A cable swing test device

Abstract

The application discloses a swing test device of a cable and relates to the technical field of cable fatigue test; the swing test device comprises a rack, a wire clamp assembly, a swing mechanism and a tensioning mechanism, the wire clamp assembly, the swing mechanism and the tensioning mechanism are arranged on the rack along a first direction; the wire clamp assembly comprises first clamping blocks and second clamping blocks which are detachably connected, and the first clamping blocks and the second clamping blocks enclose a clamping groove for clamping and fixing a cable; the cable passes through the swing mechanism and is connected with the tensioning mechanism, the tensioning mechanism provides a force to the cable in a direction away from the wire clamp assembly; one end of the cable connected with the tensioning mechanism is movably arranged along the first direction, the cable can slide relative to the swing mechanism, and the swing mechanism is used for driving the cable to swing back and forth; the wire clamp assembly can be adjusted in position on the rack along a second direction, and the second direction is perpendicular to the first direction. The application can simulate the working condition of the cable in actual installation and application, the cable swing test has less limitations, and the cable test effect is better.

Description

Technical Field

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

[0002] Cable swing test rigs simulate actual cable installation conditions. They assess cable life under these conditions by performing fatigue tests. These rigs typically consist of a fixture that secures the cable and a rocker mechanism that drives the cable's swing.

[0003] Chinese utility model patent publication number CN208000250U discloses a coaxial cable fatigue performance testing device, comprising a frame, a rotating plate, a clamping mechanism, a motor, and a bending limiter. The patent describes a device that secures the cable to the frame using a clamping mechanism, with the other end of the cable secured to the rotating plate. A motor drives the rotating plate to rotate back and forth, causing the cable to swing back and forth, thus performing a bending fatigue test on the cable.

[0004] In the above solution, the rotating plate can only drive the cable to bend symmetrically back and forth. The bending and swinging angle of the cable is fixed, which cannot fully simulate the state of the cable in actual application and has limitations in use. Moreover, its clamping mechanism is different from the wire clamp assembly used when the cable is actually installed, and cannot simulate the stress concentration at the cable clamping point. Summary of the Invention

[0005] The purpose of the present invention is to provide a cable swing test device, which can better simulate the working conditions of the cable during actual installation and application, so that the cable swing test has fewer limitations and the cable testing effect is better.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] The present invention provides a cable swing test device for fatigue testing of cables. The cable swing test device comprises a frame, a wire clamp assembly, a swing mechanism, and a tensioning mechanism. The wire clamp assembly, the swing mechanism, and the tensioning mechanism are sequentially arranged on the frame at intervals along a first direction.

[0008] The cable clamp assembly includes a first clamping block and a second clamping block that are detachably connected, the first clamping block and the second clamping block enclosing a clamping groove for clamping and fixing the cable; the cable passes through the swing mechanism and is connected to the tensioning mechanism, and the tensioning mechanism provides a force for the cable in a direction away from the cable clamp assembly; the end of the cable connected to the tensioning mechanism is movably arranged in a first direction, and the cable can slide relative to the swing mechanism, and the swing mechanism is used to drive the cable to swing back and forth;

[0009] The position of the wire clamp assembly can be adjusted along a second direction on the frame, wherein the second direction is perpendicular to the first direction.

[0010] In this embodiment, the oscillation test device secures the cable to the frame via a clamp assembly. The clamp assembly comprises a first clamping block and a second clamping block to form a clamping groove, which secures the cable. This fully simulates the actual operation of the cable clamp during use, and can better simulate the stress concentration experienced during cable installation and use. The clamp assembly, swing mechanism, and tensioning mechanism are sequentially arranged along a first direction. The end of the cable away from the clamp assembly passes through the swing mechanism and then connects to the tensioning mechanism. The tensioning mechanism applies a force away from the clamp assembly to maintain tension on the cable. Simultaneously, the end of the cable connected to the tensioning mechanism is movable along the first direction, allowing the swing mechanism to drive the cable to swing back and forth around the clamp assembly, thereby performing fatigue testing on the cable. The clamp assembly is adjustable in a second direction perpendicular to the first direction, thereby adjusting the angle between the line connecting the clamp assembly and the swing mechanism and the first direction. This in turn changes the angle at which the cable swings relative to the clamp assembly when the swing mechanism drives the cable to swing. This supports asymmetric cable swing testing and enables fatigue testing of the cable at various swing angles. This reduces limitations during cable swing testing and improves cable testing results.

[0011] Furthermore, the frame is provided with a first adjustment slot along the second direction, and a T-shaped bolt is provided in the first adjustment slot; the wire clamp assembly also includes an adjustment seat fixedly connected to the first clamping block and / or the second clamping block, and a first connecting hole is provided on the adjustment seat, and the T-shaped bolt passes through the first adjustment slot and the first connecting hole and is locked by a nut.

[0012] In this solution, the adjustment base of the wire clamp assembly is secured to the frame via a T-bolt. The T-bolt is positioned within a first adjustment slot, with its head positioned within the slot. The portion of the T-bolt extending beyond the slot passes through a first connection hole and is tightened with a nut, thereby securing the adjustment base to the frame. To adjust the position of the wire clamp assembly in the second direction, simply loosen the nut, slide the T-bolt and adjustment base along the first adjustment slot to the desired position, and then tighten the nut. This makes adjusting the position of the wire clamp assembly simple and convenient.

[0013] Furthermore, the frame includes a support rod and a first mounting rod, the support rod is arranged along the first direction, the first mounting rod is connected to the support rod along the second direction, the first adjustment slot is arranged on the first mounting rod, and the first mounting rod can adjust its position along the first direction on the support rod.

[0014] In this solution, the support rod supports the first mounting rod in the first direction, and the wire clamp assembly is adjustably arranged on the first mounting rod; the first mounting rod can adjust its position along the first direction on the support rod, so that the wire clamp assembly can adjust the distance between it and the swing mechanism along the first direction, thereby increasing the adjustable angle of the cable swing angle.

[0015] Furthermore, the first direction is a vertical direction, the second direction is a horizontal direction, the tensioning mechanism includes a guide assembly and a counterweight, the counterweight is connected to the cable and hangs below the clamp assembly, the guide assembly is arranged between the counterweight and the swing mechanism, and the cable passes through the guide assembly.

[0016] In this solution, the tensioning mechanism includes a guide assembly and a counterweight. The counterweight is connected to the cable and suspended, so that the gravity of the counterweight acts on the cable in a first direction (vertical direction), straightening the cable in a direction away from the clamp assembly. This tensioning method does not require additional power, has a simple structure, and is convenient for simulating the actual counterweight situation when the cable is in use; the cable passes through the guide assembly, and the guide assembly limits and guides the cable, so that the end of the cable connected to the counterweight can move in the first direction but cannot swing in the second direction, reducing the swing of the end of the cable connected to the counterweight, avoiding the influence of centrifugal force on the cable swing test, and making the swing test device more stable during operation.

[0017] Furthermore, the swing mechanism includes a swing motor, a connecting rod mechanism, a mounting seat, a rocker arm and a clamping assembly, the mounting seat is arranged on the frame, the swing motor is arranged on the mounting seat, and the rocker arm is rotatably connected to the mounting seat; the connecting rod mechanism is connected to the rocker arm and the swing motor, and the swing motor drives the rocker arm to swing back and forth through the connecting rod mechanism; the clamping assembly is connected to the rocker arm, and the clamping assembly forms a gap for the cable to pass through.

[0018] In this solution, the output shaft of the swing motor rotates and drives the rocker arm to swing back and forth around the mounting base through a connecting rod mechanism; the cable passes through the gap formed by the clamping assembly, so that when the rocker arm swings, the cable is driven to swing back and forth through the clamping assembly, and the cable can slide in the gap of the clamping assembly, thereby avoiding the stress in the first direction being transferred to the cable when the rocker arm swings and damaging the cable.

[0019] Furthermore, the clamping assembly includes a connecting base and two driving wheels, the connecting base is connected to the rocker arm, the driving wheels are rotatably arranged on the connecting base, the two driving wheels are arranged at intervals, and the cable passes between the two driving wheels.

[0020] In this solution, the clamping assembly includes a connecting base and two driving wheels. The two driving wheels are rotatably arranged on the connecting base. The two driving wheels clamp the cable from both sides. When the cable slides relative to the driving wheels, the driving wheels rotate to reduce friction with the cable. At the same time, the driving wheels can only apply a force perpendicular to the cable to drive the cable to swing, but cannot apply a force along the length of the cable to pull the cable, so that the cable swings more smoothly and stably.

[0021] Furthermore, the connecting base is rotatably connected to the rocker arm, and the rotating surface of the connecting base is parallel to the rotating surface of the rocker arm.

[0022] In this solution, the connecting base is rotatably connected to the rocker arm, and the rotation plane of the base is parallel to the rotation plane of the rocker arm. This allows the rocker arm to drive the driving wheel to swing to drive the cable to swing. The cable provides a reaction force to the driving wheel, causing the connecting base to rotate relative to the rocker arm, so that the two driving wheels continue to apply force to the cable in the second direction to drive the cable to swing, rather than applying force to the cable in the first direction to pull the cable.

[0023] Furthermore, the connecting rod mechanism includes a rotating handle and a connecting rod, the rotating handle is fixedly connected to the swing motor, one end of the connecting rod is rotatably connected to the rotating handle, and the connecting rod and the swing motor are staggered; the end of the connecting rod away from the rotating handle is rotatably connected to the rocker arm, and the rotation connection point between the connecting rod and the rocker arm does not coincide with the rotation connection point between the rocker arm and the mounting seat.

[0024] In this solution, the rotating handle, the connecting rod and the rocker arm are rotatably connected to form a crank-connecting rod mechanism. The rotating handle rotates as a crank under the drive of the swing motor. The connecting rod is connected between the rocker arm and the rotating handle. When the rotating handle rotates, the rocker arm swings back and forth as a rocker, thereby driving the driving member to drive the cable to swing back and forth.

[0025] Furthermore, the rocker arm is provided with a plurality of rotation holes, which are spaced apart along the length direction of the rocker arm; a rotating shaft is provided at one end of the connecting rod away from the rotating handle, and the rotating shaft is rotatably engaged with the rotating hole.

[0026] In this solution, the rocker arm is provided with multiple rotation holes, and the rocker arm and the connecting rod are rotatably connected by a rotating shaft on the connecting rod that engages with the rotation holes. When the rotating shaft on the connecting rod engages with rotation holes at different locations on the rocker arm, the distance between the rotational connection point between the connecting rod and the rocker arm and the rotational connection point between the rocker arm and the mounting base varies, thereby adjusting the swing amplitude of the rocker arm.

[0027] Furthermore, the swing testing device also includes a circuit monitoring system, which includes a swing detector and an electronic counter. The cable is connected in series to the electronic counter and the swing detector. The swing detector is arranged on one side of the swing mechanism. When the swing mechanism swings past the swing detector, the swing detector is triggered. The electronic counter records the number of times the swing detector is triggered.

[0028] In this solution, when the swing mechanism swings past the swing detector, the swing detector triggers. The cable, swing detector, and electronic counter are connected in series, and the electronic counter counts when the swing detector triggers. During a normal cable swing test, the swing mechanism swings at a fixed frequency, and the electronic counter counts at a constant rate. If the electronic counter's counting rate fluctuates significantly, the swing test device is faulty and the user can perform maintenance inspections. If the cable's internal core wire fractures due to fatigue, the circuit is disconnected, and the electronic counter stops counting. The final count of the electronic counter can be used to determine the cable's core wire's fatigue resistance and quantify the cable's fatigue resistance performance.

[0029] In summary, the present invention has the following beneficial effects:

[0030] In the present invention, the cable is fixed and clamped by the wire clamp assembly, which completely simulates the working conditions of the cable being fixed by the wire clamp when it is actually used, and can better simulate the stress concentration conditions during the actual installation and use of the cable; the wire clamp assembly, the swing mechanism and the tensioning mechanism are arranged in sequence along a first direction, and the wire clamp assembly can adjust its position along a second direction perpendicular to the first direction, so as to adjust the angle between the line connecting the wire clamp assembly and the swing mechanism and the first direction, thereby changing the swing angle of the cable relative to the wire clamp assembly when the swing mechanism drives the cable to swing, supporting asymmetric swing testing of the cable, and realizing fatigue testing of the cable at multiple swing angles. The cable has little limitation during swing testing and the cable testing effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the main structure of a swing testing device according to an embodiment of the present invention.

[0032] Figure 2 It is a schematic diagram of the three-dimensional structure of a wire clamp assembly according to an embodiment of the present invention.

[0033] Figure 3 It is a schematic structural diagram of a first clamping block and a second clamping block according to an embodiment of the present invention.

[0034] Figure 4 It is a schematic diagram of the three-dimensional structure of the swing mechanism according to an embodiment of the present invention.

[0035] Figure 5This is a schematic diagram of the main structure of the swing test device when the swing mechanism of one embodiment of the present invention swings along the swing direction. Figure 1 .

[0036] Figure 6 This is a schematic diagram of the main structure of the swing test device when the swing mechanism of one embodiment of the present invention swings along the swing direction. Figure 2 .

[0037] Figure 7 It is a schematic diagram of the main structure of the swing mechanism of one embodiment of the present invention.

[0038] Figure 8 It is a schematic diagram of the vertical cross-sectional structure of a clamping assembly according to an embodiment of the present invention.

[0039] In the picture:

[0040] 1000, swing test device; 100, frame; 110, support rod; 111, support adjustment slot; 120, first mounting rod; 121, first adjustment slot; 130, second mounting rod; 131, second adjustment slot; 140, third mounting rod; 141, third adjustment slot; 150, connecting ear; 151, support connecting hole; 160, fourth mounting rod; 200, wire clamp assembly; 210, first clamping block; 220, second clamping block; 230, clamping slot; 240, adjustment seat; 241, first connecting hole; 300, swing mechanism; 310, swing motor; 320 , connecting rod mechanism; 321, rotating handle; 322, connecting rod; 323, rotating shaft; 330, mounting seat; 331, second connecting hole; 340, rocker arm; 341, rotating hole; 342, mounting shaft; 350, clamping assembly; 351, connecting base; 352, driving wheel; 353, limiting groove; 354, shaft hole; 355, bearing; 400, tensioning mechanism; 410, guide assembly; 411, guide support; 412, guide wheel; 413, third connecting hole; 420, counterweight; 500, circuit monitoring system; 510, swing detector; 520, electronic counter. DETAILED DESCRIPTION

[0041] The present invention will be further described below with reference to the accompanying drawings.

[0042] This embodiment discloses a cable swing test device 1000 for fatigue testing of cables. Figure 1The swing test device 1000 includes a frame 100, a wire clamp assembly 200, a swing mechanism 300, and a tensioning mechanism 400. The wire clamp assembly 200, the swing mechanism 300, and the tensioning mechanism 400 are sequentially arranged on the frame 100 along a first direction (direction X in the figure). The cable passes through the wire clamp assembly 200 and the swing mechanism 300 in sequence along the first direction and is connected to the tensioning mechanism 400. The wire clamp assembly 200 is used to securely clamp the cable on the frame 100, the swing mechanism 300 is used to drive the cable to swing, and the tensioning mechanism 400 is used to maintain cable tension.

[0043] The end of the cable away from the clamp assembly 200 passes through the swing mechanism 300 and connects to the tensioning mechanism 400. The tensioning mechanism 400 applies a force away from the clamp assembly 200, keeping the cable taut. The end of the cable connected to the tensioning mechanism 400 can move in a first direction, allowing the swing mechanism 300 to swing the cable around the clamp assembly 200 back and forth, thus performing fatigue testing on the cable.

[0044] Reference Figure 1 In this embodiment, the frame 100 is a rectangular frame structure, which includes a support rod 110, a first mounting rod 120, a second mounting rod 130, and a third mounting rod 140. Two support rods 110 are arranged in parallel and spaced apart, and the two support rods 110 extend along a first direction. The first mounting rod 120, the second mounting rod 130, and the third mounting rod 140 extend along a second direction (the Y direction in the figure), where the second direction is perpendicular to the first direction. The first mounting rod 120, the second mounting rod 130, and the third mounting rod 140 are each connected between the two support rods 110 to form a rectangular frame. The first mounting rod 120, the second mounting rod 130, and the third mounting rod 140 are arranged in sequence along the first direction, that is, the first mounting rod 120 is arranged above the second mounting rod 130, and the second mounting rod 130 is arranged above the third mounting rod 140.

[0045] Furthermore, in other embodiments, the frame 100 may also be in other suitable shapes as long as it can support the wire clamp assembly 200 , the swing mechanism 300 and the tensioning mechanism 400 .

[0046] In this embodiment, the rack 100 is vertically mounted on the ground or other work surface, with the first direction being vertical and the second direction being horizontal. The cables are arranged vertically to better simulate the working conditions of the cables under their own weight and when loaded with other heavy objects. In other embodiments, the first direction can be horizontal and the second direction can be vertical, in which case the cables are arranged horizontally. In other embodiments, the first and second directions can be other directions, i.e., the cables can be arranged at other angles.

[0047] Reference Figures 1 to 3The wire clamp assembly 200 includes a first clamping block 210 and a second clamping block 220 that are detachably connected. Semi-arc-shaped grooves are provided on the opposing sides of the first clamping block 210 and the second clamping block 220, so that when the first clamping block 210 and the second clamping block 220 are connected, they enclose a clamping groove 230. The cable passes through the clamping groove 230 and is clamped and fixed in the clamping groove 230. The swing test device 1000 fixes the cable to the frame 100 through the wire clamp assembly 200. The wire clamp assembly 200 uses the first clamping block 210 and the second clamping block 220 to enclose the clamping groove 230, and uses the clamping groove 230 to fix and clamp the cable, completely simulating the working conditions of the cable being fixed by the wire clamp when it is actually used, thereby better simulating the stress concentration conditions during the actual installation and use of the cable.

[0048] In this embodiment, the first clamping assembly 350 and the second clamping assembly 350 are fastened together by bolts, so that the clamping force of the cable clamp assembly 200 can be adjusted by adjusting the tightening degree of the bolts. In other embodiments, the first clamping assembly 350 and the second clamping assembly 350 can also be connected in other suitable ways.

[0049] In this embodiment, the position of the cable clamp assembly 200 on the frame 100 can be adjusted along the second direction. This allows for adjustment of the angle between the line connecting the cable clamp assembly 200 and the swing mechanism 300 and the first direction. This, in turn, changes the angle at which the cable swings relative to the cable clamp assembly 200 when the swing mechanism 300 drives the cable to swing. This allows for asymmetric cable swing testing and fatigue testing at various cable swing angles. This reduces limitations during cable swing testing and improves cable testing results.

[0050] During actual cable use, cable swings and bends often occur irregularly, often with one side of the cable experiencing greater compression and the other side experiencing greater tension. In this embodiment, by adjusting the position of the cable clamp assembly 200, the swing mechanism 300 can achieve asymmetrical cable swing motion, thereby simulating the different operating conditions on both sides of the cable during actual use and providing significant benefits for cable fatigue testing.

[0051] Specifically, in this embodiment, the first clamping block 210 and the second clamping block 220 are fixedly connected to an adjustment seat 240. The frame 100 is provided with a first adjustment slot 121 along the second direction. The first adjustment slot 121 is a T-shaped slot with a slot opening width less than the slot width, and the slot opening of the first adjustment slot 121 faces the adjustment seat 240. A T-bolt is disposed within the first adjustment slot 121. The bolt head width of the T-bolt is less than the slot width of the first adjustment slot 121, and the bolt head length is greater than the slot width of the first adjustment slot 121. This allows the T-bolt to be positioned within the first adjustment slot 121 after the bolt head is inserted into the first adjustment slot 121 and then rotated. The adjustment seat 240 is provided with first connecting holes 241 at both ends. The T-bolt, which passes through the first adjustment slot 121 and the first connecting hole 241, is tightened with a nut at one end, thereby securing the adjustment seat 240 to the frame 100.

[0052] When the position of the wire clamp assembly 200 needs to be adjusted along the second direction, just loosen the nut, slide the T-bolt and the adjustment seat 240 along the first adjustment groove 121 to the set position, and then tighten the nut. This setting method makes the position adjustment of the wire clamp assembly 200 simple and convenient.

[0053] In this embodiment, the wire clamp assembly 200 is disposed on the first mounting rod 120. The first adjustment slot 121 is disposed along the length direction of the first mounting rod 120.

[0054] Reference Figure 1 and Figure 4 The swing mechanism 300 includes a swing motor 310, a connecting rod mechanism 320, a mounting base 330, a rocker arm 340, and a clamping assembly 350. The mounting base 330 is connected to the frame 100, the swing motor 310 is fixedly connected to the mounting base 330, and one end of the rocker arm 340 is rotatably connected to the mounting base 330. The connecting rod mechanism 320 is connected to the rocker arm 340 and the swing motor 310. The swing motor 310 drives the rocker arm 340 to swing back and forth through the connecting rod mechanism 320. The clamping assembly 350 is connected to the rocker arm 340, and a gap is formed in the clamping assembly 350 for the cable to pass through.

[0055] Reference Figures 4 to 6 When the swing mechanism 300 is in operation, the output shaft of the swing motor 310 rotates, driving the swing arm 340 to swing back and forth around the mounting base 330 through the connecting rod mechanism 320. The cable passes through the gap formed by the clamping assembly 350. As the swing arm 340 swings, the cable is driven back and forth by the clamping assembly 350. The cable can slide within the gap of the clamping assembly 350, thereby preventing the swing arm 340 from pulling on the cable and damaging it or affecting the cable fatigue test.

[0056] In this embodiment, the mounting base 330 is an L-shaped component. The swing motor 310 is fixedly connected to one side of the mounting base 330 , and the other side of the mounting base 330 is fixedly connected to the frame 100 .

[0057] The mounting seat 330 is disposed on the second mounting rod 130 , and the mounting seat 330 is disposed above the second mounting rod 130 , so that the second mounting rod 130 can better vertically support the swing mechanism 300 .

[0058] In this embodiment, the swing mechanism 300 is adjustable along the second direction on the frame 100. Specifically, the second mounting rod 130 has a second adjustment slot 131 extending along its length. The second adjustment slot 131 is an elongated T-shaped slot. A second connecting hole 331 is provided on the mounting base 330. A T-bolt is positioned within the second adjustment slot 131. The mounting base 330 is fixedly connected to the second mounting rod 130 via the T-bolt and nut. By loosening the nut, the position of the mounting base 330 can be adjusted along the length of the second adjustment slot 131, thereby adjusting the position of the swing mechanism 300 along the second direction. This allows the adjustable angle of the cable swing to be further increased by adjusting the position of the swing mechanism 300.

[0059] Reference Figures 4 to 7 In this embodiment, the linkage mechanism 320 includes a rotating handle 321 and a connecting rod 322. One end of the rotating handle 321 is fixedly connected to the swing motor 310, and one end of the connecting rod 322 is rotatably connected to the rotating handle 321. The connecting rod 322 is staggered with the swing motor 310 (i.e., the connection point between the connecting rod 322 and the rotating handle 321 does not coincide with the connection point between the rotating handle 321 and the swing motor 310). The end of the connecting rod 322 away from the rotating handle 321 is rotatably connected to the rocker arm 340, and the rotational connection point between the connecting rod 322 and the rocker arm 340 does not coincide with the rotational connection point between the rocker arm 340 and the mounting base 330.

[0060] Thus, the rotating handle 321, the connecting rod 322 and the rocker arm 340 are rotatably connected to form a crank-connecting rod mechanism 320. The rotating handle 321 rotates as a crank under the drive of the swing motor 310. The connecting rod 322 is connected between the rocker arm 340 and the rotating handle 321. When the rotating handle 321 rotates, the rocker arm 340 swings back and forth as a rocker, thereby driving the driving member to drive the cable to swing back and forth.

[0061] In this embodiment, the rocker arm 340 is provided with a plurality of rotation holes 341 spaced apart along the length of the rocker arm 340. A rotating shaft 323 is provided at the end of the connecting rod 322, distal from the rotating handle 321. The rotating shaft 323 rotatably engages with the rotation holes 341 to achieve a rotational connection between the rocker arm 340 and the connecting rod 322. When the rotating shaft 323 on the connecting rod 322 engages with the rotation holes 341 at different locations on the rocker arm 340, the distance between the rotational connection point between the connecting rod 322 and the rocker arm 340 and the rotational connection point between the rocker arm 340 and the mounting base 330 varies, thereby adjusting the swing amplitude of the rocker arm 340.

[0062] In addition, in other embodiments, the connecting rod 322 and the rocker arm 340 may also be rotatably connected in other ways, such as setting the rotating shaft on the rocker arm 340 and setting the rotating hole 341 on the connecting rod 322.

[0063] Reference Figure 4 and Figure 7 The clamping assembly 350 includes a connecting base 351 and two driving wheels 352. The connecting base 351 is connected to the rocker arm 340, and the driving wheel 352 is rotatably arranged on the connecting base 351, and the rotating surface of the driving wheel 352 is parallel to the rocker arm 340. The two driving wheels 352 are arranged at intervals so that the cable can pass between the two driving wheels 352. The two driving wheels 352 limit and clamp the cable from both sides of the cable, so that the cable is driven to swing left and right when the rocker arm 340 swings. At the same time, when the rocker arm 340 swings, the cable slides relative to the driving wheel 352, and the driving wheel 352 rotates to reduce friction with the cable, reduce the pulling of the swing mechanism 300 on the cable, and make the cable swing more smoothly and stably.

[0064] In this embodiment, a circle of limiting grooves 353 are provided on the circumference of the driving wheel 352 , and the cable is radially limited in the limiting grooves 353 of the two driving wheels 352 , thereby making it difficult for the cable to escape from between the two driving wheels 352 .

[0065] Reference Figures 4 to 8 In this embodiment, the connecting base 351 is rotatably connected to the rocker arm 340, and the rotational surface of the connecting base 351 is parallel to the rotational surface of the rocker arm 340. This allows the rocker arm 340 to drive the driving wheel 352 to swing to drive the cable to swing. The cable provides a reaction force to the driving wheel 352, causing the connecting base 351 to rotate relative to the rocker arm 340. This allows the two driving wheels 352 to continue to apply force to the cable in the second direction to drive the cable to swing, while reducing the force applied by the driving wheels 352 to the cable in the first direction, thereby reducing the pulling on the cable.

[0066] Specifically, in this embodiment, a mounting shaft 342 is fixedly mounted on the rocker arm 340. A shaft hole 354 is defined in the connecting base 351. A bearing 355 is disposed within the shaft hole 354. The outer ring of the bearing 355 fits within the shaft hole 354, and the mounting shaft 342 passes through the inner ring of the bearing 355. This ensures a tight connection between the connecting base 351 and the rocker arm 340, and reduces wear between the connecting base 351 and the rocker arm 340.

[0067] Reference Figure 1 In this embodiment, the tensioning mechanism 400 includes a guide assembly 410 and a counterweight 420. The guide assembly 410 is disposed between the counterweight 420 and the swing mechanism 300. The cable passes through the guide assembly 410 and is connected to the counterweight 420. The counterweight 420 is suspended below the clamp assembly 200. The weight of the counterweight 420 acts on the cable in a first direction (vertical direction), straightening the cable away from the clamp assembly 200. This tensioning method does not require additional power, has a simple structure, and can easily simulate the actual weight balance of the cable during use.

[0068] The cable is limited and guided by the guide assembly 410, so that one end of the cable connected to the counterweight 420 can move in the first direction but cannot swing in the second direction, thereby reducing the swinging of one end of the cable connected to the counterweight 420, avoiding the influence of centrifugal force on the cable swing test, and making the swing test device 1000 more stable during operation.

[0069] Reference Figure 6 The guide assembly 410 includes a guide support 411 and a guide wheel 412. The guide support 411 is fixedly mounted on the frame 100, and the guide wheel 412 is rotatably connected to the guide support 411. Two guide wheels 412 are provided along the second direction, and a gap is formed between the two guide wheels 412 for the cable to pass through. The two guide wheels 412 clamp the limiting cable so that the end of the cable connected to the counterweight 420 is not easily shaken back and forth when the cable swings. At the same time, when the cable slides relative to the guide assembly 410, the guide wheel 412 rotates to reduce friction with the cable.

[0070] In addition, in other embodiments, the guide assembly 410 may also be a guide cylinder, a guide groove, or other suitable structures.

[0071] In other embodiments, when the first direction is not the vertical direction, the tensioning mechanism 400 may still include a guide wheel 412 and a counterweight 420. At this time, the guide wheel 412 also acts as a pulley, converting the vertical gravity of the counterweight 420 into a force in a direction away from the wire clamp assembly 200.

[0072] In this embodiment, the guide assembly 410 is mounted on the third mounting rod 140 and can be adjusted along the second direction. Specifically, a third adjustment slot 141 is defined along the length of the third mounting rod 140, and a T-bolt is positioned within the third adjustment slot 141. A guide support 411 is provided with a third connecting hole 413. The T-bolt passes through the third adjustment slot 141 and the third connecting hole 413 and is then secured with a nut. By loosening the nut, the guide assembly can be slid along the third adjustment slot 141 to adjust its position.

[0073] In addition, in other embodiments, the tensioning mechanism 400 may also adopt other suitable mechanisms, such as the tensioning mechanism 400 may adopt a tension spring, a coil spring or an elastic rope, which is connected to one end of the cable away from the clamp assembly 200 to tension the cable.

[0074] Reference Figure 1 The support rod 110 has a support adjustment slot 111 defined along its length. The first mounting rod 120, the second mounting rod 130, and the third mounting rod 140 are each fixedly connected at both ends with a connecting ear 150, each of which has a support connection hole 151. T-bolts are disposed within the support adjustment slots 111. The T-bolts pass through the support adjustment slots 111 and the connection holes and are then tightened with nuts. This allows the first mounting rod 120, the second mounting rod 130, and the third mounting rod 140 to be adjusted along the length of the support rod 110. This in turn allows the spacing between the cable clamp assembly 200, the swing mechanism 300, and the tensioning mechanism 400 along the first direction to be adjusted, further adjusting the angle of the cable swing.

[0075] In this embodiment, the support rod 110, first mounting rod 120, second mounting rod 130, and third mounting rod 140 are all made of square aluminum with grooves on all four sides, ensuring the overall rigidity of the frame 100 while reducing its overall weight. The front, back, left, and right sides of the aluminum can all serve as installation locations, facilitating the installation of the wire clamp assembly 200, swing mechanism 300, and guide assembly 410, providing excellent scalability.

[0076] Reference Figures 1 to 6 In this embodiment, the swing test device 1000 further includes a circuit monitoring system 500, and the circuit monitoring system 500 is used to monitor the cable swing test in real time.

[0077] The circuit monitoring system 500 includes a swing detector 510 and an electronic counter 520. The internal core wires of the cable are connected in series, and then the internal core wires of the cable are connected in series to the electronic counter 520 and the swing detector 510. The swing detector 510 is mounted on one side of the swing mechanism 300. When the swing mechanism 300 swings past the swing detector 510, the swing detector 510 is triggered. The electronic counter 520 records the number of times the swing detector 510 is triggered.

[0078] When the cable is oscillating normally for fatigue testing, the oscillating mechanism 300 oscillates at a fixed frequency, and the electronic counter 520 counts at a constant rate. Large fluctuations in the counting rate of the electronic counter 520 indicate a malfunction in the oscillation testing device 1000, prompting the user to perform a repair inspection. If fatigue fracture occurs within the cable's core wire, the circuit monitoring system 500 opens, and the electronic counter 520 stops counting. The final count of the electronic counter 520 provides information on the cable's core wire's fatigue resistance, enabling quantitative analysis of the cable's fatigue resistance.

[0079] The frame 100 further includes a fourth mounting rod 160, which extends in the second direction and is connected between the two support rods 110. The fourth mounting rod 160 is disposed between the second mounting rod 130 and the first mounting rod 120. The swing detector 510 is disposed on the fourth mounting rod 160 and can be adjusted in position on the fourth mounting rod 160 in the second direction. Simultaneously, the fourth mounting rod 160 can be adjusted in position on the support rods 110 in the first direction. Thus, the position of the swing detector 510 can be adjusted in both the first and second directions. This allows the swing detector 510 to adjust its position accordingly after the swing mechanism 300 is adjusted to maintain detection of the swing of the swing mechanism 300.

[0080] In this embodiment, the swing detector 510 includes a proximity switch positioned opposite the swing arm 340. Each time the swing arm 340 passes the proximity switch, the proximity switch is triggered, causing the circuit monitoring system 500 to open and close once, and the electronic counter 520 to count the number of times. In other embodiments, the swing detector 510 may also utilize a photosensitive element, a magnetic sensor, or other sensor element.

[0081] The above description is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. A cable swing test device for cable fatigue testing, characterized in that: The swing test device (1000) comprises a frame (100), a wire clamp assembly (200), a swing mechanism (300) and a tensioning mechanism (400), wherein the wire clamp assembly (200), the swing mechanism (300) and the tensioning mechanism (400) are sequentially arranged on the frame (100) at intervals along a first direction; The wire clamp assembly (200) comprises a first clamping block (210) and a second clamping block (220) that are detachably connected, wherein the first clamping block (210) and the second clamping block (220) enclose and form a clamping groove (230) for clamping and fixing the cable; the cable passes through the swing mechanism (300) and is connected to the tensioning mechanism (400), and the tensioning mechanism (400) provides a force for the cable in a direction away from the wire clamp assembly (200); One end of the cable connected to the tensioning mechanism (400) is movably arranged along a first direction, and the cable can slide relative to the swing mechanism (300), and the swing mechanism (300) is used to drive the cable to swing back and forth; The wire clamp assembly (200) is capable of adjusting its position on the frame (100) along a second direction, wherein the second direction is perpendicular to the first direction; The swing mechanism (300) comprises a swing motor (310), a connecting rod mechanism (320), a mounting seat (330), a rocker arm (340) and a clamping assembly (350); the mounting seat (330) is arranged on the frame (100); the swing motor (310) is arranged on the mounting seat (330); the rocker arm (340) is rotatably connected to the mounting seat (330); the connecting rod mechanism (320) is connected to the rocker arm (340) and the swing motor (310); the swing motor (310) drives the rocker arm (340) to swing back and forth through the connecting rod mechanism (320); the clamping assembly (350) is connected to the rocker arm (340); and the clamping assembly (350) is formed with a gap for allowing the cable to pass through; The clamping assembly (350) includes a connecting base (351) and two driving wheels (352), wherein the connecting base (351) is connected to the rocker arm (340), and the driving wheels (352) are rotatably arranged on the connecting base (351), the two driving wheels (352) are arranged at intervals, and the cable passes between the two driving wheels (352), the connecting base (351) is rotatably connected to the rocker arm (340), and the rotating surface of the connecting base (351) is parallel to the rotating surface of the rocker arm (340).

2. A cable swing test device according to claim 1, characterized in that: The frame (100) is provided with a first adjustment slot (121) along the second direction, and a T-shaped bolt is provided in the first adjustment slot (121); the wire clamp assembly (200) further comprises an adjustment seat (240) fixedly connected to the first clamping block (210) and / or the second clamping block (220), and a first connecting hole (241) is provided on the adjustment seat (240), and the T-shaped bolt passes through the first adjustment slot (121) and the first connecting hole (241) and is locked by a nut.

3. A cable swing test device as claimed in claim 2, characterized in that: The frame (100) comprises a support rod (110) and a first mounting rod (120), wherein the support rod (110) is arranged along the first direction, the first mounting rod (120) is connected to the support rod (110) along the second direction, the first adjustment slot (121) is arranged on the first mounting rod (120), and the position of the first mounting rod (120) can be adjusted along the first direction on the support rod (110).

4. A cable swing test device according to claim 1, characterized in that: The first direction is a vertical direction, and the second direction is a horizontal direction. The tensioning mechanism (400) comprises a guide assembly (410) and a counterweight (420). The counterweight (420) is connected to the cable and suspended below the clamp assembly (200). The guide assembly (410) is arranged between the counterweight (420) and the swing mechanism (300), and the cable passes through the guide assembly (410).

5. A cable swing test device according to claim 1, characterized in that: The connecting rod mechanism (320) comprises a rotating handle (321) and a connecting rod (322), wherein the rotating handle (321) is fixedly connected to the swing motor (310), one end of the connecting rod (322) is rotatably connected to the rotating handle (321), and the connecting rod (322) and the swing motor (310) are staggered; one end of the connecting rod (322) away from the rotating handle (321) is rotatably connected to the rocker arm (340), and the rotation connection point between the connecting rod (322) and the rocker arm (340) and the rotation connection point between the rocker arm (340) and the mounting seat (330) do not coincide.

6. A cable swing test device as claimed in claim 5, characterized in that: The rocker arm (340) is provided with a plurality of rotating holes (341), and the plurality of rotating holes (341) are arranged at intervals along the length direction of the rocker arm (340); a rotating shaft (323) is provided at one end of the connecting rod (322) away from the rotating handle (321), and the rotating shaft (323) is rotatably engaged with the rotating hole (341).

7. A cable swing test device according to claim 1, characterized in that: The swing test device (1000) further comprises a circuit monitoring system (500), wherein the circuit monitoring system (500) comprises a swing detector (510) and an electronic counter (520), wherein the cable is connected in series to the electronic counter (520) and the swing detector (510), wherein the swing detector (510) is arranged on one side of the swing mechanism (300), and when the swing mechanism (300) swings past the swing detector (510), the swing detector (510) is triggered, and the electronic counter (520) records the number of times the swing detector (510) is triggered.

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