Cable fatigue test equipment

Abstract

The invention belongs to the technical field of cable fatigue testing, and particularly relates to cable fatigue testing equipment which comprises a testing plate, a second limiting shell is arranged on one side of the top end of the testing plate, a third limiting shell is arranged on one side of the second limiting shell, and a testing section is arranged between the second limiting shell and the third limiting shell. The sides, away from each other, of the third limiting shell and the second limiting shell are each provided with a pair of cutters, the two sets of cutters are connected with a positive electrode and a negative electrode for equipment testing, a second motor is arranged on one side of each cutter, and a first motor is installed in the testing plate. A rotating rod is arranged in the middle of the second limiting shell and the middle of the third limiting shell, a second toothed rod is fixed to one side of the third limiting shell, and the second toothed rod can be driven to rotate upwards by 90 degrees. A wire end is cut off through the cutter, the resistance is tested, the test section is repeatedly bent through the second limiting shell and the third limiting shell, the test section is electrified through the cutter, the bent resistance is tested, and therefore the fatigue test of the test section is rapidly achieved.

Description

Technical Field

[0001] This invention belongs to the field of cable fatigue testing technology, specifically a cable fatigue testing device. Background Technology

[0002] A cable is a core device used for transmitting electrical energy or signals. Its core structure mainly consists of a conductor and an insulation layer. The conductor, as the transmission path for current or signals, is usually made of highly conductive metals such as copper and aluminum and is responsible for efficiently transmitting electrical energy or signals. The insulation layer tightly wraps around the conductor and its main function is to isolate the conductor from the outside world, prevent current leakage or signal interference, and ensure transmission safety and stability.

[0003] In practical applications, cables often need to be bent according to the installation scenario (such as equipment connection, wiring construction, etc.). If the conductor is repeatedly bent or in a bent state for a long time, it is prone to metal fatigue. Metal fatigue is a phenomenon of performance degradation of metal materials under cyclic stress. When the conductor is metal fatigued, cracks may gradually appear, and in severe cases, even breakage may occur. Even if it does not completely break, cracks will reduce the effective conductive cross-sectional area of ​​the conductor. The increased resistance will not only increase the power transmission loss (manifested as cable heating), but may also affect the stability and accuracy of signal transmission, and even cause safety hazards. Therefore, in order to ensure the reliability and safety of cables in actual use, special fatigue tests need to be carried out on the cables during the production process or before leaving the factory to simulate the bending conditions that they may encounter during use, test the cable's ability to withstand repeated bending and the changes in electrical and mechanical properties after bending, so as to screen out products that meet quality standards.

[0004] A patent application with publication number CN111337338A discloses a fatigue testing device for repeatedly winding and unwinding optical cables. The device includes a drive mechanism, a loading mechanism, a wrapping angle mechanism, and a control system. It can simulate the repeated winding and unwinding process of optical cables wound on a drum under actual working tensile force, which helps to observe the state of the optical cable after the test and comprehensively evaluate the fatigue resistance of the optical cable.

[0005] The above-mentioned technical solution tests the cable's fatigue resistance by repeatedly winding and unwinding it during the testing process. However, in actual application scenarios, the cable needs to be bent according to different working conditions. In some scenarios, not only is a larger bending range required, but it also needs to withstand high-frequency bending. The test method of simply winding and unwinding the cable cannot accurately reproduce these real bending conditions and cannot fully verify the cable's performance in actual use.

[0006] Therefore, the present invention provides a cable fatigue testing device. Summary of the Invention

[0007] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0008] The technical solution adopted by the present invention to solve its technical problem is as follows: The cable fatigue testing equipment of the present invention includes a test plate, a second limiting shell is provided on one side of the top of the test plate, a third limiting shell is provided on one side of the second limiting shell, a test section is provided between the second limiting shell and the third limiting shell, a wire feeding assembly is provided inside the second limiting shell and the third limiting shell, the two ends of the test section are respectively fixed inside the second limiting shell and the third limiting shell through the wire feeding assembly, a pair of cutters are respectively provided on the side of the third limiting shell and the second limiting shell that are far apart from each other, the two sets of cutters are respectively connected to the positive and negative electrodes used for testing by the equipment, a second motor is provided on one side of the cutter, and a first motor is installed inside the test plate; A rotating rod is provided in the middle of the second limiting shell and the third limiting shell, and a second toothed rod is fixed on one side of the third limiting shell. The second toothed rod can be driven to rotate upward by 90°. The second rack drives the rotating rod to guide the bending direction of the test section.

[0009] Preferably, a cable take-up reel is installed on one side of the top of the test plate, and a first limiting shell is provided on one side of the cable take-up reel. A wire feeding assembly is also provided inside the first limiting shell. The wire feeding assembly includes a third motor installed on the top of the second limiting shell. A worm gear is fixed to the end of the shaft of the third motor. Multiple sets of clamping rollers rotate inside the second limiting shell. Worm wheels are fixed to the tops of the two sets of clamping rollers near the worm gear. The worm gear is meshed with the two worm wheels. Slide grooves are provided on both sides of the top of the test plate. Moving blocks are fixed on both sides of the second and third limiting shells. A first bidirectional threaded rod is rotatably connected inside one of the slide grooves. The end of the shaft of the first motor is fixedly connected to one end of the first bidirectional threaded rod. The moving block on one side is threadedly connected to the first bidirectional threaded rod. A guide rod is fixed inside the other slide groove. The moving block on the other side is slidably connected to the guide rod.

[0010] Preferably, each of the cutters is provided with a support plate on one side, and a second bidirectional threaded rod is rotatably connected between the support plates. The second bidirectional threaded rod is threadedly connected to the second bidirectional threaded rod. The second motor is installed on one side of one of the support plates, and the end of the shaft of the second motor is fixedly connected to one end of the second bidirectional threaded rod. A sliding rod is fixed below between the two support plates, and the cutter is slidably connected to the sliding rod.

[0011] Preferably, a first bracket is fixed to the end of the rotating rod, a first roller is rotatably connected inside the first bracket, a turntable is rotatably connected to the other end of the rotating rod, a first gear is fixed to the end of the rotating shaft of the rotating rod, a second rack can mesh with the first gear, and the second rack can drive the first gear to rotate 90°.

[0012] Preferably, a positioning shell is fixed at the top of the test plate at the middle of the second limiting shell and the third limiting shell. An electric telescopic rod is installed inside the test plate. The output rod of the electric telescopic rod extends into the positioning shell. A connecting column is fixed at the bottom of the turntable. The output rod of the electric telescopic rod is rotatably connected to the bottom of the connecting column. The connecting column is inserted into the positioning shell. A second roller is provided on one side of the first roller. When the electric telescopic rod drives the turntable to separate from the positioning shell, the first roller is close to the test section, and the second roller is away from the test section.

[0013] Preferably, a second bracket is rotatably connected to the outside of the second roller, a telescopic plate is fixed to one side of the second bracket, the bottom end of the telescopic plate is provided with teeth, the telescopic plate is slidably connected to the inside of the first bracket, a rotating rod is rotatably connected to the inside of the rotating rod, a gear is provided at the end of the rotating rod near the telescopic plate, the gear is meshed with the bottom end of the telescopic plate, a toothed plate is provided above the positioning shell, the toothed plate passes through the inside of the turntable, a gear is also provided at the end of the rotating rod near the toothed plate, the gear is meshed with the toothed plate, a coil spring is fixed to the outside of the rotating rod, and the other end of the coil spring is fixedly connected to the rotating rod.

[0014] Preferably, the bottom end of the connecting column is provided with multiple positioning grooves at equal intervals, and the inside of the positioning shell is fixed with multiple limiting strips at equal intervals, and the positioning grooves can slide outside the limiting strips.

[0015] Preferably, a gear ring is fixed to the outside of the turntable, and a first gear is fixed to one side of the third limiting shell below the second gear, the first gear being able to mesh with the gear ring.

[0016] Preferably, a rotating cavity is provided inside the positioning shell below the limiting strip, and the connecting column can rotate inside the rotating cavity.

[0017] Preferably, a rotating ring is fixed to the bottom end of the toothed plate, and the rotating ring is rotatably connected to the top end of the positioning shell.

[0018] The beneficial effects of this invention are as follows: 1. The cable fatigue testing equipment of the present invention cuts off the wire end with a cutter and tests the resistance, and repeatedly bends the test section through a second limiting shell and a third limiting shell, and then tests the resistance of the test section after bending by energizing the cutter, thereby realizing rapid fatigue testing of the test section.

[0019] 2. The cable fatigue testing equipment of the present invention guides the test section by rotating the first roller through the rotating rod, thereby positioning the bending direction of the test section and thus better simulating the bending of the test section under real use conditions. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the first bidirectional threaded rod structure in this invention; Figure 3 This is a schematic diagram of the internal structure of the second limiting shell in this invention; Figure 4 This is a schematic diagram of the cutting blade structure in this invention; Figure 5 This is a schematic diagram of the operation of the second roller in this invention; Figure 6 This is a schematic diagram of the operation of the first roller in this invention; Figure 7 This is a schematic diagram of the internal structure of the positioning shell in this invention; Figure 8 This is a schematic diagram of the internal structure of the rotating rod in this invention.

[0022] In the diagram: 1. Test plate; 11. Cable take-up reel; 111. Cable end; 112. Test section; 12. First limiting shell; 13. Second limiting shell; 131. Moving block; 14. Third limiting shell; 15. Slide groove; 151. First bidirectional threaded rod; 152. First motor; 16. Cutter; 161. Support plate; 162. Second bidirectional threaded rod; 163. Slide rod; 164. Second motor; 17. Third motor; 171. Worm gear; 172. Worm wheel; 173. Clamping roller 2. Rotating rod; 21. Turntable; 211. Gear ring; 212. First gear; 213. Positioning groove; 214. Connecting column; 22. First gear; 221. Second gear; 23. First roller; 231. First bracket; 24. Second roller; 241. Second bracket; 242. Telescopic plate; 243. Rotating rod; 244. Coil spring; 25. Electric telescopic rod; 251. Positioning shell; 252. Limiting strip; 253. Rotating cavity; 254. Rotating ring; 255. Gear plate. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0024] like Figures 1 to 8 As shown in the embodiment of the present invention, a cable fatigue testing device includes a test plate 1. A second limiting shell 13 is provided on one side of the top of the test plate 1, and a third limiting shell 14 is provided on one side of the second limiting shell 13. A test section 112 is provided between the second limiting shell 13 and the third limiting shell 14. A wire feeding assembly is provided inside the second limiting shell 13 and the third limiting shell 14. The two ends of the test section 112 are respectively fixed inside the second limiting shell 13 and the third limiting shell 14 through the wire feeding assembly. A pair of cutters 16 are respectively provided on the side of the third limiting shell 14 and the second limiting shell 13 that are far apart from each other. The two sets of cutters 16 are respectively connected to the positive and negative electrodes of the test. A second motor 164 is provided on one side of the cutter 16. A first motor 152 is installed inside the test plate 1. A rotating rod 2 is provided in the middle of the second limiting shell 13 and the third limiting shell 14. A second toothed rod 221 is fixed on one side of the third limiting shell 14. The second toothed rod 221 can be driven to rotate upward 90°. Among them, the second toothed rod 221 drives the rotating rod 2 to guide the bending direction of the test section 112; During cable use, both ends of the cable need to be connected to two devices that require electrical connection. However, the cable needs to be bent into different shapes during use, and some cables may need to be bent at high frequency. Therefore, the fatigue resistance of the cable is required to be high. The fatigue resistance of the cable needs to be tested after production. The test section 112 is placed between the second limiting shell 13 and the third limiting shell 14 and the test section 112 is fixed by the wire feeding assembly. The cutter 16 is connected to the test electrode. At this time, the current is input through the cutter 16 at one end and the current is output through the cutter 16 at the other end to test the resistance value of the current test section 112. Next, the bending process begins. At this time, the first motor 152 drives the second limiting shell 13 and the third limiting shell 14 to repeatedly approach and separate. During this process, the second limiting shell 13 and the third limiting shell 14 clamp the test segment 112 and bend it. However, the bending direction of the cable is random during this process. In actual use, the bending direction of the cable is deterministic. Therefore, when approaching, the movement of the third limiting shell 14 will drive the second toothed rod 221. The second toothed rod 221 drives the rotating rod 2 to rotate upwards by 90°, pushing the test segment 112 to bend. When the second limiting shell 13 and the third limiting shell 14 separate, the test segment 112 is gradually pulled to straighten it again. Simultaneously, the second toothed rod 221 will drive the rotating rod 2 to rotate 90° in the opposite direction to reset. In this way, the test section 112 will bend repeatedly until the required number of bends for the test is reached. Then, the first motor 152 will drive the second limiting shell 13 and the third limiting shell 14 to reset. At this time, the second limiting shell 13 and the third limiting shell 14 can drive the test section 112 to re-contact with the two cutters 16. Then, power is applied and the test is performed again. The resistance value of this test can be used to determine whether there is a break inside the test section 112, thereby measuring the fatigue resistance of the cable. In this way, the cable can be subjected to bending tests in a way that simulates the state of real use scenarios, and the test results are more accurate.

[0025] like Figures 1 to 2 As shown, a cable take-up reel 11 is installed on one side of the top of the test plate 1. A first limiting shell 12 is provided on one side of the cable take-up reel 11. A cable feeding assembly is also provided inside the first limiting shell 12. The cable feeding assembly includes a third motor 17 installed on the top of a second limiting shell 13. A worm gear 171 is fixed to the end of the shaft of the third motor 17. Multiple sets of clamping rollers 173 rotate inside the second limiting shell 13. Worm wheels 172 are fixed to the top of the two sets of clamping rollers 173 near the worm gear 171. Between the worm gear 171 and the two worm wheels 172 The test plate 1 has a meshing connection. Slide grooves 15 are provided on both sides of the top of the test plate 1. Movable blocks 131 are fixed on both sides of the second limiting shell 13 and the third limiting shell 14. A first bidirectional threaded rod 151 is rotatably connected inside one of the slide grooves 15. The end of the shaft of the first motor 152 is fixedly connected to one end of the first bidirectional threaded rod 151. One of the movable blocks 131 is threadedly connected to the first bidirectional threaded rod 151. A guide rod is fixed inside the other slide groove 15. The movable block 131 on the other side is slidably connected to the guide rod. During the test, the cable take-up reel 11 to be tested is installed on the top of the test plate 1. After installation, the operator pulls the cable end 111 out from the outside of the cable take-up reel 11 and inserts the end of the cable end 111 into the inside of the first limiting shell 12. At this time, the second limiting shell 13 is in a position close to the first limiting shell 12. The third motor 17 of the first limiting shell 12 drives the worm gear 171 to rotate, the worm gear 171 drives the two worm wheels 172 to rotate, and the worm wheels 172 drive the clamping roller 173 to rotate inside the second limiting shell 13. At this time, the clamping roller 173 can pull the cable end 111 into the second limiting shell. The wire end 111 is then clamped by the clamping roller 173 inside the second limiting shell 13. Driven by the first motor 152, the second limiting shell 13 and the third limiting shell 14 are brought closer together. Simultaneously, the clamping roller 173 of the second limiting shell 13 stops rotating, pulling the wire end 111 towards the third limiting shell 14. Meanwhile, the clamping roller 173 inside the first limiting shell 12 continues to rotate, maintaining the feeding of the wire end 111. When the second limiting shell 13 and the third limiting shell 14 approach each other, the clamping roller 173 inside the second limiting shell 13 rotates, pulling the wire end 111 towards the third limiting shell 14. Internally, the clamping roller 173 inside the third limiting shell 14 clamps the end of the wire 111. Then, the first motor 152 rotates in the reverse direction. At this time, the second limiting shell 13 and the third limiting shell 14 move and separate. During this process, the clamping roller 173 inside the first limiting shell 12 stops rotating, while the clamping roller 173 inside the second limiting shell 13 rotates in the conveying direction. When the second limiting shell 13 and the third limiting shell 14 reset, the power to the second motor 164 is triggered. The second motor 164 then drives the cutter 16 to cut both ends of the wire 111. A test segment 112 is formed between 14, which can be automatically cut out. When the second limiting shell 13 and the third limiting shell 14 need to move, the first motor 152 drives the first bidirectional threaded rod 151 to rotate. At this time, the first motor 152 drives the moving blocks 131 at both ends to slide inside the slide groove 15. The thread direction at both ends of the first bidirectional threaded rod 151 is set to a symmetrical direction, which allows the moving blocks 131 to drive the second limiting shell 13 and the third limiting shell 14 to move closer and further away, making it easier for the second limiting shell 13 and the third limiting shell 14 to move and drive the test segment 112 to bend.

[0026] like Figures 1 to 4 As shown, each cutter 16 has a support plate 161 on one side, and a second bidirectional threaded rod 162 is rotatably connected between the support plates 161. The second bidirectional threaded rod 162 is threadedly connected to the second bidirectional threaded rod 162. A second motor 164 is installed on one side of one of the support plates 161. The end of the shaft of the second motor 164 is fixedly connected to one end of the second bidirectional threaded rod 162. A slide rod 163 is fixed below between the two support plates 161, and the cutter 16 is slidably connected to the slide rod 163. When the cutter 16 needs to cut the wire end 111, the second motor 164 is started to drive the second bidirectional threaded rod 162 to rotate. At this time, the second bidirectional threaded rod 162 drives the two cutters 16 to move closer together. The cutter 16 can then cut the wire end 111, thereby separating the wire end 111 from the cable take-up reel 11 into a test section 112, which makes it easier to test the wire end 111. When the cutter 16 moves, in order to ensure the stability of the cutter 16, a slide bar 163 is set below the second bidirectional threaded rod 162. The slide bar 163 can keep the cutter 16 moving horizontally when the second bidirectional threaded rod 162 drives the cutter 16 to move, thereby ensuring the stability of the cutter 16 in cutting the wire end 111.

[0027] like Figures 1 to 5 As shown, a first bracket 231 is fixed to the end of the rotating rod 2, and a first roller 23 is rotatably connected inside the first bracket 231. A turntable 21 is rotatably connected to the other end of the rotating rod 2. A first gear 22 is fixed to the end of the rotating shaft of the rotating rod 2. A second gear 221 can mesh with the first gear 22 and the second gear 221 can drive the first gear 22 to rotate 90°. When the rotating rod 2 needs to push the test section 112 to bend, the second rack 221 drives the first gear 22 to rotate, which in turn drives the rotating rod 2 to rotate. At this time, the rotating rod 2 drives the first roller 23 to push the test section 112 to the bottom through the first bracket 231. The first roller 23 can provide a thrust to the test section 112, making the test section 112 tend to bend upward. When the second rack 221 drives the first gear 22 to rotate 90°, the teeth of the second rack 221 separate from the first gear 22 and will not drive the first gear 22 to continue to rotate. When the second limiting shell 13 and the third limiting shell 14 separate, the second rack 221 will drive the first gear 22 to rotate 90° in the opposite direction to reset, realizing automatic bending and reset.

[0028] like Figures 1 to 7 As shown, a positioning shell 251 is fixed at the top of the test plate 1 at the middle of the second limiting shell 13 and the third limiting shell 14. An electric telescopic rod 25 is installed inside the test plate 1. The output rod of the electric telescopic rod 25 extends into the positioning shell 251. A connecting column 214 is fixed at the bottom of the turntable 21. The output rod of the electric telescopic rod 25 is rotatably connected to the bottom of the connecting column 214. The connecting column 214 is inserted into the positioning shell 251. A second roller 24 is provided on one side of the first roller 23. When the electric telescopic rod 25 drives the turntable 21 to separate from the positioning shell 251, the first roller 23 is close to the test section 112, and the second roller 24 is away from the test section 112. During the test, the first roller 23 can only guide the test segment 112 in one direction. In order to test the test segment 112 in more directions, a second roller 24 is set on one side of the first roller 23. Activating the electric telescopic rod 25 can drive the turntable 21 to move downward, which can separate the first roller 23 from the test segment 112. At the same time, the second roller 24 contacts the test segment 112. At this time, the movement of the second limiting shell 13 and the third limiting shell 14 can drive the turntable 21 to rotate. Through the rotating rod 2, the second roller 24 is driven to push the test segment 112. At this time, the test segment 112 can be driven to bend laterally, thereby realizing the multi-directional bending test of the test segment 112.

[0029] like Figures 1 to 8 As shown, the second roller 24 is rotatably connected to the outside of the second bracket 241. A telescopic plate 242 is fixed to one side of the second bracket 241. The bottom end of the telescopic plate 242 is provided with teeth. The telescopic plate 242 is slidably connected to the inside of the first bracket 231. The inside of the rotating rod 2 is rotatably connected to the rotating rod 2. A gear is provided at one end of the rotating rod 243 near the telescopic plate 242. The gear meshes with the bottom end of the telescopic plate 242. A toothed plate 255 is provided above the positioning shell 251. The toothed plate 255 passes through the inside of the turntable 21. A gear is also provided at one end of the rotating rod 243 near the toothed plate 255. The gear meshes with the toothed plate 255. A coil spring 244 is fixed to the outside of the rotating rod 243. The other end of the coil spring 244 is fixedly connected to the rotating rod 2. With the turntable 21 separated from the positioning shell 251, the toothed plate 255 is inserted inside the turntable 21, and the telescopic plate 242 extends out from the inside of the first bracket 231. When the positioning shell 251 drives the turntable 21 to close, the toothed plate 255 is inserted into the rotating rod 2. At this time, the toothed plate 255 drives the rotating rod 243 to rotate, and the rotating rod 243 drives the telescopic plate 242 to move into the inside of the first bracket 231. At this time, the telescopic plate 242 drives the second bracket 241 to bring the second roller 24 close to the first roller 23. When the turntable 21 and the positioning shell 251 are closed, the second roller 24 contacts the surface of the test section 112. In this way, the first roller 23 and the second roller 24 can automatically move their positions, keeping the first roller 23 or the second roller 24 automatically separating from the test section 112 when in contact, preventing the first roller 23 or the second roller 24 from interfering with the bending of the test section 112 when in use.

[0030] like Figures 1 to 7 As shown, the bottom end of the connecting column 214 is provided with multiple positioning grooves 213 at equal intervals, and multiple limiting strips 252 are fixed inside the positioning shell 251 at equal intervals. The positioning grooves 213 can slide outside the limiting strips 252. When the second rack 221 needs to drive the first gear 22 to rotate, in order to maintain the stability of the turntable 21, a positioning groove 213 and a limiting strip 252 are slidably connected. When the second rack 221 drives the first gear 22 to rotate, the positioning groove 213 can be locked outside the limiting strip 252, so that the turntable 21 will not rotate at this time.

[0031] like Figures 1 to 8 As shown, a gear ring 211 is fixed to the outside of the turntable 21, and a first gear 212 is fixed on one side of the third limiting shell 14 below the second gear 221. The first gear 212 can mesh with the gear ring 211. When the positioning shell 251 drives the turntable 21 to fit tightly against the positioning shell 251, the first gear 22 and the second rack 221 separate. At this time, the gear ring 211 will mesh with the first rack 212. The movement of the third limiting shell 14 will drive the first rack 212 to drive the gear ring 211 to rotate, thereby causing the turntable 21 to drive the rotating rod 2 to rotate, and causing the second roller 24 to drive the test section 112 to bend laterally, so as to facilitate switching the connection state of the second rack 221 and the first rack 212.

[0032] like Figures 1 to 7 As shown, a rotating cavity 253 is provided inside the positioning shell 251 below the limiting strip 252, and the connecting column 214 can rotate inside the rotating cavity 253; When the turntable 21 is in close contact with the positioning shell 251, the positioning groove 213 separates from the limiting strip 252. At this time, the bottom of the connecting column 214 is rotatably connected to the inside of the rotating cavity 253, which allows the connecting column 214 to rotate.

[0033] like Figures 1 to 7 As shown, a rotating ring 254 is fixed to the bottom end of the toothed plate 255, and the rotating ring 254 is rotatably connected to the top end of the positioning shell 251. When the turntable 21 rotates, it will drive the toothed plate 255 to rotate. At this time, the toothed plate 255 rotates synchronously through the rotating ring 254, which can prevent the toothed plate 255 from interfering with the rotation of the turntable 21.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cable fatigue testing device, characterized in that: The test plate (1) includes a test plate (1), a second limiting shell (13) is provided on one side of the top of the test plate (1), a third limiting shell (14) is provided on one side of the second limiting shell (13), a test section (112) is provided between the second limiting shell (13) and the third limiting shell (14), a wire feeding assembly is provided inside the second limiting shell (13) and the third limiting shell (14), the two ends of the test section (112) are respectively fixed inside the second limiting shell (13) and the third limiting shell (14) through the wire feeding assembly, a pair of cutters (16) are respectively provided on the side of the third limiting shell (14) and the second limiting shell (13) away from each other, the two sets of cutters (16) are respectively connected to the positive and negative electrodes used for testing the equipment, a second motor (164) is provided on one side of the cutter (16), and a first motor (152) is installed inside the test plate (1). A rotating rod (2) is provided in the middle of the second limiting shell (13) and the third limiting shell (14). A second toothed rod (221) is fixed on one side of the third limiting shell (14). The second toothed rod (221) can be driven to rotate upward by 90°. The second rack (221) drives the rotating rod (2) to guide the bending direction of the test section (112).

2. The cable fatigue testing equipment according to claim 1, characterized in that: A cable take-up reel (11) is installed on one side of the top of the test plate (1). A first limiting shell (12) is provided on one side of the cable take-up reel (11). A wire feeding assembly is also provided inside the first limiting shell (12). The wire feeding assembly includes a third motor (17) installed on the top of a second limiting shell (13). A worm gear (171) is fixed to the end of the shaft of the third motor (17). Multiple sets of clamping rollers (173) rotate inside the second limiting shell (13). Worm wheels (172) are fixed to the top of the two sets of clamping rollers (173) near the worm gear (171). The worm gear (171) and the two worm wheels (172) are connected. The test plate (1) is connected by meshing. Slide grooves (15) are provided on both sides of the top of the test plate (1). Movable blocks (131) are fixed on both sides of the second limiting shell (13) and the third limiting shell (14). A first bidirectional threaded rod (151) is rotatably connected inside one of the slide grooves (15). The shaft end of the first motor (152) is fixedly connected to one end of the first bidirectional threaded rod (151). One of the movable blocks (131) is threadedly connected to the first bidirectional threaded rod (151). A guide rod is fixed inside the other slide groove (15). The movable block (131) on the other side is slidably connected to the guide rod.

3. The cable fatigue testing equipment according to claim 1, characterized in that: Each of the cutters (16) has a support plate (161) on one side. A second bidirectional threaded rod (162) is rotatably connected between the support plates (161). The second bidirectional threaded rod (162) is threadedly connected to the second bidirectional threaded rod (162). A second motor (164) is installed on one side of one of the support plates (161). The end of the shaft of the second motor (164) is fixedly connected to one end of the second bidirectional threaded rod (162). A slide rod (163) is fixed below between the two support plates (161). The cutter (16) is slidably connected to the slide rod (163).

4. The cable fatigue testing equipment according to claim 1, characterized in that: The end of the rotating rod (2) is fixed with a first bracket (231), and the first bracket (231) is rotatably connected with a first roller (23). The other end of the rotating rod (2) is rotatably connected with a turntable (21). The end of the rotating shaft of the rotating rod (2) is fixed with a first gear (22). The second rack (221) can mesh with the first gear (22), and the second rack (221) can drive the first gear (22) to rotate 90°.

5. The cable fatigue testing equipment according to claim 4, characterized in that: The top of the test plate (1) is fixed with a positioning shell (251) at the middle of the second limiting shell (13) and the third limiting shell (14). An electric telescopic rod (25) is installed inside the test plate (1). The output rod of the electric telescopic rod (25) extends into the positioning shell (251). A connecting column (214) is fixed at the bottom of the turntable (21). The output rod of the electric telescopic rod (25) is rotatably connected to the bottom of the connecting column (214). The connecting column (214) is inserted into the positioning shell (251). A second roller (24) is provided on one side of the first roller (23). When the electric telescopic rod (25) drives the turntable (21) to separate from the positioning shell (251), the first roller (23) is close to the test section (112), and the second roller (24) is away from the test section (112).

6. The cable fatigue testing equipment according to claim 5, characterized in that: The second roller (24) is rotatably connected to the outside of the second bracket (241). A telescopic plate (242) is fixed on one side of the second bracket (241). The bottom end of the telescopic plate (242) is provided with teeth. The telescopic plate (242) is slidably connected to the inside of the first bracket (231). The inside of the rotating rod (2) is rotatably connected to the rotating rod (2). The end of the rotating rod (243) near the telescopic plate (242) is provided with a gear. The gear meshes with the bottom end of the telescopic plate (242). A toothed plate (255) is provided above the positioning shell (251). The toothed plate (255) passes through the inside of the turntable (21). The end of the rotating rod (243) near the toothed plate (255) is also provided with a gear. The gear meshes with the toothed plate (255). A coil spring (244) is fixed to the outside of the rotating rod (243). The other end of the coil spring (244) is fixedly connected to the rotating rod (2).

7. The cable fatigue testing equipment according to claim 6, characterized in that: The bottom end of the connecting column (214) is provided with multiple positioning grooves (213) at equal intervals, and multiple limiting strips (252) are fixed at equal intervals inside the positioning shell (251). The positioning grooves (213) can slide outside the limiting strips (252).

8. The cable fatigue testing equipment according to claim 6, characterized in that: A gear ring (211) is fixed to the outside of the turntable (21), and a first gear (212) is fixed on one side of the third limiting shell (14) below the second gear (221). The first gear (212) can mesh with the gear ring (211).

9. The cable fatigue testing equipment according to claim 7, characterized in that: The positioning shell (251) has a rotating cavity (253) located below the limiting strip (252) inside, and the connecting column (214) can rotate inside the rotating cavity (253).

10. A cable fatigue testing device according to claim 9, characterized in that: A rotating ring (254) is fixed to the bottom end of the toothed plate (255), and the rotating ring (254) is rotatably connected to the top end of the positioning shell (251).

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