A cable wire bending tester

Abstract

The application provides a cable wire bending tester, and relates to the technical field of bending testers, and comprises a test table, a test frame, a control device, a U-shaped frame, a cable main body and a clamping mechanism, the test frame is vertically installed on the upper end face of one side of the test table, the control device is fixedly installed on the outer wall of one side of the test table, a rotating shaft is rotatably installed on the upper portion of the test frame, a rotating disc is fixedly sleeved on the outer side of one end of the rotating shaft, a first motor is fixedly installed on the end portion of the rotating shaft, the first motor is fixedly installed on the outer wall of the rear end of the test frame, and the U-shaped frame is installed on the front end outer wall of the rotating disc through externally arranged fixing pieces. The application realizes the realization of the working condition of the cable bending test, provides efficient and reliable test equipment for the durability evaluation of the cable wire, and can be widely applied to the cable quality detection scenes in the fields of power, automation and robots.

Description

Technical Field

[0001] This invention relates to the field of bending testing machine technology, and in particular to a cable bending testing machine. Background Technology

[0002] With the widespread application of new composite materials and high-performance polymers in cable manufacturing, the mechanical strength, flexibility, and durability of cables have been significantly improved. However, this also places higher demands on their reliability under complex operating conditions. As a key carrier for power transmission and signal control, the durability of cables directly affects the safety and reliability of the entire equipment. Bending fatigue testing is one of the core methods for evaluating cable durability.

[0003] Existing rotary bending testing machines typically fix one end of the cable to a rotating turntable, apply a counterweight to the other end, and drive the turntable to rotate in both directions via a motor, causing the cable to bend repeatedly at the fixed point. While this structure is simple, it has significant limitations: the bending stress is highly concentrated near the clamping point between the cable and the fixture, making it unable to effectively simulate the bending wear that may occur at any point in the middle of the cable under real-world working conditions (such as robot joints, automated cable chains, and high-frequency mobile equipment connection cables). This is especially true for cables using new materials, where the mechanical behavior of the middle section structure and joints may differ, making it difficult for traditional methods to accurately reflect the fatigue performance of the cable itself.

[0004] Furthermore, existing equipment typically only performs bending actions in a single direction and at a fixed angle during a single test, failing to reproduce the complex multi-dimensional loads that cables may experience in actual use, such as torsion and lateral compression. This gap between the test conditions and the real-world application environment limits the reference value of the evaluation results for the applicability and lifespan prediction of new material cables, making it difficult to meet increasingly stringent industrial testing requirements. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this invention is to provide a cable bending test machine that can solve the technical problem that the bending position is fixed and singular, and cannot simulate real complex working conditions.

[0006] This invention proposes a cable bending test machine, comprising: a test bench, a test frame, a control device, a U-shaped frame, a cable body, and a clamping mechanism. The test frame is vertically installed on the upper side of one side of the test bench. The control device is fixedly installed on the outer wall of one side of the test bench. A rotating shaft is rotatably installed inside the test frame, and a rotating disk is fixedly sleeved on the outer side of one end of the rotating shaft. A first motor is fixedly installed at the end of the rotating shaft and is fixedly installed on the outer wall of the rear end of the test frame. The U-shaped frame is installed on the outer wall of the front end of the rotating disk by an externally provided fastener. Storage slots are respectively opened on both sides inside the U-shaped frame, and a driving mechanism is provided inside both sets of storage slots. A U-shaped rod is provided at one end of the driving mechanism, and a reciprocating bending mechanism is provided outside the U-shaped rod. The clamping mechanism is located on the outer wall of the front end of the U-shaped frame near the top. A connecting test mechanism is fixedly installed on the outer wall of the front end of the test frame near the bottom.

[0007] In the above technical solution, the driving mechanism further includes a screw, a slide bar, and a second motor. The screw and the slide bar are respectively disposed inside two sets of storage slots. The screw is rotatably disposed inside one set of storage slots, and the slide bar is vertically installed inside the other set of storage slots. The second motor is fixedly installed on the lower end face of one side of the U-shaped frame, and the output end of the second motor is connected to the end of the screw.

[0008] In the above technical solution, further, sliders are fixedly installed on both sides of the outer wall of the rear end of the U-shaped rod, and the sliders are connected to the screw and the slide rod respectively. The sliders are threaded with the screw through a machined threaded surface, and the other set of sliders are slidably engaged with the slide rod through a round hole.

[0009] In the above technical solution, the reciprocating bending mechanism further includes reciprocating cylinders symmetrically fixedly installed on both sides inside the U-shaped rod. The telescopic ends of the two reciprocating cylinders are respectively fixedly connected to a first push plate and a second push plate. One end of the first push plate and the second push plate slides in cooperation with the outside of the U-shaped rod.

[0010] In the above technical solution, further, support arms are fixedly installed at both ends of the outer wall of the first push plate, the support arms are inclined, a connecting frame is fixedly installed on the side of the support arm away from the first push plate, a connecting shaft is rotatably installed inside the connecting frame, and a sleeve is fixedly sleeved on the outside of the connecting shaft. A connecting arm is fixedly installed on one side of the outer wall of the second push plate, and a notch is opened inside the end of the connecting arm away from the second push plate, and a clamping roller is fixedly installed inside the notch.

[0011] In the above technical solution, the sleeve component further includes a connecting rod fixedly sleeved on the outside of the connecting shaft, and a U-shaped bracket is fixedly installed at the end of the connecting rod, with a mounting component provided on one side inside the U-shaped bracket.

[0012] In the above technical solution, the mounting component further includes a card cylinder that is fixedly embedded in one side of the U-shaped card holder, and a fixing pin is slidably inserted inside the side of the U-shaped card holder away from the card cylinder, and the fixing pin and the card cylinder are threadedly engaged.

[0013] In the above technical solution, the clamping mechanism further includes a mounting base, which is fixedly installed on the outer wall of the front end of the U-shaped frame and near the top. Clamping cylinders are symmetrically installed on both sides inside the mounting base, and clamping blocks are fixedly installed on the telescopic ends of the clamping cylinders.

[0014] In the above technical solution, further, a cable clamping groove is provided inside the side of the clamping blocks that are close to each other. The upper part of one end of the cable body is clamped in the two sets of cable clamping grooves, and the lower part of the other end passes through the two sets of U-shaped clamping seats in sequence. The lower end of the cable body is wound to form a closed rope loop. A hook is hung inside the rope loop, and a weight is fixedly installed at the lower end of the hook.

[0015] In the above technical solution, the fixing component further includes connectors that are respectively fixedly installed on both sides of the outer wall of the U-shaped frame, and the connectors are connected to the rotating disk by spirally inserted fixing bolts.

[0016] The beneficial effects of the technical solutions provided in the embodiments of the present invention include at least the following: Adopting a multi-dimensional bending drive design, through the coordination of rotation and reciprocating motion, it breaks the limitation of fixed bending position of traditional equipment. It can simulate the bending wear of any section in the middle of the cable under real working conditions, so that the test results are directly related to the actual quality of the middle section of the cable body, and solve the problem that existing equipment can only reflect the fatigue resistance performance at the joint. By combining the rotation of the U-shaped frame driven by the rotary disk with the pusher action of the reciprocating cylinder, the cable torsion and lateral bending composite test can be achieved. This can accurately simulate the complex working conditions in scenarios such as robot arms and automatic cable chains, greatly reduce the gap between the test conditions and the real application environment, and significantly improve the reference value of the test results. The design adopts an adjustable-height bending actuator, which drives the bending component to move vertically through the drive mechanism. The bending point position can be changed according to the test requirements. Multiple sets of bending tests for different sections of the cable can be completed in one test, without the need to frequently adjust the fixed position of the cable, effectively improving the test efficiency. By combining weight loading with mechanical clamping, a stable tension force is applied to the lower end of the cable. At the same time, the precise fixation of the clamping mechanism ensures that the cable is subjected to uniform and stable force during bending, avoiding test errors caused by tension fluctuations and improving the accuracy and repeatability of test data. Attached Figure Description

[0017] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts. Obviously, the drawings described below are merely some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of a cable bending tester provided in an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the connection structure between the U-shaped frame and the rotating disk of a cable bending tester provided in an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the connection structure between the U-shaped rod and the drive mechanism of a cable bending tester provided in an embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of the reciprocating bending mechanism of a cable bending tester provided in an embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram from another perspective of the reciprocating bending mechanism of a cable bending tester provided in an embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram of the partial structural connection between the U-shaped rod and the second push plate of a cable bending tester provided in an embodiment of the present invention.

[0024] Figure 7 This is a schematic diagram of the connection structure between the U-shaped bracket and the mounting component of a cable bending tester provided in an embodiment of the present invention.

[0025] Explanation of reference numerals in the attached drawings: 1-Test bench; 2-Test frame; 3-Control device; 4-First motor; 5-U-shaped frame; 6-U-shaped rod; 7-Cable body; 8-Connecting test mechanism; 9-Hook; 10-Weight; 11-Wire clamping groove; 12-Rotating shaft; 13-Rotating disk; 14-Fixing bolt; 15-Placement groove; 16-Connecting piece; 17-Slider; 18-Clamping block; 19-Clamping cylinder; 20-Slide rod; 21-Screw; 22-Second motor; 23-Reciprocating cylinder; 24-First push plate; 25-Support arm; 26-Connecting frame; 27-U-shaped clamping seat; 28-Connecting shaft; 29-Fixing pin; 30-Connecting rod; 31-Clamping roller; 32-Connecting arm; 33-Second push plate; 34-Clamping cylinder; 35-Mounting base. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0027] Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concepts disclosed in this invention.

[0028] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention.

[0029] Reference manual attached Figures 1 to 7 This invention provides a cable bending test machine, comprising: a test bench 1, a test frame 2, a control device 3, a U-shaped frame 5, a cable body 7, and a clamping mechanism. The test frame 2 is vertically mounted on the upper side of one side of the test bench 1. The control device 3 is fixedly mounted on the outer wall of one side of the test bench 1. A rotating shaft 12 is rotatably mounted inside the test frame 2, and a rotating disk 13 is fixedly sleeved on the outer side of one end of the rotating shaft 12. A first motor 4 is fixedly mounted on the end of the rotating shaft 12 and is fixedly mounted on the outer wall of the rear end of the test frame 2. The U-shaped frame 5 is mounted on the outer wall of the front end of the rotating disk 13 by externally provided fasteners. Storage compartments are provided on both sides inside the U-shaped frame 5. The two sets of storage slots 15 are equipped with a drive mechanism. One end of the drive mechanism is equipped with a U-shaped rod 6. The U-shaped rod 6 is equipped with a reciprocating bending mechanism. The clamping mechanism is located on the outer wall of the front end of the U-shaped frame 5 and near the top. The test frame 2 is fixedly installed on the outer wall of the front end and near the bottom. The clamping blocks 18 are provided with a wire-clamping groove 11 on the side that is close to each other. One end of the cable body 7 is clamped in the two sets of wire-clamping grooves 11, and the other end passes through the two sets of U-shaped clamping seats 27 in sequence. The lower end of the cable body 7 is wound to form a closed rope loop. A hook 9 is hung inside the rope loop. A weight 10 is fixedly installed at the lower end of the hook 9. In this embodiment, the control device 3 integrates a motor driver, a cylinder controller, and a program setting module, which can precisely control the speed and direction of the first motor 4, the lifting stroke of the drive mechanism, and the operating frequency of the reciprocating bending mechanism, so as to realize the digital setting and automated operation of the test parameters. This is the prior art and will not be described in detail. The test mechanism 8 can be connected to external auxiliary equipment such as tensile sensors and displacement detectors to collect data such as force and deformation during cable bending in real time, providing a basis for test result analysis; Specifically, the upper end of the cable body 7 is fixed by a clamping mechanism, and the lower end passes through a reciprocating bending mechanism. The lower end of the cable can be wound into a rope loop by the operator manually winding the cable body 7. The weight 10 is hung into the rope loop through the hook 9, and the suspended weight 10 applies tension at the lower end. After the control device 3 is started, the first motor 4 drives the rotating shaft 12 to rotate the rotating disk 13. The U-shaped frame 5 rotates synchronously with the rotating disk 13, causing the cable body 7 to undergo torsional deformation. At the same time, the drive mechanism drives the U-shaped rod 6 and the reciprocating bending mechanism to move vertically to the target bending position. The reciprocating bending mechanism applies a lateral bending force to the cable body 7. By coordinating the parameters of rotation, lifting and reciprocating bending actions through the control device 3, the complex stress scenario of the cable in real working conditions is simulated to complete the bending fatigue test.

[0030] The driving mechanism includes a screw 21, a slide bar 20, and a second motor 22. The screw 21 and the slide bar 20 are respectively installed inside two sets of storage slots 15. The screw 21 is rotatably installed inside one set of storage slots 15, and the slide bar 20 is vertically installed inside the other set of storage slots 15. The second motor 22 is fixedly installed on the lower end face of one side of the U-shaped frame 5. The output end of the second motor 22 is connected to the end of the screw 21. Slider 17 is fixedly installed on both sides of the outer wall of the rear end of the U-shaped rod 6. The slider 17 is connected to the screw 21 and the slide bar 20 respectively. The slider 17 is threaded with the screw 21 through a machined threaded surface. The other set of slider 17 is slidably engaged with the slide bar 20 through an open round hole. In this embodiment, the control device 3 sends a control signal to the second motor 22, which starts and drives the screw 21 to rotate inside the storage slot 15. Since the screw 21 is threadedly engaged with the corresponding slider 17 and the slide bar 20 restricts the rotational freedom of the external slider 17, the rotational motion of the screw 21 is converted into the linear motion of the slider 17 along the external axis of the screw 21, thereby driving the U-shaped rod 6 and the reciprocating bending mechanism to rise and fall smoothly along the guide direction of the slide bar 20, thereby adjusting the position of the bending point.

[0031] The reciprocating bending mechanism includes reciprocating cylinders 23 symmetrically fixedly installed on both sides inside the U-shaped rod 6. The telescopic ends of the two reciprocating cylinders 23 are respectively fixedly connected to a first push plate 24 and a second push plate 33. One end of the first push plate 24 and the second push plate 33 are slidably engaged with the outside of the U-shaped rod 6. Support arms 25 are fixedly installed at both ends of the outer wall of the first push plate 24. The support arms 25 are inclined. A connecting frame 26 is fixedly installed on the side of the support arm 25 away from the first push plate 24. A connecting shaft 28 is rotatably installed inside the connecting frame 26. A sleeve is fixedly sleeved on the outside of the connecting shaft 28. A connecting arm 32 is fixedly installed on one side of the outer wall of the second push plate 33. A notch is opened inside the end of the connecting arm 32 away from the second push plate 33. A clamping roller 31 is fixedly installed inside the notch. In this embodiment, the support arm 25 is fixed to the first push plate 24 by welding. The connecting frame 26 provides rotational support for the sleeve through the rotation of the connecting shaft 28, ensuring that the sleeve adapts to the bending and rotation of the cable body 7. The sleeve directly contacts the cable body 7 and causes the cable body 7 to bend along the reciprocating trajectory of the first push plate 24. Specifically, the control device 3 controls the reciprocating cylinder 23 to perform reciprocating extension and retraction movements. The extension and retraction end of the reciprocating cylinder 23 will drive the first push plate 24 and the second push plate 33 to slide along the guide direction of the U-shaped rod 6. When the first push plate 24 slides, it drives the connecting frame 26 and the sleeve piece to move through the support arm 25. The sleeve piece contacts the cable body 7 and applies a lateral force. At the same time, the connecting shaft 28 rotates freely with the bending deformation of the cable body 7. When the second push plate 33 slides synchronously, it drives the connecting arm 32 and the clamping roller 31 to contact the other side of the cable body 7. The clamping roller 31 can abut against the outer surface of the cable body 7 on the other side, assisting the sleeve to complete the bending action of the cable body 7. At the same time, the bending is in two forms: inward bending and outward bending, which improves the authenticity and accuracy of the bending test.

[0032] The sleeve includes a connecting rod 30 fixedly sleeved on the outside of the connecting shaft 28. A U-shaped bracket 27 is fixedly installed at the end of the connecting rod 30. A clamping component is provided on one side inside the U-shaped bracket 27. The clamping component includes a clamping sleeve 34 fixedly embedded in one side inside the U-shaped bracket 27. A fixing pin 29 is slidably inserted inside the side of the U-shaped bracket 27 away from the clamping sleeve 34. The fixing pin 29 and the clamping sleeve 34 are threadedly engaged. In this embodiment, the cable body 7 is placed into the opening of the U-shaped card holder 27, and the cable body 7 is fixed by screwing the fixing pin 29 into the card sleeve 34 from one side. Under the card sleeve of the U-shaped card holder 27, the force transmitted by the first push plate 24 is converted into a bending force on the cable body 7.

[0033] The clamping mechanism includes a mounting base 35, which is fixedly installed on the outer wall of the front end of the U-shaped frame 5 and near the top. Clamping cylinders 19 are symmetrically installed on both sides inside the mounting base 35, and clamping blocks 18 are fixedly installed on the telescopic ends of the clamping cylinders 19. In this embodiment, under the extension and retraction drive of the clamping cylinder 19, the clamping blocks 18 approach each other and clamp one end of the test cable body 7 externally through the wire clamping groove 11. The inner wall of the wire clamping groove 11 is treated with anti-slip texture to enhance its clamping stability. The internal groove of the wire clamping groove 11 is semi-circular.

[0034] The fasteners include connectors 16 that are fixedly installed on both sides of the outer wall of the U-shaped frame 5. The connectors 16 are connected to the rotating disk 13 by spirally inserted fixing bolts 14. In this embodiment, the U-shaped frame 5 is fixed to the outside of the rotating disk 13 by the connection of the fixing bolt 14, and rotates together with the rotating disk 13. The purpose is to achieve a detachable connection, which will improve the assembly efficiency for the maintenance and replacement of the equipment in the later stage.

[0035] In summary, this testing machine achieves realistic working conditions, automated processes, accurate data, and convenient operation and maintenance for the 7-bending test of the cable body. It provides efficient and reliable testing equipment for the durability assessment of cable materials and can be widely used in cable quality inspection scenarios in the fields of power, automation, and robotics.

[0036] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the preferred embodiments, while those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the protection scope of the present invention.

Claims

1. A cable bending tester, characterized in that, include: The test bench, test frame, control device, U-shaped frame, cable body, and clamping mechanism are provided. The test frame is vertically installed on the upper side of one side of the test bench. The control device is fixedly installed on the outer wall of one side of the test bench. A rotating shaft is rotatably installed inside the test frame. A rotating disk is fixedly sleeved on the outer side of one end of the rotating shaft. A first motor is fixedly installed at the end of the rotating shaft. The first motor is fixedly installed on the outer wall of the rear end of the test frame. The U-shaped frame is installed on the outer wall of the front end of the rotating disk through external fasteners. There are storage slots on both sides inside the U-shaped frame. A drive mechanism is provided inside both sets of storage slots. A U-shaped rod is provided at one end of the drive mechanism. A reciprocating bending mechanism is provided on the outside of the U-shaped rod. The clamping mechanism is located on the outer wall of the front end of the U-shaped frame near the top. A connecting test mechanism is fixedly installed on the outer wall of the front end of the test frame near the bottom. The reciprocating bending mechanism includes reciprocating cylinders symmetrically fixedly installed on both sides inside the U-shaped rod. The telescopic ends of the two reciprocating cylinders are respectively fixedly connected to a first push plate and a second push plate. One end of the first push plate and the second push plate slides in cooperation with the outside of the U-shaped rod. Support arms are fixedly installed at both ends of the outer wall of the first push plate. The support arms are inclined. A connecting frame is fixedly installed on the side of the support arm away from the first push plate. A connecting shaft is rotatably installed inside the connecting frame. A sleeve is fixedly sleeved on the outside of the connecting shaft. A connecting arm is fixedly installed on one side of the outer wall of the second push plate. A notch is opened inside the end of the connecting arm away from the second push plate. A clamping roller is fixedly installed inside the notch. The sleeve includes a connecting rod fixedly sleeved on the outside of the connecting shaft, and a U-shaped bracket is fixedly installed at the end of the connecting rod. A mounting component is provided on one side of the inside of the U-shaped bracket. The mounting component includes a retaining sleeve that is fixedly embedded inside one side of the U-shaped retaining seat. A retaining pin is slidably inserted inside the side of the U-shaped retaining seat away from the retaining sleeve, and the retaining pin is threadedly engaged with the retaining sleeve.

2. The cable bending tester according to claim 1, characterized in that, The driving mechanism includes a screw, a slide bar, and a second motor. The screw and slide bar are respectively disposed inside two sets of storage slots. The screw is rotatably disposed inside one set of storage slots, and the slide bar is vertically installed inside the other set of storage slots. The second motor is fixedly installed on the lower end face of one side of the U-shaped frame, and the output end of the second motor is connected to the end of the screw.

3. The cable bending tester according to claim 2, characterized in that, Slider blocks are fixedly installed on both sides of the outer wall of the rear end of the U-shaped rod. The sliders are connected to the screw and the slide rod respectively. The sliders are threaded with the screw through a machined threaded surface, and the other set of sliders are slidably engaged with the slide rod through a round hole.

4. The cable bending tester according to claim 1, characterized in that, The clamping mechanism includes a mounting base, which is fixedly installed on the outer wall of the front end of the U-shaped frame and near the top. Clamping cylinders are symmetrically installed on both sides inside the mounting base, and clamping blocks are fixedly installed on the telescopic ends of the clamping cylinders.

5. A cable bending tester according to claim 4, characterized in that, The clamping blocks have cable-locking grooves on their adjacent sides. One end of the cable body is clamped in the two sets of cable-locking grooves, while the other end passes through the two sets of U-shaped clamping seats. The lower end of the cable body is wound to form a closed rope loop. A hook is hung inside the rope loop, and a weight is fixedly installed at the lower end of the hook.

6. A cable bending tester according to claim 1, characterized in that, The fasteners include connectors that are fixedly installed on both sides of the outer wall of the U-shaped frame. The connectors are connected to the rotating disk by spirally inserted fixing bolts.

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