CN114309360A - Cable shrinkage test equidistance system appearance device - Google Patents
Cable shrinkage test equidistance system appearance device Download PDFInfo
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- CN114309360A CN114309360A CN202111668356.9A CN202111668356A CN114309360A CN 114309360 A CN114309360 A CN 114309360A CN 202111668356 A CN202111668356 A CN 202111668356A CN 114309360 A CN114309360 A CN 114309360A
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- cable
- cross beam
- shrinkage test
- sample preparation
- preparation device
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Abstract
The invention relates to the technical field of cable detection, and discloses an equidistant sample preparation device for a cable shrinkage test. The invention fully utilizes the force translation theorem and the distance definition of two parallel planes, when a right hand holds a pressure lever to apply pressure to the midpoint of a cross beam tool rest, the pressure is parallelly transferred to the left and right points of the cross beam tool rest, namely a fixed blade and a movable blade, at the moment, a cable is in a tight state, and under the protection of a cable clamping roller and the assistance of left-hand poking, the equal-distance annular rolling cutting of a cable insulation section can be realized at one time, and the left and right end faces are tidy. The invention has the self-rebound function, pressure disappears, and the cutter automatically restores to the original position, thereby being convenient and fast. The invention has the advantages of small and exquisite appearance, light weight and suitability for carrying in multiple places.
Description
Technical Field
The invention belongs to the technical field of cable processing, and relates to an equidistant sample preparation device for a cable shrinkage test.
Background
In the production process of the crystalline polymer cable, if an extrusion die or a cooling mode is improper, residual stress in insulation is released under the action of heat to form shrinkage along with the extension of the cable operation time, so that a conductor is exposed possibly, and electric shock danger is generated. The thermal shrinkage test is the measurement of the shrinkage rate of the insulated wire core with the conductor in a heated state, and is used for representing the residual damage magnitude of the insulation thermal stress. General inspection rules, insulation mark length L0+/-5 mm, precision of 0.5mm and shrinkage rate not greater than 4%. And a certain torsional bending deformation exists in the process of stranding and cabling a plurality of insulation wire cores, the larger the conductor section is, the larger the wire core manual straightening difficulty is, and the larger the length error deviation is in the sample preparation process, so that the test result is inaccurate.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an equidistant sample preparation device for a cable shrinkage test, which solves accidental errors caused by human factors and improves the test accuracy.
In order to achieve the purpose, the invention is realized by the following technical scheme: the base, the base upper surface has linked firmly knife rest stand, depression bar pillar and cable clamp rod respectively, the knife rest stand comprises two guide posts of wearing the cover spring, and the spring top is equipped with the crossbeam knife rest with guide post sliding connection, and guide post top threaded connection has set nut, crossbeam knife rest lower surface both sides all are equipped with the blade that is used for cutting the cable, and depression bar pillar top articulates there is the depression bar that is used for pressing the crossbeam knife rest, and the depression bar is located the top of crossbeam knife rest.
Furthermore, a fixed cover plate is arranged at the upper end of the guide rod and is fixed on the guide rod through a positioning nut.
Further, the compression bar strut is a square steel column.
Furthermore, the pressure lever is wavy, is provided with a section of straight-bar handle, and the valley point of the pressure lever is pressed on the cross beam tool rest.
Furthermore, a fixed cutter holder is welded at one end of the lower surface of the cross beam cutter rest, a square hole with the length of 10mm-15mm is formed in the other end of the cross beam cutter rest, the movable cutter holder is connected below the cross beam cutter rest through a positioning screw arranged in the square hole, and the fixed cutter holder and the movable cutter holder are both connected with blades through bolts.
Furthermore, the cable clamping rods are two groups of steel rods welded on the base under the fixed tool clamp and the movable tool clamp, each group is provided with two steel rods used for limiting the cable, the length of each steel rod is 10-20 mm, and the steel rods are parallel to the tool rest of the upper cross beam.
Furthermore, the base is made by the steel sheet, and the base lateral wall has still linked firmly the handle.
The invention has the following positive beneficial effects:
the device is inspired by the translation theorem of force and the definition of the distance between two parallel planes, when a right hand holds a pressure lever to apply pressure to the middle point of a cross beam tool rest, the pressure is parallelly transferred to the left and right points of the cross beam tool rest, namely a fixed blade and a movable blade, at the moment, a cable is in a tight state, and under the protection of a cable clamping rod and the assistance of left-hand stirring, the equal-distance annular rolling cutting of a cable insulation section can be realized at one time, and the left end face and the right end face are tidy. The invention has the self-rebound function, pressure disappears, and the cutter automatically restores to the original position, thereby being convenient and fast. The invention has the advantages of small and exquisite appearance, light weight and suitability for carrying in multiple places.
Drawings
FIG. 1 is a perspective view of an isometric sample preparation device for a cable shrinkage test according to the present invention;
FIG. 2 is a front view of an isometric sample preparation device for a cable shrinkage test according to the present invention;
FIG. 3 is a right side view of an isometric sample preparation device for a cable shrinkage test of the present invention;
fig. 4 is a top view of an isometric sample preparation device for a cable shrinkage test according to the invention.
In the figure: 1. a base; 2. a handle; 3. a tool holder column; 4. a strut of a compression bar; 5. a cable clamping rod; 6. a pressure lever; 7. a spring; 8. a beam tool rest; 9. fixing the cover plate; 10. positioning a nut; 11. fixing the tool holder; 12. a movable tool holder; 13. a blade.
The specific implementation mode is as follows:
the invention is further described with reference to the accompanying drawings in which:
referring to fig. 1-4, an equidistance system appearance device of cable contraction test, including base 1, base 1 upper surface has linked firmly knife rest stand 3 respectively, depression bar pillar 4 and cable clamp rod 5, knife rest stand 3 comprises two guide posts of wearing set spring 7, in this embodiment, the guide post is circular steel column, spring 7 top is equipped with the crossbeam knife rest 8 with guide post sliding connection, guide post top threaded connection has set nut 10, crossbeam knife rest 8 lower surface both sides all are equipped with the blade 13 that is used for cutting the cable, depression bar pillar 4 top articulates there is the depression bar 6 that is used for pressing crossbeam knife rest 8, depression bar 6 is located the top of crossbeam knife rest 8.
According to one embodiment of the present invention, as shown in figures 1-4,
the upper end of the guide rod is provided with a fixed cover plate 9, the fixed cover plate 9 is fixed on the guide rod through a positioning nut 10, the press rod 6 is positioned between the fixed cover plate 9 and the cross beam tool rest 8, the fixed cover plate 9 has a limiting effect, and accidents caused by the fact that the spring 7 is too large in elasticity and the press rod 6 turns over are prevented.
The compression bar strut 4 is a square steel column, a round hole is drilled on the side surface of the upper end of the steel column, and the compression bar strut is hinged with the inverted U-shaped lifting lug of the compression bar 6 through a fastening screw.
The depression bar 6 is the wave, and depression bar 6 is equipped with one section straight-bar handle, and depression bar 6's millet point supports presses on crossbeam knife rest 8, and depression bar 6 comprises a circular steel pipe and the welding of "U" shape lug, and the first half section of steel pipe forms the wave type by square extrusion and bending back, and the transition curve can be remain in latter half section linking department. When the pressing rod 6 is pressed down, the valley point of the pressing rod can just prop against the cross beam knife rest 8, and when the pressing down action disappears, the spring 7 pushes up the cross beam knife rest 8 and the pressing rod 6 to achieve the purpose of resetting.
The lower surface of the cross beam tool rest 8 is welded with a fixed tool holder 11 at one end, the other end of the cross beam tool rest 8 is provided with a square hole with the length of 10mm-15mm, a movable tool holder 12 is connected below the cross beam tool rest 8 through a positioning screw arranged in the square hole, the fixed tool holder 11 and the movable tool holder 12 are all connected with a blade 13 through bolts, and the distance between the blades 13 reaches L0+6mm to the nearest 0.5 mm.
According to another embodiment of the present invention, as shown in figures 1-4,
the base 1 is made by the steel sheet, and base 1 lateral wall has still linked firmly handle 2, and handle 2 makes things convenient for equipment to move.
All the parts are made of common carbon steel, so that the manufacturing cost is economical and practical.
When the device is used for carrying out equidistant cutting on cables with insulation, the right hand holds the pressure lever 6 to press down, the left hand rolls the cables after the two blades 13 are cut off in a vertical pressing mode, and the equidistant cutting of insulation shrinkage samples is finished at one time. Keeping the insulation of the middle section, stripping the rest insulation to expose the conductor, marking lines at the positions of 3mm left and right, wherein the distance between the measurement marks is in accordance with L in the test standard0(general L)0=200 mm), and sent into an oven for testing. After the test is finished, the insulation shrinkage length L is measured,calculating the shrinkage rate of the cable Delta L = (L-L)0)/ L0X 100% to verify whether the cable shrinkage test is acceptable.
In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly attached, detachably attached, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (7)
1. The utility model provides a cable shrinkage test equidistance system appearance device which characterized in that: including base (1), base (1) upper surface has linked firmly knife rest stand (3), depression bar pillar (4) and cable clamp rod (5) respectively, knife rest stand (3) are worn the guide post of set spring (7) by two and are constituteed, and spring (7) top is equipped with crossbeam knife rest (8) with guide post sliding connection, and guide post top threaded connection has set nut (10), crossbeam knife rest (8) lower surface both sides all are equipped with blade (13) that are used for cutting the cable, and depression bar pillar (4) top articulates there is depression bar (6) that are used for pressing crossbeam knife rest (8), and depression bar (6) are located the top of crossbeam knife rest (8).
2. The equidistant sample preparation device of cable shrinkage test of claim 1, characterized in that: the guide bar upper end is equipped with fixed apron (9), fixed apron (9) are fixed on the guide bar through set nut (10).
3. The equidistant sample preparation device of cable shrinkage test of claim 2, characterized in that: the compression bar strut (4) is a square steel column.
4. The equidistant sample preparation device of cable shrinkage test of claim 3, characterized in that: the pressing rod (6) is wavy, the pressing rod (6) is provided with a section of straight rod handle, and valley points of the pressing rod (6) are pressed on the cross beam tool rest (8).
5. The equidistant sample preparation device of cable shrinkage test of claim 4, characterized in that: the fixed tool holder (11) is welded at one end of the lower surface of the cross beam tool rest (8), a square hole with the length of 10mm-15mm is formed in the other end of the cross beam tool rest (8), the movable tool holder (12) is connected below the cross beam tool rest (8) through a positioning screw installed in the square hole, and the fixed tool holder (11) and the movable tool holder (12) are connected with a blade (13) through bolts.
6. The equidistant sample preparation device of cable shrinkage test of claim 5, characterized in that: the cable clamping rods (5) are two groups of steel rods welded on the base (1) right below the fixed tool holders (11) and the movable tool holders (12), each group is provided with two steel rods used for limiting the cables, the length of each steel rod is 10-20 mm, and the steel rods are parallel to the upper cross beam tool rest (8).
7. The equidistant sample preparation device of cable shrinkage test of any of claims 1-6, wherein: the base (1) is made of a steel plate, and the side wall of the base (1) is fixedly connected with a handle (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111668356.9A CN114309360A (en) | 2021-12-31 | 2021-12-31 | Cable shrinkage test equidistance system appearance device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111668356.9A CN114309360A (en) | 2021-12-31 | 2021-12-31 | Cable shrinkage test equidistance system appearance device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114309360A true CN114309360A (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111668356.9A Pending CN114309360A (en) | 2021-12-31 | 2021-12-31 | Cable shrinkage test equidistance system appearance device |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0924503A1 (en) * | 1997-12-19 | 1999-06-23 | Anton Meyer & Co.AG | A device for use in an ultramicrotome |
| CN101225597A (en) * | 2008-02-13 | 2008-07-23 | 中国农业科学院兰州畜牧与兽药研究所 | Floccus sectionalized sample cutting instrument |
| CN203019433U (en) * | 2013-01-24 | 2013-06-26 | 王桂玲 | Cutter adjustable in length |
| CN206898279U (en) * | 2017-04-01 | 2018-01-19 | 中广核研究院有限公司北京分公司 | Patch chip pin shearing device |
| CN109047591A (en) * | 2018-09-27 | 2018-12-21 | 吴江市凯宝电器有限公司 | A kind of data line fixed-length cutting device |
| CN210487303U (en) * | 2019-08-26 | 2020-05-08 | 陕西工业职业技术学院 | Physical and chemical detection sampling device |
| CN211527865U (en) * | 2019-10-25 | 2020-09-18 | 河北泉恩高科技管业有限公司 | Polyolefin plastic DSC detects sampling device |
| CN213559645U (en) * | 2020-09-02 | 2021-06-29 | 吴迪 | Civil engineering construction is with high-efficient reinforcing bar cutting equipment |
-
2021
- 2021-12-31 CN CN202111668356.9A patent/CN114309360A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0924503A1 (en) * | 1997-12-19 | 1999-06-23 | Anton Meyer & Co.AG | A device for use in an ultramicrotome |
| CN101225597A (en) * | 2008-02-13 | 2008-07-23 | 中国农业科学院兰州畜牧与兽药研究所 | Floccus sectionalized sample cutting instrument |
| CN203019433U (en) * | 2013-01-24 | 2013-06-26 | 王桂玲 | Cutter adjustable in length |
| CN206898279U (en) * | 2017-04-01 | 2018-01-19 | 中广核研究院有限公司北京分公司 | Patch chip pin shearing device |
| CN109047591A (en) * | 2018-09-27 | 2018-12-21 | 吴江市凯宝电器有限公司 | A kind of data line fixed-length cutting device |
| CN210487303U (en) * | 2019-08-26 | 2020-05-08 | 陕西工业职业技术学院 | Physical and chemical detection sampling device |
| CN211527865U (en) * | 2019-10-25 | 2020-09-18 | 河北泉恩高科技管业有限公司 | Polyolefin plastic DSC detects sampling device |
| CN213559645U (en) * | 2020-09-02 | 2021-06-29 | 吴迪 | Civil engineering construction is with high-efficient reinforcing bar cutting equipment |
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