CN109443673A - Deflection measuring apparatus and its measurement method - Google Patents
Deflection measuring apparatus and its measurement method Download PDFInfo
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- CN109443673A CN109443673A CN201811551018.5A CN201811551018A CN109443673A CN 109443673 A CN109443673 A CN 109443673A CN 201811551018 A CN201811551018 A CN 201811551018A CN 109443673 A CN109443673 A CN 109443673A
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- 238000000691 measurement method Methods 0.000 title claims abstract description 13
- 238000012545 processing Methods 0.000 claims abstract description 43
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 238000005259 measurement Methods 0.000 description 12
- 238000005452 bending Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 3
- 230000005483 Hooke's law Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003862 health status Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
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- 238000012360 testing method Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
- G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0008—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings of bridges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
- G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
- G01M5/0058—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems of elongated objects, e.g. pipes, masts, towers or railways
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- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The present invention provides a kind of deflection measuring apparatus and its measurement methods, it is related to the technical field of component deflection metrology, including component to be measured, fixed part, connecting rope, device for measuring force and data processing equipment, it is set as multiple by fixed part, multiple fixed parts are all set on tested surface, device for measuring force is set between two fixed parts of arbitrary neighborhood, the both ends of device for measuring force are connect by connecting rope with two fixed parts, device for measuring force is electrically connected with data processing equipment, member bends to be measured drive connecting rope to stretch, device for measuring force measures the pulling force of connecting rope, and pulling force information is transferred in data processing equipment, data processing equipment reads pulling force information, and calculate the mid-span deflection of component to be measured.
Description
Technical field
The present invention relates to component deflection metrology technical fields, more particularly, to a kind of deflection measuring apparatus and its measurement side
Method.
Background technique
Amount of deflection refers to that the axis of structural elements or middle face cause the displacement of the lines perpendicular to axis or middle face direction due to bending；
The amount of deflection of slender body (such as beam or column) refers in deformation on its axis each point displacement in axis normal plane at this point；
The amount of deflection of thin plate or shell refers to the displacement of each point on middle face at this point on normal vector of middle surface；For flexural member, by forever
Long or variable load effect, can generate certain amount of deflection, and when its value is more than certain feasible value, which is at bullet modeling
Sexual stage, or even influence the safety of structure；So amount of deflection is to evaluate the important parameter of flexural member health status, it is supervised
Survey is highly desirable.
Currently, having dial gauge mensuration, level gage measurement method, total station survey to the measurement method of flexural member amount of deflection
Method, GPS mensuration etc.；Dial gauge mensuration is to be put the shift value of institute's detection means specific location using gear drive
Greatly, and the straight line back and forth movement that will test is converted into the rotary motion of pointer, to indicate its shift value；Level gage measurement method is first
Permanent datum mark is first selected, and then measures the difference in height on component to be measured between specified point and datum mark；Total station survey method
It is similar with level gage measurement method with GPS mensuration.
But the operating process of the above measurement method is comparatively laborious, measurement process time-consuming is longer, and measurement efficiency is low, and
Measurement accuracy is difficult to ensure.
The information disclosed in the background technology section is intended only to deepen the understanding to general background technology of the present invention, without
It should be considered as recognizing or implying in any form that the information constitutes the prior art known in those skilled in the art.
Summary of the invention
The purpose of the present invention is to provide a kind of deflection measuring apparatus and its measurement methods, to alleviate existing deflection metrology
The operating process of device and method is cumbersome, the low technical problem of measurement efficiency.
In order to solve the above technical problems, technical solution provided by the invention is:
At deflection measuring apparatus provided by the invention, including component to be measured, fixed part, connecting rope, device for measuring force and data
Manage device；
Tested surface is provided on component to be measured, fixed part is set as multiple, and multiple fixed parts are all set on tested surface, surveys
Power device is set as multiple, and device for measuring force is set between two fixed parts of arbitrary neighborhood, and the both ends of device for measuring force pass through company
Splicing is connect with two fixed parts, and device for measuring force is electrically connected with data processing equipment, member bends to be measured, so that connecting rope is drawn
It stretches, device for measuring force is used to measure the pulling force of connecting rope, and this pulling force information is transferred in data processing equipment, data processing dress
It sets and reads pulling force information, and calculate the mid-span deflection of component to be measured by the formula of setting.
Further, deflection measuring apparatus further includes support frame；
Support frame is set as two, and two support frames are respectively arranged on the both ends of component to be measured, and two support frames are equal
It is connect with component to be measured.
Further, height adjuster is provided on support frame；
Height adjuster is used to adjust the height of support frame, is wanted with meeting to the support of the different height of component to be measured
It asks.
Further, support frame further includes support plate；
Support plate is connect with height adjuster, and the both ends of component to be measured are connect with support plate respectively.
Further, level meter is provided in support plate；
Level meter is set as multiple, and multiple level meters are all set in support plate, and level meter is used to detect the water of support plate
Level state.
Further, deflection measuring apparatus further includes load-bearing device；
Load-bearing device is connect with component to be measured, so that component to be measured is bent in the axial direction.
Further, load-bearing device is set as multiple, and multiple load-bearing devices are connect with component to be measured.
Further, device for measuring force is set as spring tension meter.
Further, connecting rope is set as stretch cord.
The measurement method of deflection measuring apparatus provided by the invention, comprising the following steps:
Multiple fixed parts are fixed on tested surface；
The both ends of device for measuring force are connected by two fixed parts of connecting rope and arbitrary neighborhood, so that arbitrary neighborhood two
Device for measuring force is provided between fixed part；
Moment of flexure is applied to component to be measured, makes to connect rope elongation, device for measuring force detects the pulling force of connecting rope, and by pulling force information
It is transferred in data processing equipment；
Data processing equipment calculates the displacement of spring in device for measuring force according to pulling force, and calculate component to be measured across
Middle amount of deflection.
In conjunction with above technical scheme, the beneficial effect that the present invention reaches is:
At deflection measuring apparatus provided by the invention, including component to be measured, fixed part, connecting rope, device for measuring force and data
Manage device；Tested surface is provided on component to be measured, fixed part is set as multiple, and multiple fixed parts are all set on tested surface, surveys
Power device is set as multiple, and device for measuring force is set between two fixed parts of arbitrary neighborhood, and the both ends of device for measuring force pass through company
Splicing is connect with two fixed parts, and device for measuring force is electrically connected with data processing equipment, member bends to be measured, so that connecting rope is drawn
It stretches, device for measuring force is used to measure the pulling force of connecting rope, and this pulling force information is transferred in data processing equipment, data processing dress
It sets and reads pulling force information, and calculate the mid-span deflection of component to be measured by the formula of setting；It is set as multiple by fixed part, it is more
A fixed part is all set on tested surface, and device for measuring force is set between two fixed parts of arbitrary neighborhood, the both ends of device for measuring force
It is connect by connecting rope with two fixed parts, device for measuring force is electrically connected with data processing equipment, and member bends to be measured drive connection
Rope stretches, and device for measuring force measures the pulling force of connecting rope, and pulling force information is transferred in data processing equipment, data processing equipment
Pulling force information is read, and calculates the mid-span deflection of component to be measured.
Other features and advantages of the present invention will illustrate in the following description, also, partly become from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention are in specification, claims
And structure specifically noted by attached drawing is achieved and obtained.
Detailed description of the invention
Illustrate the specific embodiment of the invention or technical solution in the prior art in order to clearer, it below will be to specific
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it is clear that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the overall structure diagram under the first state of measuring device provided in an embodiment of the present invention；
Fig. 2 is the overall structure diagram under the second state of measuring device provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram that measuring device provided in an embodiment of the present invention has support frame；
Fig. 4 is the structural schematic diagram of the support frame in measuring device provided in an embodiment of the present invention.
Icon: 100- component to be measured；200- fixed part；The first fixed part of 210-；The second fixed part of 220-；230- third is solid
Determine portion；300- connecting rope；The first connecting rope of 310-；The second connecting rope of 320-；400- device for measuring force；The first device for measuring force of 410-；
The second device for measuring force of 420-；500- data processing equipment；600- support frame；610- supporting leg；620- height adjuster；630-
Support plate；640- level meter；700- load-bearing device.
Specific embodiment
Clear, complete description is carried out to technical solution of the present invention below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that such as occur term " center ", "upper", "lower", "left", "right",
"vertical", "horizontal", "inner", "outside" etc., indicated by orientation or positional relationship be orientation based on the figure or position
Relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have
There is specific orientation, be constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, as occurred
Term " first ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " peace such as occur
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or one
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
Fig. 1 is the overall structure diagram under the first state of measuring device provided in this embodiment, wherein first state
It is in a horizontal state for component to be measured；Fig. 2 is the overall structure diagram under the second state of measuring device provided in this embodiment,
Wherein, it is in bending state that the second state, which is component to be measured,；Fig. 3 is the structure that measuring device provided in this embodiment has support frame
Schematic diagram；Fig. 4 is the structural schematic diagram of the support frame in measuring device provided in this embodiment.
As shown in Figs 1-4, present embodiments provide a kind of deflection measuring apparatus, including component to be measured 100, fixed part 200,
Connecting rope 300, device for measuring force 400 and data processing equipment 500；Tested surface is provided on component 100 to be measured, fixed part 200 is set
It is set to multiple, multiple fixed parts 200 are all set on tested surface, and device for measuring force 400 is set as multiple, and device for measuring force 400 is arranged
Between two fixed parts 200 of arbitrary neighborhood, and the both ends of device for measuring force 400 are connected by connecting rope 300 and two fixed parts 200
It connecing, device for measuring force 400 is electrically connected with data processing equipment 500, and component 100 to be measured is bent, so that connecting rope 300 stretches, dynamometry
Device 400 is used to measure the pulling force of connecting rope 300, and this pulling force information is transferred in data processing equipment 500, data processing
Device 500 reads pulling force information, and the mid-span deflection of component 100 to be measured is calculated by the formula of setting.
Specifically, deflection measuring apparatus includes component 100 to be measured, fixed part 200, connecting rope 300,400 and of device for measuring force
Data processing equipment 500；Component 100 to be measured is generally cuboid supporting beam, is provided with tested surface on component 100 to be measured, when to
When surveying the axis stress bending of the length direction of component 100, tested surface is chosen for two sides of 100 bending deformation of component to be measured
Face；Fixed part 200 is set as multiple, and fixed part 200 may be configured as expansion bolt, and one end of expansion bolt is implanted to component to be measured
In 100 side, device for measuring force 400 is set as multiple, and the both ends of device for measuring force 400 pass through connecting rope 300 and arbitrary neighborhood two
A fixed part 200 connects, and device for measuring force 400 is connect with data processing equipment 500 by data line, component 100 to be measured by
After power bending connecting rope 300 is stretched, while device for measuring force 400 being driven to stretch, to measure the pulling force of connecting rope 300；Data
Processing unit 500 acquires the pulling force information that measures of device for measuring force 400, and data processing equipment 500 may be configured as computer, at data
Reason device 500 can converse relevant intermediate variable, finally calculate the mid-span deflection of component 100 to be measured.
In order to reduce difficulty in computation, and convenient for simplifying measuring device, fixed part 200, which is set as three, can meet measurement
It is required that correspondingly, measuring device is set as two；Without specified otherwise, in the present embodiment and following embodiment: fixed part
200 include the first fixed part 210, the first fixed part 210 and third fixed part 230, and connecting rope 300 includes the first connecting rope 310
With the second connecting rope 320, device for measuring force 400 includes the first device for measuring force 410 and the second device for measuring force 420；First fixed part
210, the first fixed part 210 and third fixed part 230, which are all set in component 100 to be measured, can generate the side of bending deformation the bottom of close to
The side in face, wherein the side of bending deformation includes two faces parallel to each other, can implement mid-span deflection on a face wherein
Measurement can also implement mid-span deflection measurement, the average value conduct for the mid-span deflection that two planar survey obtain simultaneously on both faces
Final result；First fixed part 210 and third fixed part 230 are set to above-mentioned side close to the side of bottom surface, and are located at close
The position at both ends, the first fixed part 210 is arranged on the line of the first fixed part 210 and third fixed part 230, and third is fixed
The preferential midpoint that 100 total length of component to be measured is set in portion 230；The both ends of first device for measuring force 410 pass through the first connecting rope
310 connect with the first fixed part 210 and the first fixed part 210 respectively, and the both ends of the second device for measuring force 420 pass through the second connecting rope
320 connect with the first fixed part 210 and third fixed part 230 respectively.
In addition, the quantity of fixed part 200 is not limited to above-mentioned quantity, the quantity of fixed part 200 may be configured as three
More than, same, the quantity of device for measuring force 400 and connecting rope 300 need to make corresponding adjustment；The position of fixed part 200
It may be disposed at the bottom surface of component 100 to be measured, basic principle of measurement is identical.
Deflection measuring apparatus provided in this embodiment, including component to be measured 100, fixed part 200, connecting rope 300, dynamometry dress
Set 400 and data processing equipment 500；Tested surface is provided on component 100 to be measured, fixed part 200 is set as multiple, multiple fixations
Portion 200 is all set on tested surface, and device for measuring force 400 is set as multiple, and device for measuring force 400 is set to two fixations of arbitrary neighborhood
Between portion 200, and the both ends of device for measuring force 400 are connect by connecting rope 300 with two fixed parts 200, device for measuring force 400 and number
It is electrically connected according to processing unit 500, component 100 to be measured is bent, so that connecting rope 300 stretches, device for measuring force 400 is for measuring connection
The pulling force of rope 300, and this pulling force information is transferred in data processing equipment 500, data processing equipment 500 reads pulling force letter
It ceases, and calculates the mid-span deflection of component 100 to be measured by the formula of setting；It is set as multiple by fixed part 200, multiple fixations
Portion 200 is all set on tested surface, and device for measuring force 400 is set between two fixed parts 200 of arbitrary neighborhood, device for measuring force 400
Both ends connect with two fixed parts 200 by connecting rope 300, device for measuring force 400 is electrically connected with data processing equipment 500, to
Surveying the bending of component 100 drives connecting rope 300 to stretch, and device for measuring force 400 measures the pulling force of connecting rope 300, and pulling force information is passed
It is handed in data processing equipment 500, data processing equipment 500 reads pulling force information, and the span centre for calculating component 100 to be measured is scratched
Degree.
On the basis of the above embodiments, further, deflection measuring apparatus provided in this embodiment further includes support frame
600；Support frame 600 is set as two, and two support frames 600 are respectively arranged on the both ends of component 100 to be measured, and two supports
Frame 600 is connect with component 100 to be measured.
Specifically, support frame 600 is set as two, support frame 600 includes four supporting legs 610, and support frame 600 leads to respectively
Supporting leg 610 is crossed to be supported on ground；Two support frames 600 are respectively arranged at the both ends of component 100 to be measured, two support frames
600 connect with the both ends of component 100 to be measured respectively, are in vacant state by the middle part of component 100 to be measured.
Further, height adjuster 620 is provided on support frame 600；Height adjuster 620 is for adjusting support
The height of frame 600, to meet the requirement of the support to the different height of component 100 to be measured.
Specifically, being provided with height adjuster 620 on support frame 600, it is flexible that height adjuster 620 is set as second level
Structure, second level stretching structure are made of three metal sleeves, and upper layer sleeve is successively extend into lower layer's sleeve, every adjacent sleeve it
Between connected by pin shaft, be provided with multiple through-holes along its length on each sleeve, pin shaft be plugged in different through-holes, can
Realize the adjustment of 600 height of support frame；Four support legs are along the circumferential direction respectively welded on the sleeve of bottommost.
Further, support frame 600 further includes support plate 630；Support plate 630 is connect with height adjuster 620, to be measured
The both ends of component 100 are connect with support plate 630 respectively.
Specifically, support plate 630 is connect with the top of upper layer sleeve, the both ends of component 100 to be measured are supported with two respectively
The support plate 630 of frame 600 connects, and more specifically, connecting hole can be opened up in support plate 630, the both ends of U-bolt pass through connection
Component 100 to be measured is fixed in support plate 630 by hole.
Further, level meter 640 is provided in support plate 630；Level meter 640 is set as multiple, multiple level meters 640
It is all set in support plate 630, level meter 640 is used to detect the horizontality of support plate 630.
Specifically, in horizontal positioned and measurement process in order to guarantee component 100 to be measured after 100 stress of component to be measured
Stability is provided with level meter 640 in support plate 630, and level meter 640 is set as multiple, between multiple level meters 640 respectively
It is provided with angle, to guarantee support plate 630 generally in horizontality.
Further, deflection measuring apparatus further includes load-bearing device 700；Load-bearing device 700 is connect with component 100 to be measured,
So that component 100 to be measured is bent in the axial direction；And load-bearing device 700 is set as multiple, multiple load-bearing devices 700 with it is to be measured
Component 100 connects.
Specifically, load-bearing device 700 is set as body structure, solid cement or other weights are provided in body structure
Matter, load-bearing device 700 are set as multiple, and the specification of multiple load-bearing devices 700 is different, to meet the negative of component 100 to be measured
It is important to ask, so that component to be measured 100 is bent certain radian；Load-bearing device 700 is connected to the length of component 100 to be measured by steel wire cable
The center for spending direction, so that the both ends deformation state of component to be measured 100 is close.
Deflection measuring apparatus provided in this embodiment is respectively arranged at the two of component 100 to be measured by two support frames 600
End, two support frames 600 are connected with the both ends of component 100 to be measured respectively, and height adjuster 620 is provided on support frame 600,
Height adjuster 620 can flexibly adjustment support frame 600 whole height；Support plate 630 and height adjuster 620 connect
It connects, the both ends of component 100 to be measured are connect with support plate 630 respectively, and level meter 640, level meter 640 are provided in support plate 630
The horizontality of detectable support plate 630, expands the use scope of measuring device provided in this embodiment, so that measuring device
Using more flexible.
In addition, measuring device provided in this embodiment is not rely on above-mentioned support frame 600, measuring device can be direct
It realizes and measurement operation is implemented to the component to be measured 100 of different conditions, such as complete the building crossbeam of casting or installation.
On the basis of the above embodiments, further, the device for measuring force in deflection measuring apparatus provided in this embodiment
400 are set as spring tension meter；.
Specifically, device for measuring force 400 is set as digital display spring tension meter, digital display spring tension meter be can be achieved and computer
The tension variations amount measured can be transmitted in computer by communication, device for measuring force 400；Connecting rope 300 is set as high-intensitive bullet
Power rope, stretch cord can satisfy the bending requirement of component 100 to be measured.
Deflection measuring apparatus provided in this embodiment is set as spring tension meter, connecting rope 300 by device for measuring force 400
It is set as stretch cord, device for measuring force 400 can be realized to be transmitted with the data of data processing equipment 500, improves the present embodiment amount of deflection
The measurement accuracy of measuring device.
On the basis of the above embodiments, further, the measurement method of deflection measuring apparatus provided in this embodiment, packet
Include following steps:
Multiple fixed parts 200 are fixed on tested surface；
The both ends of device for measuring force 400 are connect by connecting rope 300 with two fixed parts 200 of arbitrary neighborhood, so as to appoint
It anticipates and is provided with device for measuring force 400 between two neighboring fixed part 200；
Moment of flexure is applied to component 100 to be measured, extends connecting rope 300, device for measuring force 400 detects the pulling force of connecting rope 300,
And pulling force information is transferred in data processing equipment 500；
Data processing equipment 500 calculates the displacement of spring in device for measuring force 400 according to pulling force, and calculates structure to be measured
The mid-span deflection of part 100.
Specifically, by flexural member setting in support frame 600 or after being mounted in building facility, the first fixed part 210,
Third fixed part 230 and the first fixed part 210 are separately fixed at the both ends of tested surface and the center of length direction；By the first dynamometry
The both ends of device 410 pass through the first connecting rope 310 respectively and are connected between the first fixed part 210 and the first fixed part 210, by
The both ends of two device for measuring force 420 pass through respectively the second connecting rope 320 be connected to the first fixed part 210 and third fixed part 230 it
Between, wherein the stiffness coefficient of the first device for measuring force 410 and the second device for measuring force 420 is selected as identical, the first connecting rope 310 and
The elasticity modulus and sectional area of two connecting ropes 320 are selected as identical；Adjust the first connecting rope 310 and the second connecting rope 320
Elasticity makes the value of thrust of the first device for measuring force 410 and the second device for measuring force 420 be set as the 20% of pulling force range respectively, and
The deflection metrology of component 100 to be measured is carried out as original state；Outer load is applied to component 100 to be measured by load-bearing device 700
Lotus, so that component to be measured 100 generates certain bending deformation, meanwhile, so that connecting rope 300 and the elongation of the second connecting rope 320, are surveyed
Power device 400 detects the pulling force of connecting rope 300, and pulling force information is transferred in data processing equipment 500；Data processing equipment
500 calculate the displacement of spring in device for measuring force 400 according to pulling force, and calculate component 100 to be measured according to the formula of setting
Mid-span deflection.
In the measurement method of deflection measuring apparatus provided in this embodiment, more specifically, data processing equipment 500 can
Read out the tension variations amount F of the first device for measuring force 4101And second device for measuring force 420 tension variations amount F2, pass through elasticity
Mechanics Hooke's law (f=kx) can calculate separately out the spring elongation x in the first device for measuring force 4101And first dynamometry dress
Set the spring elongation x in 4102；Combining material mechanics Hooke's law (σ=E ε) can derive that the amount of deflection of flexural member calculates
Formula, specifically:When structure to be measured
When the bending two ends state of part 100 is identical, x1=x2=x, F1=F2=F, the calculation formula of amount of deflection can simplify at this time are as follows:Wherein, L is the computational length of flexural member, and E, A are respectively first
The elasticity modulus and sectional area of connecting rope 310 and the second connecting rope 320.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of deflection measuring apparatus characterized by comprising component, fixed part, connecting rope, device for measuring force and data to be measured
Processing unit；
Tested surface is provided on the component to be measured, the fixed part is set as multiple, and multiple fixed parts are all set in institute
State on tested surface, the device for measuring force is set as multiple, the device for measuring force be set to two fixed parts of arbitrary neighborhood it
Between, and the both ends of the device for measuring force are connect by the connecting rope with two fixed parts, the device for measuring force with it is described
Data processing equipment electrical connection, the member bends to be measured, so that the connecting rope stretches, the device for measuring force is for measuring institute
The pulling force of connecting rope is stated, and this pulling force information is transferred in the data processing equipment, the data processing equipment reads institute
Pulling force information is stated, and calculates the mid-span deflection of the component to be measured by the formula of setting.
2. deflection measuring apparatus according to claim 1, which is characterized in that further include support frame；
Support frame as described above is set as two, and two support frames as described above are respectively arranged on the both ends of the component to be measured, and two
Support frame as described above is connect with the component to be measured.
3. deflection measuring apparatus according to claim 2, which is characterized in that be provided with height adjustment dress on support frame as described above
It sets；
The height adjuster is used to adjust the height of support frame as described above, to meet to the different height of the component to be measured
Support requires.
4. deflection measuring apparatus according to claim 3, which is characterized in that support frame as described above further includes support plate；
The support plate is connect with the height adjuster, and the both ends of the component to be measured are connect with the support plate respectively.
5. deflection measuring apparatus according to claim 4, which is characterized in that be provided with level meter in the support plate；
The level meter is set as multiple, and multiple level meters are all set in the support plate, and the level meter is for examining
Survey the horizontality of the support plate.
6. deflection measuring apparatus according to claim 1, which is characterized in that further include load-bearing device；
The load-bearing device is connect with the component to be measured, so that the component to be measured is bent in the axial direction.
7. deflection measuring apparatus according to claim 6, which is characterized in that the load-bearing device is set as multiple, multiple
The load-bearing device is connect with the component to be measured.
8. deflection measuring apparatus according to claim 1, which is characterized in that the device for measuring force is set as spring tension
Meter.
9. deflection measuring apparatus according to claim 1, which is characterized in that the connecting rope is set as stretch cord.
10. a kind of measurement method of deflection measuring apparatus, which comprises the following steps:
Multiple fixed parts are fixed on tested surface；
The both ends of device for measuring force are connected by two fixed parts of connecting rope and arbitrary neighborhood, so that described in arbitrary neighborhood two
Device for measuring force is provided between fixed part；
Moment of flexure is applied to component to be measured, makes to connect rope elongation, device for measuring force detects the pulling force of connecting rope, and pulling force information is transmitted
Into data processing equipment；
Data processing equipment calculates the displacement of spring in device for measuring force according to pulling force, and the span centre for calculating component to be measured is scratched
Degree.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111537169A (en) * | 2020-05-11 | 2020-08-14 | 中国建筑第七工程局有限公司 | Movable bridge deflection detector |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2083291U (en) * | 1990-12-28 | 1991-08-21 | 艾世杰 | Deflection measuring instrument for concrete member |
| US5251492A (en) * | 1991-02-28 | 1993-10-12 | Deutsche Aerospace Airbus Gmbh | Apparatus and method for measuring a tension force in a rope or cable |
| US6053052A (en) * | 1995-11-16 | 2000-04-25 | Timberco, Inc. | Panel performance test system |
| US20080028865A1 (en) * | 2006-08-07 | 2008-02-07 | Steele David H | Portable Deflection Instrument for Testing Installed Planks |
| CN201438141U (en) * | 2009-05-18 | 2010-04-14 | 北京中土赛科科技开发有限公司 | Bridge dynamic deflection test device |
| CN202002786U (en) * | 2011-03-21 | 2011-10-05 | 长安大学 | Instrument for testing deflection of bridge |
| CN102288152A (en) * | 2011-07-25 | 2011-12-21 | 河南路研交通科技有限公司 | Device and method for measuring deflection of bridge structure |
| US20110314925A1 (en) * | 2010-06-25 | 2011-12-29 | David Robert Loveland | Deflection testing apparatus and method for using |
| CN102539093A (en) * | 2012-01-06 | 2012-07-04 | 上海交通大学 | Deflection sensor for monitoring bridge deformation and deflection measuring method |
| CN103575197A (en) * | 2012-08-03 | 2014-02-12 | 浙江增洲造船有限公司 | Device and method for detecting deflection of main engine of marine diesel engine |
| CN105627896A (en) * | 2016-01-12 | 2016-06-01 | 河北远洲工程咨询有限公司 | Bridge flexibility detection device and detection method |
| CN106767485A (en) * | 2017-02-21 | 2017-05-31 | 安徽工业大学 | Portable member bends measurement apparatus and its application method |
| CN206281482U (en) * | 2016-12-28 | 2017-06-27 | 湖南科技大学 | A kind of device measured across waters deflection of bridge span |
| CN209069543U (en) * | 2018-12-18 | 2019-07-05 | 四川省建筑科学研究院 | Deflection measuring apparatus |
-
2018
- 2018-12-18 CN CN201811551018.5A patent/CN109443673B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2083291U (en) * | 1990-12-28 | 1991-08-21 | 艾世杰 | Deflection measuring instrument for concrete member |
| US5251492A (en) * | 1991-02-28 | 1993-10-12 | Deutsche Aerospace Airbus Gmbh | Apparatus and method for measuring a tension force in a rope or cable |
| US6053052A (en) * | 1995-11-16 | 2000-04-25 | Timberco, Inc. | Panel performance test system |
| US20080028865A1 (en) * | 2006-08-07 | 2008-02-07 | Steele David H | Portable Deflection Instrument for Testing Installed Planks |
| CN201438141U (en) * | 2009-05-18 | 2010-04-14 | 北京中土赛科科技开发有限公司 | Bridge dynamic deflection test device |
| US20110314925A1 (en) * | 2010-06-25 | 2011-12-29 | David Robert Loveland | Deflection testing apparatus and method for using |
| CN202002786U (en) * | 2011-03-21 | 2011-10-05 | 长安大学 | Instrument for testing deflection of bridge |
| CN102288152A (en) * | 2011-07-25 | 2011-12-21 | 河南路研交通科技有限公司 | Device and method for measuring deflection of bridge structure |
| CN102539093A (en) * | 2012-01-06 | 2012-07-04 | 上海交通大学 | Deflection sensor for monitoring bridge deformation and deflection measuring method |
| CN103575197A (en) * | 2012-08-03 | 2014-02-12 | 浙江增洲造船有限公司 | Device and method for detecting deflection of main engine of marine diesel engine |
| CN105627896A (en) * | 2016-01-12 | 2016-06-01 | 河北远洲工程咨询有限公司 | Bridge flexibility detection device and detection method |
| CN206281482U (en) * | 2016-12-28 | 2017-06-27 | 湖南科技大学 | A kind of device measured across waters deflection of bridge span |
| CN106767485A (en) * | 2017-02-21 | 2017-05-31 | 安徽工业大学 | Portable member bends measurement apparatus and its application method |
| CN209069543U (en) * | 2018-12-18 | 2019-07-05 | 四川省建筑科学研究院 | Deflection measuring apparatus |
Non-Patent Citations (4)
| Title |
|---|
| 何政等: "框架结构悬链线效应研究新进展", 《力学进展》, vol. 42, no. 05, pages 547 - 561 * |
| 卢少微等: "CFRP加固RC梁静载荷效应的有限元模拟", 《沈阳建筑大学学报(自然科学版)》, vol. 22, no. 02, pages 186 - 190 * |
| 陈健华等: "20~t桥式起重机金属结构承载能力测试", 《河北理工学院学报》, no. 01, pages 78 - 91 * |
| 陈健华等: "20t桥式起重机金属结构承载能力测试", 《河北理工学院学报》, no. 1, pages 78 - 91 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111537169A (en) * | 2020-05-11 | 2020-08-14 | 中国建筑第七工程局有限公司 | Movable bridge deflection detector |
| CN111537169B (en) * | 2020-05-11 | 2021-09-28 | 中国建筑第七工程局有限公司 | Movable bridge deflection detector |
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