Cable tension detection device

Abstract

The invention provides a cable tension detection device, and relates to the technical field of cable detection, the cable tension detection device comprises a test machine, an upper fixing mechanism, a pull-down test mechanism, a pair of separation mechanisms and a pair of insulation layer test mechanisms, the upper fixing mechanism comprises a manual clamp, a top plate and a clamping block, and the pull-down test mechanism comprises a pull-down test mechanism and a pull-down test mechanism. The top plate is fixedly connected to the inner top end of the testing machine, the manual clamp is fixedly connected to the bottom of the top plate, the clamping block is fixedly connected to the front side of the manual clamp, and the clamping block is arranged beside the clamping end of the manual clamp. The pull-down testing mechanism comprises a first electric clamping jaw, a second electric clamping jaw and a pair of lower plates, the lower plates are fixedly connected to the two movable testing ends of the testing machine, and the first electric clamping jaw and the second electric clamping jaw are fixedly connected to the top ends of the lower plates respectively. And the mechanical performance test of the cable body, the copper wire and the insulating sheath is realized.

Description

Technical Field

[0001] This invention relates to the field of cable testing technology, and in particular to a cable tensile testing device. Background Technology

[0002] Cables are wire products used to transmit electrical energy, information, and realize electromagnetic energy conversion. They mainly consist of one or more insulated cores, as well as a covering layer, a total protective layer, and an outer sheath. Currently, with the application of new materials such as nano-inorganic powders, elastomer toughening agents, and functional additives in cables, tensile testing is required before cables are put into use after production. Cable tensile testing devices are used to test the tensile strength of cables made of new materials and are key equipment to ensure power grid safety. It is necessary to verify whether their mechanical properties meet the standards. This device applies an increasing axial tensile force to a fixed sample, monitors the force change in real time, records the maximum fracture value, and evaluates the mechanical properties of cables containing new materials. This ensures that innovative materials are safe and reliable in practical applications and provides technical support for new material research and development, product quality control, and engineering applications.

[0003] In the existing cable tensile testing process, the mechanical properties of the cable body, copper wire, and insulation must be verified separately to ensure that the entire cable does not break due to local weaknesses during laying and operation. Existing tensile testing machines all have an upper and lower tension structure. First, the outer sheath of the section to be tested is removed manually, and then the insulation layer and copper conductor are removed by machining or chemical peeling. Then, different clamps are used to test each section. Each time the tested layer is changed, it is necessary to re-clamp and center. Testing a single cable is time-consuming, labor-intensive, and inefficient, which cannot meet the needs of rapid, accurate, and batch testing of new material cables. Summary of the Invention

[0004] To address the problems of existing technologies that require manual stripping and layering, multiple clamping operations, are time-consuming and labor-intensive, and have large errors, this invention provides a cable tensile strength testing device.

[0005] The technical solutions provided by the embodiments of the present invention are as follows: An embodiment of the present invention provides a cable tensile testing device, comprising: a testing machine, an upper fixing mechanism, a lower testing mechanism, a separation mechanism, and an insulation layer testing mechanism, wherein the separation mechanism and the insulation layer testing mechanism are each provided in pairs; The upper fixing mechanism includes a manual clamp, a top plate, and a clamping block. The top plate is fixedly connected to the top of the testing machine, the manual clamp is fixedly connected to the bottom of the top plate, and the clamping block is fixedly connected to the front side of the manual clamp, and the clamping block is located next to the clamping end of the manual clamp. When placing the cable, position it in a U-shape at the top of the clamping block; The pull-down test mechanism includes a first electric gripper, a second electric gripper, and a lower plate. A pair of lower plates are provided, and each lower plate is fixedly connected to two moving test ends of the test machine. The first electric gripper and the second electric gripper are respectively fixedly connected to the top of the lower plate. When clamping the cable, one end of the cable is clamped in the first electric gripper, and the insulation layer of the other end of the cable is peeled off and clamped in the second electric gripper. Then, the insulation layer is cut from both sides of the cable by the separation mechanism.

[0006] Furthermore, the separation mechanism includes a cutter, a slider, a side plate, a fixed frame, an upper electric telescopic cylinder, a pressing plate, a pressing spring, and a connecting block, with the components of the two separation mechanisms arranged symmetrically. The fixed frame is fixedly connected to the bottom of the top plate. The sliders are all longitudinally slidably connected to the inside of the fixed frame. The side walls of the fixed frame are all provided with through slots. The connecting block is longitudinally slidably connected to the inside of the through slot. The rear side of the connecting block is fixedly connected to the side wall of the slider. The upper electric telescopic cylinder is fixedly connected to the bottom of the front side of the fixed frame. The output end of the upper electric telescopic cylinder is fixedly connected to the bottom of the slider. The side wall of the slider is provided with a sliding groove. The cutter is laterally slidably connected to the inside of the sliding groove. Two pairs of compression springs are provided. Each pair of compression springs is fixedly connected between the outer wall of the cutter and the inside of the through groove. The side plate is provided inside the fixed frame. The compression plates are all fixedly connected to the side plate near the cutter.

[0007] Furthermore, the cutters are all configured with smooth arc surfaces on opposite sides, the sidewalls of the cutters are in contact with the sidewalls of the side plates, and the top of the extrusion plate is inclined.

[0008] Furthermore, the insulation layer testing mechanism includes a lower electric telescopic cylinder, a test frame, a positioning frame, an insertion plate, a piercing, a clamping motor, a fixing plate, and a T-block; The T-shaped block is fixedly connected to the side wall of the testing machine. The fixing plate is fixedly connected to the top of the T-shaped block. The side wall of the fixing plate has an upward inclined groove, and the top of the upward inclined groove has a straight groove. The lower electric telescopic cylinder is inclinedly and fixedly connected to the side wall of the fixing plate. The test frame is fixedly connected to the output end of the lower electric telescopic cylinder. The positioning frame is laterally slidably connected to the inside of the test frame. The side wall of the positioning frame has a side groove. The insert plate is laterally slidably connected to the inside of the side groove. Several piercings are provided, and several piercings are fixedly connected to the middle of the side wall of the insert plate. A horizontal block is fixedly connected to the side wall of the insert plate. An upper rod is fixedly connected to the bottom of the horizontal block. A bottom plate is laterally slidably connected to the bottom of the side groove. A downward inclined groove is opened through the top of the bottom plate. The upper rod is inserted into the inside of the downward inclined groove. A vertical rod is fixedly connected to the bottom of the bottom plate, and a vertical groove is opened at the bottom of the side groove relative to the position next to the vertical rod.

[0009] Furthermore, the base plate slides towards the side closer to the fixed plate, the insert plate slides towards the cable side, a return spring is fixedly connected between the inner side of the test frame and the side wall of the positioning frame, and a positioning rod is fixedly connected to the inner side of the test frame relative to the position next to the base plate. The positioning frame has a right-angled groove with an inclined surface on its side wall, and the inclined surface of the right-angled groove is located at the bottom.

[0010] Furthermore, the side wall of the positioning frame is provided with a storage groove relative to the bottom of the side groove. An L-shaped clamping plate is rotatably connected to the inside of the storage groove. The clamping motor is fixedly connected to the side wall of the positioning frame, and the output end of the clamping motor passes through the inside of the storage groove and is fixedly connected to the corner of the L-shaped clamping plate.

[0011] Furthermore, each of the clamping sidewalls of the second electric gripper is fixedly connected with a pressing block, and the pressing blocks are inclined on the side closest to each other.

[0012] Furthermore, a side rod is fixedly connected to the side wall of the positioning frame, and a horizontal groove is opened on the side wall of the test frame relative to the side rod. The side end of the side rod passes through the horizontal groove and is inserted into the inside of the straight groove.

[0013] Furthermore, one of the sliders has a top block fixedly connected to both sides of its top end, a top rod fixedly connected to the side wall of each top block, and grooves are provided on both sides of the bottom end of the side wall of the clamping block.

[0014] Furthermore, bolts are threadedly connected to the opposite side of the fixed frame, and the sidewalls of the bolts are rotatably connected to the sidewalls of the side plates, while the side plates are laterally slidably connected to the inside of the fixed frame.

[0015] The beneficial effects of the technical solutions provided in the embodiments of the present invention include at least the following: In this invention, an upper fixing mechanism, a lower testing mechanism, and a separation mechanism are used. When performing tensile testing on a cable, only the insulation layer at one end of the cable needs to be peeled off. Then, the cable is clamped in a U-shape on the clamping block. Subsequently, both ends of the cable are clamped on the first and second electric clamps. Under the operation of the separation mechanism, the insulation layer on half of the cable is automatically cut open. The copper wire is then pulled by the second electric clamp, thus achieving tensile testing of the entire cable and the copper wire without the need for testing personnel to clamp each cable individually. In this invention, by employing an insulation layer testing mechanism, the two cut insulation layers can be clamped from the bottom, and then the insulation layers are pulled down by the lower electric telescopic cylinder to achieve a tensile test on the insulation layers. Thus, the mechanical performance of the cable body, copper wire and insulation sheath can be tested in one clamping operation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a frontal perspective view of the detection device of the present invention.

[0018] Figure 2 This is a schematic diagram of the overall appearance structure of the fixing plate, top plate and bottom plate of the present invention.

[0019] Figure 3 Appendix of the present invention Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0020] Figure 4 This is a partial cross-sectional three-dimensional structural diagram of the test frame and positioning frame of the present invention.

[0021] Figure 5 This is a side perspective structural diagram of the second electric gripper, test frame, and fixing frame of the present invention.

[0022] Figure 6 Appendix of the present invention Figure 5 A magnified schematic diagram of the structure at point B in the middle.

[0023] Figure 7 This is a partial frontal full-section three-dimensional structural diagram of the fixed frame of the present invention.

[0024] Figure 8 This is a three-dimensional structural diagram of the connecting block and sliding block separated from the cutter according to the present invention.

[0025] Figure 9 This is a bottom-view, three-dimensional structural diagram of the insert plate, L-shaped clamping plate, base plate, and positioning rod of the present invention.

[0026] Figure 10 This is a schematic diagram of the three-dimensional structure of the test frame and positioning frame of the present invention, viewed from below.

[0027] Explanation of reference numerals in the attached drawings: 1. Testing machine; 11. Top block; 12. Top rod; 13. Groove; 14. Bolt; 15. Upper rod; 16. Base plate; 17. Lower inclined groove; 18. Vertical rod; 21. Manual clamp; 22. Top plate; 23. Clamping block; 31. First electric gripper; 32. Second electric gripper; 33. Lower plate; 34. Extrusion block; 41. Cutting blade; 42. Slider; 43. Side plate; 44. Fixing frame; 45. 46. ​​Upper electric telescopic cylinder; 47. Extrusion plate; 48. Extrusion spring; 59. Connecting block; 50. Lower electric telescopic cylinder; 51A. Upper inclined groove; 51B. Straight groove; 51. Test frame; 52. Positioning frame; 53. Insert plate; 54. Spike; 55. Clamping motor; 56. Fixing plate; 57. T-block; 58. Horizontal block; 69. Return spring; 60. Positioning rod; 61. L-shaped clamping plate; 62. Right angle groove; 63. Side rod.

[0028] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0029] The technical solutions of the present invention will now be described with reference to the accompanying drawings. It should also be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some well-known technologies. Furthermore, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0030] In practical use, it was found that in the existing cable tensile testing process, the mechanical properties of the cable body, copper wire, and insulation must be verified separately to ensure that the entire cable will not break due to local weaknesses during laying and operation. Existing tensile testing machines are all top-and-bottom tension structures. First, the outer sheath of the section to be tested is removed manually, and then the insulation layer and copper conductor are removed by machining or chemical peeling. Then, different clamps are used to test each section. Each time the tested layer is changed, it is necessary to re-clamp and center. Testing a single cable is time-consuming, labor-intensive, and inefficient, which cannot meet the needs of rapid, accurate, and batch testing of new material cables. To solve the above problems, the following structure was invented.

[0031] like Figures 1 to 10 As shown, an embodiment of the present invention provides a cable tensile testing device, including: a testing machine 1, an upper fixing mechanism, a lower testing mechanism, a separation mechanism, and an insulation layer testing mechanism, wherein the separation mechanism and the insulation layer testing mechanism are each provided in pairs; The upper fixing mechanism includes a manual clamp 21, a top plate 22 and a clamping block 23. The top plate 22 is fixedly connected to the top of the test machine 1, the manual clamp 21 is fixedly connected to the bottom of the top plate 22, and the clamping block 23 is fixedly connected to the front side of the manual clamp 21 and is located next to the clamping end of the manual clamp 21. When placing the cable, position it in a U-shape at the top of the clamping block 23; The pull-down test mechanism includes a first electric gripper 31, a second electric gripper 32 and a lower plate 33. A pair of lower plates 33 are provided, and each lower plate 33 is fixedly connected to the two moving test ends of the test machine 1. The first electric gripper 31 and the second electric gripper 32 are respectively fixedly connected to the top of the lower plate 33. When clamping the cable, one end of the cable is clamped in the first electric gripper 31, and the insulation layer of the other end of the cable is stripped and clamped in the second electric gripper 32. Then, the insulation layer is cut from both sides of the cable by a separation mechanism. The first electric gripper 31 and the second electric gripper 32 are driven by a servo motor to drive the lead screw or gear, which drives the two gripping fingers to open and close synchronously. The clamping force is fed back in real time through the torque-current closed loop and automatically compensated to prevent the cable from slipping or deforming due to overvoltage, thus achieving fast, accurate and non-destructive clamping. The separation mechanism includes a cutter 41, a slider 42, a side plate 43, a fixed frame 44, an upper electric telescopic cylinder 45, a pressing plate 46, a pressing spring 47, and a connecting block 48. The positions of the components between the two separation mechanisms are symmetrically arranged. The fixed frame 44 is fixedly connected to the bottom of the top plate 22. The sliders 42 are all longitudinally slidably connected to the inner side of the fixed frame 44. The side wall of the fixed frame 44 is provided with through slots. The connecting block 48 is longitudinally slidably connected to the inner side of the through slots. The rear side of the connecting block 48 is fixedly connected to the side wall of the slider 42. The upper electric telescopic cylinder 45 is fixedly connected to the bottom front side of the fixed frame 44. The output end of the upper electric telescopic cylinder 45 is fixedly connected to the bottom of the slider 42. The side wall of the slider 42 is provided with through slots. The cutter 41 is laterally slidably connected to the inner side of the slots. Two pairs of compression springs 47 are provided. Each pair of compression springs 47 is fixedly connected between the outer wall of the cutter 41 and the inner side of the through slots. The side plate 43 is provided inside the fixed frame 44. The compression plates 46 are all fixedly connected to the side plate 43 near the cutter 41. The cutters 41 are all set with smooth arc surfaces on the side away from each other. The side wall of the cutter 41 is in contact with the side wall of the side plate 43, and the top of the extrusion plate 46 is set at an angle. When conducting tensile tests on the newly developed cable, the cable is first cut at a fixed distance, and the insulation layer at one end of the cable is removed using a stripper. Then, the end of the cable with the insulation removed is clamped in the second electric clamp 32. The cable is then passed between the clamping block 23 and the clamping end of the manual clamp 21, so that the other end of the clamping block 23 is clamped around the first electric clamp 31. The manual clamp 21 is then pressed to clamp the cable between the clamping end of the manual clamp 21 and the clamping block 23. (The manual clamp 21, by pressing down the handle, pushes the single-sided wedge slider forward along the inclined plane, forcing the clamping fingers to clamp in one direction, which has an anti-loosening function, realizing clamping with one press and releasing with one release, which is quick to operate and suitable for one-handed quick clamping of cables.) Then, the electric telescopic cylinder 45 is activated to pull the connecting block 48 and the slider 42 downward in the fixed frame 44. During this process, the cutter 41 will move downward together. Since the cutter 41 can only slide laterally in the slider 42, when the side of the cutter 41 moves to the inclined surface of the extrusion plate 46, the inclined surface of the extrusion plate 46 will press the arc surface of the cutter 41, causing the cutter 41 to slide into the corresponding cable insulation layer on the side closer to the other side and compress the extrusion spring 47. Then, as the slider 42 and the cutter 41 continue to move downward, the cable insulation layer is divided into two. During this process, the side of the cutter 41 slides on the side wall of the extrusion plate 46. Finally, after the cutter 41 moves to the bottom and completely cuts the cable insulation layer, the test machine 1 can be controlled to start and drive the two lower plates 33 to move downward, thereby driving the first electric gripper 31 and the second electric gripper 32 to move downward, thereby driving the clamped cable body and copper wire to move downward, realizing the tensile force detection of the cable body and copper wire. During the test, a high-precision strain gauge load sensor is installed on the test machine 1 to measure the applied load of the two moving ends in real time. The servo motor encoder or external displacement ruler synchronously records the elongation of the gauge section. The two signals are sent to the controller through the A / D module. The software automatically removes the inertial peak according to the algorithm, calculates the maximum force, tensile strength, elongation at break, and plots the curve.

[0032] In summary, through the design of the above structure, when performing tensile testing on cables, it is only necessary to peel off the insulation layer at one end of the cable, then clamp the cable in a U-shape on the clamping block 23, and then clamp both ends of the cable on the first electric gripper 31 and the second electric gripper 32. Under the operation of the separation mechanism, the insulation layer on half of the cable can be automatically cut open, and the copper wire can be pulled by the second electric gripper 32 to achieve the tensile test of the entire cable and the copper wire, without the need for testing personnel to clamp each cable individually.

[0033] Based on the above embodiments, it was found during use that the above structure can only achieve tensile testing of the copper wire and the cable as a whole. After the test, the tester also needs to perform tensile testing on the insulation layer, which requires clamping. To solve the above problems, the above structure has been further improved.

[0034] The insulation layer testing mechanism includes a lower electric telescopic cylinder 51, a test frame 52, a positioning frame 53, an insertion plate 54, a piercing bar 55, a clamping motor 56, a fixing plate 57, and a T-block 58. T-block 58 is fixedly connected to the side wall of testing machine 1. Fixing plate 57 is fixedly connected to the top of T-block 58. An upper inclined groove 51A is formed through the side wall of fixing plate 57. A straight groove 51B is formed at the top of the upper inclined groove 51A. Lower electric telescopic cylinder 51 is inclinedly fixedly connected to the side wall of fixing plate 57. Test frame 52 is fixedly connected to the output end of lower electric telescopic cylinder 51. Positioning frame 53 is laterally slidably connected to the inside of test frame 52. Side groove is formed through the side wall of positioning frame 53. Insert plate 54 is laterally slidably connected to the inside of test frame 52. The movable connection is inside the side groove. Several piercings 55 are provided. Several piercings 55 are fixedly connected to the middle of the side wall of the insert plate 54. A horizontal block 59 is fixedly connected to the side wall of the insert plate 54. An upper rod 15 is fixedly connected to the bottom of the horizontal block 59. A bottom plate 16 is slidably connected to the bottom of the side groove. A lower inclined groove 17 is opened through the top of the bottom plate 16. The upper rod 15 is inserted into the inside of the lower inclined groove 17. A vertical rod 18 is fixedly connected to the bottom of the bottom plate 16. A vertical groove is opened at the bottom of the side groove relative to the position next to the vertical rod 18. The base plate 16 slides towards the side closer to the fixed plate 57, the insert plate 54 slides towards the cable side, a return spring 60 is fixedly connected between the inner side of the test frame 52 and the side wall of the positioning frame 53, and a positioning rod 61 is fixedly connected to the inner side of the test frame 52 relative to the position next to the base plate 16. The side wall of the positioning frame 53 is provided with a right-angled groove 63 with an inclined surface, and the inclined surface of the right-angled groove 63 is located at the bottom. The side wall of the positioning frame 53 has a storage groove relative to the bottom of the side groove. An L-shaped clamping plate 62 is rotatably connected to the inside of the storage groove. The clamping motor 56 is fixedly connected to the side wall of the positioning frame 53. The output end of the clamping motor 56 passes through the inside of the storage groove and is fixedly connected to the corner of the L-shaped clamping plate 62. The clamping sidewalls of the second electric gripper 32 are all fixedly connected with extrusion blocks 34, and the extrusion blocks 34 are inclined on the side closest to each other, and the outer wall of the vertical rod 18 is in contact with the inclined surface of the extrusion block 34. A side rod 64 is fixedly connected to the side wall of the positioning frame 53, and a horizontal groove is opened on the side wall of the test frame 52 relative to the side rod 64. The side end of the side rod 64 passes through the horizontal groove and is inserted into the inside of the straight groove 51B. One of the sliders 42 has a top block 11 fixedly connected to both sides of its top end, and a top rod 12 fixedly connected to the side wall of the top block 11. The clamping block 23 has grooves 13 on both sides of its bottom side wall. During the testing of the new material cable, when the insulation stripping end is clamped on the second electric gripper 32, the lateral movement of the clamping end of the second electric gripper 32 will drive the pressing block 34 on the side wall to move. Since the vertical rod 18 can only move laterally in the vertical groove, the movement of the pressing block 34 will cause the inclined surface of the pressing block 34 to press the vertical rod 18 to move in the vertical groove, thereby driving the base plate 16 to move in the side groove. During this process, the lower inclined groove 17 on the base plate 16 will press the upper rod 15 and the horizontal block 59 to move, thereby pushing the insertion plate 54 to move towards the cable side, and at the same time inserting the piercing 55 into the insulation layer of the cable (the pressing distance of the lower inclined groove 17 is limited, so the piercing 55 will not be inserted into the copper wire). Then the vertical rod 18 moves to the side wall of the pressing block 34. At this time, the second electric gripper 32 completes the clamping of the copper wire, and the piercing 55 is inserted into the corresponding insulation layer (at this time, the base plate 16 moves out from the side wall of the positioning rod 61). Then the cutter 41 moves down to cut the insulation layer. At this time, the bottom of the cut insulation layer is inserted into the piercing 55, so it will not move randomly. During the downward movement of the cutter 41 and the slider 42, the top block 11 and the top rod 12 will move downward. After the cutter 41 leaves the insulation layer, the top rod 12 will move into the right angle groove 63 on the positioning frame 53. Since the positioning frame 53 can only slide laterally in the test frame 52, the arc surface of the top rod 12 will press against the inclined surface of the right angle groove 63, causing the positioning frame 53 to slide into the test frame 52. At the same time, the return spring 60 is compressed, and the piercing 55 will pull the insulation layer to both sides. (During this process, the vertical rod 18 continues to move on the side wall of the extrusion block 34, and the bottom plate 16 will move to the side wall of the positioning rod 61. Then, when the vertical rod 18 is removed from the extrusion block 34, the bottom plate 16 will be pressed by the positioning rod 61 and remain stationary.) Subsequently, after the positioning frame 53 is pulled into the test frame 52, the top rod 12 moves out of the right-angle slot 63 and moves to the side of the positioning frame 53. At the same time, the side rod 64 slides to the other end of the horizontal slot and the straight slot 51B, which controls the clamping motor 56 to start and drive the L-shaped clamping plate 62 to flip upward, thereby clamping the insulation layer between the L-shaped clamping plate 62 and the insert plate 54. Finally, the lower electric telescopic cylinder 51 is controlled to start and drive the test frame 52 to move diagonally downward to perform a tensile test on the insulation layer. During this process, the positioning frame 53 will move away from the top rod 12, but because the side rod 64 slides into the upper inclined slot 51A and is restricted, it cannot be reset. Therefore, the positioning frame 53 will move downward with the test frame 52 to pull the insulation layer.

[0035] In summary, the above structural design allows for the clamping of the two cut insulation layers from the bottom. Subsequently, the lower electric telescopic cylinder 51 pulls the insulation layer downwards, enabling a tensile test on the insulation layer. Thus, the mechanical performance of the cable body, copper wire, and insulation can be tested in a single clamping operation.

[0036] Based on the above embodiments, it was found during use that the positions of the side plate 43 and the extrusion plate 46 in the above structure are fixed, so the cutter 41 can only be inserted to a specified depth to cut the insulation layer, which is relatively limited and cannot meet diverse testing needs. In order to solve the above problems, the above structure has been further improved.

[0037] The fixed frame 44 is threaded with bolts 14 on the side away from each other. The sidewalls of the bolts 14 are rotatably connected to the sidewalls of the side plate 43. The side plate 43 is laterally slidably connected to the inside of the fixed frame 44. When it is necessary to adjust the cutting depth of the cutter 41, the side plate 43 is pulled to slide inside the fixed frame 44 by rotating the bolt 14 outward, and the extrusion plate 46 is driven to slide inside the fixed frame 44, thereby adjusting the position of the extrusion cutter 41 and thus completing the adjustment of the cutting depth of the cutter 41.

[0038] In summary, through the design of the above structure, by automatically adjusting the positions of the side plate 43 and the extrusion plate 46 according to the thickness of the cable insulation layer, the insertion depth of the extrusion cutter 41 can be adjusted, which can be used for cable insulation layers of different depths, thus improving the versatility of the device.

[0039] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the preferred embodiments, while those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0040] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A cable tensile strength testing device, characterized in that, It includes a testing machine, an upper fixing mechanism, a lower testing mechanism, a separation mechanism, and an insulation layer testing mechanism, wherein the separation mechanism and the insulation layer testing mechanism are each provided in pairs; The upper fixing mechanism includes a manual clamp, a top plate, and a clamping block. The top plate is fixedly connected to the top of the testing machine, the manual clamp is fixedly connected to the bottom of the top plate, and the clamping block is fixedly connected to the front side of the manual clamp, and the clamping block is located next to the clamping end of the manual clamp. When placing the cable, position it in a U-shape at the top of the clamping block; The pull-down test mechanism includes a first electric gripper, a second electric gripper, and a lower plate. A pair of lower plates are provided, and each lower plate is fixedly connected to two moving test ends of the test machine. The first electric gripper and the second electric gripper are respectively fixedly connected to the top of the lower plate. When clamping the cable, one end of the cable is clamped in the first electric gripper, and the insulation layer of the other end of the cable is peeled off and clamped in the second electric gripper. Then, the insulation layer is cut from both sides of the cable by the separation mechanism.

2. The cable tensile strength testing device according to claim 1, characterized in that, The separation mechanism includes a cutter, a slider, a side plate, a fixed frame, an upper electric telescopic cylinder, a pressing plate, a pressing spring, and a connecting block. The positions of the components between the two separation mechanisms are symmetrically arranged. The fixed frame is fixedly connected to the bottom of the top plate. The sliders are all longitudinally slidably connected to the inside of the fixed frame. The side walls of the fixed frame are all provided with through slots. The connecting block is longitudinally slidably connected to the inside of the through slot. The rear side of the connecting block is fixedly connected to the side wall of the slider. The upper electric telescopic cylinder is fixedly connected to the bottom of the front side of the fixed frame. The output end of the upper electric telescopic cylinder is fixedly connected to the bottom of the slider. The side wall of the slider is provided with a sliding groove. The cutter is laterally slidably connected to the inside of the sliding groove. Two pairs of compression springs are provided. Each pair of compression springs is fixedly connected between the outer wall of the cutter and the inside of the through groove. The side plate is provided inside the fixed frame. The compression plates are all fixedly connected to the side plate near the cutter.

3. The cable tensile strength testing device according to claim 2, characterized in that, The cutters are all set with smooth arc surfaces on the opposite side, the sidewalls of the cutters are in contact with the sidewalls of the side plates, and the top of the extrusion plate is inclined.

4. The cable tensile strength testing device according to claim 1, characterized in that, The insulation layer testing mechanism includes a lower electric telescopic cylinder, a test frame, a positioning frame, an insertion plate, a piercing, a clamping motor, a fixing plate, and a T-block; The T-shaped block is fixedly connected to the side wall of the testing machine. The fixing plate is fixedly connected to the top of the T-shaped block. The side wall of the fixing plate has an upward inclined groove, and the top of the upward inclined groove has a straight groove. The lower electric telescopic cylinder is inclinedly and fixedly connected to the side wall of the fixing plate. The test frame is fixedly connected to the output end of the lower electric telescopic cylinder. The positioning frame is laterally slidably connected to the inside of the test frame. The side wall of the positioning frame has a side groove. The insert plate is laterally slidably connected to the inside of the side groove. Several piercings are provided, and several piercings are fixedly connected to the middle of the side wall of the insert plate. A horizontal block is fixedly connected to the side wall of the insert plate. An upper rod is fixedly connected to the bottom of the horizontal block. A bottom plate is laterally slidably connected to the bottom of the side groove. A downward inclined groove is opened through the top of the bottom plate. The upper rod is inserted into the inside of the downward inclined groove. A vertical rod is fixedly connected to the bottom of the bottom plate, and a vertical groove is opened at the bottom of the side groove relative to the position next to the vertical rod.

5. The cable tensile strength testing device according to claim 4, characterized in that, The base plate slides towards the side closer to the fixed plate, the insert plate slides towards the cable side, a return spring is fixedly connected between the inner side of the test frame and the side wall of the positioning frame, and a positioning rod is fixedly connected to the inner side of the test frame relative to the position next to the base plate. The positioning frame has a right-angled groove with an inclined surface on its side wall, and the inclined surface of the right-angled groove is located at the bottom.

6. The cable tensile strength testing device according to claim 4, characterized in that, The positioning frame sidewall has a storage groove relative to the bottom of the side slot. An L-shaped clamping plate is rotatably connected to the inside of the storage groove. The clamping motor is fixedly connected to the positioning frame sidewall. The output end of the clamping motor passes through the inside of the storage groove and is fixedly connected to the corner of the L-shaped clamping plate.

7. The cable tensile strength testing device according to claim 1, characterized in that, The clamping sidewalls of the second electric gripper are all fixedly connected with extrusion blocks, and the extrusion blocks are inclined on the side closest to each other.

8. The cable tensile strength testing device according to claim 4, characterized in that, The positioning frame is fixedly connected to a side rod, and the test frame side wall is provided with a horizontal groove at a position relative to the side rod. The side end of the side rod passes through the horizontal groove and is inserted into the inside of the straight groove.

9. The cable tensile strength testing device according to claim 2, characterized in that, One of the sliders has a top block fixedly connected to both sides of its top end, and a top rod fixedly connected to the side wall of each top block. The clamping block has grooves on both sides of its bottom side wall.

10. The cable tensile strength testing device according to claim 2, characterized in that, The fixed frame is threaded with bolts on the side away from each other, and the sidewalls of the bolts are rotatably connected to the sidewalls of the side plates. The side plates are laterally slidably connected to the inside of the fixed frame.

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