Cable detection clamp, cable detection equipment and multi-cable service life detection method

Abstract

The invention relates to the technical field of parts of stress detection equipment, and discloses a cable detection clamp, cable detection equipment and a multi-cable service life detection method. According to the invention, the main cable clamp and each branch clamp can effectively clamp a main cable and each branch cable formed by branching of the main cable, and under the action of the guide pulley, the change of the pulling force direction of the main cable caused by the fact that the main cable clamp needs to be stably fixed is avoided. The cable detection clamp can effectively guarantee that the cable detection clamp can stably simulate the installation effect on the cable in the normal use process and can stably simulate the tension effect on the cable in the normal use process, and then the detection simulation accuracy and the detection precision of the clamping end on the cable are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of components of stress detection equipment, and specifically to a cable detection fixture, a cable detection equipment, and a multi-cable life detection method. Background Art

[0002] In high-end equipment fields such as medical devices, industrial robots, and aerospace, cable assemblies, as the core carriers for energy transmission and signal interaction, their reliability is directly related to the operation safety and service life of the whole equipment. Taking a medical bed as an example, its electric lifting, body position adjustment and other functional modules usually need to integrate dozens of power cables and signal cables. These cables need to perform multi-degree-of-freedom movements (including compound deformations such as torsion, bending, and stretching) with the robotic arm during the operation of the equipment. Actual working condition statistical data shows that about 68% of the electrical faults in medical devices are caused by cable fatigue damage, and typical failure modes such as joint contact failure, insulation layer rupture, and conductor fracture account for more than 90%.

[0003] However, traditional testing methods have significant defects in aspects such as simulating real working conditions, mapping damage mechanisms, and testing efficiency, resulting in the difficulty of meeting the stringent requirements of modern equipment for product reliability verification and life prediction accuracy. Traditional single-factor fatigue testing equipment usually adopts a simplified mechanical loading mode. For example, a periodic torsion with a fixed angle is applied to a single cable, and the durability is evaluated by recording the number of fracture cycles. In addition, the test procedures specified in existing standards do not fully consider the synergistic effect of the harness assembly. When multiple cables are arranged in parallel, the accumulation of frictional heat and electromagnetic interference will cause additional aging effects, and the impact of such group effects on the life cannot be reflected at all in the single-body test. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a cable detection fixture, a cable detection equipment, and a multi-cable life detection method.

[0005] To solve the above technical problems, the present invention provides the following technical solutions:

[0006] Cable detection fixture, including a main cable fixture and branch cable fixtures. Each of the branch cable fixtures includes a connecting plate and a number of branch fixtures. Each of the branch fixtures is slidably disposed on one side of the connecting plate close to the main cable fixture, and the distance between the central axes of each of the branch fixtures and the connecting plate can be independently adjusted; the main cable fixture is used for clamping the main cable. A guiding pulley is provided on one side of the main cable fixture. After the main cable extends from the main cable fixture, it can first bypass the guiding pulley. Each of the branch cables formed by the bifurcation of the main cable can be respectively clamped inside each of the branch fixtures; the main cable fixture and the connecting plate can be respectively installed at designated positions of the cable detection device, and the positional relationship between the main cable fixture and the connecting plate can be adjusted along with the detection process of the cable detection device.

[0007] Preferably, the branch fixture includes a fixture housing and a mounting hanging rod. The connecting plate is provided with a number of sliding grooves. On both sides of each of the sliding grooves, locking grooves are provided. At the bottom end inside the locking grooves, a number of locking holes are provided; the mounting hanging rod is slidably installed inside the sliding groove, and the mounting hanging rod can rotate inside the sliding groove. A locking telescopic link is provided through the center of the mounting hanging rod. At both ends of the locking telescopic link, telescopic locking columns are respectively provided; the telescopic locking columns can extend into any one of the locking holes inside the corresponding sliding groove. By adjusting the positions between the two telescopic locking columns, the included angle between the fixture housing and the center plane of the sliding groove can be adjusted.

[0008] Preferably, two clamping claws are slidably disposed inside the fixture housing. At the top ends of the two clamping claws, a spacing adjustment slider is provided. The ends of the spacing adjustment slider close to the two clamping claws are respectively embedded inside the two clamping claws. The top end of the fixture housing is rotatably connected to a spacing adjustment rotating rod. The spacing adjustment rotating rod is in gear engagement with the top end of the spacing adjustment slider; by rotating the spacing adjustment rotating rod, the spacing adjustment slider can be driven to rise and fall, and at the same time, the spacing between the two clamping claws can be adjusted.

[0009] Preferably, the main cable fixture includes a number of main cable fixture groups. Each main cable fixture group has a clamping direction. Each main cable fixture group clamps the main cable in the corresponding clamping direction. The included angle between the clamping directions of two adjacent main cable fixture groups is not less than 30°; each main cable fixture group includes a fixture connecting plate and two symmetrically arranged connecting supports. The fixture connecting plate and the connecting supports are slidably connected. An eccentric clamping rod is provided on one side of the connecting support; the two connecting supports can approach and move away from the middle position of the fixture connecting plate synchronously, and the two eccentric clamping rods can rotate synchronously to adjust the minimum distance between the two eccentric clamping rods.

[0010] Preferably, a limiting track is provided at the top end of the fixture connecting plate, a limiting support is provided in the center of the limiting track, and a distance adjustment screw is rotatably provided inside the limiting support; the bottom ends of the two connecting supports are both fitted with the limiting track, the two connecting supports are respectively arranged on both sides of the limiting support, and the distances between the two connecting supports and the limiting support are equal; the two ends of the distance adjustment screw are respectively threadedly connected to the two connecting supports, and the thread directions at the two ends of the distance adjustment screw are opposite; distance adjustment grips are provided at both ends of the distance adjustment screw. By rotating the distance adjustment grips, while driving the distance adjustment screw to rotate, the two connecting supports can be driven to approach and move away from the limiting support synchronously.

[0011] Preferably, a connecting support plate is provided on one side of the connecting support, a driving connecting rod is eccentrically provided at one end of the eccentric clamping rod close to the connecting support, and the driving connecting rod is rotatably connected to the connecting support plate; an angle adjustment toothed plate is slidably provided at the top end of the connecting support, an angle adjustment gear is provided at one end of the driving connecting rod away from the eccentric clamping rod, and the angle adjustment toothed plate is in gear engagement with the angle adjustment gear.

[0012] Preferably, the main cable fixture group further includes an angle adjustment screw, the angle adjustment screw respectively penetrates through the two connecting supports, and the angle adjustment screw includes a central telescopic section, two threaded sections and an angle adjustment handle; the two threaded sections are respectively arranged at both ends of the central telescopic section, and the telescopic degree of the central telescopic section can be adjusted according to the distance between the two connecting supports; a driving slider is fixedly provided on one side of the angle adjustment toothed plate, and the driving slider is in threaded engagement with the threaded section. The thread directions of the two threaded sections are opposite. By the angle adjustment handle, the two angle adjustment toothed plates can be driven to approach and move away synchronously, and the distance between the two eccentric clamping rods can be adjusted.

[0013] The cable detection device uses the above-mentioned cable detection fixture to clamp the cable, and is characterized in that it includes: a detection frame, a detection bottom plate is provided at the bottom end of the detection frame, and the main cable fixture is fixed on the top end of the detection bottom plate; a detection track is provided at the top end of the detection frame, a detection top plate is slidably provided inside the detection track, and a torque output mechanism is installed on the top end of the detection top plate; the torque output mechanism includes a torque output motor and a torque amplification component, an installation chuck is provided at the bottom end of the detection top plate, the installation chuck is rotatably connected to the connection plate, and the torque amplification component can drive the connection plate and the installation chuck to rotate out of position.

[0014] Preferably, a misalignment angle sensor and an offset frequency sensor are provided at the bottom end of the installation chuck, and a processing terminal is further provided at the top end of the detection rack. The misalignment angle sensor can measure the maximum misalignment angle of each rotation of the connection disk and the installation chuck, and the offset frequency sensor can measure the number of misalignments between the connection disk and the installation chuck. The processing terminal can measure the number of misalignments and the maximum misalignment angle of each rotation to evaluate the state of the cable.

[0015] A multi-cable life detection method uses the above-mentioned cable detection device to simultaneously detect the life of multiple cables, and includes the following steps:

[0016] Clamp the main cable in the main cable fixture, and after one end of the main cable extending out of the main cable fixture bypasses the guiding pulley, clamp each branch cable formed by the bifurcation of the main cable in the branch fixture respectively;

[0017] By adjusting the position of the detection top plate, keep the main cable in a straightened state;

[0018] The torque output motor drives the misaligned rotation between the connection disk and the installation chuck through the torque amplification component;

[0019] The processing terminal can measure the number of misalignments and the maximum misalignment angle of each rotation, evaluate the state of the cable and obtain the fatigue life of the cable.

[0020] Compared with the prior art, the present invention provides a cable detection fixture, a cable detection device and a multi-cable life detection method, which have the following beneficial effects:

[0021] 1. For this cable detection fixture, by clamping the main cable in the main cable fixture, and after one end of the main cable extending out of the main cable fixture bypasses the guiding pulley, clamping each branch cable formed by the bifurcation of the main cable in the branch fixture respectively, it can effectively clamp the main cable and each branch cable formed by the bifurcation of the main cable through the main cable fixture and each branch fixture respectively, and under the action of the guiding pulley, avoid the change of the pulling force direction on the main cable caused by the need for stable fixation of the main cable fixture, and can effectively ensure that this kind of cable detection fixture can stably simulate the installation effect on the cable during normal use, and can stably simulate the pulling force on the cable during normal use, thereby ensuring the detection simulation accuracy and detection precision of the cable at the clamping end.

[0022] 2. The cable detection fixture can adjust the distance between two clamping jaws by turning the distance adjustment lever, which drives the lifting of the distance adjustment slider and simultaneously adjusts the distance between the two clamping jaws. Then, the branch cable can be stably clamped by the two clamping jaws. After clamping, when it is necessary to adjust each branch fixture according to the length of each branch cable, the position can be adjusted by inserting the two telescopic locking columns of the branch fixture into the locking holes at the corresponding positions inside the sliding grooves respectively. Thus, the position of the branch fixture in the corresponding sliding groove can be adjusted, and the angle between the branch fixture and the central plane of the corresponding sliding groove can also be adjusted. By sequentially adjusting each branch fixture, it is possible to match the different lengths of the clamped branch cables and adapt to the relative angles of each branch cable during actual use. Furthermore, it can more effectively simulate the installation state of each branch cable during actual use, and effectively ensure the accuracy in the subsequent cable detection process.

[0023] 3. For this cable detection fixture, each main cable fixture group can approach and move away from the middle position of the fixture connecting plate synchronously through two connecting supports. The two eccentric clamping rods can rotate synchronously to adjust the minimum distance between the two eccentric clamping rods, and clamp the main cable respectively. And through the setting of multiple main cable fixture groups, the main cable can be clamped more stably, avoiding the loosening between the main cable and the main cable fixture. Through the setting of the guiding pulley, the change in the pulling force direction on the main cable caused by the need to stably fix the main cable fixture can be avoided.

[0024] 4. For this cable detection fixture, first, by rotating the distance adjustment grip, the distance adjustment screw can be driven to rotate, and at the same time, the two connecting supports can be driven to approach and move away from the limit support synchronously to roughly adjust the distance between the two connecting supports. Then, by the angle adjustment handle, the two angle adjustment toothed plates can be driven to approach and move away synchronously, and the distance between the two eccentric clamping rods can be adjusted, and the minimum distance between the two eccentric clamping rods can be adjusted, which can improve the effectiveness of clamping the main cable and ensure the detection effect on the cable.

[0025] 5. This cable detection device can accurately obtain the fatigue damage degree of the wire harness by simulating the fatigue damage degree under different working states of the wire harness and simulating the braking action during the actual operation of the product. During the test process, it can ensure accurate and stable rotation, reduce the influence of other factors on the test results. The processing terminal can measure the number of misalignment times and the maximum misalignment angle of each rotation, evaluate the state of the cable, and obtain the service life of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is one of the three-dimensional structure diagrams of the cable detection device of the present invention;

[0027] Figure 2The second three-dimensional structure diagram of the cable detection device of the present invention;

[0028] Figure 3 The first three-dimensional structure diagram of the branch cable clamp and torque output mechanism of the present invention;

[0029] Figure 4 The second three-dimensional structure diagram of the branch cable clamp and torque output mechanism of the present invention;

[0030] Figure 5 The first three-dimensional structure diagram of the branch clamp of the present invention;

[0031] Figure 6 The second three-dimensional structure diagram of the branch clamp of the present invention;

[0032] Figure 7 The first three-dimensional structure diagram of the main cable clamp of the present invention;

[0033] Figure 8 The second three-dimensional structure diagram of the main cable clamp of the present invention.

[0034] In the figure: 1. Main cable clamp; 11. Clamp connecting plate; 111. Limit track; 112. Limit support; 113. Distance adjustment screw; 114. Distance adjustment grip; 12. Connecting support; 121. Connecting support plate; 122. Angle adjustment toothed plate; 13. Eccentric clamping rod; 131. Driving connecting rod; 132. Angle adjustment gear; 14. Angle adjustment screw; 141. Central telescopic section; 142. Thread section; 143. Angle adjustment handle; 2. Branch cable clamp; 21. Connecting disk; 211. Sliding groove; 212. Locking groove; 213. Locking hole; 22. Branch clamp; 221. Clamp housing; 222. Installation suspension rod; 223. Locking connecting rod; 224. Telescopic locking column; 225. Clamping claw; 226. Spacing adjustment slider; 227. Spacing adjustment rotating rod; 3. Guide pulley; 4. Detection frame; 41. Detection bottom plate; 42. Detection track; 43. Detection top plate; 5. Torque output mechanism; 51. Torque output motor; 52. Torque amplification component; 53. Installation chuck. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] As introduced in the background art, there are deficiencies in the prior art. To solve the above technical problems, the present application proposes a cable detection fixture, a cable detection device, and a multi-cable life detection method.

[0037] Embodiment 1:

[0038] Please refer to Figures 1-8 , a cable detection fixture, including a main cable fixture 1 and a branch cable fixture 2. Each branch cable fixture 2 includes a connection plate 21 and a plurality of branch fixtures 22. Each branch fixture 22 is slidably disposed on one side of the connection plate 21 close to the main cable fixture 1, and the distance between the central axes of each branch fixture 22 and the connection plate 21 can be independently adjusted; the main cable fixture 1 is used to clamp the main cable. A guiding pulley 3 is provided on one side of the main cable fixture 1. After the main cable extends from the main cable fixture 1, it can first bypass the guiding pulley 3. Each branch cable formed by the bifurcation of the main cable can be respectively clamped inside each branch fixture 22; the main cable fixture 1 and the connection plate 21 can be respectively installed at designated positions of the cable detection device, and the positional relationship between the main cable fixture 1 and the connection plate 21 can be adjusted according to the detection process of the cable detection device.

[0039] During use, by clamping the main cable inside the main cable fixture 1, and after one end of the main cable extending from the main cable fixture 1 bypasses the guiding pulley 3, each branch cable formed by the bifurcation of the main cable is respectively clamped inside the branch fixture 22, so as to be able to effectively clamp the main cable and each branch cable formed by the bifurcation of the main cable respectively through the main cable fixture 1 and each branch fixture 22. And under the action of the guiding pulley 3, it is possible to avoid the change in the pulling force direction on the main cable caused by the need for the main cable fixture 1 to be stably fixed, which can effectively ensure that this kind of cable detection fixture can stably simulate the installation effect of the cable during normal use and can stably simulate the pulling force on the cable during normal use, thereby ensuring the detection simulation accuracy and detection precision of the cable at the clamping end.

[0040] Embodiment 2:

[0041] Please refer to Figures 1-8, the difference from the above embodiment is that the branch clamp 22 includes a clamp housing 221 and a mounting suspension rod 222. The connecting plate 21 is provided with a plurality of sliding grooves 211, and locking grooves 212 are arranged on both sides of each sliding groove 211. A plurality of locking holes 213 are arranged at the inner bottom end of the locking groove 212; the mounting suspension rod 222 is slidably installed inside the sliding groove 211, and the mounting suspension rod 222 can rotate inside the sliding groove 211. A locking telescopic link 223 is arranged through the center of the mounting suspension rod 222, and telescopic locking columns 224 are respectively arranged at both ends of the locking telescopic link 223; the telescopic locking columns 224 can extend into any one of the locking holes 213 inside the corresponding sliding groove 211, and the included angle between the clamp housing 221 and the center plane of the sliding groove 211 can be adjusted by adjusting the position between the two telescopic locking columns 224.

[0042] Two clamping claws 225 are slidably arranged inside the clamp housing 221. Spacing adjustment sliders 226 are arranged at the tops of the two clamping claws 225. One end of each spacing adjustment slider 226 close to the two clamping claws 225 is respectively embedded inside the two clamping claws 225. A spacing adjustment rotating rod 227 is rotatably connected to the top of the clamp housing 221, and the spacing adjustment rotating rod 227 is in gear engagement with the top of the spacing adjustment slider 226; by rotating the spacing adjustment rotating rod 227, the spacing adjustment slider 226 can be driven to lift and lower, and at the same time, the spacing between the two clamping claws 225 can be adjusted.

[0043] During use, by pulling the spacing adjustment rotating rod 227, the spacing adjustment slider 226 can be driven to lift and lower while driving the spacing between the two clamping claws 225 to be adjusted. Furthermore, the branch cable can be stably clamped by the two clamping claws 225. After clamping, when it is necessary to adjust each branch clamp 22 according to the length of each branch cable, the position of the two telescopic locking columns 224 of the branch clamp 22 can be respectively embedded into the locking holes 213 inside the corresponding sliding grooves 211 for adjustment. Thus, the position of the branch clamp 22 in the corresponding sliding groove 211 can be adjusted, and the included angle between the branch clamp 22 and the center plane of the corresponding sliding groove 211 can also be adjusted. Therefore, while the different lengths of the branch cables to be clamped can be matched by sequentially adjusting each branch clamp 22, the relative angles of each branch cable during actual use can be adapted. Furthermore, the installation state of each branch cable during actual use can be more effectively simulated, and the accuracy during the subsequent cable detection process can be effectively guaranteed.

[0044] Embodiment Three:

[0045] Please refer to Figures 1-8, different from the above embodiments, the main cable clamp 1 includes a plurality of main cable clamp groups. Each main cable clamp group has a clamping direction, and each main cable clamp group clamps the total route cable in the corresponding clamping direction. The included angle between the clamping directions of two adjacent main cable clamp groups is not less than 30°; each main cable clamp group includes a clamp connecting plate 11 and two symmetrically arranged connecting supports 12. The clamp connecting plate 11 is slidably connected to the connecting support 12, and an eccentric clamping rod 13 is arranged on one side of the connecting support 12; the two connecting supports 12 can approach and move away from the middle position of the clamp connecting plate 11 synchronously, and the two eccentric clamping rods 13 can rotate synchronously to adjust the minimum distance between the two eccentric clamping rods 13.

[0046] When in use, each main cable clamp group can approach and move away from the middle position of the clamp connecting plate 11 synchronously through the two connecting supports 12, and the two eccentric clamping rods 13 can rotate synchronously to adjust the minimum distance between the two eccentric clamping rods 13, respectively clamping the total route cable. And through the setting of multiple main cable clamp groups, the total route cable can be clamped more stably, avoiding the loosening between the total route cable and the main cable clamp 1. And through the setting of the guiding pulley 3, the change of the pulling force direction on the total route cable caused by the need for the main cable clamp 1 to be stably fixed is avoided.

[0047] A limiting track 111 is arranged at the top end of the clamp connecting plate 11, a limiting support 112 is arranged in the center of the limiting track 111, and a distance adjustment screw rod 113 is rotatably arranged inside the limiting support 112; the bottom ends of the two connecting supports 12 are both fitted with the limiting track 111, the two connecting supports 12 are respectively arranged on both sides of the limiting support 112, and the distances between the two connecting supports 12 and the limiting support 112 are equal; the two ends of the distance adjustment screw rod 113 are respectively threadedly connected to the two connecting supports 12, and the thread directions at both ends of the distance adjustment screw rod 113 are opposite; distance adjustment grips 114 are arranged at both ends of the distance adjustment screw rod 113. By rotating the distance adjustment grips 114, while driving the distance adjustment screw rod 113 to rotate, the two connecting supports 12 can be driven to approach and move away from the limiting support 112 synchronously.

[0048] A connecting support plate 121 is arranged on one side of the connecting support 12, a driving connecting rod 131 is eccentrically arranged at one end of the eccentric clamping rod 13 close to the connecting support 12, and the driving connecting rod 131 is rotatably connected to the connecting support plate 121; an angle adjustment toothed plate 122 is slidably arranged at the top end of the connecting support 12, an angle adjustment gear 132 is arranged at one end of the driving connecting rod 131 away from the eccentric clamping rod 13, and the angle adjustment toothed plate 122 is in gear engagement with the angle adjustment gear 132.

[0049] The main cable fixture group further includes an angle adjustment screw 14 which passes through the two connecting supports 12 respectively. The angle adjustment screw 14 includes a central telescopic section 141, two threaded sections 142 and an angle adjustment handle 143. The two threaded sections 142 are respectively arranged at both ends of the central telescopic section 141, and the telescopic degree of the central telescopic section 141 can be adjusted according to the distance between the two connecting supports 12. A driving slider 123 is fixedly arranged on one side of the angle adjustment tooth plate 122, and the driving slider 123 is in threaded engagement with the threaded section 142. The thread directions of the two threaded sections 142 are opposite. By rotating the angle adjustment handle 143, the two angle adjustment tooth plates 122 can be driven to approach and move away synchronously, and the distance between the two eccentric clamping rods 13 can be adjusted.

[0050] During use, first, by rotating the distance adjustment grip 114, the distance adjustment screw 113 can be driven to rotate, and at the same time, the two connecting supports 12 can be driven to approach and move away from the limit support 112 synchronously, so as to roughly adjust the distance between the two connecting supports 12 (the distance between the two eccentric clamping rods 13). Then, by rotating the angle adjustment handle 143, the two angle adjustment tooth plates 122 can be driven to approach and move away synchronously, and the distance between the two eccentric clamping rods 13 can be adjusted. The minimum distance between the two eccentric clamping rods 13 can be adjusted. In actual use, the two eccentric clamping rods 13 can be set as elastic members, so that the deformation of the elastic members can improve the effectiveness of the total route cable clamping, and at the same time, damage to the external protective layer of the total route cable can be avoided, and the detection effect on the total route cable can be more effectively improved.

[0051] Embodiment 4:

[0052] Please refer to Figures 1-8 , a cable detection device, which uses the cable detection fixture described in any one of Embodiments 1-3 to clamp the cable. The cable detection device is characterized in that it includes: a detection frame 4, a detection bottom plate 41 is arranged at the bottom end of the detection frame 4, and the main cable fixture 1 is fixed at the top end of the detection bottom plate 41; a detection track 42 is arranged at the top end of the detection frame 4, a detection top plate 43 is slidably arranged inside the detection track 42, and a torque output mechanism 5 is installed at the top end of the detection top plate 43. The torque output mechanism 5 includes a torque output motor 51 and a torque amplification assembly 52. An installation chuck 53 is arranged at the bottom end of the detection top plate 43, and the installation chuck 53 is rotatably connected with the connection plate 21. The torque amplification assembly 52 can drive the connection plate 21 and the installation chuck 53 to rotate out of alignment.

[0053] A misalignment angle sensor and an offset count sensor are provided at the bottom end of the mounting chuck 53, and a processing terminal is also provided at the top end of the detection rack 4. The misalignment angle sensor can measure the maximum misalignment angle of each rotation between the connection plate 21 and the mounting chuck 53, and the offset count sensor can measure the number of misalignments between the connection plate 21 and the mounting chuck 53. The processing terminal can measure the number of misalignments and the maximum misalignment angle of each rotation to evaluate the state of the cable.

[0054] During use, the torque amplification assembly 52 adopts a belt drive structure to amplify the torque output by the torque output motor 51, enabling the connection plate 21 to have a greater driving force, being able to more effectively simulate the braking action during formal operation, achieving the purpose of precise and stable belt rotation. Specifically during use, an origin sensing sensor is also provided at the bottom end of the mounting chuck 53. By randomly placing the product to be tested, there is no need to set high-precision requirements for the placement and parking positions of the product to be detected. It can determine the rotation origin of the connection plate 21 before the start of detection, thus avoiding the detection errors of the misalignment angle sensor and the offset count sensor. The processing terminal can measure the number of misalignments and the maximum misalignment angle of each rotation, evaluate the state of the cable, and obtain the service life of the cable. Through this cable detection device, it is possible to accurately know the fatigue damage degree of the wire harness by simulating the fatigue damage degree under different working states of the wire harness and simulating the braking action during the actual product operation, and ensure precise and stable belt rotation during the test process, reducing the influence of other factors on the test results.

[0055] Embodiment Five:

[0056] A multi-cable life detection method uses the cable detection device described in Embodiment Four to simultaneously detect the lives of multiple cables, including the following steps:

[0057] Clamp the main cable in the main cable fixture 1, and after one end of the main cable extending out of the main cable fixture 1 bypasses the guiding pulley 3, clamp each branch cable formed by the bifurcation of the main cable in the branch fixture 22 respectively;

[0058] By adjusting the position of the detection top plate 43, keep the main cable in a straightened state;

[0059] The torque output motor 51 drives the connection plate 21 and the mounting chuck 53 to rotate misalignedly through the torque amplification assembly 52;

[0060] The processing terminal can measure the number of misalignments and the maximum misalignment angle of each rotation, evaluate the state of the cable and obtain the fatigue life of the cable.

[0061] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cable detection fixture, including a main cable fixture and a branch cable fixture, each of which includes a connection plate and a plurality of branch fixtures, characterized in that: Each of the branch clamps is slidably arranged on a side of the connection plate close to the main cable clamp, and the distance between each of the branch clamps and the central axis between the connection plate can be adjusted independently; The main cable clamp is used to clamp the main line cable. A guide pulley is provided on one side of the main cable clamp. After the main line cable extends from the main cable clamp, it can first pass around the guide pulley. Each branch cable formed by the forking of the main line cable can be clamped in each branch clamp respectively. The main cable clamp and the connection plate can be respectively installed at designated positions of a cable detection device, and the positional relationship between the main cable clamp and the connection plate can be adjusted along with the detection process of the cable detection device.

2. The cable detection fixture according to claim 1, characterized in that: The branch clamp comprises a clamp housing and a mounting suspension rod, the connection plate is provided with a plurality of sliding grooves, each of the sliding grooves is provided with locking grooves on both sides, and the bottom end of the locking groove is provided with a plurality of locking holes; The mounting boom is slidably mounted inside the sliding groove, and the mounting boom can rotate inside the sliding groove, a locking telescopic connecting rod is provided through the center of the mounting boom, and telescopic locking columns are provided at both ends of the locking telescopic connecting rod; The telescopic locking column can extend into any one of the locking holes in the corresponding sliding groove, and the angle between the clamp housing and the central plane of the sliding groove can be adjusted by adjusting the position between the two telescopic locking columns.

3. The cable detection fixture according to claim 2, characterized in that: Two clamping claws are slidably arranged inside the clamp housing, and spacing adjustment sliders are arranged at the top ends of the two clamping claws. One end of the spacing adjustment slider close to the two clamping claws is respectively embedded in the two clamping claws. A spacing adjustment rotating rod is rotatably connected to the top end of the clamp housing, and the spacing adjustment rotating rod is gear-engaged with the top ends of the spacing adjustment sliders. The spacing adjustment rotating rod can be rotated to drive the spacing adjustment sliding block to move up and down, and the spacing between the two clamping claws can be adjusted at the same time.

4. The cable detection fixture according to claim 1, characterized in that: The main cable clamp comprises a plurality of main cable clamp groups, each of which has a clamping direction, and each of which clamps the main line cable in the corresponding clamping direction, and the angle between the clamping directions of two adjacent main cable clamp groups is not less than 30°; Each main cable clamp group includes a clamp connection plate and two symmetrically arranged connection supports, the clamp connection plate is slidably connected to the connection supports, and an eccentric clamp rod is arranged on one side of the connection supports; The two connecting supports can synchronously approach and move away from the middle position of the clamp connecting plate, and the two eccentric clamping rods can synchronously rotate to adjust the minimum distance between the two eccentric clamping rods.

5. The cable detection fixture according to claim 4, characterized in that: A limit track is arranged at the top of the clamp connection plate, a limit support is arranged at the center of the limit track, and a distance adjustment screw is rotatably arranged inside the limit support; The bottom ends of the two connecting supports are both fitted with the limiting rails, the two connecting supports are respectively arranged on both sides of the limiting support, and the distances between the two connecting supports and the limiting support are equal; The two ends of the distance adjustment screw are respectively threadedly connected to the two connection supports, and the thread directions of the two ends of the distance adjustment screw are opposite; Distance adjustment handles are provided at both ends of the distance adjustment screw. By rotating the distance adjustment handles, the distance adjustment screw can be driven to rotate, and the two connecting supports can be driven to move toward and away from the limit support synchronously.

6. The cable detection fixture according to claim 5, characterized in that: A connecting support plate is provided on one side of the connecting support, a driving connecting rod is eccentrically provided on one end of the eccentric clamping rod close to the connecting support, and the driving connecting rod is rotatably connected to the connecting support plate; An angle adjustment tooth plate is slidably provided at the top end of the connecting support, an angle adjustment gear is provided at one end of the driving connecting rod away from the eccentric clamping rod, and the angle adjustment tooth plate is meshed with the angle adjustment gear.

7. The cable detection fixture according to claim 6, characterized in that: The main cable clamp assembly also includes an angle adjustment screw, which passes through the two connecting supports respectively, and includes a central telescopic section, two threaded sections and an angle adjustment handle; The two threaded sections are respectively arranged at two ends of the central telescopic section, and the telescopic degree of the central telescopic section can be adjusted according to the distance between the two connecting supports; A driving slider is fixedly provided on one side of the angle adjustment tooth plate, and the driving slider is threadedly engaged with the threaded segment. The thread directions of the two threaded segments are opposite. The angle adjustment handle can drive the two angle adjustment tooth plates to move closer and farther synchronously, and drive the distance between the two eccentric clamping rods to be adjusted.

8. A cable detection device, using the cable detection clamp as described in any one of claims 1 to 7 to clamp the cable, characterized in that: include: A detection rack, wherein a detection bottom plate is disposed at the bottom end of the detection rack, and the main cable clamp is fixed on the top end of the detection bottom plate; The top of the detection frame is provided with a detection track, a detection top plate is slidably provided inside the detection track, and a torque output mechanism is installed on the top of the detection top plate; The torque output mechanism includes a torque output motor and a torque amplification component. A mounting chuck is provided at the bottom end of the detection top plate. The mounting chuck is rotationally connected to the connecting disk. The torque amplification component can drive the connecting disk and the mounting chuck to rotate in an offset manner.

9. The cable detection device according to claim 8, characterized in that: A misalignment angle sensor and an offset number sensor are arranged at the bottom of the mounting chuck, and a processing terminal is also arranged at the top of the detection frame. The misalignment angle sensor can measure the maximum misalignment angle of each rotation between the connecting disk and the mounting chuck, and the offset number sensor can measure the number of misalignments between the connecting disk and the mounting chuck. The processing terminal can measure the number of misalignments and the maximum misalignment angle of each rotation to evaluate the status of the cable.

10. A multi-cable life detection method, characterized in that: Using the cable detection device as described in any one of claims 8 to 9 to simultaneously perform life detection on multiple cables, the method comprises the following steps: Clamp the main line cable in the main cable clamp, extend one end of the main line cable out of the main cable clamp and pass it around the guide pulley, then clamp each branch cable formed by the fork of the main line cable in the branch clamp respectively; By adjusting the position of the detection top plate, the main line cable is in a straight state; The torque output motor drives the connection disk and the mounting chuck to rotate displacedly through the torque amplification component; The processing terminal can count the number of misalignments and the maximum misalignment angle per rotation, evaluate the condition of the cable and obtain the fatigue life of the cable.

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