An S-shaped bending test machine for optical cables under tension
By designing an S-shaped bending test machine for optical cable under tension, and using a servo motor to drive the optical cable to bend repeatedly on rollers, the problem of lacking testing equipment for the optical cable laying process in the existing technology has been solved, and the effective testing of optical cable performance has been realized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI UNIVER TECH CO LTD
- Filing Date
- 2025-08-06
- Publication Date
- 2026-07-03
AI Technical Summary
The existing technology lacks equipment for verifying the tensile and bending forces on optical cables during the laying process, and cannot effectively detect the optical characteristics and sheath integrity of optical cables.
An S-shaped bending test machine for optical cable under tension was designed, including a frame, steel wire rope, weight hanger, linear guide rail, rollers, servo motor and cable clamp. The optical cable is driven by the servo motor to bend repeatedly on the rollers. The roller spacing is adjusted to simulate actual laying conditions and test the performance of the optical cable.
It enables bending tests on optical cables under tension conditions, allows adjustment of the bending angle, and facilitates the testing of optical cable optical properties and sheath integrity, meeting the testing requirements of GB/T7424.2-2008 standard.
Smart Images
Figure CN224456445U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of optical cable testing technology, specifically to an S-shaped bending test machine for optical cables under tension. Background Technology
[0002] Due to improper operations or limitations imposed by the actual laying environment during fiber optic cable installation, cables used in ducts or overhead installations are subjected to both horizontal tensile force and bending force simultaneously as they pass through pulleys. To verify that the optical characteristics and sheath integrity of the cable can be maintained after such a laying process, method E18 of the test standard GB / T7424.2-2008 is used for testing. However, the corresponding testing equipment is unavailable in actual production. Utility Model Content
[0003] The purpose of this invention is to provide an S-shaped bending test machine for optical cables under tension, so as to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: an S-shaped bending test machine for optical cables under tension, comprising a frame, a steel wire rope, and a weight hanger. One end of the steel wire rope is connected to the weight hanger, and the other end of the steel wire rope is connected to a connector. Two parallel linear guide rails a are longitudinally mounted on the middle of the upper surface of the frame. A mounting seat is slidably connected to the linear guide rail a, and a rotatable roller is mounted on the mounting seat. The outer side of the roller is provided with an annular groove for clamping the optical cable. A longitudinally penetrating lead screw a is screwed to the mounting seat. A handwheel is fixedly connected to the end of the lead screw a, and the lead screw a is installed with the frame through a bearing seat. A linear slide rail b is fixedly mounted on the upper surface of the frame along the length direction. A slider seat is slidably connected to the linear slide rail b. A servo motor is mounted on the frame at the end of the linear slide rail b. The output end of the servo motor is connected to the lead screw b. The lead screw b passes laterally through the slider seat and is screwed to it. A cable clamp is fixedly mounted on the slider seat.
[0005] Preferably, a right-angled trapezoidal frame is fixedly installed at one end of the frame opposite to the servo motor. Support shaft assemblies are respectively installed at the two non-right-angled inflection points on the upper part of the right-angled trapezoidal frame. The support shaft assembly consists of two shafts that are separated vertically, and a steel wire rope passes through the gap in the support shaft assembly.
[0006] Preferably, a U-shaped limiter is installed on the support shaft assembly. The limiter can slide along the support shaft assembly to adjust its position and is fixed by bolts. The limiter is used to constrain the position of the wire rope on the support shaft assembly.
[0007] Compared with the prior art, the advantages of this utility model are: this utility model is used for bending tests of cables under tension conditions, and the distance between the two rollers is adjustable, thereby enabling free adjustment of the bending angle of the optical cable and making it convenient to use. Attached Figure Description
[0008] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0009] Figure 2 This is a top view of the structure of this utility model;
[0010] Figure 3 This is a schematic diagram of the left-side structure of this utility model.
[0011] In the diagram: 1. Frame; 2. Linear guide rail a; 3. Roller; 4. Lead screw a; 5. Linear slide rail b; 6. Servo motor; 7. Slider seat; 8. Right-angle trapezoidal frame; 9. Wire rope; 10. Weight hanger; 11. Support shaft assembly; 12. Connector. Detailed Implementation
[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0013] Please see Figure 1-3 This utility model provides a technical solution: an S-shaped bending test machine for optical cables under tension, including a frame 1, a steel wire rope 9, and a weight hanger 10. One end of the steel wire rope 9 is connected to the weight hanger 10, which can hang different numbers of weights to adjust the counterweight. The other end of the steel wire rope 9 is connected to a connector 12, which is used to connect to the end of the optical cable to be tested. Two parallel linear guide rails a2 are longitudinally mounted in the middle of the upper surface of the frame 1. A mounting seat is slidably connected to the linear guide rails a2, and a rotatable roller 3 is mounted on the mounting seat. The outer side of the roller 3 is provided with an annular groove for clamping the optical cable. The optical cable to be tested passes around the two rollers 3 in an S-shape.
[0014] A longitudinally penetrating lead screw a4 is screwed onto the mounting base. A handwheel is fixedly connected to the end of lead screw a4, and lead screw a4 is mounted to the frame 1 via a bearing seat. The positions of the two rollers 3 and the distance between them can be adjusted by rotating lead screw a4. A linear slide rail b5 is fixedly mounted along the length of the upper surface of the frame 1. A slider seat 7 is slidably connected to the linear slide rail b5. A servo motor 6 is mounted at the end of the linear slide rail b5 on the frame 1. The output end of the servo motor 6 is connected to lead screw b. Lead screw b passes laterally through the slider seat 7 and is screwed to it. A cable clamp is fixedly mounted on the slider seat 7. The cable clamp is used to fix the other end of the optical cable under test.
[0015] A right-angled trapezoidal frame 8 is fixedly mounted on the end of the frame 1 opposite to the servo motor 6. Support shaft assemblies 11 are mounted at the two non-right-angled inflection points on the upper part of the right-angled trapezoidal frame 8. Each support shaft assembly 11 consists of two shafts that are separated vertically. A steel wire rope 9 passes through the gap in the support shaft assembly 11. A U-shaped limiter is mounted on the support shaft assembly 11. The limiter can slide along the support shaft assembly 11 to adjust its position and is locked in place by bolts. The limiter is used to constrain the position of the steel wire rope 9 on the support shaft assembly 11.
[0016] Working principle: Press when using Figure 2 The optical cable to be tested is arranged in an S-shape and passed around two rollers 3. One end of the cable is fixed by a wire clamp on the slider seat 7, and the other end is connected to the connector 12. The slider seat 7 is driven by the servo motor 6 to move laterally back and forth, and the weight hanger 10 and the weight are pulled up and down repeatedly, causing the optical cable to be bent repeatedly at the rollers 3. Rotating the lead screw a4 can adjust the distance between the two rollers 3, thereby adjusting the bending angle.
[0017] 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. An S-shaped bending test machine for optical cable under tension, comprising a frame (1), a steel wire rope (9), and a weight hanger (10), wherein one end of the steel wire rope (9) is connected to the weight hanger (10), and the other end of the steel wire rope (9) is connected to a connector (12), characterized in that: Two parallel linear guide rails a (2) are longitudinally mounted on the middle of the upper surface of the frame (1). A mounting seat is slidably connected to the linear guide rail a (2). A rotatable roller (3) is mounted on the mounting seat. The outer side of the roller (3) is provided with an annular groove for clamping optical cables. A longitudinally penetrating lead screw a (4) is screwed to the mounting seat. A handwheel is fixedly connected to the end of the lead screw a (4), and the lead screw a (4) is installed with the frame (1) through a bearing seat. A linear slide rail b (5) is fixedly mounted on the upper surface of the frame (1) along the length direction. A slider seat (7) is slidably connected to the linear slide rail b (5). A servo motor (6) is installed at the end of the linear slide rail b (5) of the frame (1). The output end of the servo motor (6) is connected to the lead screw b. The lead screw b passes through the slider seat (7) laterally and is screwed to it. A cable clamp is fixedly mounted on the slider seat (7).
2. An optical cable S-bend under tension tester according to claim 1, characterized in that: The frame (1) has a right-angled trapezoidal frame (8) fixedly installed at one end opposite to the servo motor (6). Support shaft groups (11) are installed at the two non-right-angled inflection points on the upper part of the right-angled trapezoidal frame (8). The support shaft group (11) consists of two shafts that are separated from each other. The wire rope (9) passes through the gap in the support shaft group (11).
3. An optical cable S-bend under tension test machine according to claim 2, characterized in that: A U-shaped limiter is installed on the support shaft assembly (11). The limiter can slide along the support shaft assembly (11) to adjust its position and be locked in place by bolts. The limiter is used to constrain the position of the wire rope (9) on the support shaft assembly (11).