A long-stroke test machine for drag chain

Abstract

The utility model relates to the technical field of tow chain testing machine, specifically disclose a kind of tow chain long-stroke use testing machine, including overall frame, the top of frame is fixedly arranged with guide rail, the side of one end of guide rail is fixedly arranged with driving motor cabinet, the side of the other end of guide rail is fixedly arranged with gear cabinet, the output shaft end of motor is fixedly arranged with first toothed belt, the other end of first toothed belt is transmission connection with gear cabinet, the outside of first toothed belt is fixedly arranged with reciprocator, and the bottom of reciprocator is rotatably provided with a plurality of rubber wheels by pivot.The utility model realizes reciprocator stable operation by rubber wheel, reduces friction and vibration, improves stability.Guide groove effectively restricts tow chain, prevents deviation, distortion, ensures its linear motion in long stroke, and truly simulates working condition.

Description

Technical Field

[0001] This utility model relates to the technical field of cable chain testing machines, specifically a cable chain long-stroke testing machine. Background Technology

[0002] With the continuous improvement of industrial automation, cable chains, as key components for protecting and guiding cables, pipes, and other pipelines among moving parts, directly affect the reliability and maintenance costs of equipment due to their service life, wear resistance, and operational stability. Therefore, conducting long-stroke, high-frequency durability tests on cable chains has become an important part of quality control. Existing testing equipment generally uses reciprocating motion to simulate actual working conditions of cable chains in order to evaluate their comprehensive performance under complex environments.

[0003] In existing technologies, reciprocating mechanisms typically employ sliding contact or rigid roller support during testing, resulting in high running resistance and significant vibration. This can easily cause fatigue damage to the cable chain connection points, affecting test stability. Therefore, a testing machine for long-stroke cable chains is provided. Utility Model Content

[0004] The purpose of this invention is to provide a long-stroke cable chain testing machine to solve the problem in the background art where, during the testing process, the reciprocating mechanism usually adopts sliding contact or rigid roller support, resulting in high running resistance, obvious vibration, easy fatigue damage to the cable chain connection parts, and affecting the stability of the test.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a long-stroke cable chain testing machine, comprising an overall frame, a guide rail fixedly mounted at the top of the frame, a drive motor cabinet fixedly mounted on one side of one end of the guide rail, a gear cabinet fixedly mounted on one side of the other end of the guide rail, a first toothed belt fixedly mounted on the output shaft end of the motor, the other end of the first toothed belt being connected to the gear cabinet for transmission, a reciprocating machine fixedly mounted on the outer side of the first toothed belt, a plurality of rubber wheels rotatably mounted at the bottom end of the reciprocating machine via a rotating shaft, the bottom ends of the rubber wheels being movably abutting against the top of the guide rail, a plurality of support columns fixedly mounted at the bottom end of the guide rail, an expandable cable chain bracket fixedly mounted at the bottom end of the support columns, and a guide groove mounted at the top end of the expandable cable chain bracket; The reciprocating machine moves back and forth on the guide rail via rubber wheels. The guide groove constrains the cable chain to maintain a straight line during long strokes, and the drive motor cabinet adjusts the moving speed of the reciprocating machine.

[0006] Linear sensors are fixedly installed at both ends of the guide rail, and a guide groove side plate support frame is fixedly installed at the top of the expandable drag chain bracket, with a guide groove fixedly installed at the top of the guide groove side plate support frame.

[0007] The overall frame is fixedly equipped with a leveling seat at the bottom, an extension cable chain frame is fixedly equipped on one side of the overall frame, and a slide rail is fixedly equipped on the inner side of the extension cable chain frame.

[0008] The extension cable chain frame is equipped with a drive motor on one side, a slide rail connecting block on one side of the slide rail, and a second toothed belt on one side of the slide rail connecting block.

[0009] The extended drag chain frame has a rotatable gear bearing at its top, and one end of the second toothed belt is connected to the output shaft of the drive motor.

[0010] The other end of the second toothed belt is connected to the gear bearing for transmission, and a quick-release clamp is fixedly installed at the top of the slide rail connecting block.

[0011] This utility model has at least the following beneficial effects: The reciprocating machine uses rubber wheels to move back and forth on guide rails, employing rolling friction to effectively reduce running resistance, lessen the load on the drive system, and improve energy efficiency. The rubber wheels have excellent shock absorption properties, absorbing impacts and vibrations during movement, resulting in smoother operation, preventing additional damage to the cable chain, ensuring stable and reliable testing, and extending the equipment's lifespan. The guide grooves provide forced guidance for the cable chain during long strokes, effectively preventing problems such as twisting, knotting, or even breakage due to weight-bearing or inertial deviation. The guide grooves ensure the cable chain bends symmetrically along a straight trajectory, realistically simulating actual operating conditions, reducing abnormal wear, and making test results more accurately reflect the cable chain's performance, thus improving the scientific rigor and reliability of the test. The drive motor cabinet allows for adjustable reciprocating machine speed, enabling stepless speed regulation. Users can set low-speed, high-speed, or variable-speed test programs according to different cable chain usage requirements, flexibly simulating various real-world application scenarios and meeting different testing standards. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall front view of the present invention; Figure 3 This is a schematic diagram of the overall side view structure of this utility model; Figure 4 This is a side view of the overall structure of this utility model.

[0013] In the diagram: 1. Overall frame; 2. Guide rail; 3. Drive motor cabinet; 4. Gear cabinet; 5. First toothed belt; 6. Reciprocating machine; 7. Rubber wheel; 8. Support column; 9. Expandable cable chain bracket; 10. Guide groove; 11. Linear sensor; 12. Guide groove side plate support frame; 13. Leveling seat; 14. Expandable cable chain frame; 15. Slide rail; 16. Drive motor; 17. Slide rail connecting block; 18. Second toothed belt; 19. Gear bearing; 20. Quick-release clamp. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figures 1-4 This utility model provides a technical solution: a long-stroke cable chain testing machine, comprising an overall frame 1, guide rail 2, drive motor cabinet 3, gear cabinet 4, first toothed belt 5, reciprocating machine 6, rubber wheel 7, support column 8, expandable cable chain bracket 9, guide groove 10, linear sensor 11, guide groove side plate support frame 12, leveling seat 13, expandable cable chain frame 14, slide rail 15, drive motor 16, slide rail connecting block 17, second toothed belt 18, gear bearing 19, and quick-release clamp 20, etc. The overall frame 1, as the main support structure of the entire testing device, is welded from steel and has sufficient strength and rigidity. A horizontally set guide rail 2 is fixedly installed at the top of the overall frame 1 to provide a motion track for the reciprocating machine 6. A drive motor cabinet 3 is fixedly installed on one side of one end of the guide rail 2, and the other end... A gear cabinet 4 is fixedly installed on one side of the drive motor cabinet 3. The output shaft of the drive motor in the drive motor cabinet 3 is fixedly connected to one end of the first toothed belt 5. The other end of the first toothed belt 5 passes around the driven gear in the gear cabinet 4 and forms a meshing transmission with it. The outer side of the first toothed belt 5 is fixedly connected to the reciprocating machine 6 through a connecting plate. Several rubber wheels 7 are rotatably installed at the bottom of the reciprocating machine 6 through a rotating shaft. The bottom of the rubber wheels 7 rolls in contact with the top of the guide rail 2, so that the reciprocating machine 6 can slide smoothly along the guide rail 2. The reciprocating machine 6 performs left and right reciprocating motion on the guide rail 2 through the rubber wheels 7. Its motion is achieved by the motor in the drive motor cabinet 3 driving the first toothed belt 5 in forward and reverse rotation. The drive motor cabinet 3 can adjust the motor speed through the built-in frequency converter or the external electrical control system, thereby precisely controlling the moving speed of the reciprocating machine 6 to adapt to the testing requirements of different models of cable chains.

[0016] Linear sensors 11 are fixedly installed at both ends of the guide rail 2 to detect the position of the reciprocating machine 6 in real time. When the reciprocating machine 6 moves to the left or right limit position of the guide rail 2, the linear sensor 11 senses the signal and feeds it back to the control system. The control system then controls the motor in the drive motor cabinet 3 to reverse, so that the reciprocating machine 6 automatically changes the direction of movement, realizing continuous and stable reciprocating cycle testing. Several support columns 8 are fixedly connected to the bottom end of the guide rail 2. The bottom end of the support column 8 is fixedly connected to the expandable cable chain bracket 9. The expandable cable chain bracket 9 adopts an aluminum profile structure, which has the advantages of being lightweight, easy to assemble and expand. A guide groove side plate support frame 12 is installed at the top of the expandable cable chain bracket 9. A guide groove 10 is fixedly installed at the top of the guide groove side plate support frame 12. The guide groove 10 is used to accommodate and constrain the cable chain under test, ensuring that it maintains a straight trajectory during long-stroke reciprocating motion, preventing the cable chain from shifting, twisting or breaking due to its own weight or motion inertia, effectively simulating the operating state under actual working conditions.

[0017] A leveling seat 13 is fixedly installed at the four corners of the bottom of the overall frame 1. The height of the overall frame 1 can be adjusted by rotating the leveling seat 13 to ensure that the entire device is placed stably and the guide rail 2 remains horizontal, avoiding test errors or equipment malfunctions caused by device tilt. An extension drag chain frame 14 is fixedly installed on one side of the overall frame 1. The extension drag chain frame 14 also adopts an aluminum profile structure, which facilitates the expansion and installation of test components of different sizes. A slide rail 15 is vertically fixed on one side of the interior of the extension drag chain frame 14 to provide vertical movement guidance for the slide rail connecting block 17. A drive motor 16 is fixedly installed on the exterior side of the extension drag chain frame 14, and its output shaft extends into the frame. The slide rail connecting block 1 is slidably installed on the slide rail 15. 7. A second toothed belt 18 is fixedly connected to one side of the slide rail connecting block 17. A gear bearing 19 is rotatably installed at the top of the inside of the extended cable chain frame 14. One end of the second toothed belt 18 meshes with the output shaft of the drive motor 16, and the other end passes around the gear bearing 19 and meshes with it. When the drive motor 16 runs in both forward and reverse directions, the slide rail connecting block 17 is driven to move up and down along the slide rail 15 through the second toothed belt 18, thereby realizing the bending life test of the cable chain in the vertical posture. A quick-release clamp 20 is fixedly installed at the top of the slide rail connecting block 17 for quickly and reliably connecting the moving end of the cable chain to be tested. The design of the quick-release clamp 20 facilitates the quick replacement of different models and specifications of cable chains, which significantly improves the testing efficiency.

[0018] In actual operation, the overall frame 1 is first adjusted to a horizontal state using the leveling seat 13. Specifically, the operator uses a high-precision level to measure along the longitudinal and transverse directions of the guide rail 2. Based on the bubble deviation of the level, the leveling seat 13 at each support point is rotated one by one, repeatedly adjusting until the guide rail 2 remains horizontal throughout its entire length. This ensures that the reciprocating machine 6 experiences uniform force during operation, preventing excessive force on one side of the cable chain due to frame tilt, which could affect the accuracy of the test results. Then, the fixed end of the cable chain to be tested is fixed in the middle position of the guide groove 10. Specifically, based on the model and bending radius requirements of the cable chain to be tested, a guide groove 10 of appropriate specifications is selected and installed on the guide groove side plate support frame 12. A special fixing clamp is used to firmly lock the fixed end of the cable chain at the geometric center point of the guide groove 10, ensuring that the cable chain forms a symmetrical "C" shaped bend during reciprocating motion, maximizing the effective stroke of the cable chain. At the same time, the moving end of the cable chain is reliably connected to the connecting seat of the reciprocating machine 6 through a high-strength connector. During connection, it is necessary to ensure that the cable chain is in a naturally relaxed state in the initial position, without pre-tension or twisting, for long-stroke sliding test.

[0019] Meanwhile, the fixed end of another cable chain to be tested is fixed at an appropriate height position on the extended cable chain frame 14. Specifically, based on the total length of the cable chain and the required bending stroke, a suitable mounting hole is selected on the vertical column of the extended cable chain frame 14. A fixing bracket is used to install the fixed end of the cable chain at the midpoint of the frame height to ensure that the chain lengths on both sides are symmetrical during vertical movement. Then, the moving end of the cable chain is quickly locked to the connecting plate on the top of the slide rail connecting block 17 using the quick-release clamp 20. The quick-release clamp 20 adopts a knob or lever structure, which can be operated with one hand to quickly complete the clamping and disassembly, significantly improving the efficiency of test preparation. It is used for standing use tests to simulate the application scenario of the cable chain reciprocating vertically. The horizontal reciprocating and vertical reciprocating movement speeds and strokes are adjusted by the drive motor cabinet 3 and the drive motor 16, respectively. The control panel on the motor cabinet 3 or the external electrical control system sets the motor speed, thereby controlling the linear speed of the first toothed belt 5 and realizing stepless adjustment of the moving speed of the reciprocating machine 6. At the same time, the horizontal reciprocating stroke length is set by adjusting the installation position of the linear sensor 11 on the guide rail 2. For the vertical test section, the lifting speed of the second toothed belt 18 is controlled by adjusting the speed of the drive motor 16, and the vertical movement stroke of the slide rail connecting block 17 is precisely controlled by changing the number of turns of the second toothed belt 18 on the gear bearing 19 or setting electronic limits to meet the test requirements of different working conditions. After the test is started, the motor in the drive motor cabinet 3 drives the first toothed belt 5 to drive the reciprocating machine 6 to reciprocate along the guide rail 2. When the reciprocating machine 6 touches the linear sensor 11 at the end of the guide rail 2, the sensor sends a signal, and the control system immediately commands the motor to reverse, realizing automatic reversal.

[0020] Similarly, the drive motor 16 drives the second toothed belt 18 to drive the slide rail connecting block 17 to move up and down along the slide rail 15, forming a continuous cycle. The entire system can run continuously for tens of thousands or even hundreds of thousands of cycles in an unattended state, comprehensively assessing the service life of the cable chain under long-term dynamic load, the wear degree of the chain links, the internal cable protection capability, and the anti-sagging performance in an overhead state. The expandable cable chain bracket 9 and the expandable cable chain frame 14, made of aluminum profiles, support the simultaneous testing of multiple models of cable chains. Specifically, multiple guide slots 10 are installed side by side on the expandable cable chain bracket 9, and different models or specifications of cable chains are placed in each guide slot for horizontal sliding tests. At the same time, multiple sets of slide rails 15 and slide rail connecting blocks 17 are set on the expandable cable chain frame 14 to realize the vertical standing test of multiple cable chains. All test units can independently control the operating parameters and monitor the operating status in real time through a unified electronic control system, thereby completing the comprehensive performance evaluation of multiple models of cable chains in parallel on the same equipment, greatly improving testing efficiency and shortening the product verification cycle.

[0021] Through the above-described structural design, this utility model achieves significant technological progress and practical value. Specific beneficial effects are as follows: The reciprocating machine 6 reciprocates on the guide rail 2 via rubber wheels 7. This structural design results in rolling friction between the reciprocating machine 6 and the guide rail 2, which significantly reduces frictional resistance during movement compared to traditional sliding friction, reducing the load on the drive motor cabinet 3 and improving energy efficiency. Simultaneously, the rubber wheels 7 have excellent shock absorption and buffering performance, effectively absorbing impacts and vibrations during reciprocating motion, making the reciprocating machine 6 run more smoothly, preventing loosening or damage to the cable chain connection due to severe vibration, extending the service life of the testing equipment itself, and ensuring the uniformity and stability of the cable chain force during testing, thus improving the accuracy and reliability of the test data.

[0022] The guide groove 10 constrains the cable chain to maintain a straight line during long-stroke motion. This design effectively solves problems such as offset, twisting, knotting, and even breakage that easily occur in long-stroke cable chains during high-speed reciprocating motion. The guide groove 10 provides a precise guiding path for the cable chain, forcing it to move within a preset straight track. This prevents the cable chain from sagging due to its own weight or deviating from the center line due to inertia, ensuring that the cable chain is always in an ideal symmetrical bending state during the test, realistically simulating the operating environment under actual working conditions. At the same time, the constraint effect of the guide groove reduces friction and interference between the cable chain and the surrounding environment, reduces abnormal wear, and makes the test results more accurately reflect the material and structural performance of the cable chain itself. This avoids misjudgments caused by external interference and improves the scientificity and impartiality of the test.

[0023] The drive motor cabinet 3 adjusts the moving speed of the reciprocating machine 6, giving this testing machine high flexibility and adaptability. Through the speed control system (such as a frequency converter) within the drive motor cabinet 3, the moving speed of the reciprocating machine 6 can be steplessly adjusted, thus simulating the actual operating speed of the cable chain under different application scenarios, covering various working conditions from low-speed precision motion to high-speed automated production lines. Users can precisely set the test speed according to the rated speed parameters of different cable chain models or specific test standards to conduct accelerated life tests or standard working condition verification, greatly expanding the application range of the equipment. Simultaneously, the speed adjustment function helps to study the influence of speed on cable chain wear, heat generation, and lifespan, providing strong data support for the optimized design and selection of cable chain products. In summary, this utility model, through three core designs—rubber wheel guidance, guide groove constraint, and motor cabinet speed control—achieves high stability, high simulation accuracy, and high adaptability in the cable chain testing process. It not only improves testing accuracy and equipment reliability but also significantly enhances testing efficiency and functional diversity, possessing outstanding substantive features.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A testing machine for long-stroke cable chains, characterized in that: The device includes an overall frame, with a guide rail fixedly mounted at the top. A drive motor cabinet is fixedly mounted on one side of one end of the guide rail, and a gear cabinet is fixedly mounted on one side of the other end of the guide rail. A first toothed belt is fixedly mounted on the output shaft of the motor, and the other end of the first toothed belt is connected to the gear cabinet for transmission. A reciprocating machine is fixedly mounted on the outer side of the first toothed belt. Several rubber wheels are rotatably mounted on the bottom of the reciprocating machine via a rotating shaft. The bottom ends of the rubber wheels movably abut against the top of the guide rail. Several support columns are fixedly mounted on the bottom of the guide rail, and an expandable cable chain bracket is fixedly mounted on the bottom of each support column. A guide groove is provided at the top of the expandable cable chain bracket. The reciprocating machine reciprocates on the guide rail via the rubber wheels. The guide groove constrains the cable chain to maintain a straight line during long-stroke movement. The drive motor cabinet adjusts the moving speed of the reciprocating machine.

2. The cable chain long-stroke testing machine according to claim 1, characterized in that: Linear sensors are fixedly installed at both ends of the guide rail, and a guide groove side plate support frame is fixedly installed at the top of the expandable drag chain bracket, with a guide groove fixedly installed at the top of the guide groove side plate support frame.

3. The cable chain long-stroke testing machine according to claim 2, characterized in that: A leveling seat is fixedly installed at the bottom of the overall frame, an extension cable chain frame is fixedly installed on one side of the overall frame, and a slide rail is fixedly installed on the inner side of the extension cable chain frame.

4. The cable chain long-stroke testing machine according to claim 3, characterized in that: A drive motor is fixedly installed on one side of the extended drag chain frame, a slide rail connecting block is fixedly installed on one side of the slide rail, and a second toothed belt is fixedly installed on one side of the slide rail connecting block.

5. The cable chain long-stroke testing machine according to claim 4, characterized in that: The top of the extended drag chain frame is rotatably equipped with a gear bearing, and one end of the second toothed belt is connected to the output shaft of the drive motor.

6. The cable chain long-stroke testing machine according to claim 5, characterized in that: The other end of the second toothed belt is connected to the gear bearing for transmission, and a quick-release clamp is fixedly installed at the top of the slide rail connecting block.

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