CN107817298A - A kind of construction engineering quality detection means - Google Patents
A kind of construction engineering quality detection means Download PDFInfo
- Publication number
- CN107817298A CN107817298A CN201710998943.1A CN201710998943A CN107817298A CN 107817298 A CN107817298 A CN 107817298A CN 201710998943 A CN201710998943 A CN 201710998943A CN 107817298 A CN107817298 A CN 107817298A
- Authority
- CN
- China
- Prior art keywords
- detection means
- quality detection
- construction engineering
- engineering quality
- ultrasonic probe
- 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.)
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/225—Supports, positioning or alignment in moving situation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
- G01N29/265—Arrangements for orientation or scanning by relative movement of the head and the sensor by moving the sensor relative to a stationary material
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/0289—Internal structure, e.g. defects, grain size, texture
Abstract
The invention discloses a kind of construction engineering quality detection means,Including base,Base upper end side is provided with hydraulic cylinder,Hydraulic cylinder upper end is provided with horizontally disposed slide,Limit sliding chutes are provided with slide,Threaded rod is provided with limit sliding chutes,Thread slider is provided with limit sliding chutes,Thread slider is arranged on threaded rod,Thread slider lower end is provided with movable stand,Movable stand lower end is provided with electric pushrod,Electric pushrod lower end is provided with link,Link lower end is provided with the horizontally disposed support having,Pedestal lower end is provided with ultrasonic probe,Ultrasonic probe connects data collector by data wire,Data collector connects mainframe box,Stabilized structure of the present invention,It is stable,Automatic motion can be realized,With remote control function,Quickly construction ceiling can be detected,Detection efficiency is high,Meet present requirement.
Description
Technical field
The present invention relates to a kind of architectural engineering detection device, specifically a kind of construction engineering quality detection means.
Background technology
Architectural engineering, refer to by the construction to all kinds of building constructions and its affiliated facility and the circuit supporting with it, pipeline,
The engineering entity that the installation activity of equipment is formed.Wherein " building construction ", which refers to, top cover, beam column, wall, basis and can
Inner space is formed, meets people's production, lives, learns, the engineering of public activity needs.
Civil engineering course teaching steering committee divides into civil engineering, architectural environment and energy source use engineering, discharge hydroscience
Opened with engineering, architectural electricity and intellectuality, architecture, urban and rural planning, Landscape, engineering management and construction costs, real estate
Hair and management and 9 disciplines steering committees of estate management（The hereinafter referred to as specialized guidance committee）, it is corresponding《Institution of higher education
Bachelor degree catalogue》In building class, Building class, Management Science and Engineering class（Part）With industrial and commercial administration class（Part）11 specially
Industry.
, everywhere can be in the architectural engineering in construction in our life, road construction, bridge construction, building construction,
, it is necessary to use a variety of different building appliances in these architectural engineerings, particularly, it is necessary to building in present building is built
Top surface carries out quality testing, is typically now all to be detected by man-hour manually hand-held supersonic detector, efficiency is too low, Er Qiejian
Survey personnel, which climb up, climbs down more danger, it is impossible to meets present requirement.
The content of the invention
It is an object of the invention to provide a kind of construction engineering quality detection means, to solve to propose in above-mentioned background technology
The problem of.
To achieve the above object, the present invention provides following technical scheme：
A kind of construction engineering quality detection means, including base, base upper end side are provided with hydraulic cylinder, hydraulic cylinder upper end
Horizontally disposed slide is provided with, limit sliding chutes are provided with slide, threaded rod is provided with limit sliding chutes, is set in limit sliding chutes
Thread slider is equipped with, thread slider is arranged on threaded rod, and thread slider lower end is provided with movable stand, and movable stand lower end is provided with
Electric pushrod, electric pushrod lower end are provided with link, and link lower end is provided with the horizontally disposed support having, and pedestal lower end is set
Ultrasonic probe is equipped with, ultrasonic probe connects data collector, data collector connection mainframe box by data wire.
As the further scheme of the present invention：The base lower end is provided with roller, and the roller includes driving wheel, actively
Wheel connection driving gearbox.
As the further scheme of the present invention：Motor, motor connection main frame are housed on the driving gearbox
Case.
As the further scheme of the present invention：The hydraulic cylinder is multistage hydraulic cylinder assembly, hydraulic cylinder connection hydraulic pump and
Hydraulic oil container and hydraulic control device, hydraulic control device connection mainframe box.
As the further scheme of the present invention：Described threaded rod one end connects gearbox, and servomotor is housed on gearbox,
Servomotor connects mainframe box.
As the further scheme of the present invention：The ultrasonic probe is provided with multiple, and ultrasonic probe is placed equidistant
On support, protective cover is provided with ultrasonic probe.
As the further scheme of the present invention：The electric pushrod is spacing electric pushrod, and electric pushrod connects mainframe box.
As the further scheme of the present invention：Control cabinet and supersonic detector, ultrasonic wave are provided with the mainframe box
Defectoscope connects ultrasonic probe.
As the further scheme of the present invention：It is provided with main control module in the control cabinet, data memory module and wireless
Signal transmission module, main control module connection data memory module and wireless signal transmission module.
As the further scheme of the present invention：Balancing weight is provided with the base.
Compared with prior art, the beneficial effects of the invention are as follows：Stabilized structure of the present invention, it is stable, it can realize certainly
Dynamic motion, has remote control function, quickly construction ceiling can be detected, and detection efficiency is high, meets present make
With requiring.
Brief description of the drawings
Fig. 1 is the structural representation of construction engineering quality detection means；
Fig. 2 is the partial enlarged drawing of construction engineering quality detection means.
In figure：1- slides, 2- limit sliding chutes, 3- thread sliders, 4- threaded rods, 5- movable stands, 6- data wires, 7- data are received
Storage, 8- gearboxes, 9- servomotors, 10- hydraulic cylinders, 11- bases, 12- balancing weights, 13- drivings gearbox, 14- driving electricity
Machine, 15- mainframe boxes, 16- rollers, 17- electric pushrods, 18- links, 19- protective covers, 20- ultrasonic probes, 21- supports.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Refer to Fig. 1-2, in the embodiment of the present invention, a kind of construction engineering quality detection means, including base 11, the bottom
11 upper end sides of seat are provided with hydraulic cylinder 10, and the upper end of hydraulic cylinder 10 is provided with horizontally disposed slide 1, set in slide 1 limited
Position chute 2, is provided with threaded rod 4 in limit sliding chutes 2, thread slider 3 is provided with limit sliding chutes 2, thread slider 3 is arranged on spiral shell
On rasp bar 4, the lower end of thread slider 3 is provided with movable stand 5, and the lower end of movable stand 5 is provided with electric pushrod 17, the lower end of electric pushrod 17
Link 18 is provided with, the lower end of link 18 is provided with the horizontally disposed support 21 having, and the lower end of support 21 is provided with ultrasonic wave spy
First 20, ultrasonic probe 20 connects data collector 7 by data wire 6, and data collector 7 connects mainframe box 15, under base 11
End is provided with roller 16, and the roller 16 includes driving wheel, driving wheel connection driving gearbox 13, drives and be equipped with gearbox 13
Motor 14, motor 14 connect mainframe box 15, and hydraulic cylinder 10 is multistage hydraulic cylinder assembly, and hydraulic cylinder 10 connects hydraulic pump
With hydraulic oil container and hydraulic control device, hydraulic control device connection mainframe box 15, the one end of threaded rod 4 connection gearbox 8, become
Servomotor 9 is housed, servomotor 9 connects mainframe box 15, and ultrasonic probe 20 is provided with multiple, ultrasonic probe on fast case 8
20 are placed equidistant on the stent 21, and protective cover 19 is provided with ultrasonic probe 20, and electric pushrod 17 is spacing electric pushrod, electricity
Dynamic push rod 17 connects mainframe box 15, and control cabinet and supersonic detector are provided with mainframe box 15, and supersonic detector connection is super
Sonic probe 20, main control module, data memory module and wireless signal transmission module, main control module connection are provided with control cabinet
Data memory module and wireless signal transmission module, balancing weight 12 is provided with base 11.
The present invention is in the design by base 11, and the design of roller 16 and driving gearbox 13, realizes automatic shifting
Dynamic function, by mainframe box 15, realizes remote control, by the design of hydraulic cylinder 10, realizes elevating function, passes through servo electricity
Machine 9 and gearbox 8 drive threaded rod 4 to rotate, and realize the driving locomotive function of thread slider 3, realize the liter of driving ultrasonic probe
Drop and locomotive function, by the design of electric pushrod 17, the fine adjustment function of driving ultrasonic probe 20 is realized, ensures detection effect
Fruit, by the design of balancing weight 12, the stabilization for ensureing the present invention is realized, stabilized structure of the present invention is stable, can realize certainly
Dynamic motion, has remote control function, quickly construction ceiling can be detected, and detection efficiency is high, meets present make
With requiring.
Embodiment 1（Detection to general rise buildings）
In the embodiment of the present invention, a kind of construction engineering quality detection means, including base 11, the upper end side of base 11 are set
There is hydraulic cylinder 10, the upper end of hydraulic cylinder 10 is provided with horizontally disposed slide 1, limit sliding chutes 2, limit sliding chutes 2 are provided with slide 1
Threaded rod 4 is inside provided with, thread slider 3 is provided with limit sliding chutes 2, thread slider 3 is arranged on threaded rod 4, thread slider 3
Lower end is provided with movable stand 5, and the lower end of movable stand 5 is provided with electric pushrod 17, and the lower end of electric pushrod 17 is provided with link 18, even
Connect the lower end of frame 18 and be provided with the horizontally disposed support 21 having, the lower end of support 21 is provided with ultrasonic probe 20, ultrasonic probe 20
Data collector 7 is connected by data wire 6, data collector 7 connects mainframe box 15, and the lower end of base 11 is provided with roller 16, institute
Stating roller 16 includes driving wheel, driving wheel connection driving gearbox 13, drives and motor 14 is housed on gearbox 13, driving electricity
Machine 14 connects mainframe box 15, and hydraulic cylinder 10 is multistage hydraulic cylinder assembly, and hydraulic cylinder 10 connects hydraulic pump and hydraulic oil container and liquid
Pressure control device, hydraulic control device connection mainframe box 15, the one end of threaded rod 4 connects gearbox 8, servo is housed on gearbox 8
Motor 9, servomotor 9 connect mainframe box 15, and ultrasonic probe 20 is provided with multiple, and ultrasonic probe 20 is placed equidistant in support
On 21, protective cover 19 is provided with ultrasonic probe 20, electric pushrod 17 is spacing electric pushrod, and electric pushrod 17 connects main frame
Case 15, control cabinet and supersonic detector, supersonic detector connection ultrasonic probe 20, control cabinet are provided with mainframe box 15
Inside it is provided with main control module, data memory module and wireless signal transmission module, main control module connection data memory module and nothing
Line signal transmission module, balancing weight 12 is provided with base 11.
Base 11 is moved to be detected architectural, and hydraulic cylinder 10 shrinks, and electric pushrod 17 drives ultrasonic probe 20 to decline,
So that ultrasonic probe, which is pressed close to, builds surface, base movement, detected, after a stroke detection is completed, threaded rod driving
Ultrasonic probe is walked one laterally detects stroke, and base is detected, realizes quick detection function in movement.
Embodiment 2（Detection to higher building）
In the embodiment of the present invention, a kind of construction engineering quality detection means, including base 11, the upper end side of base 11 are set
There is hydraulic cylinder 10, the upper end of hydraulic cylinder 10 is provided with horizontally disposed slide 1, limit sliding chutes 2, limit sliding chutes 2 are provided with slide 1
Threaded rod 4 is inside provided with, thread slider 3 is provided with limit sliding chutes 2, thread slider 3 is arranged on threaded rod 4, thread slider 3
Lower end is provided with movable stand 5, and the lower end of movable stand 5 is provided with electric pushrod 17, and the lower end of electric pushrod 17 is provided with link 18, even
Connect the lower end of frame 18 and be provided with the horizontally disposed support 21 having, the lower end of support 21 is provided with ultrasonic probe 20, ultrasonic probe 20
Data collector 7 is connected by data wire 6, data collector 7 connects mainframe box 15, and the lower end of base 11 is provided with roller 16, institute
Stating roller 16 includes driving wheel, driving wheel connection driving gearbox 13, drives and motor 14 is housed on gearbox 13, driving electricity
Machine 14 connects mainframe box 15, and hydraulic cylinder 10 is multistage hydraulic cylinder assembly, and hydraulic cylinder 10 connects hydraulic pump and hydraulic oil container and liquid
Pressure control device, hydraulic control device connection mainframe box 15, the one end of threaded rod 4 connects gearbox 8, servo is housed on gearbox 8
Motor 9, servomotor 9 connect mainframe box 15, and ultrasonic probe 20 is provided with multiple, and ultrasonic probe 20 is placed equidistant in support
On 21, protective cover 19 is provided with ultrasonic probe 20, electric pushrod 17 is spacing electric pushrod, and electric pushrod 17 connects main frame
Case 15, control cabinet and supersonic detector, supersonic detector connection ultrasonic probe 20, control cabinet are provided with mainframe box 15
Inside it is provided with main control module, data memory module and wireless signal transmission module, main control module connection data memory module and nothing
Line signal transmission module, balancing weight 12 is provided with base 11.
Base 11 is moved to be detected architectural, and hydraulic cylinder 10 rises, and electric pushrod 17 drives ultrasonic probe 20 to finely tune,
So that ultrasonic probe presses close to top of high-rise buildings surface, base movement, detected, after a stroke detection is completed, spiral shell
Rasp bar driving ultrasonic probe is walked one and detects stroke laterally, and base is detected, realizes quick detection work(in movement
Energy.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than instruction or dark
Show that the device of meaning or element there must be specific orientation, with specific azimuth configuration and operation, thus it is it is not intended that right
The limitation of the present invention.In addition, term " first ", " second " etc. are only used for describing purpose, and it is not intended that instruction or hint phase
To importance or the implicit quantity for indicating indicated technical characteristic.Thus, the feature for defining " first ", " second " etc. can
To express or implicitly include one or more this feature.In the description of the invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the involved claim of limitation.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It is appreciated that other embodiment.
Claims (10)
1. a kind of construction engineering quality detection means, including base（11）, it is characterised in that the base（11）Upper end side is set
It is equipped with hydraulic cylinder（10）, hydraulic cylinder（10）Upper end is provided with horizontally disposed slide（1）, slide（1）Inside it is provided with limit sliding chutes
（2）, limit sliding chutes（2）Inside it is provided with threaded rod（4）, limit sliding chutes（2）Inside it is provided with thread slider（3）, thread slider（3）If
Put in threaded rod（4）On, thread slider（3）Lower end is provided with movable stand（5）, movable stand（5）Lower end is provided with electric pushrod
（17）, electric pushrod（17）Lower end is provided with link（18）, link（18）Lower end is provided with the horizontally disposed support having
（21）, support（21）Lower end is provided with ultrasonic probe（20）, ultrasonic probe（20）Pass through data wire（6）Connect Data Collection
Device（7）, data collector（7）Connect mainframe box（15）.
2. construction engineering quality detection means according to claim 1, it is characterised in that the base（11）Lower end is set
There is roller（16）, the roller（16）Including driving wheel, driving wheel connection driving gearbox（13）.
3. construction engineering quality detection means according to claim 2, it is characterised in that the driving gearbox（13）On
Equipped with motor（14）, motor（14）Connect mainframe box（15）.
4. construction engineering quality detection means according to claim 1, it is characterised in that the hydraulic cylinder（10）For multistage
Hydraulic cylinder device, hydraulic cylinder（10）Connect hydraulic pump and hydraulic oil container and hydraulic control device, hydraulic control device connection master
Cabinet（15）.
5. construction engineering quality detection means according to claim 1, it is characterised in that the threaded rod（4）One end connects
Connect gearbox（8）, gearbox（8）It is upper that servomotor is housed（9）, servomotor（9）Connect mainframe box（15）.
6. construction engineering quality detection means according to claim 1, it is characterised in that the ultrasonic probe（20）If
It is equipped with multiple, ultrasonic probe（20）It is placed equidistant in support（21）On, ultrasonic probe（20）On be provided with protective cover（19）.
7. construction engineering quality detection means according to claim 1, it is characterised in that the electric pushrod（17）It is limited
Position electric pushrod, electric pushrod（17）Connect mainframe box（15）.
8. construction engineering quality detection means according to claim 1, it is characterised in that the mainframe box（15）Interior setting
There are control cabinet and supersonic detector, supersonic detector connection ultrasonic probe（20）.
9. construction engineering quality detection means according to claim 8, it is characterised in that be provided with master in the control cabinet
Control module, data memory module and wireless signal transmission module, main control module connection data memory module and transmission of wireless signals
Module.
10. construction engineering quality detection means according to claim 1, it is characterised in that the base（11）Upper setting
There is balancing weight（12）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710998943.1A CN107817298A (en) | 2017-10-24 | 2017-10-24 | A kind of construction engineering quality detection means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710998943.1A CN107817298A (en) | 2017-10-24 | 2017-10-24 | A kind of construction engineering quality detection means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107817298A true CN107817298A (en) | 2018-03-20 |
Family
ID=61608319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710998943.1A Pending CN107817298A (en) | 2017-10-24 | 2017-10-24 | A kind of construction engineering quality detection means |
Country Status (1)
| Country | Link |
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| CN (1) | CN107817298A (en) |
Citations (9)
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| US3631714A (en) * | 1969-11-20 | 1972-01-04 | Bethlehem Steel Corp | Ultrasonic inspection probe |
| CN1924534A (en) * | 2005-08-29 | 2007-03-07 | 李海军 | Method for detection and stopping leak for concrete buildings leakage source |
| CN201740767U (en) * | 2010-02-10 | 2011-02-09 | 冯严波 | Vehicle-mounted movable type dry-coupling semiautomatic ultrasonic flaw detector |
| CN102279224A (en) * | 2011-03-08 | 2011-12-14 | 中国航空工业集团公司北京航空制造工程研究所 | Adaptive ultrasonic tracking and scanning array transducer |
| CN105003087A (en) * | 2015-06-08 | 2015-10-28 | 江苏鼎达建筑新技术有限公司 | Ground hollow detection and repair method based on infrared imaging |
| CN105467007A (en) * | 2015-12-04 | 2016-04-06 | 四川兴天源材料检测技术有限公司 | Airplane leading edge detection device |
| CN105672692A (en) * | 2016-04-01 | 2016-06-15 | 山东国兴智能科技有限公司 | Full-automatic roof leakage finding and repairing robot and leakage finding and repairing method |
| CN205404487U (en) * | 2016-03-10 | 2016-07-27 | 沈阳大学 | Quality of building engineering detector |
| CN206233098U (en) * | 2016-11-16 | 2017-06-09 | 安徽师范大学 | A kind of viaduct bridge guardrail detects car |
-
2017
- 2017-10-24 CN CN201710998943.1A patent/CN107817298A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3631714A (en) * | 1969-11-20 | 1972-01-04 | Bethlehem Steel Corp | Ultrasonic inspection probe |
| CN1924534A (en) * | 2005-08-29 | 2007-03-07 | 李海军 | Method for detection and stopping leak for concrete buildings leakage source |
| CN201740767U (en) * | 2010-02-10 | 2011-02-09 | 冯严波 | Vehicle-mounted movable type dry-coupling semiautomatic ultrasonic flaw detector |
| CN102279224A (en) * | 2011-03-08 | 2011-12-14 | 中国航空工业集团公司北京航空制造工程研究所 | Adaptive ultrasonic tracking and scanning array transducer |
| CN105003087A (en) * | 2015-06-08 | 2015-10-28 | 江苏鼎达建筑新技术有限公司 | Ground hollow detection and repair method based on infrared imaging |
| CN105467007A (en) * | 2015-12-04 | 2016-04-06 | 四川兴天源材料检测技术有限公司 | Airplane leading edge detection device |
| CN205404487U (en) * | 2016-03-10 | 2016-07-27 | 沈阳大学 | Quality of building engineering detector |
| CN105672692A (en) * | 2016-04-01 | 2016-06-15 | 山东国兴智能科技有限公司 | Full-automatic roof leakage finding and repairing robot and leakage finding and repairing method |
| CN206233098U (en) * | 2016-11-16 | 2017-06-09 | 安徽师范大学 | A kind of viaduct bridge guardrail detects car |
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Application publication date: 20180320 |