A large cross-section conductor structure and manufacturing process

Abstract

This invention discloses a large-section conductor structure, including a central conductor and several outer strands. The central conductor includes a central rod and several inner strands. The central rod is a solid structure and is located at the center. The inner strands are located on the outer periphery of the central rod and are also solid. The central rod has a circular cross-section, and the inner walls of the inner strands are arc-shaped and fit against the outer periphery of the central rod. The outer walls of the inner strands are arc-shaped, resulting in a circular cross-section for the central conductor. Several outer strands are located on the outer periphery of the central conductor and are formed by twisting multiple circular monofilaments. The inner walls of the outer strands fit against the outer walls of the inner strands, and the outer walls of the outer strands are arc-shaped. This invention provides a large-section conductor structure and manufacturing process, resulting in a stable structure, more precise resistance control, and easy adjustment of the conductor's cross-sectional area.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cable, in particular to a large cross-section conductor structure and production process. BACKGROUND

[0002] The conductor is the carrier for transmitting current of power cable, and is an important component for determining the economy and reliability of the cable. The nominal cross-section of high-voltage power cable is 800mm 2 The above uses a split conductor structure to reduce the line loss caused by "skin effect" and "proximity effect".

[0003] The conventional split conductor structure currently includes a circular stranded center conductor and a plurality of fan-shaped (or tile-shaped) blocks of the same size and shape, which are arranged closely around the circular stranded center conductor in sequence. Or without a center conductor, it is completely composed of a plurality of blocks. The above structure has the following problems:

[0004] 1. The structure is unstable due to insufficient center support (the stranded conductor is prone to loosen after being pulled and extruded), the resistance value is unstable or large due to loose contact when measuring resistance, and the resistivity is increased due to the extruded cold working of the stranded conductor.

[0005] 2. The width and height of the split fan-shaped block are not easy to control, and the slight deviation of the mold after a long time of production can cause the deviation of the size and shape, which in turn affects the precise control of the width and height, and the deviation of the width and height will affect the weight and the roundness after splicing, and affect the resistance during testing.

[0006] 3. The size of the split conductor is not easy to adjust. SUMMARY

[0007] In view of the deficiencies and defects of the prior art, the present application provides a large cross-section conductor structure and production process, which is stable in structure, more accurate in resistance control, and convenient to adjust the cross-sectional area of the conductor.

[0008] To achieve the above object, the present application provides the following technical solutions.

[0009] A large cross-section conductor structure comprises a center conductor and a plurality of outer layer strands, the center conductor comprises a center rod and a plurality of inner layer strands, the center rod is a solid structure and is arranged at the center, the inner layer strands are arranged at the outer periphery of the center rod, the inner layer strands are solid structures, the cross-section of the center rod is circular, the inner wall of the inner layer strands is arc-shaped, the inner wall of the inner layer strands is fitted with the outer periphery of the center rod, and the outer wall of the inner layer strands is arc-shaped, so that the cross-section of the center conductor is circular, a plurality of the outer layer strands are arranged at the outer periphery of the center conductor, the outer layer strands are formed by twisting a plurality of round monofilaments, the inner wall of the outer layer strands is fitted with the outer wall of the inner layer strands, and the outer wall of the outer layer strands is arc-shaped.

[0010] The large cross-section conductor structure has the advantages that the cross-section area of the large cross-section conductor structure is 800mm 2 The conductor structure has the advantages that the center rod is arranged as a solid structure, the fitting between the center rod and the inner layer strands is more compact, the structure is more compact, the structure is prevented from being loose due to traction and bending, the resistance control is more accurate after the structure is more stable, the solid structure has more excellent resistivity, the resistivity is not increased due to the stretching deformation caused by the tight twisting of the conductor, and the final cross-section area of the conductor can be adjusted by arranging the inner layer strands and the outer layer strands.

[0011] A manufacturing method of the conductor structure comprises the following steps:

[0012] S1. conductor design;

[0013] S11. determining the size of the conductor according to the required conductor current-carrying area;

[0014] S12. determining the size of the center conductor and the size of the outer layer strands according to the size of the conductor, calculating the cross-sectional area of each outer layer strand through the filling factor and the compression rate, and further calculating the arc radius of the inner wall and the outer wall of each outer layer strand;

[0015] S13. determining the size of the center rod and the size of the inner layer strands according to the size of the center conductor, calculating the cross-sectional area of each inner layer strand through the filling factor and the compression rate, and further calculating the arc radius of the inner wall and the outer wall of each inner layer strand;

[0016] S2. conductor production;

[0017] S21. first twisting a plurality of round monofilaments into outer layer strands with corresponding sizes through a twisting device;

[0018] S22. a plurality of inner layer strands and a center rod enter a first cabling device, and the inner layer strands are twisted around the center rod axis through the first cabling device to form a center conductor;

[0019] S23. The plurality of outer layer strands and the center conductor enter into a first cabling device, and the outer layer strands are axially stranded around the center conductor by a second cabling device to form a final large-section conductor structure.

[0020] As an improvement of the present application, in step S22, the inner layer strands are rotated while being axially stranded around the center rod, and the rotation direction of the inner layer strands is the same as the stranding direction.

[0021] As an improvement of the present application, in step S22, the center rod first passes through a tension device and a straightening device in sequence before entering into the first cabling device, the tension of the center rod is adjusted by the tension device, and the center rod is straightened by the straightening device, so that the center rod can enter into the first cabling device straightly.

[0022] As an improvement of the present application, the tension device comprises a base and a plurality of tension rods which are arranged on the base in a spaced rotating manner, and the center rod passes around the tension rods before entering into the straightening device, so that the center rod is in a taut state.

[0023] As an improvement of the present application, the straightening device comprises a horizontal straightening mechanism arranged on a horizontal plane and a vertical straightening mechanism arranged on a vertical plane, the horizontal straightening mechanism comprises a horizontal mounting seat and two rows of horizontal straightening wheels arranged on the horizontal mounting seat, the two rows of horizontal straightening wheels are arranged in front and back on the horizontal plane, and the two rows of horizontal straightening wheels have a horizontal straightening gap for the center rod to pass through, the vertical straightening mechanism comprises a vertical mounting seat and two rows of vertical straightening wheels arranged on the vertical mounting seat, the two rows of vertical straightening wheels are arranged in up and down, and the two rows of vertical straightening wheels have a vertical straightening gap for the center rod to pass through, and the center rod enters into the first cabling device in sequence through the horizontal straightening gap and the vertical straightening gap.

[0024] As an improvement of the present application, the horizontal mounting seat is slidably provided with a horizontal adjusting block and a horizontal fastener for locking the horizontal adjusting block, and one row of the horizontal straightening wheels is mounted on the horizontal adjusting block, and the vertical mounting seat is slidably provided with a vertical adjusting block and a vertical fastener for locking the vertical adjusting block, and one row of the vertical straightening wheels is mounted on the vertical adjusting block.

[0025] As an improvement of the present application, the first cabling device has a center stabilizing die matched with the center rod.

[0026] As an improvement of the present application, in step S23, the outer layer strands first pass through a guide device before entering into the second cabling device, and the guide device comprises an upper pressing wheel and a lower pressing wheel, and a guide groove matched with the outer layer strands is formed between the upper pressing wheel and the lower pressing wheel.

[0027] As an improvement of the present application, the following steps are further included:

[0028] S24. The tape is set, and the conductor is wrapped with the tape around the outer periphery of the conductor after cabling by a wrapping machine. The wrapping tension of the tape is increased so that the tape is tightly wrapped around the outer periphery of the conductor, and the outer layer blocks are more tightly fitted with each other and with the center conductor.

[0029] As an improvement of the present application, the following steps are further included:

[0030] S3. Conductor detection: The two ends of the conductor are gripped by a clamp, and the conductor is tightly tied by a glass fiber tape. The conductor is cut for sampling, and the sample is detected for relevant data.

[0031] As an improvement of the present application, the side walls of the outer layer blocks are provided with corrugated paper for insulation.

[0032] As an improvement of the present application, two to three progressive arc-shaped grooves are used on the guide rod. The progressive change of the arc-shaped grooves enables the corrugated paper to be stably formed before entering the parallel line die. The design of the arc-shaped grooves on the guide rod enables the arc surface of the lower part of the corrugated paper to match and fit with the arc surface of the profiled conductor outside the copper rod, and the average width of the two sides to fit between the outer layer blocks. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a schematic diagram of the cross-sectional structure of the conductor of the present application.

[0034] Figure 2 is a schematic diagram of the manufacturing process of the center conductor of the present application.

[0035] Figure 3 is a schematic diagram of the manufacturing process of the final large cross-section conductor of the present application.

[0036] Figure 4 is a schematic diagram of the structure of the guide device of the present application.

[0037] Figure 5 is a schematic diagram of the structure of the tension device of the present application.

[0038] Figure 6 is a schematic diagram of the structure of the horizontal straightening mechanism and the vertical straightening mechanism of the present application.

[0039] In the figure, 1 is a conductor; 11 is a center rod; 12 is an inner layer block; 13 is an outer layer block; 2 is a guide device; 21 is an upper pressing wheel; 22 is a lower pressing wheel; 23 is a guide groove; 3 is a tension device; 31 is a base; 32 is a tension rod; 4 is a horizontal straightening mechanism; 41 is a horizontal straightening wheel; 42 is a horizontal adjusting block; 43 is a horizontal fastener; 44 is a horizontal mounting seat; 5 is a vertical straightening mechanism; 51 is a vertical straightening wheel; 52 is a vertical adjusting block; 53 is a vertical fastener; and 54 is a vertical mounting seat. DETAILED DESCRIPTION

[0040] The application is further illustrated in conjunction with the accompanying drawings.

[0041] Referring to Figures 1 to 6 The large cross-section conductor structure shown in the drawings, in this application, the large cross-section conductor 1 structure refers to the cross-sectional area of the conductor 1 being 800mm 2 The conductor 1 structure above, the large cross-section conductor 1 structure includes a center conductor 1 and a plurality of outer layer blocks 13, the center conductor 1 includes a center rod 11 and a plurality of inner layer blocks 12, the center rod 11 is a solid structure, the material of the center rod 11 is copper, the center rod 11 is arranged at the center, the inner layer blocks 12 are arranged on the outer periphery of the center rod 11, the cross section of the center rod 11 is circular, the inner wall of the inner layer blocks 12 is arc-shaped, the inner wall of the inner layer blocks 12 is fitted with the outer periphery of the center rod 11, the outer wall of the inner layer blocks 12 is arc-shaped, so that the cross section of the center conductor 1 is circular, a plurality of outer layer blocks 13 are arranged on the outer periphery of the center conductor 1, the inner wall of the outer layer blocks 13 is fitted with the outer wall of the inner layer blocks 12, the outer wall of the outer layer blocks 13 is arc-shaped, so that the overall large cross-section conductor 1 structure is circular, the inner layer blocks 12 are solid structures, and the outer layer blocks 13 are formed by twisting a plurality of round filaments. In this embodiment, the number of inner layer blocks 12 and outer layer blocks 13 is 5.

[0042] The conductor 1 structure of the application, by setting the center rod 11 as a solid structure, the fit between the center rod 11 and the inner layer blocks 12 is tighter, the structure is more compact, preventing the structure from being loose due to traction and bending during manufacturing, the structure is more stable, the control of resistance can be more accurate, at the same time, the combination of the center rod 11 and the inner layer blocks 12 has a filling factor of more than 98%, which is much larger than 85% of the tight-packed blocks, the outer diameter of the conductor 1 process can be reduced by 1-1.5mm compared with the conventional structure, after the outer diameter of the conductor 1 process is reduced, it will also affect the outer diameter of the subsequent processes to the finished product, and the amount of material used for production can be reduced. And the solid structure has more excellent resistivity, and the resistivity is not increased due to the stretching deformation of the tight-packed twisted conductor 1 processing.

[0043] Furthermore, by setting inner strand 12 and outer strand 13, the appropriate dimensions of the center rod 11, inner strand 12, and outer strand 13 can be selected according to the actual requirements for the cross-sectional area of ​​conductor 1. Since the dimensions of the center rod 11 are limited and are generally standard, and since the inner wall of the inner strand 12 needs to fit against the outer wall of the center rod 11, the selection range of the outer wall dimension of the inner strand 12 is relatively small. Therefore, by setting the outer strand 13 around the inner strand 12, the final conductor 1 structure has a wider range of dimension selection and is easier to adjust. By selecting the dimensions of the inner strand 12 and the outer strand 13, the final conductor 1 dimension can meet the actual usage requirements.

[0044] Furthermore, since the inner strand 12 is smaller in size, setting the inner strand 12 as a solid structure can make the structure more compact and stable, and the resistance control can be more precise. The outer strand 13 is larger in size and it is difficult to make it into a solid structure. Therefore, the outer strand 13 is set as a stranded structure, which is convenient for manufacturing.

[0045] This application also discloses a method for manufacturing the aforementioned conductor 1 structure, comprising the following steps:

[0046] S1. Conductor 1 design;

[0047] S11. Determine the dimensions of conductor 1 based on the required current-carrying area of ​​conductor 1;

[0048] S12. Based on the dimensions of conductor 1, determine the dimensions of the center conductor 1 and the outer strand 13. Calculate the cross-sectional area of ​​each outer strand 13 using the filling coefficient and compression ratio, and then calculate the arc radius of the inner and outer walls of each outer strand 13.

[0049] S13. Determine the dimensions of the center conductor 1, the center rod 11, and the inner strand 12. Calculate the cross-sectional area of ​​each inner strand 12 using the filling coefficient and compression ratio, and then calculate the arc radius of the inner and outer walls of each inner strand 12.

[0050] S2. Conductor 1 production;

[0051] S21. First, multiple circular monofilaments are twisted together into an outer layer block 13 of the corresponding size using a twisting device;

[0052] S22. Multiple inner strands 12 and a central rod 11 enter the first cabling equipment, and the inner strands 12 are axially twisted around the central rod 11 by the first cabling equipment to form the central conductor 1;

[0053] Specifically, the center rod 11 first passes through the tension device 3 and the straightening device in sequence before entering the first cable-forming equipment. The tension device 3 adjusts the tension of the center rod 11, and the straightening device ensures that the center rod 11 can enter the first cable-forming equipment in a straight line.

[0054] See Figure 5 As shown, the tension device 3 includes a base 31 and a plurality of tension rods 32 rotatably disposed on the base 31 at intervals. Depending on the tension state of the central rod 11, the central rod 11 passes around the corresponding tension rod 32, so that the central rod 11 is in a taut state before entering the straightening device.

[0055] See Figure 6 As shown, the straightening device includes a horizontal straightening mechanism 4 disposed on a horizontal plane and a vertical straightening mechanism 5 disposed on a vertical plane. The horizontal straightening mechanism 4 includes a horizontal mounting base 44 and two rows of horizontal straightening wheels 41 disposed on the horizontal mounting base 44. The two rows of horizontal straightening wheels 41 are arranged front to back on the horizontal plane, and there is a horizontal straightening gap between the two rows of horizontal straightening wheels 41 for the center rod 11 to pass through. The vertical straightening mechanism 5 includes a vertical mounting base 54 and two rows of vertical straightening wheels 51 disposed on the vertical mounting base 54. The two rows of vertical straightening wheels 51 are arranged vertically, and there is a vertical straightening gap between the two rows of vertical straightening wheels 51 for the center rod 11 to pass through. The center rod 11 passes through the horizontal straightening gap and the vertical straightening gap in sequence to enter the first cable forming equipment.

[0056] The straightening device includes a horizontal straightening mechanism 4 disposed on a horizontal plane and a vertical straightening mechanism 5 disposed on a vertical plane. The horizontal straightening mechanism 4 includes a horizontal mounting base 44 and two rows of horizontal straightening wheels 41 disposed on the horizontal mounting base 44. Each row of horizontal straightening wheels 41 has a plurality of wheels, and the two rows of horizontal straightening wheels 41 are arranged front to back, with a horizontal straightening gap between the two rows of horizontal straightening wheels 41 for the central rod 11 to pass through. The vertical straightening mechanism 5 includes a vertical mounting base 54 and two rows of vertical straightening wheels 51 disposed on the vertical mounting base 54, and the two rows of vertical straightening wheels 51 are arranged vertically, with a vertical straightening gap between the two vertical straightening wheels 51 for the central rod 11 to pass through. The central rod 11 passes through the horizontal straightening gap and the vertical straightening gap sequentially into the first cabling equipment. The first cabling equipment has a central stabilizing mold that engages with the central rod 11. The horizontal straightening mechanism 4 and the vertical straightening mechanism 5 ensure that the center rod 11 enters the first cabling equipment in a straight line, thereby ensuring the fit between the inner strand block 12 and the center rod 11 and the roundness of the center conductor 1, and reducing the impact on the resistance measurement.

[0057] A horizontal adjusting block 42 and a horizontal fastener 43 for locking the horizontal adjusting block 42 are slidably provided on the horizontal mounting base 44. A row of horizontal straightening wheels 41 are installed on the horizontal adjusting block 42. In this embodiment, the horizontal fastener 43 is a screw. By adjusting the front and rear positions of the horizontal adjusting block 42, the size of the horizontal straightening gap between the two rows of horizontal straightening wheels 41 can be adjusted, and it is fixed by the horizontal fastener 43, so as to ensure that the horizontal straightening gap can always cooperate with the center rod 11, thereby straightening the center rod 11.

[0058] The vertical mounting base 54 is slidably provided with a vertical adjustment block 52 and a vertical fastener 53 for locking the vertical adjustment block 52. A row of vertical straightening wheels 51 are mounted on the vertical adjustment block 52. In this embodiment, the vertical fastener 53 is a screw. By adjusting the up and down position of the vertical adjustment block 52, the size of the vertical straightening gap between the two rows of vertical straightening wheels 51 can be adjusted, and fixed by the vertical fastener 53, so as to ensure that the vertical straightening gap can always cooperate with the center rod 11, thereby straightening the center rod 11.

[0059] While the inner strand 12 is axially twisted around the central rod 11, the inner strand 12 also rotates itself in the same direction as the twisting direction. This ensures the fit between the inner strand 12 and the central rod 11.

[0060] S23. Multiple outer strands 13 and the center conductor 1 enter the first cabling device. The outer strands 13 are then axially twisted around the center conductor 1 by the second cabling device to form the final large-section conductor 1 structure. The outer strands 13 first pass through a guide device 2 before entering the second cabling device. The guide device 2 includes an upper pressure roller 21 and a lower pressure roller 22, with a guide groove 23 between the upper and lower pressure rollers that matches the outer strands 13. The outer strands 13 pass through the guide groove 23 before entering the second cabling device. The upper and lower pressure rollers 21 and 22 tightly adhere to the outer strands 13, preventing them from shifting. This results in more stable control of the width and height of the outer strands 13, more precise weight of the final conductor 1, and better roundness after splicing strands of the same width and height.

[0061] The outer strand 13 has crepe paper for insulation between its sidewalls, which serves to separate eddy currents. Two to three progressive arc grooves are used on the guide rod. Through the progressive change of the arc grooves, the crepe paper is stably formed before entering the parallel die. The design of the arc grooves on the guide rod makes the arc surface of the lower part of the crepe paper match and fit with the arc surface of the irregular conductor 1 outside the copper rod. At the same time, the width on both sides fits evenly between the outer strand 13.

[0062] S24. Wrapping tape setting: After the conductor 1 is cabled, a wrapping tape is wrapped around the outer periphery of the conductor 1 by a wrapping machine to increase the wrapping tape tension so that the wrapping tape is tightly wrapped around the outer periphery of the conductor 1, making the outer strand 13 fit more tightly with each other and with the center conductor 1.

[0063] S3. Conductor 1 Testing: The two ends of conductor 1 are clamped together and tightly bound with fiberglass tape. Conductor 1 is then cut and sampled, and relevant data are analyzed from the sample. For resistance testing, a large-section, clamping mold is used. This mold fits tightly against the outer contour of conductor 1 and is secured with bolts, increasing the contact area and reducing the impact of contact resistance. This results in a superior and more stable testing structure.

[0064] The above description is only a preferred embodiment of the present invention. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of this patent application are included in the scope of this patent application.

Claims

1. A large cross-section conductor structure, characterized by: The center conductor comprises a center rod and a plurality of inner layer strands, the center rod is a solid structure and is arranged at the center, the inner layer strands are arranged at the outer periphery of the center rod, the inner layer strands are solid structures, the cross section of the center rod is circular, the inner wall of the inner layer strands is arc-shaped, the inner wall of the inner layer strands is fitted with the outer periphery of the center rod, and the outer wall of the inner layer strands is arc-shaped, so that the cross section of the center conductor is circular, the plurality of outer layer strands are arranged at the outer periphery of the center conductor, the outer layer strands are formed by twisting a plurality of circular monofilaments, the inner wall of the outer layer strands is fitted with the outer wall of the inner layer strands, and the outer wall of the outer layer strands is arc-shaped. The production process of the large cross section conductor structure comprises the following steps: S1. Conductor design; S11. Determine the size of the conductor according to the required conductor current-carrying area; S12. According to the size of the conductor, determine the arc radius of the outer wall of the outer layer strand, then calculate the cross-sectional area of each outer layer strand through the filling factor and compression rate, and then calculate the arc radius of the inner wall of each outer layer strand and determine the size of the center conductor; S13. According to the size of the center conductor, determine the arc radius of the outer wall of the inner layer strand, then calculate the cross-sectional area of each inner layer strand through the filling factor and compression rate, and then calculate the arc radius of the inner wall of each inner layer strand and determine the size of the center conductor; S2. Conductor production; S21. First, twist a plurality of circular monofilaments into outer layer strands of corresponding sizes through a twisting device; S22. The center rod first passes through a tension device and a straightening device in sequence and then enters a first cabling device, the tension device adjusts the tensioning degree of the center rod, and the straightening device enables the center rod to enter the first cabling device straight, the straightening device comprises a horizontal straightening mechanism arranged on a horizontal plane and a vertical straightening mechanism arranged on a vertical plane, the horizontal straightening mechanism comprises a horizontal mounting seat and two rows of horizontal straightening wheels arranged on the horizontal mounting seat, the two rows of horizontal straightening wheels are arranged in front and back on the horizontal plane, and the horizontal straightening wheels have a horizontal straightening gap for the center rod to pass through between the two rows of horizontal straightening wheels, the vertical straightening mechanism comprises a vertical mounting seat and two rows of vertical straightening wheels arranged on the vertical mounting seat, the two rows of vertical straightening wheels are arranged in up and down, and the vertical straightening wheels have a vertical straightening gap for the center rod to pass through between the two rows of vertical straightening wheels, the center rod enters the first cabling device through the horizontal straightening gap and the vertical straightening gap in sequence; A plurality of inner layer strands and a center rod enter the first cabling device and are axially twisted around the center rod by the first cabling device to form a center conductor; while the inner layer strands are axially twisted around the center rod, the inner layer strands also rotate, and the rotation direction of the inner layer strands is the same as the twisting direction. S23. The plurality of outer layer strands and the center conductor enter into a first cabling device, and the outer layer strands are axially stranded around the center conductor by a second cabling device to form a final large-section conductor structure; the outer layer strands pass through a guide device first and then enter into the second cabling device, the guide device comprises an upper pressing wheel and a lower pressing wheel, and a guide groove matched with the outer layer strands is formed between the upper pressing wheel and the lower pressing wheel; the outer layer strands pass through the guide groove first and then enter into the second cabling device, and the upper pressing wheel and the lower pressing wheel are tightly combined with the outer layer strands to prevent the outer layer strands from moving, so that the width and height of the outer layer strands are more stable, the weight of the final conductor is more accurate, and the roundness after the same width and height strands are spliced is better; The side walls of the outer layer strands are provided with corrugated paper for insulation, which plays a role in separating eddy current, two to three progressive arc grooves are arranged on the guide rod, the progressive change of the arc grooves enables the corrugated paper to be stably formed before entering the doubling die, and the arc surface of the lower part of the corrugated paper is matched and combined with the arc surface of the special-shaped conductor outside the copper rod through the design of the arc grooves on the guide rod, and the average width of the two sides is combined between the outer layer strands and the outer layer strands; S24. The tape is arranged, and the conductor is wrapped with the tape around the outer periphery of the conductor by a wrapping machine after cabling, the wrapping tape tension is increased to tightly wrap the tape around the outer periphery of the conductor, and the outer layer strands are more tightly combined between the outer layer strands and the outer layer strands and between the outer layer strands and the center conductor. S3. Conductor detection: the two ends of the conductor are tightly held by a clamp, and the conductor is tightly tied by a glass fiber belt, the conductor is cut for sampling, and the sample is detected for related data; in resistance detection, a large-section combined holding die is adopted, the die can be tightly combined with the outer contour of the conductor, a bolt is used for fastening, the contact area is increased, the influence of contact resistance is reduced, and the test structure is more excellent and stable.

2. The production process of a large cross-section conductor structure according to claim 1, characterized in that: The tension device comprises a base and a plurality of tension rods which are arranged on the base in a spaced rotating manner, and the center rod passes around the tension rods and then enters the straightening device, so that the center rod is in a taut state.

3. The production process of a large cross-section conductor structure according to claim 1, characterized in that: The horizontal mounting seat is slidably provided with a horizontal adjusting block and a horizontal fastener for locking the horizontal adjusting block, one row of the horizontal straightening wheels is mounted on the horizontal adjusting block, the vertical mounting seat is slidably provided with a vertical adjusting block and a vertical fastener for locking the vertical adjusting block, and one row of the vertical straightening wheels is mounted on the vertical adjusting block.

Images