding wire; at the same time, the grounding wire clamp has a good clamping force on the charged body, and the contact is firm, ensuring the safety of the user.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a partially enlarged schematic diagram of I in Fig. 1 .

Figure 3 is a partial enlarged schematic diagram of II in Figure 1

Fig. 4 is a sectional view taken along line A-A of Fig. 2 .

Fig. 5 is a view taken along direction B of Fig. 3 .

Reference signs: 1-upper splint, 2-side plate, 3-ground wire fixing bolt, 4-arc notch, 5-support rod, 6-movable rod, 7-elastic conductor, 8-fixed ring, 9 -tension spring, 10-first nut, 11-rotating handle, 12-vertical connecting plate, 13-transverse connecting plate, 14-positioning bolt, 15-second nut, 16-screw rod, 17-lower clip Sheet, 18-insulation rod, 19-upper rod joint, 20-lower rod joint, 21-groove, 23-fan-shaped corrugated shrapnel, 24-tightening bolt, 25-extension rod.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

As shown in Figures 1-5, the multifunctional grounding wire insulating rod includes a grounding wire clamp and an insulating rod 18. The grounding wire clamp includes a fixed part and a movable part. Splint 1, the right end of upper splint 1 is vertically installed with side plate 2, the upper part of said side plate 2 has a vertical bar-shaped opening, and the lower part is equipped with a grounding wire fixing bolt, and said upper splint 1 is a hollow body with an opening on the bottom surface, wherein There is an arc-shaped notch 4 on the top of the cavity, and a vertical pole 5 and a movable rod 6 are installed in the cavity. An elastic conductor 7 is arranged between the pole 5 and the movable pole 6. The middle part of the elastic conductor 7 is arranged in an arc-shaped In the notch 4, the elastic conductor 7 is provided with at least three flat fixing rings 8 at equal intervals along the arc length, the upper side of the fixing ring 8 is connected with the lower end of the tension spring 9, and the upper end of the tension spring 9 is recessed The radial direction of the port 4 is fixed with the upper splint 1; the elastic conductor 7 is composed of a plurality of conductive copper wires arranged in parallel, one end of the conductive copper wire is fixed with the pole 5, and the other end is fixed with the movable rod 6 and can be The outer circumference of the movable rod 6 is retracted and wound, and the rotating movable rod 6 can tighten the conductive copper wire to reduce the arc length or loosen it to increase the arc length. One end of the movable rod 6 is connected to the first nut 10 through a threaded structure. Cooperate, after its other end protrudes from the upper splint 1, install the rotating handle 11, the first nut 10 is fixed with the upper splint 1; the movable part includes a positioning frame composed of a vertical connecting plate 12 and a transverse connecting plate 13, and the horizontal connection The right end of plate 13 is vertically fixed with vertical connecting plate 12, and positioning bolt 14 is installed on the right side of vertical connecting plate 12, and positioning bolt 14 is fixed with side plate 2 by the second nut 15 after passing through the strip opening, and described transverse connecting plate There is a vertical screw hole with internal thread in the middle part of 13, and screw rod 16 is arranged in the screw hole, the lower clip 17 is installed on the upper end of the screw rod 16, and the external thread is set at the bottom of the screw rod 16; 16 connections fixed.

Specifically, in the multi-functional grounding wire insulating rod provided in this embodiment, the connection and fixation between the grounding wire clamp and the insulating rod 18 is realized through a threaded structure, and at the same time, the upper splint 1 of the grounding wire clamp is set as a cavity structure, and on the upper splint 1. The groove 21 at the bottom is enlarged to form an arc-shaped notch 4, and an elastic conductor 7 is installed in the arc-shaped notch 4. The elastic conductor 7 is composed of a plurality of conductive copper wires arranged in parallel. The fixed rods and movable rods 6 on both sides of the shaped notch 4 fix the two ends of the conductive copper wire, and the elastic conductor 7 is evenly sleeved with a plurality of flat fixed rings 8, which are installed between the upper side of the fixed ring 8 and the upper splint 1. Tighten the spring 9, the elastic conductor 7 can be arranged in an arc shape by the tension of the tension spring 9, and the length of the conductive copper wire can be tightened or released by rotating the movable rod 6, thereby realizing the bending of the elastic conductor 7 Arc adjustment. The ground wire clamp can more firmly clamp different specifications of live bodies such as cables and bus bars, which is convenient for adjustment and use.

When in use, adjust the position of the positioning bolt 14 in advance according to the size of the electrified body, so as to preliminarily set the distance between the upper clamping plate 1 and the lower clamping piece 17, and then fix the ground wire clamp on the upper end of the insulating rod 18 through the screw rod 16 . At the same time adjust the radian of the elastic conductor 7 and clamp the charged body between the upper splint 1 and the lower clip 17, and rotate the insulating rod 18 to drive the lower clip 17 to move up so that the charged body is firmly clamped. Using the elastic conductor 7, when the charged body is clamped, the elastic conductor 7 can be squeezed in advance to maintain a better compression spring through the elastic conductor 7 to the charged body's thrust, so as to realize the grounding cord and The charged body is stably connected to ensure safe use.

As shown in FIG. 1 , FIG. 3 and FIG. 5 , the insulating rod 18 in this embodiment includes an upper rod segment 19 and a lower rod segment 20 , and the upper rod segment 19 and the lower rod segment 20 are connected by a rotationally fixed structure. Further, the rotation fixing structure can adopt the following method, the first stepped opening plane is set at the lower end of the upper rod section 19, the second stepped opening plane and the fan-shaped corrugated shrapnel 23 are set at the upper end of the lower rod section 20, the first stepped opening plane, the second stepped The mouth planes are opposite and are provided with grooves 21 respectively. The bottom surfaces of the grooves 21 are provided with fan-shaped corrugated surfaces. Hole, the central part of groove 21 bottom surfaces has the through hole of band internal thread in addition, and fastening bolt 24 is installed in the through hole, and fastening bolt 24 cooperates with counterbore and can be rotatably fixed by upper rod joint 19 and lower rod joint 20. The upper pole section 19 and the lower pole section 20 can be installed and fixed more conveniently by tightening the bolt 24 and the counterbore. After installation, when the upper pole section 19 needs to be rotated, the grounding wire clamp can be driven by rotating the upper pole section 19 The adjustment of the inclination angle, at this time, the clamping force of the fan-shaped corrugated shrapnel 23 and the fan-shaped corrugated surface can fix the upper rod section 19 and the lower rod section 20 at any inclination angle, thereby realizing more accurate adjustment and control of the inclination angle.

As shown in Fig. 1 and Fig. 2, in order to increase the radian of the elastic conductor 7, the tension of the tension spring 9 in the middle part of this embodiment can be expanded to be greater than the tension of the tension spring 9 in the two sides. At the same time, 5 or 7 tension springs can be provided, and the tension of the tension springs 9 decreases from the middle part to the two sides respectively, so that the arc of the elastic conductor 7 can be smoother.

As shown in FIG. 1 , in this embodiment, a multi-section extension rod 25 is installed at the lower end of the insulating rod 18 , and the distance between the insulating rod 18 and the extension rod 25 and between the adjacent extension rods 25 are all connected and fixed by threaded structures. The lower end of the insulating rod 18 can also be spliced with a plurality of extension rods 25. For the installation of the ground wire of the charged body at a high position, it can be installed on the ground without climbing or setting up a ladder. Further, a vertical scale mark may also be provided on the outer periphery of the extension rod 25 . The scale marks provided on the extension rod 25 can easily measure the height between the electrified body and the ground, and facilitate the setting of the ground cord. The connection between the insulating rod 18 and the extension rod 25, and between adjacent extension rods 25 is realized through a screw structure, which is convenient for carrying, assembly and disassembly.

Further, in this embodiment, a fixing tube is provided on the tension spring outer casing 9 along the radial direction of the arc-shaped notch 4 , the upper end of the fixing tube is fixed to the upper splint 1 , and the lower end of the fixing tube is open. A fixed tube is installed outside the tension spring 9, which can better guide the tension spring 9, prevent the tension spring 9 and the fixed ring 8 from being deflected when the arc of the elastic conductor 7 is adjusted, and lower the upper splint 1 and the lower The clamping effect of the clip 17 on the charged body.

The invention has a wide application range, is easy to use, and can greatly reduce the installation time of the grounding wire; meanwhile, the grounding wire clamp has a good clamping force on the charged body, and the contact is firm, ensuring the safety of users.

The technical contents not described in detail in the present invention are all known technologies.

Claims (9)

1. Multifunctional grounding wire insulation rod, including grounding wire clamps and insulating rods. The grounding wire clamp includes a fixed part and a movable part. The movable part is located on the lower side of the fixed part. The side plate has a vertical bar-shaped opening on the top of the side plate, and the ground wire fixing bolt is installed on the bottom of the side plate. It is characterized in that the upper splint is a hollow body with an opening on the bottom surface, and an arc-shaped notch is provided in the middle. A vertical support rod and a movable rod are installed in the cavity, and an elastic conductor is arranged between the support rod and the movable rod. 3 flat fixing rings, the upper side of the fixing ring is connected with the lower end of the tension spring, and the upper end of the tension spring is fixed with the upper splint along the radial direction of the arc-shaped notch; the elastic conductor is composed of a plurality of conductive copper wires arranged in parallel One end of the conductive copper wire is fixed to the support rod, and the other end is fixed to the movable rod and can be wound around the outer periphery of the movable rod. Rotating the movable rod can tighten the conductive copper wire to reduce the arc length or loosen it. The arc length becomes larger, one end of the movable rod cooperates with the first nut through the threaded structure, and the other end stretches out from the upper splint to install a rotating handle, and the first nut is fixed to the upper splint; the movable part includes a vertical The positioning frame composed of the connecting plate and the horizontal connecting plate, the right end of the horizontal connecting plate is vertically fixed to the vertical connecting plate, and the positioning bolt is installed on the right side of the vertical connecting plate, and the positioning bolt passes through the strip opening and is fixed to the side plate by the second nut , the middle part of the horizontal connecting plate is provided with a vertical screw hole with an internal thread, and a screw is arranged in the screw hole, the lower clip is installed on the upper end of the screw, and the lower part of the screw is provided with an external thread; the insulating rod is connected to the screw through the thread structure. The connection is fixed. 2. The multi-functional grounding wire insulation rod according to claim 1, characterized in that, the insulation rod comprises an upper rod section and a lower rod section, and the upper rod section and the lower rod section are connected by a rotating and fixed structure. 3. The multi-functional grounding wire insulation rod according to claim 2, characterized in that, the rotation fixing structure includes a first stepped opening plane opened at the lower end of the upper pole section, and a second stepped opening plane opened at the upper end of the lower pole section With the fan-shaped corrugated shrapnel, the plane of the first stepped mouth and the plane of the second stepped mouth are opposite and grooves are respectively provided. The bottom surface of the groove is provided with a fan-shaped corrugated surface, and the fan-shaped corrugated shrapnel is arranged in the groove. There is a counterbore with an internal thread, and a through hole with an internal thread is opened at the center of the bottom of the other groove, and a tightening bolt is installed in the through hole, and the tightening bolt cooperates with the counterbore to make the upper rod joint and the lower rod joint rotatable fixed. 4 . The multi-functional grounding wire insulation rod according to claim 1 , wherein the tension of the tension spring at the middle part is greater than the tension of the tension spring at the two sides. 5. The multi-functional grounding wire insulating rod according to claim 1, characterized in that there are 5 or 7 tension springs, and the tension of the tension springs decreases from the middle part to the two sides respectively. 6. The multi-functional grounding wire insulation rod according to claim 1, characterized in that, the lower end of the insulation rod is equipped with multi-section extension rods, and between the insulation rods and the extension rods, and between adjacent extension rods are all threaded. The structural connection is fixed. 7. The multifunctional grounding wire insulation rod according to claim 6, characterized in that, vertical scale marks are provided on the outer periphery of the extension rod. 8. The multifunctional grounding wire insulating rod according to claim 1, wherein there are two sets of the positioning bolts. 9. The multifunctional grounding wire insulating rod according to claim 1, characterized in that, the tension spring is covered with a fixed tube arranged radially along the arc-shaped notch, and the upper end of the fixed tube is fixed to the upper splint, and its The lower end is open.