CN206291845U - A kind of Middle Or Small Span bridge boat structure vertical displacement measuring device - Google Patents
A kind of Middle Or Small Span bridge boat structure vertical displacement measuring device Download PDFInfo
- Publication number
- CN206291845U CN206291845U CN201621304774.4U CN201621304774U CN206291845U CN 206291845 U CN206291845 U CN 206291845U CN 201621304774 U CN201621304774 U CN 201621304774U CN 206291845 U CN206291845 U CN 206291845U
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- CN
- China
- Prior art keywords
- displacement
- crossbeam
- displacement meter
- measuring device
- vertical displacement
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a kind of Middle Or Small Span bridge boat structure vertical displacement measuring device, it is adaptable to the deflection of bridge structure measurement of the detection field of bridge, particularly cross a river.The utility model includes telescope support and displacement acquisition device, and the telescope support can stretch, fold；The measurement of bridge vertical displacement effectively can be realized remote oblique measurement structure vertical displacement information by the displacement acquisition device by oblique pull lead.The utility model is easy to that engineering truck is carried and survey crew scene is installed and used, and adapts to complicated, dangerous environment measurement, greatly improves the measuring environment of survey crew and measuring apparatus.
Description
Technical field
The utility model is related to the detection field of Middle Or Small Span bridge, more particularly to a kind of Middle Or Small Span bridge boat structure is vertical
Displacement measuring device.
Background technology
With the development of society, bridge plays more and more important effect as the important component of present traffic.
But in recent years, many bridge structures built in the past are required for carrying out complete detection, wherein important one is exactly to carry energy
Power is evaluated, and the direct method that ensure that Bearing Capacity Evaluation reliable results is exactly loading test.In loading test, amount of deflection is (perpendicular
To displacement) be bridge structure operation state concentrated expression, be bridge structure most directly and intuitively one of safety index, but bridge
Environment, topography-geomorphology below girder construction is often sufficiently complex, and displacement meter and testing staff cannot work immediately below it.In order to
Measurement deflection of bridge span, generally requires to dispose scaffold immediately below it, wastes time and energy, and the dilutional hyponatremia if bridge is gone to river, scaffold is steady
It is qualitative to be difficult to be protected, threaten personal security.
Utility model content
The utility model purpose is to provide a kind of Middle Or Small Span bridge boat structure vertical displacement measuring device, and the practicality is new
Type cause displacement meter be not in contact with bridge and not immediately below measurement position in the case of, there is provided accurate reliable displacement is surveyed
Amount.
Concrete scheme of the present utility model is：A kind of Middle Or Small Span bridge boat structure vertical displacement measuring device, including stretch
Contracting support and displacement acquisition device；Described telescope support includes fixed suspension column, fixed column, telescopic arm, crossbeam, pulley and rigidity
Base plate；It is bolted between the fixed suspension column and fixed column of the telescope support；The telescopic arm of the telescope support passes through
Locking cap in fixed column is fixed；The crossbeam and telescopic arm of the telescope support connect through circular shaft connection, crossbeam lower surface and
There are 5mm spaces between telescopic arm；There is thimble groove at two ends on the crossbeam of the telescope support；Described displacement acquisition device includes
Displacement meter, amendment displacement meter, signal sampler, weight, Magnetic gauge stand and indium steel wire；One end of described weight connects with indium steel wire
Connect, the displacement meter of the other end withstands on the lower section of weight；Two amendment displacement meters withstand in the thimble groove on crossbeam respectively, three
Magnetic gauge stand is arranged on stiff baseplate, and two amendments displacement meter and a displacement meters are hold respectively；Displacement meter and amendment position
Meter is moved to be connected on signal sampler by water conservancy project cable.
Further, pulley, the axis of pulley and the centerline collineation of crossbeam are provided between described crossbeam.
Further, described weight outside is provided with steel bushing, and the both sides of steel bushing are fixed on crossbeam by sleeve suspension rod.
Further, the displacement meter and amendment displacement meter are resistance-type displacement meter.
Further, the signal sampler is resistance-type deformeter.
The utility model produce beneficial effect be：Manpower thing can be saved under the premise of ensureing measurement accurately reliably
Power, hazards when reducing Test on Bridge Loading in the difficulty and detection process of detection displacement, convenient complexity landform, environment feelings
Detection under condition.
Brief description of the drawings
Fig. 1 is the structural representation that the utility model is implemented；
Fig. 2 is measurement apparatus figure of the present utility model；
Fig. 3 is the partial enlarged drawing of key position A in Fig. 2；
Fig. 4 is the partial enlarged drawing of key position B in Fig. 2；
Fig. 5 is the partial enlarged drawing of key position C in Fig. 2；
Fig. 6 is that schematic diagram is implemented in premeasuring；
Fig. 7 is displacement meter checkout coefficient schematic diagram calculation.
Specific embodiment
The utility model is further described below in conjunction with the accompanying drawings.
By Fig. 1 and Fig. 2 can be seen that the utility model implementation for measurement apparatus are placed in the lower section of measured structure 19
Optional position, is the oblique pull of indium steel wire 13 on pulley 5 by being glued on geodesic structure 19, bypasses the hanging weight 12 of pulley 5.
As shown in Fig. 2-Fig. 5, measurement apparatus of the present utility model are made up of telescope support and displacement acquisition device, wherein stretching
Contracting support is by stiff baseplate 17, fixed suspension column 1, fixed column 2, the telescopic arm 3 that can be lifted, crossbeam 4, pulley 5, steel bushing 6, set
Cylinder suspension rod 7 and locking cap 8 are constituted.Wherein the internal diameter of fixed column 2 is slightly larger than the overall diameter of telescopic arm 3, there is screw in fixed column 2, rotates
Locking cap 8 can extrude telescopic arm to facilitate fixed telescopic arm 3, it is ensured that telescopic arm 3 can stretch；Telescopic arm 3 and crossbeam 4 pass through
Circular shaft 16 is connected, and the lower surface of crossbeam 4 has 5mm distances with telescopic arm so that be to be hinged between telescopic arm 3 and crossbeam 4, it is ensured that stretching
Crossbeam 4 is indeformable in the case that contracting arm 3 freely stretches；Fixed column 2 and fixed suspension column 1 are connected by bolt 15, and rotary nut can
The post 2 so that fixed suspension column 1 is fixedly clamped, the fixed width of suspension column 1 is slightly larger than the width of fixed column 2, it is ensured that telescope support can be folded；
There is the thimble groove 18 of displacement meter at the bottom two ends of crossbeam 4, for the thimble of fixed amendment displacement meter 10, prevent thimble from conjugating；Lean on
The nearly middle part of crossbeam 4 is welded with sleeve suspension rod 7, and sleeve suspension rod 7 is welded on the both sides of steel bushing 6, and steel bushing 6 is used for stablizing weight
12。
Displacement acquisition device is by displacement meter 9, amendment displacement meter 10, signal sampler 11, weight 12, indium steel wire 13 and magnetic
Gauge stand 14 is constituted.Magnetic gauge stand 14 clamps displacement meter 9 and two amendment displacement meters 10, the amendment displacement meter 10 at the two ends of crossbeam 4
Thimble is put into the thimble groove 18 of the crossbeam shown in Fig. 4, and middle displacement meter 9 withstands on the bottom surface of weight 12, and weight 12 passes through indium
Steel wire 13 is suspended in steel bushing 6.Displacement meter 9 and amendment displacement meter 10 are connected on signal sampler by water conservancy project cable,
Connection method is connected for full-bridge method.Signal sampler 11 gathers each displacement and counts, and is transferred to computer by USB conversion lines
On, preserve data using computer.
As shown in fig. 6, formally needing the amount of being predicted before measurement displacement, displacement meter correction factor is obtained.
Before measurement, the vertical displacement (amount of deflection) of structure is pre-estimated, then adjust telescopic arm 3 and by correcting displacement meter 10
Measure the two ends of crossbeam 4 and rise (reduction) height S1, S2 respectively, and the weight that 12 times resistance-type displacement meters 9 of weight are measured
Hammer displacement difference Δ H (close to amount of deflection discreet value), wherein Δ S=(S1+S2)/2.
As seen from Figure 7, when the middle part climb of crossbeam 4 is Δ S, the wire length of weight 12 increases Δ L, weight 12
When ascending amount displacement structure is vertical displacement, displacement meter correction factorη>1.Wherein Δ S-phase is to measurement
Point height, oblique wire length can be ignored substantially.Displacement meter correction factor is calculated after the amount of being predicted, is bounced back (rise)
Telescopic arm 3 reduces systematic error to original state.Then start On-site Loading Test of Rc, gather the reading changes delta H of displacement meter 9,
According to correction factor η, practical structures displacement is calculated, wherein computing formula is：S=η * Δs H.
Claims (5)
1. a kind of Middle Or Small Span bridge boat structure vertical displacement measuring device, it is characterised in that：Adopted including telescope support and displacement
Acquisition means；Described telescope support includes fixed suspension column（1）, fixed column（2）, telescopic arm（3）, crossbeam（4）, pulley（5）With it is firm
Property base plate（17）；The fixed suspension column of the telescope support（1）And fixed column（2）Between pass through bolt（15）Connection；It is described flexible
The telescopic arm of support（3）By fixed column（2）On locking cap（8）It is fixed；The crossbeam of the telescope support（4）And telescopic arm
（3）Connect through circular shaft（16）Connection, crossbeam（4）Lower surface and telescopic arm（3）Between have 5mm spaces；The telescope support
Crossbeam（4）There is thimble groove at upper two ends（18）；Described displacement acquisition device includes displacement meter（9）, amendment displacement meter（10）, letter
Number Acquisition Instrument（11）, weight（12）, Magnetic gauge stand（14）With indium steel wire（13）；One end of described weight and indium steel wire（13）Even
Connect, the displacement meter of the other end（9）Withstand on weight（12）Lower section；Two amendment displacement meters（10）Crossbeam is withstood on respectively（4）On
Thimble groove（18）In, three Magnetic gauge stands are arranged on stiff baseplate（17）On, two amendment displacement meters are hold respectively（10）
With a displacement meter（9）；Displacement meter（9）With amendment displacement meter（10）It is connected on signal sampler by water conservancy project cable.
2. a kind of Middle Or Small Span bridge boat structure vertical displacement measuring device according to claim 1, it is characterised in that：Institute
The crossbeam stated（4）Between be provided with pulley（5）, pulley（5）Axis and crossbeam（4）Centerline collineation.
3. a kind of Middle Or Small Span bridge boat structure vertical displacement measuring device according to claim 1, it is characterised in that：Institute
The weight stated（12）Outside is provided with steel bushing（6）, steel bushing（6）Both sides pass through sleeve suspension rod（7）It is fixed on crossbeam.
4. a kind of Middle Or Small Span bridge boat structure vertical displacement measuring device according to claim 1, it is characterised in that：Institute
State displacement meter（9）With amendment displacement meter（10）It is resistance-type displacement meter.
5. a kind of Middle Or Small Span bridge boat structure vertical displacement measuring device according to claim 1, it is characterised in that：Institute
State signal sampler（11）It is resistance-type deformeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621304774.4U CN206291845U (en) | 2016-11-30 | 2016-11-30 | A kind of Middle Or Small Span bridge boat structure vertical displacement measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621304774.4U CN206291845U (en) | 2016-11-30 | 2016-11-30 | A kind of Middle Or Small Span bridge boat structure vertical displacement measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206291845U true CN206291845U (en) | 2017-06-30 |
Family
ID=59097422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621304774.4U Withdrawn - After Issue CN206291845U (en) | 2016-11-30 | 2016-11-30 | A kind of Middle Or Small Span bridge boat structure vertical displacement measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206291845U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036522A (en) * | 2016-11-30 | 2017-08-11 | 郑州大学 | A kind of Middle Or Small Span bridge boat structure vertical displacement measuring device and method |
| CN111076685A (en) * | 2019-12-26 | 2020-04-28 | 南京南瑞水利水电科技有限公司 | Vibrating wire type flexible displacement measuring device |
-
2016
- 2016-11-30 CN CN201621304774.4U patent/CN206291845U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036522A (en) * | 2016-11-30 | 2017-08-11 | 郑州大学 | A kind of Middle Or Small Span bridge boat structure vertical displacement measuring device and method |
| CN107036522B (en) * | 2016-11-30 | 2023-05-26 | 郑州大学 | Device and method for measuring vertical displacement of water structure of middle-span and small-span bridge |
| CN111076685A (en) * | 2019-12-26 | 2020-04-28 | 南京南瑞水利水电科技有限公司 | Vibrating wire type flexible displacement measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170630 Effective date of abandoning: 20230526 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20170630 Effective date of abandoning: 20230526 |