A cable tensile performance testing device

Abstract

The present invention relates to the technical field of cable performance detection, and specifically proposes a cable tensile performance testing device; comprising a test bench, on which a cable fixing frame is installed, and on which a force-applying assembly for applying a vertical downward pulling force is assembled; and on which a plurality of tensile actuators for performing tensile tests on a plurality of cables are fixed. The device provided by the present invention adopts a method of uniformly applying force to a plurality of cables in the same batch and a plurality of test stations, which greatly reduces the accidental random errors of the test, and the tensile actuator performs flexible fitting and downward pressure stretching on the cables, thereby improving the uniformity of stress distribution and avoiding stress concentration, and adopts an anti-tilt support design to enhance the uniformity of the test direction; in addition, while performing structural performance tests during the bending and stretching process, electrical performance tests can also be performed simultaneously, thereby ensuring the comprehensiveness of the test.

Description

Technical Field

[0001] The invention relates to the technical field of cable performance detection, and specifically proposes a cable tensile performance testing device. Background Art

[0002] The tensile test of a cable usually refers to applying tension to both ends of the cable in a straight line to evaluate its mechanical properties such as tensile strength and elongation at break; however, in actual applications, the cable will not only be subjected to linear tension, but may also experience various forms of stress such as bending and torsion. Therefore, in addition to linear tensile testing, it is also necessary to conduct various forms of tensile mechanical property tests such as bending tensile testing, torsion tensile testing, and repeated bending tensile testing. The cables have been tested in various complex environments and various application scenarios to ensure that the cables can operate safely and reliably under predictable working conditions.

[0003] When cables are used in practice, especially when they are installed in automated equipment, such as cables in robot arms, they will bend and deform repeatedly. Compared with the linear tensile test, which only requires applying tension to the end of the cable, during bending and stretching, the distance between the two ends of the cable, the degree of bending deformation, and the distribution of force application points on the cable will all affect the test results. In the existing test process, when performing bending and stretching tests, the cable will be wrapped around a cylinder of a certain diameter or other shaped mold, and tension will be applied to detect the performance status of the cable. When performing repeated bending and stretching tests, the cable is generally bent back and forth repeatedly. In general, the test process lacks unification and standardization, and the test cannot be performed under conditions that simulate the actual use status of the cable well, which greatly affects the actual test results. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a cable tensile performance testing device, which is used to solve the problems mentioned in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme to achieve: a cable tensile performance testing device, including a test bench, on which a cable fixing frame is installed, and the cable fixing frame includes two sliding frames installed on the test bench horizontally and relatively slidingly, and a plurality of clamping components are fixed on the two sliding frames, and the clamping components on the two sliding frames are divided into a plurality of groups arranged opposite to each other, and the two relatively arranged clamping components in each group are used to fix the cable.

[0006] The test bench is equipped with a force-applying component for applying a vertical downward pulling force; a plurality of stretching actuators for performing tensile tests on a plurality of cables are fixed on the force-applying component, and the plurality of stretching actuators are arranged in a one-to-one correspondence with a plurality of groups of clamp components, and the stretching actuators are located between two corresponding matching clamp components; under the common pulling of the force-applying component, the plurality of stretching actuators synchronously and one-to-one correspond to the downward bending and stretching of the plurality of cables.

[0007] The stretching actuator includes a flexible pressure strip for pressing down the cable and flexibly fitting and pressing the cable, a plurality of elastic pulling rods are hinged on the flexible pressure strip along the length direction, a series plate is hinged between the lower ends of the plurality of elastic pulling rods, a tension sensor is fixed to the bottom end of the series plate, and the other end of the tension sensor is fixed to the force applying component.

[0008] Preferably, two rows of anti-roll bars are hinged on the flexible pressure strip, and the entire row of elastic pull rods are distributed between the two rows of anti-roll bars; the bottom end of the anti-roll bar is horizontally slidably installed on the connecting plate, and when the flexible pressure strip is pressed against the cable line, the anti-roll bar is extended accordingly.

[0009] Preferably, a plurality of hinge shafts are horizontally fixedly installed on the top of the flexible pressure strip, and the plurality of hinge shafts are arranged and distributed in the length direction of the flexible pressure strip; a plurality of elastic pulling rods are installed on the plurality of hinge shafts in a one-to-one correspondence, and the elastic pulling rods include a hinge frame that passes through the bottom of the flexible pressure strip and is hinged at both ends of the hinge shaft, a sliding rod is fixed on the hinge frame, a sleeve is slidably installed on the sliding rod, a tension spring is sleeved on the sleeve, and both ends of the tension spring are respectively fixed on the hinge frame and the sleeve; the bottom end of the sleeve is hinged on the connecting plate.

[0010] Preferably, two of the anti-roll bars are hinged on each of the hinge shafts, and the elastic pull rod located on the same hinge shaft is distributed between the two anti-roll bars; the anti-roll bar includes a telescopic rod, the upper end of the telescopic rod is hinged on the hinge shaft, and a slider is fixed to the lower end of the telescopic rod; two sliding grooves cooperating with the two rows of anti-roll bars are provided on the serial plate, and the slider is slidably installed in the sliding grooves at corresponding positions.

[0011] Preferably, the force-applying assembly includes a lifting plate installed above the test bench surface with a lifting drive; a plurality of the stretching actuators are fixed to the upper end of the lifting plate through tension sensors; and at least one guide rod vertically slidably installed on the lifting plate is fixed to the bottom end of the series plate.

[0012] Preferably, the clamp component includes an articulated seat fixed on the sliding frame and a fixed clamp hinged on the articulated seat, and one end of the cable is clamped and fixed on the fixed clamp.

[0013] Preferably, the fixed chuck comprises an articulated block hinged on an articulated seat, two clamping blocks are horizontally slidably mounted on the articulated block, a bidirectional screw is horizontally rotatably mounted on the articulated block, and the two clamping blocks are threadedly connected to two threaded sections of the bidirectional screw in a one-to-one correspondence.

[0014] Preferably, a pressing groove extending along the length direction is provided at the lower end of the flexible pressure strip, and when the flexible pressure strip presses the cable, the cable is located in the pressing groove.

[0015] Preferably, the opposing surfaces of the two clamping blocks are provided with clamping grooves for embedding the ends of the cable when the cable is clamped.

[0016] The above technical scheme has the following advantages or beneficial effects: the present invention provides a cable tensile performance testing device, which is provided with a cable fixing frame for synchronously fixing and straightening multiple cables, and a tensile actuator is provided corresponding to each cable, and multiple tensile actuators share the same force-applying component; the cables can be tested under the conditions of uniform length, uniform fixing and straightening, and the method of using multiple tensile actuators to perform independent tensile tests on the cables eliminates mutual interference, and the method of using multiple cables in the same batch and multiple test stations to uniformly apply force greatly reduces the accidental random errors of the test, and the tensile actuator is used to flexibly fit and press down the cables to stretch them, thereby improving the uniformity of stress distribution and avoiding stress concentration, and the anti-tilt support design is used to enhance the uniformity of the test direction; in addition, static bending and stretching tests and repeated bending and stretching tests can be performed to detect the performance of the cables under different usage conditions, and while the structural performance test is performed during the bending and stretching process, the electrical performance test can also be performed simultaneously to ensure the comprehensiveness of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention and its features, configurations and advantages will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts throughout the drawings, which are not drawn to scale, with emphasis on illustrating the subject matter of the present invention.

[0018] Figure 1 It is a three-dimensional structural schematic diagram of a cable tensile performance testing device provided by the present invention.

[0019] Figure 2 It is a top view of a cable tensile performance testing device provided by the present invention.

[0020] Figure 3 yes Figure 2 Sectional view of AA.

[0021] Figure 4It is a working state diagram of the tensile actuator performing a downward bending tensile test on a cable fixed between two clamp components.

[0022] Figure 5 yes Figure 4 A partial enlarged view of point B in the middle.

[0023] Figure 6 It is a three-dimensional structural diagram of the stretching actuator.

[0024] In the figure: 1. test bench; 2. cable fixing frame; 21. sliding frame; 22. chuck component; 221. hinge seat; 222. fixed chuck; 223. hinge block; 224. clamping block; 225. bidirectional screw; 3. force application assembly; 31. lifting plate; 32. guide column; 4. stretching actuator; 41. flexible pressure strip; 411. pressure groove; 412. hinge shaft; 42. elastic pulling rod; 421. hinge frame; 422. sliding rod; 423. sleeve; 424. tension spring; 43. anti-roll bar; 431. telescopic rod; 432. slider; 44. series plate; 441. slide groove; 442. guide rod; 45. tension sensor; 5. cable. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] like Figure 1 , Figure 2 and Figure 3As shown, a cable tensile performance testing device comprises a test bench 1, on which a cable fixing frame 2 is installed, the cable fixing frame 2 comprises two sliding frames 21 which are horizontally relatively slidably installed on the test bench 1, the sliding frames 21 can be slidably driven by a hydraulic cylinder, and the hydraulic cylinder can be horizontally installed on the table top of the test bench 1; in this embodiment, four clamping head components 22 are fixed on the top of the two sliding frames 21, the four clamping head components 22 located on a single sliding frame 21 are evenly distributed, and the clamping head components 22 on the two sliding frames 21 are divided into four groups arranged opposite to each other, and the clamping head components 22 arranged opposite to each other in each group are used to fix the cable 5, with a total of four test stations, that is, four cables 5 can be synchronously tested at the same time, before the test, the cable 5 used for testing is randomly intercepted from the cable 5 produced in different batches according to the standard test length, and four batches are synchronously tested to eliminate the influence of randomness on the test results.

[0028] like Figure 3 , Figure 4 and Figure 5 As shown, the clamp component 22 includes an articulated seat 221 welded on the sliding frame 21 and a fixed clamp 222 hinged on the articulated seat 221, and the fixed clamp 222 includes an articulated block 223 hinged on the articulated seat 221, two clamps 224 are horizontally slidably mounted on the articulated block 223, and a bidirectional screw 225 is horizontally rotatably mounted on the articulated block 223, and the two clamps 224 are threadedly connected to the two threaded sections of the bidirectional screw 225 in a one-to-one correspondence. The opposite surfaces of the two clamps 224 are provided with clamping grooves for the ends of the cable 5 to be embedded when the cable 5 is clamped.

[0029] Before the test, the two ends of the four cables 5 to be tested need to be fixed, and the two ends of the cables 5 are fixed on two clamping components 22 arranged oppositely. Specifically, in order to facilitate the fixing of the two ends of the cables 5 of the standard test length, the two sliding racks 21 are first moved close to each other. When fixing one end, one end of the cable 5 is wound on the bidirectional screw 225, and then the bidirectional screw 225 is rotated to drive the two clamping blocks 224 to slide towards each other, and then one end of the cable 5 is clamped in the clamping grooves of the two clamping blocks 224. Then, the above operation is repeated to complete the fixing and clamping of the two ends of the four cables 5 in sequence. After the clamping and fixing are completed, the two sliding racks 21 are made to slide in the opposite direction, and then the four cables 5 to be tested are kept in a horizontal and straight state.

[0030] In the present invention, in addition to testing the structural performance changes of the cable 5 itself when it is bent and deformed, the corresponding electrical performance changes under different tensile deformations can also be tested synchronously, and the stability and reliability of the comprehensive performance of the cable 5 can be tested. In order to facilitate the simultaneous electrical performance testing, both ends of each cable 5 are independently connected to a test circuit with the same standard and configuration. The test circuit is configured with a variety of required electrical data measuring instruments such as a multimeter, a megohmmeter, an LCR meter, etc., which are used to measure electrical data such as voltage, current, resistance, capacitance, etc. in real time. In the test circuit, the electrical data parameters are summarized in real time through the existing data monitoring and acquisition equipment. It should be noted that the configuration of the test circuit can be based on relevant existing technologies and will not be elaborated in detail here.

[0031] like Figure 1 and Figure 3 As shown, the test bench 1 is equipped with a force-applying component 3 for applying a vertical downward pulling force; the force-applying component 3 includes a lifting plate 31 horizontally located above the table top of the test bench 1; a plurality of guide pillars 32 are fixed to the bottom end of the lifting plate 31 by bolts, and the plurality of guide pillars 32 are vertically penetrated and slidably installed on the table top of the test bench 1; in the present embodiment, a hydraulic cylinder (not shown in the figure) is vertically fixed to the bottom end of the table top of the test bench 1 by bolts, and the output end of the hydraulic cylinder is fixed to the bottom end of the lifting plate 31; the hydraulic cylinder can drive the lifting plate 31 to move up and down in steps, and can also drive the lifting plate 31 to move up and down reciprocatingly according to a set frequency. The output control of the hydraulic cylinder is an existing mature technology, and corresponding debugging and installation can be performed.

[0032] like Figure 1 , Figure 3 and Figure 6As shown, four stretching actuators 4 for performing stretching tests on multiple cables 5 are fixed on the lifting plate 31, and the four stretching actuators 4 are arranged in a one-to-one correspondence with the four groups of clamp components 22, and the stretching actuator 4 is centrally arranged between the two corresponding clamp components 22; during the bending stretching test, each stretching actuator 4 is used to independently test the cable 5 fixed between the two clamp components 22 at its position. The stretching actuator 4 includes a flexible pressure strip 41 for pressing down the cable 5 and flexibly fitting and pressing the cable 5. When performing a bending and stretching test, the flexible pressure strip 41 directly presses down to contact the cable 5, and the flexible pressure strip 41 can produce flexible deformation to ensure that the flexible pressure strip 41 can directly produce flexible fitting and pressing with the cable 5 to the greatest extent, thereby improving the extensiveness and uniformity of stress distribution on the cable 5 and avoiding local concentration of stress during stretching and affecting the test effect; it should be noted that the flexible pressure strip 41 is a rubber material. Since the flexible pressure strip 41 will simultaneously produce tensile deformation during testing, in order to improve the overall toughness of the flexible pressure strip 41 and ensure sufficient tensile strength and tear resistance, a flexible metal mesh skeleton can be embedded in the flexible pressure strip 41. During the rubber injection molding process, the flexible metal mesh skeleton is placed in the rubber layer of the flexible pressure strip 41. The metal mesh skeleton can specifically be a stainless steel mesh or a copper mesh. In order to enhance the stability when the cable 5 is vertically pressed down, a pressing groove 411 extending along the length direction is provided at the lower end of the flexible pressure strip 41 . When the flexible pressure strip 41 presses the cable 5 , the cable 5 is located in the pressing groove 411 .

[0033] like Figure 3 , Figure 4 and Figure 6As shown, multiple hinge shafts 412 are horizontally and fixedly installed at the top end of the flexible pressing strip 41, and the multiple hinge shafts 412 are arranged and distributed in the length direction of the flexible pressing strip 41; a resilient tension rod 42 is connected to each hinge shaft 412. The resilient tension rod 42 includes a hinge frame 421 that bypasses below the flexible pressing strip 41 and is hinged at both ends of the hinge shaft 412. The hinge frame 421 is in a U shape. A sliding rod 422 is welded on the hinge frame 421. A sleeve 423 is slidably installed on the sliding rod 422. A tension spring 424 is sleeved on the sleeve 423. Both ends of the tension spring 424 are respectively welded on the hinge frame 421 and the sleeve 423; a connecting plate 44 is horizontally arranged below the flexible pressing strip 41. The bottom ends of the sleeves 423 of the multiple resilient tension rods 42 are jointly hinged on the connecting plate 44. A tension sensor 45 is fixed at the center position of the bottom end of the connecting plate 44 by screws, and the other end of the tension sensor 45 is fixed on the lifting plate 31 by screws; in order to improve the stability of the assembly connection between the stretching actuator 4 and the lifting plate 31, two guide rods 442 are also welded at the bottom end of the connecting plate 44. The two guide rods 442 are equidistantly distributed on both sides of the tension sensor 45, and the two guide rods 442 are vertically slidably installed on the lifting plate 31; the tension sensor 45 is used to monitor and feedback in real time the overall tension of the stretching actuator 4 on the cable 5 during bending and stretching. It should be added that when fixing both ends of the cable 5, the cable 5 needs to be sequentially passed through the multiple hinge frames 421 in the stretching actuator 4 at the corresponding position, so that the cable 5 is located below the flexible pressing strip 41.

[0034] When performing a downward bending and stretching test on the cable 5, the cable 5 is vertically pressed down, which is a vertical unidirectional force application. In order to avoid the flexible pressing strip 41 generating a large lateral tension due to stretching deformation during the test and affecting the test effect, therefore, two anti-tilting rods 43 are respectively and correspondingly hinged on each hinge shaft 412. The resilient tension rods 42 located on the same hinge shaft 412 are distributed between the two anti-tilting rods 43; the anti-tilting rods 43 form two columns, and the two columns of anti-tilting rods 43 are distributed on both sides of the flexible pressing strip 41, enhancing the support on both sides of the flexible pressing strip 41 and largely preventing the generation of tilting tension during the test; the anti-tilting rod 43 includes a telescopic rod 431. The upper end of the telescopic rod 431 is hinged on the hinge shaft 412, and the lower end of the telescopic rod 431 is welded with a slider 432; two sliding grooves 441 that cooperate with the two columns of anti-tilting rods 43 are arranged on the connecting plate 44, and the slider 432 is slidably installed in the sliding groove 441 at the corresponding position.

[0035] After the four cables 5 to be tested are fixed and straightened, the cables 5 can be subjected to downward bending and stretching tests, which can be specifically divided into static bending and stretching tests and repeated bending and stretching tests. In both test processes, the cables 5 need to be pulled by the stretching actuator 4 to complete the downward bending and stretching deformation. Specifically: when the downward bending and stretching deformation is performed, the four stretching actuators 4 are driven by the force-applying component 3 to synchronously descend along with the lifting plate 31. During the descent, the cables 5 relatively enter the pressing groove 411 of the flexible pressure strip 41, and the flexible pressure strip 41 flexibly fits and presses down on the cables 5, causing the cables 5 to produce the following Figure 3 As shown in the downward bending deformation, the flexible pressure strip 41 undergoes tensile deformation simultaneously, and the multiple elastic pull rods 42 produce corresponding inclination and stretching along with the position of the hinge shaft 412 at the connected position. The overall presentation is that the closer the elastic pull rods 42 are to the two sides, the greater the inclination angle relative to the vertical state, and the longer the elongation of the tension spring 424. At the same time, along with the movement of the position of the hinge shaft 412, the hinge shaft 412 synchronously pulls the anti-roll bar 43 to slide adaptively along the slide groove 441, and the anti-roll bar 43 always maintains a vertical state. The closer the anti-roll bar 43 is to the two sides, the greater the elongation of the telescopic rod 431.

[0036] When conducting a static bending tensile test, the contraction amount of the hydraulic cylinder in the force-applying component 3 is gradually increased, thereby gradually increasing the tensile force of the tensile actuator 4 on the cable 5. During the actual test, the hydraulic cylinder can be contracted section by section by equal contraction length. After each contraction, the flexible pressure strip 41 keeps the cable 5 in a static tensile state. After the set time, the hydraulic cylinder contracts again, and observes the appearance of each cable 5 before contraction to determine whether the cable 5 has insulation tearing or even internal core breakage. The test stops when the cable 5 has structural damage.

[0037] When performing repeated bending and stretching tests, the cable 5 used for the fixed test is replaced, and the multiple stretching actuators 4 are driven by the force-applying component 3 to bend and stretch the cable 5 downward. The tension sensor 45 pauses when the tension required for the test, and the hydraulic cylinder is switched to the reciprocating telescopic output state. The cable 5 is reciprocatedly bent and stretched according to the interval start time set for the test until the cable 5 suffers structural fatigue damage, and the number of test cycles at that time is recorded.

[0038] When performing static bending and stretching tests and repeated bending and stretching tests, the electrical data of the cable line 5 can be actually monitored and acquired through the test circuit to test its electrical performance.

[0039] The present invention provides a cable tensile performance testing device, which is provided with a cable fixing frame 2 for synchronously fixing and straightening a plurality of cables 5, and a tensile actuator 4 is provided corresponding to each cable 5, and a plurality of tensile actuators 4 share a same force-applying component 3; the cables 5 can be tested under the conditions of uniform length, uniform fixing and straightening, and the method of using a plurality of tensile actuators 4 to perform independent tensile tests on the cables 5 eliminates mutual interference, and the method of using a plurality of cables in the same batch and a plurality of test stations to uniformly apply force greatly reduces the accidental random errors of the test, and the tensile actuator 4 performs flexible fitting and downward pressing and stretching on the cables 5, thereby improving the uniformity of stress distribution and avoiding stress concentration, and adopts an anti-tilt support design to enhance the uniformity of the test direction; in addition, static bending and stretching tests and repeated bending and stretching tests can be performed to detect the performance of the cables 5 under different usage conditions, and while performing structural performance tests during the bending and stretching process, electrical performance tests can also be performed simultaneously, thereby ensuring the comprehensiveness of the tests.

[0040] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0041] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0042] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can make many possible changes and modifications without departing from the technical solution of the present invention, or modify them into equivalent embodiments with equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A cable tensile performance testing device, comprising a test bench, characterized in that: The test bench is provided with a cable fixing frame, which comprises two sliding frames installed on the test bench in a horizontal and relatively slidable manner, a plurality of clamping components are fixed on the two sliding frames, and the clamping components on the two sliding frames are divided into a plurality of groups arranged opposite to each other, and the two clamping components arranged opposite to each other in each group are used to fix the cables; The test bench is equipped with a force-applying component for applying a vertical downward pulling force; a plurality of stretching actuators for performing a tensile test on a plurality of cables are fixed on the force-applying component, and the plurality of stretching actuators are arranged in a one-to-one correspondence with a plurality of sets of clamp components, and the stretching actuators are located between two corresponding matching clamp components; under the common pulling of the force-applying component, the plurality of stretching actuators are synchronously and one-to-one corresponding to the bending and stretching of the plurality of cables downward; The stretching actuator includes a flexible pressure strip used to press down the cable and flexibly fit and press the cable, a plurality of elastic pulling rods are hinged on the flexible pressure strip along the length direction, a series plate is hinged between the lower ends of the plurality of elastic pulling rods, a tension sensor is fixed to the bottom end of the series plate, and the other end of the tension sensor is fixed to the force application component; A plurality of hinge shafts are horizontally fixedly installed on the top end of the flexible pressure strip, and the plurality of hinge shafts are arranged and distributed in the length direction of the flexible pressure strip. Two rows of anti-roll bars are also hinged on the flexible pressure strip, and two anti-roll bars are hinged on each of the hinge shafts. The elastic pulling rod located on the same hinge shaft is distributed between the two anti-roll bars; the anti-roll bar includes a telescopic rod, the upper end of the telescopic rod is hinged on the hinge shaft, and a slider is fixed to the lower end of the telescopic rod; two slide grooves cooperating with the two rows of anti-roll bars are arranged on the serial plate, and the slider is slidably installed in the slide grooves at corresponding positions.

2. A cable tensile performance testing device according to claim 1, characterized in that: The entire row of elastic pull rods is distributed between the two rows of anti-roll bars; the bottom end of the anti-roll bar is horizontally slidably installed on the series plate, and when the flexible pressure strip is pressed against the cable line, the anti-roll bar is extended accordingly.

3. A cable tensile performance testing device according to claim 1, characterized in that: The multiple elastic pulling rods are installed on multiple hinge shafts in a one-to-one correspondence. The elastic pulling rods include hinged frames that pass under the flexible pressure strip and are hinged at both ends of the hinge shaft. A sliding rod is fixed on the hinged frame. A sleeve is slidably installed on the sliding rod. A tension spring is sleeved on the sleeve. The two ends of the tension spring are respectively fixed on the hinged frame and the sleeve; the bottom end of the sleeve is hinged on the connecting plate.

4. A cable tensile performance testing device according to claim 1, characterized in that: The force-applying assembly includes a lifting plate installed above the test bench surface with a lifting drive; a plurality of the stretching actuators are fixed to the upper end of the lifting plate through tension sensors; and at least one guide rod vertically slidably installed on the lifting plate is fixed to the bottom end of the series plate.

5. A cable tensile performance testing device according to claim 1, characterized in that: The clamp component comprises an articulated seat fixed on the sliding frame and a fixed clamp hinged on the articulated seat, and one end of the cable is clamped and fixed on the fixed clamp.

6. A cable tensile performance testing device according to claim 5, characterized in that: The fixed clamp includes an articulated block hinged on an articulated seat, two clamping blocks are horizontally slidably mounted on the articulated block, a bidirectional screw is horizontally rotatably mounted on the articulated block, and the two clamping blocks are threadedly connected to two threaded sections of the bidirectional screw in a one-to-one correspondence.

7. A cable tensile performance testing device according to claim 1, characterized in that: The lower end of the flexible pressure strip is provided with a pressing groove extending along the length direction. When the flexible pressure strip presses the cable, the cable is located in the pressing groove.

8. A cable tensile performance testing device according to claim 6, characterized in that: The opposite surfaces of the two clamping blocks are both provided with clamping grooves for the ends of the cable to be embedded when the cable is clamped.

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