CN105841622A - Steel wire rope cable force test method and device - Google Patents
Steel wire rope cable force test method and device Download PDFInfo
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- CN105841622A CN105841622A CN201610289859.8A CN201610289859A CN105841622A CN 105841622 A CN105841622 A CN 105841622A CN 201610289859 A CN201610289859 A CN 201610289859A CN 105841622 A CN105841622 A CN 105841622A
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- steel wire
- measuring point
- wire rope
- measured
- cable force
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a steel wire rope cable force test method and device. The method comprises the steps that at least a first test point and a second test point are arranged on a steel wire rope to be tested along the length direction of the steel wire rope to be tested; a distance measuring device used for measuring the position of the first test point and the second test point is provided; the steel wire rope to be tested is starched, and the change of the position of the first test point and the second test point is measured in real time by utilizing the distance measuring device; the change of the length of the steel wire rope to be tested is calculated by utilizing the change of the position of the first test point and the second test point measured by the distance measuring device; and cable force of the steel wire rope to be tested is calculated according to the change of the length. The first test point and the second test point are arranged on the steel wire rope to be tested, and the change of the position of the first test point and the second test point is measured in real time by utilizing the distance measuring device in the stretching process of the steel wire rope to be tested so that the change of the cable force of the steel wire rope to be tested is calculated, and the problems that a strain gauge cannot be installed due to radial bending and torsion generated under the stretching state of the steel wire rope can be solved.
Description
Technical field
The present invention relates to a kind of method of testing, particularly relate to a kind of steel wire cable force test method and device.
Background technology
Steel wire rope is stretch-draw parts conventional in construction, is often used as cable wind rope and comes that drawknot is fixing to be built
Building structure, in construction, steel wire rope to provide big and stable Suo Li to keep the balance of structure and steady
Fixed, as construction safeguard.
In order to ensure that steel wire rope keeps stable Suo Li in stretching process, need real-time measuring steel wire rope
Suo Li, to avoid steel wire rope excessive and break due to Suo Li, cause huge engineering accident.At present
The mode of measurement Suo Li is commonly and arranges strain gauge on test specimen, directly observes examination from the reading of strain gauge
The actual Suo Li change of part.
But, axial tension the most not only can occur due to steel wire rope, it also occur that radially
Bending and torsion, if employing arranges strain gauge on a steel cord and comes measuring steel wire rope force, steel
The torsion of cord can cause strain gauge to be twisted off, and therefore, the steel wire rope in stretch-draw cannot simply use should
Become meter and measure its Suo Li change.
Summary of the invention
The technical problem to be solved is to provide a kind of steel rope's pull force without arranging strain gauge
Method of testing, it is possible to the in real time and exactly change of the Suo Li under tested steel cord tensile state.
For realizing above-mentioned technique effect, the invention discloses a kind of steel wire cable force test method, including
Step:
Length direction along steel wire rope to be measured arrange on described steel wire rope to be measured at least one first measuring point and
One second measuring point；
Range unit for measuring described first measuring point and the position of described second measuring point is provided；
Described steel wire rope to be measured is carried out stretch-draw, and utilizes described range unit to measure described first in real time
Measuring point and the change in location of described second measuring point；
Described first measuring point that described range unit measurement obtains is utilized to become with the position of described second measuring point
Change the length change being calculated described steel wire rope to be measured；
Suo Li according to steel wire rope to be measured described in described length change calculations.
Described steel wire cable force test method is further improved by, at the of described steel wire rope to be measured
One end arranges the first measuring point described in, and the second end at described steel wire rope to be measured arranges the second survey described in
Point.
Described steel wire cable force test method is further improved by, described first measuring point and described the
Two measuring points are the reflecting piece being fixed on described steel wire rope to be measured, and described range unit includes and described
The first laser range finder that one measuring point is corresponding and second laser range finder corresponding with described second measuring point.
Described steel wire cable force test method is further improved by, and is entering described steel wire rope to be measured
Before row stretch-draw, described range unit is utilized to measure the initial bit of described first measuring point and described second measuring point
Put, obtain the initial length of steel wire rope described to be measured between described first measuring point and described second measuring point
L0；After described steel wire rope to be measured is carried out stretch-draw, utilize described range unit to measure described first and survey
Point and the position of described second measuring point, obtain between described first measuring point and described second measuring point is described
Length L after the stretch-draw of steel wire rope to be measured1；Suo Li F according to the formula a described steel wire rope to be measured of calculating:
Wherein, E is the elastic modelling quantity of steel wire rope to be measured, and A is the area of section of steel wire rope to be measured.
Described steel wire cable force test method is further improved by, described steel wire rope stretch-draw to be measured in
Between lifting device and base surface；Before described lifting device carries out lifting construction, survey described first
Point and described second measuring point are fixed on described steel wire rope to be measured；Carry out promoting at described lifting device
During, described first laser range finder measures the change in location of described first measuring point in real time, and described
The change in location of described second measuring point measured in real time by dual-laser rangefinder.
The invention also discloses a kind of steel wire cable force test device, including at least one first measuring point and
Second measuring point, and for measuring the range unit of described first measuring point and the position of described second measuring point,
Described first measuring point and described second measuring point are arranged on described steel to be measured along the length direction of steel wire rope to be measured
In cord.
Described steel wire cable force test device is further improved by, the first of described steel wire rope to be measured
End arranges the first measuring point described in, and the second end at described steel wire rope to be measured arranges the second measuring point described in.
Described steel wire cable force test device is further improved by, described first measuring point and described the
Two measuring points are the reflecting piece being fixed on described steel wire rope to be measured, and described range unit includes and described
The first laser range finder that one measuring point is corresponding and second laser range finder corresponding with described second measuring point.
Described steel wire cable force test device is further improved by, described first laser range finder with
Described second laser range finder fixed mount is located at test site.
Described steel wire cable force test device is further improved by, described steel wire rope stretch-draw to be measured in
Between lifting device and base surface；Described first measuring point carries at described lifting device with described second measuring point
It is fixed on before Shenging on described steel wire rope to be measured；Described first laser range finder carrying at described lifting device
Measuring the change in location of described first measuring point during Shenging in real time, described second laser range finder is described
The lifting process of lifting device is measured the change in location of described second measuring point in real time.
Due to the fact that and have employed above technical scheme so that it is have the advantages that by treating
Survey and on steel wire rope, the first measuring point and the second measuring point are set, in the stretching process of steel wire rope to be measured, can profit
Measure the first measuring point and the change in location of the second measuring point with range unit in real time, thus be calculated to be measured
The Suo Li change of steel wire rope, arranges strain gauge to measure the method phase of Suo Li on a steel cord with traditional
Ratio, it is to avoid radially bend and reverse produced by steel wire rope under tensile state and strain gauge is caused damage,
The problem that impact is measured.Further, the first measuring point and the second measuring point are reflecting piece, and range unit is adopted
With laser range finder, the laser that laser range finder emits is irradiated in corresponding reflecting piece, then by
Reflecting piece reflection can laser range finder, then obtain in real time, distance signal accurately, convenient, fast
And measure accurately；By arranging the first measuring point and the second measuring point at the two ends of steel wire rope to be measured, be conducive to
Measure the entire length change of whole steel wire rope to be measured.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention a kind of steel wire cable force test device.
Fig. 2 is the flow chart of the present invention a kind of steel wire cable force test method.
Fig. 3 is the use view of the present invention a kind of steel wire cable force test device.
Detailed description of the invention
Below in conjunction with the accompanying drawings and detailed description of the invention the present invention is further detailed explanation.
Referring initially to shown in Fig. 1, one steel wire cable force test device of the present invention includes at least one first
Measuring point 11 and one second measuring point 12, and for measuring the first measuring point 11 and position of the second measuring point 12
The range unit put, the first measuring point 11 and the second measuring point 12 are solid along the length direction of steel wire rope 10 to be measured
It is located on steel wire rope 10 to be measured.In the stretching process of steel wire rope 10 to be measured, available range unit
Measure the first measuring point 11 and change in location of the second measuring point 12 in real time, calculate the reality of steel wire rope 10 to be measured
Border length change, thus calculate the steel wire rope 10 to be measured actual Suo Li under tensile state, in order to
Computational analysis contrasts, and controls the Suo Li of steel wire rope 10 to be measured, in order to avoid steel wire rope to be measured 10 carries excessive
And rupture.
In the present embodiment, use reflecting piece as the first measuring point being installed on steel wire rope 10 to be measured
11 and second measuring point 12, range unit includes first laser range finder 13 corresponding with the first measuring point 11
And second laser range finder 14 corresponding with the second measuring point 12, the first laser range finder 13 and second swashs
Optar 14 fixed mount is located at test site.In use, the first laser range finder 13 is directed at
In the first measuring point 11, for measuring the change in location of the first measuring point 11, by the second laser range finder 14
In alignment with the second measuring point 12, for measuring the change in location of the second measuring point 12.
Further, one first measuring point 11 can be set at the first end 101 of steel wire rope 10 to be measured,
Second end 102 of steel wire rope 10 to be measured arranges one second measuring point 12, utilizes and is arranged on steel wire rope to be measured
First measuring point 11 and second measuring point 12 at 10 end, two ends, coordinates the first laser range finder 13 and second
Laser range finder 14 measures the entire length change of whole steel wire rope 10 to be measured, in order to accurately grasp
The overall Suo Li change of whole steel wire rope 10 to be measured.
Coordinating shown in Fig. 2, one steel wire cable force test method of the present invention mainly comprises the steps:
S001: the length direction along steel wire rope to be measured arranges at least one first on described steel wire rope to be measured
Measuring point and one second measuring point；
S002: provide for measurement the first measuring point and the range unit of the position of the second measuring point；
S003: steel wire rope to be measured is carried out stretch-draw, and utilize range unit measure in real time the first measuring point with
The change in location of the second measuring point；
S004: utilize the change in location of the first measuring point that range unit measurement obtains and the second measuring point to calculate
Obtain the length change of steel wire rope to be measured；
S005: according to the Suo Li of length change calculations steel wire rope to be measured.
Wherein, the first measuring point and the second measuring point are the reflecting piece being fixed on steel wire rope to be measured, range finding dress
Put and include first laser range finder corresponding with the first measuring point and second Laser Measuring corresponding with the second measuring point
Distance meter, the first laser range finder and the second laser range finder fixed mount are located at test site.At steel to be measured
First end of cord arranges one first measuring point, and the second end at steel wire rope to be measured arranges one second measuring point,
It is easy to test the overall Suo Li of whole steel wire rope to be measured.
In step S005, the steel to be measured that the performance parameter of available steel wire rope to be measured self arrives with actual measurement
The length change of cord, according to steel rope's pull force computing formula, is calculated the Suo Li of steel wire rope to be measured,
Particularly as follows: before steel wire rope to be measured is carried out stretch-draw, utilize range unit to measure the first measuring point and second
The initial position of measuring point, obtains the initial length of steel wire rope to be measured between the first measuring point and the second measuring point
L0；After steel wire rope to be measured is carried out stretch-draw, range unit is utilized to measure the first measuring point and the second measuring point
Position, obtain length L after the stretch-draw of steel wire rope to be measured between the first measuring point and the second measuring point1；Root
Suo Li F according to formula a calculating steel wire rope to be measured:
Wherein, E is the elastic modelling quantity of steel wire rope to be measured, and A is the area of section of steel wire rope to be measured..
One steel wire cable force test method of the present invention by arrange on steel wire rope to be measured first measuring point and
Second measuring point, in the stretching process of steel wire rope to be measured, the first survey measured in real time by available range unit
Put the change in location with the second measuring point, thus be calculated the Suo Li change of steel wire rope to be measured, with tradition
The strain gauge that arranges on a steel cord compare to the method measuring Suo Li, it is to avoid steel wire under tensile state
Radially bend produced by rope and reverse and strain gauge is caused damage, the problem that impact is measured.Wherein,
First measuring point and the second measuring point are reflecting piece, and range unit uses laser range finder, and laser range finder is sent out
The laser shot out is irradiated in corresponding reflecting piece, then by reflecting piece reflection meeting laser range finder, continues
And obtain in real time, distance signal accurately, convenient, fast and measure accurately.Reflecting piece build is less,
Will not because of steel wire rope radially bend torsion and impaired, the range finding between laser range finder and reflecting piece is
Carried out by Laser Transmission, also will not be radially bent torsion effect by steel wire rope and normally measure.Enter
One step, by arranging the first measuring point and the second measuring point at the two ends of steel wire rope to be measured, be conducive to measuring
The entire length change of whole steel wire rope to be measured.
Referring again to shown in Fig. 3, for one steel wire cable force test device of the present invention at large-scale tree
The Construction State rotated and upgraded in construction, large-scale tree is mainly by a trunk 21 and be located at trunk
Many branches 22 on 21 form, and branch 22 issues the surrounding at trunk 21, and this operating mode is
Carry out large-scale tree on the floor face built up rotates and upgrades construction, owing to structure is complicated, and build
Huge and construction base surface is built floor face (such as basement roof face), and conventional high-altitude dissipates
Dress method and unit lifting method are not all suitable for complex large-sized tree, and employing rotates and upgrades method and can take
Obtain preferable techno-economic effect.The method that rotates and upgrades the most first is constructed big on built floor face
The trunk 21 of type tree, then on trunk 21, set up lifting frame body 23, then by large-scale tree-shaped
One end of the branch 22 of structure is hinged with trunk 21, at the other end and the lifting frame body 23 of branch 22
Top between draw and set raising cord 20, utilize lifting frame body 23 and raising cord 20 to rotate up boosted tree
Branch 22, makes branch 22 rotate up lifting around hinged joint.During the rotating and upgrading of branch,
To draw between the top of built floor face and lifting frame body 23 and to set guy steel wire rope 24, protect
Hold the balance of lifting frame body 23.Guy steel wire rope 24 needs to provide big and steady as construction safeguard
Fixed Suo Li.Therefore, in guy steel wire rope 24 lifting process real-time testing guy steel wire rope 24
Actual Suo Li, compare with computational analysis, in order to avoid the actual Suo Li of guy steel wire rope 24 is beyond specification model
Enclose.Differ relatively big due to the weight of each branch 22 again, need when rotating and upgrading the branch 22 of side,
Branch the most elevated for opposite side is strained on trunk 21, to avoid by dorsal funciculus steel wire rope 25
When promoting the branch 22 of side, the most elevated branch of opposite side can produce tilting moment, to guy steel
Cord causes extra Suo Li requirement.Same, in lifting process, need for dorsal funciculus steel wire rope
The actual Suo Li of 25 carries out implementing monitoring, to ensure compliance with Suo Li requirement.
Therefore, the steel wire cable force test device that can use the present invention is implemented to monitor large-scale tree
The actual Suo Li of the guy steel wire rope 24 rotated and upgraded in construction and dorsal funciculus steel wire rope 25, concrete
Construction process is as follows:
First, the top of the lifting frame body 23 on trunk 21 and the base surface (building constructed
Plate face) between draw and set guy steel wire rope 24, as construction safeguard.
Then, two branches 22 being positioned at trunk 21 both sides by a group are sling with light weight crane, by two trees
Second end of two branches 22, by hinge, is passed through raising cord by the first end of branch 22 and trunk 21
On 20 tensions lifting frame body 23 on trunk 21, two branches 22 are positioned at the weight of the branch on right side
Amount, much larger than the weight of the branch being positioned at left side, does not wait the lifting construction of weight, therefore, to two for double branches
Branch 22 takes asynchronous lifting scheme, the most first promotes the branch being positioned at right side, then lifting is positioned at left side
Branch, and promote be positioned at right side branch before in advance be positioned at left side branch 22 the second end with
Additionally draw between the bottom of trunk 21 and set dorsal funciculus steel wire rope 25.Above-mentioned guy steel wire rope 24 and dorsal funciculus steel
Cord 25 is to need to monitor the steel wire rope to be measured of Suo Li.
It is positioned at before right side is branch 22 in lifting, on guy steel wire rope 24 and dorsal funciculus steel wire rope 25 times
Hold fixed first measuring point 11, in guy steel wire rope 24 fixed second survey with the upper end of dorsal funciculus steel wire rope 25
Point 12, the first measuring point 11 and the second measuring point 12 are reflecting piece, and the reflecting piece of corresponding diverse location is arranged
The first corresponding laser range finder 13 and the second laser range finder 14.
Rotating and upgrading the branch 22 being positioned at right side, the first laser range finder measures the position of the first measuring point in real time
Putting change, the second laser range finder measures the change in location of the second measuring point in real time, respectively obtains guy steel
Cord 24 changes with the physical length of dorsal funciculus steel wire rope 25, and combines guy steel wire rope 24 and dorsal funciculus steel
The performance parameter of cord 25 is calculated the actual Suo Li of guy steel wire rope 24 and dorsal funciculus steel wire rope 25,
Contrast with computational analysis.
After the branch 22 being positioned at right side rotates and upgrades and puts in place, start to rotate and upgrade the branch being positioned at left side
22, same, the first laser range finder measures the change in location of the first measuring point, the second Laser Measuring in real time
Distance meter measures the change in location of the second measuring point in real time, respectively obtains guy steel wire rope 24 and dorsal funciculus steel wire rope
The physical length change of 25, and combine the performance parameter meter of guy steel wire rope 24 and dorsal funciculus steel wire rope 25
Calculate the actual Suo Li obtaining guy steel wire rope 24 with dorsal funciculus steel wire rope 25, contrast with computational analysis.
Above in association with drawings and Examples, the present invention is described in detail, ordinary skill in this area
The present invention can be made many variations example by personnel according to the above description.Thus, some in embodiment is thin
Joint should not constitute limitation of the invention, the present invention by the scope that defines using appended claims as
Protection scope of the present invention.
Claims (10)
1. a steel wire cable force test method, it is characterised in that include step:
Length direction along steel wire rope to be measured arrange on described steel wire rope to be measured at least one first measuring point and
One second measuring point；
Range unit for measuring described first measuring point and the position of described second measuring point is provided；
Described steel wire rope to be measured is carried out stretch-draw, and utilizes described range unit to measure described first in real time
Measuring point and the change in location of described second measuring point；
Described first measuring point that described range unit measurement obtains is utilized to become with the position of described second measuring point
Change the length change being calculated described steel wire rope to be measured；
Suo Li according to steel wire rope to be measured described in described length change calculations.
2. steel wire cable force test method as claimed in claim 1, it is characterised in that: treat described
The first end surveying steel wire rope arranges the first measuring point described in, and the second end at described steel wire rope to be measured is arranged
Second measuring point described in one.
3. steel wire cable force test method as claimed in claim 1 or 2, it is characterised in that: described
First measuring point and described second measuring point are the reflecting piece being fixed on described steel wire rope to be measured, described range finding
Device includes first laser range finder corresponding with described first measuring point and corresponding with described second measuring point
Second laser range finder.
4. steel wire cable force test method as claimed in claim 3, it is characterised in that to described
Before steel wire rope to be measured carries out stretch-draw, described range unit is utilized to measure described first measuring point and described second
The initial position of measuring point, obtains the steel wire described to be measured between described first measuring point and described second measuring point
The initial length L of rope0；After described steel wire rope to be measured is carried out stretch-draw, described range unit is utilized to survey
Measure the position of described first measuring point and described second measuring point, obtain described first measuring point and survey with described second
Length L after the stretch-draw of the steel wire rope described to be measured between point1；Described steel wire to be measured is calculated according to formula a
The Suo Li F of rope:
Wherein, E is the elastic modelling quantity of steel wire rope to be measured, and A is the area of section of steel wire rope to be measured.
5. steel wire cable force test method as claimed in claim 3, it is characterised in that: described to be measured
Steel wire rope stretch-draw is between lifting device and base surface；Before described lifting device carries out lifting construction,
Described first measuring point and described second measuring point are fixed on described steel wire rope to be measured；Dress is promoted described
Putting during promoting, described first laser range finder measures the position of described first measuring point in real time
Change, described second laser range finder measures the change in location of described second measuring point in real time.
6. a steel wire cable force test device, it is characterised in that: include at least one first measuring point and
Second measuring point, and for measuring the range unit of described first measuring point and the position of described second measuring point,
Described first measuring point and described second measuring point are arranged on described steel to be measured along the length direction of steel wire rope to be measured
In cord.
7. steel wire cable force test device as claimed in claim 6, it is characterised in that: described to be measured
First end of steel wire rope arranges the first measuring point described in, and the second end at described steel wire rope to be measured arranges one
Described second measuring point.
Steel wire cable force test device the most as claimed in claims 6 or 7, it is characterised in that: described
First measuring point and described second measuring point are the reflecting piece being fixed on described steel wire rope to be measured, described range finding
Device includes first laser range finder corresponding with described first measuring point and corresponding with described second measuring point
Second laser range finder.
9. steel wire cable force test device as claimed in claim 8, it is characterised in that: described first
Laser range finder and described second laser range finder fixed mount are located at test site.
10. steel wire cable force test device as claimed in claim 8, it is characterised in that: described to be measured
Steel wire rope stretch-draw is between lifting device and base surface；Described first measuring point and described second measuring point are in institute
State before lifting device promotes and be fixed on described steel wire rope to be measured；Described first laser range finder is described
The lifting process of lifting device is measured the change in location of described first measuring point, described second laser in real time
The change in location of described second measuring point measured in the lifting process of described lifting device in real time by rangefinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610289859.8A CN105841622A (en) | 2016-05-04 | 2016-05-04 | Steel wire rope cable force test method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610289859.8A CN105841622A (en) | 2016-05-04 | 2016-05-04 | Steel wire rope cable force test method and device |
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| CN105841622A true CN105841622A (en) | 2016-08-10 |
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| CN201610289859.8A Pending CN105841622A (en) | 2016-05-04 | 2016-05-04 | Steel wire rope cable force test method and device |
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| CN111366457A (en) * | 2020-02-23 | 2020-07-03 | 浙江大学 | A device and method for measuring long-term creep of steel cables |
| CN111366457B (en) * | 2020-02-23 | 2021-08-06 | 浙江大学 | A device and method for measuring long-term creep of steel cables |
| CN112304589A (en) * | 2020-11-02 | 2021-02-02 | 贵州钢绳股份有限公司 | Steel rope unlocking device and test method thereof |
| CN114689430A (en) * | 2022-03-24 | 2022-07-01 | 广州市极臻智能科技有限公司 | Elastic modulus measuring method and device, storage medium and guyed tower system |
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