CN103968741A - Power cable turning radius tester - Google Patents
Power cable turning radius tester Download PDFInfo
- Publication number
- CN103968741A CN103968741A CN201410223887.0A CN201410223887A CN103968741A CN 103968741 A CN103968741 A CN 103968741A CN 201410223887 A CN201410223887 A CN 201410223887A CN 103968741 A CN103968741 A CN 103968741A
- Authority
- CN
- China
- Prior art keywords
- power cable
- turning radius
- protractor
- cable turning
- chord member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The invention relates to a power cable turning radius measuring appliance, in particular to a power cable turning radius tester. The power cable turning radius tester solves the problem that there is a lack of power cable turning radius on-site detecting appliances currently, and comprises two protractors, wherein the two protractors are the same in measuring range, the measuring range is equal to 90 degrees, each protractor is fixedly provided with a chord member, the two chord members are equal in length, the length of each chord member is larger than the radius of the corresponding protractor, one end of each chord member aligns at the center of the corresponding protractor, the axis of each chord member coincides with the zero scale mark of the corresponding protractor, and the centers of the two protractors are hinged. According to the power cable turning radius tester, the radius of a circle defined by three points on an inner arc of a curved section of a cable is tested, and then the power cable turning radius can be accurately calculated and obtained. The power cable turning radius tester is applicable to field operation environment and particularly applicable to narrow space in cable trenches, and is convenient to carry and easy 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 large through-put power, because its external diameter is thick, bending radius is less than minimum bending radius, just can injure insulation course sheath; Therefore GB50168-2006 " erection works of electrical installations code for construction and acceptance of cable levels " regulation: " bending radius when cable laying is respectively 10,15,20,30 times of the different structure outside diameter of cable." existing method of testing is by range estimation and experience, shortage detects utensil on the spot.
Summary of the invention
The present invention solves current shortage power cable turning radius and detects the problem of utensil on the spot, and a kind of power cable turning radius analyzer is provided.
The present invention adopts following technical scheme to realize: power cable turning radius analyzer, comprise that the identical and range of two ranges equals the protractor of 90 degree, on each protractor, fix a chord member, two chord members equal in length and be greater than the radius of protractor, one end of chord member overlaps with the zero degree scale mark of protractor with the center-aligned of protractor (standard) and its axis, and two protractors are hinged in center.
When measurement, make the center of free end and the protractor of two chord members, be close to the interior circular arc of cable turning section.From geometry, 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 length B of chord member and the function of two chord member angle α, that is: R=(B/2)/cos(α/2).The angle α of two chord members equals the coincidence number of degrees sum (always having the scale mark of identical number of degrees to align on two protractors) of two protractors.By the length B substitution above formula of the angle α value recording, chord member, just can be regarded as to obtain the turning radius R of cable.
Power cable bending radius analyzer of the present invention, measure on the interior camber line of cable bend section 3 determine radius of a circle, can accurately calculate to obtain cable turning radius; Be suitable for site work environment and use, be particularly suitable for small space in cable duct and use.Easy to carry, simple to operate.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
In figure: 1-post hinge, 2-protractor, 3-chord member, D-cable.
Embodiment
Power cable turning radius analyzer, comprise that the identical and range of two ranges equals the protractor 2 of 90 degree, on each protractor 2, fix a chord member 3, two chord members equal in length and be greater than the radius of protractor, one end of chord member 3 overlaps with the zero degree scale mark of protractor with the center-aligned of protractor (standard) and its axis, and two protractors are hinged in center.When concrete enforcement, two protractors adopt post to cut with scissors in center 1 hinged.Chord member 3 use stainless-steel tubes are manufactured; Termination plug plug, strengthens termination rigidity and wearing quality.The white transparent organic glass manufacture of protractor 2 use.
Claims (4)
1. a power cable turning radius analyzer, it is characterized in that comprising that the identical and range of two ranges equals the protractor (2) of 90 degree, on each protractor (2), fix a chord member (3), two chord members equal in length and be greater than the radius of protractor, one end of chord member (3) overlaps with the zero degree scale mark of protractor with the center-aligned of protractor and its axis, and two protractors are hinged in center.
2. power cable turning radius analyzer according to claim 1, is characterized in that two protractors adopt post hinge (1) hinged in center.
3. power cable turning radius analyzer according to claim 1 and 2, is characterized in that chord member (3) manufactures with stainless-steel tube.
4. power cable turning radius analyzer according to claim 3, is characterized 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 true CN103968741A (en) | 2014-08-06 |
| CN103968741B 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) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109839084A (en) * | 2019-01-25 | 2019-06-04 | 国家电网有限公司 | A kind of turning radius detection device of high voltage single-core cable, system and method |
| CN111272128A (en) * | 2020-02-25 | 2020-06-12 | 深圳供电局有限公司 | Measuring device |
| CN111366105A (en) * | 2020-04-24 | 2020-07-03 | 广东电网有限责任公司东莞供电局 | Cable bending radius measuring device and measuring method |
| CN111735364A (en) * | 2020-08-17 | 2020-10-02 | 广东电网有限责任公司东莞供电局 | Electric power heavy-calibre pipeline size measurement device |
| CN115164748A (en) * | 2022-06-30 | 2022-10-11 | 广东电网有限责任公司 | Cable turning radius determining device and method, computer readable storage medium |
Citations (8)
| 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 |
| EP1058086A1 (en) * | 1999-06-04 | 2000-12-06 | CORTI, Luca | Determining the diameter of a circle by a pair of arms and an angle |
| WO2005093366A1 (en) * | 2004-03-26 | 2005-10-06 | Keiichi Tachikawa | Method for measuring radius of curvature and measuring device |
| 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 |
-
2014
- 2014-05-26 CN CN201410223887.0A patent/CN103968741B/en active Active
Patent Citations (8)
| 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 |
| EP1058086A1 (en) * | 1999-06-04 | 2000-12-06 | CORTI, Luca | Determining the diameter of a circle by a pair of arms and an angle |
| WO2005093366A1 (en) * | 2004-03-26 | 2005-10-06 | Keiichi Tachikawa | Method for measuring radius of curvature and measuring device |
| 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 |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109839084A (en) * | 2019-01-25 | 2019-06-04 | 国家电网有限公司 | A kind of turning radius detection device of high voltage single-core cable, system and method |
| CN111272128A (en) * | 2020-02-25 | 2020-06-12 | 深圳供电局有限公司 | Measuring device |
| CN111272128B (en) * | 2020-02-25 | 2021-09-07 | 深圳供电局有限公司 | Measuring device |
| CN111366105A (en) * | 2020-04-24 | 2020-07-03 | 广东电网有限责任公司东莞供电局 | Cable bending radius measuring device and measuring method |
| CN111735364A (en) * | 2020-08-17 | 2020-10-02 | 广东电网有限责任公司东莞供电局 | Electric power heavy-calibre pipeline size measurement device |
| 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 |
| CN115164748A (en) * | 2022-06-30 | 2022-10-11 | 广东电网有限责任公司 | Cable turning radius determining device and method, computer readable storage medium |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103968741B (en) | 2016-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103968741A (en) | Power cable turning radius tester | |
| CN106248048A (en) | A kind of shelves side based on total powerstation conducting wire sag observation procedure | |
| CN203869644U (en) | Power cable turning radius tester | |
| CN103954206A (en) | Power cable bending radius measuring scale | |
| CN108306674A (en) | A kind of localization method and positioning device of fault points of optical cables | |
| CN204255256U (en) | Indenture measuring instrument | |
| CN204495257U (en) | A kind of high-tension cable bending radius dip stick | |
| CN102607456A (en) | Measuring device for pipe radian | |
| CN204924145U (en) | Portable pipeline ovality measuring caliper | |
| CN205138388U (en) | Safe distance measuring apparatu | |
| CN204964049U (en) | A temperature measuring device for having more on size natural gas line | |
| CN203798295U (en) | Power cable bending radius measuring ruler | |
| CN103452047A (en) | Cable conduit orifice central point positioning device and use method | |
| CN210014731U (en) | Overhead conductor model measuring tool | |
| CN208124987U (en) | Multifunctional measuring positioning rule | |
| CN105291654A (en) | Folding-type multifunctional measuring scale | |
| CN206049143U (en) | A kind of compass for students | |
| CN204052432U (en) | Stirrup bent angle dip stick | |
| CN205112778U (en) | Multi -functional protractor is used to mathematics | |
| CN109921846A (en) | Fiber failure detection method based on historical data | |
| CN103615954A (en) | Electric line pit measuring instrument | |
| CN208505801U (en) | A kind of electrical casing pipe bend test detection device | |
| CN203265337U (en) | Bending machine with scales | |
| CN211008611U (en) | High-efficient quick pipeline hole construction location composite set | |
| CN203981203U (en) | A kind of infant incubator self-checking device of accurately alignment sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |