CN109371955B - Vacuum pre-pressing sand-paving dotting automatic mechanical device and construction method thereof - Google Patents
Vacuum pre-pressing sand-paving dotting automatic mechanical device and construction method thereof Download PDFInfo
- Publication number
- CN109371955B CN109371955B CN201811473306.3A CN201811473306A CN109371955B CN 109371955 B CN109371955 B CN 109371955B CN 201811473306 A CN201811473306 A CN 201811473306A CN 109371955 B CN109371955 B CN 109371955B
- Authority
- CN
- China
- Prior art keywords
- dotting
- wheel
- leveling
- wheels
- sanding
- 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.)
- Active
Links
- 238000010276 construction Methods 0.000 title claims abstract description 26
- 238000003825 pressing Methods 0.000 title abstract description 8
- 238000013461 design Methods 0.000 claims abstract description 25
- 239000000945 filler Substances 0.000 claims abstract description 10
- 239000004576 sand Substances 0.000 claims description 19
- 239000004575 stone Substances 0.000 claims description 6
- 241000196324 Embryophyta Species 0.000 claims description 4
- 239000002689 soil Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000009435 building construction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
Abstract
An automatic mechanical device for vacuum pre-pressing sanding and dotting and a construction method thereof, wherein the device comprises a traction device, a hopper, a leveling device and a dotting device which are sequentially connected along the edge; the dotting device comprises a main rod, a secondary rod between the main rods and dotting wheels connected with the main rods; the dotting wheel comprises a wheel and a dotting cylinder communicated with the inside of a wheel tire; the main rod is connected with the frame of the traction device through a vertical rod; the tire of the wheel is filled with dotting filler, the dotting cylinder is arranged along the radial direction of the wheel, the end part of the dotting cylinder exceeds the periphery of the wheel, and paving, leveling and dotting are sequentially carried out during construction; according to the invention, through the integrated design of the hopper and the leveling device, the row-shaped design of the dotting device can greatly save labor, and the interval arrangement of the main rods in the dotting device, the interval arrangement of the dotting wheels and the perimeter limitation of the dotting wheels ensure the dotting positioning accuracy; the dotting cylinder performs dotting through rotation of wheels, and automation and mechanization of dotting positioning are achieved.
Description
Technical Field
The invention belongs to the field of building construction, and particularly relates to a vacuum pre-pressing sand-paving dotting automatic mechanical device and a construction method thereof.
Background
Along with the development of building construction, in order to meet the functional requirements of the building, foundation treatment is often required, and in the foundation treatment technology, a sand cushion layer and a drainage plate are required to be paved in the vacuum preloading construction technology or the duplex vacuum preloading combined stacking technology, wherein the drainage plate is required to be positioned for construction, the sand cushion layer and the drainage plate are required to be manually paved in the traditional mode, a great amount of construction period and labor force are required to be spent in the traditional mode, the thickness of the sand cushion layer cannot be guaranteed to meet the design requirements, the accuracy of the positioning of the drainage plate cannot be guaranteed, and great construction difficulty is brought to the arrangement connection of the later-stage drainage plate and a vacuum tube, so that an automatic mechanical cushion layer paving and positioning dotting device is required to be provided to meet the requirements of construction accuracy, and further construction period and labor force are saved.
Disclosure of Invention
The invention provides a vacuum pre-pressing sand paving dotting automatic mechanical device and a construction method thereof, which are used for solving the problems, and the specific implementation scheme is as follows: the vacuum pre-pressing sand paving dotting automatic mechanical device comprises a traction device, and further comprises a hopper, a leveling device and a dotting device which are sequentially connected with the rear edge of the traction device; the dotting device comprises two main rods which are arranged in parallel at intervals, a secondary rod between the main rods and dotting wheels connected with the main rods; the dotting wheel is detachably connected with the main rod and comprises a wheel and a dotting cylinder communicated with the inside of a wheel tire.
The hopper is transversely arranged and arranged on the frame of the traction device; the width of the discharge hole of the hopper corresponds to the width of the paved layer, and the height of the discharge hole from the working surface is greater than the thickness of the paved layer.
The leveling device comprises at least one row of leveling brushes, the arrangement length corresponds to the width of a layer paved by the hopper, and the height away from the working surface corresponds to the thickness of the layer paved.
The leveling brush is of an integral strip structure, is transversely arranged and is connected with the frame of the traction device through a vertical rod; or the leveling brushes are a group of round brush heads and are transversely arranged and are arranged on the cross rod, and the cross rod is connected with the frame of the traction device through a vertical rod.
The main rods are perpendicular to the advancing direction of the traction device, and the width between the main rods corresponds to the distance between two rows of parallel design points; each main rod is provided with dotting wheels at intervals, wherein the lengths between adjacent dotting wheels on the same main rod correspond to the distances between adjacent design points in the horizontal direction, and the lengths between adjacent dotting wheels on different main rods correspond to the distances between adjacent design points in two rows in the horizontal direction.
The main rods are connected with the frame of the traction device through vertical rods, and a group of secondary rods which are parallel to each other and are arranged at intervals are connected between the two main rods.
The outer circumference of the wheel is twice the vertical distance between two rows of parallel design points, and the distance between the wheel and the working surface is not more than the thickness of the paving layer.
The tire of the wheel is filled with dotting filler, the dotting cylinder is of a hollow cylindrical structure, is arranged along the radial direction of the wheel, and the end part of the dotting cylinder exceeds the periphery of the wheel.
The frame comprises at least one connecting rod, and the front end part of the connecting rod is connected to the center of the rear part of the traction device; the rear end part is horizontally overhanging.
The construction method of the vacuum pre-pressing sand paving dotting automatic mechanical device comprises the following steps:
before construction, leveling a field, and removing weeds, corrosive soil, garbage and other barriers on the original ground;
step two, sequentially assembling a traction device, a hopper, a leveling device and a dotting device; wherein, the connection position of the dotting cylinders on the wheels is controlled in the manufacturing process, so that the connection position of each row of dotting cylinders is kept in the same horizontal line;
step three, filling sand and stone materials into a hopper, and filling dotting fillers into wheels;
step four, operating the hopper, measuring the relation between the paving layer and the ground clearance of the leveling device until the heights of the sand cushion layer and the leveling device are nearly flush, and then operating the traction device, and simultaneously starting the work of the dotting device;
step five, when the dotting device starts to work, the dotting cylinder is placed on an initial design point, and the dotting cylinder is sequentially dotted along with the rotation of the wheels;
step six, checking the position of the dotting cylinder or repositioning the dotting cylinder when filling dotting filler in the wheel or performing line feed construction;
and step seven, testing the thickness and the flatness of the paving layer in a sectional way, and if the accuracy of the point location is not consistent with the accuracy, adjusting in time.
The invention has the following beneficial effects:
according to the invention, through the integrated design of the hopper and the leveling device, the laying of a laying layer is effectively ensured, and the requirements on the thickness and the flatness of the laying layer in construction can be met; by the row-shaped design of the dotting device, the labor can be greatly saved, and the labor hour for positioning dotting is further saved; the distance setting of the main rods in the dotting device, the distance setting of the dotting wheels and the perimeter limitation of the dotting wheels ensure the accuracy of dotting positioning, wherein the dotting wheels can be subjected to position adjustment according to the distribution form and the distance requirement of design points; the dotting cylinder performs dotting through the rotation of the wheels, so that automation and mechanization of dotting positioning are realized; the dotting device and the leveling device are connected in a detachable mode, so that the dotting device is easy to replace and maintain during construction, the dotting device is simple and convenient to operate and easy to install, can be used for obtaining materials on site, and can be suitable for site construction environments to a great extent.
Drawings
FIG. 1 is a schematic view of a vacuum preloading sanding dotting robot and its construction work;
FIG. 2 is a side view of a vacuum pre-sanding dotting robot;
FIG. 3 is a top view of a vacuum preloading sanding dotting robot;
fig. 4 is a construction diagram of a dotting wheel.
Reference numerals: 1-a traction device; 2-a frame; 3-a hopper; 4-a vertical rod; 5-flattening the brush; 6-dotting device; 7-dotting wheels; 8-a cross bar; 9-a main rod; 10-times of poles; 11-wheels; 12-dotting cylinder; 13-designing a point location; 14-drainage plate.
Detailed Description
As shown in fig. 1, taking a drain board 14 arranged in a plum blossom shape commonly used in a vacuum preloading technology as an example, the distance h1=1200 mm between two adjacent design points 13 in the horizontal direction of the drain board 14, the vertical line distance of the two drain boards 14 is h2=1039 mm, the design thickness h3=300 mm of the sand cushion, and the included angle between the connecting line of two adjacent design points 13 on the two drain boards 14 and the horizontal line is 60 °; the direction of the arrow in the figure is the direction of travel of the device of the present invention, the left side of the drain plate 14 is a top view of the device, and the right side of the drain plate 14 is a side view of the device.
As shown in fig. 2 and 3, the vacuum pre-pressing sanding dotting automatic mechanical device comprises a traction device 1, and further comprises a hopper 3, a leveling device and a dotting device 6 which are sequentially connected with the rear edge of the traction device 1; the dotting device 6 comprises two main rods 9 which are arranged in parallel at intervals, a secondary rod 10 between the main rods 9 and dotting wheels 7 connected with the main rods 9; the main rod 9 and the secondary rod 10 are made of hollow steel pipes, and the dotting wheels 7 are small steel wheels; comprises a wheel 11 and a dotting cylinder 12 communicated with the inside of the tyre of the wheel 11, wherein the central axis of the wheel 11 is axially connected with the main rod 9.
In the embodiment, the hopper 3 is transversely arranged and arranged on the frame 2 of the traction device 1, the hopper 3 is divided into different bins, sand stones with different types and different particle sizes are corresponding to the sand stones, and the discharging speed of the sand stones is set according to the running speed of the traction device 1 so as to meet the requirement of paving the thickness of a cushion layer; wherein, 3 discharge gate widths of hopper correspond the width of laying the layer, and the height of discharge gate distance working face is greater than the thickness of laying the layer.
In the embodiment, the leveling device is a row of leveling brushes 5, the arrangement length corresponds to the width of a paved layer of the hopper 3, and the height from the working surface corresponds to the thickness of the paved layer; the leveling brushes 5 are a group of round steel wire brush heads and are transversely arranged and arranged on the cross rod 8, and the cross rod 8 is a long steel pipe; the cross rod 8 is connected with the frame 2 of the traction device 1 through a vertical rod 4; or the leveling brush 5 is of an integral strip structure, is transversely arranged and is connected with the frame 2 of the traction device 1 through a vertical rod 4.
In this embodiment, the main bars 9 are perpendicular to the travelling direction of the traction device 1, and the width between the main bars 9 corresponds to the distance between two rows of parallel design points 13, which is H2; the dotting wheels 7 are arranged on each main rod 9 at intervals, wherein the length between the adjacent dotting wheels 7 on the same main rod 9 corresponds to the distance H1 between the adjacent design points 13 in the horizontal direction; the length between the adjacent dotting wheels 7 on different main rods 9 is 2H1 corresponding to the distance between the adjacent design points 13 in the two rows of drainage plates 14 in the horizontal direction, and the included angle between the connecting line of the corresponding adjacent design points 13 in the two rows of drainage plates 14 and the horizontal line is 60 degrees.
In the embodiment, the outer circumference of the wheel 11 is twice the vertical distance between two rows of parallel design points 13, and the distance between the wheel and the working surface does not exceed the thickness of the paving layer; thus, the small steel wheel diameter set = 2H 1/pi, from which the small steel wheel diameter D = 661.6mm can be pushed out; the tire of the wheel 11 is filled with a dotting fine lime filler, the dotting cylinder 12 is a hollow steel cylinder, and the dotting cylinder is arranged along the radial direction of the wheel 11, and the end part of the dotting cylinder exceeds the periphery of the wheel 11.
In the embodiment, a main rod 9 is connected with a frame 2 of a traction device 1 through a vertical rod 4, and a group of secondary rods 10 which are parallel to each other and are arranged at intervals are connected between the two main rods 9; the frame 2 comprises at least one connecting rod, and the front end part of the connecting rod is connected to the center of the rear part of the traction device 1; the rear end part horizontally overhangs; the vertical rod 4 and the connecting rod are made of hollow steel pipes, the weight and the distribution of devices on the connecting rod are considered when the connecting rod is made, the length and the wall thickness of the steel pipes are determined, the vertical rod 4 can also be a scaffold vertical pipe, and the end parts of the vertical rod 4 are detachably connected with corresponding components by adopting threads.
Referring to fig. 1 to 3, the construction method of the vacuum pre-compacting sanding dotting automatic mechanical device is further described, and the steps are as follows:
before construction, all weeds, tree roots, crop stubbles, corrosive soil, garbage and the like on the original ground are removed, so that the weeds, the tree roots, the crop stubbles, the corrosive soil, the garbage and the like are prevented from puncturing a vacuum film, and the ground leveling is ensured; the sand material used for the sand cushion is directly transported to the site from the sand producing place.
Step two, sequentially assembling a traction device 1, a hopper 3, a leveling device and a dotting device 6; wherein, the connection position of the dotting drums 12 on the wheel 11 is controlled in the manufacturing process, so that the connection positions of the dotting drums 12 in each row are kept in the same horizontal line.
Step three, sand and stone materials are filled in the hopper 3, and dotting fillers are filled in the wheels 11.
And fourthly, operating the hopper 3, measuring the relation between the paving layer and the height of the leveling device from the ground until the sand cushion layer is nearly flush with the height of the leveling device, and then operating the traction device 1, and simultaneously starting the work of the dotting device 6.
And fifthly, when the dotting device 6 starts to work, the dotting cylinder 12 is placed on the initial design point 13, and the dotting cylinder 12 is sequentially dotted along with the rotation of the wheel 11.
Step six, when the dotting filler in the wheel 11 is filled or the line feed construction is performed, the position of the dotting cylinder 12 is checked or the dotting cylinder 12 is replaced.
And step seven, testing the thickness and the flatness of the paving layer in a sectional way, and if the accuracy of the point location is not consistent with the accuracy, adjusting in time.
It is to be understood that the above examples are presented solely for the purpose of clearly illustrating the salient features of the present invention and are not intended to limit the scope of the present invention; other variations and modifications of the present invention will be apparent to those of skill in the art, and it is intended to cover all such modifications and variations of this invention without departing from the scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides an automatic mechanical device of vacuum preloading sanding dotting, contains draw gear (1), its characterized in that: the automatic feeding device also comprises a hopper (3), a leveling device and a dotting device (6) which are sequentially connected with the rear edge of the traction device (1); the dotting device (6) comprises two main rods (9) which are arranged in parallel at intervals, a secondary rod (10) between the main rods (9) and dotting wheels (7) connected with the main rods (9); the dotting wheel (7) is detachably connected with the main rod (9) and comprises a wheel (11) and a dotting cylinder (12) communicated with the inside of a tire of the wheel (11).
2. The vacuum preloading sanding dotting robot of claim 1, wherein: the hopper (3) is transversely arranged and arranged on the frame (2) of the traction device (1); the width of the discharge hole of the hopper (3) corresponds to the width of the paved layer, and the height of the discharge hole from the working surface is greater than the thickness of the paved layer.
3. The vacuum preloading sanding dotting robot of claim 1, wherein: the leveling device comprises at least one row of leveling brushes (5), the arrangement length corresponds to the width of a paved layer of the hopper (3), and the height from the working surface corresponds to the thickness of the paved layer.
4. A vacuum preloading sanding dotting robot as defined in claim 3, wherein: the leveling brush (5) is of an integral strip structure, is transversely arranged and is connected with the frame (2) of the traction device (1) through a vertical rod (4);
or the leveling brushes (5) are a group of round brush heads and are transversely arranged and are arranged on the cross rod (8), and the cross rod (8) is connected with the frame (2) of the traction device (1) through the vertical rods (4).
5. The vacuum preloading sanding dotting robot of claim 1, wherein: the main rods (9) are perpendicular to the advancing direction of the traction device (1), and the width between the main rods (9) corresponds to the distance between two rows of parallel design points (13); each main rod (9) is provided with dotting wheels (7) at intervals, wherein the lengths between adjacent dotting wheels (7) on the same main rod (9) correspond to the distances between adjacent design points (13) in the horizontal direction, and the lengths between adjacent dotting wheels (7) on different main rods (9) correspond to the distances between adjacent design points (13) in two rows in the horizontal direction.
6. The vacuum preloading sanding dotting robot of claim 5, wherein: the main rods (9) are connected with the frame (2) of the traction device (1) through vertical rods (4), and a group of secondary rods (10) which are parallel to each other and are arranged at intervals are connected between the two main rods (9).
7. The vacuum preloading sanding dotting robot of claim 1, wherein: the outer circumference of the wheel (11) is twice the vertical distance between two rows of parallel design points (13), and the distance between the wheel (11) and the working surface is not more than the thickness of the paved layer.
8. The vacuum preloading sanding dotting robot of claim 7, wherein: the tire of the wheel (11) is filled with dotting filler, the dotting cylinder (12) is of a hollow cylindrical structure, is arranged along the radial direction of the wheel (11), and the end part of the dotting cylinder exceeds the periphery of the wheel (11).
9. A vacuum preloading sanding dotting robot as defined in any of claims 2, 4 and 6, wherein: the frame (2) comprises at least one connecting rod, and the front end part of the connecting rod is connected to the center of the rear part of the traction device (1); the rear end part is horizontally overhanging.
10. Construction method of a vacuum preloading sanding dotting robot according to any of the claims 1-9, characterized by the steps of:
before construction, leveling a field, and removing weeds, corrosive soil and garbage on the original ground;
step two, sequentially assembling a traction device (1), a hopper (3), a leveling device and a dotting device (6); wherein, the connection position of the dotting drums (12) on the wheel (11) is controlled in the manufacturing process, so that the connection position of each dotting drum (12) in each row is kept in the same horizontal line;
step three, filling sand and stones into the hopper (3), and filling dotting fillers into the wheels (11);
step four, operating the hopper (3), measuring the relation between the paving layer and the ground clearance of the leveling device until the heights of the sand cushion layer and the leveling device are nearly flush, and then operating the traction device (1) and simultaneously starting the work of the dotting device (6);
step five, when the dotting device (6) starts to work, the dotting cylinder (12) is placed on an initial design point position (13), and the dotting cylinder (12) is sequentially dotted along with the rotation of the wheel (11);
step six, checking the position of the dotting cylinder (12) or repositioning the dotting cylinder (12) when filling dotting filler in the wheel (11) or performing line feed construction;
and step seven, testing the thickness and the flatness of the paving layer in a sectional way, and if the accuracy of the point location is not consistent with the accuracy, adjusting in time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811473306.3A CN109371955B (en) | 2018-12-04 | 2018-12-04 | Vacuum pre-pressing sand-paving dotting automatic mechanical device and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811473306.3A CN109371955B (en) | 2018-12-04 | 2018-12-04 | Vacuum pre-pressing sand-paving dotting automatic mechanical device and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109371955A CN109371955A (en) | 2019-02-22 |
| CN109371955B true CN109371955B (en) | 2024-01-30 |
Family
ID=65376715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811473306.3A Active CN109371955B (en) | 2018-12-04 | 2018-12-04 | Vacuum pre-pressing sand-paving dotting automatic mechanical device and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109371955B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29520147U1 (en) * | 1995-12-19 | 1996-02-08 | Voegele Ag J | Slipform paver for concrete construction |
| CN1664245A (en) * | 2005-04-01 | 2005-09-07 | 东南大学 | Operation method for consolidating soft soil foundation by pneumatic flerry vacuum preloading method |
| CN101220598A (en) * | 2007-11-02 | 2008-07-16 | 广州市盛洲实业有限公司 | Vacuum preloading method for non-water discharge sand cushion |
| CN101672031A (en) * | 2009-09-24 | 2010-03-17 | 中交一航局第四工程有限公司 | Construction method of meshy drainage mat for replacing overspread sand mat |
| CN209178975U (en) * | 2018-12-04 | 2019-07-30 | 中建一局集团第三建筑有限公司 | A kind of vacuum preloading sanding gets robot apparatus ready |
-
2018
- 2018-12-04 CN CN201811473306.3A patent/CN109371955B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29520147U1 (en) * | 1995-12-19 | 1996-02-08 | Voegele Ag J | Slipform paver for concrete construction |
| CN1664245A (en) * | 2005-04-01 | 2005-09-07 | 东南大学 | Operation method for consolidating soft soil foundation by pneumatic flerry vacuum preloading method |
| CN101220598A (en) * | 2007-11-02 | 2008-07-16 | 广州市盛洲实业有限公司 | Vacuum preloading method for non-water discharge sand cushion |
| CN101672031A (en) * | 2009-09-24 | 2010-03-17 | 中交一航局第四工程有限公司 | Construction method of meshy drainage mat for replacing overspread sand mat |
| CN209178975U (en) * | 2018-12-04 | 2019-07-30 | 中建一局集团第三建筑有限公司 | A kind of vacuum preloading sanding gets robot apparatus ready |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109371955A (en) | 2019-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203912517U (en) | The two strain precision sowers in a kind of corn one cave | |
| CN103498555A (en) | Adjustable large-area floor steel channel formwork system and construction method thereof | |
| CN103603321B (en) | Circulation is gone forward one by one compaction type Lining in Canals by Mechanized Paver | |
| CN109371955B (en) | Vacuum pre-pressing sand-paving dotting automatic mechanical device and construction method thereof | |
| EP3416793B1 (en) | Flexible mat forming system and method | |
| CN109056756B (en) | A kind of suspension device and its construction method of High water cut side slope | |
| CN111648169A (en) | Elastic supporting block type integral ballast bed rapid construction method | |
| DE202007019147U1 (en) | Device for producing manhole bases and manhole base | |
| CN209178975U (en) | A kind of vacuum preloading sanding gets robot apparatus ready | |
| CN202247851U (en) | Numerically controlled compaction pile quantificationally and automatically backfilling equipment | |
| CN102031757B (en) | Method for constructing bottom plate guide layer of jacked-in frame bridge | |
| CN107881878B (en) | Gravel layer framework filling device for road construction and using method thereof | |
| CN103909566A (en) | Tubular pile die cleaning device | |
| CN209941444U (en) | Road mixing method lime soil construction limit portion compaction device | |
| CN210658503U (en) | Backfill hopper car | |
| CN210216063U (en) | Landscape plants grass brick with groined type | |
| CN220953598U (en) | Earthwork backfill device | |
| CN112031001A (en) | Comprehensive treatment method for water and soil loss | |
| JP5562779B2 (en) | How to install a solar panel foundation | |
| CN111172989A (en) | Foundation pit construction method for communication iron tower installation foundation | |
| CN205704614U (en) | Hexagon concrete sash block forming die | |
| CN114960327B (en) | Construction method of tree pit structure of road surface green belt | |
| EP2011615B1 (en) | Method and device for producing lower shaft parts with variable channels. | |
| CN203792483U (en) | Pipe pile mold cleaner | |
| CN117026714B (en) | Construction method of high embankment |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |