Extensometer for measuring elongation of optical cable
By designing an optical cable elongation measurement extensometer including a gauge rod and a rebound displacement sensor, the problem of inconsistent gauge distance in the prior art is solved, and the measurement efficiency and versatility of the fixture are improved.
Patent Information
- Application Number
- CN202420460667.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-11
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-03-11
AI Technical Summary
When used, the existing extensometer for optical cable extension measurement has different gauge distances at the two ends of the clamp clamping sample during each measurement, which leads to inconvenience in repeated measurement and calculation.
An optical cable extension measuring extensometer including long strip base plates, linear guides, sliders, gauge rods, rebound displacement sensors and press blocks was designed to determine the consistent gauge distance through the gear bars and use press blocks. The clamping grooves and transverse grooves are adapted to samples of different shapes, and combined with a rebound displacement sensor to measure the elongation of the optical cable.
It realizes the rapid determination of consistent gauge distances when repeated multiple sets of measurements, improves measurement efficiency and improves the versatility of the fixtures, and is suitable for clamping of circular and flat specimens.
Smart Images
Figure CN222353138U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cable measurement experiments, in particular to an extensometer for measuring the elongation of an optical cable. Background Art
[0002] Optical cables are manufactured to meet optical, mechanical or environmental performance specifications. They are communication cable components that use one or more optical fibers placed in a sheath as transmission media and can be used individually or in groups. Optical cables are mainly composed of optical fibers, plastic protective sleeves and plastic sheaths. At present, optical cables have been widely used in many fields. The elongation (or elongation) of optical cables is an important parameter for measuring the tensile properties of optical cables. At present, the existing extensometers used to measure the elongation of optical cables are used to clamp the two ends of the sample optical cable for each measurement, resulting in differences in the gauge length of each measurement, which is not convenient for repeated measurement and calculation. Utility Model Content
[0003] The utility model aims to provide an extensometer for measuring the elongation of an optical cable, so as to solve the problems raised in the above-mentioned background technology.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an extensometer for measuring the elongation of an optical cable, comprising a long strip-shaped bottom plate, a linear guide rail along the length direction is fixedly installed on the upper side of the bottom plate, two sliders a are arranged on the linear guide rail, a vertical clamping plate a is fixedly installed on the upper side of one of the sliders a, and a baffle is fixedly installed on the upper side of the other slider a, a slider b is arranged on the linear guide rail, the slider b is located between the two sliders a, a vertical clamping plate b is fixedly installed on the slider b, the clamping plates a and b are provided with transversely penetrating through holes, a penetrating gauge rod is inserted between the two through holes, a length scale is arranged on the outer side of the gauge rod along the axial direction, and one end of the gauge rod is against the side of the baffle;
[0005] A rebound-type displacement sensor is horizontally installed on the side of the clamping plate b, and the sides of the clamping plate a and the baffle are provided with horizontally extending clamping arms. A pressure block is provided on the upper side of the clamping arm. The pressure block is in the shape of a rectangular strip and has rectangular grooves open on three sides at both ends. A connecting screw is hinged in the rectangular groove. A slot penetrating from top to bottom is provided on one side of the clamping arm. After the connecting screw is inserted into the slot, a butterfly nut is screwed on the lower end to apply downward pulling force to the pressure block.
[0006] Preferably, a notch is provided on the upper portion of the clamping plate a and extends radially downward to the positioning hole, and two sides of the notch are connected by bolts.
[0007] Preferably, one side of the upper and lower sides of the pressing block is provided with an arc-shaped clip groove and the other side is provided with a transverse groove.
[0008] Compared with the prior art, the beneficial effects of the utility model are as follows: when the extensometer repeats multiple groups of measurements, a consistent gauge length can be quickly determined through the gauge rod, which greatly improves the measurement efficiency; clamping grooves and transverse grooves are arranged on the upper and lower opposite sides of the pressure block, which can be used for clamping round and flat specimens and has good versatility. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 This is a schematic diagram of the main structure of the utility model;
[0010] Figure 2 It is a schematic diagram of the top view structure of the utility model;
[0011] Figure 3 It is a side view structural schematic diagram of the utility model;
[0012] Figure 4 This is a schematic diagram of the installation structure of the pressing block of the utility model.
[0013] In the figure: 1, base plate; 2, linear guide; 3, slider a; 4, gauge rod; 5, slider b; 6, displacement sensor; 7, clamp a; 8, pressure block; 9, connecting screw; 10, butterfly nut; 11, slot; 12, clamp b; 13, baffle. DETAILED DESCRIPTION
[0014] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0015] See also Figure 1-4 The utility model provides a technical solution: an extensometer for measuring the elongation of an optical cable, comprising a long strip-shaped base plate 1, a linear guide rail 2 along the length direction is fixedly installed on the upper side of the base plate 1, and two sliders a3 are arranged on the linear guide rail 2, a vertical clamping plate a7 is fixedly installed on the upper side of one of the sliders a3, and a baffle 13 is fixedly installed on the upper side of the other slider a3.
[0016] The linear guide 2 is provided with a slider b5, and the sliders a3 and b5 can be fixed to the linear guide 2 by fastening bolts. The slider b5 is located between the two sliders a3, and a vertical clamp b12 is fixedly installed on the slider b5. The clamps a7 and b12 are provided with horizontal through holes, and a through gauge rod 4 is inserted between the two through holes. The outer side of the gauge rod 4 is provided with a length scale along the axial direction, and one end of the gauge rod 4 is against the side of the baffle 13. The gauge length of the sample measured each time is the distance from the clamp a7 to the baffle 13, which can be displayed and read through the gauge rod 4. The upper part of the clamp a7 is provided with a notch extending radially downward to the positioning hole, and the two sides of the notch are connected by bolts. A rebound displacement sensor 6 is horizontally installed on the side of the clamp b12, and the displacement sensor 6 is provided with an elastically retractable contact.
[0017] The clamping plate a7 and the baffle 13 are both provided with horizontally extending clamping arms on the sides, and a pressure block 8 is provided on the upper side of the clamping arm. The pressure block 8 is in the shape of a rectangular strip and has rectangular grooves with three sides open at both ends. A connecting screw 9 is hinged in the rectangular groove. A clamping groove 11 is provided on one side of the clamping arm and runs through the upper and lower sides. After the connecting screw 9 is inserted into the clamping groove 11, a butterfly nut 10 is screwed on the lower end to apply a downward pulling force to the pressure block 8. On the upper and lower sides of the pressure block 8, one side is provided with an arc-shaped clamping groove and the other side is provided with a transverse groove. The arc-shaped clamping groove is suitable for clamping a circular cross-section specimen, and the side with the transverse groove is suitable for clamping a flat specimen, thereby improving the versatility and convenience of the clamp.
[0018] Working principle: When in use, the gauge rod 4 is pressed against the side of the baffle 13, and the preloaded sample is clamped on the two sliders a3 respectively (the dotted line in the attached figure indicates the sample to be tested). The distance between the clamp a7 and the baffle 13 is the gauge length of the sample, which can be displayed and read on the gauge rod 4. Since the gauge rod 4 limits the distance between the two sliders a3, when multiple groups of tests are repeated, the gauge length can be guaranteed to be the same each time. Before stretching, the contact of the displacement sensor 6 is pressed against the baffle 13, and the slider b5 is moved to retract the contact to the zero position, and then the position of the slider b5 is locked. When loading and stretching, the displacement sensor 6 measures the displacement of the baffle 13 along with the optical cable, and the displacement is the elongation of the optical cable.
[0019] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An extensometer for measuring the elongation of an optical cable, comprising a long strip-shaped bottom plate (1), characterized in that: A linear guide rail (2) along the length direction is fixedly installed on the upper side of the base plate (1), and two sliders a (3) are arranged on the linear guide rail (2), and a vertical clamping plate a (7) is fixedly installed on the upper side of one of the sliders a (3), and a baffle (13) is fixedly installed on the upper side of the other slider a (3). A slider b (5) is arranged on the linear guide rail (2), and the slider b (5) is located between the two sliders a (3). A vertical clamping plate b (12) is fixedly installed on the slider b (5), and the clamping plates a (7) and b (12) are provided with transversely penetrating through holes, and a penetrating gauge rod (4) is inserted between the two through holes, and a length scale is arranged on the outer side of the gauge rod (4) along the axial direction, and one end of the gauge rod (4) is against the side of the baffle (13); A rebound-type displacement sensor (6) is horizontally installed on the side of the clamping plate b (12), and the sides of the clamping plate a (7) and the baffle (13) are both provided with horizontally extending clamping arms. A pressure block (8) is provided on the upper side of the clamping arm. The pressure block (8) is in the shape of a rectangular strip and has rectangular grooves open on three sides at both ends. A connecting screw (9) is hinged in the rectangular groove. A slot (11) penetrating from top to bottom is provided on one side of the clamping arm. After the connecting screw (9) is inserted into the slot (11), a butterfly nut (10) is screwed on the lower end to apply a downward pulling force to the pressure block (8).
2. The extensometer for measuring the elongation of an optical cable according to claim 1, characterized in that: The upper part of the clamping plate a (7) is provided with a notch extending radially downward to the positioning hole, and the two sides of the notch are connected by bolts.
3. The extensometer for measuring the elongation of an optical cable according to claim 1, characterized in that: The upper and lower surfaces of the pressing block (8) are provided with an arc-shaped clamping groove on one side and a transverse groove on the other side.