CN110409267A - Surface evenness monitoring device and its detection method - Google Patents
Surface evenness monitoring device and its detection method Download PDFInfo
- Publication number
- CN110409267A CN110409267A CN201910738246.1A CN201910738246A CN110409267A CN 110409267 A CN110409267 A CN 110409267A CN 201910738246 A CN201910738246 A CN 201910738246A CN 110409267 A CN110409267 A CN 110409267A
- Authority
- CN
- China
- Prior art keywords
- bracket
- support arm
- pulley
- road surface
- monitoring device
- Prior art date
- 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.)
- Pending
Links
- 238000012806 monitoring device Methods 0.000 title claims abstract description 31
- 238000001514 detection method Methods 0.000 title claims abstract description 22
- 238000006073 displacement reaction Methods 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims description 12
- 238000010586 diagram Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/01—Devices or auxiliary means for setting-out or checking the configuration of new surfacing, e.g. templates, screed or reference line supports; Applications of apparatus for measuring, indicating, or recording the surface configuration of existing surfacing, e.g. profilographs
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The present invention relates to a kind of surface evenness monitoring device and its detection method, wherein device includes: on road surface and moveable bracket；It is articulated with the support arm of the bracket；It is connected to the bottom end of the support arm and the pulley for being slidedly arranged on the road surface, is rotated by support arm described in the pulley driving around hinged place；It is connected to the angular transducer of the support arm, the bracket inclined angle value of support arm when moving on the road surface is measured by the angular transducer, the pulley is obtained in the flatness on the displacement realization detection road surface of vertical direction by the angle value.The present invention first measures the inclined angle value of support arm using angular transducer, then calculates pulley again in the displacement of vertical direction, judges road surface with the presence or absence of protrusion and recess with this, if meet flatness requirement, it is easy to detect.
Description
Technical field
The present invention relates to the realm of building construction, espespecially a kind of surface evenness monitoring device and its detection method.
Background technique
What surface evenness reflected is the planarization of the section curve of vertical section of road surface.When the section curve of vertical section of road surface
When relative smooth, then it represents that road surface is opposed flattened or flatness is relatively good, on the contrary then indicate that flatness is relatively poor.It is high-grade
All there is influence to running speed, traffic safety, comfortable and vehicle ages of driving a vehicle in the flatness of highway pavement.
The construction that paves of top course construction is to carry out according to preset benchmark, and paver mostly has Automatic Levelling
Device, however the subsequent first pressing that paves, multiple pressure, final pressure process be easy to cause that the surface layer of road rises and falls and there are waves.
It generally requires in the prior art and is attached at pavement detection surface evenness with level meter again after the completion of road construction,
But level meter the flatness of road pavement can not be measured in real time during constructing progress, need to be returned if it does not meet the requirements
Work, inefficiency.
Summary of the invention
It is an object of the invention to overcome the deficiencies of existing technologies, a kind of surface evenness monitoring device and its detection are provided
Method, solution need to be attached at pavement detection surface evenness, nothing with level meter again after the completion of road construction in the prior art
Method construct carry out during road pavement flatness be measured in real time the problem of.
Realizing the technical solution of above-mentioned purpose is:
The present invention provides a kind of surface evenness monitoring device, comprising:
On road surface and moveable bracket；
It is articulated with the support arm of the bracket；
It is connected to the bottom end of the support arm and the pulley for being slidedly arranged on the road surface, by propping up described in the pulley driving
Brace is rotated around hinged place；And
It is connected to the angular transducer of the support arm, the bracket is measured on the road surface by the angular transducer
Support arm inclined angle value when upper mobile obtains the pulley by the angle value and realizes in the displacement of vertical direction
Detect the flatness on the road surface.
Surface evenness monitoring device of the present invention further improvement lies in that,
The bracket is fixed with the rangefinder of the moving distance for detecting the bracket.
Surface evenness monitoring device of the present invention further improvement lies in that,
The bracket is fixed with for according to the length computation of the inclined angle value of the support arm and the support arm
The data processor of the displacement in vertical direction of pulley, the data processor are connected with the angular transducer.
Surface evenness monitoring device of the present invention further improvement lies in that, the data processor includes:
The pulley according to the length computation of the inclined angle value of the support arm and the support arm in vertical direction
Displacement displacement unit；And
International roughness index is calculated in the displacement of vertical direction and the moving distance of the bracket according to the pulley
Index unit.
Surface evenness monitoring device of the present invention further improvement lies in that, the index unit includes:
Multiple positions in vertical direction of the pulley in the moving distance of the bracket are calculated according to accumulative of jolting
The accumulated value module of the accumulated value that jolts moved；And
According to multiple flatness differences demarcate road surface calculate regression coefficient coefficient module.
The present invention also provides a kind of detection methods using surface evenness monitoring device, include the following steps:
Bracket is moved on road surface, and the pulley is slidedly arranged on the road surface；And
The inclined angle value of the support arm in the bracket moving process is measured using angular transducer, by described
Angle value obtains the pulley in the displacement of vertical direction.
The detection method of surface evenness monitoring device of the present invention further improvement lies in that,
The fixed rangefinder of the bracket, the moving distance of the bracket is measured using rangefinder.
The detection method of surface evenness monitoring device of the present invention further improvement lies in that,
The pulley according to the length computation of the inclined angle value of the support arm and the support arm is in vertical direction
Displacement；
Multiple positions in vertical direction of the pulley in the moving distance of the bracket are calculated according to accumulative of jolting
The accumulated value that jolts moved；
Road surface, which is demarcated, according to multiple flatness differences calculates to obtain regression coefficient；And
According to the moving distance for the bracket that the rangefinder measures, accumulated value and the regression coefficient meter of jolting
Calculate international roughness index.
Surface evenness monitoring device and its detection method of the present invention the utility model has the advantages that
The present invention is by the way moving bracket, and pulley can occur perpendicular as the height on road surface rises and falls in the process
Histogram to displacement, by pulley driving support arm surround and bracket hinged place carry out circular motion, so the present apparatus utilize
The principle first measures the inclined angle value of support arm using angular transducer, then calculates pulley again in the position of vertical direction
It moves, judges road surface with the presence or absence of protrusion and recess with this, if meet flatness requirement, it is easy to detect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the detecting state of surface evenness monitoring device of the present invention.
Fig. 2 is the structural schematic diagram of surface evenness monitoring device of the present invention.
Fig. 3 and Fig. 4 is that the surface evenness monitoring device of the present invention support arm of corresponding position when moving on road surface inclines
The schematic diagram of rake angle.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples.
Refering to fig. 1, it is shown that the structural schematic diagram of the detecting state of surface evenness monitoring device of the present invention.Fig. 2 is this
The structural schematic diagram of invention surface evenness monitoring device.In conjunction with shown in Fig. 1 to Fig. 2, surface evenness monitoring device of the present invention
Include:
On road surface 1 and moveable bracket 10；
It is articulated with 10 support arm 20 of bracket；
It is connected to the bottom end of the support arm 20 and the pulley 30 for being slidedly arranged on the road surface 1, passes through 30 band of pulley
The support arm 20 is moved to be rotated around hinged place；And
It is connected to the angular transducer 40 of the support arm 20, the bracket 10 is measured in institute by the angular transducer
The support arm 20 inclined angle value when moving on road surface 1 is stated, the pulley 30 is obtained in vertical side by the angle value
To displacement realize and detect the flatness on the road surface 1.
The present invention on road surface 1 by moving bracket 10, and pulley 30 can rise and fall with the height on road surface 1 in the process
And the displacement of vertical direction occurs, it drives support arm 20 to surround with the hinged place of bracket 10 by pulley 30 and carries out circular motion,
So the present apparatus first measures the tilt angle of support arm 20 using the principle using angular transducer 40, pulley is then calculated again
30 height change value judges road surface 1 with the presence or absence of protrusion and recess, if to meet flatness requirement with this.
In the present embodiment, bracket 10 is that fashioned iron welds the rectangular frame to be formed, 4.0 meters long.Opposite the two of rectangular frame
Bar is equipped with universal wheel, mobile convenient for bracket 10.
Further, universal wheel is located at the opposite sides and not on the same line of pulley 30, i.e., universal wheel is located to road
The opposite sides of longitudinal Section line of 30 position of pulley on road, the surface conditions where preventing universal wheel influence detection pulley
The flatness on the road surface where 30.
Further, the opposite sides of bracket 10 is equipped with drawknot plate, for loading corresponding weight body to guarantee that bracket 10 exists
Use holding balance in preceding and detection process.
It is the support arm of surface evenness monitoring device corresponding position when being moved on road surface of the present invention refering to Fig. 3 and Fig. 4
Tilt angle schematic diagram.In conjunction with shown in Fig. 1 to Fig. 4, the bracket 10 be fixed with the movement for detecting the bracket 10 away from
From rangefinder 60.Using the wheeled type distance measuring apparatus of market purchasing, precision 0.01m.Wheeled type distance measuring apparatus passes through two batteries
Power supply.In the present embodiment, it is fixed between opposite two bars of bracket 10 by drawknot bar.Rangefinder 60 is fixed together drawknot bar
On.
The bracket 10 is fixed with for the length gauge according to the support arm 20 inclined angle value and the support arm 20
The data processor 50 of displacement of the pulley 30 in vertical direction is calculated, the data processor 50 and the angular transducer connect
It connects.The connecting rod of opposite two vertical bars of two vertical bars and lateral connection is vertically equipped on bracket 10.
The data processor 50 includes:
The pulley according to the length computation of the inclined angle value of the support arm 20 and the support arm 20 vertical
The displacement unit of the displacement in direction；And
International flatness is calculated in the displacement of vertical direction and the moving distance of the bracket 10 according to the pulley 30
The index unit of index.
The index unit includes:
The multiple in vertical direction of the pulley 30 in the moving distance of the bracket are calculated according to accumulative of jolting
The accumulated value module of the accumulated value that jolts of displacement；And
According to multiple flatness differences demarcate road surface calculate regression coefficient coefficient module.
The bracket 10 is fixed with the signal processor 51 for carrying out signal processing to angular transducer.
The present apparatus further includes the display screen for showing data, and the display screen and the data processor 50 connect.Pass through
Display screen shows the data processed result of data processor 50.
Specifically, support arm 10 is rotated around articulated position, and angular transducer 40 measures the inclination angle value of support arm 10,
And the inclination angle value is transmitted to signal processor 51 and data processor 50, data processor 50 passes through known support arm 10
Length, that is, radius of turn, calculated by trigonometric function, displacement of the pulley 30 in vertical direction: Δ=COS (A1)-COS (A2)
Wherein, Δ is displacement of the pulley 30 in vertical direction；Angle of support arm 10 and vertical direction when road surface is some of pulley 30
Angle value is A1；The angle value of the angle of support arm 10 and vertical direction in road surface another point of pulley 30 is A2.
Pulley 30 has positive and negative two as a result, when Δ is positive value in the displacement of vertical direction, and the road surface the B road surface ratio A is high, and Δ is
When negative value, the road surface the B road surface ratio A is low.
Further, it if pulley 30 can be set in displacement≤0.5mm of vertical direction, is not counted at detection data
Reason such as finds Δ > 0.5mm, needs will test data value input signal processor 51 and data processor 50.
Further, digitization analysis can be carried out by the displacement by 50 pulley 30 of data processor in vertical direction.
It is shown in table form on a display screen.Specifically, with accumulative of jolting, by pulley 30 vertical direction displacement
Δ carries out jolt accumulated value VBI calculating and international roughness index calculating according to certain operational formula.Its calculation formula
It is as follows: VBI=Σ | Δ | ÷ L1 (cm/km), IRI=(a+b) VBI (m/km), wherein VBI is the accumulated value that jolts；IRI is
International roughness index；Travel distance by stadia surveying bracket 10 is L1.A and b is regression coefficient.A and b can by with
Lower method is calculated:
Selected calibration section, calibration section should meet following requirement:
(1) 1. there is the existing road of 5~6 sections of different flatness, different degrees of from getting well to going bad all should respectively have one section.2. every
Segment length is preferably 250~330m.3. each section of flatness should uniformly, should be without too big difference in section.4. calibration section should select longitudinal slope
Change lesser flat, straight line location.5. selecting the section that the volume of traffic is small or can dredge, the interference of vehicle when reducing calibration.
(2) selected calibration section is made a mark every 0.25m.
(3) it is measured respectively with the precision level by calibration every the elevation on 0.25m punctuate on each section.
(4) test result in each section is obtained with the device to test.
(5) by the international roughness index in each section and the accumulated value Σ that jolts | Δ | it draws out curve and is returned
Return analysis, establishes correlativity you can get it the numerical value of regression coefficient a and b.
It is proposed that IRI evaluation criterion reference value is as follows according to various regions actual conditions:
The present invention also provides a kind of detection methods of surface evenness monitoring device, include the following steps:
Bracket 10 is mobile on road surface 1, and the pulley 30 is slidedly arranged on the road surface；And
The inclined angle value of support arm 20 in 10 moving process of bracket is measured using angular transducer, by described
Angle value obtains the displacement in vertical direction of the pulley 30.In the present embodiment, the fixed rangefinder 60 of the bracket 10, benefit
The moving distance of the bracket 10 is measured with rangefinder 60.
Detection method of the invention further include:
The pulley 30 according to the length computation of the inclined angle value of the support arm 20 and the support arm 20 is vertical
The displacement in direction；
The multiple in vertical direction of the pulley 30 in the moving distance of the bracket 10 are calculated according to accumulative of jolting
Displacement the accumulated value that jolts；
Road surface, which is demarcated, according to multiple flatness differences calculates to obtain regression coefficient；And
According to the moving distance for the bracket 10 that the rangefinder 60 measures, accumulated value and the recurrence system of jolting
Number calculates international roughness index.
Surface evenness monitoring device and its detection method of the present invention have the beneficial effect that
The present invention is by the way moving bracket, and pulley can occur perpendicular as the height on road surface rises and falls in the process
Histogram to displacement, by pulley driving support arm surround and bracket hinged place carry out circular motion, so the present apparatus utilize
The principle first measures the inclined angle value of support arm using angular transducer, then calculates pulley again in the position of vertical direction
It moves, judges road surface with the presence or absence of protrusion and recess with this, if meet flatness requirement, it is easy to detect.
The present invention has been described in detail with reference to the accompanying drawings, those skilled in the art can be according to upper
It states and bright many variations example is made to the present invention.Thus, certain details in embodiment should not constitute limitation of the invention, this
Invention will be using the range that the appended claims define as protection scope of the present invention.
Claims (8)
1. a kind of surface evenness monitoring device characterized by comprising
On road surface and moveable bracket；
It is articulated with the support arm of the bracket；
It is connected to the bottom end of the support arm and the pulley for being slidedly arranged on the road surface, passes through support arm described in the pulley driving
It is rotated around hinged place；And
It is connected to the angular transducer of the support arm, the bracket is measured by the angular transducer and is moved up on the road surface
Support arm inclined angle value when dynamic obtains the pulley by the angle value and realizes detection in the displacement of vertical direction
The flatness on the road surface.
2. surface evenness monitoring device as described in claim 1, which is characterized in that
The bracket is fixed with the rangefinder of the moving distance for detecting the bracket.
3. surface evenness monitoring device as described in claim 1, which is characterized in that
The bracket is fixed with for the pulley according to the length computation of the inclined angle value of the support arm and the support arm
The displacement in vertical direction data processor, the data processor connects with the angular transducer.
4. surface evenness monitoring device as claimed in claim 3, which is characterized in that the data processor includes:
The position in vertical direction of the pulley according to the length computation of the inclined angle value of the support arm and the support arm
The displacement unit of shifting；And
The finger of international roughness index is calculated in the displacement of vertical direction and the moving distance of the bracket according to the pulley
Counting unit.
5. surface evenness monitoring device as claimed in claim 4, which is characterized in that the index unit includes:
Multiple displacements in vertical direction of the pulley in the moving distance of the bracket are calculated according to accumulative of jolting
It jolts the accumulated value module of accumulated value；And
According to multiple flatness differences demarcate road surface calculate regression coefficient coefficient module.
6. a kind of detection method using surface evenness monitoring device described in claim 1, which is characterized in that including as follows
Step:
Bracket is moved on road surface, and the pulley is slidedly arranged on the road surface；And
The inclined angle value of the support arm in the bracket moving process is measured using angular transducer, passes through the angle
Value obtains the pulley in the displacement of vertical direction.
7. the detection method of surface evenness monitoring device as claimed in claim 6, which is characterized in that
The fixed rangefinder of the bracket, the moving distance of the bracket is measured using rangefinder.
8. the detection method of surface evenness monitoring device as claimed in claim 7, which is characterized in that further include:
Displacement of the pulley according to the length computation of the inclined angle value of the support arm and the support arm in vertical direction；
Multiple displacements in vertical direction of the pulley in the moving distance of the bracket are calculated according to accumulative of jolting
Jolt accumulated value；
Road surface, which is demarcated, according to multiple flatness differences calculates to obtain regression coefficient；And
According to the moving distance for the bracket that the rangefinder measures, accumulated value and the regression coefficient calculating state of jolting
Border flatness index.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910738246.1A CN110409267A (en) | 2019-08-12 | 2019-08-12 | Surface evenness monitoring device and its detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910738246.1A CN110409267A (en) | 2019-08-12 | 2019-08-12 | Surface evenness monitoring device and its detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110409267A true CN110409267A (en) | 2019-11-05 |
Family
ID=68367115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910738246.1A Pending CN110409267A (en) | 2019-08-12 | 2019-08-12 | Surface evenness monitoring device and its detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110409267A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110715643A (en) * | 2019-11-18 | 2020-01-21 | 上海宝冶市政工程有限公司 | Road longitudinal section elevation continuous measurement device |
| KR20200106013A (en) * | 2020-08-24 | 2020-09-10 | 주식회사 경호엔지니어링 종합건축사사무소 | Displacement measuring Unit |
| CN112227161A (en) * | 2020-08-24 | 2021-01-15 | 河南牛帕力学工程研究院 | Road surface flatness measuring device and inclination measurer |
| CN112227160A (en) * | 2020-08-24 | 2021-01-15 | 河南牛帕力学工程研究院 | Road surface flatness measuring method |
| CN113701703A (en) * | 2021-08-19 | 2021-11-26 | 重庆交通大学 | Highway road surface roughness dipperstick |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09170922A (en) * | 1995-12-20 | 1997-06-30 | Fujita Corp | Simple measuring instrument for unevenness degree |
| US20020073566A1 (en) * | 2000-12-20 | 2002-06-20 | Kouichi Suzuki | Running type road surface shape measuring apparatus |
| CN1384245A (en) * | 2001-04-29 | 2002-12-11 | 陆键 | Automatic surface section instrument for detecting road surface flatness and its detection method |
| CN101251380A (en) * | 2008-03-24 | 2008-08-27 | 山东省交通科学研究所 | Follow-up type push planeness measuring apparatus |
| CN104674637A (en) * | 2015-02-04 | 2015-06-03 | 天津大学 | Real-time monitoring device for pavement paving thickness and ironing vibration frequency |
| CN210712470U (en) * | 2019-08-12 | 2020-06-09 | 中国建筑第八工程局有限公司 | Road surface flatness detection device |
-
2019
- 2019-08-12 CN CN201910738246.1A patent/CN110409267A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09170922A (en) * | 1995-12-20 | 1997-06-30 | Fujita Corp | Simple measuring instrument for unevenness degree |
| US20020073566A1 (en) * | 2000-12-20 | 2002-06-20 | Kouichi Suzuki | Running type road surface shape measuring apparatus |
| CN1384245A (en) * | 2001-04-29 | 2002-12-11 | 陆键 | Automatic surface section instrument for detecting road surface flatness and its detection method |
| CN101251380A (en) * | 2008-03-24 | 2008-08-27 | 山东省交通科学研究所 | Follow-up type push planeness measuring apparatus |
| CN104674637A (en) * | 2015-02-04 | 2015-06-03 | 天津大学 | Real-time monitoring device for pavement paving thickness and ironing vibration frequency |
| CN210712470U (en) * | 2019-08-12 | 2020-06-09 | 中国建筑第八工程局有限公司 | Road surface flatness detection device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110715643A (en) * | 2019-11-18 | 2020-01-21 | 上海宝冶市政工程有限公司 | Road longitudinal section elevation continuous measurement device |
| KR20200106013A (en) * | 2020-08-24 | 2020-09-10 | 주식회사 경호엔지니어링 종합건축사사무소 | Displacement measuring Unit |
| KR102191674B1 (en) | 2020-08-24 | 2020-12-17 | 주식회사 경호엔지니어링 종합건축사사무소 | Displacement measuring Unit |
| CN112227161A (en) * | 2020-08-24 | 2021-01-15 | 河南牛帕力学工程研究院 | Road surface flatness measuring device and inclination measurer |
| CN112227160A (en) * | 2020-08-24 | 2021-01-15 | 河南牛帕力学工程研究院 | Road surface flatness measuring method |
| CN113701703A (en) * | 2021-08-19 | 2021-11-26 | 重庆交通大学 | Highway road surface roughness dipperstick |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110409267A (en) | Surface evenness monitoring device and its detection method | |
| CN101644023B (en) | Detection method of road-surface evenness | |
| CN102277823B (en) | Vehicle-mounted pavement detection system based on inertia measurement unit and laser range finder | |
| CN101619968B (en) | Method and device for detecting road surface planeness | |
| CN201297927Y (en) | Automobile outline size measuring machine | |
| CN101251380B (en) | Follow-up type push planeness measuring apparatus | |
| CN102162217A (en) | Laser dynamic deflection survey vehicle | |
| CN205981099U (en) | A measure dolly for work piece non -contact traverse measurement | |
| CN201110756Y (en) | Apparatus for measuring continuous vertical deflection / displacement | |
| CN207923115U (en) | A kind of subgrade settlement monitoring device | |
| CN204286379U (en) | A kind of device for measuring surface evenness | |
| CN208536794U (en) | A kind of hand propelled laser detector of exportable multiple road roughness index | |
| CN213233078U (en) | Municipal works pave small area roughness detection device with pitch | |
| CN201530980U (en) | Pavement flatness checking device | |
| CN109680592A (en) | A kind of vehicle-mounted road surface detection device and method based on inertia measurement and radar range finding | |
| CN214793138U (en) | Road surface cross slope detection device | |
| CN206627058U (en) | A kind of intelligent sensoring for measuring flatness | |
| CN211042103U (en) | Wave form roof beam center height detection device | |
| CN210712470U (en) | Road surface flatness detection device | |
| CN108611954A (en) | Ground flat degree measures AGV and measurement method | |
| CN104101322A (en) | Surface roughness measuring system and method based on successive two-angle method | |
| CN204694246U (en) | A kind of highway longitudinal gradient data measurement unit | |
| CN207537851U (en) | A kind of asphalt-spreader paving thickness real-time detection apparatus | |
| CN211621123U (en) | Real-time asphalt paving thickness detection device | |
| CN114045754A (en) | Method for monitoring vertical displacement of gravity center of hanging basket for bridge cantilever construction in real time |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191105 |
|
| RJ01 | Rejection of invention patent application after publication |