CN206321226U - Electromagnetic levitation type bearing horizontal displacement measurement apparatus - Google Patents
Electromagnetic levitation type bearing horizontal displacement measurement apparatus Download PDFInfo
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- CN206321226U CN206321226U CN201621260863.3U CN201621260863U CN206321226U CN 206321226 U CN206321226 U CN 206321226U CN 201621260863 U CN201621260863 U CN 201621260863U CN 206321226 U CN206321226 U CN 206321226U
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- Prior art keywords
- levitation
- horizontal displacement
- magnetic
- suspended matter
- gauge block
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- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The utility model discloses a kind of electromagnetic levitation type bearing horizontal displacement measurement apparatus, mainly it is made up of magnetic-levitation and shroud sleeve.The device is based on magnetic suspension principle, using magnetic-levitation constant vertical force is provided for suspended matter gauge block, suspended matter gauge block is set to be suspended on track, the fixing point formed among bearing horizontal displacement test, magnetic-levitation, shroud sleeve are then as the slip occurred level of bearing sliding steel plate is moved, measure suspended matter gauge block and the change of shroud sleeve relative level distance, you can obtain bridge pad horizontal displacement.The utility model is tested applied to bridge pad horizontal displacement, without setting external stability reference point, you can accurately measure the absolute value of bridge pad horizontal displacement；And the dynamic measurement of bearing horizontal displacement can be realized, and it is widely used in the technical fields such as Test on Bridge Loading, health monitoring.Accordingly, inventor has also set up corresponding measuring method.
Description
Technical field
The utility model belongs to bridge horizontal position shift measurement technical field, more particularly to a kind of electromagnetic levitation type bearing horizontal position
Measuring system.
Background technology
Among cable-stayed bridge, suspension bridge, this kind of Longspan Bridge of continuous rigid frame, bearing transmission superstructure girder and bridge pier
Between the important component that acts on.For can longitudinal sliding motion bearing, not only possess transmission vertical force effect, may also provide simultaneously
Girder along function from bridge to free telescopic slide, to meet the girder longitudinal extension demand because of caused by temperature change.If branch
The longitudinal sliding motion function limitation of seat, then influence whether freely stretching for bridge superstructure, and then produces inside girder internal force,
Influence the overall stress of structure.Longitudinal sliding motion horizontal displacement under bearing virtual condition is reflection bearing longitudinal sliding motion working condition
Direct indicator, be also evaluate bearing sliding performance important indicator.Work as in the loading test or health monitoring of Longspan Bridge
In, the measurement or monitoring of bearing horizontal displacement are must to do project.Bearing horizontal displacement is not surveyed in current science of bridge building field
The sensor special of examination, common measuring method is to set fixed base, the installation position between pedestal and girder in bridge pier top surface
Meter is moved to be tested.But, this method is limited by displacement meter range, can not generally be met with big dilatation
The demand of bridge, and this method needs are respectively mounted pedestal in pier top and beam bottom, are related to scene drilling and install, operation ten
Divide inconvenience；Meanwhile, displacement meter method is to regard fixing point using bridge pier, and in the case of Gao Dun, bridge pier pier top is inherently present
The horizontal displacement of longitudinal direction, obtains data to measurement and has large effect, survey data not absolute water of the girder at bearing
Prosposition is moved.Therefore, abswolute level displacement that is inexpensive, precisely, quickly measuring at bearing becomes very difficult, it is also current bridge
Beam detects a big technical barrier of engineering field.
Utility model content
The technical problems to be solved in the utility model be to provide a kind of electromagnetic levitation type bearing horizontal displacement measurement apparatus and its
Measuring method, to realize low cost, accurate, the quick abswolute level displacement measured at bearing, the device and method is generally applicable
In technical fields such as Test on Bridge Loading, construction monitoring, health monitorings.
In order to solve the above technical problems, the utility model uses following technical scheme：
Electromagnetic levitation type bearing horizontal displacement measurement apparatus, is mainly made up of magnetic-levitation and shroud sleeve；Magnetic suspension rail
Road is horizontally installed in shroud sleeve, and suspended matter gauge block is provided with magnetic-levitation, and magnetic-levitation end is provided with ranging
Instrument, magnetic-levitation has controller and is controlled to provide the constant suspending power equal to its gravity for suspended matter gauge block by controller.
Magnetic-levitation is electromagnetic type straight line magnetic-levitation, and range is more than 5cm, and maximum load is suspended matter gauge block
More than 2 times of gravity.
Controller includes suspended matter gauge block position detecting feedback system.
Rangefinder is more than 10Hz from the high precision distance detector that precision is 0.01mm grades, measurement frequency.
The problem of existing for existing highway bridge bearing horizontal displacement measuring method, inventor has designed and produced a kind of magnetic suspension
Formula bearing horizontal displacement measurement apparatus, is mainly made up of magnetic-levitation and shroud sleeve；Magnetic-levitation is horizontally installed to screen
Cover in sleeve, suspended matter gauge block is installed on magnetic-levitation, magnetic-levitation end is provided with rangefinder, magnetic-levitation tool
There is controller and controlled to provide the constant suspending power equal to its gravity for suspended matter gauge block by controller.The device is based on magnetic suspension
Principle, constant vertical force is provided using magnetic-levitation for suspended matter gauge block, suspended matter gauge block is suspended on track, is formed
Fixing point (i.e. therein realizes that the constant permanent datum of horizontal coordinate is set) among bearing horizontal displacement test, magnetcisuspension
Floating track, shroud sleeve are then moved with the slip occurred level of bearing sliding steel plate, measurement suspended matter gauge block and shroud sleeve
The change of relative level distance, you can obtain bridge pad horizontal displacement.The utility model is applied to bridge pad horizontal position
Test is moved, without setting external stability reference point, you can accurately measure the absolute value of bridge pad horizontal displacement；And can realize
The dynamic measurement of bearing horizontal displacement, and it is widely used in the technical fields such as Test on Bridge Loading, health monitoring.Accordingly, invent
People has also set up corresponding measuring method.
Compared with prior art, outstanding advantage of the present utility model is characterized in particular in：
(1) by magnetic suspension principle, the constant permanent datum of horizontal coordinate is internally formed in device, without such as conventional measurement
Amount method is beyond bridge or pier top sets fixing point, simplifies bearing horizontal displacement test process, works as in long cable-stayed bridge, suspension bridge
Middle application advantage is obvious；
(2) electromagnetic levitation type bearing horizontal displacement measurement apparatus is directly mounted on the upper sliding steel plate of bearing, in-site installation
And operation is very convenient, improves bearing horizontal displacement testing efficiency；
(3) high precision magnetic levitation track and rangefinder are selected, the displacement measurement of 0.1mm precision can be achieved, engineering is met
Need, and instrument is sealed in shroud sleeve, is not disturbed by outside environmental elements.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model electromagnetic levitation type bearing horizontal displacement measurement apparatus.
Fig. 2 is the stress diagram of suspended matter gauge block in the utility model electromagnetic levitation type bearing horizontal displacement measurement apparatus.
Fig. 3 is that the use state of the utility model electromagnetic levitation type bearing horizontal displacement measurement apparatus (is moved horizontally with reference to figure
Before).
Fig. 4 is that the use state of the utility model electromagnetic levitation type bearing horizontal displacement measurement apparatus (is moved horizontally with reference to figure
Afterwards).
In figure：1 magnetic-levitation, 2 suspended matter gauge blocks, 3 controllers, 4 rangefinders, 5 shroud sleeves, 6 bearings, 7 bridges, 8
Bridge pier.
Embodiment
1. basic structure
As shown in figure 1, electromagnetic levitation type bearing horizontal displacement measurement apparatus, mainly by 5 groups of magnetic-levitation 1 and shroud sleeve
Into；Magnetic-levitation is horizontally installed in shroud sleeve, and suspended matter gauge block 2, magnetic-levitation end are provided with magnetic-levitation
Portion is provided with rangefinder 4, and magnetic-levitation has controller 3 and provided by controller control for suspended matter gauge block equal to its gravity
Constant suspending power.
Wherein, magnetic-levitation is electromagnetic type straight line magnetic-levitation, and range is more than 5cm, and maximum load is suspension
More than 2 times of mass gravity.Controller includes suspended matter gauge block position detecting feedback system, constant to suspended matter gauge block to suspend
Power control accuracy is less than 0.1N, is less than 0.01mm to suspended matter gauge block position control accuracy.Rangefinder is 0.01mm from precision
The high precision distance detector of level, measurement frequency is more than 10Hz, and the relative distance for measuring suspended matter gauge block changes.
2. operation principle
As shown in Figures 2 to 4, electromagnetic levitation type bearing horizontal displacement measurement apparatus is directly mounted at the upper cunning of bridge pad 6
Dynamic steel plate, controller control magnetic-levitation, in the effective travel of magnetic-levitation, is provided equal to quality for suspended matter gauge block
The constant suspending power F of block gravity.Now, suspended matter gauge block is only provided straight up by self gravitation G and magnetic-levitation
Constant two power of suspending power F effect, when suspending power is equal with mass self gravitation all the time (F=G), mass is in
One vertical poised state, suspended matter gauge block does not come in contact with magnetic-levitation, and its true horizontal position will not be because of magnetic suspension
The movement of track and change, and then formed bearing horizontal displacement test permanent datum.It is fixed on bearing sliding steel plate
Magnetic-levitation, shroud sleeve produce horizontal displacement d as steel plate is slided, now because mass is disengaged with track, no
Any horizontal force is born, mass is in stress balance state, and the true horizontal position of suspended matter gauge block is not with magnetic suspension rail
Road changes, and simply the horizontal relative position of mass and shroud sleeve changes, the knots modification and shroud sleeve of relative position
Horizontal direction displacement be it is equal, i.e., it is equal with the horizontal displacement of bearing upper steel plate.By being installed on magnetic-levitation end
Stadia surveying go out mass and the variation delta L of shroud sleeve relative position before and after displacement, that is, obtain the horizontal position of bearing
Move.It is L such as to produce mass and the horizontal range of shroud sleeve end before length travel1, produce length travel after mass with
The horizontal range of shroud sleeve end is L2, then bearing horizontal displacement value is d=Δs L=L1-L2.Connected using dynamic rangefinder
Continuous measurement, you can realize bearing horizontal displacement dynamically test.
3. operating procedure
(1) carry out before bearing horizontal displacement test, on the sliding steel plate of bridge pad, electromagnetic levitation type bearing is fixedly mounted
Horizontal displacement measurement apparatus, magnetic-levitation direction is parallel with bearing horizontal displacement direction to be tested；
(2) controller power source is opened, by controller by suspended matter gauge block position adjustments to magnetic-levitation middle of stroke
Position, keeps suspending power suspended matter gauge block is in static suspended state, and set suspending power in magnetic-levitation to keep this shape
State is constant, and suspended matter gauge block abswolute level coordinate keeps constant；
(3) now horizontal range L of the suspended matter gauge block relative to shroud sleeve end is measured1；
(4) bearing sliding steel plate drives shroud sleeve and magnetic-levitation level with girder generation horizontal direction displacement d
To mobile d, and suspended matter gauge block is in stress balance state all the time, and absolute position does not move horizontally and changed with magnetic-levitation
Become, i.e., suspension abswolute level coordinate is x, y；
(5) now horizontal range L of the suspended matter gauge block relative to shroud sleeve end is measured2；
(6) it is d=Δs L=L to calculate bearing horizontal displacement1-L2。
4. application example
To bearing length travel at the auxiliary pier pier top of certain floating system cable stayed bridge of 193m+330m+113m half with temperature
Situation of change is tested, and using foregoing electromagnetic levitation type bearing horizontal displacement measurement apparatus, is carried out with reference to aforesaid operations step.
Before bearing horizontal displacement test is carried out, electromagnetic levitation type bearing horizontal position is fixedly mounted on the sliding steel plate of bearing
Measuring system, magnetic-levitation direction is parallel with bearing horizontal displacement direction to be tested.Controller power source is opened, passes through control
Suspended matter gauge block position adjustments to magnetic-levitation middle of stroke position are kept suspending power to be in suspended matter gauge block quiet by device processed
Only suspended state, and set suspending power in magnetic-levitation to keep this state constant, suspended matter gauge block abswolute level coordinate is kept
It is constant.Measure now horizontal range L of the suspended matter gauge block relative to shroud sleeve end1=50.3mm.Bearing sliding steel plate with
Girder and produce horizontal direction displacement, measure now horizontal range L of the suspended matter gauge block relative to shroud sleeve end2=
31.2mm, calculates bearing horizontal displacement for d=Δs L=L1-L2=19.1mm.
Claims (4)
1. a kind of electromagnetic levitation type bearing horizontal displacement measurement apparatus, it is characterised in that mainly by magnetic-levitation and shroud sleeve group
Into；The magnetic-levitation is horizontally installed in shroud sleeve, and suspended matter gauge block, magnetic-levitation are provided with magnetic-levitation
End is provided with rangefinder, and magnetic-levitation has controller and provided by controller control for suspended matter gauge block equal to its gravity
Constant suspending power.
2. electromagnetic levitation type bearing horizontal displacement measurement apparatus according to claim 1, it is characterised in that：The magnetic suspension rail
Road is electromagnetic type straight line magnetic-levitation, and range is more than 5cm, and maximum load is more than 2 times of suspended matter gauge block gravity.
3. electromagnetic levitation type bearing horizontal displacement measurement apparatus according to claim 1, it is characterised in that：The controller bag
The position detecting feedback system of gauge block containing suspended matter.
4. electromagnetic levitation type bearing horizontal displacement measurement apparatus according to claim 1, it is characterised in that：The rangefinder choosing
With the high precision distance detector that precision is 0.01mm grades, measurement frequency is more than 10Hz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621260863.3U CN206321226U (en) | 2016-11-23 | 2016-11-23 | Electromagnetic levitation type bearing horizontal displacement measurement apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621260863.3U CN206321226U (en) | 2016-11-23 | 2016-11-23 | Electromagnetic levitation type bearing horizontal displacement measurement apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN206321226U true CN206321226U (en) | 2017-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621260863.3U Active CN206321226U (en) | 2016-11-23 | 2016-11-23 | Electromagnetic levitation type bearing horizontal displacement measurement apparatus |
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| CN (1) | CN206321226U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106767608A (en) * | 2016-11-23 | 2017-05-31 | 广西交通科学研究院 | Electromagnetic levitation type bearing horizontal displacement measurement apparatus and its measuring method |
| CN114688959A (en) * | 2022-04-11 | 2022-07-01 | 水利部交通运输部国家能源局南京水利科学研究院 | Detection device and detection method for horizontal displacement of test structure |
-
2016
- 2016-11-23 CN CN201621260863.3U patent/CN206321226U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106767608A (en) * | 2016-11-23 | 2017-05-31 | 广西交通科学研究院 | Electromagnetic levitation type bearing horizontal displacement measurement apparatus and its measuring method |
| CN114688959A (en) * | 2022-04-11 | 2022-07-01 | 水利部交通运输部国家能源局南京水利科学研究院 | Detection device and detection method for horizontal displacement of test structure |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 530007 the Guangxi Zhuang Autonomous Region XiXiangTang Nanning high tech two Road No. 6 Patentee after: Guangxi Jiaoke Group Co.,Ltd. Address before: 530007 the Guangxi Zhuang Autonomous Region XiXiangTang Nanning high tech two Road No. 6 Patentee before: GUANGXI TRANSPORTATION RESEARCH & CONSULTING Co.,Ltd. Address after: 530007 the Guangxi Zhuang Autonomous Region XiXiangTang Nanning high tech two Road No. 6 Patentee after: GUANGXI TRANSPORTATION RESEARCH & CONSULTING Co.,Ltd. Address before: 530007 the Guangxi Zhuang Autonomous Region XiXiangTang Nanning high tech two Road No. 6 Patentee before: GUANGXI TRANSPORTATION Research Institute |
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| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210427 Address after: 530001 4th floor, science and technology building, no.6, Gaoxin 2nd Road, Nanning, Guangxi Zhuang Autonomous Region Patentee after: Guangxi Jiaoke Engineering Consulting Co.,Ltd. Patentee after: Guangxi Jiaoke Group Co.,Ltd. Address before: 530007 the Guangxi Zhuang Autonomous Region XiXiangTang Nanning high tech two Road No. 6 Patentee before: Guangxi Jiaoke Group Co.,Ltd. |
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| TR01 | Transfer of patent right |