CN206321248U - Electromagnetic levitation type bridge main tower tower top deviation measurement device - Google Patents
Electromagnetic levitation type bridge main tower tower top deviation measurement device Download PDFInfo
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- CN206321248U CN206321248U CN201621262667.XU CN201621262667U CN206321248U CN 206321248 U CN206321248 U CN 206321248U CN 201621262667 U CN201621262667 U CN 201621262667U CN 206321248 U CN206321248 U CN 206321248U
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- 238000005339 levitation Methods 0.000 title claims abstract description 70
- 238000005259 measurement Methods 0.000 title claims abstract description 36
- 230000005484 gravity Effects 0.000 claims description 8
- 238000007667 floating Methods 0.000 claims description 4
- 238000012360 testing method Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 12
- 239000000725 suspension Substances 0.000 abstract description 10
- 230000008859 change Effects 0.000 abstract description 7
- 238000012544 monitoring process Methods 0.000 abstract description 5
- 230000036541 health Effects 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000000443 aerosol Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Abstract
The utility model discloses a kind of electromagnetic levitation type bridge main tower tower top deviation measurement device, mainly it is made up of the mounting seat of magnetic-levitation, shroud sleeve and adjustable horizontal.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 the test of overhead off normal, magnetic-levitation, shroud sleeve and base are then as bridge tower top off normal occurred level is moved, measure suspended matter gauge block and the change of shroud sleeve relative level distance, you can obtain the off normal of bridge tower top.The utility model is tested applied to bridge main tower tower top off normal, without setting external stability point, you can accurately measure the absolute off normal of bridge tower top；And the dynamic measurement of tower top off normal 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 the horizontal off normal field of measuring technique of bridge, more particularly to a kind of electromagnetic levitation type bridge main tower tower
Push up deviation measurement device.
Background technology
Work as bridge in cable-stayed bridge, this kind of Longspan Bridge of suspension bridge, bridge tower is important supporting member, the level of bridge tower tower top
Off normal size is an important indicator for reflecting full-bridge stress.Loading test detection, construction control in cable-stayed bridge, suspension bridge
Among system and bridge health monitoring, overhead off normal is all important measurement index, measurement off normal value be solution structure by
Power state and a critically important link for ensureing structure safety.
Common overhead off normal method of testing has total powerstation method, GPS methods etc..Total powerstation method needs to set water outside bridge
The constant permanent datum of flat coordinate, recycles total station survey tower top to change relative to the horizontal coordinate of permanent datum, profit
The horizontal off normal value of tower top is calculated with geometric coordinate relation, but the measurement of total powerstation method is needed manually to point and artificial observation, essence
Degree is influenceed by air, environment and human factor.It is to utilize GPS network network that GPS methods, which are surveyed, sets GPS in tower top, a position is entered
Row calculating coordinate obtains the horizontal off normal of tower top, although GPS methods can realize automatic measurement, and fixation need not be set outside bridge
Reference point, but horizontal accuracy is only capable of reaching 5mm ranks, and requirement of engineering can not be met in the case of off normal is less, and GPS is surveyed
Measuring appratus equipment price is very high, and the unit price of 1 measuring point just reaches tens of thousands of members, and whole system needs hundreds thousand of members.Therefore, will it is low into
Originally, precisely, quickly measurement cable-stayed bridge, suspension bridge overhead off normal become very difficult, are also current bridge machinery engineering neck
The one big technical barrier in domain.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of electromagnetic levitation type bridge main tower tower top deviation measurement device,
With realize low cost, precisely, quickly measurement cable-stayed bridge, suspension bridge overhead off normal, be widely used in Test on Bridge Loading, apply
The technical fields such as work monitoring, health monitoring.
In order to solve the above technical problems, the utility model uses following technical scheme：
Electromagnetic levitation type bridge main tower tower top deviation measurement device, mainly by magnetic-levitation, shroud sleeve and adjustable water
Flat mounting seat composition；Magnetic-levitation is horizontally installed in shroud sleeve, and shroud sleeve is placed on mounting seat；Magnetcisuspension
Suspended matter gauge block is installed, magnetic-levitation end is provided with rangefinder on floating track, magnetic-levitation have controller and by
Controller control provides the constant suspending power equal to its gravity for suspended matter gauge block；Controller is detected comprising suspended matter gauge block position
Reponse system.
Magnetic-levitation is electromagnetic type straight line magnetic-levitation, and range is more than 10cm, and maximum load is suspended load discharge
More than 2 times of block gravity.
Mounting seat has three foot screws and a round air level.
Rangefinder is more than 10Hz from the high precision distance detector that precision is 0.01mm grades, measurement frequency.
For existing highway bridge overhead off normal measuring method exist the problem of, inventor has designed and produced a kind of magnetcisuspension
Floating bridge main tower tower top deviation measurement device, mainly by the mounting seat of magnetic-levitation, shroud sleeve and adjustable horizontal
Composition；Magnetic-levitation is horizontally installed in shroud sleeve, and shroud sleeve is placed on mounting seat；Installed on magnetic-levitation
There is suspended matter gauge block, magnetic-levitation end is provided with rangefinder, and magnetic-levitation has controller and is by controller control
Suspended matter gauge block provides the constant suspending power equal to its gravity；Controller includes suspended matter gauge block position detecting feedback system.Should
Device is based on magnetic suspension principle, and constant vertical force is provided for suspended matter gauge block using magnetic-levitation, suspended matter gauge block is suspended
On track, (i.e. therein realizes the constant fixation of horizontal coordinate to the fixing point formed among the test of overhead off normal
Reference point is set), magnetic-levitation, shroud sleeve and base are then moved with bridge tower top off normal occurred level, and measurement suspends
Mass and the change of shroud sleeve relative level distance, you can obtain the off normal of bridge tower top.The utility model is applied to
Bridge main tower tower top off normal is tested, without setting external stability point, you can accurately measure the absolute off normal of bridge tower top；And can
The dynamic measurement of tower top off normal is realized, and 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 sets fixing point beyond bridge, in the absence of artificial and environmental disturbances problem, simplifies tower top off normal test process, in length
Application advantage is obvious among cable-stayed bridge, suspension bridge；
(2) electromagnetic levitation type bridge main tower tower top deviation measurement device is directly mounted at bridge tower tower top, can be by the tune that carries
Base regulation level is saved, in-site installation and operation are very convenient, improve tower top off normal 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 bridge main tower tower top deviation measurement device.
Fig. 2 is the stress signal of suspended matter gauge block in the utility model electromagnetic levitation type bridge main tower tower top deviation measurement device
Figure.
Fig. 3 is the utility model electromagnetic levitation type bridge main tower tower top deviation measurement device use state with reference to figure one.
Fig. 4 is the utility model electromagnetic levitation type bridge main tower tower top deviation measurement device use state with reference to figure (before off normal)
Two.
Fig. 5 is the utility model electromagnetic levitation type bridge main tower tower top deviation measurement device use state with reference to figure (after off normal)
Three.
In figure：1 magnetic-levitation, 2 suspended matter gauge blocks, 3 controllers, 4 rangefinders, 5 shroud sleeves, 6 foot screws, 7 circle water
Quasi- bubble, 8 mounting seats.
Embodiment
1. basic structure
As shown in figure 1, electromagnetic levitation type bridge main tower tower top deviation measurement device, mainly by magnetic-levitation 1, shroud sleeve
5 and the mounting seat 8 of adjustable horizontal constitute；Magnetic-levitation is horizontally installed in shroud sleeve, and shroud sleeve is placed in installation
On base；Suspended matter gauge block 2 is installed, magnetic-levitation end is provided with rangefinder 4, magnetic-levitation on magnetic-levitation
Control to provide the constant suspending power equal to its gravity for suspended matter gauge block with controller 3 and by controller.
Wherein, magnetic-levitation is electromagnetic type straight line magnetic-levitation, and range is more than 10cm, and maximum load is suspension
More than 2 times of mass gravity.Mounting seat has three foot screws 6 and a round air level 7, and three foot screws can be adjusted independently
Section, makes to justify air level between two parties, magnetic-levitation is in horizontality.Controller includes suspended matter gauge block position detection feedback system
System, is less than 0.1N to the constant suspending power control accuracy of suspended matter gauge block, is less than 0.01mm to suspended matter gauge block position control accuracy.
Rangefinder is from the high precision distance detector that precision is 0.01mm grades, and measurement frequency is more than 10Hz, for measuring suspended matter gauge block
Relative distance changes.
2. operation principle
As shown in Figures 2 to 5, electromagnetic levitation type bridge main tower tower top deviation measurement device is directly mounted at tower top, controller
Magnetic-levitation is controlled, in the effective travel of magnetic-levitation, provides constant equal to mass gravity for suspended matter gauge block
Suspending power F.The constant suspending power F straight up that now suspended matter gauge block is only provided by self gravitation G and magnetic-levitation
The effect of two power, when suspending power is equal with mass self gravitation all the time (F=G), mass is in a vertical balance
State, mass does not come in contact with magnetic-levitation, and its true horizontal position will not change because of the movement of magnetic-levitation,
And then form tower top off normal test permanent datum.The magnetic-levitation of overhead, shroud sleeve are fixed on king-tower
Off normal produces horizontal displacement d, now because mass is disengaged with track, is not subject to any horizontal force, mass in by
Dynamic balance state, the true horizontal position of suspended matter gauge block does not change with magnetic-levitation, simply mass and shroud sleeve
Horizontal relative position change, knots modification and the shroud sleeve horizontal direction displacement of relative position be it is equal, i.e., with
King-tower off normal is equal.There is mass with shroud sleeve before and after going out off normal by being installed on the stadia surveying of magnetic-levitation end
The variation delta L of relative position, produces and obtains the horizontal off normal value of king-tower.Such as mass before off normal and the distance of shroud sleeve end
For L1, mass and the distance of shroud sleeve end are L after off normal2, then overhead off normal value is d=Δs L=L1-L2.It is logical
Cross rangefinder continuously dynamically to measure, you can realize the test of the dynamic off normal of overhead.
3. operating procedure
(1) carry out before overhead off normal test, in bridge main tower tower top position, electromagnetic levitation type bridge main tower is fixedly mounted
Tower top deviation measurement device, magnetic-levitation direction is parallel with king-tower off normal direction to be tested；
(2) by adjusting the back-out amount of three foot screws of mounting seat, the bubble for making to justify in air level is placed in the middle, now base
Upper surface is in horizontality, and magnetic-levitation is also at horizontality；
(3) 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；
(4) now horizontal range L of the suspended matter gauge block relative to shroud sleeve end is measured1；
(5) bridge load test is carried out, overhead produces horizontal direction off normal d, and now the device pedestal of tower top drives
Shroud sleeve and magnetic-levitation water move flat d, and suspended matter gauge block is in stress balance state all the time, and absolute position is not
Move horizontally and change with magnetic-levitation, i.e., suspension abswolute level coordinate is x, y；
(6) now horizontal range L of the suspended matter gauge block relative to shroud sleeve end is measured2；
(7) it is d=Δs L=L to calculate overhead off normal1-L2。
4. application example
Certain double tower three is across cable-stayed bridge, and across footpath is combined as 193m+330m+113m, the high 110m of king-tower, in the load examination to the bridge
During testing, the vertical bridge of overhead is tested to horizontal off normal value.Measured using foregoing electromagnetic levitation type bridge main tower tower top off normal
Device, is carried out with reference to aforesaid operations step.
Before tower top off normal test is carried out, in overhead position, electromagnetic levitation type bridge main tower tower top off normal is fixedly mounted
Measurement apparatus, magnetic-levitation direction is parallel with king-tower off normal direction to be tested.Pass through the rotation of three foot screws of adjusting base
Output, the bubble for making to justify in air level is placed in the middle, and now base upper surface is in horizontality, and magnetic-levitation is also at horizontal
State.Controller power source is opened, by controller by suspended matter gauge block position adjustments to magnetic-levitation middle of stroke position, is kept
Suspending power, makes suspended matter gauge block be in static suspended state, and sets suspending power in magnetic-levitation to keep this state constant, hangs
Aerosol gauge block abswolute level coordinate keeps constant.Measure now horizontal range L of the suspended matter gauge block relative to shroud sleeve end1
=50.3mm, carry out bridge load test, overhead produce horizontal direction off normal, measurement now suspended matter gauge block relative to screen
Cover the horizontal range L of sleeve ends2=31.2mm, the off normal for calculating overhead at measuring point is d=Δs L=L1-L2=
19.1mm。
Claims (4)
1. a kind of electromagnetic levitation type bridge main tower tower top deviation measurement device, it is characterised in that mainly by magnetic-levitation, housing
The mounting seat of cylinder and adjustable horizontal is constituted；The magnetic-levitation is horizontally installed in shroud sleeve, and shroud sleeve is placed in
On mounting seat；Suspended matter gauge block is installed, magnetic-levitation end is provided with rangefinder, magnetcisuspension on the magnetic-levitation
Floating track has controller and is controlled to provide the constant suspending power equal to its gravity for suspended matter gauge block by controller；The control
Device includes suspended matter gauge block position detecting feedback system.
2. electromagnetic levitation type bridge main tower tower top deviation measurement device according to claim 1, it is characterised in that：The magnetcisuspension
Floating track is electromagnetic type straight line magnetic-levitation, and range is more than 10cm, maximum load for 2 times of suspended matter gauge block gravity with
On.
3. electromagnetic levitation type bridge main tower tower top deviation measurement device according to claim 1, it is characterised in that：It is described to install
Base has three foot screws and a round air level.
4. electromagnetic levitation type bridge main tower tower top deviation measurement device according to claim 1, it is characterised in that：The ranging
Instrument is more than 10Hz from the high precision distance detector that precision is 0.01mm grades, measurement frequency.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621262667.XU CN206321248U (en) | 2016-11-23 | 2016-11-23 | Electromagnetic levitation type bridge main tower tower top deviation measurement device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621262667.XU CN206321248U (en) | 2016-11-23 | 2016-11-23 | Electromagnetic levitation type bridge main tower tower top deviation measurement device |
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| CN206321248U true CN206321248U (en) | 2017-07-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106500676A (en) * | 2016-11-23 | 2017-03-15 | 广西交通科学研究院 | Electromagnetic levitation type bridge pier top deviation measurement device and its measuring method |
| CN106840115A (en) * | 2016-11-23 | 2017-06-13 | 广西交通科学研究院 | Electromagnetic levitation type bridge main tower tower top deviation measurement device and its measuring method |
| CN108827158A (en) * | 2018-06-12 | 2018-11-16 | 中铁大桥科学研究院有限公司 | A kind of Large Span Bridges king-tower deviation laser monitoring device and method |
-
2016
- 2016-11-23 CN CN201621262667.XU patent/CN206321248U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106500676A (en) * | 2016-11-23 | 2017-03-15 | 广西交通科学研究院 | Electromagnetic levitation type bridge pier top deviation measurement device and its measuring method |
| CN106840115A (en) * | 2016-11-23 | 2017-06-13 | 广西交通科学研究院 | Electromagnetic levitation type bridge main tower tower top deviation measurement device and its measuring method |
| CN108827158A (en) * | 2018-06-12 | 2018-11-16 | 中铁大桥科学研究院有限公司 | A kind of Large Span Bridges king-tower deviation laser monitoring device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Longlin Inventor after: Hao Tianzhi Inventor after: Tan Hua Inventor after: Luo Jizhi Inventor after: Li Litao Inventor after: Liu Shijian Inventor after: Rong Hao Inventor before: Wang Longlin Inventor before: Huang Pinting Inventor before: Chen Xiaoyuan Inventor before: Hao Tianzhi Inventor before: Li Litao Inventor before: Xu Zhaodong Inventor before: Liu Shijian Inventor before: Wang Haihua Inventor before: Lin Zian Inventor before: Tang Hongquan Inventor before: Mo Zhaoli |
|
| CB03 | Change of inventor or designer information | ||
| 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 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 |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP03 | Change of name, title or address |
Address after: No.6, Gaoxin 2nd Road, XiXiangTang District, Nanning City, Guangxi Zhuang Autonomous Region Patentee after: Guangxi Jiaoke Group Co.,Ltd. Country or region after: China Address before: No. 6 Gaoxin 2nd Road, Nanning City, Guangxi Zhuang Autonomous Region Patentee before: GUANGXI TRANSPORTATION RESEARCH & CONSULTING Co.,Ltd. Country or region before: China |