Cable deflection fatigue test device and system

Abstract

The invention provides a cable deflection fatigue test device and system. The cable deflection fatigue test device comprises a test platform, a bending assembly, a positioning assembly and a fixing assembly, the bending assembly comprises a driving motor, a connecting wheel arranged on an output shaft of the driving motor, a driving shaft arranged on the connecting wheel, a supporting block arranged on the top of the testing platform, and a movable plate movably connected to the supporting block and provided with the fixing assembly, wherein the axis of the driving shaft is eccentric relative to the axis of the connecting wheel, and the driving shaft rotates around the axis of the connecting wheel; the movable plate is provided with a guide groove formed in the outer side of the driving shaft, the driving motor drives the connecting wheel to rotate so as to drive the driving shaft to rotate around the axis of the connecting wheel in the guide groove, and the movable plate reciprocates in the direction from the supporting block to the positioning assembly in a passive mode. According to the invention, in the process of testing the cable, the consistency of each bending test of the cable is ensured, and the accuracy of the test result is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cable testing, and in particular to a cable disturbance fatigue testing device and system. Background Art

[0002] As a key component of power transmission, high-voltage cables are increasingly used in power transmission, communications, automobile manufacturing and other fields. Especially in industries such as new energy vehicles, aerospace, and shipbuilding, high-voltage cables are subjected to complex mechanical stresses, such as frequent bending, stretching, and torsion. These mechanical stresses can cause fatigue damage to cable materials, which in turn affects their service life and safety. Therefore, performing disturbance fatigue tests on cables can ensure that the cables meet relevant standards and requirements during the design and manufacturing process, thereby improving their quality and performance.

[0003] However, in the prior art, it is difficult to ensure the consistency of each bending test of the cable during the test of the cable by the device for performing disturbance fatigue test on the cable, which affects the accuracy of the test result.

[0004] In view of this, it is necessary to improve the cable disturbance fatigue testing device in the prior art to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to disclose a cable disturbance fatigue test device and system, which are used to solve the many defects existing in the cable disturbance fatigue test device in the prior art, especially to ensure the consistency of each bending test of the cable during the cable testing process and improve the accuracy of the test results.

[0006] To achieve the above-mentioned object, the present invention provides a cable disturbance fatigue test device, comprising: a test platform, a bending component configured on the test platform, a positioning component configured on the test platform and arranged opposite to the bending component, and a fixing component configured on the bending component and the positioning component to fix the two ends of the cable respectively;

[0007] The bending assembly includes: a driving motor, a connecting wheel configured on the output shaft of the driving motor, a driving shaft configured on the connecting wheel, the axis of the driving shaft is eccentric relative to the axis of the connecting wheel, the driving shaft rotates around the axis of the connecting wheel, a supporting block configured on the top of the test platform, and a movable plate movably connected to the supporting block and configured with the fixing assembly;

[0008] The movable plate is constructed with a guide groove formed on the outside of the driving shaft. The driving motor drives the connecting wheel to rotate, so as to drive the driving shaft to rotate around the axis of the connecting wheel in the guide groove. The movable plate reciprocates along the support block toward the positioning component in a passive manner.

[0009] As a further improvement of the present invention, the connecting wheel is constructed with multiple positioning holes for installing the driving shaft, the axis of the positioning holes is eccentric relative to the axis of the connecting wheel, and the eccentricity distance of the axis of each positioning hole relative to the axis of the connecting wheel is different.

[0010] As a further improvement of the present invention, a rotation support is axially sleeved on the outer side of the driving shaft, and the outer wall of the rotation support is in contact with the inner wall of the guide groove.

[0011] As a further improvement of the present invention, the positioning assembly includes: a vertical plate configured on the top of the test platform, a support plate movably connected to the vertical plate and configured with the fixed assembly, the support plate moves along the vertical plate to approach or move away from the bending assembly, and a locking member for preventing the support plate from moving along the vertical plate.

[0012] As a further improvement of the present invention, the fixing assembly includes: a fixing plate, and a fixing member fixed to the end of the cable and detachably connected to the fixing plate.

[0013] As a further improvement of the present invention, the cable disturbance fatigue testing device also includes: limit plates symmetrically arranged on both sides of the cable, and locking components configured on the limit plates to fix the multiple cables to the limit plates, and the fixing points formed by the locking components and each of the cables are formed in the same straight line.

[0014] As a further improvement of the present invention, a slide rail is disposed on the top of the vertical plate, and a slider that moves along the slide rail is disposed on the bottom of the support plate;

[0015] The locking member comprises: a movable block which is arranged on the support plate and formed on the outer side of the slide rail, and a tightening member which penetrates part of the movable block to resist the slide rail.

[0016] As a further improvement of the present invention, the positioning assembly also includes: a ruler configured on the vertical plate along the moving direction of the support plate and having an indicating scale, and a positioning pointer configured on the support plate and moving with the support plate to point to the indicating scale.

[0017] As a further improvement of the present invention, the fixing member forms an extension portion connected to the fixing plate;

[0018] The fixing plate includes: a first fixing plate configured on the movable plate, and a second fixing plate configured on the support plate, wherein the first fixing plate is constructed to have a first protrusion extending laterally across the movable plate and connected to the extension portion, and the second fixing plate is constructed to have a second protrusion extending laterally across the support plate and connected to the extension portion.

[0019] Based on the same inventive concept, the present application also discloses a cable disturbance fatigue testing system, including: a rack, and a cable disturbance fatigue testing device as disclosed in any of the aforementioned inventions and creations, which is configured on the rack.

[0020] Compared with the prior art, the beneficial effects of the present invention are: the reciprocating motion of the movable plate on the support block is precisely controlled by the rotational motion of the drive shaft through the guide groove, and the connecting wheel is driven to rotate at a constant speed by the driving motor, so that the frequency of each reciprocating motion of the movable plate is consistent, thereby ensuring that the frequency of each bending of the cable is consistent; the drive shaft is firmly mounted on the connecting wheel to prevent the drive shaft from loosening or displacing relative to the connecting wheel during high-speed rotation, so that the amplitude of each reciprocating motion of the movable plate is consistent, thereby ensuring that the angle of each bending of the cable is consistent, so as to achieve consistency in the frequency and angle of each cable bending test, thereby improving the reliability and accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of a cable disturbance fatigue testing device disclosed in the present invention;

[0022] Figure 2 A cross-sectional view showing the connection between the connecting wheel and the driving shaft;

[0023] Figure 3 for Figure 2 A partial enlarged view of the connection between the middle connecting wheel and the driving shaft;

[0024] Figure 4 A three-dimensional diagram showing the connection between the driving motor and the connecting wheel;

[0025] Figure 5 A schematic diagram of configuring a slide rail on the top of the vertical plate and a slider on the bottom of the support plate;

[0026] Figure 6 The present invention discloses a cable disturbance fatigue testing system including a cable disturbance fatigue testing device. DETAILED DESCRIPTION

[0027] The present invention is described in detail below in conjunction with the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in the field based on these embodiments are all within the scope of protection of the present invention.

[0028] Please refer to Figures 1 to 6 A specific implementation of a cable disturbance fatigue testing device and system is disclosed.

[0029] Ginseng Figure 1 As shown, in this embodiment, the cable disturbance fatigue test device 100 includes: a test platform 1, a bending component 2 configured on the test platform 1, a positioning component 3 configured on the test platform 1 and arranged opposite to the bending component 2, and a fixing component 4 configured on the bending component 2 and the positioning component 3 to fix the two ends of the cable 5 respectively. The bending component 2 and the positioning component 3 are configured on the test platform 1 together, the positioning component 3 is arranged opposite to the bending component 2 and fixes one end of the cable 5 through the fixing component 4b, and the bending component 2 fixes the other end of the cable 5 through the fixing component 4a, so as to perform a bending operation on the cable 5, thereby performing a disturbance fatigue test on the cable 5. The fixing components 4a and 4b ensure that the two ends of the cable 5 are firmly fixed during the test to prevent slipping or displacement.

[0030] Ginseng Figures 1 to 3 As shown, the bending assembly 2 includes: a driving motor 21, a connecting wheel 22 configured on the output shaft of the driving motor 21, a driving shaft 23 configured on the connecting wheel 22, and an axis ( Figure 2 The center axis A) is relative to the axis of the connecting wheel 22 ( Figure 2 The central axis B) is eccentric, and the driving shaft 23 rotates around the axis of the connecting wheel 22. A support block 24 is arranged on the top of the test platform 1, and a movable plate 25 is movably connected to the support block 24 and configured with a fixed component 4; the movable plate 25 is constructed with a guide groove 251 formed on the outer side of the driving shaft 23, and the driving motor 21 drives the connecting wheel 22 to rotate, so as to drive the driving shaft 23 to rotate around the axis of the connecting wheel 22 in the guide groove 251, and the movable plate 25 reciprocates along the support block 24 toward the positioning component 3 in a passive manner.

[0031] The driving motor 21 is started to drive the connecting wheel 22 to rotate. Since the axis of the driving shaft 23 is eccentric with respect to the axis of the connecting wheel 22, the connecting wheel 22 rotates to drive the driving shaft 23 to rotate around the axis of the connecting wheel 22 in the guide groove 251. Then, the rotation of the driving shaft 23 is transmitted to the movable plate 25 through the guide groove 251, so that the movable plate 25 passively reciprocates along the support block 24 toward the positioning assembly 3 (that is, the movable plate 25 moves along the support block 24). Figure 2The movable plate 25 is reciprocated in the transverse direction shown by the X-axis in the middle), so that the movable plate 25 repeatedly approaches or moves away from the positioning component 3, one end of the cable 5 is fixed to the positioning component 3 by the fixing component 4b and remains motionless, and the other end of the cable 5 is fixed to the movable plate 25. With the reciprocating motion of the movable plate 25, the other end of the cable 5 is driven to repeatedly approach or move away from one end of the cable 5, so that the cable 5 is repeatedly bent. The reciprocating motion of the movable plate 25 on the support block 24 is precisely controlled by the rotation of the drive shaft 23 through the guide groove 251, and the connecting wheel 22 is driven to rotate at a constant speed by the driving motor 21, so that the frequency of each reciprocating motion of the movable plate 25 is consistent, thereby ensuring that the frequency of each bending of the cable 5 is consistent. The drive shaft 23 is firmly mounted on the connecting wheel 22 to prevent the drive shaft 23 from loosening or displacement relative to the connecting wheel 22 during high-speed rotation, so that the amplitude of each reciprocating motion of the movable plate 25 is consistent, thereby ensuring that the angle of each bending of the cable 5 is consistent. In summary, the cable disturbance fatigue test device 100 can achieve the consistency of the frequency and angle of each bending test of the cable 5, thereby improving the reliability and accuracy of the test results.

[0032] Exemplarily, in this embodiment, the cable 5 is bent and deformed into a U-shape during the test, and the bent portion of the cable 5 is mainly concentrated at the U-shaped bottom 53. The U-shaped bottom 53 is repeatedly bent with the reciprocating motion of the movable plate 25. The U-shaped bottom 53 is the specific position where the cable 5 is subjected to the maximum stress and is most prone to fatigue damage during the test. By repeatedly bending the U-shaped bottom 53, the fatigue life and durability of the cable 5 in long-term use can be effectively evaluated.

[0033] Ginseng Figures 2 to 4As shown, the connecting wheel 22 is constructed with a plurality of positioning holes 221 for installing the drive shaft 23. The axis of the positioning hole 221 is eccentric relative to the axis of the connecting wheel 22, and the eccentric distance of the axis of each positioning hole 221 relative to the axis of the connecting wheel 22 is different. By coaxially passing the bolt 27 through the drive shaft 23 and extending into the positioning hole 221, it is ensured that the drive shaft 23 is firmly installed on the connecting wheel 22 to prevent loosening or displacement during high-speed rotation, thereby ensuring the stability and consistency of the test process. By selecting different positioning holes 221 to install the drive shaft 23, the eccentric distance of the drive shaft 23 can be adjusted, thereby adjusting the bending angle of the U-shaped bottom 53. By way of example, the eccentric distance of the axis of the positioning hole 221 relative to the axis of the connecting wheel 22 can be listed as: 10mm, 12.5mm, 15mm, ..., 40mm, etc. A larger eccentric distance will increase the reciprocating motion amplitude of the movable plate 25, thereby increasing the bending angle of the cable 5 at the U-shaped bottom 53, thereby reducing the closing distance (i.e., the width d of the U-shaped shape formed by the cable 5 when bending). A smaller eccentric distance will reduce the reciprocating motion amplitude of the movable plate 25, thereby reducing the bending angle of the cable 5 at the U-shaped bottom 53, thereby increasing the closing distance. By using a plurality of positioning holes 221 with different eccentric distances, the cable 5 can be tested with different closing distances, which can more accurately simulate the bending conditions of the cable 5 in different application scenarios and improve the accuracy of the test results.

[0034] Since cables 5 of different specifications and types may require different closing distances for fatigue testing, by selecting appropriate positioning holes 221, the closing distance of the cables 5 can be precisely controlled to adapt to cables of different specifications and types and ensure the consistency of each test. The same positioning holes 221 can ensure consistent conditions for each test, thereby improving the repeatability and accuracy of the test results, making the cable disturbance fatigue testing device 100 widely applicable and suitable for a variety of cable types and application scenarios.

[0035] Ginseng Figure 3 and Figure 4 As shown, a rotating support 26 (e.g., a bearing) is axially sleeved on the outer side of the drive shaft 23, and the outer wall of the rotating support 26 is fitted with the inner wall of the guide groove 251. By providing the rotating support 26, direct contact between the drive shaft 23 and the inner wall of the guide groove 251 is avoided, thereby reducing friction and wear. The rotating support 26 can rotate freely when the drive shaft 23 rotates, so that the movement of the drive shaft 23 in the guide groove 251 is smoother, and jamming and vibration are reduced. The outer wall of the rotating support 26 is tightly fitted with the inner wall of the guide groove 251, ensuring the precise guidance of the drive shaft 23 in the guide groove 251, preventing the drive shaft 23 from deflecting or shaking during movement, which is conducive to ensuring the consistency of each bending test and improving the accuracy of the test results.

[0036] Ginseng Figure 1 As shown, the positioning assembly 3 includes: a vertical plate 31 configured on the top of the test platform 1, a support plate 32 movably connected to the vertical plate 31 and configured with a fixing assembly 4, the support plate 32 moves along the vertical plate 31 to approach or move away from the bending assembly 2, and a locking member 33 for preventing the support plate 32 from moving along the vertical plate 31. By controlling the support plate 32 to move horizontally on the vertical plate 31, the fixed position of the end of the cable 5 connected to the fixing assembly 4b can be flexibly adjusted, thereby adjusting the bending radius of the cable 5. When the support plate 32 approaches the bending assembly 2, the bending radius of the cable 5 decreases; when the support plate 32 moves away from the bending assembly 2, the bending radius of the cable 5 increases, thereby adapting to the test of cables 5 of different lengths at different bending radii. And the locking member 33 can ensure that the support plate 32 can be firmly fixed after being adjusted in place, preventing the support plate 32 from being displaced along the vertical plate 31 during the test, ensuring the consistency of each test condition, so that the cable 5 is firmly fixed during the test, avoiding slippage or displacement, thereby improving the accuracy of the test results.

[0037] Ginseng Figures 1 to 3 As shown, the fixing assembly 4 includes: a fixing plate 41, a fixing member 42 fixed to the end of the cable 5 and detachably connected to the fixing plate 41. The fixing member 42 forms an extension portion 421 connected to the fixing plate 41 by bolts (not shown). The fixing plate 41 includes: a first fixing plate 411 configured on the movable plate 25, and a second fixing plate 412 configured on the support plate 32. The first fixing plate 411 is configured to have a first protrusion 4111 extending in the transverse direction through the movable plate 25 and connected to the extension portion 421, and the second fixing plate 412 is configured to have a second protrusion 4121 extending in the transverse direction through the support plate 32 and connected to the extension portion 421. By extending the first protrusion 4111 laterally over the movable plate 25 and the second protrusion 4121 laterally over the support plate 32, the cable 5 can avoid direct contact with the movable plate 25 and the support plate 32 during the test, thereby reducing friction and wear, and ensuring that the cable 5 can bend freely during the test to avoid being restricted or interfered by the movable plate 25 and the support plate 32, thereby more accurately simulating the bending condition of the cable 5 in actual use and improving the accuracy of the test results.

[0038] Ginseng Figure 1 and Figure 3As shown, the cable disturbance fatigue test device 100 also includes: a limit plate 61 symmetrically arranged on both sides of the cable 5, a locking assembly 62 configured on the limit plate 61 to fix multiple cables 5 to the limit plate 61, and the fixing point formed by the locking assembly 62 and each cable 5 is formed on the same straight line D. The cable 5 bent and deformed into a U shape also includes: a first branch 51 and a second branch 52 extending upward from the U-shaped bottom 53. The limit plate 61 includes: a first limit plate 611 configured on the first branch 51, and a second limit plate 612 configured on the second branch 52, and the first limit plate 611 and the second limit plate 612 are symmetrically arranged along the center line C of the U-shaped bottom 53. The first limit plate 611 and the second limit plate 612 can limit the maximum bending angle of the cable 5 to ensure that the radius of each bend is consistent. It also helps the cable 5 to maintain the correct alignment position during the test, ensure that the cable 5 moves on the predetermined path, and prevent the cable 5 from deviating from the predetermined path and accidentally leaving the test area during the test.

[0039] In this embodiment, preferably, Figure 3 As shown, the locking assembly 62 is configured as a strap 621, and a single cable 5 is fixed to the limiting plate 61 by the strap 621. The fixing points formed by the multiple straps 621 for each cable 5 are formed on the same straight line D, so as to prevent the multiple cables 5 from loosening or spreading during the test and keep the cables 5 neatly arranged. The strap 621 can also reduce the friction between the cables 5, prevent the cables 5 from wearing each other, and prevent the cables 5 from getting entangled with each other during the test.

[0040] Exemplarily, in some embodiments, the locking assembly 62 can be configured as a clamp (not shown) for fixing the cable 5, for example, a U-shaped clamp suitable for a single or multiple cables 5, and the cable 5 is fastened by a bolt or spring mechanism; the locking assembly 62 can also be configured as a buckle (not shown) that is suitable for a variety of cable 5 sizes and shapes and can be quickly inserted and removed, or a pressure plate (not shown) fixed to the limit plate 61 by bolts or screws to compress the cable 5, or even a throat clamp (not shown) that provides a high-strength fixing effect on the cable 5 to prevent the cable 5 from loosening during the test, and can adapt to cables 5 of different diameters and quantities by adjusting the tightening force.

[0041] Ginseng Figure 1 and Figure 5As shown, a slide rail 34 is arranged on the top of the vertical plate 31, and a slider 35 moving along the slide rail 34 is arranged on the bottom of the support plate 32; the locking member 33 includes: a movable block 331 arranged on the support plate 32 and formed on the outside of the slide rail 34, and a tightening member 332 penetrating a part of the movable block 331 to resist the slide rail 34. The tightening member 332 rotates relative to the movable block 331 to approach or move away from the slide rail 34. The support plate 32 slides with the slide rail 34 through the slider 35, so that the support plate 32 can move smoothly and accurately along the vertical plate 31, ensuring the stability and accuracy of the support plate 32 during the movement. The slider 35 moves along the slide rail 34 to flexibly adjust the position of the support plate 32, thereby changing the fixed position of one end of the cable 5, and then adjusting the bending radius of the cable 5. The tightening member 332 can be rotated to move closer to or farther from the slide rail 34. When the tightening member 332 approaches and abuts against the slide rail 34, sufficient friction or pressure can be generated to firmly lock the support plate 32 in the current position. The locking function of the tightening member 332 can ensure that the support plate 32 is fixed in the same position in each test, thereby improving the consistency and repeatability of the test results. The locked support plate 32 will not move due to external forces, ensuring that the fixed position of the cable 5 is stable during the test and improving the accuracy of the test.

[0042] In this embodiment, Figure 1 and Figure 2 As shown, a slide rail (not shown) is arranged on the top of the support block 24, and a slider (not shown) moving along the slide rail is arranged on the bottom of the movable plate 25. The combination of the slide rail and the slider can provide a linear guide for the movable plate 25, so that the movable plate 25 can smoothly and accurately reciprocate along the slide rail, reduce friction, improve the smoothness of the reciprocating motion of the movable plate 25, and ensure the straightness and stability of the movable plate 25 during the reciprocating motion, avoid deviation or shaking, and improve the consistency of the test results. In addition, the slide rail and the slider can enable the movable plate 25 to quickly respond to the rotation of the drive motor 21, thereby improving the response speed and efficiency of the test.

[0043] Ginseng Figure 1 and Figure 2As shown, the positioning assembly 3 also includes: a ruler 36 disposed on the vertical plate 31 along the moving direction of the support plate 32 and having an indicating scale (not shown), and a positioning pointer 37 disposed on the support plate 32 and moving with the support plate 32 to point to the indicating scale. The ruler 36 can provide a clear position reference, so that the operator can accurately read the current position of the support plate 32. Since the positioning pointer 37 moves with the support plate 32 and always points to the scale on the ruler 36, it provides real-time and intuitive position indication, does not require additional measuring tools, simplifies the operation process, reduces human reading errors, and improves the accuracy of test data. When the position of the support plate 32 needs to be adjusted, the required position can be quickly found according to the scale on the ruler 36 through the cooperation of the ruler 36 and the positioning pointer 37, ensuring that the same scale position can be accurately reached each time the support plate 32 is adjusted, improving work efficiency, and ensuring that the bending radius and the distance of the cable 5 reach the expected values, thereby improving the consistency and repeatability of the test results.

[0044] Based on the technical solution of a cable disturbance fatigue testing device 100 disclosed in the aforementioned embodiment, this embodiment further discloses a cable disturbance fatigue testing system 1000 .

[0045] Ginseng Figure 6 As shown, a cable disturbance fatigue test system 1000 includes: a rack 200, a cable disturbance fatigue test device 100 as disclosed in the above embodiment and arranged on the rack 200, and a human-machine interface (HMI) and a control system (not shown). The rack 200 serves as a supporting structure of the cable disturbance fatigue test system 1000, and is used to install and fix the cable disturbance fatigue test device 100 and other related components. The specific technical scheme of the cable disturbance fatigue test device 100 included in the cable disturbance fatigue test system 1000 in this embodiment refers to the above embodiment, which will not be repeated here.

[0046] The operator can easily set the test parameters, such as the number of bends, frequency, amplitude, etc., through the human-machine interface (not marked). The human-machine interface displays the test progress, current number, remaining number and other information in real time, which is convenient for the operator to monitor the test process. The cable disturbance fatigue test system 1000 will issue an alarm when an abnormal situation is detected, and provide corresponding prompt information through the human-machine interface to ensure the safety and reliability of the test. After the operator enters the number of test bends through the human-machine interface (not marked), the cable disturbance fatigue test system 1000 automatically starts the test process without manual intervention. The control system accurately controls the reciprocating motion of the movable plate 25 according to the set parameters to ensure the consistency and accuracy of each bend. When the set number of tests is reached, the cable disturbance fatigue test system 1000 automatically stops the test and prompts the operator through the human-machine interface. The cable disturbance fatigue test system 1000 automatically records key data during the test, such as the number of bends, time, frequency, etc. The recorded data can be exported or directly analyzed in the system to help evaluate the fatigue life and durability of the cable. The Cable Disturbance Fatigue Test System 1000 can automatically generate test reports including test parameters, results, data analysis, etc. for easy archiving and sharing.

[0047] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

[0048] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0049] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A cable disturbance fatigue test device, characterized in that: include: A test platform, a bending component configured on the test platform, a positioning component configured on the test platform and arranged opposite to the bending component, and a fixing component configured on the bending component and the positioning component to fix two ends of the cable respectively; The bending assembly includes: a driving motor, a connecting wheel configured on the output shaft of the driving motor, a driving shaft configured on the connecting wheel, the axis of the driving shaft is eccentric relative to the axis of the connecting wheel, the driving shaft rotates around the axis of the connecting wheel, a supporting block configured on the top of the test platform, and a movable plate movably connected to the supporting block and configured with the fixing assembly; The movable plate is constructed with a guide groove formed on the outside of the driving shaft. The driving motor drives the connecting wheel to rotate, so as to drive the driving shaft to rotate around the axis of the connecting wheel in the guide groove. The movable plate reciprocates along the support block toward the positioning component in a passive manner.

2. The cable disturbance fatigue testing device according to claim 1, characterized in that: The connecting wheel is constructed with a plurality of positioning holes for mounting the driving shaft, the axis of the positioning holes is eccentric relative to the axis of the connecting wheel, and the eccentric distance of the axis of each positioning hole relative to the axis of the connecting wheel is different.

3. The cable disturbance fatigue testing device according to claim 1, characterized in that: A rotating support is axially sleeved on the outer side of the driving shaft, and the outer wall of the rotating support is in contact with the inner wall of the guiding groove.

4. The cable disturbance fatigue testing device according to claim 1, characterized in that: The positioning assembly includes: a vertical plate configured on the top of the test platform, a support plate movably connected to the vertical plate and configured with the fixing assembly, the support plate moves along the vertical plate to approach or move away from the bending assembly, and a locking member for preventing the support plate from moving along the vertical plate.

5. The cable disturbance fatigue testing device according to claim 4, characterized in that: The fixing assembly comprises: a fixing plate, and a fixing member fixed to the end of the cable and detachably connected to the fixing plate.

6. The cable disturbance fatigue testing device according to claim 1, characterized in that: The cable disturbance fatigue testing device also includes: limit plates symmetrically arranged on both sides of the cable, and locking components configured on the limit plates to fix multiple cables to the limit plates, and the fixing points formed by the locking components and each cable are formed in the same straight line.

7. The cable disturbance fatigue testing device according to claim 4, characterized in that: The top of the vertical plate is provided with a slide rail, and the bottom of the support plate is provided with a slider that moves along the slide rail; The locking member comprises: a movable block which is arranged on the support plate and formed on the outer side of the slide rail, and a tightening member which penetrates part of the movable block to resist the slide rail.

8. The cable disturbance fatigue testing device according to claim 4, characterized in that: The positioning assembly further comprises: a ruler disposed on the vertical plate along the moving direction of the support plate and having an indicating scale, and a positioning pointer disposed on the support plate and moving with the support plate to point to the indicating scale.

9. The cable disturbance fatigue testing device according to claim 5, characterized in that: The fixing member forms an extension connected to the fixing plate; The fixing plate includes: a first fixing plate configured on the movable plate, and a second fixing plate configured on the support plate, wherein the first fixing plate is constructed to have a first protrusion extending laterally across the movable plate and connected to the extension portion, and the second fixing plate is constructed to have a second protrusion extending laterally across the support plate and connected to the extension portion.

10. A cable disturbance fatigue test system, characterized in that: include: A rack, and a cable disturbance fatigue testing device as described in any one of claims 1 to 9 configured on the rack.

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