Optical cable compression strength test fixture
By designing a fiber optic cable compressive strength test fixture that combines a bidirectional screw and a moving column, the problem of inconvenient fiber optic cable length adjustment was solved, and synchronous clamping of both ends of the fiber optic cable was achieved, thus improving test accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HU BEI BO XIN GUANG DIAN KE JI YOU XIAN GONG SI
- Filing Date
- 2025-05-26
- Publication Date
- 2026-07-24
AI Technical Summary
Existing optical cable compressive strength testing fixtures are difficult to adjust the clamping position flexibly according to the length of the optical cable, resulting in inconvenient operation and insufficient accuracy of test results.
A test fixture for optical cable compressive strength was designed. By cooperating with a bidirectional screw and a moving column, the spacing between the clamps is adjusted. The sliding connection of the first side convex plate, the connecting folding plate and the hollow cylinder is used to realize the synchronous movement of the clamping cone. With the help of a cylinder, the connecting folding plate is driven to descend, so as to realize the synchronous clamping of both ends of the optical cable.
It enables flexible adjustment of the clamping position according to the length of the optical cable, ensuring uniform clamping force and improving the accuracy of test results.
Smart Images
Figure CN224552894U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of test fixture technology, and in particular to a test fixture for the compressive strength of optical cables. Background Technology
[0002] Currently, in order to verify the ability of optical cables to withstand vertical pressure during laying or use, and to ensure mechanical strength and signal transmission stability, a pressure test is conducted on the optical cables during the production process. During the test, the two ends of the optical cable are clamped by a clamp, and then pressure is applied to the optical cable from top to bottom, which forms a pressure test.
[0003] However, in actual use, common test fixtures are often used to test optical cables of different lengths in order to improve the accuracy and diversity of test results. The clamping parts of commonly used fixtures are usually fixed in a designated position with bolts, which makes it difficult to adjust flexibly according to the length of the optical cable. Sometimes, it is necessary to open new mounting holes, which is quite inconvenient in actual operation.
[0004] Therefore, it is necessary to provide a new optical cable compressive strength testing fixture to solve the above-mentioned technical problems. Utility Model Content
[0005] The purpose of this invention is to provide a highly flexible optical cable compressive strength testing fixture that can adjust the position of the fixture according to the length of the optical cable to be tested.
[0006] To solve the above-mentioned technical problems, the optical cable compressive strength testing fixture provided by this utility model includes: a clamping platform, an open frame fixedly installed at the bottom of the clamping platform, a bidirectional screw rotatably installed inside the open frame, two movable columns threaded on the bidirectional screw, the tops of the two movable columns extending above the clamping platform and slidably connected to the top of the clamping platform, a clamping seat fixedly installed on the top of the two movable columns, a V-shaped clamping opening on the two clamping seats, a first side protrusion plate fixedly installed on the side of the two clamping seats that are far apart from each other, a first connecting folding plate and a second connecting folding plate slidably installed on the two first side protrusion plates respectively, a clamping cone fixedly installed on the first connecting folding plate and the second connecting folding plate respectively, and the two clamping cones respectively adapting to the two V-shaped clamping openings.
[0007] Preferably, both the first and second connecting folding plates are provided with clearance through openings, and the bottom of the open frame is fixedly installed with two fixed legs, which pass through the two clearance through openings respectively and do not contact the inner wall of the clearance through openings.
[0008] Preferably, one end of the bidirectional screw passes through the clearance through-hole on the first connecting folding plate and contacts the inner wall of the clearance through-hole. A rotating wheel is fixedly installed at the end of the bidirectional screw that passes through the clearance through-hole. Multiple positioning countersunk holes are opened on the outer ring wall of the rotating wheel. A second side convex plate is fixedly installed on the side of the clamping platform near the first connecting folding plate. The second side convex plate passes through the corresponding clearance through-hole and does not contact the inner wall of the clearance through-hole. A tension rod is slidably installed on the second side convex plate, and the bottom end of the tension rod extends into the corresponding positioning countersunk hole.
[0009] Preferably, a lifting plate is fixedly installed at the top of the stretching rod, and a compression spring is sleeved on the stretching rod. The top of the compression spring is fixedly connected to the lifting plate, and the bottom is fixedly connected to the second side protrusion plate.
[0010] Preferably, a hollow cylinder is fixedly installed at the bottom of the first connecting folding plate, and a connecting slide rod is fixedly installed at the bottom of the second connecting folding plate. One end of the connecting slide rod extends into the hollow cylinder and is slidably connected to one side of the hollow cylinder.
[0011] Preferably, a cylinder is fixedly installed at the bottom of the open frame, and a connecting rod is fixedly installed on the output shaft of the cylinder. The connecting rod passes through the first connecting plate and the second connecting plate, and the connecting rod is slidably connected to the first connecting plate and the second connecting plate.
[0012] Preferably, the top of the clamping platform has two horizontal guide openings, the two movable columns pass through the two horizontal guide openings respectively, and the two movable columns are in contact with the inner walls of the two horizontal guide openings respectively. Anti-slip stripes are provided in the two V-shaped clamps.
[0013] Compared with related technologies, the optical cable compressive strength testing fixture provided by this utility model has the following advantages:
[0014] This utility model provides a test fixture for the compressive strength of optical cables. Through the cooperation between the bidirectional screw and the moving column, the distance between the two clamps can be adjusted according to the length of the optical cable to be tested. Furthermore, by utilizing the sliding connection between the first side convex plate and the first and second connecting folding plates, as well as the sliding cooperation between the hollow cylinder and the connecting slide rod, the clamping cone can move along with the movement of the clamps. The linkage process is smooth and complete. At the same time, with the cooperation of the connecting rod, the first and second connecting folding plates can be lowered simultaneously, thereby enabling synchronous compression of both ends of the optical cable, ensuring uniform compression force, and guaranteeing the accuracy of subsequent test results. Attached Figure Description
[0015] Figure 1 A schematic diagram of a preferred embodiment of the optical cable compressive strength testing fixture provided by this utility model;
[0016] Figure 2 This is a schematic diagram of the connection structure between the clamp and the first side protrusion plate in this utility model;
[0017] Figure 3 This is an assembly diagram of the first connecting folding plate and the second connecting folding plate in this utility model;
[0018] Figure 4 This is a cross-sectional view showing the connection between the hollow cylinder and the connecting slide rod in this utility model.
[0019] Figure 5 This is a schematic diagram of the connection structure between the second side convex plate and the tension rod in this utility model.
[0020] The following are labeled in the diagram: 1. Fixed support leg; 2. Open frame; 3. Clamping platform; 4. Two-way screw; 5. Moving column; 6. Clamp seat; 7. V-shaped clamp; 8. First side convex plate; 9. First connecting folding plate; 10. Second connecting folding plate; 11. Clamping cone; 12. Clearance through-hole; 13. Hollow cylinder; 14. Connecting slide rod; 15. Cylinder; 16. Connecting pull rod; 17. Rotary wheel; 18. Positioning countersunk hole; 19. Second side convex plate; 20. Tensioning rod; 21. Lifting plate; 22. Compression spring. Detailed Implementation
[0021] 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.
[0022] Please refer to the following: Figures 1-5 ,in, Figure 1 A schematic diagram of a preferred embodiment of the optical cable compressive strength testing fixture provided by this utility model; Figure 2 This is a schematic diagram of the connection structure between the clamp and the first side protrusion plate in this utility model; Figure 3 This is an assembly diagram of the first connecting folding plate and the second connecting folding plate in this utility model; Figure 4 This is a cross-sectional view showing the connection between the hollow cylinder and the connecting slide rod in this utility model. Figure 5This is a schematic diagram of the connection structure between the second side convex plate and the tensile rod in this utility model. The optical cable compressive strength testing fixture includes: a clamping platform 3, an open frame 2 fixedly installed at the bottom of the clamping platform 3, and a bidirectional screw 4 rotatably installed inside the open frame 2. Two movable columns 5 are threadedly installed on the bidirectional screw 4. The tops of the two movable columns 5 extend above the clamping platform 3 and are slidably connected to the top of the clamping platform 3. This sliding connection means that the movable columns 5 can slide horizontally on the clamping platform 3. In order to enable the movable columns 5 to slide linearly horizontally, two horizontal guide holes are opened at the top of the clamping platform 3. The two movable columns 5 pass through the two horizontal guide holes respectively, and the two movable columns 5 contact the inner walls of the two horizontal guide holes respectively. Two movable columns 5 are fixedly installed at the top of the two movable columns 5. There are two clamps 6, each with a V-shaped clamping opening 7. The shape of the V-shaped clamping opening 7 is designed to be suitable for testing optical cables of different diameters, with a wide range of applications. Anti-slip stripes are provided in both V-shaped clamping openings 7 to improve the clamping tightness of the optical cable and prevent it from falling off. A first side convex plate 8 is fixedly installed on the side of the two clamps 6 that is far apart from each other. A first connecting folding plate 9 and a second connecting folding plate 10 are slidably installed on the two first side convex plates 8, and a clamping cone 11 is fixedly installed on both the first connecting folding plate 9 and the second connecting folding plate 10. The two clamping cones 11 are adapted to the two V-shaped clamping openings 7 respectively. By pressing the clamping cones 11 into the V-shaped clamping openings 7, a fit can be formed to clamp the optical cable.
[0023] In the above method, in order to ensure that the first connecting folding plate 9 and the second connecting folding plate 10 do not interfere with the clamping platform 3 and the open frame 2 during horizontal movement, both the first connecting folding plate 9 and the second connecting folding plate 10 are provided with clearance through openings 12. The bottom of the open frame 2 is fixedly installed with two fixed legs 1, which pass through the two clearance through openings 12 respectively and do not contact the inner wall of the clearance through openings 12. The diameter of the clearance through opening 12 is larger than the longitudinal width of the clamping platform 3 and the open frame 2, so that the clamping platform 3 and the open frame 2 can pass smoothly through the clearance through opening 12 during movement.
[0024] In this method, in order to fix the two clamps 6 with the adjusted spacing in the designated position and prevent the bidirectional screw 4 from rotating, one end of the bidirectional screw 4 passes through the clearance through-hole 12 on the first connecting folding plate 9 and contacts the inner wall of the clearance through-hole 12. A rotating wheel 17 is fixedly installed at the end of the bidirectional screw 4 that passes through the clearance through-hole 12, and multiple positioning countersunk holes 18 are opened on its outer ring wall. A second side protrusion 19 is fixedly installed on the side of the clamping platform 3 near the first connecting folding plate 9. The second side protrusion 19 passes through the clearance through-hole 12. The corresponding avoidance through-hole 12 is not in contact with the inner wall of the avoidance through-hole 12. A tension rod 20 is slidably installed on the second side protrusion 19. The bottom end of the tension rod 20 extends into the corresponding positioning countersunk hole 18, and the two form a snap-fit effect. In order to make the tension rod 20 tightly inserted into the positioning countersunk hole 18, a lifting plate 21 is fixedly installed on the top end of the tension rod 20. A compression spring 22 is sleeved on the tension rod 20. The top end of the compression spring 22 is fixedly connected to the lifting plate 21, and the bottom end is fixedly connected to the second side protrusion 19.
[0025] In this method, to enable the first connecting folding plate 9 and the second connecting folding plate 10 to have linkage performance, a hollow cylinder 13 is fixedly installed at the bottom of the first connecting folding plate 9, and a connecting slide rod 14 is fixedly installed at the bottom of the second connecting folding plate 10. One end of the connecting slide rod 14 extends into the hollow cylinder 13 and is slidably connected to one side of the hollow cylinder 13. Furthermore, in order to drive the first connecting folding plate 9 and the second connecting folding plate 10 to rise and fall simultaneously, a cylinder 15 is fixedly installed at the bottom of the open frame 2, and a connecting rod 16 is fixedly installed on its output shaft. The connecting rod 16 passes through the first connecting folding plate 9 and the second connecting folding plate 10, and the connecting rod 16 is slidably connected to the first connecting folding plate 9 and the second connecting folding plate 10.
[0026] The working principle of the optical cable compressive strength testing fixture provided by this utility model is as follows:
[0027] When it is necessary to clamp the optical cable, first adjust the distance between the two clamps 6 according to the length of the optical cable. When adjusting, first lift the lifting plate 21 to bring the tension rod 20 out from the corresponding positioning countersunk hole 18. At this time, the compression spring 22 is pulled upward and is in a stretched state. Then rotate the wheel 17. As the wheel 17 rotates, through the threaded engagement between the bidirectional screw 4 and the moving column 5, the two moving columns 5 move towards each other. At this time, the distance between the two clamps 6 begins to change. During the movement of the moving column 5, it is restricted by the first side convex plate 8. The first connecting folding plate 9 and the second connecting folding plate 10 will also move towards each other until the distance between the two clamps 6 meets the expected requirements. Then, the wheel 17 can be rotated slightly to adjust it so that the nearest positioning countersunk hole 18 faces upward and corresponds vertically with the tension rod 20. Then, the lifting plate 21 is released, the stretched compression spring 22 is pulled back, and the tension rod 20 is automatically brought into the corresponding positioning countersunk hole 18.
[0028] Then, the optical cable is placed into the two V-shaped clamps 7, with both ends of the optical cable slightly protruding from the outer ends of the two clamps 6. Then, the output shaft of the cylinder 15 is extended, and the connecting rod 16 descends with the first connecting plate 9 and the second connecting plate 10, thereby bringing down the two clamping cones 11. When the clamping cones 11 are released from the optical cable, they will exert a squeezing force on the optical cable, thus completing the clamping work. After that, relevant tests can be performed.
[0029] Compared with related technologies, the optical cable compressive strength testing fixture provided by this utility model has the following advantages:
[0030] This utility model provides a test fixture for the compressive strength of optical cables. Through the cooperation between the bidirectional screw 4 and the moving column 5, the distance between the two clamps 6 can be adjusted according to the length of the optical cable to be tested. Furthermore, by utilizing the sliding connection between the first side convex plate 8 and the first connecting folding plate 9 and the second connecting folding plate 10, as well as the sliding cooperation between the hollow cylinder 13 and the connecting slide rod 14, the clamping cone 11 can move along with the clamp 6. The linkage process is smooth and complete. At the same time, with the cooperation of the connecting rod 16, the first connecting folding plate 9 and the second connecting folding plate 10 can be lowered simultaneously, thereby enabling synchronous compression of both ends of the optical cable, ensuring uniform compression force, and guaranteeing the accuracy of subsequent test results.
Claims
1. A clamping fixture for testing the compressive strength of optical cables, comprising a clamping platform, characterized in that, An open frame is fixedly installed at the bottom of the clamping platform. A bidirectional screw is rotatably installed inside the open frame. Two movable columns are threaded onto the bidirectional screw. The tops of the two movable columns extend above the clamping platform and are slidably connected to the top of the clamping platform. A clamping seat is fixedly installed on the top of each of the two movable columns. A V-shaped clamping opening is opened on each of the two clamping seats. A first side protrusion is fixedly installed on the side of each of the two clamping seats that is far apart from each other. A first connecting folding plate and a second connecting folding plate are slidably installed on the two first side protrusions respectively. A clamping cone is fixedly installed on each of the first connecting folding plates and the second connecting folding plate. The two clamping cones are respectively adapted to the two V-shaped clamping openings.
2. The optical cable compressive strength testing fixture according to claim 1, characterized in that, Both the first and second connecting folding plates have clearance through openings. The bottom of the open frame is fixedly installed with two fixed legs, which pass through the two clearance through openings respectively and do not contact the inner wall of the clearance through openings.
3. The optical cable compressive strength testing fixture according to claim 2, characterized in that, One end of the bidirectional screw passes through the clearance through-hole on the first connecting plate and contacts the inner wall of the clearance through-hole. A rotating wheel is fixedly installed on the end of the bidirectional screw that passes through the clearance through-hole. Multiple positioning countersunk holes are opened on the outer ring wall of the rotating wheel. A second side convex plate is fixedly installed on the side of the clamping platform near the first connecting plate. The second side convex plate passes through the corresponding clearance through-hole and does not contact the inner wall of the clearance through-hole. A tension rod is slidably installed on the second side convex plate. The bottom end of the tension rod extends into the corresponding positioning countersunk hole.
4. The optical cable compressive strength testing fixture according to claim 3, characterized in that, A lifting plate is fixedly installed at the top of the stretching rod, and a compression spring is sleeved on the stretching rod. The top of the compression spring is fixedly connected to the lifting plate, and the bottom is fixedly connected to the second side protrusion plate.
5. The optical cable compressive strength testing fixture according to claim 1, characterized in that, A hollow cylinder is fixedly installed at the bottom of the first connecting folding plate, and a connecting slide rod is fixedly installed at the bottom of the second connecting folding plate. One end of the connecting slide rod extends into the hollow cylinder and is slidably connected to one side of the hollow cylinder.
6. The optical cable compressive strength testing fixture according to claim 1, characterized in that, A cylinder is fixedly installed at the bottom of the open frame, and a connecting rod is fixedly installed on the output shaft of the cylinder. The connecting rod passes through the first connecting plate and the second connecting plate, and the connecting rod is slidably connected to the first connecting plate and the second connecting plate.
7. The optical cable compressive strength testing fixture according to claim 1, characterized in that, The clamping platform has two horizontal guide openings at the top, and the two moving columns pass through the two horizontal guide openings respectively. The two moving columns are in contact with the inner walls of the two horizontal guide openings respectively, and anti-slip stripes are provided in the two V-shaped clamps.