CN111254788B - Level detection device for roadbed and pavement - Google Patents
Level detection device for roadbed and pavement Download PDFInfo
- Publication number
- CN111254788B CN111254788B CN202010199069.7A CN202010199069A CN111254788B CN 111254788 B CN111254788 B CN 111254788B CN 202010199069 A CN202010199069 A CN 202010199069A CN 111254788 B CN111254788 B CN 111254788B
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- plate
- rod
- push rod
- grooves
- telescopic rod
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- 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
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- 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
- E01C23/16—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings
- E01C23/20—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings for forming markings in situ
- E01C23/24—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings for forming markings in situ by pouring
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Signs Or Road Markings (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The invention discloses a roadbed and pavement level detection device, which comprises a vehicle body, wherein the lower bottom surface of the vehicle body is connected with a concave-convex detection plate and marking equipment, and the concave-convex detection plate is contacted with the marking equipment; the lower surface of the concave-convex detection plate is provided with a row of grooves which are arranged closely, moving rods are arranged in the grooves, the top ends of the moving rods are positioned in the grooves and fixedly connected with the two ends of a strong spring respectively with the inner tops of the grooves, and the bottom ends of the moving rods are rotatably connected with rollers; the movable rod side that is located the recess outside is through pushing away stick and marking device contact, and electric telescopic handle and bottom of the car body are passed through at the both ends of unevenness's pick-up plate upper surface and are connected, through the in-process of the automobile body that traveles, gyro wheel on the unevenness's pick-up plate can drive the movable rod up-and-down motion meetting unevenness's place, and then can drive the stripper plate through the pushing away stick and extrude the soft package of marker fluid to the marker fluid can flow out and carry out the mark on the road, thereby be convenient for the repair of subsequent road surface roughness.
Description
Technical Field
The invention relates to the field of roads, in particular to a roadbed and pavement level detection device.
Background
Whether the roadbed and the pavement are flat or not relates to the service life of the road, the pavement is uneven, the unevenness can be continuously increased in the driving process of a vehicle, for example, a pit is formed in the uneven road, the pit can be larger and larger in the driving process of the vehicle, water can be accumulated in the rainy day, the soil or cement on the surface of the pit is soft, and the service life of the road can be greatly reduced;
based on this, the road construction needs to carry out level detection on the roadbed and the road surface, in the evaluation indexes of a plurality of road surface inspection projects, the flatness accounts for 15% -20% of the total score of the evaluation projects, and the important position is seen, most of the conventional roadbed and road surface detection devices have simple structures, generally detect artificial gradienters or horizontal lines, have low detection efficiency and low accuracy, and cannot adapt to the conventional highway technology developed at high speed.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problem of low detection efficiency of the level of the roadbed and the road surface in the prior art, the invention aims to provide a detection device for the level of the roadbed and the road surface, which can realize efficient and rapid detection.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A roadbed and pavement level detection device comprises a vehicle body, wherein a concave-convex detection plate and marking equipment are connected to the lower bottom surface of the vehicle body, and the concave-convex detection plate is in contact with the marking equipment;
the lower surface of the concave-convex detection plate is provided with a row of grooves which are arranged closely, moving rods are arranged in the grooves, the top ends of the moving rods are positioned in the grooves and fixedly connected with the two ends of a strong spring respectively with the inner tops of the grooves, and the bottom ends of the moving rods are rotatably connected with rollers;
the side surface of the moving rod positioned outside the groove is contacted with a marking device through a push rod, two ends of the upper surface of the concave-convex detection plate are connected with the bottom of the vehicle body through electric telescopic rods, and the electric telescopic rods are electrically connected with a power supply through a controller;
the marking device comprises a body, wherein a plurality of cavities are arranged in the body, one side of the body, which is close to the movable rod, is provided with a through hole, the through hole is communicated with the cavities, and the cavities are in one-to-one correspondence with the movable rod;
a soft marker liquid bag is arranged in the cavity, an extrusion plate is arranged between the soft marker liquid bag and the through hole, a push rod is arranged in the through hole, one end of the push rod is fixedly connected with the extrusion plate, and the other end of the push rod is fixedly connected with the bottom surface of a triangular column with an isosceles triangle-shaped cross section;
one end of a push rod is fixedly connected with the side surface of the moving rod which is positioned on the same horizontal line with the push rod, a triangular groove matched with a triangular column is formed in the other end of the push rod, the triangular column is positioned in the triangular groove, and a spring is arranged between the triangular column and the body;
a liquid inlet pipe is communicated with the upper part of the soft marker liquid package, a liquid outlet pipe is connected with the lower part of the soft marker liquid package, a one-way valve is arranged on the liquid inlet pipe, a pressure valve is arranged on the liquid outlet pipe, the liquid outlet pipe penetrates through the body and extends downwards, and the liquid inlet pipe penetrates through the body and extends upwards and is communicated with a marker liquid tank in the vehicle body;
the top end of the body is connected with the lower surface of the vehicle body through an electric telescopic rod, and the electric telescopic rod is electrically connected with a power supply through a controller;
two side surfaces of the extrusion plate are respectively in close contact with the soft package of the marking liquid and the inner wall of the cavity.
Preferably, the extrusion plate comprises a first plate body and a second plate body, a plate groove is formed in the side face, far away from the push rod, of the first plate body, a bidirectional telescopic rod is fixedly connected to the middle of the plate groove, fixed blocks are fixedly connected to the plate groove walls at the two ends of the bidirectional telescopic rod, a sliding groove is formed in the face, close to the plate groove, of the second plate body, and the side face, far away from the second plate body, of the first plate body is fixedly connected with the push rod;
an X-shaped telescopic frame is connected between the first plate body and the second plate body, one end of the telescopic frame is rotationally connected with the fixed block and the end part of the bidirectional telescopic rod, the other end of the telescopic frame is rotationally connected with the sliding groove and the sliding block, the sliding block is positioned in the sliding groove and is slidably connected, and the end part of the telescopic frame rotationally connected with the sliding groove and the fixed block are positioned on the same horizontal line;
the surface of the triangular column is fixedly connected with an oval air bag, the surface of the air bag close to the triangular groove is connected with a pressure sensor, and the pressure sensor is electrically connected with a power supply through a controller.
Preferably, the bidirectional telescopic rod is electrically connected with a power supply through a controller.
Preferably, the air bag is communicated with the bidirectional telescopic rod.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that: when the road marking device is used, in the process of running the vehicle body, the roller on the concave-convex detection plate can drive the movable rod to move up and down when meeting the concave-convex position, and then the push rod is driven by the push rod to drive the extrusion plate to extrude the soft package of the marking liquid, so that the marking liquid can flow out of the road to be marked, and the subsequent road surface flatness repairing is facilitated.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view taken at A of FIG. 1 in accordance with the present invention;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 2 in accordance with the present invention;
FIG. 4 is an enlarged view of FIG. 2 at C;
FIG. 5 is a schematic view of the construction of the marking apparatus of the present invention;
FIG. 6 is a schematic view of the construction of the squeeze board of the present invention;
FIG. 7 is an enlarged view of the invention at D in FIG. 6.
The reference numbers in the figures illustrate:
1. a vehicle body; 2. a concave-convex detection plate; 3. a marking device;
201. a groove; 202. a travel bar; 203. a strong spring; 204. a roller; 205. an electric telescopic rod; 206. an electric telescopic rod; 207. pushing the rod; 208. a triangular groove;
301. a body; 302. a travel bar; 303. a through hole; 304. marking liquid soft bags; 305. a pressing plate; 306. a push rod; 307. a triangular column; 308. a spring; 309. a liquid inlet pipe; 310. a liquid outlet pipe; 311. a one-way valve; 312. a pressure valve;
401. a first plate body; 402. a second plate body; 403. a plate groove; 404. a bidirectional telescopic rod; 405. a fixed block; 406. a chute; 407. a telescopic frame; 408. a slider;
501. an air bag; 502. a pressure sensor.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; rather than all embodiments. Based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.
Example 1:
referring to fig. 1-7, a roadbed and pavement level detection device comprises a vehicle body 1, wherein a concave-convex detection plate 2 and a marking device 3 are connected to the lower bottom surface of the vehicle body 1, and the concave-convex detection plate 2 is in contact with the marking device 3; the vehicle body is convenient for people to drive the vehicle, and is more convenient and faster compared with the traditional hand-push type vehicle;
a row of grooves 201 which are arranged closely are formed in the lower surface of the concave-convex detection plate 2, a moving rod 202 is arranged in each groove 201, the top end of each moving rod 202 is located in each groove 201 and fixedly connected with the top of each groove 201 at two ends of a strong spring 203, and the bottom end of each moving rod 202 is rotatably connected with a roller 204;
the side surface of the moving rod 202 positioned outside the groove 201 is contacted with the marking device 3 through the push rod 207, two ends of the upper surface of the concave-convex detection plate 2 are connected with the bottom of the vehicle body 1 through the electric telescopic rod 206, and the electric telescopic rod 206 is electrically connected with a power supply through a controller.
As shown in fig. 1-4, before use, the controller adjusts the length of the electric telescopic rod 206 to make the strong spring 203 in the electric telescopic rod in a compressed state, and then adjusts the electric telescopic rod 205 (how to adjust, how to adjust to, which will be described later);
as shown in fig. 4, when the road surface has projections or recesses during driving, the push rod 207 can make the marking device 3 flow out the marking liquid for marking, and the greater the projection degree or the recess degree, the more the marking liquid flows out, so as to mark the place and the uneven degree by the marking liquid.
Example 2:
as shown in fig. 4 and 5, the marking device 3 includes a body 301, a plurality of cavities 302 are disposed inside the body 301, a through hole 303 is disposed on one side of the body 301 close to the moving rod 202, the through hole 303 is communicated with the cavities 302, and the cavities 302 correspond to the moving rods 202 one to one;
a mark liquid soft bag 304 is arranged in the cavity 302, an extrusion plate 305 is arranged between the mark liquid soft bag 304 and the through hole 303, a push rod 306 is arranged in the through hole 303, one end of the push rod 306 is fixedly connected with the extrusion plate 305, and the other end of the push rod 306 is fixedly connected with the bottom surface of a triangular column 307 with an isosceles triangle section;
one end of a push rod 207 is fixedly connected with the side surface of the moving rod 202 which is positioned on the same horizontal line with the push rod 306, a triangular groove 208 matched with a triangular column 307 is formed in the other end of the push rod 207, the triangular column 307 is positioned in the triangular groove 208, and a spring 308 is arranged between the triangular column 307 and the body 301;
a liquid inlet pipe 309 is communicated above the soft marker liquid bag 304, a liquid outlet pipe 310 is connected below the soft marker liquid bag, a one-way valve 311 is arranged on the liquid inlet pipe 309, a pressure valve 312 is arranged on the liquid outlet pipe 310, the liquid outlet pipe 310 penetrates through the body 301 and extends downwards, and the liquid inlet pipe 309 penetrates through the body 301 and extends upwards and is communicated with a marker liquid tank in the vehicle body 1;
the top end of the body 301 is connected with the lower surface of the vehicle body through the electric telescopic rod 205, and the electric telescopic rod 205 is electrically connected with a power supply through a controller;
two sides of the pressing plate 305 are respectively in close contact with the soft package 304 of the marking liquid and the inner wall of the cavity 302.
The triangular groove 208 on the push rod 207 is matched with the triangular prism 307, as shown in fig. 4, when the moving rod drives the push rod 207 to move up or down (taking upward as an example), the triangular prism 307 is extruded to move right, in order to make the push rod 207 move more smoothly, the inner wall of the through hole 303 is provided with a plurality of ball grooves, and rolling balls are arranged in the ball grooves, so that the rolling friction is small;
the pushing rod 207 moves rightwards to drive the extrusion plate 305 to extrude the soft label liquid package 304 rightwards, as shown in fig. 5, label liquid is filled in the soft label liquid package 304, the label liquid is colored liquid or colloid, under the extrusion effect, the pressure in the soft label liquid package 304 is continuously increased due to the fact that the liquid inlet pipe 309 is provided with the one-way valve 311, the label liquid flows out from the liquid outlet pipe 310 until the pressure exceeds the set value of the pressure valve 312, and the pressure valve is arranged to prevent the label liquid from flowing out under the condition that the label liquid is not extruded on one hand, and on the other hand, the label liquid package 304 is not caused to be extruded by the concave part of a small bulge on the other hand; then, the push rod 306 drives the extrusion plate 305 to restore to the original state under the action of the spring, and the marking liquid in the marking liquid tank in the vehicle body 1 is supplemented into the soft package 304 of the marking liquid under the action of gravity.
Example 3:
as shown in fig. 4 and 6-7, the extrusion plate 305 includes a first plate 401 and a second plate 402, a plate groove 403 is formed on a side surface of the first plate 401 away from the push rod 306, a bidirectional telescopic rod 404 is fixedly connected to a middle portion of the plate groove 403, fixing blocks 405 are fixedly connected to walls of the plate grooves 403 at two ends of the bidirectional telescopic rod 404, a sliding groove 406 is formed on a surface of the second plate 402 close to the plate groove 403, and a side surface of the first plate 401 away from the second plate 402 is fixedly connected to the push rod 306;
an X-shaped telescopic frame 407 is connected between the first plate body 401 and the second plate body 402, one end of the telescopic frame 407 is rotatably connected with the fixed block 405 and the end part of the bidirectional telescopic rod 404, the other end of the telescopic frame 407 is rotatably connected with the sliding groove 406 and the sliding block 408, the sliding block 408 is positioned in the sliding groove 406 and is slidably connected, and the end part of the telescopic frame 407, which is rotatably connected with the sliding groove 406, and the fixed block 405 are positioned on the same horizontal line;
an elliptical air bag 501 is fixedly connected to the surface of the triangular column 307, a pressure sensor 502 is connected to the surface of the air bag 501 close to the triangular groove 208, and the pressure sensor 502 is electrically connected with a power supply through a controller.
After the electric telescopic rod 206 is adjusted, the electric telescopic rod 205 also needs to be adjusted, so that the middle parts of the triangular column 307 and the triangular groove 208 are positioned on the same horizontal line, and the displacement generated by the extrusion plate 305 is increased, so that the precision and accuracy of flatness detection are improved;
firstly, as shown in fig. 4, two elliptical air bags 501 are fixedly connected to the surface of a triangular column 307, the air in the air bags is inflated, pressure sensors 502 are connected to the surfaces of the air bags 501 close to a triangular groove 208, the pressure sensors 502 are simultaneously contacted with the inner wall of the triangular groove, because the distance between a moving rod and a body 301 is a fixed value, after the electric telescopic rod 206 and the electric telescopic rod 205 are preliminarily adjusted, the values transmitted to a controller by the pressure sensors 502 on the two air bags are unequal, fine adjustment is performed at the moment until the values transmitted to the controller by the two pressure sensors 502 are equal, and when unevenness occurs, the bidirectional telescopic rod 404 drives the X-shaped telescopic frame 407 to extend, so that the displacement generated by the pressing plate 305 is increased.
Example 4:
the bi-directional telescoping rod 404 is electrically connected to a power source via a controller. When the values transmitted by the two pressure sensors 502 to the controller are again unequal and the difference exceeds the set value, the controller controls the bi-directional telescoping rod 404 to extend and squeeze the soft bag of marking fluid 304.
Example 5:
the air bag 501 is communicated with the bidirectional expansion rod 404.
Different from embodiment 4, the non-electronic of two-way telescopic rod of this embodiment, concrete operation is, the extrusion of triangular groove is received when triangular prism 307, gasbag 501 on the triangular prism has also received the extrusion promptly, gas in the gasbag transmits in two-way telescopic rod this moment, and then drive the extension of two-way telescopic rod, specifically can be provided with flexible gasbag in the two-way telescopic rod, can drive the extension of two-way telescopic rod when gas flows into flexible gasbag in, when the gasbag reconversion (can be provided with the spring that lets the gasbag reconversion in the gasbag), flexible gasbag becomes to be held back this moment, two-way telescopic rod shortens.
In conclusion, the special invention only needs an operator to drive the vehicle body, and when the roller wheel meets the uneven position, the marking device can automatically mark, so that the subsequent repairing treatment is convenient.
The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.
Claims (4)
1. The utility model provides a road bed road surface level detection device which characterized in that: the vehicle comprises a vehicle body (1), wherein the lower bottom surface of the vehicle body (1) is connected with a concave-convex detection plate (2) and a marking device (3), and the concave-convex detection plate (2) is contacted with the marking device (3);
the lower surface of the concave-convex detection plate (2) is provided with a row of grooves (201) which are closely arranged, moving rods (202) are arranged in the grooves (201), the top ends of the moving rods (202) are located in the grooves (201) and are fixedly connected with the inner top of the grooves (201) at two ends of a strong spring (203), and the bottom ends of the moving rods (202) are rotatably connected with rollers (204);
the side surface of a moving rod (202) positioned outside the groove (201) is contacted with the marking device (3) through a push rod (207), two ends of the upper surface of the concave-convex detection plate (2) are connected with the bottom of the vehicle body (1) through an electric telescopic rod (206), and the electric telescopic rod (206) is electrically connected with a power supply through a controller;
the marking device (3) comprises a body (301), a plurality of cavities (302) are arranged in the body (301), through holes (303) are formed in one side, close to the movable rod (202), of the body (301), the through holes (303) are communicated with the cavities (302), and the cavities (302) correspond to the movable rods (202) one to one;
a mark liquid soft bag (304) is arranged in the cavity (302), an extrusion plate (305) is arranged between the mark liquid soft bag (304) and the through hole (303), a push rod (306) is arranged in the through hole (303), one end of the push rod (306) is fixedly connected with the extrusion plate (305), and the other end of the push rod (306) is fixedly connected with the bottom surface of a triangular column (307) with an isosceles triangle section;
one end of a push rod (207) is fixedly connected to the side face of the moving rod (202) which is positioned on the same horizontal line with the push rod (306), a triangular groove (208) matched with a triangular column (307) is formed in the other end of the push rod (207), the triangular column (307) is positioned in the triangular groove (208), and a spring (308) is arranged between the triangular column (307) and the body (301);
a liquid inlet pipe (309) is communicated with the upper part of the marking liquid soft package (304), a liquid outlet pipe (310) is connected with the lower part of the marking liquid soft package, a one-way valve (311) is arranged on the liquid inlet pipe (309), a pressure valve (312) is arranged on the liquid outlet pipe (310), the liquid outlet pipe (310) penetrates through the body (301) and extends downwards, and the liquid inlet pipe (309) penetrates through the body (301) and extends upwards and is communicated with a marking liquid tank in the vehicle body (1);
the top end of the body (301) is connected with the lower surface of the vehicle body through an electric telescopic rod (205), and the electric telescopic rod (205) is electrically connected with a power supply through a controller;
two side surfaces of the extrusion plate (305) are respectively in close contact with the soft bag (304) of the marking liquid and the inner wall of the cavity (302).
2. The roadbed and road surface level detection device of claim 1, wherein: the extrusion plate (305) comprises a first plate body (401) and a second plate body (402), a plate groove (403) is formed in the side face, far away from the push rod (306), of the first plate body (401), a bidirectional telescopic rod (404) is fixedly connected to the middle of the plate groove (403), fixed blocks (405) are fixedly connected to the walls of the plate grooves (403) at the two ends of the bidirectional telescopic rod (404), a sliding groove (406) is formed in the face, close to the plate groove (403), of the second plate body (402), and the side face, far away from the second plate body (402), of the first plate body (401) is fixedly connected with the push rod (306);
an X-shaped expansion bracket (407) is connected between the first plate body (401) and the second plate body (402), one end of the expansion bracket (407) is rotatably connected with the fixed block (405) and the end part of the bidirectional expansion rod (404), the other end of the expansion bracket is rotatably connected with the sliding chute (406) and the sliding block (408), the sliding block (408) is positioned in the sliding chute (406) and is in sliding connection, and the end part of the expansion bracket (407) and the sliding chute (406) which are rotatably connected and the fixed block (405) are positioned on the same horizontal line;
the surface of the triangular column (307) is fixedly connected with an oval air bag (501), the surface of the air bag (501) close to the triangular groove (208) is connected with a pressure sensor (502), and the pressure sensor (502) is electrically connected with a power supply through a controller.
3. The roadbed and road surface level detection device of claim 2, wherein: the bidirectional telescopic rod (404) is electrically connected with a power supply through a controller.
4. The roadbed and road surface level detection device of claim 2, wherein: the air bag (501) is communicated with the bidirectional telescopic rod (404).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010199069.7A CN111254788B (en) | 2020-03-20 | 2020-03-20 | Level detection device for roadbed and pavement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010199069.7A CN111254788B (en) | 2020-03-20 | 2020-03-20 | Level detection device for roadbed and pavement |
Publications (2)
| Publication Number | Publication Date |
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| CN111254788A CN111254788A (en) | 2020-06-09 |
| CN111254788B true CN111254788B (en) | 2021-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010199069.7A Expired - Fee Related CN111254788B (en) | 2020-03-20 | 2020-03-20 | Level detection device for roadbed and pavement |
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| CN111893848B (en) * | 2020-07-15 | 2021-09-28 | 山东首坤交通工程有限公司 | Highway road surface detects and real-time mark device |
| CN111895960B (en) * | 2020-08-06 | 2021-04-20 | 鞍钢冷轧钢板（莆田）有限公司 | Galvanized steel sheet flatness detection marking system and detection marking method |
| CN112267361B (en) * | 2020-10-15 | 2022-04-19 | 魏强 | Road surface level detection device for road construction |
| CN113432573A (en) * | 2021-06-11 | 2021-09-24 | 安徽华达交通工程试验检测有限公司 | Bridge deck flatness detection system |
| CN113483624B (en) * | 2021-08-07 | 2023-04-14 | 杭州伟业建设集团有限公司 | Device and method for monitoring internal motion state of pavement bridge tunnel |
| CN113624166B (en) * | 2021-08-18 | 2022-07-01 | 卢红岩 | Highway engineering road surface quality detection device |
| CN114166102A (en) * | 2021-12-08 | 2022-03-11 | 贾月坤 | Highway engineering pitch paves flat flattening detection device of back way section |
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| CN114960372B (en) * | 2022-05-09 | 2023-11-07 | 温州信达交通工程试验检测有限公司 | Flatness detection device for highway engineering and detection method thereof |
| CN115342714B (en) * | 2022-10-20 | 2023-02-03 | 武汉市金诚瑞达石材有限公司 | Lace stone flatness detection device |
| CN115897337A (en) * | 2023-02-24 | 2023-04-04 | 武汉凯诚兴瑞基础工程有限公司 | Highway engineering foundation reinforcing equipment and reinforcing method thereof |
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