Optical cable torsion test device

Abstract

This utility model relates to the field of household daily necessities, and more particularly to an optical cable torsion testing device. The optical cable torsion testing device includes a torsion machine body, dovetail frames, a fixing component, rotating wheels, and a gravity block. The torsion machine body houses a rotating frame and a motor that drives the rotating frame. Dovetail frames are equidistantly installed inside the rotating frame. A fixing component is installed between the rotating frame and the dovetail frames, used for quickly fixing the optical cable to be tested. Rotating wheels are symmetrically installed at equidistant intervals on the side walls of the torsion machine body. The optical cable torsion testing device provided by this utility model, through the design of the fixing component, achieves rapid fixing and unlocking of the optical cable to be tested, completely changing the traditional fixing mode that relies on tightening bolts one by one. The entire fixing and disassembly process does not require repeated rotation of bolts, greatly reducing labor and time costs and significantly improving overall testing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of household daily necessities, and in particular to a fiber optic cable torsion testing device. Background Technology

[0002] As the core carrier of information and energy transmission, the performance stability of optical cables directly determines the operational safety and efficiency of the entire system. With the rapid development of the communications field, optical cables not only need to maintain good transmission characteristics under normal conditions, but also need to withstand the mechanical forces under complex working conditions. Among these, torsional stress is one of the mechanical loads that optical cables frequently face during laying, installation, and long-term use. Therefore, conducting rigorous torsional performance tests on optical cables before they leave the factory and before they are put into use has become a key step in ensuring the quality of optical cable products and the reliability of engineering projects.

[0003] The core function of existing torsion testing devices is to simulate the torsion conditions of optical cables in actual use. By applying a torsion action at a specific angle and speed to the optical cable, the device observes and records the structural changes and transmission performance attenuation of the optical cable, and then evaluates whether its torsion resistance meets the relevant standard requirements.

[0004] However, most existing optical cable torsion testing devices use traditional bolt tightening to fix optical cable samples. This method requires the operator to place the sample in the clamp and then press the cable axially with the bolts to achieve fixation. While this method can ensure stability to some extent, it is cumbersome, time-consuming, and labor-intensive when dealing with batch optical cable testing scenarios. On the one hand, after fixing each sample, the operator needs to repeat the bolt tightening operation, which significantly increases the operation time for batch testing of multiple samples, severely reducing overall testing efficiency. On the other hand, during bolt tightening, the operator's force and tightening sequence are difficult to maintain consistently, easily leading to uneven fixing force on the optical cable sample. This can cause displacement during torsion due to loose fixing, affecting the accuracy of the test data.

[0005] Therefore, it is necessary to provide a new optical cable torsion testing device to solve the above-mentioned technical problems. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides an optical cable torsion testing device.

[0007] The optical cable torsion testing device provided by this utility model includes: a torsion machine body, a dovetail frame, a fixing component, rotating wheels, and gravity blocks. The inside of the torsion machine body is equipped with a rotating frame and a motor that drives the rotating frame to rotate. The inside of the rotating frame is equipped with dovetail frames at equal intervals. A fixing component is installed between the rotating frame and the dovetail frames. The fixing component is used to quickly fix the optical cable to be tested. Rotating wheels are symmetrically installed at equal intervals on the side walls of the torsion machine body. Gravity blocks are slidably installed at equal intervals on the bottom of the torsion machine body.

[0008] Preferably, the fixing component includes: a dovetail clip, a spring, and a slide rod. The rotating frame has dovetail clips slidably connected at equal intervals to the dovetail clip frame. Each dovetail clip has an installation hole inside. A spring is fixedly connected to the inner wall of each installation hole. The other end of the spring is fixedly connected to a slide rod, and the slide rod is slidably connected to the inner wall of the corresponding installation hole.

[0009] Preferably, the outer wall of the slide bar is symmetrically provided with limiting grooves, and the inside of the rotating frame is symmetrically fixedly connected with protrusions. The protrusions are placed inside the limiting grooves and are slidably connected to their inner walls.

[0010] Preferably, the other end of each slide rod is fixedly connected to an extrusion plate, and the outer wall of each slide rod is fitted with a second spring. One end of each second spring contacts the outer wall of the rotating frame, and the other end contacts the outer wall of the corresponding extrusion plate.

[0011] Preferably, a support rod is fixedly connected to the outer wall of the rotating frame, and an eccentric wheel corresponding to the extrusion plate is rotatably connected to the outer wall of the support rod at equal intervals. A lever is fixedly connected to the top of each eccentric wheel.

[0012] Preferably, the sidewalls of the eccentric wheels are provided with slots, and the interior of the rotating frame is provided with mating holes at equal intervals. The inner walls of the mating holes are all fixedly connected with springs three, and the other end of each spring three is fixedly connected with a spherical block. The spherical block is slidably connected to the inner wall of the corresponding mating hole.

[0013] Preferably, the interior of each gravity block is provided with an irregular groove, one end of which is designed as an arc. A top block is slidably connected to the inner wall of each irregular groove. A pull rod is fixedly connected to one end of the top block. A spring is sleeved on the outer wall of the pull rod. One end of the spring contacts the end face of the top block, and the other end contacts the inner wall of the irregular groove.

[0014] Compared with related technologies, the optical cable torsion testing device provided by this utility model has the following advantages:

[0015] The design of the fixing components enables rapid fixing and unlocking of the optical cable under test, completely changing the traditional fixing mode that relies on tightening bolts one by one; the entire fixing and disassembly process does not require repeated rotation of bolts, which greatly reduces labor and time costs and significantly improves the overall testing efficiency.

[0016] Through multiple structural designs, the uniformity and stability of the optical cable fixing force are achieved: the symmetrically opened limiting grooves on the outer wall of the slide bar and the protrusions inside the rotating frame form an axial guiding structure, ensuring that the slide bar drives the dovetail block to move smoothly along the axial direction, avoiding the clamping force from being biased to one side due to radial offset; the spring inside the dovetail block has an elastic buffering effect. When the dovetail block contacts the optical cable and continues to move, the compression of the spring can be automatically adapted according to the outer diameter of the optical cable, so that the clamping force of the dovetail block on the optical cable is kept within a preset stable range. Even if there are slight differences in the outer diameter of different samples, uniform clamping can be achieved through the elastic adjustment of the spring; thirdly, the locking structure formed by the groove on the side wall of the eccentric wheel and the spherical block can lock the position of the eccentric wheel after the optical cable is clamped, preventing the eccentric wheel from loosening due to vibration and other factors during the test, thereby ensuring the continuous stability of the clamping force and completely eliminating the influence of human operation differences on the fixing force.

[0017] The device's structural design fully considers the ease of use and safety for operators, significantly reducing the operational threshold. In terms of ease of operation, fixing and disassembling the optical cable are accomplished through simple mechanical actions: fixing the top of the optical cable only requires pushing the lever, and fixing the bottom only requires pulling the lever, without the need for additional tools such as wrenches and screwdrivers. Even non-professional operators can master the operation process after simple training. Attached Figure Description

[0018] Figure 1 A schematic diagram of the optical cable torsion testing device provided by this utility model;

[0019] Figure 2 for Figure 1 The diagram shows the structure of the rotating frame;

[0020] Figure 3 for Figure 2 The diagram shows the structure at point A.

[0021] Figure 4 for Figure 1 The diagram shows a cross-sectional view of the gravity block.

[0022] The following are the labels in the diagram: 1. Torsion machine body; 2. Rotating frame; 3. Motor; 4. Dovetail frame; 5. Rotating wheel; 6. Gravity block; 7. Dovetail block; 8. Spring 1; 9. Slide rod; 10. Limiting slide groove; 11. Extrusion plate; 12. Spring 2; 13. Eccentric wheel; 14. Lever; 15. Spring 3; 16. Spherical block; 17. Top block; 18. Pull rod; 19. Spring 4. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0025] Please see Figures 1 to 4 A torsion testing device for optical cables includes: a torsion machine body 1, a dovetail frame 4, a fixing component, rotating wheels 5, and a gravity block 6. The torsion machine body 1 houses a rotating frame 2 and a motor 3 that drives the rotating frame 2. Dovetail frames 4 are equidistantly installed inside the rotating frame 2. A fixing component is installed between the rotating frame 2 and the dovetail frames 4 for quickly fixing the optical cable to be tested. Rotating wheels 5 are symmetrically installed at equal intervals on the side walls of the torsion machine body 1. Gravity blocks 6 are slidably installed at equal intervals on the bottom of the torsion machine body 1. The fixing component includes: dovetail blocks 7, springs 8, and sliding rods 9. Dovetail blocks 7 corresponding to the dovetail frames 4 are slidably connected at equal intervals inside the rotating frame 2. Each dovetail block 7 has an installation hole inside, and springs 8 are fixedly connected to the inner walls of each installation hole. A sliding rod 9 is fixedly connected to the other end of each spring 8, and the sliding rod 9 is aligned with the corresponding installation hole. The inner wall is slidably connected, and the outer wall of the slide rod 9 is symmetrically provided with limiting grooves 10. The inner wall of the rotating frame 2 is symmetrically fixedly connected with protrusions, which are placed inside the limiting grooves 10 and slidably connected to their inner walls. The other end of the slide rod 9 is fixedly connected with a pressing plate 11, and the outer wall of the slide rod 9 is fitted with a spring 12. One end of the spring 12 is in contact with the outer wall of the rotating frame 2, and the other end is in contact with the outer wall of the corresponding pressing plate 11. The outer wall of the rotating frame 2 is fixedly connected with a support rod, and the outer wall of the support rod is equidistantly rotatably connected with an eccentric wheel 13 corresponding to the pressing plate 11. The top of the eccentric wheel 13 is fixedly connected with a lever 14, and the side wall of the eccentric wheel 13 is provided with a slot. The inner wall of the rotating frame 2 is provided with mating holes at equal intervals, and the inner wall of the mating holes is fixedly connected with a spring 15. The other end of the spring 15 is fixedly connected with a spherical block 16, and the spherical block 16 is slidably connected to the inner wall of the corresponding mating hole.

[0026] It should be noted that spring 1 (8), spring 2 (12), spring 3 (15), and spring 4 (19) are all compression springs.

[0027] Please see Figure 1 and Figure 4The interior of each gravity block 6 is provided with irregular grooves, one end of each irregular groove is designed as an arc, and the inner wall of each irregular groove is slidably connected to a top block 17. One end of the top block 17 is fixedly connected to a pull rod 18, and the outer wall of the pull rod 18 is fitted with a spring 19. One end of the spring 19 contacts the end face of the top block 17, and the other end contacts the inner wall of the irregular groove.

[0028] It should be noted that when fixing the optical cable, pulling the lever 18 causes the top block 17, which is fixedly connected to it, to slide along the inner wall of the irregular groove. During the sliding process, the top block 17 compresses the spring 19 inside the irregular groove, causing the spring 19 to contract and store elastic force. At this time, the top block 17 separates from the arc-shaped inner wall at one end of the irregular groove, and a channel is formed inside the irregular groove for the optical cable to pass through.

[0029] The working principle of the optical cable torsion testing device provided by this utility model is as follows:

[0030] Before the test, the device was in its initial state. Eccentric wheel 13 was not under pressure, spring 12 was in its natural extension state, and the compression plate 11 was not displaced. Slide rod 9 remained stationary due to the cooperation of the limiting slide groove 10 and the protrusion. Sufficient clearance was maintained between dovetail block 7 and dovetail frame 4. Spring 15 was in its natural state, and part of spherical block 16 extended from its mating hole, not contacting the slot of eccentric wheel 13. The operator first placed the top ends of the optical cables to be tested one by one into the dovetail frames 4 evenly distributed inside the rotating frame 2, ensuring that the axis of the optical cable top end was aligned with the central axis of the dovetail frame 4, preparing for subsequent clamping. The operator then pushed the lever 14 on the top of the corresponding eccentric wheel 13 clockwise. The lever 14 caused the eccentric wheel 13 to rotate synchronously around the axis of the support rod. The side wall of 13 first contacts the spherical block 16 and generates a squeezing force. Under the squeezing force, the spherical block 16 slides into the hole along the inner wall of the mating hole, while compressing the spring 15 until the spherical block 16 is completely retracted into the mating hole. As the eccentric wheel 13 continues to rotate clockwise, its outer wall gradually contacts the squeezing plate 11 and applies a horizontal thrust. Under the thrust, the squeezing plate 11 moves towards the dovetail block 7, while squeezing the spring 12 sleeved on the outer wall of the slide rod 9, causing the spring 12 to undergo elastic deformation and store elastic force. Since there are protrusions fixed at equal intervals inside the rotating frame 2, and the protrusions are embedded in the symmetrically opened limiting grooves 10 on the outer wall of the slide rod 9, an axial guiding structure is formed. Under the drive of the squeezing plate 11, the slide rod 9 moves smoothly along its own axis, avoiding radial offset or rotation.

[0031] The axial movement of the slide bar 9 drives the dovetail block 7 to move into the dovetail frame 4 via the spring 8. When the front end of the dovetail block 7 contacts the optical cable inside the dovetail frame 4, the optical cable generates a reverse resistance to the dovetail block 7. At this time, the slide bar 9 continues to move under the continuous thrust of the eccentric wheel 13, which in turn pushes the dovetail block 7 to overcome the resistance of the optical cable and continue to move forward, causing the spring 8 in the mounting hole inside the dovetail block 7 to be compressed. As the compression of the spring 8 gradually increases, the elastic reaction force generated by it is transmitted to the surface of the optical cable through the dovetail block 7, so that the dovetail block 7 and the inner wall of the dovetail frame 4 form a ring-shaped clamping of the optical cable until the optical cable is firmly fixed inside the dovetail frame 4 and the clamping force reaches the stable state required for the test.

[0032] When lever 14 drives eccentric wheel 13 to rotate 90° clockwise, the pre-set groove on the outer wall of eccentric wheel 13 is aligned with the mating hole on rotating frame 2. At this time, spring 3 15 is no longer squeezed by the outer wall of eccentric wheel 13 and begins to release the stored elastic force, pushing spherical block 16 to slide outward along the inner wall of the mating hole until the hemisphere of spherical block 16 is tightly engaged with the inner wall of the groove. This engagement structure can limit the reverse rotation of eccentric wheel 13, thereby locking the position of compression plate 11, slide bar 9 and dovetail block 7, ensuring that the top of the optical cable remains in a stable clamped state during the test. The operator repeats the above operation on lever 14 corresponding to the other dovetail frames 4 to achieve synchronous fixing of multiple sets of optical cable tops.

[0033] After all the optical cable tops are fixed, the operator places the middle area of ​​each group of optical cables between two rotating wheels 5 that are symmetrically installed at equal intervals on the side wall of the twisting machine body 1. The rotating wheels 5 adopt a freely rotating rolling structure, and their spacing matches the outer diameter of the optical cable. When the optical cable is placed between the two wheels, the wheel surface of the rotating wheel 5 is in contact with the outer wall of the optical cable, which will not cause squeezing damage to the optical cable, and can roll synchronously with the rotation of the optical cable during the twisting process, providing axial guidance and radial limit for the optical cable, avoiding the displacement, shaking or local bending of the middle part of the optical cable during twisting, and ensuring that the torsional stress is evenly transmitted to the entire optical cable.

[0034] The bottom end of the optical cable is fixed by gravity block 6. At the same time, gravity block 6 can provide stable axial tension for the optical cable by its own weight, simulating the hanging condition of the optical cable in actual use. In specific operation, the operator pulls the pull rod 18 away from gravity block 6. The pull rod 18 drives the top block 17 fixedly connected to it to slide along the inner wall of the irregular groove. During the sliding process, the top block 17 squeezes the spring 19 in the irregular groove, causing the spring 19 to contract and store elastic force. At this time, the top block 17 separates from the arc-shaped inner wall at one end of the irregular groove, and a channel for the optical cable to pass through is formed inside the irregular groove.

[0035] The operator inserts the bottom end of the optical cable into the shaped groove through the channel, adjusts the length of the optical cable to ensure that it hangs naturally without additional stretching or slack, and then releases the pull rod 18; the spring 19 immediately releases its elastic force, pushing the top block 17 to slide in the opposite direction along the inner wall of the shaped groove until the end face of the top block 17 is tightly attached to the outer wall of the optical cable. At the same time, the bottom end of the optical cable is firmly pressed against the arc-shaped surface at one end of the shaped groove. The arc-shaped surface design increases the contact area with the optical cable, ensuring that the bottom end of the optical cable does not undergo axial displacement or rotational shift during the test; the remaining gravity blocks 6 complete the fixing of the corresponding bottom ends of the optical cables in the same manner.

[0036] After multiple optical cables have been fixed in place, the control switch of the twisting machine body 1 is activated, and the motor 3 starts to run and outputs torque. The motor 3 transmits power to the rotating frame 2 through the transmission mechanism, causing the rotating frame 2 to rotate around its own central axis at a preset speed and twist angle. The rotation of the rotating frame 2 synchronously drives the top ends of the multiple optical cables fixed on it to twist. The middle part of the optical cable rotates synchronously with the top end under the guidance of the rotating wheel 5, while the bottom end maintains a relatively stable axial position under the fixing action of the gravity block 6, thereby making the optical cable as a whole bear uniform torsional stress.

[0037] During the test, torque and angle sensors and other supporting detection elements can be used to collect data such as the torque value and torsion angle of each group of optical cables in real time. Combined with optical detection equipment, the transmission performance attenuation of the optical cables can be monitored to evaluate the torsional resistance of the optical cables. Since the device adopts a symmetrical design of multiple dovetail frames 4 and gravity blocks 6, all optical cables are tested synchronously under the same torsional parameters to ensure the comparability and accuracy of the test data.

[0038] After the test, the operator pushes the lever 14 counterclockwise, causing the eccentric wheel 13 to rotate in the opposite direction. The inner wall of the groove of the eccentric wheel 13 contacts the spherical block 16 and generates compression. Under the action of the compression force, the spherical block 16 retracts back into the mating hole, while compressing the spring 15. As the eccentric wheel 13 continues to rotate counterclockwise, its thrust on the compression plate 11 gradually disappears, and the compressed spring 12 begins to release its elasticity, pushing the compression plate 11 to reset away from the dovetail block 7. The reset of the compression plate 11 synchronously drives the slide bar 9 to move in the opposite direction along the axial direction, and the dovetail block 7 moves away from the optical cable.

[0039] During this process, the compressed spring 8 inside the dovetail clip 7 gradually releases its elasticity, further assisting the dovetail clip 7 in resetting until the eccentric wheel 13 rotates 90° counterclockwise, at which point the dovetail clip 7 completely disengages from the optical cable, releasing the clamp on the top of the optical cable. For the bottom of the optical cable, the operator pulls the lever 18 again, causing the top block 17 to slide and compress the spring 19, reopening the irregular groove channel. At this point, the bottom of the optical cable can be pulled out of the irregular groove. Then, all optical cables are disassembled in sequence, and the entire test process ends.

[0040] All standard parts used above can be purchased from the market. Irregular parts can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology. In addition, the circuit connection adopts conventional connection methods in the existing technology, which will not be described in detail here.

[0041] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A torsion testing device for optical cables, characterized in that, include: The torsion machine body (1) has a rotating frame (2) and a motor (3) that drives the rotating frame (2) to rotate inside it; Dovetail frames (4) are installed at equal intervals inside the rotating frame (2); A fixing component is installed between the rotating frame (2) and the dovetail frame (4). The fixing component is used to quickly fix the optical cable to be tested. Rotating wheels (5) are symmetrically installed at equal intervals on the side walls of the torsion machine body (1); Gravity blocks (6) are equidistantly slidably installed at the bottom of the torsion machine body (1).

2. The optical cable torsion testing device according to claim 1, characterized in that, The fixing components include: dovetail clips (7), spring 1 (8) and slide rod (9). The rotating frame (2) is equidistantly connected to dovetail clips (7) corresponding to the dovetail clip frame (4). Each dovetail clip (7) has an installation hole. The inner wall of each installation hole is fixedly connected to spring 1 (8). The other end of spring 1 (8) is fixedly connected to slide rod (9), and slide rod (9) is slidably connected to the inner wall of the corresponding installation hole.

3. The optical cable torsion testing device according to claim 2, characterized in that, The outer wall of the slide bar (9) is symmetrically provided with a limiting groove (10), and the inside of the rotating frame (2) is symmetrically fixedly connected with a protrusion. The protrusion is placed inside the limiting groove (10) and is slidably connected to its inner wall.

4. The optical cable torsion testing device according to claim 3, characterized in that, The other end of each slide rod (9) is fixedly connected to an extrusion plate (11), and the outer wall of each slide rod (9) is fitted with a second spring (12). One end of each second spring (12) is in contact with the outer wall of the rotating frame (2), and the other end is in contact with the outer wall of the corresponding extrusion plate (11).

5. The optical cable torsion testing device according to claim 4, characterized in that, The outer wall of the rotating frame (2) is fixedly connected to a support rod, and the outer wall of the support rod is equidistantly connected to an eccentric wheel (13) corresponding to the extrusion plate (11). The top of the eccentric wheel (13) is fixedly connected to a lever (14).

6. The optical cable torsion testing device according to claim 4, characterized in that, The sidewalls of the eccentric wheel (13) are provided with slots, and the interior of the rotating frame (2) is provided with mating holes at equal intervals. The inner walls of the mating holes are all fixedly connected with springs (15), and the other end of the springs (15) is fixedly connected with spherical blocks (16). The spherical blocks (16) are slidably connected to the inner walls of the corresponding mating holes.

7. The optical cable torsion testing device according to claim 1, characterized in that, The interior of each gravity block (6) is provided with irregular grooves, one end of each irregular groove is designed as an arc, and the inner wall of each irregular groove is slidably connected to a top block (17). One end of the top block (17) is fixedly connected to a pull rod (18), and the outer wall of the pull rod (18) is fitted with a spring four (19). One end of the spring four (19) contacts the end face of the top block (17), and the other end contacts the inner wall of the irregular groove.

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