CN102778192A - Measuring tool for turning radius of high-voltage cable - Google Patents
Measuring tool for turning radius of high-voltage cable Download PDFInfo
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- CN102778192A CN102778192A CN2012102702048A CN201210270204A CN102778192A CN 102778192 A CN102778192 A CN 102778192A CN 2012102702048 A CN2012102702048 A CN 2012102702048A CN 201210270204 A CN201210270204 A CN 201210270204A CN 102778192 A CN102778192 A CN 102778192A
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- elastic rod
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- turn
- turning radius
- horizontal straight
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- A Measuring Device Byusing Mechanical Method (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The invention relates to a measuring tool for the turning radius of a high-voltage cable. The measuring tool is mainly characterized by comprising a horizontal straight ruler and an elastic rod, wherein a fixed end of the elastic rod and one end of the horizontal straight ruler are firmly arranged together; a movable end of the elastic rod is movably arranged in a slide way formed in the surface of the horizontal straight ruler; and when the movable end of the elastic rod is stressed by external force towards the fixed end, the elastic rod naturally forms a circular arc with varying radius. The invention provides a tool for directly measuring the turning radius of the high-voltage cable, wherein the horizontal straight ruler carved with the turning radius is connected with the elastic rod, external force is applied through the movable end of the elastic rod to drive the elastic rod to form the circular arc overlapped with the high-voltage cable, and the graduation at the junction of the horizontal straight ruler and the elastic rod is directly read to acquire the turning radius of the circular arc of the cable. The measuring tool has high measuring accuracy, is convenient to use and has a wide measuring range.
Description
Technical field
The invention belongs to the high-tension cable field, especially a kind of high-tension cable radius of turn survey instrument.
Background technology
In the laid processes of high-tension cable, should carry out in strict accordance with national standard and relevant regulations, with the function that guarantees that high-tension cable is brought into normal play.According to national standard, high-tension cable is in laid processes, and its radius of turn should be less than 20 times of its diameter D.At present; The instrument that Shang Weiyou directly measures the high-tension cable radius of turn; Common measuring method is to measure cable size in advance, re-uses the circular arc guiding ruler that steel plate is made respective diameters, uses the circular arc guiding ruler to measure at last at the construction field (site); Its measuring method is inconvenience very, and measuring accuracy is lower.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of reasonable in design, high-tension cable radius of turn survey instrument that measuring accuracy is high and easy to use is provided.
The present invention solves its technical matters and takes following technical scheme to realize:
A kind of high-tension cable radius of turn survey instrument; Comprise horizontal ruler and elastic rod; Fastening being installed together of one end of the stiff end of elastic rod and elastic rod; The mobile terminal of this elastic rod is movably arranged in the slideway that horizontal ruler surface is shaped on, and does the time spent when the mobile terminal of elastic rod receives to the external force of stiff end, and elastic rod forms the circular arc of change in radius.
And, on horizontal ruler surface, be shaped on the scale that calculates the cable radius of turn.
And the scale of said calculating cable radius of turn satisfies following formula:
In the following formula, r is a radius of turn, and x is the length of horizontal ruler, and l is an arc length.
Advantage of the present invention and good effect are:
The invention provides a kind of instrument of direct measurement high-tension cable radius of turn; Its horizontal ruler and elastic rod that will be carved with radius of turn links together; Applying external force through the mobile terminal at elastic rod makes elastic rod form the circular arc that coincides with high-tension cable; Directly just can obtain the radius of turn of cable circular arc on the read level ruler with the scale of elastic rod intersection, have measuring accuracy height, easy to use and measurement range is extensive.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a measuring principle synoptic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is done further detailed description.
A kind of high-tension cable radius of turn survey instrument; Like Fig. 1 and shown in Figure 2, comprise horizontal ruler 2 and elastic rod 1, this horizontal ruler is installed in parallel in elastic rod; Fastening being installed together of one end of the stiff end of elastic rod and elastic rod; The mobile terminal of this elastic rod is movably arranged in the slideway 4 that horizontal ruler surface is shaped on, and does the time spent when the mobile terminal of elastic rod receives to the external force of stiff end, and elastic rod can nature forms the circular arc of change in radius; Through measuring the distance on arc length and the horizontal ruler, then can accurately calculate radius of curvature.In order to measure the cable radius of turn intuitively, on horizontal ruler surface, be shaped on the scale 3 that calculates radius of turn.
Below in conjunction with Fig. 2 measuring principle of the present invention is described.Among the figure, x is the length of horizontal ruler, and l is an arc length, and r is a radius of turn, and then the length x of horizontal ruler satisfies following formula:
Can obtain radius of turn r by following formula is:
Thereby calculate the radius of turn of cable camber line exactly.
In order to measure the cable radius of turn intuitively, can the calculated value of above-mentioned cable radius of turn r be engraved on the horizontal ruler, form the horizontal ruler that is carved with the cable radius of turn, its measurement range can be from a certain value to infinitely great.
When using at the scene; The stiff end of high-tension cable radius of turn survey instrument is fixed on the high-tension cable; Through the position of horizontal adjustment mobile terminal on horizontal ruler elastic rod is overlapped with the flexibility of high-tension cable, with the scale at joining place, elastic rod mobile terminal, can directly obtain the radius of turn of cable on the read level ruler; Its measuring method is simple, and measurement range is extensive.
It is emphasized that; Embodiment of the present invention is illustrative; Rather than it is determinate; Therefore the present invention includes and be not limited to the embodiment described in the embodiment, every other embodiments that drawn by those skilled in the art's technical scheme according to the present invention belong to the scope that the present invention protects equally.
Claims (3)
1. high-tension cable radius of turn survey instrument; It is characterized in that: comprise horizontal ruler and elastic rod; Fastening being installed together of one end of the stiff end of elastic rod and elastic rod; The mobile terminal of this elastic rod is movably arranged in the slideway that horizontal ruler surface is shaped on, and does the time spent when the mobile terminal of elastic rod receives to the external force of stiff end, and elastic rod forms the circular arc of change in radius.
2. high-tension cable radius of turn survey instrument according to claim 1 is characterized in that: on horizontal ruler surface, be shaped on the scale that calculates the cable radius of turn.
3. high-tension cable radius of turn survey instrument according to claim 2 is characterized in that: the formula of the scale of said calculating cable radius of turn is:
In the following formula, r is a radius of turn, and x is the length of horizontal ruler, and l is an arc length.
Priority Applications (1)
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CN2012102702048A CN102778192A (en) | 2012-07-30 | 2012-07-30 | Measuring tool for turning radius of high-voltage cable |
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CN2012102702048A CN102778192A (en) | 2012-07-30 | 2012-07-30 | Measuring tool for turning radius of high-voltage cable |
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CN2012102702048A Pending CN102778192A (en) | 2012-07-30 | 2012-07-30 | Measuring tool for turning radius of high-voltage cable |
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Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103616302A (en) * | 2013-12-11 | 2014-03-05 | 上海电缆研究所 | Method and device for testing cracking resistance of thermoplastic sheath of nuclear power cable |
CN103837068A (en) * | 2012-11-23 | 2014-06-04 | 天津市宝坻供电有限公司 | Method for rapid measurement of cable turning radius |
CN104764385A (en) * | 2015-03-17 | 2015-07-08 | 国网辽宁省电力有限公司辽阳供电公司 | Drainage arc measurer |
CN104979780A (en) * | 2015-07-15 | 2015-10-14 | 中国能源建设集团安徽电力建设第一工程有限公司 | Severe cold area buried cable quick joint construction device |
KR200480238Y1 (en) | 2014-06-27 | 2016-04-28 | 삼성중공업 주식회사 | Apparatus for measuring curvature radius |
CN107339929A (en) * | 2017-07-31 | 2017-11-10 | 南京中车浦镇城轨车辆有限责任公司 | Cable Bending Radius survey tool |
CN107588709A (en) * | 2017-09-18 | 2018-01-16 | 国网山东省电力公司济南供电公司 | A kind of power cable radius of turn measuring scale |
CN108844430A (en) * | 2018-04-27 | 2018-11-20 | 北京汽车股份有限公司 | Fillet measuring device |
CN109470174A (en) * | 2018-08-16 | 2019-03-15 | 国网浙江桐乡市供电有限公司 | It is a kind of for controlling the device and its application method of Cable Bending Radius |
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 |
CN111735370A (en) * | 2020-07-02 | 2020-10-02 | 广东电网有限责任公司东莞供电局 | Auxiliary measuring device for elbow bend |
CN111928760A (en) * | 2020-08-19 | 2020-11-13 | 山西汾西重工有限责任公司 | Cable test tool |
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US3526965A (en) * | 1966-12-21 | 1970-09-08 | Dieter Haefele | Adjustable french curves for circular arcs |
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Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103837068A (en) * | 2012-11-23 | 2014-06-04 | 天津市宝坻供电有限公司 | Method for rapid measurement of cable turning radius |
CN103616302A (en) * | 2013-12-11 | 2014-03-05 | 上海电缆研究所 | Method and device for testing cracking resistance of thermoplastic sheath of nuclear power cable |
KR200480238Y1 (en) | 2014-06-27 | 2016-04-28 | 삼성중공업 주식회사 | Apparatus for measuring curvature radius |
CN104764385A (en) * | 2015-03-17 | 2015-07-08 | 国网辽宁省电力有限公司辽阳供电公司 | Drainage arc measurer |
CN104979780A (en) * | 2015-07-15 | 2015-10-14 | 中国能源建设集团安徽电力建设第一工程有限公司 | Severe cold area buried cable quick joint construction device |
CN107339929B (en) * | 2017-07-31 | 2019-11-08 | 南京中车浦镇城轨车辆有限责任公司 | Cable Bending Radius measuring tool |
CN107339929A (en) * | 2017-07-31 | 2017-11-10 | 南京中车浦镇城轨车辆有限责任公司 | Cable Bending Radius survey tool |
CN107588709A (en) * | 2017-09-18 | 2018-01-16 | 国网山东省电力公司济南供电公司 | A kind of power cable radius of turn measuring scale |
CN108844430A (en) * | 2018-04-27 | 2018-11-20 | 北京汽车股份有限公司 | Fillet measuring device |
CN109470174A (en) * | 2018-08-16 | 2019-03-15 | 国网浙江桐乡市供电有限公司 | It is a kind of for controlling the device and its application method of Cable Bending Radius |
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 |
CN111735370A (en) * | 2020-07-02 | 2020-10-02 | 广东电网有限责任公司东莞供电局 | Auxiliary measuring device for elbow bend |
CN111928760A (en) * | 2020-08-19 | 2020-11-13 | 山西汾西重工有限责任公司 | Cable test tool |
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Application publication date: 20121114 |