CN112982373A - Milling and digging head of milling and digging machine - Google Patents
Milling and digging head of milling and digging machine Download PDFInfo
- Publication number
- CN112982373A CN112982373A CN202110290245.2A CN202110290245A CN112982373A CN 112982373 A CN112982373 A CN 112982373A CN 202110290245 A CN202110290245 A CN 202110290245A CN 112982373 A CN112982373 A CN 112982373A
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- Prior art keywords
- milling
- excavating machine
- head
- cylindrical base
- teeth
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- 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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- 238000003801 milling Methods 0.000 title claims abstract description 115
- 239000002689 soil Substances 0.000 claims abstract description 34
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 33
- 238000003756 stirring Methods 0.000 claims abstract description 17
- 238000000429 assembly Methods 0.000 claims abstract description 5
- 230000000712 assembly Effects 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 241000219122 Cucurbita Species 0.000 description 1
- 235000009852 Cucurbita pepo Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010862 gear shaping Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
- E02F9/2866—Small metalwork for digging elements, e.g. teeth scraper bits for rotating digging elements
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
- E02F9/2883—Wear elements for buckets or implements in general
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a milling and digging head of a milling and digging machine, which comprises: the machine head of the milling and excavating machine is provided with a rotating component for rotating, stirring and mixing the curing agent and the soil body. The rotary assemblies comprise spiral baffles, cylindrical base parts and milling teeth, the cylindrical base parts of the two rotary assemblies are fixed at two ends of a milling and excavating machine head, and the two cylindrical base parts are obliquely installed from the top to the bottom of the milling and excavating machine head to form an included angle alpha, so that the milling teeth installed on the two spiral baffles are distributed in an opposite staggered interval manner; when the milling and excavating machine head rotates, one of the milling and planing teeth of the two spiral baffles can uniformly mix the curing agent and the soil body below the central line of the milling and excavating machine head, when the soil body of a deep foundation is deep, one of the milling and planing teeth of the two spiral baffles can plane and excavate large hard stones, the problem that the part under the central line of the milling and excavating machine head collides with the stones is solved, the base part can move forward and is not blocked, and the construction progress is improved.
Description
Technical Field
The invention relates to a milling and digging head of a milling and digging machine, and belongs to the technical field of construction equipment.
Background
The basic curing treatment technology is that soil bodies such as soft soil and the like are cured on site by using a curing agent to enable the soil bodies to reach certain strength, thereby meeting the required bearing requirement, simultaneously forming a plate body to achieve the purpose of foundation treatment, and being combined with a composite foundation to carry out deep treatment, the curing agent generally used is formed by taking a high-strength inorganic cementing material as a main material, adding other auxiliary materials (such as a high-efficiency excitant and the like) and a water sealing agent, and the action mechanism is as follows: in general, when the water content of a sand soil sample to be treated is high (the water content is 30-120%), the curing agent (slurry) can consume free water in the sand soil and convert the free water into crystal water; the activity of the sandy soil grains is excited, and the sandy soil becomes an integral plate layer structure by utilizing the reaction between the sandy soil grains and the sandy soil grains; during construction, the key procedures are as follows: the added curing agent needs to be uniformly mixed into the soil body to ensure uniform mixing, so that the strength of the curing agent meets the index requirement, the overlapping width of each block is not less than 5cm, the missing of mixing is avoided, the curing can be uniform, the stability of the foundation is improved, and the effect is good;
when the milling and digging head of the milling and digging machine which uses the Chinese patent No. 2015202824006 stirs the solidified rotary stirring agent and the soil body, the solidified agent and the soil body which are positioned under the central line of the base are difficult to be uniformly mixed, and meanwhile, large hard stones can exist in the deep foundation soil body, so that the part under the central line of the base is easy to collide, the base is damaged, the base can be even prevented from advancing, and the construction progress is reduced.
Disclosure of Invention
In order to solve the technical problem, the invention provides a milling and digging head of a milling and digging machine.
The invention is realized by the following technical scheme.
The invention provides a stirring device for foundation solidification, which comprises: the machine head of the milling and excavating machine is fixed on the frame, and a rotating assembly for rotating, stirring and mixing the curing agent and the soil body is arranged on the machine head of the milling and excavating machine.
The rotating assembly comprises a spiral baffle, a cylindrical base and milling teeth, wherein the spiral baffle is spirally fixed on the cylindrical base, and a plurality of milling teeth are fixed on the spiral baffle at intervals.
The milling and digging machine comprises a milling and digging machine head, wherein two ends of the milling and digging machine head are fixedly provided with two cylindrical base parts of two rotating assemblies, the two cylindrical base parts are obliquely arranged from the top to the bottom of the milling and digging machine head to form an included angle alpha, so that milling and digging teeth arranged on two spiral baffles are distributed in an opposite staggered interval mode, and one milling and digging tooth is ensured to be positioned below the central line of the milling and digging machine head during rotation.
The included angle alpha formed by the two cylindrical base parts inclining from the end of the frame to the milling and excavating machine head is 140 degrees +/-5 degrees, and one milling tooth is ensured to be positioned below the center line of the frame.
The inclined included angle of the small ends of the milling teeth on the two cylindrical base parts faces the two cylindrical base parts ensures that the milling teeth can be quickly dug when encountering stones, and meanwhile, the small ends can better stir and mix the curing agent and the soil body.
The height of the spiral baffle is 100mm, the spiral baffle is spirally arranged around the cylindrical base part, and the cylindrical base parts at two sides are respectively provided with a circle of spiral baffle.
The milling teeth are fixed on the milling teeth base, and the milling teeth base is fixed on the spiral baffle through bolts and is 100mm higher than the spiral baffle.
The device also comprises a guide pipe for conveying the curing agent, and a curing liquid outlet of the guide pipe is positioned at the bottom of the milling and excavating machine head.
The machine head of the milling and excavating machine rotates to drive the rotating assembly to rotate to crush and stir soil, the pressurized curing agent is conveyed into the guide pipe to be discharged, and under the rotating and stirring action of the rotating assembly, the deep foundation soil and the curing agent are quickly mixed uniformly, so that the construction efficiency is improved.
The middle part of the guide pipe is fixed on the rack, one end of the guide pipe is positioned on the middle line of the rack close to the rotating component section, the curing agent is conveyed to the middle line of the rack from the guide pipe and is discharged to the two sides to be uniformly spread, and the rotating component is enabled to rotate to uniformly stir and mix the curing agent and the soil body.
The pipe has three extension sections, and three extension sections all are located the different position of rotating assembly's under bottom orientation, are favorable to the transport and the diffusion infiltration of curing agent.
The conduit is a 50mm diameter pipe.
The invention has the beneficial effects that: when the milling and excavating machine head rotates, one of the milling and planing teeth of the two spiral baffles can uniformly mix a curing agent and a soil body below the central line of the milling and excavating machine head, when the soil body of a deep foundation is deep, one of the milling and planing teeth of the two spiral baffles can plane and excavate large hard stones, the problem that the part under the central line of the milling and excavating machine head collides with the stones is solved, the damage to the base is avoided, the forward movement of the base cannot be blocked, and the construction progress is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a gear milling and planing base according to the present invention;
FIG. 3 is a schematic structural view of the rotating assembly of the present invention;
in the figure: 1-a rotating assembly; 2-a frame; 3-a catheter; 4-a spiral baffle; 5-a cylindrical base; 6-milling and digging machine head; 7-milling and planing teeth; 8-milling a gear shaping base; 31-extension.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
See fig. 1-3.
The invention relates to a milling and digging head of a milling and digging machine, which comprises: the machine head 6 of the milling and excavating machine is fixed on the frame 2, and the rotating assembly 1 for rotationally stirring and mixing the curing agent and the soil body is arranged on the machine head 6 of the milling and excavating machine.
The rotating assembly 1 comprises a spiral baffle 4, a cylindrical base 5 and milling teeth 7, the spiral baffle 4 is fixed on the cylindrical base 5 in a spiral welding mode, and the milling teeth 7 are fixed on the spiral baffle 4 at intervals.
The height of the spiral baffle 4 is 100mm, the spiral baffle is spirally arranged around the cylindrical base part 5, and the cylindrical base parts 5 at two sides are respectively provided with a circle of spiral baffle 4.
The milling teeth 7 are welded and fixed on the milling teeth base 8, and the milling teeth base 8 is fixed on the spiral baffle 4 through bolts and is 100mm higher than the spiral baffle.
The two ends of the milling and excavating machine head 6 are fixedly provided with the cylindrical base parts 5 of the two rotating assemblies 1, the two cylindrical base parts 5 are obliquely arranged from the top to the bottom of the milling and excavating machine head 6 to form an included angle alpha, so that the milling teeth 7 arranged on the two spiral baffles 4 are distributed in an opposite staggered interval manner, and one milling tooth 7 is ensured to be positioned below the central line of the milling and excavating machine head 6 during rotation. When the milling and excavating machine head 6 rotates, the fact that the curing agent and the soil body below the central line of the milling and excavating machine head 6 are uniformly mixed by one of the milling and planing teeth 7 of the two spiral baffles 4 is guaranteed, when the soil body is deep foundation, one of the milling and planing teeth 7 of the two spiral baffles 4 can plane and excavate large hard stones, the problem that the part under the central line of the milling and excavating machine head 6 (namely the base) is collided with the stones is solved, damage to the base is avoided, the forward movement of the base cannot be blocked, and the construction progress is improved.
The included angle alpha formed by the two cylindrical base parts 5 inclining from the end of the rack 2 to the milling and excavating machine head 6 is 140 degrees +/-5 degrees, and one milling and planing tooth 7 is ensured to be positioned below the central line of the rack 2.
The inclined included angle of the small ends of the milling and planing teeth 7 on the two cylindrical base parts 5 faces the two cylindrical base parts 5, the milling and planing teeth 7 can be rapidly planed and dug when encountering stones, and meanwhile, the small ends can better stir and mix the curing agent and the soil body.
When the milling and digging head of the milling and digging machine with the Chinese patent number of 2015202824006 is used for stirring the curing agent and the soil body, a gourd ladle or an iron shovel is manually used for scattering the curing slurry on the surface layer of the soil body, the milling and digging head needs to rotate and stir for a long time, so that the deep foundation soil body and the curing agent can be uniformly mixed, and the construction efficiency is reduced.
The device also comprises a conduit 3 for conveying the curing agent, and a curing liquid outlet of the conduit 3 is positioned at the bottom of the milling and excavating machine head 6.
Milling and excavating the machine and using bolt and 2 fixed connection of frame, milling and excavating the rotatory rotating assembly 1 that drives of quick-witted aircraft nose 6 and carry out broken stirring to the soil body, discharge in being carried to pipe 3 by the pressurized curing agent, under the rotatory stirring effect of rotating assembly 1, realize fast that deep foundation soil body and curing agent misce bene, improved the efficiency of construction.
The middle part of the guide pipe 3 is fixed on the frame 2, one end of the guide pipe 3 is positioned on the middle line of the frame 2 close to the section 1 of the rotating component, the curing agent is conveyed from the guide pipe 3 to the middle line of the frame 2 and is discharged to the two sides to be uniformly spread, and the rotating component 1 is ensured to rotate to uniformly stir and mix the curing agent and the soil body.
The conduit 3 is provided with three extension sections 31, and the three extension sections 31 are all positioned at the bottom of the rotating assembly 1 and face different directions, so that the conveying and the diffusion and the penetration of the curing agent are facilitated.
The conduit 3 is a 50mm diameter pipe.
Claims (10)
1. A milling and excavating head of a milling and excavating machine, comprising: the machine head (6) of the milling and excavating machine is fixed on the frame (2), and the rotating assembly (1) for rotationally stirring and mixing the curing agent and the soil body is mounted on the machine head (6).
2. The milling head of a milling and excavating machine as claimed in claim 1, characterized in that: the two ends of the milling and excavating machine head (6) are fixedly provided with the cylindrical base parts (5) of the two rotating assemblies (1), the two cylindrical base parts (5) are obliquely installed from the top to the bottom of the milling and excavating machine head (6) to form an included angle alpha, so that the milling and planing teeth (7) installed on the two spiral baffles (4) are distributed in an opposite staggered interval mode, and one milling and planing tooth (7) is guaranteed to be located below the central line of the milling and excavating machine head (6) during rotation.
3. The milling head of a milling and excavating machine as claimed in claim 2, characterized in that: the rotating assembly (1) comprises a spiral baffle (4), a cylindrical base (5) and milling teeth (7), the spiral baffle (4) is spirally fixed on the cylindrical base (5), and the milling teeth (7) are fixed on the spiral baffle (4) at intervals.
4. A milling head for a milling and excavating machine according to claim 3 wherein: the height of the spiral baffle (4) is 100mm, the spiral baffle is spirally arranged around the cylindrical base part (5) for one circle, and the cylindrical base parts (5) at two sides are respectively provided with a circle of spiral baffle (4).
5. The milling head of a milling and excavating machine as claimed in claim 4, characterized in that: the milling and planing teeth (7) are fixed on the milling and planing tooth base (8), and the milling and planing tooth base (8) is fixed on the spiral baffle (4) through bolts and is 100mm higher than the spiral baffle.
6. The milling head of a milling and excavating machine as claimed in claim 5, characterized in that: the included angle alpha formed by the two cylindrical base parts (5) inclining from the end of the rack (2) to the milling and excavating machine head (6) is 140 degrees +/-5 degrees, and one milling and planing tooth (7) is ensured to be positioned below the center line of the rack (2).
7. The milling head of a milling and excavating machine as claimed in claim 6, characterized in that: the small ends of the milling teeth (7) on the two cylindrical base parts (5) face the inclined included angle direction of the two cylindrical base parts (5).
8. A milling head for a milling and excavating machine according to claim 1 or 7, characterized in that: the device also comprises a conduit (3) for conveying the curing agent, and a curing liquid outlet of the conduit (3) is positioned at the bottom of the milling and excavating machine head (6).
9. The milling head of a milling and excavating machine as claimed in claim 8, characterized in that: the middle part of the guide pipe (3) is fixed on the rack (2), one end of the guide pipe (3) is positioned on the middle line of the rack (2) close to the section of the rotating component (1), and the curing agent is conveyed from the guide pipe (3) to the middle line of the rack (2) and is discharged to the two sides to be uniformly spread.
10. The milling head of a milling and excavating machine as claimed in claim 9, characterized in that: the guide pipe (3) is provided with three extension sections (31), and the three extension sections (31) are all positioned right below the rotating assembly (1) and the bottoms of the three extension sections face different directions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110290245.2A CN112982373A (en) | 2021-03-18 | 2021-03-18 | Milling and digging head of milling and digging machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110290245.2A CN112982373A (en) | 2021-03-18 | 2021-03-18 | Milling and digging head of milling and digging machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112982373A true CN112982373A (en) | 2021-06-18 |
Family
ID=76333271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110290245.2A Pending CN112982373A (en) | 2021-03-18 | 2021-03-18 | Milling and digging head of milling and digging machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112982373A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10227028A (en) * | 1997-02-13 | 1998-08-25 | Koken Boring Mach Co Ltd | Ground excavation and agitation device |
| RU2005123486A (en) * | 2004-09-03 | 2007-01-27 | Бауэр Машинен ГмбХ (DE) | DISC MILLER AND MILLING DIGGER INSTALLATION WITH SUCH DISC MILL |
| CN101748762A (en) * | 2008-12-11 | 2010-06-23 | 芬兰阿陆公司 | Device for mixing soil materials |
| CN104806261A (en) * | 2015-05-04 | 2015-07-29 | 宁波市恒通液压科技有限公司 | Milling and excavating head of milling and excavating machine |
| CN108756922A (en) * | 2018-04-13 | 2018-11-06 | 江苏路润建设工程有限公司 | Frame head apparatus is dug in milling |
| CN112144506A (en) * | 2020-09-28 | 2020-12-29 | 宁波恩特重工科技有限公司 | Silt in-situ stirrer |
| KR102202627B1 (en) * | 2020-03-03 | 2021-01-14 | 반석기초이앤씨(주) | Rolling mixer for soil improving |
| CN215165452U (en) * | 2021-03-18 | 2021-12-14 | 中国水利水电第九工程局有限公司 | Stirring device for foundation solidification |
-
2021
- 2021-03-18 CN CN202110290245.2A patent/CN112982373A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10227028A (en) * | 1997-02-13 | 1998-08-25 | Koken Boring Mach Co Ltd | Ground excavation and agitation device |
| RU2005123486A (en) * | 2004-09-03 | 2007-01-27 | Бауэр Машинен ГмбХ (DE) | DISC MILLER AND MILLING DIGGER INSTALLATION WITH SUCH DISC MILL |
| CN101748762A (en) * | 2008-12-11 | 2010-06-23 | 芬兰阿陆公司 | Device for mixing soil materials |
| EP2199468A1 (en) * | 2008-12-11 | 2010-06-23 | Allu Finland Oy | Device for mixing soil materials |
| CN104806261A (en) * | 2015-05-04 | 2015-07-29 | 宁波市恒通液压科技有限公司 | Milling and excavating head of milling and excavating machine |
| CN108756922A (en) * | 2018-04-13 | 2018-11-06 | 江苏路润建设工程有限公司 | Frame head apparatus is dug in milling |
| KR102202627B1 (en) * | 2020-03-03 | 2021-01-14 | 반석기초이앤씨(주) | Rolling mixer for soil improving |
| CN112144506A (en) * | 2020-09-28 | 2020-12-29 | 宁波恩特重工科技有限公司 | Silt in-situ stirrer |
| CN215165452U (en) * | 2021-03-18 | 2021-12-14 | 中国水利水电第九工程局有限公司 | Stirring device for foundation solidification |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210618 |
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| RJ01 | Rejection of invention patent application after publication |