Tensile-torsion pendulum testing machine and method of using the same

Abstract

The present invention discloses a pulling and torsion pendulum testing machine and a method for using the same, including a test box, a positioning assembly, a pulling and torsion pendulum testing mechanism and a control box, wherein the test box is rotatably provided with a door body, the positioning assembly is arranged in the test box and is used to position the first end of a cable, the pulling and torsion pendulum testing mechanism is arranged in the test box and is used to perform a tensile and torsion pendulum test on the cable, the pulling and torsion pendulum testing mechanism comprises a tensile drive assembly, a torsion drive assembly, a swing drive assembly and a first fixture, the first fixture is connected to the torsion drive assembly and the first fixture is used to position the second end of the cable, the torsion drive assembly is installed on the swing drive assembly through an installation fixture assembly, the swing drive assembly is installed on the tensile drive assembly, the tensile drive assembly is arranged in the test box, and the torsion drive assembly is used to drive the first fixture and the cable positioned in the first fixture to twist. The present invention has the advantages of being able to perform tensile, torsion and swing tests on cables, and being convenient for testing cable performance.

Description

Technical Field

[0001] The invention belongs to the technical field of testing equipment, and in particular relates to a tension-torsion pendulum testing machine and a use method thereof. Background Art

[0002] Cables in the field of new energy may be subjected to rough use during specific use. Therefore, cables in the field of new energy need to simulate rough use conditions for fatigue life tests, so as to provide basic raw data for improving and enhancing product performance. Cables of new energy are mainly tested by torsion pendulum test devices. For example, patent application No. 202222727263.5 discloses a charging gun cable tension and torque tester, including a frame, a tension test mechanism is fixedly installed on one side of the frame, and a torque test mechanism is fixedly installed on the other side of the frame. The tension test mechanism includes a tension rotating device fixedly installed on the frame and a driving device for driving the tension rotating device to move up and down. The driving device includes a driving motor installed in the frame, and the output end of the driving motor passes through the frame and is located below the tension rotating device; a driving disk is fixedly installed on the output end of the driving motor, and a plurality of fixing holes adapted to the output end of the driving motor are eccentrically arranged on the driving disk, and the distance from the center of each fixing hole to the center of the driving disk is not equal; the driving disk is coupled to the tension rotating device. The charging gun cable tension and torque tester can test the tension and torque of the charging gun cable, but its structure is complex and is not suitable for testing cables of larger sizes. Summary of the invention

[0003] In order to solve the deficiencies in the prior art, the present invention provides a pulling and torsion pendulum testing machine and a method for using the same for testing cable performance.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] Tensile-torsion pendulum testing machine, including:

[0006] The test box is rotatably provided with a door body;

[0007] A positioning assembly, disposed in the test box and used to position the first end of the cable;

[0008] A tension-torsion-pendulum test mechanism is arranged in a test box and is used to perform tension and torsion-pendulum tests on cables, the tension-torsion-pendulum test mechanism comprises a tension drive assembly, a torsion drive assembly, a swing drive assembly and a first fixture, the first fixture is connected to the torsion drive assembly and the first fixture is used to position the second end of the cable, the torsion drive assembly is installed on the swing drive assembly through an installation fixture assembly, the swing drive assembly is installed on the tension drive assembly, the tension drive assembly is arranged in the test box, the torsion drive assembly is used to drive the first fixture and the cable positioned in the first fixture to twist, the swing drive assembly is used to drive the torsion drive assembly to swing through the installation fixture assembly so as to drive the first fixture and the cable positioned in the first fixture to swing, the tension drive assembly is used to drive the swing drive assembly to move and then drive the cable in the first fixture to stretch through the installation fixture assembly, the installation fixture assembly is used to install and connect the torsion drive assembly, and the installation fixture assembly is also used as a counterweight for the first fixture; and

[0009] The control box is arranged at one side of the test box and is respectively connected with the stretching drive assembly, the torsion drive assembly and the swing drive assembly.

[0010] Preferably, it also includes a test module, which includes a first test component and a second test component, the first test component and the second test component are respectively arranged in a first fixture and a positioning component, the first test component and the second test component are used to test the continuity of the cable, and the first test component and the second test component are both connected to the control box.

[0011] Preferably, the first clamp includes a first connecting plate, a first side plate, a first connecting rod, a second connecting rod, a third connecting rod, a first positioning member and a second positioning member, one side of the first connecting plate is connected to the torsion drive assembly, and the other side of the first connecting plate is connected to the first side plate through the first connecting rod, the second connecting rod and the third connecting rod, the first connecting rod, the second connecting rod and the third connecting rod are evenly distributed between the first connecting plate and the first side plate, a side of the first positioning member close to the first side plate and a side of the second positioning member close to the first side plate are both fixed to the first side plate, the first positioning member and the second positioning member are arranged correspondingly at upper and lower intervals, a first positioning tooth is provided in the first positioning member, a first clamping member is installed in the second positioning member, a second positioning tooth is provided in the first clamping member, the first positioning tooth and the second positioning tooth are arranged correspondingly up and down, and the first positioning tooth and the second positioning tooth are used to position the second end of the cable;

[0012] The positioning assembly includes a positioning block, a connecting frame, a third positioning member and a fourth positioning member. The positioning block is arranged in the test box, the connecting frame is connected to the positioning block, the third positioning member is arranged on a side of the connecting frame away from the positioning block, the fourth positioning member is located above the third positioning member and is detachably connected to the third positioning member, a third positioning tooth is arranged in the third positioning member, a fourth positioning tooth is arranged in the fourth positioning member, and the third positioning tooth and the fourth positioning tooth are used to position the first end of the cable.

[0013] Preferably, the mounting fixture assembly comprises a mounting plate, a counterweight plate and a reinforcement plate, the counterweight plate and the reinforcement plate are both arranged on the mounting plate, and the mounting plate is connected to the swing drive assembly.

[0014] Preferably, the torsion drive assembly comprises a first motor and a first reducer, wherein the output end of the first motor is connected to the input end of the first reducer, the first reducer is mounted on a mounting plate and the output end of the first reducer is connected to a first clamp, the first motor drives the first clamp and the cable positioned in the first clamp to torsion through the first reducer, and the first motor is connected to a control box.

[0015] Preferably, the swing drive assembly includes a second motor and a second reducer, the second reducer is installed on the stretching drive assembly, the second motor output shaft is connected to the second reducer input shaft, the mounting plate is connected to the second reducer output shaft, the second motor drives the first clamp and the cable positioned in the first clamp to swing through the second reducer and the mounting plate, and the second motor is connected to the control box.

[0016] Preferably, the stretching drive assembly includes a mounting rod, a third motor, a third reducer and a driving shaft. A first cross bar and a second cross bar are correspondingly provided at front and rear intervals in the test box. A first chain is provided on the rear side of the first cross bar, and a second chain is provided on the front side of the second cross bar. A first guide member and a second guide member are provided on the front and rear sides of the mounting rod, respectively. The first guide member is sleeved on the first cross bar, and the second guide member is sleeved on the second cross bar. The second reducer and the third reducer are both installed on the mounting rod. The output end of the third motor is connected to the input end of the third reducer, and the driving shaft is transmitted on the output end of the third reducer. The third reducer drives the driving shaft to rotate. A first sprocket and a second sprocket are provided on the front and rear sides of the driving shaft, respectively. The first sprocket is meshed with the first chain, and the second sprocket is meshed with the second chain. The third motor drives the driving shaft to rotate through the third reducer to drive the second reducer and the second motor to move, thereby driving the mounting plate, the first fixture and the cable in the first fixture to move and stretch. The third motor is connected to the control box.

[0017] Preferably, the first cross bar and the second cross bar are respectively provided with limit switches, and the limit switches are connected to the control box.

[0018] Preferably, it further comprises a first shock absorber, a second shock absorber and a third shock absorber, wherein the first shock absorber is mounted on the first guide member, the second shock absorber is mounted on the second guide member, and the third shock absorber is mounted on the mounting rod.

[0019] The invention also discloses a method for using the tensile-torsion pendulum testing machine, comprising the following steps:

[0020] S1. Open the door, take out the cable to be tested, clamp the first end of the cable into the third positioning member and the fourth positioning member, and clamp the second end of the cable into the first positioning member and the second positioning member;

[0021] S2, close the door, and start the first motor, the second motor, the third motor, the limit switch, the first test assembly and the second test assembly through the control box;

[0022] S3, the first motor drives the first fixture and the cable positioned in the first fixture to twist through the first reducer, the second motor drives the first fixture and the cable positioned in the first fixture to swing through the second reducer and the mounting plate, the third motor drives the driving shaft to rotate through the third reducer to drive the second reducer and the second motor to move, and then drives the mounting plate, the first fixture and the cable in the first fixture to move and stretch, the first test assembly and the second test assembly test the continuity of the cable and feed back to the control box;

[0023] S4. Turn off the first motor, the second motor, the third motor, the limit switch, the first test assembly and the second test assembly through the control box. After the test is completed, open the door and remove the cables.

[0024] By adopting the above technical solution, the present invention has the following beneficial effects:

[0025] (1) The present invention is provided with components such as a stretching drive component, a torsion drive component, a swinging drive component, a first test component, and a second test component. These components cooperate with each other to test the continuity of the cable after stretching, torsion, and swinging, and can test the performance of the cable, so as to improve the performance of the cable in a targeted manner;

[0026] (2) The present invention is provided with a limit switch, which can limit the stretching length of the cable;

[0027] (3) The present invention is provided with a first shock absorber, a second shock absorber and a third shock absorber, which can perform shock absorption;

[0028] In summary, the present invention has the advantages of being able to perform tension, torsion and swing tests on cables, making it easier to test cable performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of the present invention;

[0030] Figure 2 yes Figure 1 The structural diagram when the box board of the test box is removed;

[0031] Figure 3 It is a structural schematic diagram of the tension-torsion pendulum test mechanism of the present invention;

[0032] Figure 4is a schematic structural diagram of the tension-torsion pendulum test mechanism of the present invention in another direction;

[0033] Figure 5 It is a structural schematic diagram of the tension-torsion pendulum test mechanism of the present invention in another direction;

[0034] Figure 6 is a schematic structural diagram of a first clamp of the present invention;

[0035] Figure 7 is a schematic structural diagram of the first clamp of the present invention in another direction;

[0036] Figure 8 It is a structural schematic diagram of the positioning component of the present invention. DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0038] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0039] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0040] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Example 1

[0043] In this embodiment, a tensile and torsion pendulum testing machine and a method of using the same are provided, which can perform tensile and torsion pendulum tests on cables. During the specific test process, the performance of the cable can be judged by the continuity of the cable (the continuity of the internal fiber core).

[0044] like Figure 1-8 As shown, in one embodiment of the present invention, the pulling and torsion pendulum testing machine of the present invention comprises a test box 1, a positioning assembly, a pulling and torsion pendulum testing mechanism, a control box 2 and a test module. The test box 1 is rotatably provided with a door body 110, and the door body 110 is mainly used for the entry and exit of cables and personnel. The test box 1 is provided with a plurality of box panels. The positioning assembly is arranged in the test box 1 and is used to position the first end of the cable. The pulling and torsion pendulum testing mechanism is arranged in the test box 1 and is used to perform tension and torsion pendulum tests on the cable. The pulling and torsion pendulum testing mechanism comprises a tension driving assembly, a torsion driving assembly, a swing driving assembly and a first clamp 3. The first clamp 3 is connected to the torsion driving assembly and the first clamp 3 is used to position the second end of the cable. The torsion driving assembly is installed on the swing driving assembly by installing the clamp assembly. The swing driving assembly is installed on the tension driving assembly. The tension driving assembly is arranged in the test box 1. The torsion driving assembly is used to drive the first clamp 3 and the cable positioned in the first clamp 3 to twist. The swing driving assembly is used to The installation fixture assembly drives the torsion drive assembly to swing, thereby driving the first fixture 3 and the cable positioned in the first fixture 3 to swing; the stretching drive assembly is used to drive the swinging drive assembly to move, and then drive the cable in the first fixture 3 to stretch through the installation fixture assembly; the installation fixture assembly is used to install and connect the torsion drive assembly; the installation fixture assembly is also used as a counterweight for the first fixture 3; the control box 2 is arranged on one side of the test box 1 and is respectively connected to the stretching drive assembly, the torsion drive assembly, and the swing drive assembly; the control box 2 is used for the overall control of the present invention; the test module includes a first test assembly and a second test assembly 4; the first test assembly and the second test assembly 4 are respectively arranged in the first fixture 3 and the positioning assembly; the first test assembly and the second test assembly 4 are used to test the continuity of the cable; the first test assembly and the second test assembly 4 are both connected to the control box 2; the first test assembly and the second test assembly 4 can be specific devices such as cable fault testers, which are mainly used for the continuity test of cables.

[0045] Specific reference Figure 6 and Figure 7The first clamp 3 includes a first connecting plate 310, a first side plate 311, a first connecting rod 312, a second connecting rod 313, a third connecting rod 314, a first positioning member 315 and a second positioning member 316. One side of the first connecting plate 310 is connected to the torsion drive assembly, and the other side of the first connecting plate 310 is connected to the first side plate 311 through the first connecting rod 312, the second connecting rod 313 and the third connecting rod 314. The first connecting rod 312, the second connecting rod 313 and the third connecting rod 314 are evenly distributed between the first connecting plate 310 and the first side plate 311, that is, the first connecting rod 312, the second connecting rod 313 and the third connecting rod 314 are arranged in a herringbone shape, and the side of the first positioning member 315 close to the first side plate 311 and the side of the second positioning member 316 close to the first side plate 311 are both fixed to the first side plate 31 1, the first positioning member 315 and the second positioning member 316 are arranged in correspondence with each other at upper and lower intervals, the first positioning member 315 and the second positioning member 316 can be fixed by screws or the like on a side close to the first connecting plate 310, the first positioning member 315 is provided with a first positioning tooth 317, the second positioning member 316 is installed with a first clamping member 318, the first clamping member 318 is provided with a second positioning tooth 319, the first positioning tooth 317 and the second positioning tooth 319 are arranged in correspondence with each other up and down, and the first positioning tooth 317 and the second positioning tooth 319 are used to locate the second end of the cable, after the second section of the cable is inserted into the first positioning tooth 317 and the second positioning tooth 319, the first positioning member 315 and the second positioning member 316 can be fixed by screws, and the first test assembly can be specifically located on a side of the first connecting plate 310 close to the first side plate 311 and connected to the cable for testing;

[0046] Specific reference Figure 8 The positioning assembly includes a positioning block 511, a connecting frame 512, a third positioning member 513 and a fourth positioning member 514. The positioning block 511 is arranged in the test box 1, that is, the positioning block 511 is specifically fixed on the test box 1, the connecting frame 512 is connected to the positioning block 511, the third positioning member 513 is arranged on a side of the connecting frame 512 away from the positioning block 511, the fourth positioning member 514 is located above the third positioning member 513 and is detachably connected to the third positioning member 513, a third positioning tooth 515 is provided in the third positioning member 513, and a fourth positioning tooth 516 is provided in the fourth positioning member 514. The third positioning tooth 515 and the fourth positioning tooth 516 are used to position the first end of the cable.

[0047] Please refer again Figure 1-5The mounting fixture assembly includes a mounting plate 61, a counterweight plate 62 and a reinforcing plate 63, the counterweight plate 62 and the reinforcing plate 63 are both arranged on the mounting plate 61, the mounting plate 61 is connected to the swing drive assembly, the torsion drive assembly includes a first motor 64 and a first reducer 65, the output end of the first motor 64 is connected to the input end of the first reducer 65, the first reducer 65 is mounted on the mounting plate 61 and the output end of the first reducer 65 is connected to the first fixture 3, the first motor 64 drives the first fixture 3 and the cable positioned in the first fixture 3 to twist through the first reducer 65, the first motor 64 is connected to the control box 2, and the first motor 64 can be a servo motor;

[0048] The swing drive assembly includes a second motor 66 and a second reducer 67, the second reducer 67 is installed on the stretch drive assembly, the output shaft of the second motor 66 is connected to the input shaft of the second reducer 67, the mounting plate 61 is connected to the output shaft of the second reducer 67, the second motor 66 drives the first fixture 3 and the cable positioned in the first fixture 3 to swing through the second reducer 67 and the mounting plate 61, and the second motor 66 is connected to the control box 2;

[0049] The stretching drive assembly includes a mounting rod 68, a third motor 69, a third reducer 70 and a drive shaft 71. The first crossbar and the second crossbar are correspondingly arranged at intervals in the front and rear of the test box 1. The first chain is arranged at the rear side of the first crossbar, and the second chain is arranged at the front side of the second crossbar. The front and rear sides of the mounting rod 68 are respectively provided with a first guide 72 and a second guide 73. The first guide 72 is sleeved on the first crossbar, and the second guide 73 is sleeved on the second crossbar. The second reducer 67 and the third reducer 70 are both installed on the mounting rod 68. The output end of the third motor 69 is connected to the third reducer 70. 0 is connected to the input end, the driving shaft 71 is arranged on the output end of the third reducer 70, the third reducer 70 drives the driving shaft 71 to rotate, the front and rear sides of the driving shaft 71 are respectively provided with a first sprocket 74 and a second sprocket 75, the first sprocket 74 is meshed and connected with the first chain, the second sprocket 75 is meshed and connected with the second chain, the third motor 69 drives the driving shaft 71 to rotate through the third reducer 70 to drive the second reducer 67 and the second motor 66 to move, and then drive the mounting plate 61, the first fixture 3 and the cable in the first fixture 3 to move and stretch, the third motor 69 is connected to the control box 2;

[0050] The first guide member 72 may include four guide wheels, two of which form a group, two of which are located on the upper side at left and right intervals, and the other two are located on the lower side at left and right intervals, and then the guide wheel located on the upper side is clamped above the first cross bar, and the guide wheel located on the lower side is clamped below the first cross bar, and the first cross bar and the second cross bar are respectively provided with limit switches 76, and the limit switches 76 are connected to the control box 2. The limit switch 76 can limit the stretching length of the cable, that is, the stretching drive assembly stops moving after moving to a certain position to the left. The present invention also includes a first shock absorber 77, a second shock absorber 78 and a third shock absorber 79. The first shock absorber 77 is installed on the first guide member 72, the second shock absorber 78 is installed on the second guide member 73, and the third shock absorber 79 is installed on the mounting rod 68. The first shock absorber 77, the second shock absorber 78 and the third shock absorber 79 can perform shock absorption.

[0051] The invention also discloses a method for using the tensile-torsion pendulum testing machine, comprising the following steps:

[0052] S1. Open the door 110, take out the cable to be tested, clamp the first end of the cable into the third positioning member 513 and the fourth positioning member 514, and clamp the second end of the cable into the first positioning member 315 and the second positioning member 316;

[0053] S2, close the door 110, and start the first motor 64, the second motor 66, the third motor 69, the limit switch 76, the first test assembly and the second test assembly 4 through the control box 2;

[0054] S3, the first motor 64 drives the first fixture 3 and the cable positioned in the first fixture 3 to twist through the first reducer 65, the second motor 66 drives the first fixture 3 and the cable positioned in the first fixture 3 to swing through the second reducer 67 and the mounting plate 61, the third motor 69 drives the driving shaft 71 to rotate through the third reducer 70 to drive the second reducer 67 and the second motor 66 to move, and then drive the mounting plate 61, the first fixture 3 and the cable in the first fixture 3 to move and stretch, the first test component and the second test component 4 test the continuity of the cable and feedback to the control box 2;

[0055] S4. Turn off the first motor 64, the second motor 66, the third motor 69, the limit switch 76, the first test assembly and the second test assembly 4 through the control box 2. After the test is completed, open the door 110 and remove the cables.

[0056] This embodiment does not impose any formal limitation on the shape, material, structure, etc. of the present invention. Any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. Tensile-torsion pendulum testing machine, characterized in that: include: The test box is rotatably provided with a door body; A positioning assembly, disposed in the test box and used to position the first end of the cable; A tension-torsion-pendulum test mechanism is arranged in a test box and is used to perform tension and torsion-pendulum tests on cables, the tension-torsion-pendulum test mechanism comprises a tension drive assembly, a torsion drive assembly, a swing drive assembly and a first fixture, the first fixture is connected to the torsion drive assembly and the first fixture is used to position the second end of the cable, the torsion drive assembly is installed on the swing drive assembly through an installation fixture assembly, the swing drive assembly is installed on the tension drive assembly, the tension drive assembly is arranged in the test box, the torsion drive assembly is used to drive the first fixture and the cable positioned in the first fixture to twist, the swing drive assembly is used to drive the torsion drive assembly to swing through the installation fixture assembly so as to drive the first fixture and the cable positioned in the first fixture to swing, the tension drive assembly is used to drive the swing drive assembly to move and then drive the cable in the first fixture to stretch through the installation fixture assembly, the installation fixture assembly is used to install and connect the torsion drive assembly, and the installation fixture assembly is also used as a counterweight for the first fixture; and A control box is arranged on one side of the test box and is respectively connected to the tensile drive assembly, the torsion drive assembly, and the swing drive assembly; It also includes a test module, the test module includes a first test component and a second test component, the first test component and the second test component are respectively arranged in the first fixture and the positioning component, the first test component and the second test component are used to test the continuity of the cable, and the first test component and the second test component are both connected to the control box; The first clamp comprises a first connecting plate, a first side plate, a first connecting rod, a second connecting rod, a third connecting rod, a first positioning member and a second positioning member, one side of the first connecting plate is connected to the torsion drive assembly, and the other side of the first connecting plate is connected to the first side plate through the first connecting rod, the second connecting rod and the third connecting rod, the first connecting rod, the second connecting rod and the third connecting rod are evenly distributed between the first connecting plate and the first side plate, a side of the first positioning member close to the first side plate and a side of the second positioning member close to the first side plate are both fixed to the first side plate, the first positioning member and the second positioning member are arranged correspondingly at upper and lower intervals, a first positioning tooth is provided in the first positioning member, a first clamping member is installed in the second positioning member, a second positioning tooth is provided in the first clamping member, the first positioning tooth and the second positioning tooth are arranged correspondingly up and down, and the first positioning tooth and the second positioning tooth are used to position the second end of the cable; The positioning assembly includes a positioning block, a connecting frame, a third positioning member and a fourth positioning member, the positioning block is arranged in the test box, the connecting frame is connected to the positioning block, the third positioning member is arranged on a side of the connecting frame away from the positioning block, the fourth positioning member is located above the third positioning member and is detachably connected to the third positioning member, a third positioning tooth is arranged in the third positioning member, a fourth positioning tooth is arranged in the fourth positioning member, and the third positioning tooth and the fourth positioning tooth are used to position the first end of the cable; The torsion drive assembly includes a first motor and a first reducer, the output end of the first motor is connected to the input end of the first reducer, the first reducer is mounted on the mounting plate and the output end of the first reducer is connected to the first fixture, the first motor drives the first fixture and the cable positioned in the first fixture to twist through the first reducer, and the first motor is connected to the control box; The swing drive assembly includes a second motor and a second reducer, the second reducer is installed on the stretching drive assembly, the second motor output shaft is connected to the second reducer input shaft, the mounting plate is connected to the second reducer output shaft, the second motor drives the first fixture and the cable positioned in the first fixture to swing through the second reducer and the mounting plate, and the second motor is connected to the control box.

2. The tensile-torsion pendulum testing machine according to claim 1, characterized in that: The mounting fixture assembly comprises a mounting plate, a counterweight plate and a reinforcement plate. The counterweight plate and the reinforcement plate are both arranged on the mounting plate, and the mounting plate is connected to the swing drive assembly.

3. The tensile-torsion pendulum testing machine according to claim 2, characterized in that: The stretching drive assembly includes a mounting rod, a third motor, a third reducer and a driving shaft. A first cross bar and a second cross bar are correspondingly arranged at front and rear intervals in the test box. A first chain is arranged on the rear side of the first cross bar, and a second chain is arranged on the front side of the second cross bar. A first guide member and a second guide member are respectively arranged on the front and rear sides of the mounting rod. The first guide member is sleeved on the first cross bar, and the second guide member is sleeved on the second cross bar. The second reducer and the third reducer are both installed on the mounting rod. The output end of the third motor is connected to the input end of the third reducer, and the driving shaft is arranged on the output end of the third reducer. The third reducer drives the driving shaft to rotate. A first sprocket and a second sprocket are respectively arranged on the front and rear sides of the driving shaft. The first sprocket is meshed with the first chain, and the second sprocket is meshed with the second chain. The third motor drives the driving shaft to rotate through the third reducer to drive the second reducer and the second motor to move, thereby driving the mounting plate, the first fixture and the cable in the first fixture to move and stretch. The third motor is connected to the control box.

4. The tensile-torsion pendulum testing machine according to claim 3, characterized in that: The first cross bar and the second cross bar are respectively provided with limit switches, and the limit switches are connected to the control box.

5. The tensile-torsion pendulum testing machine according to claim 4, characterized in that: The invention also comprises a first shock absorber, a second shock absorber and a third shock absorber. The first shock absorber is installed on the first guide member, the second shock absorber is installed on the second guide member, and the third shock absorber is installed on the mounting rod.

6. The method for using the tensile-torsion pendulum testing machine according to claim 5, characterized in that: The following steps are involved: S1. Open the door, take out the cable to be tested, clamp the first end of the cable into the third positioning member and the fourth positioning member, and clamp the second end of the cable into the first positioning member and the second positioning member; S2, close the door, and start the first motor, the second motor, the third motor, the limit switch, the first test assembly and the second test assembly through the control box; S3, the first motor drives the first fixture and the cable positioned in the first fixture to twist through the first reducer, the second motor drives the first fixture and the cable positioned in the first fixture to swing through the second reducer and the mounting plate, the third motor drives the driving shaft to rotate through the third reducer to drive the second reducer and the second motor to move, and then drives the mounting plate, the first fixture and the cable in the first fixture to move and stretch, the first test assembly and the second test assembly test the continuity of the cable and feed back to the control box; S4. Turn off the first motor, the second motor, the third motor, the limit switch, the first test assembly and the second test assembly through the control box. After the test is completed, open the door and remove the cables.

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