CN106644751A - Guyed tower main post rigidity measurement experimental system and method - Google Patents
Guyed tower main post rigidity measurement experimental system and method Download PDFInfo
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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
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
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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
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/068—Special adaptations of indicating or recording means with optical indicating or recording means
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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
- G01N3/26—Investigating twisting or coiling properties
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- 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
- G01N2203/0021—Torsional
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- 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
- G01N2203/0023—Bending
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The invention discloses a guyed tower main post rigidity measurement experimental system and method. The system is used for measuring the bending rigidity and the torsional rigidity of a guyed tower main post and comprises the guyed tower main post, a laser transmitter and a telemeter rod, the guyed tower main post is horizontally placed, a fixed plate at the root of the guyed tower main post is fixed onto a vertically placed supporting frame, the supporting frame is kept still, a welding torque loading support is welded on one side of the top of the guyed tower main post, laser transmitted by the laser transmitter points to the telemeter rod, and deformation of the guyed tower main post before and after loading of bending load and torsional load is read on the telemeter rod. The system has the advantages of simple structure, simplicity and convenience in operation, convenience in reading, high testing precision and the like. The measurement method is simple in reading, high in sensitivity and simple and convenient in calculation process, and error accumulation in the calculating process is reduced.
Description
Technical field
The invention belongs to transmission line of electricity technical field, and in particular to a kind of for Guywire tower principal post rigidity in transmission line of electricity
The experimental system and method for measurement.
Background technology
China's energy is presented extremely unbalanced, contrary distribution situation with workload demand.Therefore, develop Large Copacity, it is trans-regional,
At a distance UHV transmission is inevitable requirement.Guywire tower has simple structure, easy construction, saves line corridor etc. because of it
Plurality of advantages is widely used in flat, the scarcely populated region of the physical features such as Northwestern Grassland, Gobi desert.
The first rank vibration of extra-high voltage Guywire tower principal post is twisting vibration, and torsional rigidity has decision to the intrinsic frequency of principal post
The effect of property.Therefore the principal post rigidity of research Guywire tower has important value.The principal post rigidity of Guywire tower can be divided into by characteristic
Bending stiffness and torsional rigidity, the at present research to principal post rigidity is mainly simulated by theory analysis and finite element modelling,
And experimental verification is not carried out to the correctness of analysis method, lack the support of experimental data, it is impossible to the accurate of analysis method
Property gives quantitative assessment.
At present, some are with regard to bending stiffness and the measurement apparatus of torsional rigidity, such as Patent No. CN 103499497
In disclose a kind of trolley line measurer for curve rigid, the device using the position adjustable on trolley line testboard force measuring machine
Structure, realizes that the bending stiffness to trolley line is measured.Because trolley line is flexible body, therefore cannot be used for the drawing with greater stiffness
Use in transmission tower.A kind of built-up gear torsional rigidity measuring instrument disclosed in Patent No. CN103776629, the device is by reversing
Device makes the gear and lower gear of the built-up gear being fixed on flat board deflect, and reads torsion by angle measurement unit
Gyration, moment of torsion during by reading corner and reverse built-up gear can calculate the torsional rigidity of built-up gear.It is this
The loading of torsional mode is not suitable for the Guywire tower of steel structural form, simultaneously because Guywire tower size is larger, and moment of flexure and torsion
Square acts on Guywire tower top simultaneously, and the mode that windup-degree is read using angle measurement unit is difficult to realize.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of Guywire tower principal post stiffness measurement experimental system and method, and this is
System composition is simple, and the features such as easy to operate, convenient reading, high measuring accuracy, measuring method reading is simple, sensitivity is higher, meter
Calculation process is easy, reduces the deviation accumulation of calculating process.
To solve above-mentioned technical problem, the technical solution used in the present invention is：A kind of Guywire tower principal post stiffness measurement reality
Check system, for measuring the bending stiffness and torsional rigidity of Guywire tower principal post, it is characterised in that：It is described including Guywire tower principal post
Guywire tower principal post horizontal positioned, the fixed plate of its Guywire tower principal post root is fixed on the bracing frame of vertical placement, bracing frame
Remain stationary, in Guywire tower principal post top side welding moment of torsion loading support；Also include generating laser and Sopwith staff, laser
The laser alignment Sopwith staff of transmitter transmitting, the deformation before and after Sopwith staff reads Guywire tower principal post load bending load and torsional load
Amount.
Such scheme is further qualified, when the bending stiffness of Guywire tower principal post is measured, at the top of Guywire tower principal post
Weight is placed, generating laser is arranged at Guywire tower principal post root, and the lower surface at the top of Guywire tower principal post is provided with annulus, its
Same position of the middle annulus with generating laser in Guywire tower principal post cross section, and internal radius are sharp with generating laser
Beam diameter is matched, and Sopwith staff is placed in Guywire tower principal post top front, and the laser beam Jing annulus of generating laser points to Sopwith staff
Scale.
Such scheme is further qualified, described generating laser is fixed on tripod.
Such scheme is further qualified, when the torsional rigidity of Guywire tower principal post is measured, on moment of torsion loading support
Weight is hung, the left and right sides that two generating lasers are fixed at the top of Guywire tower principal post, two Sopwith staffs are respectively placed in Guywire tower
Principal post top both sides, the laser beam of two laser transmitter projects is respectively directed to the scale of two Sopwith staffs.
Such scheme is further qualified, described moment of torsion loading support includes a horizon bar and a brace, its
One end of middle horizon bar is fixedly connected with the lower surface at the top of Guywire tower principal post, upper at the top of one end of brace and Guywire tower principal post
Surface connects, and the other end of brace is connected with the other end of horizon bar, and horizon bar and brace constitute stable triangle structure.
Such scheme is further qualified, the Guywire tower principal post includes the main material made using corner angle and oblique material,
Main material and oblique material are constituted without the truss for becoming slope, and truss root is welded in fixed plate using equal leg angle by reinforcement, fixed
Plate is installed on bracing frame by bolt.
A kind of Guywire tower principal post stiffness measurement method, it is characterised in that survey including bending stiffness measuring method and torsional rigidity
Amount method,
The concrete steps of bending stiffness measuring method：
1) the level meter Calibration of Laser transmitter level carried first with hand-held laser rangefinder, is placed on Guywire tower master
Post root, and be fixed on tripod so that laser is parallel with Guywire tower principal post, the annulus through at the top of Guywire tower principal post, and
Beat and arranging with the Sopwith staff in front of Guywire tower principal post, record the reading on now Sopwith staff；
2) weight is fixed on into Guywire tower principal post top, adjusts the knob of tripod so that the laser of laser transmitter projects is again
It is secondary and to beat on Sopwith staff, reading contrast in reading, with step 1 on record Sopwith staff through annulus, can obtain reading twice it
Difference a；3) using hand-held laser rangefinder measure generating laser root to annulus apart from b and generating laser top to tower
Chi apart from c, can be obtained by the principle of similitude, the displacement d=a × b/c on Guywire tower principal post top, now obtain be bracing wire
The bending deformation quantity on tower principal post top；
4) by the flexural deformation formula of girder-staff structureCan obtain, the bending stiffness of Guywire tower principal postWherein F
By applying weight weight, l be Guywire tower principal post it is not deformed before length, ω for Guywire tower principal post amount of deflection, ω's is concrete
Numerical value is the mean value of tri- calculated values of displacement d；
The concrete steps of torsional rigidity measurement method：
1) first two generating lasers are fixed on the left and right sides at the top of Guywire tower principal post, using hand-held laser rangefinder
The level meter Calibration of Laser transmitter level for carrying so that laser level is got on the Sopwith staff of Guywire tower principal post both sides；
2) weight is loaded on support by the moment of torsion that rope is fixed at the top of Guywire tower principal post, after Guywire tower principal post is stable,
Reading m and n on two Sopwith staffs of record；
3) horizontal range L between two Sopwith staffs is measured using hand-held laser rangefinder, then the torsion angle φ of Guywire tower principal post
Tangent value tan φ=(m-n)/L, and then try to achieve torsion angle φ=arctan ((m-n)/L)；
4) by the torsional deflection formula of thin walled bar structureObtain the torsional rigidity of Guywire tower principal postL is not for
The length of deformation Guywire tower principal post.
It is using the beneficial effect produced by above-mentioned technical proposal：The present invention makes according to the projection theory of simple, intuitive
Amplify bending, the torsional deflection amount for being difficult to measure with amplifying method, taking Sopwith staff difference of reading during measurement flexural deformation carries out similar op
Deflection can be bent；During measurement torsional deflection, because Guywire tower principal post is occurring bending deformation, bending is can be regarded as
Deformation and the superpositions of two kinds of torsional deflection deformation, therefore the reading on two Sopwith staffs is made the difference just can eliminate diastrophic shadow
Ring, while the horizontal position taken between two Sopwith staff reading differences in height and Sopwith staff is obtained torsion angle moved through trigonometric function operation.Therefore,
This measuring method reading is simple, sensitivity is higher, calculating process is easy, reduce calculating process deviation accumulation, can be from main root
Multiplication factor is adjusted according to experiment condition.These features allow to the flexion torsion deformation of fast and convenient acquisition Guywire tower principal post
Amount.
Description of the drawings
With reference to the accompanying drawings and detailed description the present invention is further detailed explanation.
Fig. 1 is Guywire tower structural representation；
Fig. 2 is the structural representation that moment of torsion loads support；
Fig. 3 is bending stiffness measurement experimental system structural representation；
Fig. 4 is torsional rigidity measurement experimental system structural representation；
Wherein：1st, moment of torsion loading support, 2, Guywire tower principal post, 3, fixed plate, 4, Sopwith staff, 5, bracing frame, 6, generating laser, 7,
Annulus.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is further illustrated：
Guywire tower principal post stiffness measurement experimental system in the present invention include Guywire tower principal post 2 and by hand-held laser rangefinder,
The measuring system of generating laser 6, tripod and the composition of Sopwith staff 4.
The structural representation of Guywire tower principal post 2 of the present invention is as shown in figure 1, according to existing extra-high voltage Guywire tower transmission line of electricity work
Journey is designed, and Guywire tower principal post 2 is reduced to without the truss for becoming slope, and truss structure is by moment of torsion loading support 1, the and of Guywire tower principal post 2
Fixed plate 3 is constituted.The main material of the Guywire tower principal post 1 and oblique material adopt the Q235 equal leg angles of L25 × 3, in every main material tower
The two ends that the through hole of diameter 10mm, remaining position of main material and all oblique materials are designed as at pin are both designed as the through hole of diameter 8mm.
The Q235 equal leg angles of four L30 × 3 of angle cleat design are welded on fixation by reinforcement at truss model and fixed plate 3
On plate 3.Fixed plate 3 is horizontally arranged at the support of vertical placement by the hole of the 4 of bottom a diameter of 18mm using bolt connection
On frame 5.Guywire tower principal post 2 is bolted and is horizontally arranged on bracing frame 5, is convenient for loading.
As shown in Figure 2, moment of torsion loading support 1 is provided with, a horizon bar and a brace, wherein level is specifically included
One end of bar is fixedly connected with the lower surface at the top of Guywire tower principal post 2, the upper surface at the top of one end of brace and Guywire tower principal post 2
Connect, and the other end of brace is connected with the other end of horizon bar, and horizon bar and brace constitute stable triangle structure.Moment of torsion
Load support 1 to realize on the premise of keeping original load constant, torque multiplication so that torsional deflection is more easy to measurement.
Hand-held laser rangefinder in the present invention, it is ensured that parallel with not deformed tower section, is fixed on tripod, during measurement
Adjustment loading before and after launch laser beat on Sopwith staff 4 through same point, as lasing light emitter and realize measurement Laser emission at arrive
The effect of the distance of Sopwith staff 4 and diastrophic amplification quantity.
As shown in Figure 3, when bending stiffness measurement laser module is installed, the level carried using hand-held laser rangefinder
Instrument is adjusted generating laser 6 so that the laser of the transmitting of generating laser 6 and the tower section keeping parallelism of no-load, uses
Camera tripod is fixed, while Sopwith staff 4 is vertically placed in the front of Guywire tower principal post 2 of horizontal positioned, for measuring
The flexural deformation of Guywire tower principal post 2.
As shown in Figure 4, similar to the installation of bending stiffness device when torsional rigidity measurement laser module is installed, in bracing wire
The left and right sides at the top of tower principal post 2 is horizontally mounted a laser generator 6, and Guywire tower is caused because loading moment of torsion for offsetting
The flexural deformation that principal post 2 occurs, while laying two Sopwith staffs 4 in the top both sides of Guywire tower principal post 2.
The method for being curved stiffness measurement using the measurement experimental system of the present invention is comprised the following steps：
1) annulus 7 is fixed on the outside of the top angle of Guywire tower principal post 2, its internal diameter is more slightly larger than laser, using Handheld laser
The level of level meter Calibration of Laser transmitter 6 that rangefinder is carried, is fixed on tripod so that laser passes through annulus 7 dozens
On Sopwith staff 4, the reading on now Sopwith staff 4 is recorded；
2) weight is lifted using hydraulic forklift, the weight of constant weight is fixed on into tower section top by rope, then passed through
Load is slowly loaded into the top of Guywire tower principal post 2 with the horizontal load under simulating actual conditions for the hydraulic system of hydraulic forklift.
The knob of adjustment tripod so that the laser of the transmitting of generating laser 6 again passes through annulus 7 dozens on Sopwith staff, reads on Sopwith staff 4
Reading and the contrast of reading before can obtain difference a of reading twice；
3) using the hand-held laser rangefinder measurement top of generating laser 6 to the top annulus of Guywire tower principal post 2 is apart from b and swashs
Optical transmitting set top, apart from c, can be obtained to Sopwith staff by the principle of similitude, the displacement d=a × b/c on Guywire tower principal post top.This
When obtain be Guywire tower principal post top bending deformation quantity；
4) by the flexural deformation formula of girder-staff structure in the mechanics of materialsCan obtain, the bending stiffness of Guywire tower principal postWherein F by applying weight weight, l be Guywire tower principal post (2) it is not deformed before length, ω be Guywire tower master
The amount of deflection of post (2), the concrete numerical value of ω is the mean value of tri- calculated values of displacement d.
The method for carrying out torsional rigidity measurement using the measurement experimental system of the present invention is comprised the following steps：
1) level of level meter Calibration of Laser transmitter 6 carried using hand-held laser rangefinder, is fixed on Guywire tower principal post 2 and is pushed up
The left and right sides in portion so that laser level is got on the Sopwith staff 4 of both sides；
2) weight is lifted using hydraulic forklift, the weight of constant weight is fixed on into the moment of torsion loading at the top of tower section by rope
On support 1, with reach load it is constant on the premise of amplify the moment of torsion that Guywire tower principal post 2 is subject to.Adjust the hydraulic pressure system of hydraulic forklift
Load is slowly loaded into system the moment of torsion that the top of Guywire tower principal post 2 is subject to the drop-down transmission tower principal post of simulating actual conditions, treats reading
Reading m, the n on Sopwith staff is recorded after stable；
3) horizontal range L between two Sopwith staffs 4 is measured using hand-held laser rangefinder, then the tangent value tan φ=(m- of torsion angle
N)/L, and then try to achieve torsion angle φ=arctan ((m-n)/L)；
4) by the torsional deflection formula of thin walled bar structure in the mechanics of materialsObtain the torsional rigidity of Guywire tower principal postL is the length of not deformed Guywire tower principal post.
The concrete calculated examples of the present invention are given below.According to experimental design and various equipment installation situation and use
Points for attention, slowly by weight be carried in tower section top.Read registration of the laser on Sopwith staff, the following (G=of experimental result
9.8N/kg)：
(1). data under Guywire tower principal post flexural deformation
In crooked experiment, horizontal range L1 and laser emission point for first measuring laser emission point to Sopwith staff is to Guywire tower principal post top
Between horizontal range L2., apart from duplicate measurements three times, data are followed successively by for each：8.810、8.803、8.802、2.398、
2.407、2.413.L1=8.805m after averaging, L2=2.406m.The phase of similar triangles is assured that according to L1, L2
Like than.
In crooked experiment, the related measurement data before and after different loads loading on single-column Guywire tower principal post is as shown in table 1：
Table 1
In crooked experiment, registration of the laser on Sopwith staff is read and has calculated before and after loading that registration is poor on Sopwith staff.According to measurement
Principle, using the similar relation of triangle the bending displacement on single-column Guywire tower principal post top can be calculated.Specific formula for calculation is：
In formula：ω：The amount of deflection of Guywire tower principal post；
Δs：Registration before and after loading on Sopwith staff is poor；
L1、L2：The horizontal range that laser emission point is arrived respectively between Sopwith staff, Guywire tower principal post top.
Amount of deflection is corresponding be exactly Guywire tower principal post top displacement, take the mean value of three calculated values as Guywire tower principal post
Amount of deflection under the load.
Deflection data result is as shown in table 2.
Table 2
Tip displacement is amount of deflection of the single-column Guywire tower principal post under respective loads in crooked experiment.Measurement result is summarized as follows table
Shown in 3：Table 3
(2) Guywire tower principal post data under torsional deformation
In torsion test, horizontal range L3 between two Sopwith staffs vertically placed first is measured.Duplicate measurements three times, data are successively
For：4423mm、4421mm、4416mm.Average L3=4420mm.
In crooked experiment, the related measurement data before and after different loads loading on single-column Guywire tower principal post is as shown in table 4：
Table 4
In torsion test, it is inclined that the angle of the laser deflection that laser module level sends can be approximated to be whole Guywire tower principal post top
The angle for turning.The data of measurement are the differences of laser registration on Sopwith staff of both sides.In experiment, because laser level sends, only
Horizontal range L between two Sopwith staffs need to be measured3Just can utilize triangle relation by reverse angle calculation out.Concrete meter
Calculate formula：
In formula：The arc tangent of torsion angle；
L3：Horizontal range between two Sopwith staffs；
Δs1、Δs2：The registration loaded on former and later two Sopwith staffs is poor.
It can be seen from experimental design to the design of measurement：The angle for calculating is torsion angle.Take three calculated values
Torsion angle of the mean value as single-column Guywire tower principal post under the load.
Torsion test data processing is as shown in Table 5,6：
Table 5
Table 6
Three Comparative results
Amount of deflection has been carried out for experimental design and simplifying for torsion angle has calculated and finite element analysis.Now by the single-column under three kinds of methods
The amount of deflection and torsion angle of Guywire tower principal post is contrasted.Comparing result is as shown in table 7,8.
Table 7
Table 8
Can be seen that to simplify to calculate according to above-mentioned two table and be more or less the same with the result of finite element analysis.In experimental result torsion angle and
Other two result is more or less the same, and meets expection.
In sum, in the present invention measuring method reading is simple, sensitivity is higher, calculating process is easy, reduces fortune
The deviation accumulation of calculation process, can independently according to experiment condition adjust multiplication factor.These features allow to fast and convenient obtaining
Take the flexion torsion deflection of Guywire tower principal post.
Claims (7)
1. a kind of Guywire tower principal post stiffness measurement experimental system, for measuring the bending stiffness and torsional rigidity of Guywire tower principal post,
It is characterized in that：Including Guywire tower principal post (2), described Guywire tower principal post (2) horizontal positioned, its Guywire tower principal post (2) root
Fixed plate (3) be fixed on the bracing frame (5) of vertical placement, bracing frame (5) is remained stationary, in Guywire tower principal post (2)
Top side welding moment of torsion loading support (1)；Also include generating laser (6) and Sopwith staff (4), generating laser (6) transmitting
Laser alignment Sopwith staff (4), the deflection before and after Sopwith staff (4) reads Guywire tower principal post (2) load bending load and torsional load.
2. Guywire tower principal post stiffness measurement experimental system according to claim 1, it is characterised in that：In measurement Guywire tower master
During the bending stiffness of post, weight is placed at Guywire tower principal post (2) top, generating laser (6) is arranged at Guywire tower principal post (2) root
Portion, the lower surface at the top of Guywire tower principal post (2) is provided with annulus (7), and wherein annulus (7) and generating laser (6) are in drawing
The same position of transmission tower principal post (2) cross section, and annulus (7) internal diameter matches with the lasing beam diameter of generating laser (6), tower
Chi (4) is placed in Guywire tower principal post (2) top front, and laser beam Jing annulus (7) of generating laser (6) points to Sopwith staff (4)
Scale.
3. Guywire tower principal post stiffness measurement experimental system according to claim 2, it is characterised in that：Described Laser emission
Device (6) is fixed on tripod.
4. Guywire tower principal post stiffness measurement experimental system according to claim 1, it is characterised in that：In measurement Guywire tower master
During the torsional rigidity of post, weight is hung on moment of torsion loading support (1), two generating lasers (6) are fixed on Guywire tower principal post
(2) left and right sides at the top of, two Sopwith staffs (4) are respectively placed in Guywire tower principal post (2) top both sides, two generating lasers (6)
The laser beam of transmitting is respectively directed to the scale of two Sopwith staffs (4).
5. Guywire tower principal post stiffness measurement experimental system according to claim 4, it is characterised in that described moment of torsion loading
Support (1) includes a horizon bar and a brace, and wherein one end of horizon bar is consolidated with the lower surface at the top of Guywire tower principal post (2)
Fixed connection, one end of brace is connected with the upper surface at the top of Guywire tower principal post (2), and the other end of brace is another with horizon bar
One end connects, and horizon bar and brace constitute stable triangle structure.
6. the Guywire tower principal post stiffness measurement experimental system according to any one in claim 1-5, it is characterised in that institute
State main material and oblique material, main material and oblique material truss of the composition without change slope that Guywire tower principal post (2) includes being made using corner angle, truss
Root is welded in fixed plate (3) using equal leg angle by reinforcement, and fixed plate (3) is installed on bracing frame (5) by bolt
On.
7. a kind of Guywire tower principal post stiffness measurement method, it is characterised in that including bending stiffness measuring method and torsional rigidity measurement
Method,
The concrete steps of bending stiffness measuring method：
1) level meter Calibration of Laser transmitter (5) level carried first with hand-held laser rangefinder, is placed on bracing wire
Tower principal post (2) root, and be fixed on tripod so that laser is parallel with Guywire tower principal post (2), through Guywire tower principal post (2)
On the annulus (7) at top, and the Sopwith staff (4) beaten in front of setting with Guywire tower principal post (2), the reading on now Sopwith staff (4) is recorded
Number；
2) weight is fixed on into Guywire tower principal post (2) top, adjusts the knob of tripod so that generating laser (6) transmitting
Laser again passes through annulus (7), and beats on Sopwith staff (4), records reading contrast in reading, with step 1 on Sopwith staff (4), can be with
Obtain difference a of reading twice；
3) using hand-held laser rangefinder generating laser (6) root is measured to annulus (7) apart from b and generating laser
(6) top can be obtained to Sopwith staff apart from c by the principle of similitude, the displacement d=a × b/c on Guywire tower principal post (2) top, now
What is obtained is the bending deformation quantity on Guywire tower principal post (2) top；
4) by the flexural deformation formula of girder-staff structureCan obtain, the bending stiffness of Guywire tower principal post (2)Wherein
F by applying weight weight, l be Guywire tower principal post (2) it is not deformed before length, ω for Guywire tower principal post (2) amount of deflection, ω
Concrete numerical value for tri- calculated values of displacement d mean value；
The concrete steps of torsional rigidity measurement method：
1) first two generating lasers (5) are fixed on the left and right sides at the top of Guywire tower principal post (2), using Handheld laser
Level meter Calibration of Laser transmitter (5) level that rangefinder is carried so that laser level is got to positioned at Guywire tower principal post (2) both sides
Sopwith staff (4) on；
2) weight is loaded on support (1) by the moment of torsion that rope is fixed at the top of Guywire tower principal post (2), treats Guywire tower principal post
(2) after stable, the reading m and n on two Sopwith staffs (4) is recorded；
3) horizontal range L between two Sopwith staffs (4), the then torsion of Guywire tower principal post (2) are measured using hand-held laser rangefinder
AngleTangent valueAnd then try to achieve torsion angle4) by the torsion of thin walled bar structure
Turn deformation formulaObtain the torsional rigidity of Guywire tower principal post (2)L is not deformed Guywire tower principal post (2)
Length.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107702980A (en) * | 2017-11-08 | 2018-02-16 | 昆明理工大学 | Modulus of elasticity, bending rigidity Multifunction composite experiment device |
| CN110849565A (en) * | 2019-12-19 | 2020-02-28 | 中国人民解放军陆军工程大学 | Universal device for space truss structure torsion experiment and use method |
| CN111006948A (en) * | 2019-11-14 | 2020-04-14 | 安徽合力股份有限公司 | Flexibility test device of fork frame intensity |
| CN112903475A (en) * | 2019-11-19 | 2021-06-04 | 中国商用飞机有限责任公司 | Device and method for testing bending and twisting strength of I-shaped stringer test piece |
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| RU2745947C1 (en) * | 2020-07-02 | 2021-04-05 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Московский автомобильно-дорожный государственный технический университет (МАДИ)" | Method for determining bending rigidity of polymeric composite materials under different temperature conditions |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203178145U (en) * | 2013-03-28 | 2013-09-04 | 北京理工大学 | Automatic tester for torsional rigidity |
| CN103674730A (en) * | 2013-12-20 | 2014-03-26 | 中天科技海缆有限公司 | Bending rigidity testing device |
| CN203561562U (en) * | 2013-09-25 | 2014-04-23 | 浙江工业大学 | Bending rigidity testing device |
| CN203858164U (en) * | 2014-04-24 | 2014-10-01 | 苏州九正电工有限公司 | Short-circuit impact and bending testing system for outgoing line sleeve of power generator |
| CN203965260U (en) * | 2014-06-25 | 2014-11-26 | 中国海洋石油总公司 | The bending stiffness of flexible pipe and torsion rigidity measurer |
| CN204694570U (en) * | 2015-03-06 | 2015-10-07 | 阿勒泰地区特种设备检验检测所 | Crane Static stiffness laser measuring apparatus |
| CN205209764U (en) * | 2015-10-30 | 2016-05-04 | 江苏联合传动设备有限公司 | Robot joint reduction gear rigidity test system that topples based on laser survey |
-
2016
- 2016-10-13 CN CN201610891175.5A patent/CN106644751B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203178145U (en) * | 2013-03-28 | 2013-09-04 | 北京理工大学 | Automatic tester for torsional rigidity |
| CN203561562U (en) * | 2013-09-25 | 2014-04-23 | 浙江工业大学 | Bending rigidity testing device |
| CN103674730A (en) * | 2013-12-20 | 2014-03-26 | 中天科技海缆有限公司 | Bending rigidity testing device |
| CN203858164U (en) * | 2014-04-24 | 2014-10-01 | 苏州九正电工有限公司 | Short-circuit impact and bending testing system for outgoing line sleeve of power generator |
| CN203965260U (en) * | 2014-06-25 | 2014-11-26 | 中国海洋石油总公司 | The bending stiffness of flexible pipe and torsion rigidity measurer |
| CN204694570U (en) * | 2015-03-06 | 2015-10-07 | 阿勒泰地区特种设备检验检测所 | Crane Static stiffness laser measuring apparatus |
| CN205209764U (en) * | 2015-10-30 | 2016-05-04 | 江苏联合传动设备有限公司 | Robot joint reduction gear rigidity test system that topples based on laser survey |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107702980A (en) * | 2017-11-08 | 2018-02-16 | 昆明理工大学 | Modulus of elasticity, bending rigidity Multifunction composite experiment device |
| CN111006948A (en) * | 2019-11-14 | 2020-04-14 | 安徽合力股份有限公司 | Flexibility test device of fork frame intensity |
| CN111006948B (en) * | 2019-11-14 | 2024-06-04 | 安徽合力股份有限公司 | Flexible test device for strength of fork frame |
| CN112903475A (en) * | 2019-11-19 | 2021-06-04 | 中国商用飞机有限责任公司 | Device and method for testing bending and twisting strength of I-shaped stringer test piece |
| CN110849565A (en) * | 2019-12-19 | 2020-02-28 | 中国人民解放军陆军工程大学 | Universal device for space truss structure torsion experiment and use method |
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