CN103968741B - Power cable turning radius analyzer - Google Patents
Power cable turning radius analyzer Download PDFInfo
- Publication number
- CN103968741B CN103968741B CN201410223887.0A CN201410223887A CN103968741B CN 103968741 B CN103968741 B CN 103968741B CN 201410223887 A CN201410223887 A CN 201410223887A CN 103968741 B CN103968741 B CN 103968741B
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- Prior art keywords
- protractor
- power cable
- turning radius
- cable turning
- protractors
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- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 2
- 238000005452 bending Methods 0.000 abstract description 5
- 229920005479 Lucite® Polymers 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010616 electrical installation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The present invention relates to the measuring appliance of power cable turning radius, be specially power cable turning radius analyzer.The problem solving to lack power cable turning radius appliance on the spot at present.This power cable turning radius analyzer includes two protractors that range is identical and range is equal to 90 degree, each protractor is fixed a chord member, the length of two chord members is equal and radius more than protractor, one end of chord member overlaps with the zero degree graduation mark of protractor with center alignment (standard) and its axis of protractor, and two protractors are hinged in center.Power cable bending radius analyzer of the present invention, measures 3 radiuses calmly justified on the interior camber line of cable bend section, it is possible to accurately calculate to obtain cable turning radius；Be suitable to site work environment use, be particularly suitable in cable duct small space and use.Easy to carry, simple to operate.
Description
Technical field
The present invention relates to the measuring appliance of power cable turning radius, be specially power cable turning radius analyzer.
Background technology
The power cable of big through-put power, because its external diameter is thick, bending radius, less than minimum bending radius, will injure insulating barrier sheath；Therefore GB50168-2006 " erection works of electrical installations code for construction and acceptance of cable levels " regulation: " bending radius during cable laying is the 10 of the different structure outside diameter of cable, 15,20,30 times respectively." existing method of testing by range estimation and experience, lack appliance on the spot.
Summary of the invention
This invention address that the problem lacking power cable turning radius appliance on the spot at present, it is provided that a kind of power cable turning radius analyzer.
The present invention adopts the following technical scheme that realization: power cable turning radius analyzer, including two protractors that range is identical and range is equal to 90 degree, each protractor is fixed a chord member, the length of two chord members is equal and radius more than protractor, one end of chord member overlaps with the zero degree graduation mark of protractor with center alignment (standard) and its axis of protractor, and two protractors are hinged in center.
During measurement, make the free end of two chord members and the center of protractor, be close to the Inner arc of cable turning section.By geometry it can be seen that the intersection point of the perpendicular bisector of two isometric chord members is exactly the center of circle.Therefore cable turns round, the radius R of circular arc should be the function of the length B of chord member and two chord member angle α, it may be assumed that R=(B/2)/cos(α/2).The angle α of two chord members is equal to the coincidence number of degrees sum (graduation mark always having identical number of degrees on two protractors is alignment) of two panels protractor.The length B of the angle α value recorded, chord member is substituted into above formula, just can be regarded as to obtain the turning radius R of cable.
Power cable bending radius analyzer of the present invention, measures 3 radiuses calmly justified on the interior camber line of cable bend section, it is possible to accurately calculate to obtain cable turning radius；Be suitable to site work environment use, be particularly suitable in cable duct small space and use.Easy to carry, simple to operate.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
In figure: 1-post cuts with scissors, 2-protractor, 3-chord member, D-cable.
Detailed description of the invention
Power cable turning radius analyzer, including two protractors 2 that range is identical and range is equal to 90 degree, each protractor 2 is fixed a chord member 3, the length of two chord members is equal and radius more than protractor, one end of chord member 3 overlaps with the zero degree graduation mark of protractor with center alignment (standard) and its axis of protractor, and two protractors are hinged in center.When being embodied as, it is hinged that two protractors adopt post to cut with scissors 1 in center.Chord member 3 manufactures with stainless steel tube；Termination plug plug, strengthens termination rigidity and wearability.Protractor 2 white clear lucite manufactures.
Claims (4)
1. a power cable turning radius analyzer, it is characterized in that including two protractors (2) that range is identical and range is equal to 90 degree, each protractor (2) is fixed a chord member (3), the length of two chord members is equal and radius more than protractor, one end of chord member (3) overlaps with the zero degree graduation mark of protractor with the center alignment of protractor and its axis, and two protractors are hinged in center；
During measurement, make the free end of two chord members and the center of protractor, be close to the Inner arc of cable turning section；Cable turns round the radius R=(B/2 of circular arc)/cos(α/2), wherein B is the length of chord member, and α is equal to the coincidence number of degrees sum of two panels protractor, and the graduation mark namely always having identical number of degrees on two protractors is alignment.
2. power cable turning radius analyzer according to claim 1, it is characterised in that two protractors adopt post hinge (1) hinged in center.
3. power cable turning radius analyzer according to claim 1 and 2, it is characterised in that chord member (3) manufactures with stainless steel tube.
4. power cable turning radius analyzer according to claim 3, it is characterised in that stainless steel tube termination plug plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410223887.0A CN103968741B (en) | 2014-05-26 | 2014-05-26 | Power cable turning radius analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410223887.0A CN103968741B (en) | 2014-05-26 | 2014-05-26 | Power cable turning radius analyzer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103968741A CN103968741A (en) | 2014-08-06 |
| CN103968741B true CN103968741B (en) | 2016-07-06 |
Family
ID=51238547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410223887.0A Active CN103968741B (en) | 2014-05-26 | 2014-05-26 | Power cable turning radius analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103968741B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109839084B (en) * | 2019-01-25 | 2020-09-01 | 国家电网有限公司 | Turning radius detection device, system and method for high-voltage single-core cable |
| CN111272128B (en) * | 2020-02-25 | 2021-09-07 | 深圳供电局有限公司 | Measuring device |
| CN111366105B (en) * | 2020-04-24 | 2021-08-10 | 广东电网有限责任公司东莞供电局 | Cable bending radius measuring device and measuring method |
| CN111735364B (en) * | 2020-08-17 | 2020-11-13 | 广东电网有限责任公司东莞供电局 | Electric power heavy-calibre pipeline size measurement device |
| CN115164748B (en) * | 2022-06-30 | 2024-03-29 | 广东电网有限责任公司 | Cable turning radius determining device and method, and computer readable storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1058086A1 (en) * | 1999-06-04 | 2000-12-06 | CORTI, Luca | Determining the diameter of a circle by a pair of arms and an angle |
| CN1987338A (en) * | 2005-12-19 | 2007-06-27 | 甄晓春 | Circular radius measurer |
| CN200975866Y (en) * | 2006-12-01 | 2007-11-14 | 李梓军 | Protractor |
| CN202599299U (en) * | 2012-03-10 | 2012-12-12 | 王慧 | Circular arc radius measuring instrument |
| CN103162598A (en) * | 2013-03-18 | 2013-06-19 | 常向东 | Method and device for measuring curvature radius |
| CN203869644U (en) * | 2014-05-26 | 2014-10-08 | 国家电网公司 | Power cable turning radius tester |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60151501A (en) * | 1984-01-20 | 1985-08-09 | Mitsubishi Heavy Ind Ltd | Measuring instrument for radius of curvature |
| WO2005093366A1 (en) * | 2004-03-26 | 2005-10-06 | Keiichi Tachikawa | Method for measuring radius of curvature and measuring device |
-
2014
- 2014-05-26 CN CN201410223887.0A patent/CN103968741B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1058086A1 (en) * | 1999-06-04 | 2000-12-06 | CORTI, Luca | Determining the diameter of a circle by a pair of arms and an angle |
| CN1987338A (en) * | 2005-12-19 | 2007-06-27 | 甄晓春 | Circular radius measurer |
| CN200975866Y (en) * | 2006-12-01 | 2007-11-14 | 李梓军 | Protractor |
| CN202599299U (en) * | 2012-03-10 | 2012-12-12 | 王慧 | Circular arc radius measuring instrument |
| CN103162598A (en) * | 2013-03-18 | 2013-06-19 | 常向东 | Method and device for measuring curvature radius |
| CN203869644U (en) * | 2014-05-26 | 2014-10-08 | 国家电网公司 | Power cable turning radius tester |
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| Publication number | Publication date |
|---|---|
| CN103968741A (en) | 2014-08-06 |
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| C14 | Grant of patent or utility model | ||
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