CN114414373B - Method for measuring pulling force of vertical rod pulling wire - Google Patents

Method for measuring pulling force of vertical rod pulling wire Download PDF

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CN114414373B
CN114414373B CN202210059287.XA CN202210059287A CN114414373B CN 114414373 B CN114414373 B CN 114414373B CN 202210059287 A CN202210059287 A CN 202210059287A CN 114414373 B CN114414373 B CN 114414373B
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measuring
point
line segment
stay wire
wire
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CN114414373A (en
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张翌晖
文立斌
王晓明
胡弘
黄志都
唐捷
黄萍力
颜芸芸
聂小勇
宋益
彭博雅
蒙宣任
郑琨
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Electric Power Research Institute of Guangxi Power Grid Co Ltd
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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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/0028—Force sensors associated with force applying means
    • G01L5/0033—Force sensors associated with force applying means applying a pulling force
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0001—Type of application of the stress
    • G01N2203/0003—Steady
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014—Type of force applied
    • G01N2203/0016—Tensile or compressive
    • G01N2203/0017—Tensile
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/026—Specifications of the specimen
    • G01N2203/0262—Shape of the specimen
    • G01N2203/0278—Thin specimens
    • G01N2203/028—One dimensional, e.g. filaments, wires, ropes or cables
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/06—Indicating or recording means; Sensing means
    • G01N2203/067—Parameter measured for estimating the property
    • G01N2203/0676—Force, weight, load, energy, speed or acceleration
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

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  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
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  • Immunology (AREA)
  • Pathology (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

The invention belongs to the technical field of power grid construction, and particularly relates to a method for measuring pulling force of a vertical rod pulling wire. The invention provides a method for rapidly and conveniently measuring the pull force of a pull wire in the construction process of a pull wire pole tower, which is simple and easy to operate, can be used for measuring in site construction, does not need to bring the pull wire back to a laboratory, improves the measurement efficiency, does not need to measure angles, only needs to measure the length of a line segment, effectively improves the rapidity and usability of the pull force measurement of the pull wire, and can meet the requirement of site use.

Description

Method for measuring pulling force of vertical rod pulling wire
Technical Field
The invention belongs to the technical field of power grid construction, and particularly relates to a method for measuring pulling force of a vertical rod pulling wire.
Background
In the prior art, the tension of a vertical rod stay wire is measured by placing the stay wire in a professional laboratory and using a tension tester. But the following disadvantages still exist: (1) the prior art cannot be implemented in an installation site. And (2) the existing equipment is inconvenient to use and expensive.
Disclosure of Invention
In order to solve the problems, the invention provides a method for measuring the tension of a vertical rod stay wire, which comprises the following specific technical scheme:
a method for measuring the pulling force of a vertical rod pulling wire comprises the following steps:
step S1, in the process of constructing the tower stay wire AB, at a point D distant from a stay wire root point B, dragging a distance to a point C along the vertical direction of the stay wire original position AB, and measuring and recording the tension F at the moment 1 Measuring the length x of a line segment BD from a stay wire root B point to a stay wire root D point, and measuring the length y of a line segment CD from a point C to a drop foot D point, wherein under the condition that the point D is not pulled, the total length l from a stay wire pole tower end A to a stay wire root B is measured;
step S2: let the pulling force along the line segment AC direction be F 2 The pulling force along the direction of the line segment BC is F 3 The included angle between the line segment AC and the stay wire AB is beta, and the included angle between the line segment BC and the stay wire AB is alpha; then:
F 1 ＝F 2 sinβ+F 3 sinα； (1)
F 2 cosβ＝F 3 cosα； (2)
Figure BDA0003477602900000011
Figure BDA0003477602900000012
step S3: calculated according to formulas (1) - (4):
Figure BDA0003477602900000021
Figure BDA0003477602900000022
Figure BDA0003477602900000023
step S4: repeating the steps S1-S3 to obtain the smallest pulling force F along the direction of the line segment BC 3 As the pull value of the pull wire.
Preferably, in the step S1, a spring balance or a tension meter is used to pull the wire original position AB.
The beneficial effects of the invention are as follows: the invention provides a method for rapidly and conveniently measuring the pull force of a pull wire in the construction process of a pull wire pole tower, which is simple and easy to operate, can be used for measuring in site construction, does not need to bring the pull wire back to a laboratory, improves the measurement efficiency, does not need to measure angles, only needs to measure the length of a line segment, effectively improves the rapidity and usability of the pull force measurement of the pull wire, and can meet the requirement of site use.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.
Fig. 1 is a measurement schematic of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be understood that the terms "comprises" and "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
As shown in fig. 1, a method for measuring the pulling force of a vertical rod pulling wire comprises the following steps:
step S1, in the process of constructing the tower stay wire AB, at a point D which is far from a point B at the root of the stay wire, a spring balance or a tension meter is adopted to draw a distance to a point C along the vertical direction of the original position AB of the stay wire, and the tension F at the moment is measured and recorded 1 Measuring the length x of a line segment BD from a stay wire root B point to a stay wire root D point, and measuring the length y of a line segment CD from a point C to a drop foot D point, wherein under the condition that the point D is not pulled, the total length l from a stay wire pole tower end A to a stay wire root B is measured; step S2: let the pulling force along the line segment AC direction be F 2 The pulling force along the direction of the line segment BC is F 3 The included angle between the line segment AC and the stay wire AB is beta, and the included angle between the line segment BC and the stay wire AB is alpha; then:
F 1 ＝F 2 sinβ+F 3 sinα； (1)
F 2 cosβ＝F 3 cosα； (2)
Figure BDA0003477602900000031
Figure BDA0003477602900000032
step S3: calculated according to formulas (1) - (4):
Figure BDA0003477602900000041
Figure BDA0003477602900000042
Figure BDA0003477602900000043
step S4: repeating the steps S1-S3 to obtain the smallest pulling force F along the direction of the line segment BC 3 As the pull value of the pull wire.
The invention adopts a limiting mode to approximately calculate the pulling force of the pull wire, and the pulling force F is under the condition that a spring balance or a tension meter is not adopted to pull the pull wire AB 3 And a pulling force F 2 Equal, repeatedly measure F 1 Minimum, F 3 The minimum value is approximately equal to F 2 Is a minimum of (2). The invention is simple and easy to operate, can be used for measuring in site construction, does not need to bring the stay wire back to a laboratory, improves the measuring efficiency, does not need to measure angles, only needs to measure the length of a line segment, effectively improves the rapidity and usability of the stay wire tension measurement, and can meet the requirement of site use.
Those of ordinary skill in the art will appreciate that the elements of the examples described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the elements of the examples have been described generally in terms of functionality in the foregoing description to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in this application, it should be understood that the division of units is merely a logic function division, and there may be other manners of division in practical implementation, for example, multiple units may be combined into one unit, one unit may be split into multiple units, or some features may be omitted.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention, and are intended to be included within the scope of the appended claims and description.

Claims (2)

1. The method for measuring the pulling force of the vertical rod is characterized by comprising the following steps of:
step S1, in the process of constructing the tower stay wire AB, at a point D distant from a stay wire root point B, dragging a distance to a point C along the vertical direction of the stay wire original position AB, and measuring and recording the tension F at the moment 1 Measuring the length x of a line segment BD from a stay wire root B point to a stay wire root D point, and measuring the length y of a line segment CD from a point C to a drop foot D point, wherein under the condition that the point D is not pulled, the total length l from a stay wire pole tower end A to a stay wire root B is measured;
step S2: let the pulling force along the line segment AC direction be F 2 The pulling force along the direction of the line segment BC is F 3 The included angle between the line segment AC and the stay wire AB is beta, and the included angle between the line segment BC and the stay wire AB is alpha; then:
F 1 ＝F 2 sinβ+F 3 sinα； (1)
F 2 cosβ＝F 3 cosα； (2)
Figure FDA0003477602890000011
Figure FDA0003477602890000012
step S3: calculated according to formulas (1) - (4):
Figure FDA0003477602890000013
Figure FDA0003477602890000014
Figure FDA0003477602890000015
step S4: repeating the steps S1-S3 to obtain the smallest pulling force F along the direction of the line segment BC 3 As the pull value of the pull wire.
2. The method for measuring the pulling force of the vertical rod pulling wire according to claim 1, wherein in the step S1, a spring balance or a tension meter is adopted to pull the pulling wire at the original position AB.
CN202210059287.XA 2022-01-19 2022-01-19 Method for measuring pulling force of vertical rod pulling wire Active CN114414373B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1308040A (en) * 1969-06-18 1973-02-21 Wikstrand & Berg Wibe Ab Arrangement in staying a telescopic tower by means of stay wires
EP0263542A1 (en) * 1986-09-05 1988-04-13 Philips Electronics Uk Limited Method of pull-testing wire bonds on a micro-miniature solid-state device
US5517864A (en) * 1994-05-31 1996-05-21 Seppa; Tapani O. Power transmission line tension monitoring system
CN102944349A (en) * 2012-12-07 2013-02-27 湖南省湘电锅炉压力容器检验中心有限公司 Method for adjusting and detecting tensile force of guyed tower
CH707558A2 (en) * 2013-02-12 2014-08-15 Maria Singerer Müller Cable tensile force measuring device has front portion and pulling element that are provided with outer enclosures, such that one of outer enclosure is surrounded against outer side of force sensor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1308040A (en) * 1969-06-18 1973-02-21 Wikstrand & Berg Wibe Ab Arrangement in staying a telescopic tower by means of stay wires
EP0263542A1 (en) * 1986-09-05 1988-04-13 Philips Electronics Uk Limited Method of pull-testing wire bonds on a micro-miniature solid-state device
US5517864A (en) * 1994-05-31 1996-05-21 Seppa; Tapani O. Power transmission line tension monitoring system
CN102944349A (en) * 2012-12-07 2013-02-27 湖南省湘电锅炉压力容器检验中心有限公司 Method for adjusting and detecting tensile force of guyed tower
CH707558A2 (en) * 2013-02-12 2014-08-15 Maria Singerer Müller Cable tensile force measuring device has front portion and pulling element that are provided with outer enclosures, such that one of outer enclosure is surrounded against outer side of force sensor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
基于索力优化的FAST柔索牵引并联机构的静力学分析;李辉;朱文白;潘高峰;;工程力学(第04期);全文 *

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