CN113944129A - Hidden road surface median - Google Patents
Hidden road surface median Download PDFInfo
- Publication number
- CN113944129A CN113944129A CN202111081328.7A CN202111081328A CN113944129A CN 113944129 A CN113944129 A CN 113944129A CN 202111081328 A CN202111081328 A CN 202111081328A CN 113944129 A CN113944129 A CN 113944129A
- Authority
- CN
- China
- Prior art keywords
- curb
- concrete foundation
- kerbstone
- groove
- road surface
- 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
- 239000004575 stone Substances 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 40
- 239000010959 steel Substances 0.000 claims description 40
- 238000000926 separation method Methods 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000000428 dust Substances 0.000 description 5
- 239000004576 sand Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
- E01F15/12—Continuous barriers extending along roads or between traffic lanes and having means for providing occasional passage, e.g. for emergency vehicles
-
- 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
- E01C11/00—Details of pavings
- E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
- E01C11/221—Kerbs or like edging members, e.g. flush kerbs, shoulder retaining means ; Joint members, connecting or load-transfer means specially for kerbs
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention provides a hidden road surface division belt, which comprises curb stones and concrete foundations, wherein a plurality of groups of combination bodies of the curb stones and the concrete foundations are connected in series to form the hidden road surface division belt; the concrete foundation is buried underground, the upper end face of the concrete foundation is flush with the ground, at least two rotating pieces are rotatably clamped in the kerbstone, and clamping portions are arranged at the lower parts of the rotating pieces; the concrete foundation is internally provided with a mounting groove for mounting the curb, and is also provided with a platform groove a and a platform groove b for clamping the height position of the curb. This hidden road surface median can realize fast switch over road traffic operation route, and curb and concrete foundation all are with the road surface parallel and level at ordinary times, do not influence normal road traffic, when needing to launch this hidden road surface median, expose the concrete foundation with the curb, fast switch over road state.
Description
Technical Field
The invention relates to a hidden road surface separation belt, and belongs to the field of road construction.
Background
A curb is a monument provided between a road surface and another structure. Curb stones are generally required to be arranged between a separation zone and a road surface of an urban road and between a sidewalk and the road surface, and the curb stones are usually required to be arranged at the edge of a central separation zone of a road, the edge of the right side of a traffic lane or the edge of the outer side of a road shoulder.
Some sports events and meeting activities are held once a few years, roads need to be closed or changed when the activities are held, original road design cannot be damaged, the activities start and end, rapid response is needed, the roads need to be closed or changed in a short time when the activities start, road traffic is planned and operated according to the activities holding period, original road planning is rapidly recovered after the activities end, and the road traffic is ensured to be planned and operated daily after the activities end.
Therefore, there is a need to design a new hidden road surface partition strip, which can quickly switch the road traffic route.
Disclosure of Invention
The invention provides a hidden road surface separation belt for realizing rapid switching of road traffic operation routes.
The invention provides a hidden road surface division strip for realizing the aim, which comprises curb stones and concrete foundations, wherein a plurality of groups of combination bodies of the curb stones and the concrete foundations are connected in series to form the hidden road surface division strip; the concrete foundation is buried underground, the upper end face of the concrete foundation is flush with the ground, at least two rotating pieces are rotatably clamped in the kerbstone, and clamping portions are arranged at the lower parts of the rotating pieces; the concrete foundation is internally provided with a mounting groove for mounting the curb, and also provided with a platform groove a and a platform groove b for clamping the height position of the curb; when the rotating member rotates to the position where the clamping part is clamped in the platform groove a, the clamping part supports the platform groove a to support the curb, and the curb is exposed out of the upper end surface of the concrete foundation; when the clamping position part is clamped in the platform groove b, the upper end face of the kerbstone is flush with the upper end face of the concrete foundation.
Further, in order to be able to rotate the screens portion that rotates the portion of twisting of rotation upper end and drive curb below rotates, conveniently controls the position of curb on concrete foundation, sets up the through hole that runs through lower extreme on the curb in the curb, rotates the piece and still includes twisting portion and connection steel pipe, connects the steel pipe and penetrates this through hole, connects the steel pipe upper end and connects the portion of twisting, lower extreme connection screens portion, twisting portion and screens portion will connect the steel pipe card to establish in the curb.
Furthermore, in order to rotate the rotating part conveniently, the twisting part is a cross-shaped steel plate, and the clamping part is a straight-line-shaped steel plate.
Furthermore, in order to solve the position relationship between the clamping portion and the platform groove a and achieve the optimal matching position more accurately, the length direction of the linear steel plate of the clamping portion is parallel to the extension direction of one steel plate in the cross-shaped steel plates of the torsion portion, and marks can be made on the cross-shaped steel plates of the torsion portion.
Furthermore, in order to keep the consistency of the kerbstone, the sharp metal part does not protrude out of the kerbstone, a rotating groove is arranged at the upper end of the kerbstone, a torsion part is arranged in the rotating groove, the outline of the rotating groove is larger than the moving range of the torsion part, and the torsion part is not higher than the upper end plane of the kerbstone.
Furthermore, in order to enable dirt such as sand and dust on the road surface to enter the concrete foundation along with water flow and settle at the lowest part inside the concrete foundation and reduce the possibility that the rotating piece is blocked by the dirt such as the sand and dust, the mounting groove extends downwards and exceeds the depth of the platform groove b.
Further, in order to rotate screens portion screens when platform inslot a of piece, the atress that the curb lifted by the screens portion is even, and the more firm lifting of curb is in concrete foundation, and every curb is inside to be rotated and to be set up two and rotate the piece.
Further, for the convenient lifting of curb, rotation that can be smooth rotate the piece rotates, the curb upper end is equipped with the rings that conveniently lift by crane the curb.
Furthermore, in order to facilitate the installation of the concrete foundation and the curb in construction and facilitate the smooth discharge of accumulated water in the concrete foundation in rainy days, the length of the concrete foundation is the same as that of the curb.
Furthermore, in order to facilitate drainage, the length of the concrete foundation is 99cm, and a seam with the width of 1cm is reserved between every two adjacent concrete foundations.
The invention has the beneficial effects that:
1. the hidden road surface separation belt can realize the rapid switching of road traffic operation routes, firstly, a concrete foundation is buried in a preset position of a road, the upper surface of the concrete foundation is flush with the road surface, then, a curb is installed in the concrete foundation, the curb is completely immersed in the concrete foundation, when the road needs to be changed or closed, the curb is lifted, then, the rotating piece is rotated, the clamping part of the rotating piece extends into the platform groove a of the curb, the curb is put down, the curb is lifted by the clamping part, the concrete foundation is exposed, and the current road is closed or changed; when this road curb is taken as the road median, set up two rows of curb in the middle of the road, movable flowerpot is placed to two rows of curb looks clamp road part, but arrange fast and demolish.
2. Set up the through hole that runs through curb upper and lower extreme in the curb, rotate the piece and still include torsion portion and connection steel pipe, connect the steel pipe and penetrate this through hole, connect the steel pipe upper end and connect the portion of twisting, lower extreme joint block portion, torsion portion and screens portion will connect the steel pipe card and establish in the curb, can pass through the rotation the portion of twisting of rotation piece upper end drives the screens portion rotation of curb below, conveniently controls the position of curb on concrete foundation.
3. The torsion part is a cross-shaped steel plate, and the clamping part is a linear steel plate, so that the rotation part is convenient to rotate.
4. The length direction of the linear steel plate of the clamping part is parallel to the extension direction of one steel plate in the cross-shaped steel plates of the torsion part, marks can be made on the cross-shaped steel plates of the torsion part, the position relation between the clamping part and the platform groove a can be solved, and the optimal matching position can be achieved more accurately.
5. The curb upper end is equipped with the rotation groove, and the torsion portion is established in the rotation groove, and the outline in rotation groove is greater than the home range of torsion portion, and the torsion portion is not higher than the up end plane of curb, keeps the uniformity of curb, and sharp-pointed metal portion does not stick out the curb.
6. The possibility that the rotating piece is blocked by dirt such as sand and dust is reduced, the mounting groove extends downwards and exceeds the depth of the platform groove b, and the dirt such as sand and dust on the road surface enters the concrete foundation along with water flow and is deposited at the lowest part inside the concrete foundation.
7. Every curb inside rotates and sets up two rotation pieces, and when the screens of the screens portion that rotates was in platform groove a, the atress that the curb was lifted by the screens portion was even, and the more firm lifting of curb is in concrete foundation.
8. The curb upper end is equipped with the rings that conveniently lift by crane the curb, and the curb conveniently lifts by crane, rotation that can be smooth rotate the piece.
9. The length of the concrete foundation is the same as that of the kerb, so that the concrete foundation and the kerb are convenient to install in construction, and accumulated water in the concrete foundation is convenient to discharge smoothly in rainy days.
10. The length of the concrete foundation is 99cm, and a seam with the width of 1cm is reserved between two adjacent concrete foundations, so that drainage is facilitated.
Drawings
Fig. 1 is a longitudinal sectional view showing the installation of the kerb exposed to the concrete foundation of the present invention.
Fig. 2 is a longitudinal sectional view of the inventive curb installed without a concrete foundation.
Fig. 3 is a front view of the inventive curb after attachment to a rotor.
Fig. 4 is a top view of the curb of the present invention after being coupled to a rotor.
In the figure: 1. a curb; 1-1, a hanging ring; 2. concrete foundation; 2-1, mounting grooves; 2-2, a platform groove a; 2-3, a platform groove b; 3. a rotating member; 3-1, a clamping part; 3-2, a torsion part; 3-3, connecting the steel pipes.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described with reference to the accompanying drawings.
The hidden road surface division strip as shown in fig. 1-4 comprises a curb 1 and a concrete foundation 2, wherein a plurality of groups of combination bodies of the curb 1 and the concrete foundation 2 are connected in series to form the hidden road surface division strip; the concrete foundation 2 is buried underground, the upper end face of the concrete foundation 2 is flush with the ground, at least two rotating pieces 3 are rotatably clamped in the kerbstone 1, and clamping parts 3-1 are arranged at the lower parts of the rotating pieces 3; the concrete foundation 2 is internally provided with a mounting groove 2-1 for mounting the curb 1, and is also provided with a platform groove a2-2 and a platform groove b2-3 for clamping the height position of the curb 1; when the rotating member 3 rotates to the position clamping portion 3-1 to be clamped in the platform groove a2-2, the position clamping portion 3-1 supports the platform groove a2-2 to support the kerbstone 1, and the kerbstone 1 is exposed out of the upper end face of the concrete foundation 2; when the clamping part 3-1 is clamped in the platform groove b2-3, the upper end surface of the kerbstone 1 is flush with the upper end surface of the concrete foundation 2.
Based on the above embodiment, the through holes penetrating the upper end and the lower end of the kerbstone 1 are arranged in the kerbstone 1, the rotating piece 3 further comprises a twisting part 3-2 and a connecting steel pipe 3-3, the connecting steel pipe 3-3 penetrates into the through holes, the twisting part 3-2 is connected to the upper end of the connecting steel pipe 3-3, the clamping part 3-1 is connected to the lower end, the connecting steel pipe 3-3 is clamped in the kerbstone 1 by the twisting part 3-2 and the clamping part 3-1, and the clamping part below the kerbstone can be driven to rotate by rotating the twisting part at the upper end of the rotating piece, so that the position of the kerbstone on a concrete foundation can be controlled conveniently.
Based on the above embodiment, the torsion portion 3-2 is a cross-shaped steel plate, and the positioning portion 3-1 is a straight-line-shaped steel plate, so that the rotating member can be conveniently rotated.
Based on the above embodiment, the length direction of the linear steel plate of the torsion clamping portion 3-1 is parallel to the extension direction of one of the cross-shaped steel plates of the torsion portion 3-2, and marks can be made on the cross-shaped steel plate of the torsion portion, so that the position relationship between the clamping portion and the platform groove a can be released, and the optimal matching position can be achieved more accurately.
Based on the above embodiment, the upper end of the kerbstone 1 is provided with the rotating groove, the torsion part 3-2 is arranged in the rotating groove, the outer contour of the rotating groove is larger than the moving range of the torsion part 3-2, the torsion part 3-2 is not higher than the upper end plane of the kerbstone 1, the consistency of the kerbstone is kept, and the sharp metal part does not protrude out of the kerbstone.
Based on the above embodiment, the mounting groove 2-1 extends downwards and exceeds the depth of the platform groove b2-3, so that dirt such as sand and dust on the road surface enters the concrete foundation along with water flow and is deposited at the lowest part inside the concrete foundation.
Based on above embodiment, 1 inside rotations of every curb set up two and rotate piece 3, when the screens portion screens that rotates was in platform groove a, the atress that the curb lifted by the screens portion was even, and the more firm lifting of curb is in concrete foundation.
Based on the above embodiment, the upper end of the kerbstone 1 is provided with the lifting rings 1-1 which are convenient for lifting the kerbstone 1, the kerbstone is convenient to lift, and the rotating piece can be smoothly rotated.
Based on the above embodiment, the length of the concrete foundation 2 is 99cm as the length of the kerb 1, and a joint with the width of 1cm is left between two adjacent concrete foundations 2, so that the concrete foundation and the kerb are convenient to install in construction, and accumulated water in the concrete foundation is convenient to smoothly discharge in rainy days.
The road of this hidden road surface separate zone is used, buries the concrete basis in road preset position earlier, concrete basis upper surface and road surface parallel and level, then lifts the curb and installs inside concrete basis, and the curb does not in concrete basis completely, and curb upper surface and concrete basis upper surface parallel and level rotate the upper end torsion portion of rotation piece makes the lower extreme screens portion of rotating the piece stretch into platform groove b in, puts down the curb, when the road needs to change way or seal, lifts the curb, then rotates the rotation piece makes the screens portion of rotating the piece stretch into the platform inslot a of curb, puts down the curb, makes the curb under the lift of screens portion, exposes the concrete basis, realizes the closure or the change way of current road.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a hidden road surface median which characterized in that: the hidden road surface separation belt comprises kerbs (1) and concrete foundations (2), wherein a plurality of groups of combination bodies of the kerbs (1) and the concrete foundations (2) are connected in series to form the hidden road surface separation belt; the concrete foundation (2) is buried underground, the upper end face of the concrete foundation (2) is flush with the ground, at least two rotating pieces (3) are rotatably clamped in the kerbstone (1), and clamping parts (3-1) are arranged at the lower parts of the rotating pieces (3); the concrete foundation (2) is internally provided with a mounting groove (2-1) for mounting the curb (1), and is also provided with a platform groove a (2-2) and a platform groove b (2-3) for clamping the height position of the curb (1); when the rotating part (3) rotates to the position clamping part (3-1) to be clamped in the platform groove a (2-2), the position clamping part (3-1) supports the platform groove a (2-2) to support the kerbstone (1), and the kerbstone (1) is exposed out of the upper end face of the concrete foundation (2); when the clamping part (3-1) is clamped in the platform groove b (2-3), the upper end face of the kerbstone (1) is flush with the upper end face of the concrete foundation (2).
2. The concealed pavement divider of claim 1, wherein: the curb stone comprises a curb stone body and is characterized in that through holes penetrating through the upper end and the lower end of the curb stone body (1) are formed in the curb stone body (1), the rotating piece (3) further comprises a twisting portion (3-2) and a connecting steel pipe (3-3), the connecting steel pipe (3-3) penetrates into the through holes, the upper end of the connecting steel pipe (3-3) is connected with the twisting portion (3-2), the lower end of the connecting steel pipe is connected with a clamping portion (3-1), and the twisting portion (3-2) and the clamping portion (3-1) clamp the connecting steel pipe (3-3) in the curb stone body (1).
3. The concealed pavement divider of claim 2, wherein: the torsion part (3-2) is a cross-shaped steel plate, and the clamping part (3-1) is a straight-line-shaped steel plate.
4. The concealed pavement divider of claim 3, wherein: the length direction of the linear steel plate of the clamping part (3-1) is parallel to the extension direction of one steel plate in the cross-shaped steel plates of the torsion part (3-2).
5. The concealed pavement divider of claim 2, wherein: the curb stone is characterized in that a rotating groove is formed in the upper end of the curb stone (1), the torsion portion (3-2) is arranged in the rotating groove, the outer contour of the rotating groove is larger than the moving range of the torsion portion (3-2), and the torsion portion (3-2) is not higher than the upper end plane of the curb stone (1).
6. The concealed pavement divider of claim 1, wherein: the mounting groove (2-1) extends downwards and exceeds the depth of the platform groove b (2-3).
7. The concealed pavement divider of claim 1, wherein: two rotating pieces (3) are rotatably arranged in each kerbstone (1).
8. The concealed pavement divider of claim 1, wherein: and the upper end of the kerbstone (1) is provided with a hoisting ring (1-1) which is convenient for hoisting the kerbstone (1).
9. The concealed pavement divider of claim 1, wherein: the length of the concrete foundation (2) is the same as that of the curb (1).
10. The concealed pavement divider of claim 9, wherein: the length of the concrete foundations (2) is 99cm, and a seam with the width of 1cm is reserved between every two adjacent concrete foundations (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111081328.7A CN113944129A (en) | 2021-09-15 | 2021-09-15 | Hidden road surface median |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111081328.7A CN113944129A (en) | 2021-09-15 | 2021-09-15 | Hidden road surface median |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113944129A true CN113944129A (en) | 2022-01-18 |
Family
ID=79328501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111081328.7A Pending CN113944129A (en) | 2021-09-15 | 2021-09-15 | Hidden road surface median |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113944129A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60115917U (en) * | 1984-01-13 | 1985-08-06 | 積水樹脂株式会社 | Strut telescoping device |
| JPH0594321U (en) * | 1992-05-22 | 1993-12-24 | 有限会社伴野工業 | Elastic support structure for partition pole |
| JPH073736A (en) * | 1993-06-17 | 1995-01-06 | Sekisui Jushi Co Ltd | Road marking |
| JP3029848U (en) * | 1996-04-05 | 1996-10-11 | タカコ精機株式会社 | Car stop |
| JP2005171699A (en) * | 2003-12-15 | 2005-06-30 | Taguchi Home Service:Kk | Bumping post |
| JP2006009399A (en) * | 2004-06-25 | 2006-01-12 | Kaneso Co Ltd | Bumping post |
| JP2017043950A (en) * | 2015-08-26 | 2017-03-02 | 東北岡島工業株式会社 | Gutter cover with curbstone body |
| CN214089306U (en) * | 2020-11-09 | 2021-08-31 | 赵艳婷 | Curb foundation for municipal green construction road construction |
-
2021
- 2021-09-15 CN CN202111081328.7A patent/CN113944129A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60115917U (en) * | 1984-01-13 | 1985-08-06 | 積水樹脂株式会社 | Strut telescoping device |
| JPH0594321U (en) * | 1992-05-22 | 1993-12-24 | 有限会社伴野工業 | Elastic support structure for partition pole |
| JPH073736A (en) * | 1993-06-17 | 1995-01-06 | Sekisui Jushi Co Ltd | Road marking |
| JP3029848U (en) * | 1996-04-05 | 1996-10-11 | タカコ精機株式会社 | Car stop |
| JP2005171699A (en) * | 2003-12-15 | 2005-06-30 | Taguchi Home Service:Kk | Bumping post |
| JP2006009399A (en) * | 2004-06-25 | 2006-01-12 | Kaneso Co Ltd | Bumping post |
| JP2017043950A (en) * | 2015-08-26 | 2017-03-02 | 東北岡島工業株式会社 | Gutter cover with curbstone body |
| CN214089306U (en) * | 2020-11-09 | 2021-08-31 | 赵艳婷 | Curb foundation for municipal green construction road construction |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10233595B2 (en) | Hard pavement construction method for natural groundwater recharge | |
| CN206680830U (en) | A kind of highway center isolated area drainage system | |
| CN113944129A (en) | Hidden road surface median | |
| CN109295942B (en) | Ecological landscape type irrigation channel and construction method thereof | |
| CN213740391U (en) | Town road paves road surface structure that permeates water | |
| CN105178134A (en) | Ditch cover and road green color transformation method | |
| CN214573096U (en) | Pavement paving structure with high water permeability | |
| CN207537832U (en) | A kind of road surface water-permeable brick | |
| CN204959546U (en) | Cobblestone water conservancy diversion road | |
| CN107974890A (en) | A kind of permeable Route for pedestrians brick of convenient-laying | |
| CN211713983U (en) | Ecological slope protection for water and soil conservation | |
| CN209456840U (en) | A sidewalk with composite storage and drainage functions | |
| CN222275126U (en) | Combined type ground stone paving module with drainage function | |
| CN214834364U (en) | Anti-skid granite decorative plate | |
| CN217460462U (en) | Ecological anti-skidding vegetation block | |
| CN214697177U (en) | Town road lighting apparatus convenient to change and repair | |
| CN214783041U (en) | A ground curb for planting garden plants | |
| CN109797733B (en) | Perforating construction method for earthwork below highway drainage ditch | |
| CN217352540U (en) | Ecological highway maintenance device | |
| CN210420776U (en) | Garden health footpath | |
| CN117107585B (en) | Road pavement structure of sponge city and construction method thereof | |
| CN204940048U (en) | A kind of Afforestation Landscape road | |
| CN218562534U (en) | Integral combined anti-settling ductile cast iron rainwater grate | |
| CN222008526U (en) | Novel drainage canal of highway engineering | |
| CN211735574U (en) | Cut off water embankment side slope skeleton foundation trench excavation device |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220118 |