Live-line work lead fixing support and lead fixing method

Abstract

The invention relates to the technical field of cable installation tools, in particular to a live-line work lead fixing support and a lead fixing method, and the live-line work lead fixing support comprises an insulating supporting rod, a supporting assembly and a lead fixing part. The device is reasonable and compact in structure and convenient to use, the supporting part is fixedly connected with the cross arm, the insulating supporting rod is kept in a vertical state, and therefore after the upper portion and the lower portion of a to-be-replaced lead are fixed through the two lead clamps on the insulating supporting rod, the lead can be better guided to be arranged in the direction of the insulating supporting rod, and the replacement efficiency is improved. The lead wire is prevented from shaking with wind due to no support under the condition of large wind power in outdoor operation, so that the lead wire to be replaced can always keep an enough safe distance from other live-line equipment, and potential safety hazards are eliminated. The lead is clamped through the movable clamping plate, the fixed clamping plate, the first stud and the first nut, operation is easy, adjustment is convenient, the working process is simplified, and the labor intensity of operators is greatly reduced. The two lead wire clamps are distributed independently and can be adjusted independently, and operation and implementation are easy.

Description

Technical Field

[0001] The present invention relates to the technical field of cable installation tools, and is a live working lead fixing bracket and a lead fixing method. Background Art

[0002] In power engineering, leads can connect devices such as transmission lines, substations, and distribution lines to form a complete power system. As conductors, leads can transmit electrical energy from power plants to substations, then from substations to distribution lines, and finally to users. Leads play roles such as isolation, protection, and grounding in the power system, ensuring the safe and stable operation of the power system, and having the advantages of being convenient for maintenance and replacement and reducing the maintenance cost of the power system.

[0003] With the extension of the service time, the insulation layer of the lead may become brittle, aged, or even cracked or damaged, resulting in safety accidents such as short circuits and electric leakage of the lead, causing property losses and even casualties. As the resistance of the aged lead increases, it will cause the lead to heat up and the power consumption to increase, affecting the power transmission efficiency, and may also cause problems such as unstable power supply and voltage fluctuations, affecting the normal operation of electrical equipment. Replacing the aged wire can restore the power supply quality, eliminate potential safety hazards, and ensure the normal operation of the power system. During the process of replacing the lead under load, removing and installing the switch lead and how to handle the suspended lead are the key points and also the main risk points of this operation project. When removing and installing the switch lead, it is necessary to be fast and accurate, and the suspended lead should maintain a safe distance from the live equipment.

[0004] Currently, the conventional method for disassembling and assembling the downlead is as follows: when removing the switch lead, the operator uses an insulating rope buckle to fix the lead to the main lead, then removes the parallel groove clamp, and suspends the removed lead in the air. When installing, the lead is combined with the main lead and fixed with a parallel groove clamp. During the removal process, the lead is prone to falling, posing a safety hazard; when installing the lead, only manual lifting and fixing of the lead can be relied on, and the installation speed is slow, with safety risks; the suspended lead cannot be reliably fixed, and the disconnected wire ends swing randomly, making it difficult to control the safe distance.

[0005] The Chinese patent document with the publication number CN114284921A discloses a lead fixing bracket for a pole-mounted switch, which includes an insulating rod, a cross-arm fixing part arranged at the upper part of the insulating rod, and a switch lead fixing part arranged at the lower part of the insulating rod. The insulating rod includes an insulating pull rod, an insulating sleeve sleeved outside the insulating pull rod, and a compression spring sleeved on the insulating pull rod and limited between the insulating sleeve and the insulating pull rod. The cross-arm fixing part includes an upper cross-arm clamp fixedly arranged at the top of the insulating pull rod and a lower cross-arm clamp fixedly arranged at the top of the insulating sleeve. The lower cross-arm clamp can move up and down along the insulating pull rod with the insulating sleeve to stretch or compress the compression spring, so that the lower cross-arm clamp and the upper cross-arm clamp are clamped or separated, and the upper cross-arm clamp and the lower cross-arm clamp cooperate to clamp the cross-arm. It can realize the rapid centralized fixing of the switch leads, with convenient operation, time and labor saving, and safe and reliable. However, it fixes the three-phase conductors of the leads at the same time, and there is only one fixing point between each conductor. When the lead length is long, the fixing effect is not reliable.

[0006] Therefore, the following deficiencies exist in the existing lead replacement process: Most of the existing lead fixing brackets are of an integral structure, which cannot be quickly assembled during actual use, nor can the leads be quickly fixed. Summary of the Invention

[0007] The present invention provides a live working lead fixing bracket, a live working lead fixing bracket and a lead fixing method, which overcome the above-mentioned deficiencies of the prior art and can effectively solve the problems that most of the existing lead fixing brackets are of an integral structure and cannot be quickly assembled during actual use, nor can the leads be quickly fixed during the existing lead replacement process.

[0008] One of the technical solutions of the present invention is achieved by the following measures: A live working lead fixing bracket includes an insulating support rod, a support assembly and a lead fixing part. The outer side of the middle part of the insulating support rod and the right end of the support assembly are fixedly installed together through a connecting part. The left part of the support assembly is used for fixedly connecting with the cross-arm so as to keep the insulating support rod in a vertical state; lead clamps are arranged on the outer sides of the upper part and the lower part of the insulating rod. Each lead clamp includes a fixed clamping plate, a movable clamping plate, a first stud, a first nut and a slider with an axial through hole. The inner side of the slider is sleeved on the outer side of the insulating support rod; the middle part of the right side of the slider is fixedly installed with a fixed clamping plate. The middle part of the front side of the fixed clamping plate is hinged with a movable clamping plate. The rear side of the left part of the movable clamping plate is provided with a front half wire groove with an opening backward. A rear half wire groove with an opening forward is provided on the fixed clamping plate corresponding to the position of the front half wire groove. The right end of the movable clamping plate is provided with a first notch that is open to the right and runs through from front to back. A second notch that is open to the right and runs through from front to back is provided at the right end of the fixed clamping plate corresponding to the position of the first notch. A first stud with the front part located in the first notch is rotatably installed in the second notch, and a first nut with the rear end abutted against the corresponding position on the front side of the movable clamping plate is provided at the front end of the first stud.

[0009] The following is a further optimization and / or improvement of the above technical solution of the invention: The above support assembly may include an insulating cross bar, a fixed clamping plate, an insulating sleeve, a movable clamping plate, a clamping spring, and an insulating end cap with an axial through hole in the middle and opening to the left. The right end of the insulating cross bar is fixedly installed in the middle of the left side of the connecting portion. The outer side of the left portion of the insulating cross bar is fixedly installed with a fixed clamping plate. The lower side of the left end of the fixed clamping plate is fixedly installed with an L-shaped clamping plate. There is an anti-detachment baffle on the upper side of the right end of the L-shaped clamping plate. A lower clamping opening is formed between the left side of the anti-detachment baffle and the inner side of the lower end of the L-shaped clamping plate. An insulating sleeve is sleeved on the outer side of the insulating cross bar at a position corresponding to the right side of the fixed clamping plate. The outer side of the left end of the insulating sleeve is fixedly installed with a movable clamping plate. There is a right clamping plate on the lower side of the movable clamping plate, and the upper side of the left portion of the right clamping plate abuts against the lower side of the right portion of the fixed clamping plate. There is a right clamping opening that opens to the left and runs through from front to back in the middle of the left side of the right clamping plate. A spring installation inner ring groove is provided inside the insulating sleeve at a position corresponding to the right side of the movable clamping plate. A clamping spring sleeved on the outer side of the insulating cross bar is provided in the spring installation inner ring groove. The outer side of the right end of the insulating sleeve is fixedly installed with an insulating end cap sleeved on the outer side of the insulating cross bar. The inner side of the right end of the insulating end cap abuts against the right end of the clamping spring.

[0010] The above lead clamp may further include a first locking bolt. There is a first screw hole that runs through from inside to outside in the middle of the left side of the slider. A first locking bolt with its inner end abutting against the outer side of the left portion of the insulating support rod is provided in the first screw hole.

[0011] The above insulating cross bar may be a telescopic rod.

[0012] The above connecting portion may include a left support, a right support, a second stud, a second nut, and an upper clamping seat. The middle of the left side of the left support is fixedly installed with a connecting sleeve. The inner side of the connecting sleeve is fixedly installed with the outer side of the right end of the support assembly. There is a left limiting groove that opens to the right and runs through from top to bottom in the middle of the right side of the left support. There are a front fixing plate and a rear fixing plate on the front side and the rear side of the lower part of the left support respectively. The middle of the rear end of the rear fixing plate is hinged with the right support. There is a right limiting groove that opens to the left and runs through from top to bottom in the middle of the left side of the right support corresponding to the left limiting groove. The inner sides of the right limiting groove and the left limiting groove are respectively attached to the corresponding positions on the outer side of the middle of the insulating support rod. There is a third notch that opens forward and runs through from left to right in the middle of the front side of the front fixing plate. There is a fourth notch that opens forward and runs through from left to right at the front end of the right support corresponding to the third notch. A second stud with its left end rotatably installed in the third notch is provided in the fourth notch. A second nut with its left side abutting against the right side of the right support is provided on the outer side of the right end of the second stud.

[0013] The above connecting portion may further include an upper clamping seat. There are upper clamping platforms on the front side and the rear side of the upper part of the left support. An upper clamping seat is sleeved on the outer side of the insulating support rod at a position corresponding to the upper side of the left support. There are upper clamping claws on the left side of the front part and the left side of the rear part of the upper clamping seat, and the lower right side of the upper clamping claws can abut against the corresponding positions on the left side of the corresponding upper clamping platforms.

[0014] The above-mentioned connecting part may further include a second locking bolt. A second through hole is provided in the middle of the right side of the upper clamping seat. A second locking bolt with an inner end abutting against the outer side of the right part of the insulating support rod is provided in the second through hole.

[0015] At least one traction rope fixing part may be respectively provided on the outer sides of the upper end and the lower end of the above-mentioned insulating rod. Each traction rope fixing part may include a movable ring and a third locking bolt. The inner side of the movable ring is sleeved with the corresponding position on the outer side of the insulating support rod. A boss is provided in the middle of the right side of the movable ring. A rope passing hole penetrating through the front and back is provided in the middle of the boss. A third through hole penetrating through the inside and outside is provided in the middle of the left side of the movable ring. A third locking bolt with an inner end abutting against the outer side of the left part of the insulating support rod is provided in the third through hole.

[0016] The above may further include anti-disengagement end caps. Anti-disengagement end caps are provided on the outer sides of the upper end and the lower end of the insulating support rod.

[0017] The second technical solution of the present invention is achieved by the following measures: A lead fixing method using a live working lead fixing bracket includes: selecting one of the leads as the lead to be replaced, and performing overall shielding protection on the entire line, and then completing the shielding treatment of the remaining two leads; Adjust the relative positions between the two lead clips and the insulating bracket according to the lead length, so that the two lead clips can respectively align with the upper and lower positions of the lead to be replaced, that is: first loosen the first nut, so that the first stud can slide out and separate to the right from the first notch, then rotate the movable clamping plate to the left to open it, place the rear part of the lead to be replaced in the rear half wire groove, then rotate the movable clamping plate in the reverse direction to close it, place the front part of the lead to be replaced in the front half wire groove, then move the first stud again to make the first stud snap into the first notch again, and finally tighten the first nut in the reverse direction to clamp the lead to be replaced through the fixed clamping plate and the movable clamping plate; According to the position of the cross arm, quickly install the support assembly at the corresponding position in the middle of the insulating support rod, and finally fixedly install the left part of the support assembly on the cross arm near the position of the lead to be replaced.

[0018] The structure of the present invention is reasonable and compact, and it is convenient to use. It is fixedly connected to the cross arm through the support part, so that the insulating rod is kept in a vertical state. Therefore, after the upper and lower parts of the lead to be replaced are respectively fixed by two lead clamps on the insulating rod, it can better guide the lead to be arranged along the direction of the insulating rod, avoiding the lead shaking with the wind without support in the case of strong wind during outdoor operation, so that the lead to be replaced and other live equipment can always maintain a sufficient safety distance, eliminating potential safety hazards. The lead is clamped by the movable clamping plate, the fixed clamping plate, the first stud and the first nut, with simple operation and convenient adjustment, simplifying the work process and greatly reducing the labor intensity of the operators. The two lead clamps are independently distributed, can be adjusted separately, and have simple operation and are easy to implement. By the fixed clamping plate, the movable clamping plate that can slide left and right and the clamping spring with a reset function, the angle iron of the cross arm is inserted into the corresponding lower clamping opening and right clamping opening, and the present invention can be quickly and fixedly installed on the cross arm, with simple and easy-to-learn operation and greatly reducing the labor intensity of the operators. One end of the towing rope can be tied to the moving ring through the rope passing hole, and the other end is tied to the corresponding position of the upper or lower part of the lead, which can effectively prevent the present invention from falling to the ground due to improper fixation, and better protect the personal safety of the operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG Figure 1 1 is the front view structural schematic diagram of Embodiments 1 to 9 of the present invention.

[0020] FIG Figure 2 is the enlarged sectional structural schematic diagram of the support assembly in FIG Figure 1 1.

[0021] FIG Figure 3 is the three-dimensional structural schematic diagram of FIG Figure 1 1.

[0022] FIG Figure 4 is the enlarged three-dimensional structural schematic diagram of part A in FIG Figure 3 1.

[0023] The codes in the attached drawings are respectively: 1 is an insulating support rod, 2 is a cross arm, 3 is a fixed clamping plate, 4 is a movable clamping plate, 5 is a first stud, 6 is a first nut, 7 is a slider, 8 is a front half wire groove, 9 is a rear half wire groove, 10 is a first notch, 11 is an insulating cross bar, 12 is a fixed clamping jaw plate, 13 is an insulating sleeve, 14 is a movable clamping jaw plate, 15 is a clamping spring, 16 is an insulating end cap, 17 is an L-shaped clamping plate, 18 is an anti-detachment baffle, 19 is a lower clamping opening, 20 is a right clamping plate, 21 is a right clamping opening, 22 is a first locking bolt, 23 is a left support, 24 is a right support, 25 is a second stud, 26 is a second nut, 27 is an upper clamping seat, 28 is a front fixing plate, 29 is a third notch, 30 is a fourth notch, 31 is an upper clamping platform, 32 is an upper clamping claw, 33 is a second locking bolt, 34 is a moving ring, 35 is a third locking bolt, 36 is a boss, 37 is a rope passing hole, 38 is an anti-detachment end cap, 39 is a lead wire to be replaced, 40 is a spring installation inner ring groove, 41 is a connecting sleeve. Detailed implementation manners

[0024] The present invention is not limited by the following embodiments, and the specific implementation manners can be determined according to the technical solution of the present invention and the actual situation.

[0025] In the present invention, for the convenience of description, the description of the relative position relationship of each component is carried out according to the layout mode of the attached drawings of the specification. For example, the position relationships such as front, rear, upper, lower, left, and right are determined according to the layout direction of the attached drawings of the specification. Figure 1 The position relationships such as front, rear, upper, lower, left, and right are determined according to the layout direction of the attached drawings of the specification.

[0026] The present invention will be further described below in conjunction with the embodiments and the attached drawings: Embodiment 1: As shown in the attached drawings Figures 1 to 4 The live working lead wire fixing bracket includes an insulating support rod 1, a support assembly and a lead wire fixing part. The outer side of the middle part of the insulating support rod 1 and the right end of the support assembly are fixedly installed together through a connecting part. The left part of the support assembly is used for fixedly connecting with the cross arm 2 so as to keep the insulating support rod 1 in a vertical state; lead wire clips are arranged on the outer sides of the upper part and the lower part of the insulating rod. Each lead clamp includes a fixed clamping plate 3, a movable clamping plate 4, a first stud 5, a first nut 6, and a slider 7 having an axial through hole. The inner side of the slider 7 is sleeved on the outer side of the insulating support rod 1; a fixed clamping plate 3 is fixedly installed in the middle of the right side of the slider 7. A movable clamping plate 4 is hinged in the middle of the front side of the fixed clamping plate 3. A front half wire groove 8 with an opening facing backward is provided at the rear side of the left part of the movable clamping plate 4. A rear half wire groove 9 with an opening facing forward is provided on the fixed clamping plate 3 corresponding to the position of the front half wire groove 8; a first notch 10 with an opening facing right and penetrating through the front and rear is provided at the right end of the movable clamping plate 4. A second notch with an opening facing right and penetrating through the front and rear is provided at the right end of the fixed clamping plate 3 corresponding to the position of the first notch 10. A first stud 5 with the front part located in the first notch 10 is rotatably installed in the second notch. A first nut 6 is provided at the front end of the first stud 5, and the rear end of the first nut 6 abuts against the corresponding position on the front side of the movable clamping plate 4.

[0027] During use, according to the length of the wire, the two lead clamps can be slid up and down to make the distance between them meet the predetermined requirements. To prevent the two from shifting, after adjustment in place, a non-slip layer or a locking mechanism is provided between the inner side of the slider 7 and the insulating support rod 1; when the two lead clamps are adjusted in place, the upper large lead clamp is exactly aligned with the upper position of the lead 39 to be replaced, and the lower lead clamp is exactly aligned with the lower position of the lead 39 to be replaced; at this time, loosen the first nut 6 to enable the first stud 5 to slip out to the right from the first notch 10, turn the movable clamping plate 4 to the left to open it, then place the upper or lower part of the wire into the rear half wire groove 9 on the corresponding fixed clamping plate 3, rotate the movable clamping plate 4 in the reverse direction to reset the movable clamping plate 4, and wrap the corresponding position of the upper or lower part of the lead 39 to be replaced through the front half wire groove 8 on it in cooperation with the rear half wire groove 9; rotate the first stud 5 in the reverse direction to make the front part of the first stud 5 embed into the first notch 10 again, and tighten the first nut 6, then the fixed clamping plate 3 and the movable clamping plate 4 can clamp the lead 39 to be replaced, better guide the lead to be arranged along the direction of the insulating support rod 1, prevent the lead 39 to be replaced from shaking or swaying with the wind during the replacement process, and enable the lead 39 to be replaced to always maintain a sufficient safety distance from other live equipment, eliminating potential safety hazards.

[0028] The insulating support rod 1 can be fixedly installed with the angle iron of the cross arm 2 through a support assembly, and the support assembly and the angle iron of the cross arm 2 can be fixedly installed through a hoop in the prior art with the angle iron of the cross arm 2.

[0029] According to requirements, the fixed clamping plate 3, the movable clamping plate 4, and the slider 7 having an axial through hole can all be processed from insulating materials in the prior art. The first nut 6 can be realized by a plastic head, a plum blossom head, or a butterfly hand-tightening nut in the prior art. In this embodiment, the first stud 5 and the first nut 6 can be an engineering plastic stud with good insulation and an engineering plastic hand-tightening nut respectively.

[0030] The structure of the present invention is reasonable and compact, and it is convenient to use. It is fixedly connected to the cross arm 2 through the support part, so that the insulating support rod 1 maintains a vertical state. Therefore, after the upper and lower parts of the lead 39 to be replaced are respectively fixed by two lead clamps on the insulating support rod 1, it can better guide the lead to be arranged along the direction of the insulating support rod 1, avoiding the lead shaking with the wind without support in the case of strong wind during outdoor operation, so that the lead 39 to be replaced can always maintain a sufficient safety distance from other live equipment, eliminating potential safety hazards. The lead is clamped by the movable clamping plate 4, the fixed clamping plate 3, the first stud 5 and the first nut 6, with simple operation and convenient adjustment, simplifying the work process and greatly reducing the labor intensity of the operators. The two lead clamps are independently distributed, can be adjusted separately, with simple operation and easy to implement.

[0031] According to actual needs, the above live working lead fixing bracket can be further optimized and / or improved as follows: Embodiment 2: As an optimization of the above embodiment, as shown in the appendix Figures 1 to 4 As shown, the support assembly includes an insulating cross bar 11, a fixed clamping plate 12, an insulating sleeve 13, a movable clamping plate 14, a clamping spring 15 and an insulating end cap 16 with an axial through hole in the middle and opening to the left. The right end of the insulating cross bar 11 is fixedly installed in the middle of the left side of the connecting part. The outer side of the left part of the insulating cross bar 11 is fixedly installed with a fixed clamping plate 12. The lower side of the left end of the fixed clamping plate 12 is fixedly installed with an L-shaped clamping plate 17. An anti-detachment baffle 18 is provided on the upper side of the right end of the L-shaped clamping plate 17. A lower clamping opening 19 is formed between the left side of the anti-detachment baffle 18 and the inner side of the lower end of the L-shaped clamping plate; an insulating sleeve 13 is sleeved on the outer side of the insulating cross bar 11 at a position corresponding to the right side of the fixed clamping plate 12. The outer side of the left end of the insulating sleeve 13 is fixedly installed with a movable clamping plate 14. A right clamping plate 20 with the upper side of the left part abutted against the lower side of the right part of the fixed clamping plate 12 is provided on the lower side of the movable clamping plate 14. A right clamping opening 21 that is open to the left and penetrates through the front and back is provided in the middle of the left side of the right clamping plate 20; a spring installation inner ring groove 40 is provided on the inner side of the insulating sleeve corresponding to the right side of the movable clamping plate 14. A clamping spring 15 sleeved on the outer side of the insulating cross bar 11 is provided in the spring installation inner ring groove 40. The outer side of the right end of the insulating sleeve 13 is fixedly installed with an insulating end cap 16 sleeved on the outer side of the insulating cross bar 11. The inner side of the right end of the insulating end cap 16 abuts against the right end of the clamping spring 15.

[0032] In this technical solution, in order to facilitate inserting the angle iron of the cross arm 2 into the corresponding lower clamping opening 19 and right clamping opening 21, guide chamfers are provided on the upper left side of the anti-detachment baffle 18 and on the right clamping plate 20 at the corresponding left end position of the right clamping opening 21.

[0033] By setting it in this way, the fixed clamping plate 12 and the L-shaped clamping plate can clamp the left side of the angle iron, the lower clamping opening 19 just clamps the lower end of the angle iron, and the right clamping opening 21 just clamps the right end of the angle iron, enabling the support assembly to be quickly and fixedly installed on the cross arm 2; the movable clamping plate 14 can move left and right along the insulating cross bar 11 with the insulating sleeve 13 to stretch or compress the clamping spring 15, so that the movable clamping plate 14 and the fixed clamping plate 12 are clamped or separated, and reset under the spring pre-tightening force of the clamping spring 15. The connection is fast and the operation is convenient; the cooperation between the movable clamping plate 14 and the fixed clamping plate 12 can quickly fixedly install the present invention on the angle iron of the cross arm 2, greatly improving the fixed installation speed between the present invention and the angle iron of the cross arm 2 and effectively improving the operation efficiency of lead replacement.

[0034] According to requirements, the insulating cross bar 11, the fixed clamping plate 12, the insulating sleeve 13, the movable clamping plate 14 and the insulating end cover 16 can all be processed from insulating materials in the prior art.

[0035] Embodiment 3: As an optimization of the above embodiment, as shown in the attached Figure 1 、 3 figure, the lead clamp further includes a first locking bolt 22. A first through hole is provided in the middle of the left side of the slider 7, and a first locking bolt 22 with an inner end abutted against the outer side of the left part of the insulating support rod 1 is provided in the first through hole.

[0036] By setting it in this way, relative sliding between the lead clamp and the insulating rod can be effectively prevented.

[0037] According to requirements, the second locking bolt 33 can be realized by using a plastic head, a plum blossom head or a butterfly hand-tightening bolt in the prior art, and can be an engineering plastic hand-tightening bolt with good insulation in this embodiment.

[0038] Embodiment 4: As an optimization of the above embodiment, as shown in the attached Figures 1 to 4 figure, the insulating cross bar 11 is a telescopic rod.

[0039] By setting it in this way, the relative position between the insulating bracket and the cross arm 2 can be conveniently adjusted.

[0040] Embodiment 5: As an optimization of the above embodiment, as shown in the attached Figure 1 、 3As shown in FIGS. 0 to 4, the connecting portion includes a left support 23, a right support 24, a second stud 25, a second nut 26, and an upper clamping seat 27. A connecting sleeve 41 is fixedly installed in the middle of the left side of the left support 23, and the inner side of the connecting sleeve 41 is fixedly installed together with the outer side of the right end of the support assembly. A left limiting groove that is open to the right and penetrates up and down is provided in the middle of the right side of the left support 23. Front fixing plates 28 and rear fixing plates are respectively provided on the front side and the rear side of the lower part of the left support 23. The middle of the rear end of the rear fixing plate is hinged with the right support 24. A right limiting groove that is open to the left and penetrates up and down is provided in the middle of the left side of the right support 24 corresponding to the position of the left limiting groove. The inner sides of the right limiting groove and the left limiting groove are respectively attached to the corresponding positions on the outer side of the middle of the insulating rod 1. A third notch 29 that is open to the front and penetrates left and right is provided in the middle of the front side of the front fixing plate 28. A fourth notch 30 that is open to the front and penetrates left and right is provided at the front end of the right support 24 corresponding to the position of the third notch 29. A second stud 25 whose left end is rotatably installed in the third notch 29 is provided in the fourth notch 30. A second nut 26 whose left side abuts against the right side of the right support 24 is provided on the outer side of the right end of the second stud 25. Upper clamping platforms 31 are provided on both the front side and the rear side of the upper part of the left support 23. An upper clamping seat 27 is sleeved on the outer side of the insulating rod 1 corresponding to the upper side of the left support 23. Upper clamping claws 32 whose lower right sides can abut against the corresponding positions on the left side of the corresponding upper clamping platforms 31 are provided on both the front left side and the rear left side of the upper clamping seat 27.

[0041] In this technical solution, a channel for the insulating rod 1 to pass through can be formed after the left limiting groove and the right limiting groove are buckled together.

[0042] During use, after loosening the second nut 26, pull the right end of the second stud 25 forward, so that the second stud 25 rotates to the left and disengages from the fourth notch 30, and then the support assembly can be removed from the insulating rod 1.

[0043] During normal operation, only need to loosen the second nut 26 to reduce the clamping force between the left support 23 and the right support 24, and then the support assembly can be moved up and down along the length direction of the insulating rod to adjust the relative position between the support assembly and the cross arm 2, so as to better fixedly install the present invention at a suitable position on the cross arm 2.

[0044] After the adjustment is completed, tighten the second nut 26 in the reverse direction, and the left support 23 and the right support 24 can effectively clamp the insulating rod to prevent loosening and slipping, which may affect normal operation. After the left limiting groove and the right limiting groove are buckled together, their inner diameters are slightly smaller than the outer diameter of the insulating rod to better clamp the insulating rod.

[0045] According to requirements, the left support 23 and the connecting sleeve 41 can be integrally formed. Both the left support 23 and the right support 24 can be made of insulating materials in the prior art. The second nut 26 can be realized by using a plastic head, a plum blossom head or a butterfly hand-tightening nut in the prior art. In this embodiment, the second stud 25 and the second nut 26 can be an engineering plastic stud and an engineering plastic hand-tightening nut with good insulation respectively.

[0046] Embodiment 6: As an optimization of the above embodiment, as shown in Figure 1 , 3 to 4, the connecting portion further includes an upper clamping seat 27. Upper clamping platforms 31 are provided on the front side and the rear side of the upper part of the left support 23. An upper clamping seat 27 is sleeved outside the insulating support rod 1 corresponding to the upper side position of the left support 23. Upper clamping claws 32 are provided on the left side of the front part and the left side of the rear part of the upper clamping seat 27, and the right side of the lower part thereof can be abutted against the corresponding position on the left side of the corresponding upper clamping platform 31.

[0047] During the use process, after loosening the second nut 26, pull the right end of the second stud 25 forward, so that the second stud 25 rotates leftward and disengages from the fourth notch 30, and then the support assembly can be removed from the insulating support rod 1.

[0048] During the normal operation process, only need to pull the upper clamping seat 27 upward to disengage the upper clamping claw 32 from the upper clamping platform 31, and then loosen the second nut 26 to reduce the clamping force between the left support 23 and the right support 24, so that the support assembly can be moved up and down along the length direction of the insulating rod, so as to adjust the relative position between the support assembly and the cross arm 2, and better fix and install the present invention on the cross arm 2.

[0049] After the adjustment is completed, tighten the second nut 26 in the reverse direction, so that the left support 23 and the right support 24 can firmly clamp the insulating rod. Then press the upper clamping seat 27 downward in the reverse direction to make the upper clamping claw 32 and the upper clamping platform 31 re-insert and buckle together, so that the connecting portion and the support assembly can be reliably fixed and installed together, preventing loosening and slipping and affecting the normal operation.

[0050] In this technical solution, after the upper clamping claw 32 and the upper clamping platform 31 are inserted and buckled together, when the upper clamping claw 32 moves downward, it can continuously wedge the upper clamping platform 31, and reliably fix and install the inner side of the upper end of the connecting portion and the outer side of the insulating support rod 1 together; when the second nut 26 is tightened, the elastic deformation generated between the left support 23 and the right support 24 can firmly clamp and fix the lower end of the connecting portion and the insulating rod together; by such a setting, the contact area between the connecting portion and the insulating support rod 1 can be effectively increased, and through the upper and lower two force-bearing fixing points, the stability is better, the clamping and fixing effect between the support portion and the insulating rod is better, and the structure is simple, the disassembly and assembly are easy, the position adjustment speed is fast, and the operation time can be effectively saved.

[0051] According to requirements, the upper clamping seat 27 can be made of insulating materials in the prior art.

[0052] Embodiment 7: As an optimization of the above embodiments, as shown in the appended Figure 1 , 3 to Figure 4, the connecting portion further includes a second locking bolt 33 and a third locking bolt 35. A second screw hole that penetrates both inside and outside is provided in the middle of the right side of the upper clamping seat 27, and a second locking bolt 33 with its inner end abutted against the outer side of the right part of the insulating support rod 1 is provided in the second screw hole.

[0053] By setting it like this, when the second locking bolt 33 is loosened, the upper clamping seat 27 can slide up and down along the length direction of the insulating support rod 1, so as to adjust the relative position between the support assembly and the cross arm 2; after the position adjustment is completed, reverse-tighten the second locking bolt 33, and the relative position between the connecting portion and the insulating support rod 1 can be quickly fixed, preventing the upper clamping seat 27 from shifting during use, causing the connecting portion to become loose and affecting the normal use of the support assembly.

[0054] According to requirements, the second locking bolt 33 can be realized by using a plastic head, a plum blossom head or a butterfly hand-tightening bolt in the prior art, and in this embodiment, it can be an engineering plastic hand-tightening bolt with good insulation.

[0055] Embodiment 8: As an optimization of the above embodiments, as shown in the appended Figure 1 , 3 Figure, at least one traction rope fixing portion is respectively provided on the outer side of the upper end and the outer side of the lower end of the insulating rod. Each traction rope fixing portion includes a moving ring 34 and a third locking bolt 35. The inner side of the moving ring 34 is sleeved together with the corresponding position on the outer side of the insulating support rod 1. A convex platform 36 is provided in the middle of the right side of the moving ring 34, a rope-passing hole 37 that penetrates from front to back is provided in the middle of the convex platform 36, a third screw hole that penetrates both inside and outside is provided in the middle of the left side of the moving ring 34, and a third locking bolt 35 with its inner end abutted against the outer side of the left part of the insulating support rod 1 is provided in the third screw hole.

[0056] During the use process, one end of the traction rope can also be tied to the moving ring 34 through the rope-passing hole 37, and the other end is tied to the corresponding position of the upper or lower part of the lead wire. After that, it can effectively prevent the situation that the present invention fails to be fixed in place and falls to the ground, and better protects the personal safety of the operators.

[0057] When the third locking bolt 35 is loosened, the moving ring 34 can slide up and down along the length direction of the insulating support rod 1 to adjust the relative position between the traction rope fixing portion and the upper and lower ends of the lead wire 39 to be replaced; after the position adjustment is completed, reverse-tighten the third locking bolt 35, and the relative position between the moving ring 34 and the insulating support rod 1 can be quickly fixed, preventing the moving ring 34 from shifting during use.

[0058] According to requirements, the boss 36 and the movable ring 34 can be integrally formed, and the movable ring 34 and the boss 36 can be made of insulating materials known in the prior art; the third locking bolt 35 can be realized by a plastic head, a plum head or a butterfly-shaped hand-tightening bolt in the prior art, and in this embodiment, it can be an engineering plastic hand-tightening bolt with good insulation.

[0059] Embodiment 9: As an optimization of the above embodiment, as shown in the attached Figure 1 , 3 As shown, it also includes an anti-dropping end cap 38, and the outer sides of the upper end and the lower end of the insulating support rod 1 are both provided with an anti-dropping end cap 38.

[0060] By such an arrangement, when loosening the third locking bolt 35 and adjusting the relative position between the traction rope fixing part and the lead wire 39 to be replaced, even if the operator makes an error in operation, the anti-drop end cap 38 will block the traction rope fixing part and the lead wire clamp to prevent them from falling to the ground and affecting their use.

[0061] Embodiment 10: A lead fixing method using a live working lead fixing bracket, comprising: selecting one of the leads as the lead to be replaced, performing overall shielding protection on the line, and then completing shielding treatment on the remaining two leads; Adjust the relative positions between the two lead clamps and the insulating bracket according to the lead length so that the two lead clamps can be aligned with the upper and lower positions of the lead 39 to be replaced, that is, first loosen the first nut 6 so that the first stud 5 can slide off from the first notch 10 to the right and separate, then rotate the movable clamp 4 to the left to open, place the rear part of the lead 39 to be replaced in the rear half of the wire groove 9, then rotate the movable clamp 4 in the opposite direction to close it, place the front part of the lead 39 to be replaced in the front half of the wire groove 8, move the first stud 5 again, so that the first stud 5 is re-stuck in the first notch 10, and finally tighten the first nut 6 in the opposite direction to clamp the lead 39 to be replaced by the fixed clamp 3 and the movable clamp 4; According to the position of the cross arm 2, quickly install the support assembly at the corresponding position in the middle of the insulating support rod 1, and finally fix the left part of the support assembly on the cross arm 2 near the position of the lead wire 39 to be replaced.

[0062] In the above technical solution, whether the present invention is first fixedly installed on the cross arm 2, or the present invention is first fixedly installed together with the lead through the lead clamp, the operator can adjust the order according to the actual situation. The above technical solution takes the fixing method of replacing a single lead as an example.

[0063] Through the above technical solution, the problems that a single lead wire cannot be fixed and the fixed point cannot be adjusted correspondingly with the length of the lead wire can be effectively solved. During the use process, after replacing a lead wire, remove this bracket from the cross arm, place the bracket and the replaced lead wire on the ground, disassemble the present invention, and then install the present invention on the next lead wire to be replaced, and then the next lead wire to be replaced can be continued to be replaced. However, multiple of the present inventions can also be set up. After all the lead wires are replaced at one time, then remove the present invention from the replaced lead wires. In this way, the replacement efficiency is higher and the labor intensity of the operators can also be reduced.

[0064] The above technical features respectively constitute the embodiments of the present invention, which have strong adaptability and implementation effects. Non-essential technical features can be increased or decreased according to actual needs to meet the requirements of different situations.

Claims

1. A live working lead fixing bracket, characterized in that It includes an insulating support rod, a support assembly and a lead fixing part. The outer side of the middle part of the insulating support rod and the right end of the support assembly are fixedly installed together through a connecting part. The left part of the support assembly is used to be fixedly connected with the cross arm so as to keep the insulating support rod in a vertical state. The outer side of the upper part and the outer side of the lower part of the insulating rod are both provided with lead clamps. Each lead clamp includes a fixed clamp, a movable clamp, a first stud, a first nut and a slider with an axial through hole, and the inner side of the slider is sleeved together with the outer side of the insulating support rod; a fixed clamp is fixedly installed in the middle of the right side of the slider, and a movable clamp is hinged in the middle of the front side of the fixed clamp, and a front half wire groove opening backwards is provided on the rear side of the left part of the movable clamp, and a rear half wire groove opening forwards is provided on the fixed clamp corresponding to the position of the front half wire groove; a first notch opening to the right and passing through front and back is provided at the right end of the movable clamp, and a second notch opening to the right and passing through front and back is provided at the right end of the fixed clamp corresponding to the position of the first notch, and a first stud with a front part located in the first notch is rotatably installed in the second notch, and a first nut with a rear end abutting against the corresponding position of the front side of the movable clamp is provided at the front end of the first stud.

2. The live working lead fixing bracket according to claim 1, characterized in that: The supporting assembly includes an insulating cross bar, a fixed clamp plate, an insulating sleeve, a movable clamp plate, a clamping spring and an insulating end cover with an opening to the left and an axial through hole in the middle. The right end of the insulating cross bar is fixedly installed together with the middle of the left side of the connecting part. A fixed clamp plate is fixedly installed on the outer side of the left part of the insulating cross bar, and an L-shaped clamp plate is fixedly installed on the lower side of the left end of the fixed clamp plate. An anti-slip baffle is provided on the upper side of the right end of the L-shaped clamp plate, and a lower clamping opening is formed between the left side of the anti-slip baffle and the inner side of the lower end of the L-shaped clamp plate; an insulating sleeve is sleeved on the outer side of the insulating cross bar corresponding to the right position of the fixed clamp plate Tube, an active clamp is fixedly installed on the outer side of the left end of the insulating sleeve, a right clamp is provided on the lower side of the active clamp, the upper side of the left part abuts against the lower side of the right part of the fixed clamp, and a right clamp opening is provided on the middle part of the left side of the right clamp, which opens to the left and passes through front and back; a spring mounting inner ring groove is provided on the inner side of the insulating sleeve corresponding to the right side of the active clamp, a clamping spring mounted on the outer side of the insulating cross bar is provided in the spring mounting inner ring groove, an insulating end cover mounted on the outer side of the insulating cross bar is fixedly installed on the outer side of the right end of the insulating sleeve, and the inner side of the right end of the insulating end cover abuts against the right end of the clamping spring.

3. The live working lead fixing bracket according to claim 2, characterized in that: The lead clamp also includes a first locking bolt. A first screw hole is provided in the middle of the left side of the slider, and the first screw hole is provided with a first locking bolt whose inner end abuts against the outer side of the left part of the insulating support rod. Or / and, the insulating cross bar is a telescopic rod.

4. The live working lead fixing bracket according to claim 1, 2 or 3, characterized in that: The connecting part includes a left support, a right support, a second stud and a second nut, a connecting sleeve is fixedly installed on the middle part of the left side of the left support, and the inner side of the connecting sleeve is fixedly installed together with the outer side of the right end of the supporting assembly; a left limiting groove opening to the right and passing through up and down is provided in the middle part of the right side of the left support, a front fixing plate and a rear fixing plate are respectively provided on the front side and the rear side of the lower part of the left support, and the right support is hingedly connected to the middle part of the rear end of the rear fixing plate; a right limiting groove opening to the left and passing through up and down is provided in the middle part of the left side of the right support corresponding to the position of the left limiting groove, and the inner sides of the right limiting groove and the inner sides of the left limiting groove are respectively fitted together with the corresponding positions of the outer side of the middle part of the insulating support rod; a third notch opening forward and passing through left and right is provided in the middle part of the front side of the front fixing plate, and a fourth notch opening forward and passing through left and right is provided at the front end of the right support corresponding to the position of the third notch, a second stud with a left end rotatably installed in the third notch is provided in the fourth notch, and a second nut is provided on the outer side of the right end of the second stud, the left side of which is against the right side of the right support.

5. The live working lead fixing bracket according to claim 4, characterized in that: The connection part also includes an upper clamping seat, and the upper front side and the upper rear side of the left support are both provided with an upper clamping platform, and the outer side of the insulating support rod corresponding to the upper side position of the left support is sleeved with an upper clamping seat, and the upper clamping seat is provided with an upper clamping claw on the lower right side that can abut against the corresponding position on the left side of the upper clamping platform on the front left side and the rear left side; Or / and, the connecting part also includes a second locking bolt, a second screw hole penetrating inside and outside is provided in the middle of the right side of the upper clamping seat, and a second locking bolt with an inner end abutting against the outer side of the right part of the insulating support rod is provided in the second screw hole.

6. The live working lead fixing bracket according to claim 1, 2, 3 or 5, characterized in that: At least one traction rope fixing part is respectively provided on the outer side of the upper end and the outer side of the lower end of the insulating rod, and each traction rope fixing part includes a movable ring and a third locking bolt. The inner side of the movable ring is mounted together with the corresponding position of the outer side of the insulating support rod. A boss is provided in the middle of the right side of the movable ring, and a rope threading hole that passes through the front and back is provided in the middle of the boss. A third screw hole that passes through the inside and outside is provided in the middle of the left side of the movable ring, and a third locking bolt whose inner end abuts against the outer side of the left part of the insulating support rod is provided in the third screw hole.

7. The live working lead fixing bracket according to claim 4, characterized in that: At least one traction rope fixing part is respectively provided on the outer side of the upper end and the outer side of the lower end of the insulating rod, and each traction rope fixing part includes a movable ring and a third locking bolt. The inner side of the movable ring is mounted together with the corresponding position of the outer side of the insulating support rod. A boss is provided in the middle of the right side of the movable ring, and a rope threading hole that passes through the front and back is provided in the middle of the boss. A third screw hole that passes through the inside and outside is provided in the middle of the left side of the movable ring, and a third locking bolt whose inner end abuts against the outer side of the left part of the insulating support rod is provided in the third screw hole.

8. The live working lead fixing bracket according to claim 1, 2, 3, 5 or 7, characterized in that: It also includes anti-dropping end caps, and the outer sides of the upper end and the lower end of the insulating support rod are both provided with anti-dropping end caps.

9. The live working lead fixing bracket according to claim 4 or 6, characterized in that: It also includes anti-dropping end caps, and the outer sides of the upper end and the lower end of the insulating support rod are both provided with anti-dropping end caps.

10. A method for fixing a lead using the live working lead fixing bracket according to any one of claims 1 to 9, characterized in that: include: Select one of the leads as the lead to be replaced, and do a good job of overall shielding protection for the line, and then complete the shielding of the remaining two leads; The relative positions between the two lead clamps and the insulating bracket are adjusted according to the length of the lead, so that the two lead clamps can be respectively aligned with the upper and lower positions of the lead to be replaced, that is, first loosen the first nut so that the first stud can slide off from the first notch to the right and separate, then rotate the movable clamp to the left to open, and place the rear part of the lead to be replaced in the rear half of the wire groove, then rotate the movable clamp in the opposite direction to close the movable clamp, so that the front part of the lead to be replaced is placed in the front half of the wire groove, and the first stud is moved again to make the first stud re-engage in the first notch, and finally tighten the first nut in the opposite direction to clamp the lead to be replaced by the fixed clamp and the movable clamp; According to the position of the cross arm, quickly install the support assembly at the corresponding position in the middle of the insulating support rod, and finally fix the left part of the support assembly on the cross arm near the lead to be replaced.

Images