CN117309611A - Traffic engineering quality detection equipment - Google Patents
Traffic engineering quality detection equipment Download PDFInfo
- Publication number
- CN117309611A CN117309611A CN202311339965.9A CN202311339965A CN117309611A CN 117309611 A CN117309611 A CN 117309611A CN 202311339965 A CN202311339965 A CN 202311339965A CN 117309611 A CN117309611 A CN 117309611A
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- CN
- China
- Prior art keywords
- fixedly connected
- telescopic
- quality detection
- engineering quality
- traffic engineering
- 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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- 238000001514 detection method Methods 0.000 title claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims abstract description 92
- 239000011148 porous material Substances 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 3
- 239000010720 hydraulic oil Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000005056 compaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/42—Road-making materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention relates to engineering quality detection, in particular to traffic engineering quality detection equipment, a rotating cylinder is rotationally connected to a communication sleeve, a power mechanism IV for driving the rotating cylinder to rotate is fixedly connected to the communication sleeve, the power mechanism IV is preferably a servo motor, a side baffle I is fixedly connected to the rotating cylinder, a plurality of arc support plates I are fixedly connected to the side baffle I, a plurality of communication holes are formed in the side baffle I, and the communication holes are communicated with the inside of a connecting pipeline II; the telescopic mechanism III is fixedly connected in the rotating cylinder, a side baffle II is fixedly connected to the telescopic end of the telescopic mechanism III, a plurality of arc support plates II are fixedly connected to the side baffle II, and the arc support plates II and the arc support plates I can be mutually spliced to form a circular hub; the method can simulate tires with different weights and different widths to squeeze the engineering road, so as to detect the quality of the engineering road.
Description
Technical Field
The invention relates to engineering quality detection, in particular to traffic engineering quality detection equipment.
Background
The engineering quality detection is a process of detecting and evaluating each work in the construction process of engineering projects so as to ensure that the engineering quality meets relevant standards and requirements; the detection of engineering road construction is carried out by detecting compaction degree, compressive strength, foundation bearing capacity and the like, for example, a patent number CN114923460A, which discloses a shell, is named as a multifunctional assembly type construction engineering quality detection device; the measuring mechanisms are symmetrically arranged on two sides of the shell and are rotationally connected with the shell; the adjusting mechanism is arranged between the shell and the measuring mechanism; the supporting mechanism is connected with the adjusting mechanism, and the driving assembly can be used for not only realizing the rotation of the shell, but also realizing the rotation of the measuring mechanism, so that the device can detect the levelness of each surface of the building; however, this patent has the disadvantage of not being able to simulate the squeezing of an engineering road by tires of different weights and different widths.
Disclosure of Invention
The invention aims to provide traffic engineering quality detection equipment which can simulate tires with different weights and different widths to squeeze an engineering road so as to detect the quality of the engineering road.
The aim of the invention is achieved by the following technical scheme:
the traffic engineering quality detection equipment comprises a device bracket, wherein a supporting disc is fixedly connected to the device bracket;
four moving brackets are fixedly connected to the device bracket, a telescopic mechanism I is fixedly connected to each moving bracket, a moving wheel is rotatably connected to the telescopic end of each telescopic mechanism I, a power mechanism I for driving the moving wheel to rotate is fixedly connected to the telescopic end of each telescopic mechanism I, and the power mechanism I is preferably a servo motor;
the device bracket is fixedly connected with a hydraulic cylinder, the hydraulic cylinder is fixedly connected with a connecting pipeline I, the device bracket is fixedly connected with a telescopic mechanism II, the telescopic end of the telescopic mechanism II is fixedly connected with a pushing plate, and the pushing plate is slidably connected in the hydraulic cylinder;
the support disc is rotationally connected with a rotating ring, the rotating ring is fixedly connected with a telescopic mechanism III, and a telescopic end of the telescopic mechanism III is rotationally connected with a swinging arm;
the support disc is fixedly connected with a power mechanism II for driving the rotating ring to rotate, the power mechanism II is preferably a servo motor, the telescopic end of the telescopic mechanism III is fixedly connected with a power mechanism III for driving the swing arm to rotate, and the power mechanism III is preferably a servo motor;
the swing arm is fixedly connected with a communication sleeve, the communication sleeve is fixedly connected with a connecting pipeline II, and the connecting pipeline II is communicated with the connecting pipeline I through a hose;
the rotary cylinder is rotationally connected to the communication sleeve, the power mechanism IV for driving the rotary cylinder to rotate is fixedly connected to the communication sleeve, the power mechanism IV is preferably a servo motor, the rotary cylinder is fixedly connected with the side baffle I, the side baffle I is fixedly connected with a plurality of arc support plates I, a plurality of communication holes are formed in the side baffle I, and the communication holes are communicated with the inside of the connecting pipeline II;
the telescopic mechanism III is fixedly connected in the rotating cylinder, a side baffle II is fixedly connected to the telescopic end of the telescopic mechanism III, a plurality of arc support plates II are fixedly connected to the side baffle II, and the arc support plates II and the arc support plates I can be mutually spliced to form a circular hub;
and an elastic sleeve is fixedly connected between the side baffle I and the side baffle II, a pressure space is formed among the elastic sleeve, the side baffle I and the side baffle II, and the pressure space is arranged in vacuum.
Drawings
The invention will be described in further detail with reference to the accompanying drawings and detailed description.
FIG. 1 is a schematic diagram of a traffic engineering quality detection apparatus of the present invention;
FIG. 2 is a schematic view of the structure of the support plate of the present invention;
FIG. 3 is a schematic view of the structure of the moving support of the present invention;
FIG. 4 is a schematic view of the hydraulic cylinder of the present invention;
FIG. 5 is a schematic cross-sectional view of a hydraulic cylinder of the present invention;
FIG. 6 is a schematic view of a rotating ring structure of the present invention;
FIG. 7 is a schematic view of the structure of the elastic sleeve of the present invention;
FIG. 8 is a schematic cross-sectional view of an elastomeric sleeve of the present invention;
FIG. 9 is a schematic view of the communication sleeve of the present invention;
FIG. 10 is a schematic view of the arc support plate I of the present invention;
FIG. 11 is a schematic view of the structure of the arc support plate II of the present invention;
fig. 12 is a schematic view showing the combined structure of the arc supporting plate I and the arc supporting plate II.
In the figure:
a device holder 11; a support plate 12;
a moving bracket 21; a telescopic mechanism I22; a moving wheel 23;
a hydraulic cylinder 31; a connecting pipe I32; a telescopic mechanism II 33; a push plate 34;
a rotating ring 41; telescoping mechanism III 42; swing arm 43;
a communication sleeve 51; a connecting pipe II 52;
a rotating cylinder 61; side guards I62; arc support plate I63; a communication hole 64;
telescoping mechanism III 71; side guards II 72; arc support plate II 73;
an elastic sleeve 80.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
As shown in fig. 1 to 12, in order to solve the technical problem of how to simulate tires of different weights and different widths to squeeze an engineering road, the structure and function of a traffic engineering quality inspection apparatus will be described in detail;
the traffic engineering quality detection equipment comprises a device bracket 11, wherein a supporting disc 12 is fixedly connected to the device bracket 11;
four moving brackets 21 are fixedly connected to the device bracket 11, a telescopic mechanism I22 is fixedly connected to each moving bracket 21, a moving wheel 23 is rotatably connected to the telescopic end of each telescopic mechanism I22, a power mechanism I for driving the moving wheel 23 to rotate is fixedly connected to the telescopic end of each telescopic mechanism I22, and the power mechanism I is preferably a servo motor;
when the device is used, as shown in fig. 1, the traffic engineering quality detection device is placed on a road to be detected, a power mechanism I is started, an output shaft of the power mechanism I starts to rotate, the output shaft of the power mechanism I drives a moving wheel 23 to rotate, and the moving wheel 23 drives a system to move when rotating;
further, the telescopic mechanism I22 can be started, the telescopic mechanism I22 can be a hydraulic cylinder or an electric push rod, the telescopic end of the telescopic mechanism I22 drives the moving support 21 to move, the moving support 21 drives the moving wheel 23 to move, the height of the device support 11 is adjusted, the overall height of the system is adjusted, and different passing requirements are met;
the device bracket 11 is fixedly connected with a hydraulic cylinder 31, the hydraulic cylinder 31 is fixedly connected with a connecting pipeline I32, the device bracket 11 is fixedly connected with a telescopic mechanism II 33, the telescopic end of the telescopic mechanism II 33 is fixedly connected with a pushing plate 34, and the pushing plate 34 is slidably connected in the hydraulic cylinder 31;
the support disc 12 is rotatably connected with a rotating ring 41, the rotating ring 41 is fixedly connected with a telescopic mechanism III 42, and a swinging arm 43 is rotatably connected to a telescopic end of the telescopic mechanism III 42;
the support disc 12 is fixedly connected with a power mechanism II which drives the rotating ring 41 to rotate, the power mechanism II is preferably a servo motor, the telescopic end of the telescopic mechanism III 42 is fixedly connected with a power mechanism III which drives the swing arm 43 to rotate, and the power mechanism III is preferably a servo motor;
the swing arm 43 is fixedly connected with a communication sleeve 51, the communication sleeve 51 is fixedly connected with a connecting pipeline II 52, and the connecting pipeline II 52 is communicated with the connecting pipeline I32 through a hose;
the rotary cylinder 61 is rotationally connected to the communication sleeve 51, the power mechanism IV for driving the rotary cylinder 61 to rotate is fixedly connected to the communication sleeve 51, the power mechanism IV is preferably a servo motor, the rotary cylinder 61 is fixedly connected with the side baffle I62, the side baffle I62 is fixedly connected with a plurality of arc support plates I63, the side baffle I62 is provided with a plurality of communication holes 64, and the communication holes 64 are communicated with the inside of the connecting pipeline II 52;
the telescopic mechanism III 71 is fixedly connected in the rotating cylinder 61, the side baffle II 72 is fixedly connected to the telescopic end of the telescopic mechanism III 71, the plurality of circular arc supporting plates II 73 are fixedly connected to the side baffle II 72, and the plurality of circular arc supporting plates II 73 and the plurality of circular arc supporting plates I63 can be mutually spliced to form a circular hub;
an elastic sleeve 80 is fixedly connected between the side baffle I62 and the side baffle II 72, a pressure space is formed among the elastic sleeve 80, the side baffle I62 and the side baffle II 72, and the interior of the pressure space is arranged in a vacuum manner;
when the device is used, the power mechanism II is started, the output shaft of the power mechanism II starts to rotate, the output shaft of the power mechanism II drives the rotating ring 41 to rotate, the rotating ring 41 drives the telescopic mechanism III 42 to rotate, the telescopic mechanism III 42 drives the swinging arm 43 to move, the swinging arm 43 drives the communication sleeve 51 to move, the communication sleeve 51 drives the rotating cylinder 61 to move, the rotating cylinder 61 drives the elastic sleeve 80 to move, and then the position of the elastic sleeve 80 is adjusted;
starting a telescopic mechanism III 42, wherein the telescopic mechanism III 42 can be a hydraulic cylinder or an electric push rod, the telescopic end of the telescopic mechanism III 42 drives a swinging arm 43 to move, the swinging arm 43 drives a communication sleeve 51 to move, the communication sleeve 51 drives a rotating cylinder 61 to move, the rotating cylinder 61 drives an elastic sleeve 80 to move, and the position of the elastic sleeve 80 is adjusted;
starting a power mechanism III, wherein an output shaft of the power mechanism III starts to rotate, the output shaft of the power mechanism III drives a swing arm 43 to move, the swing arm 43 drives a communication sleeve 51 to move, the communication sleeve 51 drives a rotating cylinder 61 to move, the rotating cylinder 61 drives an elastic sleeve 80 to move, and then the position of the elastic sleeve 80 is adjusted;
the position of the elastic sleeve 80 is adjusted by starting the power mechanism II, the telescopic mechanism III 42 and the power mechanism III, so that the elastic sleeve 80 is in contact with the engineering ground, and the elastic sleeve 80 is driven to move on the engineering ground by rotating the moving wheel 23, so that the extrusion of the tire to the engineering road is simulated;
further, the power mechanism iv can be started, the output shaft of the power mechanism iv starts to rotate, the output shaft of the power mechanism iv drives the rotating cylinder 61 to rotate, the rotating cylinder 61 drives the side baffle plate i 62 to rotate, the side baffle plate i 62 drives the elastic sleeve 80 to rotate, namely, when the moving wheel 23 does not rotate, the power mechanism iv can also be independently started, so that the elastic sleeve 80 moves on the engineering ground, or the rotating direction of the elastic sleeve 80 is opposite to the rotating direction of the moving wheel 23, or the rotating direction of the elastic sleeve 80 and the rotating speed of the moving wheel 23 are different, and further different detection requirements are met;
further, when the pressure of the elastic sleeve 80 to the ground needs to be adjusted, the telescopic mechanism ii 33 is started, the telescopic end of the telescopic mechanism ii 33 can be a hydraulic cylinder or an electric push rod, the push plate 34 is driven to move by the telescopic end of the telescopic mechanism ii 33, hydraulic oil or other liquid with a certain total amount is added into the hydraulic cylinder 31 in advance, the push plate 34 slides in the hydraulic cylinder 31, the hydraulic oil in the hydraulic cylinder 31 is injected into the connecting pipeline ii 52 through the connecting pipeline i 32, the hydraulic oil is injected into the connecting sleeve 51 through the connecting pipeline ii 52, and the hydraulic oil is injected into a pressure space formed among the elastic sleeve 80, the side baffle i 62 and the side baffle ii 72 through the connecting sleeve 51, so that the pressure of the elastic sleeve 80 to the ground is increased;
further, the power mechanism II, the telescopic mechanism III 42 and the power mechanism III can be started to adjust the pressure of the elastic sleeve 80 to the ground, and the pressure of the elastic sleeve 80 to the ground can be adjusted by the mutual matching of the two modes;
further, when the width of the elastic sleeve 80 needs to be adjusted, the telescopic mechanism III 71 is started, the telescopic end of the telescopic mechanism III 71 can be a hydraulic cylinder or an electric push rod, the side baffle II 72 is driven to move by the telescopic end of the telescopic mechanism III 71, the side baffle II 72 drives the plurality of arc support plates II 73 to move, the plurality of arc support plates II 73 and the plurality of arc support plates I63 are staggered for a certain distance, the side baffle I62 and the side baffle II 72 stretch the elastic sleeve 80, the length and the side length of the elastic sleeve 80 are enabled, tires with different widths are simulated, and different detection requirements are met;
further, form the inside vacuum setting in pressure space between elastic sleeve 80, side shield I62 and the side shield II 72, after a plurality of circular arc backup pad II 73 and a plurality of circular arc backup pad I63 completely separate, elastic sleeve 80 has lost a complete support for elastic sleeve 80's inside only has the support of circular arc backup pad II 73 or circular arc backup pad I63, elastic sleeve 80 produces indent deformation, make elastic sleeve 80 go up to form the arch, start power unit II, telescopic machanism III 42 and power unit III, make elastic sleeve 80 constantly strike the engineering road surface, and then detect the intensity of engineering road surface.
Claims (10)
1. Traffic engineering quality detection equipment, including intercommunication sleeve (51), its characterized in that: the utility model discloses a rotary sleeve (51) rotation is connected with rotary drum (61), fixedly connected with side shield I (62) on rotary drum (61), fixedly connected with a plurality of circular arc backup pad I (63) on side shield I (62), be provided with a plurality of intercommunicating pore (64) on side shield I (62), the inside intercommunication of intercommunicating pore (64) and connecting tube II (52), fixedly connected with telescopic machanism III (71) in rotary drum (61), fixedly connected with side shield II (72) on the flexible end of telescopic machanism III (71), fixedly connected with a plurality of circular arc backup pad II (73) on side shield II (72), fixedly connected with elastic sleeve (80) between side shield I (62) and side shield II (72).
2. The traffic engineering quality detection apparatus according to claim 1, wherein: a pressure space is formed among the elastic sleeve (80), the side baffle I (62) and the side baffle II (72), and the interior of the pressure space is arranged in vacuum.
3. The traffic engineering quality detection apparatus according to claim 1, wherein: the plurality of circular arc supporting plates II (73) and the plurality of circular arc supporting plates I (63) can be mutually spliced to form a circular hub.
4. The traffic engineering quality detection apparatus according to claim 1, wherein: and a power mechanism IV for driving the rotating cylinder (61) to rotate is fixedly connected to the communication sleeve (51).
5. The traffic engineering quality detection apparatus according to claim 1, wherein: the connecting sleeve (51) is fixedly connected with a connecting pipeline II (52), the connecting sleeve (51) is rotationally connected to the swinging arm (43), and the swinging arm (43) is rotationally connected to the telescopic end of the telescopic mechanism III (42).
6. The traffic engineering quality detection apparatus according to claim 5, wherein: the telescopic mechanism III (42) is fixedly connected to the rotating ring (41), and the rotating ring (41) is rotatably connected to the device bracket (11).
7. The traffic engineering quality detection apparatus according to claim 6, wherein: four moving brackets (21) are fixedly connected to the device bracket (11), telescopic mechanisms I (22) are fixedly connected to each moving bracket (21), and moving wheels (23) are rotatably connected to telescopic ends of each telescopic mechanism I (22).
8. The traffic engineering quality detection apparatus according to claim 7, wherein: the telescopic end of the telescopic mechanism I (22) is fixedly connected with a power mechanism I which drives the moving wheel (23) to rotate.
9. The traffic engineering quality detection apparatus according to claim 7, wherein: the device is characterized in that a hydraulic cylinder (31) is fixedly connected to the device support (11), a connecting pipeline I (32) is fixedly connected to the hydraulic cylinder (31), a telescopic mechanism II (33) is fixedly connected to the device support (11), a pushing plate (34) is fixedly connected to the telescopic end of the telescopic mechanism II (33), and the pushing plate (34) is slidably connected to the hydraulic cylinder (31).
10. The traffic engineering quality detection apparatus according to claim 9, wherein: the connecting pipeline II (52) is communicated with the connecting pipeline I (32) through a hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311339965.9A CN117309611B (en) | 2023-10-17 | 2023-10-17 | Traffic engineering quality detection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311339965.9A CN117309611B (en) | 2023-10-17 | 2023-10-17 | Traffic engineering quality detection equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117309611A true CN117309611A (en) | 2023-12-29 |
| CN117309611B CN117309611B (en) | 2024-04-16 |
Family
ID=89273561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311339965.9A Active CN117309611B (en) | 2023-10-17 | 2023-10-17 | Traffic engineering quality detection equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117309611B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5736939A (en) * | 1996-12-11 | 1998-04-07 | Caterpillar Inc. | Apparatus and method for determing a condition of a road |
| CN212378744U (en) * | 2020-06-02 | 2021-01-19 | 陈建友 | Portable detector of traffic engineering |
| CN212539969U (en) * | 2020-06-01 | 2021-02-12 | 周长农 | Highway engineering quality detection device |
| CN215366666U (en) * | 2021-07-02 | 2021-12-31 | 芜湖仕波交通设施有限公司 | Traffic engineering highway construction extrusion device |
| CN114002006A (en) * | 2021-11-11 | 2022-02-01 | 杨阳 | Safety risk management device based on traffic engineering quality |
| CN215894070U (en) * | 2021-09-23 | 2022-02-22 | 王金凤 | Sampling device for traffic engineering quality detection |
-
2023
- 2023-10-17 CN CN202311339965.9A patent/CN117309611B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5736939A (en) * | 1996-12-11 | 1998-04-07 | Caterpillar Inc. | Apparatus and method for determing a condition of a road |
| CN212539969U (en) * | 2020-06-01 | 2021-02-12 | 周长农 | Highway engineering quality detection device |
| CN212378744U (en) * | 2020-06-02 | 2021-01-19 | 陈建友 | Portable detector of traffic engineering |
| CN215366666U (en) * | 2021-07-02 | 2021-12-31 | 芜湖仕波交通设施有限公司 | Traffic engineering highway construction extrusion device |
| CN215894070U (en) * | 2021-09-23 | 2022-02-22 | 王金凤 | Sampling device for traffic engineering quality detection |
| CN114002006A (en) * | 2021-11-11 | 2022-02-01 | 杨阳 | Safety risk management device based on traffic engineering quality |
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| Publication number | Publication date |
|---|---|
| CN117309611B (en) | 2024-04-16 |
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