CN209247294U - A kind of system for measuring bridge specific position amount of deflection - Google Patents
A kind of system for measuring bridge specific position amount of deflection Download PDFInfo
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- CN209247294U CN209247294U CN201920064044.9U CN201920064044U CN209247294U CN 209247294 U CN209247294 U CN 209247294U CN 201920064044 U CN201920064044 U CN 201920064044U CN 209247294 U CN209247294 U CN 209247294U
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- specific position
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Abstract
The utility model discloses a kind of systems for measuring bridge specific position amount of deflection, by laser beam emitting device, monitoring point laser reflecting device and laser receiver, wherein: the laser beam emitting device includes laser emitter, attitude-adjusting system and stabilizing base, the laser emitter for being equipped with laser collimation device is fixed on attitude-adjusting system, the adjustment of angle and direction being realized by attitude-adjusting system, Laser emission being carried out with the monitoring point laser reflecting device being aligned on bridge, attitude-adjusting system is fixed on stabilizing base；The monitoring point laser reflecting device is made of plane mirror and concave mirror, concave mirror is perpendicular to plane mirror, plane mirror is for after emitting laser reflection to concave mirror, laser to reflex to the laser receiver by concave mirror again；The laser receiver includes half reflection labeling projection target, for monitoring and the variation of recording laser hot spot and motion track.
Description
Technical field
The utility model belongs to Bridge Inspection field, in particular to a kind of for measuring bridge specific position amount of deflection
System.
Background technique
Bridge is the important component in traffic infrastructure, and deflection of bridge span variation is able to reflect the rigidity of structure, bullet
Property and overall work situation under load action of inelastic deformation and structure, be to determine bridge vertical rigidity, structural bearing
Power and mostly important one of the technical parameter of integrality performance of the structure.The method of deflection of bridge structure Long Period Health Monitoring is used and is swashed
Light image method is easy to appear shape since diffusion phenomena are more serious when apart from farther out for common dot laser transmitter launch spot
The problem of at random or cricoid hot spot.
Utility model content
The purpose of the utility model is to overcome above-mentioned the deficiencies in the prior art, provide a kind of for measuring bridge certain bits
The system for setting amount of deflection enhances the precision of observation amount of deflection variation on target by laser reflection expanding large deflection change degree.
Technical solution is as follows:
A kind of system for measuring bridge specific position amount of deflection, which is characterized in that by laser beam emitting device, monitoring point is swashed
Light reflecting device and laser receiver, in which:
The laser beam emitting device includes laser emitter, attitude-adjusting system and stabilizing base, is equipped with laser alignment dress
The laser emitter set is fixed on attitude-adjusting system, realizes the adjustment of angle and direction to be aligned by attitude-adjusting system
Monitoring point laser reflecting device on bridge carries out Laser emission, and attitude-adjusting system is fixed on stabilizing base；
The monitoring point laser reflecting device is made of plane mirror and concave mirror, and concave mirror is perpendicular to flat
Face reflecting mirror, plane mirror is for after emitting laser reflection to concave mirror, laser to be reflected again by concave mirror
To the laser receiver；
The laser receiver includes half reflection labeling projection target, for monitoring and the variation of recording laser hot spot and movement
Track.
Preferably, the stabilizing base bottom in the laser beam emitting device is provided with lead, and top is provided with damping balance dress
Set the stabilization to keep Laser emission.
Preferably, the laser emitter in the laser beam emitting device is semiconductor laser transmitter or solid state laser.
Preferably, the laser receiver further includes that the Image Acquisition positioned at half reflection labeling projection target dead astern is set
It is standby.
Preferably, the laser receiver further includes data processing and storage device.
When measuring deflection of bridge span, monitoring point laser reflecting device is fixed on to the deflection value to be measured on the outside of bridge structure
Bridge corresponds to pile No. position, and laser reflector is arranged in the conditional position in bank.When working condition, transmitting laser beam projects are arrived
In the laser reflecting device of monitoring point, laser signal is reflected on projection target and forms hot spot by reflection unit.Image capture device
It is placed in projection target dead astern, when bridge load changes (under bridge vehicle pass-through state), bridge structure is made in load
It is vertically and horizontally subjected to displacement under, the hot spot projected on target also corresponding can be subjected to displacement phenomenon.By considering to swash
The essential informations data such as optical transmitting set, the position coordinates of reflection unit and projection target three and height above sea level, by projection target
The amount of deflection variation at bridge survey point (reflection unit position) is analyzed and calculated to upper hot spot situation of change, thus intuitive anti-
Mirror the amount of deflection variation of the bridge structure tested point.Laser image method structure is relatively easy, easy for installation and equipment, construction and dimension
Shield cost is relatively inexpensive and precision is higher.
Detailed description of the invention
Fig. 1 uses schematic diagram for the system for measuring bridge specific position amount of deflection.
Fig. 2 is the structural schematic diagram of monitoring point laser reflecting device.
Appended drawing reference:
1- laser beam emitting device, the monitoring point 2- laser reflecting device, 3- laser receiver, 4- plane mirror and 5- are recessed
Face reflecting mirror.
Specific embodiment
To make those skilled in the art more fully understand the technical solution of the utility model, below with reference to embodiment to this
A kind of system for measuring bridge specific position amount of deflection that utility model provides is described in detail.Following embodiment is only used for
Illustrate the range that the utility model rather than limits the present invention.
Embodiment 1
A kind of system for measuring bridge specific position amount of deflection, by laser beam emitting device 1, monitoring point laser reflecting device
2 and laser receiver 3.
Laser beam emitting device 1 includes laser emitter, attitude-adjusting system and stabilizing base, is equipped with laser collimation device
Laser emitter is fixed on attitude-adjusting system, realizes the adjustment of angle and direction to be directed at bridge by attitude-adjusting system
On monitoring point laser reflecting device 2 carry out Laser emission, attitude-adjusting system is fixed on stabilizing base.
Monitoring point laser reflecting device 2 is made of plane mirror 4 and concave mirror 5, and 5 concave mirrors are perpendicular to flat
Face reflecting mirror 4, plane mirror 4 is for after emitting laser reflection to concave mirror 5, laser to pass through concave mirror 5 again
Reflex to the laser receiver 3.
Laser receiver 3 includes half reflection labeling projection target, for monitoring and the variation of recording laser hot spot and moving rail
Image capture device and data processing and storage device is arranged in mark, half reflection labeling projection target dead astern.
1 stabilizing base bottom is provided with the stable center of gravity of lead in laser beam emitting device, and top is provided with damping balancing device
To keep the stabilization of Laser emission.Laser emitter in laser beam emitting device 1 can be semiconductor laser transmitter or solid
Laser.
When measuring deflection of bridge span, the deflection value to be measured that monitoring point laser reflecting device 2 is fixed on the outside of bridge structure
Bridge correspond to pile No. position, laser reflecting device 1 is arranged in the conditional position in bank.When working condition, emit laser beam
It projects in monitoring point laser reflecting device 2, laser signal is reflected on projection target and forms hot spot by reflection unit.Image is adopted
Collection equipment is placed in projection target dead astern, and when bridge load changes (under bridge vehicle pass-through state), bridge structure exists
It is vertically and horizontally subjected to displacement under load action, the hot spot projected on target also corresponding can be subjected to displacement phenomenon.Pass through
The essential informations data such as laser emitter, the position coordinates of reflection unit and projection target three and height above sea level are considered, by throwing
The amount of deflection variation at bridge survey point (reflection unit position) is analyzed and calculated to hot spot situation of change on shadow target, thus directly
The amount of deflection variation for reflecting the bridge structure tested point seen.
It is explained in detail above in conjunction with example of the embodiment to the utility model, but the utility model is not limited to
Example is stated, within the knowledge of a person skilled in the art, the utility model aims can also not departed from
Under the premise of the various change made, also should be regarded as the protection scope of the utility model.
Claims (5)
1. a kind of system for measuring bridge specific position amount of deflection, which is characterized in that by laser beam emitting device, monitor dot laser
Reflection unit and laser receiver, in which:
The laser beam emitting device includes laser emitter, attitude-adjusting system and stabilizing base, is equipped with laser collimation device
Laser emitter is fixed on attitude-adjusting system, realizes the adjustment of angle and direction to be directed at bridge by attitude-adjusting system
On monitoring point laser reflecting device carry out Laser emission, attitude-adjusting system is fixed on stabilizing base；
The monitoring point laser reflecting device is made of plane mirror and concave mirror, and concave mirror is anti-perpendicular to plane
Mirror is penetrated, plane mirror is for after emitting laser reflection to concave mirror, laser to reflex to institute by concave mirror again
State laser receiver；
The laser receiver includes half reflection labeling projection target, for monitoring and the variation of recording laser hot spot and moving rail
Mark.
2. the system according to claim 1 for measuring bridge specific position amount of deflection, which is characterized in that the laser hair
Stabilizing base bottom in injection device is provided with lead, and top is provided with damping balancing device to keep the stabilization of Laser emission.
3. the system according to claim 1 for measuring bridge specific position amount of deflection, which is characterized in that the laser hair
Laser emitter in injection device is semiconductor laser transmitter or solid state laser.
4. according to claim 1 to the system described in any one in 3 for measuring bridge specific position amount of deflection, feature exists
In the laser receiver further includes the image capture device positioned at half reflection labeling projection target dead astern.
5. the system according to claim 4 for measuring bridge specific position amount of deflection, which is characterized in that the laser connects
Receiving apparatus further includes data processing and storage device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920064044.9U CN209247294U (en) | 2019-01-15 | 2019-01-15 | A kind of system for measuring bridge specific position amount of deflection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920064044.9U CN209247294U (en) | 2019-01-15 | 2019-01-15 | A kind of system for measuring bridge specific position amount of deflection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209247294U true CN209247294U (en) | 2019-08-13 |
Family
ID=67536232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920064044.9U Active CN209247294U (en) | 2019-01-15 | 2019-01-15 | A kind of system for measuring bridge specific position amount of deflection |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113340405A (en) * | 2021-07-09 | 2021-09-03 | 中铁七局集团有限公司 | Bridge vibration mode measuring method, device and system |
| CN115682978A (en) * | 2022-12-06 | 2023-02-03 | 北京路桥瑞通科技发展有限公司 | Deflection measuring device for bridge engineering |
| CN117387491A (en) * | 2023-12-11 | 2024-01-12 | 南京理工大学 | Binocular vision marker positioning device and method suitable for bridge girder erection machine |
-
2019
- 2019-01-15 CN CN201920064044.9U patent/CN209247294U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113340405A (en) * | 2021-07-09 | 2021-09-03 | 中铁七局集团有限公司 | Bridge vibration mode measuring method, device and system |
| CN115682978A (en) * | 2022-12-06 | 2023-02-03 | 北京路桥瑞通科技发展有限公司 | Deflection measuring device for bridge engineering |
| CN117387491A (en) * | 2023-12-11 | 2024-01-12 | 南京理工大学 | Binocular vision marker positioning device and method suitable for bridge girder erection machine |
| CN117387491B (en) * | 2023-12-11 | 2024-04-05 | 南京理工大学 | Binocular vision marker positioning device and method suitable for bridge girder erection machine |
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