CN111337338A - Fatigue test device for repeatedly winding and unwinding optical cable - Google Patents
Fatigue test device for repeatedly winding and unwinding optical cable Download PDFInfo
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- CN111337338A CN111337338A CN202010269926.6A CN202010269926A CN111337338A CN 111337338 A CN111337338 A CN 111337338A CN 202010269926 A CN202010269926 A CN 202010269926A CN 111337338 A CN111337338 A CN 111337338A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 38
- 238000009661 fatigue test Methods 0.000 title claims abstract description 27
- 238000004804 winding Methods 0.000 title claims abstract description 22
- 238000012360 testing method Methods 0.000 claims abstract description 64
- 230000007246 mechanism Effects 0.000 claims abstract description 38
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 10
- 230000008859 change Effects 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention provides a fatigue test device for repeatedly winding and unwinding a wound optical cable, which comprises: a drive mechanism including a drive wheel driven to rotate by the first rotary drive device; the loading mechanism comprises a test wheel connected with the linear driving device, and the linear driving device drives the test wheel to move and applies a loading force; the wrap angle mechanism is arranged between the driving mechanism and the loading mechanism and comprises a guide wheel which is arranged on the support in a height-adjustable mode, and the height of the guide wheel is not less than that of the driving wheel and/or the test wheel; the control system is electrically connected with the first rotary driving device and the linear driving device; the driving mechanism, the wrap angle mechanism and the loading mechanism are sequentially arranged on the rack. The invention has the advantages that the repeated winding and unwinding process of the optical cable wound on the winding drum under the action of actual working tension can be efficiently, conveniently and conveniently simulated, the state of the optical cable after the test can be observed, and the fatigue resistance of the optical cable can be comprehensively evaluated.
Description
Technical Field
The invention relates to wire and cable detection equipment, in particular to a fatigue test device for repeatedly winding and unwinding a wound optical cable.
Background
For many types of optical cables, the application working environment is special and harsh, and the optical cables are mainly installed and wound on a winding drum of a winch, bear certain tension along with the rotation of the winding drum, and perform winding movement of repeated winding and unwinding. After long-time work, the optical cable may be fatigued, and further, the problems of structural change, performance degradation and the like occur, which may damage system engineering. Therefore, a device capable of performing the optical cable fatigue test efficiently, accurately and conveniently needs to be designed, various test requirements are met, and the performance change of the optical cable is guaranteed to be known visually and timely.
Disclosure of Invention
In view of the above-mentioned drawbacks, an object of the present invention is to provide a fatigue testing apparatus for repeatedly winding and unwinding an optical cable.
The invention provides a fatigue test device for repeatedly winding and unwinding a wound optical cable, which comprises: a drive mechanism including a drive wheel driven to rotate by the first rotary drive device; the loading mechanism comprises a test wheel connected with a linear driving device, and the linear driving device drives the test wheel to move and applies a loading force; the wrap angle mechanism is arranged between the driving mechanism and the loading mechanism and comprises a guide wheel which is installed on a support in a height-adjustable mode, and the height of the guide wheel is not less than that of the driving wheel and/or the test wheel; the control system is electrically connected with the first rotary driving device and the linear driving device; the driving mechanism, the wrap angle mechanism and the loading mechanism are sequentially arranged on the rack.
Preferably, the linear driving means is a ball screw.
Preferably, the screw rod of the ball screw is in transmission connection with the second rotary driving device through a gear, and the movable nut of the ball screw is connected with the test wheel.
Preferably, one end of the screw is fixedly connected with the frame through a fixing bracket.
Preferably, the movable nut is fixedly connected with a movable cross beam, the test wheel is fixedly connected with the loading cross beam through a connecting support, and the movable cross beam is connected with the loading cross beam through a connecting rod.
Preferably, guide rails are arranged on two sides of the rack, and the movable beam and the loading beam are respectively connected with the guide rails in a sliding manner.
Preferably, the inner side of the frame is also provided with a slide rail matched with the test wheel.
Preferably, a limit switch and a counter are further mounted on the driving wheel.
Preferably, the cornerite mechanism still includes the installation axle, be equipped with a plurality of installation positions along the left and right direction on the installation axle, the leading wheel can dismantle the connection in the installation position.
Preferably, the support is provided with a plurality of fixing positions along the up-down direction, and the mounting shaft is detachably connected in the fixing positions.
The invention has the advantages that:
firstly, in order to simulate the repeated winding and unwinding process of the optical cable wound on the winding drum under the action of actual working tension, repeated winding and unwinding tests are carried out for a certain number of times under simulated actual working conditions, so that the state of the optical cable after the test can be observed, and the fatigue resistance of the optical cable can be comprehensively evaluated;
secondly, various test wheels can be arranged, the replacement is quick and convenient, and the test requirements of optical cables with various outer diameters can be met;
thirdly, the testing machine can provide the maximum loading force of 200kN, and can meet the requirement of testing tension on the optical cable in most of the current repeated winding and unwinding working environments;
fourthly, the equipment can also carry out various mechanical tests such as a tensile test, a pulley test, a flattening test and the like;
fifthly, the testing linear velocity of the equipment is adjustable, and the requirement of quick and efficient testing can be met by adopting the maximum linear velocity;
sixth, the device can realize real-time performance monitoring of optical cable performance, and visually and timely know performance changes of the optical cable.
Drawings
FIG. 1 is a front view of a fatigue testing apparatus of the present invention;
FIG. 2 is a top view of the fatigue testing apparatus of the present invention;
FIG. 3 is a schematic view at A-A in FIG. 2;
FIG. 4 is a perspective view of the fatigue testing apparatus of the present invention;
fig. 5 is a schematic view of the working state of the fatigue testing apparatus of the present invention.
Element number description:
1 drive wheel
11 first rotary drive device
2 guide wheel
21 support
22 fixed position
23 mounting shaft
24 connecting block
25 mounting position
3 test wheel
31 rope groove
32 connecting bracket
33 sliding rail
4 screw rod
41 Movable nut
42 fixed support
43 second rotary drive
44 drive wheel
45 driven wheel
51 Mobile crossbeam
52 load beam
53 guide rail
54 connecting rod
6 machine frame
61 support leg
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and are not intended to limit the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
Fig. 1 is a front view of the fatigue testing apparatus according to the present invention, and in the following description, with reference to the drawing in fig. 1 as a direction, an upward direction is taken along the drawing sheet, a downward direction is taken along the drawing sheet, a rearward direction is taken along the drawing sheet, a forward direction is taken along the drawing sheet, a left direction is taken perpendicular to the drawing sheet, and a right direction is taken perpendicular to the drawing sheet.
As shown in figures 1 and 2, the invention provides a fatigue test device for repeatedly winding and unwinding a wound optical cable, which comprises a driving mechanism, a loading mechanism, a wrap angle mechanism and a control system, wherein the driving mechanism, the wrap angle mechanism and the loading mechanism are sequentially arranged on a rack 6 from front to back, and the bottom of the rack 6 is provided with a plurality of supporting legs 61. The driving mechanism comprises a driving wheel 1 driven by a first rotary driving device 11 to rotate, wherein the first rotary driving device 11 is specifically a servo motor speed reducer set, is connected with the driving wheel 1 through a coupler, and controls the driving wheel 1 to rotate repeatedly at a certain frequency under the control of a control system. And the driving wheel 1 is also provided with a limit switch and a counter for acquiring a breaking signal of the optical cable and recording test times.
As shown in fig. 2 and 4, the loading mechanism includes a test wheel 3 connected to a linear driving device, and the linear driving device drives the test wheel 3 to move backward, thereby applying a loading force to the test wheel 3. In specific implementation, the linear driving device is a ball screw, and the ball screw has the characteristics of stable operation, high reciprocating motion repetition precision and the like. Wherein, ball's screw rod 4 passes through gear drive with second rotary driving device 43 and is connected, and second rotary driving device 43 is for installing the servo motor speed reduction unit in the ball below, output fixedly connected with action wheel 44, and screw rod 4's rear end fixedly connected with follows driving wheel 45, action wheel 44 with follow the transmission connection between the driving wheel 45, the front end of screw rod 4 then passes through fixed bolster 42 and frame 6 fixed connection for ball's installation is stable firm. The movable nut 41 of the ball screw is sleeved on the screw rod 4 and connected with the test wheel 3, when the second rotary driving device 43 drives the screw rod 4 to rotate, and the movable nut 41 makes linear motion, the movable nut 41 exerts backward loading force on the test wheel 3, and the test purpose is achieved. Specifically, the movable nut 41 is fixedly connected with a movable beam 51, the test wheel 3 is fixedly connected with a loading beam 52 through a connecting bracket 32, two ends of the movable beam 51 and two ends of the loading beam 52 are respectively contacted with the upper surface of the frame 6, and the two ends are connected through two connecting rods 54. In order to further ensure that the loading force is always kept on the same axis, guide rails 53 are arranged on two sides of the upper surface of the frame 6, and the moving beam 51 and the loading beam 52 are respectively connected with the guide rails 53 in a sliding manner. Besides, the inner side of the frame 6 is provided with a slide rail 33 which is matched with the test wheel 3, so that the movable beam 51 and the loading beam 52 can drive the test wheel 3 to move along the same direction. The control system is electrically connected with the second rotation driving device 43, and the loading force is kept constant through automatic adjustment, and the maximum value of the loading force is 200 kN. In addition, the constant displacement control and the constant force control can be realized by adopting a computer displacement closed loop and force closed loop control. The number of rope grooves 31 on the test wheel 3 can be adjusted as required.
As shown in fig. 1, 3 and 4, the wrap angle mechanism is arranged between the driving mechanism and the loading mechanism, and comprises a guide wheel 2 which is height-adjustably mounted on a support 21, so that the requirement that the test optical cable performs a test at a certain wrap angle is met. Specifically, cornerite mechanism includes that both ends are provided with the installation axle 23 of connecting block 24, is equipped with a plurality of installation positions 25 along the left and right direction on the installation axle 23, and leading wheel 2 demountable connection is in installation position 25. A plurality of fixing positions 22 are arranged on the support 21 along the up-down direction, the specific distance between two adjacent fixing positions 22 is 200mm, and the connecting blocks 24 at the two ends of the mounting shaft 23 are detachably connected with the fixing positions 22. Through setting up a plurality of installation positions 25 and fixed position 22, satisfy leading wheel 2 upper and lower left and right sides orientation's different mounted position demand, be convenient for change the leading wheel 2 of different wheel footpaths.
As shown in fig. 5, the fatigue test apparatus of the present invention is based on the completion of a single stage fatigue test, and the working method is as follows:
test mode a: only the optical cable 7 is wound on the driving wheel 1 and the test wheel 3, the driving wheel 1 and the test wheel 3 are positioned at the same height, the driving wheel 1 is controlled to rotate positively and negatively at a certain frequency, and the linear driving device is controlled to apply a certain loading force to the test wheel 3, so that the fatigue test of the optical cable 7 is completed;
test mode B: the optical cable 7 is wound on the driving wheel 1 and the test wheel 3, the optical cable 7 passes through the guide wheel 2 on the way, the height of the guide wheel 2 is set to be larger than that of the driving wheel 1 and/or the test wheel 3, the driving wheel 1 and the test wheel 3 are located at the same height, so that the optical cable 7 has a certain wrap angle, the driving wheel 1 is controlled to rotate positively and negatively at a certain frequency, the linear driving device is controlled to apply a certain loading force to the test wheel 3, and the fatigue test of the optical cable 7 with the wrap angle is completed.
The driving wheel 1 and the testing wheel 3 for the test are processed by HB260-280 modulation by adopting a material QT600, and the surface roughness of the rope groove 31 is 1.6-3.2.
In conclusion, the invention has the advantages that:
firstly, in order to simulate the repeated winding and unwinding process of the optical cable wound on the winding drum under the action of actual working tension, repeated winding and unwinding tests are carried out for a certain number of times under simulated actual working conditions, so that the state of the optical cable after the test can be observed, and the fatigue resistance of the optical cable can be comprehensively evaluated;
secondly, various test wheels can be arranged, the replacement is quick and convenient, and the test requirements of optical cables with various outer diameters can be met;
thirdly, the testing machine can provide the maximum loading force of 200kN, and can meet the requirement of testing tension on the optical cable in most of the current repeated winding and unwinding working environments;
fourthly, the equipment can also carry out various mechanical tests such as a tensile test, a pulley test, a flattening test and the like;
fifthly, the testing linear velocity of the equipment is adjustable, and the requirement of quick and efficient testing can be met by adopting the maximum linear velocity;
sixth, the device can realize real-time performance monitoring of optical cable performance, and visually and timely know performance changes of the optical cable.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. A fatigue test device for repeatedly winding and unwinding a wound optical cable, comprising:
a drive mechanism including a drive wheel (1) driven to rotate by a first rotary drive device (11);
the loading mechanism comprises a test wheel (3) connected with a linear driving device, and the linear driving device drives the test wheel (3) to move and applies a loading force;
the wrap angle mechanism is arranged between the driving mechanism and the loading mechanism and comprises a guide wheel (2) which is mounted on a support (21) in a height-adjustable mode, and the height of the guide wheel (2) is not less than that of the driving wheel (1) and/or the test wheel (3);
the control system is electrically connected with the first rotary driving device (11) and the linear driving device;
the driving mechanism, the wrap angle mechanism and the loading mechanism are sequentially arranged on the rack (6).
2. A fatigue testing device according to claim 1, wherein said linear driving means is a ball screw.
3. A fatigue testing device according to claim 2, wherein the screw (4) of the ball screw is in gear transmission connection with the second rotary drive (43), and the movable nut (41) of the ball screw is in connection with the test wheel (3).
4. A fatigue testing device according to claim 3, wherein one end of the screw (4) is fixedly connected with the frame (6) by a fixing bracket (42).
5. A fatigue testing device according to claim 3, wherein a movable beam (51) is fixedly connected to the movable nut (41), the testing wheel (3) is fixedly connected with a loading beam (52) through a connecting bracket (32), and the movable beam (51) and the loading beam (52) are connected through a connecting rod (54).
6. A fatigue testing device according to claim 5, wherein guide rails (53) are provided on both sides of the frame (6), and the moving beam (51) and the loading beam (52) are slidably connected to the guide rails (53), respectively.
7. A fatigue testing device according to claim 3, wherein a slide rail (33) matched with the testing wheel (3) is arranged inside the frame (6).
8. A fatigue testing device according to claim 1, wherein a limit switch and a counter are further mounted on the driving wheel (1).
9. The fatigue testing device according to claim 1, wherein the wrap angle mechanism further comprises a mounting shaft (23), a plurality of mounting positions (25) are provided on the mounting shaft (23) in the left-right direction, and the guide wheel (2) is detachably connected in the mounting positions (25).
10. A fatigue testing device according to claim 9, wherein a plurality of fixing positions (22) are arranged on the support (21) along the up-down direction, and the mounting shaft (23) is detachably connected in the fixing positions (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010269926.6A CN111337338A (en) | 2020-04-08 | 2020-04-08 | Fatigue test device for repeatedly winding and unwinding optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010269926.6A CN111337338A (en) | 2020-04-08 | 2020-04-08 | Fatigue test device for repeatedly winding and unwinding optical cable |
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| Publication Number | Publication Date |
|---|---|
| CN111337338A true CN111337338A (en) | 2020-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010269926.6A Pending CN111337338A (en) | 2020-04-08 | 2020-04-08 | Fatigue test device for repeatedly winding and unwinding optical cable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112666028A (en) * | 2020-12-28 | 2021-04-16 | 浙江晨光电缆股份有限公司 | Power cable bending test device |
| CN113804564A (en) * | 2021-08-23 | 2021-12-17 | 中山大学 | Method for analyzing cumulative plastic deformation of ultra-duplex stainless steel pipe of umbilical cable |
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|---|---|---|---|---|
| CN101216397A (en) * | 2008-01-10 | 2008-07-09 | 上海交通大学 | Elevator armored rope bending fatigue state experimental bench |
| CN105181497A (en) * | 2015-08-20 | 2015-12-23 | 深圳万测试验设备有限公司 | Steel wire rope fatigue test device |
| CN205719829U (en) * | 2016-05-31 | 2016-11-23 | 臧祥力 | A kind of rubber fatigue testing machine |
| CN107741369A (en) * | 2017-09-27 | 2018-02-27 | 北京航空航天大学 | A kind of rope fatigue wear test device of adjustable cornerite |
| CN211825393U (en) * | 2020-04-08 | 2020-10-30 | 上海电缆研究所有限公司 | Fatigue test device for repeatedly winding and unwinding optical cable |
-
2020
- 2020-04-08 CN CN202010269926.6A patent/CN111337338A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101216397A (en) * | 2008-01-10 | 2008-07-09 | 上海交通大学 | Elevator armored rope bending fatigue state experimental bench |
| CN105181497A (en) * | 2015-08-20 | 2015-12-23 | 深圳万测试验设备有限公司 | Steel wire rope fatigue test device |
| CN205719829U (en) * | 2016-05-31 | 2016-11-23 | 臧祥力 | A kind of rubber fatigue testing machine |
| CN107741369A (en) * | 2017-09-27 | 2018-02-27 | 北京航空航天大学 | A kind of rope fatigue wear test device of adjustable cornerite |
| CN211825393U (en) * | 2020-04-08 | 2020-10-30 | 上海电缆研究所有限公司 | Fatigue test device for repeatedly winding and unwinding optical cable |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112666028A (en) * | 2020-12-28 | 2021-04-16 | 浙江晨光电缆股份有限公司 | Power cable bending test device |
| CN113804564A (en) * | 2021-08-23 | 2021-12-17 | 中山大学 | Method for analyzing cumulative plastic deformation of ultra-duplex stainless steel pipe of umbilical cable |
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