Cable resistance testing device and method

Abstract

The invention relates to the technical field of cable resistance testing, and provides a cable resistance testing device and method.The cable resistance testing device comprises a first base, second bases are symmetrically arranged on the two sides of the first base, a multi-stage telescopic rod is installed between the first base and the second bases, and a telescopic assembly is arranged on the first base; the two second bases are each provided with a first mounting assembly, a second mounting assembly and a first supporting table, and the first mounting assemblies, the second mounting assemblies and the first supporting tables are sequentially distributed from far to near away from the first bases. According to the invention, the multi-core cable can be quickly and simply clamped through the mounting assembly I and the mounting assembly II, so that the testing efficiency of the multi-core cable is improved; the base I and the base II are connected through the multi-stage telescopic rod, so that the occupied space of the testing device is reduced, and the base II has a larger space to ensure the distance between the mounting assembly I and the mounting assembly II; meanwhile, when the cable is clamped, an operator can clamp the two ends of the cable at the same time, and the testing efficiency is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cable resistance testing, and specifically to a cable resistance testing device and method. Background Art

[0002] The traditional cable resistance testing method is to cut and sample the cable, place the sampled cable on a test fixture to measure the voltage across the two ends of the cable and the current flowing through the cable, and combine parameters such as the cable length, diameter, test temperature, and humidity to determine whether the cable resistance meets the requirements; most of the existing equipment uses a digital bridge, and the conventional testing method is two-terminal testing, where the resistance tester is connected to both ends of the cable under test through leads for testing. Its characteristic is that the leads are connected to both ends of the cable during the testing process.

[0003] When using a digital bridge, the cable is often clamped by a bridge fixture. However, the existing bridge fixtures have the following disadvantages: 1. The fixture includes a long bottom plate, and there are four copper block fixture current terminals (C1, C2) and voltage terminals (P1, P2) arranged on the long bottom plate. It is necessary to straighten the cable to reduce errors, so it is relatively long in length, increasing the volume, and is not convenient to carry and move; 2. The traditional bridge fixture is designed based on the principle of bridge balance. According to the GB / T 3048.4 standard, the electrode spacing of a four-terminal measurement fixture should be no less than 1.5 times the perimeter of the cross-section of the guide block to ensure uniform current distribution and reduce the edge effect. Manual adjustment is difficult to ensure accuracy and is cumbersome. Moreover, for large cross-section guide blocks, the distance between the fixtures needs to be increased, thus requiring a longer bottom plate, further increasing the volume and length of the equipment; 3. When testing a multi-core cable, it is necessary to test each core wire one by one, resulting in low testing efficiency. Moreover, the non-tested cores need to be short-circuited, and the wiring needs to be frequently changed, making the testing process cumbersome.

[0004] Therefore, the present invention provides a cable resistance testing device and method. Summary of the Invention

[0005] The present invention provides a cable resistance testing device and method, which simplifies the installation steps to solve the problems existing in the background art.

[0006] The technical solution of the present invention is as follows: A cable resistance testing device includes: a first base, two second bases are symmetrically arranged on both sides of the first base, a multi-stage telescopic rod is installed between the first base and the second bases, a telescopic assembly is arranged on the first base, mounting assemblies one, two and a first support platform are arranged on both of the second bases, and the mounting assemblies one, two and the first support platform are distributed in sequence from far to near from the first base, and limiting assemblies are arranged on the telescopic assembly and the top of the first support platform; The first installation component includes a second support platform fixedly connected to the top of the second base. A roller is rotatably connected inside the second support platform. One end of the roller is fixedly connected to a connection disk. A plurality of connecting rods are evenly arranged on one side of the connection disk. One end of each connecting rod is fixedly connected to an installation block. A first clamping component is arranged between two adjacent installation blocks. The first clamping component includes a first clamping block and a second clamping block; The second installation component includes a third support platform fixedly connected to the top of the second base. A turntable is rotatably connected inside the third support platform. A plurality of second clamping components are evenly arranged on the inner side of the turntable. The second clamping component includes two third clamping blocks.

[0007] Preferably, rollers with a self-locking function are installed at the bottom of the second base.

[0008] Preferably, the telescopic component includes a scissor telescopic mechanism installed on the first base. The top of the scissor telescopic mechanism is fixedly connected to a connection platform. A support rod is fixedly connected to the bottom end rotating shaft of the scissor telescopic mechanism. A push rod is slidably connected inside the first base. One end of the push rod extends out of the first base and is fixedly connected to the support rod. The other end of the push rod is threadedly connected to a first threaded rod. One end of the first threaded rod is fixedly connected to a first bevel gear. A rotating rod is rotatably connected inside the first base. One end of the rotating rod is fixedly connected to a second bevel gear, and the second bevel gear meshes with the first bevel gear. The other end of the rotating rod extends out of the first base.

[0009] Preferably, the limiting component includes a bottom block. The bottom blocks of the three limiting components are fixedly connected to the two first support platforms and the connection platform. A first limiting plate and a second limiting plate are arranged on the bottom block. Card strips are arranged on the outer sides of the first limiting plate and the second limiting plate. A first card slot matching the card strip is formed on the bottom block. The first limiting plate and the second limiting plate are rotatably connected to the bottom block through the card strip and the first card slot. One end of the first limiting plate is rotatably connected to one end of the second limiting plate. A second card slot is formed at the other end of the first limiting plate. A clamping block is rotatably connected to the other end of the second limiting plate. The second card slot matches the clamping block. Two second threaded rods are threadedly connected to the first limiting plate. One end of each second threaded rod is located inside the first limiting plate and is rotatably connected to a clamping plate. An expansion rod is arranged between the two clamping plates. Both ends of the expansion rod are rotatably connected to the two clamping plates.

[0010] Preferably, the first clamping assembly includes a U-shaped block. A limiting block is arranged between two ends of the U-shaped block. The limiting block is L-shaped. The first clamping block is rotatably connected to one end of the U-shaped block through a torsion spring. The second clamping block is slidably connected to one end of the limiting block, and one end is located at the top of the other end of the limiting block. One end of the first clamping block is located at the top of the other end of the limiting block. One ends of the first clamping block and the second clamping block located at the top of the other end of the limiting block are both fork-shaped and are cross-distributed. A third threaded rod is rotatably connected between two ends of the U-shaped block, and the second clamping block is threadedly connected to the third threaded rod. A first hollow plate is fixedly connected between two ends of the U-shaped block. One end of the third threaded rod is located inside one end of the first hollow plate and is fixedly connected with a first gear. A second gear is rotatably connected inside the other end of the first hollow plate. A first synchronous belt is installed between the second gear and the first gear.

[0011] Preferably, inclined sliding grooves are formed on opposite sides of adjacent two mounting blocks. Sliders are slidably connected in the inclined sliding grooves. The U-shaped block is located between the two sliders and is fixedly connected with the two sliders. A fourth threaded rod is rotatably connected in one of the inclined sliding grooves of the mounting block. The fourth threaded rod is threadedly connected to the slider, and a motor for driving the fourth threaded rod to rotate is installed in the mounting block. A first guide block is installed at the center of one side of the connecting disc close to the mounting block. A second guide block is installed at one end of the inclined sliding groove inside the mounting block.

[0012] Preferably, the second clamping assembly includes a mounting frame. Two third clamping blocks are slidably connected to the mounting frame. A fifth threaded rod is rotatably connected to the mounting frame, and the third clamping block is threadedly connected to the fifth threaded rod. One end of the third clamping block is fork-shaped, and the two third clamping blocks cross each other. A second hollow plate is fixedly connected to one end of the mounting frame. One end of the fifth threaded rod is located inside one end of the second hollow plate and is fixedly connected with a third gear. A fourth gear is rotatably connected inside the other end of the second hollow plate. A second synchronous belt is installed between the third gear and the fourth gear.

[0013] Preferably, an electric telescopic rod is installed inside the turntable. The output end of the electric telescopic rod is fixedly connected to the mounting frame. An empty groove is formed inside the turntable. A third guide block is arranged inside the empty groove. A spring is installed between the third guide block and the bottom of the empty groove. The third guide block is a multi-stage telescopic block. The output end of the third guide block is fixedly connected to the mounting frame. A fourth guide block is installed at the bottom of the empty groove of the turntable. A fifth guide block is installed at a position of the turntable far from the empty groove.

[0014] Preferably, a fifth gear is fixedly connected to the outer side of the rotating roller inside the second support platform. A toothed ring is arranged on the outer side of the turntable. One ends of a first limiting plate and a second limiting plate located on the first support platform are provided with a first toothed ring and a second toothed ring which are matched with each other. A rotating shaft is rotatably connected inside the second base. A sixth gear, a seventh gear and an eighth gear are fixedly connected to the outer side of the rotating shaft on the first support platform, the second support platform and the third support platform respectively. A third synchronous belt is installed between the fifth gear and the sixth gear inside the second support platform, and the third synchronous belt is meshed with both the fifth gear and the sixth gear. A fourth synchronous belt is installed between the toothed ring and the seventh gear on the third support platform, and the fourth synchronous belt is meshed with both the toothed ring and the seventh gear. A fifth synchronous belt is installed between the second toothed ring and the eighth gear on the first support platform, and the fifth synchronous belt is meshed with both the second toothed ring and the eighth gear.

[0015] A method for testing the resistance of a cable includes the following steps: S1. Remove the insulating skins at both ends of the cable, fix the middle of the cable on the limiting component of the telescopic component, and then lift the middle of the cable upward through the telescopic component; S2. After lifting the cable to a certain height, fix the two ends of the cable with insulating skins on the limiting components on the first support platform respectively, and then clamp a core wire of the cable through the first clamping component and the second clamping component; S3. Continue to rotate the connecting disc and the turntable to clamp the other core wires to complete the installation before the cable resistance test; S4. After the installation is completed, reset the telescopic component and move the second bases on both sides of the first base in opposite directions to straighten the cable, and then move the core wires to the centers of the turntable and multiple installation blocks through the first installation component and the second installation component to straighten the entire test core wire, and then the test can be carried out.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can quickly and simply clamp a multi-core cable through the first installation component and the second installation component, improving the efficiency of multi-core cable testing; and by connecting the first base and the second base through a multi-stage telescopic rod, the occupied space of the testing device is reduced, enabling the second base to have a larger space to ensure the distance between the first installation component and the second installation component without adjustment; at the same time, because the distance between the two second bases is relatively close, when clamping the cable, the operator can clamp both ends of the cable simultaneously, further improving the testing efficiency.

[0017] 2. By moving the C-shaped block from being connected to the second guide block to being connected to the first guide block, with the first guide block connected to the C1 terminal of the digital bridge and the second guide block grounded, when the first clamping assembly moves to the center of multiple mounting blocks, the core wire is connected to the C1 terminal. When the mounting frame moves to the center of the turntable, the third guide block extends and stretches the spring, separates from the fourth guide block and connects to the fifth guide block, the fourth guide block is grounded, and the fifth guide block is connected to the P1 terminal. When the second clamping assembly moves to the center of the turntable, the core wire is connected to the P1 terminal, thus achieving electrical connection when the core wire moves to the center of multiple mounting blocks and the center of the turntable, and other core wires are grounded, eliminating the need for frequent connection changes and further improving the testing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a perspective view of the testing device of the present invention; Figure 2 is a perspective view of the telescopic assembly and the limiting assembly of the present invention; Figure 3 is a sectional perspective view of the limiting assembly of the present invention; Figure 4 is a sectional schematic view of the telescopic assembly of the present invention; Figure 5 is a perspective view of the first mounting assembly of the present invention; Figure 6 is a perspective view of the first clamping assembly of the present invention; Figure 7 is a schematic connection structure view of the first hollow plate of the present invention; Figure 8 is a perspective view of the second mounting assembly of the present invention; Figure 9 is a perspective view of the internal structure of the second mounting assembly of the present invention; Figure 10 is a perspective view of the second clamping assembly of the present invention; Figure 11 is a schematic connection structure view of the second hollow plate of the present invention; Figure 12 is a sectional schematic view of the upper structure of the second base of the present invention.

[0019] In the figure: 1. Base One; 11. Multi-stage telescopic rod; 2. Base Two; 21. Support Platform One; 22. Roller; 23. Synchronous Belt Five; 24. Rotating Shaft; 25. Gear Six; 26. Gear Seven; 27. Gear Eight; 3. Telescopic Assembly; 31. Scissor-type telescopic mechanism; 32. Connecting Platform; 33. Support Rod; 34. Push Rod; 35. Threaded Rod One; 36. Bevel Gear One; 37. Rotating Rod; 38. Bevel Gear Two; 4. Mounting Assembly One; 41. Support Platform Two; 42. Rotating Roller; 43. Connecting Disk; 44. Connecting Rod; 45. Mounting Block; 46. Clamping Assembly One; 461. Clamping Block One; 462. Clamping Block Two; 463. C-shaped Block; 464. Limiting Block; 465. Threaded Rod Three; 467. Hollow Plate One; 468. Gear One; 469. Gear Two; 4610. Synchronous Belt One; 47. Inclined Chute; 48. Slide Block; 49. Threaded Rod Four; 410. Motor; 411. Guide Block One; 412. Guide Block Two; 413. Gear Five; 414. Synchronous Belt Three; 5. Mounting Assembly Two; 51. Support Platform Three; 52. Turntable; 53. Clamping Assembly Two; 531. Clamping Block Three; 532. Mounting Frame; 533. Threaded Rod Five; 534. Hollow Plate Two; 535. Gear Three; 536. Gear Four; 537. Synchronous Belt Two; 54. Electric telescopic rod; 55. Empty Slot; 56. Guide Block Three; 57. Spring; 58. Guide Block Four; 59. Guide Block Five; 510. Tooth Ring; 511. Synchronous Belt Four; 6. Limiting Assembly; 61. Bottom Block; 62. Limiting Plate One; 63. Limiting Plate Two; 64. Card Strip; 65. Card Slot One; 66. Card Slot Two; 67. Card Block; 68. Threaded Rod Two; 69. Clamping Plate; 610. Telescopic Rod; 611. Tooth Ring One; 612. Tooth Ring Two. Detailed implementation mode

[0020] The following further describes in detail the implementation mode of the present invention in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0021] Embodiment 1: As Figures 1 - 12 shown, the present invention provides a cable resistance testing device, including: Base One 1, Base Two 2 is symmetrically arranged on both sides of Base One 1, a multi-stage telescopic rod 11 is installed between Base One 1 and Base Two 2, a telescopic assembly 3 is arranged on Base One 1, mounting assemblies One 4, mounting assemblies Two 5 and support platform One 21 are arranged on both Base Two 2, and the mounting assemblies One 4, mounting assemblies Two 5 and support platform One 21 are distributed in order from far to near from Base One 1, limiting assemblies 6 are arranged on the telescopic assembly 3 and the top of support platform One 21; As Figure 5 、 Figure 6As shown in the figure, the installation component 1-4 includes a support platform 2-41 fixedly connected to the top of the base 2-2. A roller 4-2 is rotatably connected inside the support platform 2-41. One end of the roller 4-2 is fixedly connected to a connection disk 4-3. A plurality of connecting rods 4-4 are evenly arranged on one side of the connection disk 4-3. One end of the connecting rod 4-4 is fixedly connected to a mounting block 4-5. A clamping component 1-46 is arranged between two adjacent mounting blocks 4-5. The clamping component 1-46 includes a clamping block 1-461 and a clamping block 2-462; As Figure 8 、 Figure 9 As shown in the figure, the installation component 2-5 includes a support platform 3-51 fixedly connected to the top of the base 2-2. A turntable 5-2 is rotatably connected inside the support platform 3-51. A plurality of clamping components 2-53 are evenly arranged inside the turntable 5-2. The clamping component 2-53 includes two clamping blocks 3-51.

[0022] As Figures 1 - 12 As shown in the figure, during use, the insulating skins at both ends of the cable are stripped off, and the middle of the cable is fixed on the limiting component 6 of the telescopic component 3. Then, the middle of the cable is lifted upward by the telescopic component 3. After the cable is raised by a certain height, the two ends of the cable with insulating skins are respectively fixed by the limiting component 6 on the support platform 1-21. Then, one core wire of the cable is clamped by the clamping component 1-46 and the clamping component 2-53. The connection disk 4-3 and the turntable 5-2 are continuously rotated to clamp the other core wires, completing the installation before the cable resistance test. After the installation is completed, the telescopic component 3 is reset, and the bases 2-2 on both sides of the base 1-1 are moved in opposite directions, thereby straightening the cable. Then, the core wires are moved to the centers of the turntable 5-2 and the plurality of mounting blocks 4-5 by the installation component 1-4 and the installation component 2-5, thereby straightening the entire test core wire. After that, the test can be carried out.

[0023] As Figure 2 、 Figure 4 As shown in the figure, the telescopic component 3 includes a scissor telescopic mechanism 3-1 installed on the base 1-1. The top of the scissor telescopic mechanism 3-1 is fixedly connected to a connection platform 3-2. A support rod 3-3 is fixedly connected to the bottom end rotating shaft 2-4 of the scissor telescopic mechanism 3-1. A push rod 3-4 is slidably connected inside the base 1-1. One end of the push rod 3-4 extends out of the base 1-1 and is fixedly connected to the support rod 3-3. The other end of the push rod 3-4 is threadedly connected to a threaded rod 1-35. One end of the threaded rod 1-35 is fixedly connected to a bevel gear 1-36. A rotating rod 3-7 is rotatably connected inside the base 1-1. One end of the rotating rod 3-7 is fixedly connected to a bevel gear 2-38, and the bevel gear 2-38 meshes with the bevel gear 1-36. The other end of the rotating rod 3-7 extends out of the base 1-1.

[0024] As Figure 2 、 Figure 3As shown, the limiting component 6 includes a bottom block 61. The bottom blocks 61 on the three limiting components 6 are fixedly connected to the two first support platforms 21 and the connection platform 32. A first limiting plate 62 and a second limiting plate 63 are arranged on the bottom block 61. Clamping strips 64 are arranged on the outer sides of the first limiting plate 62 and the second limiting plate 63. A first clamping groove 65 matching the clamping strip 64 is formed on the bottom block 61. The first limiting plate 62 and the second limiting plate 63 are rotatably connected to the bottom block 61 through the clamping strip 64 and the first clamping groove 65. One end of the first limiting plate 62 is rotatably connected to one end of the second limiting plate 63. A second clamping groove 66 is formed at the other end of the first limiting plate 62. A clamping block 67 is rotatably connected to the other end of the second limiting plate 63. The second clamping groove 66 matches the clamping block 67. Two second threaded rods 68 are threadedly connected to the first limiting plate 62. One end of each second threaded rod 68 is located inside the first limiting plate 62 and is rotatably connected to a clamping plate 69. An expansion rod 610 is arranged between the two clamping plates 69. Both ends of the expansion rod 610 are rotatably connected to the two clamping plates 69.

[0025] Rotate the first limiting plate 62 to open the first limiting plate 62 and the second limiting plate 63, place the cable inside the second limiting plate 63, and then rotate the first limiting plate 62 to close the first limiting plate 62 and the second limiting plate 63, so that the clamping block 67 passes through the second clamping groove 66. Because the clamping block 67 matches the second clamping groove 66, when the clamping block 67 is rotated, the clamping block 67 is blocked by the second clamping groove 66 to fix the first limiting plate 62 and the second limiting plate 63; then rotate the two second threaded rods 68 in sequence. Because the second threaded rods 68 are rotatably connected to the clamping plates 69, and the two clamping plates 69 are connected by the expansion rod 610, the clamping plates 69 can only move vertically. Therefore, rotating the second threaded rods 68 can drive the clamping plates 69 to move downward to cooperate with the second limiting plate 63 to clamp the cable.

[0026] Rotate the rotating rod 37 to drive the first bevel gear 36 to rotate, and drive the second bevel gear 38 and the first threaded rod 35 to rotate through the first bevel gear 36. Because the push rod 34 is threadedly connected to the first threaded rod 35 and the push rod 34 is slidably connected to the first base 1, when the first threaded rod 35 rotates, it drives the push rod 34 to move upward, and pushes the rotating shaft at the bottom end of the scissor expansion mechanism 31 through the support rod 33, so that the scissor expansion mechanism 31 extends, and further lifts the cable on the limiting component 6 upward.

[0027] As Figure 1 shown, the same as the above steps, clamp one end of the cable with an insulating skin through the limiting component 6 on the first support platform 21. The centers of the limiting components 6 on the first support platform 21, the turntable 52, and the multiple mounting blocks 45 are on the same straight line. When fixing the core wires, the distances from multiple core wires to the centers of the mounting blocks 45 and the turntable 52 can be made the same, so as to facilitate straightening the core wires.

[0028] As Figure 6 、 Figure 7As shown, the first clamping assembly 46 includes a U-shaped block 463. A limiting block 464 is arranged between the two ends of the U-shaped block 463. The limiting block 464 is L-shaped. The first clamping block 461 is rotatably connected to one end of the U-shaped block 463 through a torsion spring. The second clamping block 462 is slidably connected to one end of the limiting block 464, and one end is located on the top of the other end of the limiting block 464. One end of the first clamping block 461 is located on the top of the other end of the limiting block 464. One ends of the first clamping block 461 and the second clamping block 462 located on the top of the other end of the limiting block 464 are both fork-shaped and are cross-distributed. A third threaded rod 465 is rotatably connected between the two ends of the U-shaped block 463, and the second clamping block 462 is threadedly connected to the third threaded rod 465. A first hollow plate 467 is fixedly connected between the two ends of the U-shaped block 463. One end of the third threaded rod 465 is located inside one end of the first hollow plate 467 and is fixedly connected with a first gear 468. A second gear 469 is rotatably connected inside the other end of the first hollow plate 467. A first synchronous belt 4610 is installed between the second gear 469 and the first gear 468.

[0029] As Figure 9 , Figure 10 , Figure 11 As shown, the second clamping assembly 53 includes a mounting bracket 532. Two clamping blocks 531 are slidably connected to the mounting bracket 532. A fifth threaded rod 533 is rotatably connected to the mounting bracket 532, and the clamping blocks 531 are threadedly connected to the fifth threaded rod 533. One end of the clamping block 531 is fork-shaped, and the two clamping blocks 531 cross each other. One end of the mounting bracket 532 is fixedly connected with a second hollow plate 534. One end of the fifth threaded rod 533 is located inside one end of the second hollow plate 534 and is fixedly connected with a third gear 535. A fourth gear 536 is rotatably connected inside the other end of the second hollow plate 534. A second synchronous belt 537 is installed between the third gear 535 and the fourth gear 536.

[0030] Then pass the cable through the turntable 52 in the second mounting assembly 5, so that one core wire is located between the two clamping blocks 531. Then pull this core wire to the first clamping assembly 46. The inner diameter of the turntable 52 is smaller than the outer diameter of the mounting block 45. When pulling the core wire to the first clamping assembly 46, the core wire is always in contact with the mounting bracket 532 between the two clamping blocks 531, so that the core wire is always in a straight state. Thus, the distances of multiple core wires from the first clamping assembly 46 to the limiting assembly 6 on the first support table 21 are the same, which is convenient for the core wires to still maintain a straight state when moving the core wires subsequently.

[0031] After that, the core wire is pushed between the first clamping block 461 and the limiting block 464 and abuts against the limiting block 464, so that the positions of multiple core wires during clamping are the same. Since the first clamping block 461 is connected to the limiting block 464 through a torsion spring, the core wire can be preliminarily fixed quickly through the first clamping block 461. The inclination of the first clamping block 461 is greater than that of the limiting block 464, thereby preventing the core wire from shifting. Then, the second gear 469 is rotated by turning the knob connected to the second gear 469, the first gear 468 is driven to rotate through the first synchronous belt 4610, and then the third threaded rod 465 is driven to rotate. Since the second clamping block 462 is threadedly connected to the third threaded rod 465 and is slidably connected to the limiting block 464, the rotation of the third threaded rod 465 drives the second clamping block 462 to move downward, cross the first clamping block 461, and stably fix the core wire.

[0032] Then, the fourth gear 536 is rotated by turning the knob connected to the fourth gear 536, the third gear 535 is driven to rotate through the second synchronous belt 537, and then the fifth threaded rod 533 is driven to rotate. The thread directions at both ends of the fifth threaded rod 533 are opposite. Since the two third clamping blocks 531 are threadedly connected to the fifth threaded rod 533 and the third clamping block 531 is slidably connected to the mounting bracket 532, the rotation of the fifth threaded rod 533 drives the two third clamping blocks 531 to approach and cross each other to clamp the core wire.

[0033] A fifth gear 413 is fixedly connected to the outside of the roller 42 inside the second support table 41. A toothed ring 510 is arranged on the outside of the turntable 52. A first toothed ring 611 and a second toothed ring 612 which are matched are arranged at one ends of the first limiting plate 62 and the second limiting plate 63 located on the first support table 21. A rotating shaft 24 is rotatably connected inside the second base 2. A sixth gear 25, a seventh gear 26 and an eighth gear 27 are fixedly connected to the outside of the rotating shaft 24 at the first support table 21, the second support table 41 and the third support table 51 respectively. A third synchronous belt 414 is installed between the fifth gear 413 and the sixth gear 25 inside the second support table 41, and the third synchronous belt 414 is meshed with both the fifth gear 413 and the sixth gear 25. A fourth synchronous belt 511 is installed between the toothed ring 510 and the seventh gear 26 on the third support table 51, and the fourth synchronous belt 511 is meshed with both the toothed ring 510 and the seventh gear 26. A fifth synchronous belt 23 is installed between the second toothed ring 612 and the eighth gear 27 on the first support table 21, and the fifth synchronous belt 23 is meshed with both the second toothed ring 612 and the eighth gear 27.

[0034] After clamping a core wire, rotate the connection disk 43, which drives the roller 42 to rotate. The fifth gear 413 on the roller 42 drives the third synchronous belt 414 to rotate, which then drives the sixth gear 25 and the rotating shaft 24 to rotate. Thus, the fourth synchronous belt 511 is driven to rotate by the seventh gear 26 on the rotating shaft 24, and then the turntable 52 is driven to rotate by the gear ring 510, further driving the second clamping assembly 53 on the turntable 52 to rotate synchronously with the connection disk 43, that is, synchronously with the first clamping assembly 46 between the connection disk 43 and the mounting block 45. At the same time, the eighth gear 27 on the rotating shaft 24 drives the fifth synchronous belt 23 to rotate, and drives the first limiting plate 62 and the second limiting plate 63 to rotate through the first gear ring 611 and the second gear ring 612, thereby driving the cable to rotate synchronously. After that, the clamping and fixing of the next core wire can be carried out. By making the first clamping assembly 46, the second clamping assembly 53, the first limiting plate 62 and the second limiting plate 63 rotate synchronously, the core wires are prevented from being wound together, which affects the subsequent straightening of the core wires.

[0035] The first limiting plate 62 and the second limiting plate 63 on the two first supporting platforms 21 rotate, and the first limiting plate 62 and the second limiting plate 63 on the telescopic assembly 3 can be driven to rotate through the cable.

[0036] As Figure 12 shown, the second base 2 is installed with rollers 22 having a self-locking function at the bottom.

[0037] After all the multi-core wires are clamped, reset the telescopic assembly 3, push the two second bases 2 to both sides, and straighten the cable between the limiting assemblies 6 on the two first supporting platforms 21. During the straightening process, the first limiting plate 62 and the second limiting plate 63 on the telescopic assembly 3 automatically rotate to eliminate the possible residual resistance of the cable on the telescopic assembly 3 when the limiting assembly 6 on the first supporting platform 21 rotates, and then return to the original position to keep the cable straight. Then, lock the rollers 22 at the bottom of the second base 2 to complete the fixation.

[0038] Through the first mounting assembly 4 and the second mounting assembly 5, the multi-core cable can be clamped quickly and simply, improving the efficiency of multi-core cable testing. And by connecting the first base 1 and the second base 2 through the multi-stage telescopic rod 11, the occupied space of the testing device is reduced, which is convenient for movement. Also, it enables the second base 2 to have a larger space to ensure the distance between the first mounting assembly 4 and the second mounting assembly 5, without the need for constant adjustment. At the same time, because the distance between the two second bases 2 is relatively close, when clamping the cable, the operator can clamp both ends of the cable simultaneously, further improving the testing efficiency.

[0039] Embodiment 2: As Figure 5 、 Figure 6As shown, inclined sliding grooves 47 are formed on the opposite sides of two adjacent mounting blocks 45. A slider 48 is slidably connected in the inclined sliding groove 47. The U-shaped block 463 is located between the two sliders 48 and fixedly connected to the two sliders 48. A fourth threaded rod 49 is rotatably connected in one of the inclined sliding grooves 47 of the mounting block 45. The fourth threaded rod 49 is threadedly connected to the slider 48, and a motor 410 for driving the fourth threaded rod 49 to rotate is installed in the mounting block 45. A first guide block 411 is installed at the center of the side of the connecting disc 43 close to the mounting block 45, and a second guide block 412 is installed at one end of the inclined sliding groove 47 in the mounting block 45.

[0040] As Figure 8 , Figure 9 , Figure 10 shown, an electric telescopic rod 54 is installed in the turntable 52. The output end of the electric telescopic rod 54 is fixedly connected to the mounting frame 532. An empty groove 55 is formed in the turntable 52. A third guide block 56 is arranged in the empty groove 55. A spring 57 is installed between the third guide block 56 and the bottom of the empty groove 55. The third guide block 56 is a multi-stage telescopic block. The output end of the third guide block 56 is fixedly connected to the mounting frame 532. A fourth guide block 58 is installed at the bottom of the empty groove 55 in the turntable 52, and a fifth guide block 59 is installed at a position of the turntable 52 far from the empty groove 55.

[0041] When testing, start the motor 410 to drive the fourth threaded rod 49 to rotate. Since the slider 48 is slidably connected in the inclined sliding groove 47 and threadedly connected to the fourth threaded rod 49, the fourth threaded rod 49 drives the slider 48 to move from one end of the inclined sliding groove 47 to the other end, and makes the first clamping assembly 46 move to the center of the multiple mounting blocks 45. Since the second guide block 412 is installed at one end of the inclined sliding groove 47 in the mounting block 45, and the first guide block 411 is installed at the center of the side of the connecting disc 43 close to the mounting block 45, and the U-shaped block 463, the first clamping block 461, the second clamping block 462, and the limiting block 464 are all conductors, when the U-shaped block 463 moves, it moves from being connected to the second guide block 412 to being connected to the first guide block 411. The first guide block 411 is connected to the C1 end of the digital bridge, and the second guide block 412 is grounded. When the first clamping assembly 46 moves to the center of the multiple mounting blocks 45, the core wire is connected to the C1 end.

[0042] At the same time, start the electric telescopic rod 54 to push the mounting frame 532 to move towards the center of the turntable 52, so that the core wire is located at the center of the turntable 52. Since the mounting frame 532 is fixedly connected to the third guide block 56, and a spring 57 is connected between the third guide block 56 and the empty groove 55. When the mounting frame 532 is located on the turntable 52, the third guide block 56 is pulled by the elastic force of the spring 57 to be connected to the fourth guide block 58. When the mounting frame 532 moves to the center of the turntable 52, the third guide block 56 extends and stretches the spring 57, separates from the fourth guide block 58 and is connected to the fifth guide block 59. The fourth guide block 58 is grounded, and the fifth guide block 59 is connected to the P1 end. When the second clamping assembly 53 moves to the center of the turntable 52, the core wire is connected to the P1 end.

[0043] It should be noted that both the mounting bracket 532 and the third clamping block 531 are conductors.

[0044] Thus, when the core wire is moved to the centers of the multiple mounting blocks 45 and the turntable 52, electrical connection is completed, and other core wires are grounded, eliminating the need for frequent connection replacement and further improving the testing efficiency.

[0045] It should be noted that the slope of the inclined chute 47 enables the first clamping assembly 46 to remain in a straightened state after movement; the mounting bracket 532, the electric telescopic rod 54, the third guide block 56, etc. are all inclined, so that the first clamping assembly 46 still remains in a straightened state after movement.

[0046] It should be noted that the fifth guide block 59 on the other second base 2 is connected to the P2 end, and the first guide block 411 is connected to the C1 end.

[0047] Embodiment Three: A method for testing the resistance of a cable, comprising the following steps: S1. Remove the insulating skins at both ends of the cable, fix the middle of the cable on the limiting assembly 6 of the telescopic assembly 3, and then lift the middle of the cable upward through the telescopic assembly 3; S2. After the cable is lifted to a certain height, fix the two ends of the cable with insulating skins on the limiting assembly 6 on the first support platform 21 respectively, and then clamp one core wire of the cable through the first clamping assembly 46 and the second clamping assembly 53; S3. Continue to rotate the connecting disc 43 and the turntable 52 to clamp the other core wires and complete the installation before the cable resistance test; S4. After the installation is completed, reset the telescopic assembly 3 and move the second bases 2 on both sides of the first base 1 in opposite directions, thereby straightening the cable, and then move the core wire to the centers of the turntable 52 and the multiple mounting blocks 45 through the first mounting assembly 4 and the second mounting assembly 5, so as to straighten the entire test core wire, and then the test can be carried out.

[0048] The embodiments of the present invention are given for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A cable resistance testing device, comprising: A base (1), wherein bases (2) are symmetrically arranged on both sides of the base (1), characterized in that: a multi-stage telescopic rod (11) is installed between the base (1) and the base (2), a telescopic component (3) is arranged on the base (1), and both bases (2) are provided with a mounting component (4), a mounting component (5) and a support platform (21), and the mounting component (4), the mounting component (5) and the support platform (21) are distributed in order from far to near from the base (1), and a limit component (6) is arranged on the telescopic component (3) and the top of the support platform (21); The mounting assembly 1 (4) comprises a supporting platform 2 (41) fixedly connected to the top of the base 2 (2), a roller (42) being rotatably connected inside the supporting platform 2 (41), one end of the roller (42) being fixedly connected to a connecting plate (43), a plurality of connecting rods (44) being evenly arranged on one side of the connecting plate (43), one end of the connecting rod (44) being fixedly connected to a mounting block (45), a clamping assembly 1 (46) being arranged between two adjacent mounting blocks (45), the clamping assembly 1 (46) comprising a clamping block 1 (461) and a clamping block 2 (462); The second mounting assembly (5) comprises a support platform (51) fixedly connected to the top of the second base (2), a turntable (52) being rotatably connected inside the support platform (51), a plurality of second clamping assemblies (53) being evenly arranged inside the turntable (52), the second clamping assembly (53) comprising two clamping blocks (531).

2. The cable resistance testing device according to claim 1, characterized in that: A roller (22) with a self-locking function is installed at the bottom of the second base (2).

3. The cable resistance testing device according to claim 1, characterized in that: The telescopic assembly (3) comprises a scissor-type telescopic mechanism (31) mounted on a base (1); a connecting platform (32) is fixedly connected to the top of the scissor-type telescopic mechanism (31); a support rod (33) is fixedly connected to a rotating shaft at the bottom of the scissor-type telescopic mechanism (31); a push rod (34) is slidably connected inside the base (1); one end of the push rod (34) extends out of the base (1) and is fixedly connected to the support rod (33); the other end of the push rod (34) is threadedly connected to a threaded rod (35); one end of the threaded rod (35) is fixedly connected to a bevel gear (36); a rotating rod (37) is rotatably connected inside the base (1); one end of the rotating rod (37) is fixedly connected to a bevel gear (38); the bevel gear (38) is meshed with the bevel gear (36); the other end of the rotating rod (37) extends out of the base (1).

4. The cable resistance testing device according to claim 3, characterized in that: The limiting component (6) includes a bottom block (61). The bottom blocks (61) on the three limiting components (6) are fixedly connected to the two first support platforms (21) and the connecting platform (32). A first limiting plate (62) and a second limiting plate (63) are arranged on the bottom block (61). Clamping strips (64) are arranged on the outer sides of the first limiting plate (62) and the second limiting plate (63). A first clamping groove (65) matching the clamping strip (64) is formed in the bottom block (61). The first limiting plate (62) and the second limiting plate (63) are rotatably connected to the bottom block (61) through the clamping strip (64) and the first clamping groove (65). One end of the first limiting plate (62) is rotatably connected to one end of the second limiting plate (63). A second clamping groove (66) is formed at the other end of the first limiting plate (62). A clamping block (67) is rotatably connected to the other end of the second limiting plate (63). The second clamping groove (66) matches the clamping block (67). Two second threaded rods (68) are threadedly connected to the first limiting plate (62). One end of each second threaded rod (68) is located inside the first limiting plate (62) and is rotatably connected to a clamping plate (69). An expansion rod (610) is arranged between the two clamping plates (69). Both ends of the expansion rod (610) are rotatably connected to the two clamping plates (69).

5. The cable resistance testing device according to claim 1, characterized in that: The first clamping component (46) includes a U-shaped block (463). A limiting block (464) is arranged between the two ends of the U-shaped block (463). The limiting block (464) is L-shaped. The first clamping block (461) is rotatably connected to one end of the U-shaped block (463) through a torsion spring. The second clamping block (462) is slidably connected to one end of the limiting block (464), and one end of the second clamping block (462) is located above the other end of the limiting block (464). One end of the first clamping block (461) is located above the other end of the limiting block (464). One ends of the first clamping block (461) and the second clamping block (462) located above the other end of the limiting block (464) are both fork-shaped and are cross-distributed. A third threaded rod (465) is rotatably connected between the two ends of the U-shaped block (463), and the second clamping block (462) is threadedly connected to the third threaded rod (465). A first hollow plate (467) is fixedly connected between the two ends of the U-shaped block (463). One end of the third threaded rod (465) is located inside one end of the first hollow plate (467) and is fixedly connected to a first gear (468). A second gear (469) is rotatably connected inside the other end of the first hollow plate (467). A first synchronous belt (4610) is installed between the second gear (469) and the first gear (468).

6. The cable resistance testing device according to claim 5, characterized in that: On the opposite sides of two adjacent ones of the said mounting blocks (45), inclined sliding grooves (47) are respectively formed. A slider (48) is slidably connected in each of the inclined sliding grooves (47). The U-shaped block (463) is located between the two sliders (48) and fixedly connected to the two sliders (48). In one of the inclined sliding grooves (47) of the mounting block (45), a fourth threaded rod (49) is rotatably connected. The fourth threaded rod (49) is in threaded connection with the slider (48). And a motor (410) for driving the fourth threaded rod (49) to rotate is installed in the mounting block (45). At the center of one side of the connecting disk (43) close to the mounting block (45), a first guide block (411) is installed. At one end of the inclined sliding groove (47) inside the mounting block (45), a second guide block (412) is installed.

7. The cable resistance testing device according to claim 1, characterized in that: The second clamping assembly (53) includes a mounting frame (532). Two of the third clamping blocks (531) are slidably connected to the mounting frame (532). A fifth threaded rod (533) is rotatably connected to the mounting frame (532). And the third clamping block (531) is in threaded connection with the fifth threaded rod (533). One end of the third clamping block (531) is fork-shaped, and the two third clamping blocks (531) cross each other. One end of the mounting frame (532) is fixedly connected to a second hollow plate (534). One end of the fifth threaded rod (533) is located inside one end of the second hollow plate (534) and fixedly connected to a third gear (535). A fourth gear (536) is rotatably connected inside the other end of the second hollow plate (534). A second synchronous belt (537) is installed between the third gear (535) and the fourth gear (536).

8. The cable resistance testing device according to claim 7, characterized in that: An electric telescopic rod (54) is installed inside the turntable (52). The output end of the electric telescopic rod (54) is fixedly connected to the mounting frame (532). An empty slot (55) is formed inside the turntable (52). A third guide block (56) is arranged inside the empty slot (55). A spring (57) is installed between the third guide block (56) and the bottom of the empty slot (55). The third guide block (56) is a multi-stage telescopic block. The output end of the third guide block (56) is fixedly connected to the mounting frame (532). A fourth guide block (58) is installed at the bottom of the empty slot (55) of the turntable (52). A fifth guide block (59) is installed on the turntable (52) away from the empty slot (55).

9. The cable resistance testing device according to claim 4, characterized in that: The outer side of the rotating roller (42) is fixedly connected to a gear five (413) in the support platform two (41), the outer side of the rotating disk (52) is provided with a gear ring (510), and the limiting plate one (62) and the limiting plate two (63) located on the support platform one (21) are provided with matching gear rings one (611) and two (612) at one end, and the base two (2) is rotatably connected to a rotating shaft (24), and the outer side of the rotating shaft (24) is fixedly connected to gear six (25), gear seven (26) and gear eight (27) at the support platform one (21), the support platform two (41) and the support platform three (51), and the support platform two (41) is provided with a gear ring (510) in the outer side of the rotating disk (52), and the limiting plate one (62) and the limiting plate two (63) are provided with matching gear rings one (611) and two (612) at one end, and the base two (2) is rotatably connected to a rotating shaft (24), and the outer side of the rotating shaft (24) is fixedly connected to gear six (25), gear seven (26) and gear eight (27) at the support platform one (21), the support platform two (41) and the support platform three (51), and the support platform two (41) is provided with a gear ring (510) in the outer side of the rotating disk (52), and the supporting plate ... A synchronous belt three (414) is installed between gear five (413) and gear six (25), and the synchronous belt three (414) is meshed with gear five (413) and gear six (25); a synchronous belt four (511) is installed between the gear ring (510) and gear seven (26) on the support platform three (51), and the synchronous belt four (511) is meshed with the gear ring (510) and gear seven (26); a synchronous belt five (23) is installed between the gear ring two (612) and gear eight (27) on the support platform one (21), and the synchronous belt five (23) is meshed with the gear ring two (612) and gear eight (27).

10. A cable resistance testing method applicable to claims 1-9, characterized in that: The following steps are involved: S1. Strip the insulation at both ends of the cable, fix the middle of the cable on the limit assembly (6) on the telescopic assembly (3), and then lift the middle of the cable upwards through the telescopic assembly (3); S2, after the cable is raised to a certain height, the two ends of the cable with insulation are fixed by the limit assemblies (6) on the support platform 1 (21), and then a core wire of the cable is clamped by the clamping assembly 1 (46) and the clamping assembly 2 (53); S3, continue to rotate the connection disk (43) and the rotating disk (52) to clamp the other core wires, and complete the installation before the cable resistance test; S4. After the installation is completed, the telescopic component (3) is reset and the bases (2) on both sides of the base (1) are moved in opposite directions, thereby straightening the cable. Then, the core wire is moved to the center of the turntable (52) and the plurality of mounting blocks (45) by means of the mounting component (4) and the mounting component (5), thereby straightening the entire test core wire, and then the test can be carried out.

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