CN211652340U - Tensile test structure based on evaluation of stripping performance of optical cable sheath - Google Patents
Tensile test structure based on evaluation of stripping performance of optical cable sheath Download PDFInfo
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- CN211652340U CN211652340U CN201921715470.0U CN201921715470U CN211652340U CN 211652340 U CN211652340 U CN 211652340U CN 201921715470 U CN201921715470 U CN 201921715470U CN 211652340 U CN211652340 U CN 211652340U
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Abstract
The utility model relates to a tensile test structure based on optical cable sheath is opened and is shelled performance evaluation, including the optical cable sample, the optical cable sample comprises core cable core and outside sheath, the length of optical cable sample is L, and its one end is the stiff end, and the other end is the expansion end, at the distance the long position department of stiff end d sets up the fracture, and the sheath of fracture both sides separates completely, and the stiff end sets up first anchor clamps, first anchor clamps press from both sides tight cable core and sheath simultaneously, the expansion end sets up the second anchor clamps, the tight sheath of second anchor clamps clamp. The utility model discloses a test structure can enough carry out reliable clamp to the stiff end of optical cable sample through anchor clamps and tightly ensure that cable core and sheath do not peel off, can only press from both sides tightly the sheath at the optical cable sample expansion end again, on tensile testing machine, make the sheath of stiff end peel off from the cable core, record the tensile test curve through peeling off the in-process to the biggest load value that obtains comes to split and shells the performance evaluation.
Description
Technical Field
The utility model relates to an among the communication optical cable field test of stripping performance, concretely relates to cable sheath open tensile test structure of stripping performance evaluation.
Background
In the construction process of the communication optical cable, the construction efficiency of the optical cable is directly influenced by the stripping performance of the optical cable. During actual production and use, optical cable manufacturers often receive quality objections from internal and external users about the stripping performance of optical cables. However, there is no determination method for testing the performance in the issued standard documents of industry standards, national standards and the like, and the whole industry lacks uniform test specifications, but the stripping performance of the optical cable sheath has become an important test performance according to the current industry development trend, and for optical cable production enterprises, the testing of the stripping performance before the product leaves the factory gradually becomes one of necessary test items, so that it is necessary to develop a standard method for testing the stripping performance of the sheath for representing the stripping performance, thereby facilitating the evaluation of the stripping performance of the product.
Application No. 201910060221.0's patent application discloses an easily lay easy-to-open stress sensing optical cable, and application No. 201821602342.0's patent discloses an easily-open full-dry optical cable, and application No. 201721783096.9's patent discloses a flat easy-to-open tight set optical cable of peeling, and application No. 201920104537.0's patent discloses an easily lay easy-to-open stress sensing optical cable. The aforementioned patents all relate to easy-peeling property of the optical cable, but none of them give quantification or expression to the easy-peeling property, and thus the easy-peeling property cannot be evaluated accurately.
The tension tester is used for mechanical stress application for mechanical property tests of static load, tension, compression, bending, shearing, tearing, peeling and the like of instruments and equipment aiming at various materials, and is suitable for plastic plates, pipes, profiled bars, plastic films, rubber,Electric wire and cableThe test of various physical and mechanical properties of materials such as steel, glass fiber and the like is material development and is indispensable detection equipment for physical property test, teaching research, quality control and the like.
The clamp acting on the sample needs to be designed according to different materials and samples in different shapes, and the quality of the design of the clamp is also an important factor for the smooth performance of the test and the high accuracy of the test result.
SUMMERY OF THE UTILITY MODEL
The utility model aims at adopting tensile test's mode to open when shelling the performance evaluation to the optical cable sheath, design a section and open the test structure of shelling to the optical cable for supplementary tensile test's reliable going on improves the accuracy that detects.
The utility model provides a technical scheme that above-mentioned problem adopted does: the utility model provides a tensile test structure based on evaluation of optical cable sheath stripping performance which characterized in that: including the optical cable sample, the optical cable sample comprises core cable core and outside sheath, the length of optical cable sample is L, and its one end is the stiff end, and the other end is the expansion end, is the distance the long position department of stiff end d sets up the fracture, and the sheath of fracture both sides separates completely, the stiff end sets up first anchor clamps, first anchor clamps press from both sides tight cable core and sheath simultaneously, the expansion end sets up the second anchor clamps, the tight sheath of second anchor clamps clamp.
Preferably, the first clamp and the second clamp are identical in structure and respectively comprise two oppositely-arranged clamping plates and a connector, the two clamping plates are arranged on two sides of the optical cable sample in an opposite mode, the two clamping plates are respectively and symmetrically provided with locking holes, the two clamping plates are locked in an involutory mode through matching with the connector to clamp the optical cable sample from two sides, and the two clamping plates can be simultaneously detachably fixed on the connector. Meanwhile, the deformation depth can be changed by adjusting the relative distance between the two clamping plates, and the sheath can be independently fixed or the sheath and the cable core can be simultaneously fixed.
Preferably, the clamp and the connecting head are detachably connected through a matching structure of a T-shaped block and a T-shaped groove.
Optionally, a hole is formed in the connector, and the connector is mounted on the tensile testing machine through the hole.
Alternatively, the opposing faces of the two clamping plates are smooth flat or have a toothed structure so as to firmly clamp the optical cable. The clamping plate is in surface contact with the sheath, the friction force is large, the stress of the optical cable sample is uniform, and the fixation is reliable.
Optionally, there are four locking holes on any of the clamping plates, and the four locking holes are distributed in four corners.
Compared with the prior art, the utility model has the advantages of: the utility model discloses a test structure can enough carry out reliable clamp to the stiff end of optical cable sample through anchor clamps and tightly ensure that cable core and sheath do not peel off, can only press from both sides tightly the sheath at the optical cable sample expansion end again, on tensile testing machine, make the sheath of stiff end peel off from the cable core, record the tensile test curve through peeling off the in-process to the biggest load value that obtains comes to split and shells the performance evaluation.
Drawings
Fig. 1 is a schematic diagram of a tensile test structure in an embodiment of the present invention;
fig. 2 is a schematic view of a splint according to an embodiment of the present invention;
FIG. 3 is a side view of the structure of FIG. 2;
fig. 4 is an end view of the connection head in the embodiment of the present invention;
fig. 5 is a cross-sectional view AA of fig. 4.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 1, the tensile test structure in this embodiment includes an optical cable sample 1, where the optical cable sample 1 includes a core and an outer sheath, the length of the optical cable sample is 50cm, an end a of the optical cable sample is a fixed end, an end B of the optical cable sample is a movable end, an annular fracture 2 is formed at a position 10cm long from the fixed end, and the sheaths on two sides of the annular fracture are completely separated. The first clamp is arranged at the fixed end, and the gap between the two clamping plates of the first clamp is half of the diameter of the optical cable sample, so that the cable core and the sheath are clamped simultaneously in a deformation mode of penetrating into the cable core. The movable end is provided with a second clamp, the second clamp is clamped inwards by 1-2 mm relative to the optical cable sample, so that deformation only occurs on the sheath without affecting the cable core, and the effect of only clamping the sheath is achieved.
The first clamp and the second clamp are identical in structure, except for a clamping gap between the fixed end and the movable end. Equally divide and respectively include two splint 3, connector 4 that set up relatively, two splint 3 mutual disposition have the deformation structure of bar tooth on the opposite face of two splint respectively, make to press from both sides tightly and the sheath meshing, especially ensure the fixed effect of expansion end splint to the sheath. The two clamping plates 3 are respectively provided with four locking holes 5, such as screw holes, which are symmetrically distributed at four corners, and the two clamping plates are closed and locked by matching with connecting pieces, such as screws, so as to clamp the optical cable sample from two sides.
In order to facilitate the mounting of the first and second clamps on the tensile testing machine, the clamping plates are provided with a connecting head 4 to which the clamping plates can be simultaneously detachably fixed. The clamp and the connector are detachably connected through a matching structure of the T-shaped block and the T-shaped groove, meanwhile, a hole 401 is formed in the connector, and the connector is installed on the tensile testing machine through the hole.
The method for testing the stripping performance of the sheath of the communication optical cable based on the tensile test comprises the following operations:
(1) length of stripping test sample: cutting a sample cable with the stripping test length of about 50 cm;
(2) optical cable sample anchor clamps: selecting a clamp to be fixed on a tensile testing machine;
(3) sample treatment: trimming and rounding the end B of the sample cable, and cutting off the outer sheath of the optical cable at the position of the end A, which is 10cm away from the end part;
(4) fixing a sample cable: the end A is fixed by the first clamp, the end A of the optical cable is guaranteed to be flattened to 50% D (D is the diameter of the measured sample optical cable), and the end A is guaranteed to be clamped and fixed. Fixing the end B by a second clamp, and continuously clamping the optical cable for 1-2 mm after the clamp contacts the surface of the optical cable;
(5) and (3) testing the stripping force: starting a tensile testing machine, and testing at a displacement speed of 50 mm/min;
(6) data reading: and when the load curve has a peak value, stopping the test after the tension is stable, and reading the maximum load value to obtain a numerical value for evaluating the stripping performance of the sample cable, wherein the maximum load value is the minimum, and the stripping performance is better.
Although the preferred embodiments of the present invention have been described in detail hereinabove, it should be clearly understood that modifications and variations of the present invention are possible to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a tensile test structure based on evaluation of optical cable sheath stripping performance which characterized in that: comprises an optical cable sample, wherein the optical cable sample consists of a core part cable core and an outer sheath, the length of the optical cable sample is L, one end of the optical cable sample is a fixed end, the other end of the optical cable sample is a movable end, a fracture is formed at a position d away from the fixed end, the sheaths at two sides of the fracture are completely separated,
the fixed end is provided with a first clamp, the first clamp simultaneously clamps the cable core and the sheath, the movable end is provided with a second clamp, and the second clamp clamps the sheath.
2. The optical cable sheath stripping performance evaluation-based tensile test structure according to claim 1, wherein: the first clamp and the second clamp are identical in structure and respectively comprise two clamping plates and a connector which are oppositely arranged, the two clamping plates are arranged on two sides of the optical cable sample in an opposite mode, locking holes are symmetrically formed in the two clamping plates respectively, the two clamping plates are locked in an involutory mode through matching with the connecting piece to clamp the optical cable sample from two sides, and the two clamping plates can be detachably fixed on the connector.
3. The optical cable sheath stripping performance evaluation-based tensile test structure according to claim 2, wherein: the clamp and the connector are detachably connected through a matching structure of the T-shaped block and the T-shaped groove.
4. The optical cable sheath stripping performance evaluation-based tensile test structure according to claim 2, wherein: the connecting head is provided with a hole, and the connecting head is installed on the tensile testing machine by utilizing the hole.
5. The optical cable sheath stripping performance evaluation-based tensile test structure according to claim 2, wherein: the opposite surfaces of the two clamping plates are smooth planes or structures with teeth.
6. The optical cable sheath stripping performance evaluation-based tensile test structure according to claim 2, wherein: the number of the locking holes on any clamping plate is four, and the four locking holes are distributed in four corners.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921715470.0U CN211652340U (en) | 2019-10-14 | 2019-10-14 | Tensile test structure based on evaluation of stripping performance of optical cable sheath |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921715470.0U CN211652340U (en) | 2019-10-14 | 2019-10-14 | Tensile test structure based on evaluation of stripping performance of optical cable sheath |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113533027A (en) * | 2021-08-12 | 2021-10-22 | 重庆久坤电子有限公司 | FFC flat cable tension tester |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113533027A (en) * | 2021-08-12 | 2021-10-22 | 重庆久坤电子有限公司 | FFC flat cable tension tester |
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