CN105442553A - Circular-arc splicing equipment for L-shaped piles and rectangular piles - Google Patents
Circular-arc splicing equipment for L-shaped piles and rectangular piles Download PDFInfo
- Publication number
- CN105442553A CN105442553A CN201511012365.7A CN201511012365A CN105442553A CN 105442553 A CN105442553 A CN 105442553A CN 201511012365 A CN201511012365 A CN 201511012365A CN 105442553 A CN105442553 A CN 105442553A
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- transmission case
- fixed
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- concrete
- pile
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- 239000002689 soil Substances 0.000 claims abstract description 37
- 230000005540 biological transmission Effects 0.000 claims description 74
- 238000003756 stirring Methods 0.000 claims description 31
- 238000005553 drilling Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 15
- 239000004568 cement Substances 0.000 claims description 12
- 238000005520 cutting process Methods 0.000 claims description 10
- 238000003032 molecular docking Methods 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 3
- 238000004513 sizing Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/16—Plural down-hole drives, e.g. for combined percussion and rotary drilling; Drives for multi-bit drilling units
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/001—Drilling a non circular hole
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2200/00—Geometrical or physical properties
- E02D2200/16—Shapes
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Paleontology (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses circular-arc splicing equipment for L-shaped piles and rectangular piles. A plurality of concrete L-shaped splicing piles which are spaced by a distance of one rectangular splicing pile are manufactured; when concrete strength of the L-shaped splicing piles at the two sides reaches certain strength, one cemented soil rectangular splicing pile is manufactured within the distance of every two concrete L-shaped splicing piles by use of a rectangular pile forming machine according to the working mode of the rectangular pile forming machine, so that a convex circular-arc end head at the left end of the cemented soil rectangular splicing pile between every two concrete L-shaped splicing piles is fitted to a concave circular-arc end head at the right end of the left concrete L-shaped splicing pile, and a convex circular-arc end head at the right end of the cemented soil rectangular splicing pile is fitted to a concave circular-arc end head at the left end of the right concrete L-shaped splicing pile, and therefore, a cemented soil pile wall on which the plurality of concrete L-shaped splicing piles are in mutual circular-arc splicing with the cemented soil rectangular splicing pile between every two concrete L-shaped splicing piles is formed; and the cemented soil pile wall is used for earth retaining and leakage preventing of a building foundation.
Description
Technical field
The present invention relates to the L stake and rectangular pile circular arc docking device that use in a kind of circular arc docking device, particularly a kind of building foundation engineering.
Background technology
Cement-soil pile forming machine is by the multiple drill bit rotational of power drive, the earth of drill bit bottom cuts and stirs into cement earth pile with cement paste by multiple drill bit in rotation process, at present, formed by the Soil-cement rig of other pattern, pile body is all the assembly of multiple cement-soil cylinder, is not the mutual grafting piling wall of L shape concrete pile and rectangle cement earth pile.
Summary of the invention
The present invention compensate for above shortcoming, provides a kind of L stake and the rectangular pile circular arc docking device that can manufacture L shape concrete pile body and the mutual circular arc grafting of rectangle cement soil pile.
The present invention is achieved through the following technical solutions:
A kind of L stake and rectangular pile circular arc docking device, comprise L stake pile forming machine and rectangular pile pile forming machine.
L stake pile forming machine comprises following structure: the left end rear portion of crossbeam one is fixed in the front end of crossbeam two, form a L-type component thus, the center of gravity position of L-type component is fixed in the lower end of support bar one, the left end bottom of crossbeam one is fixed with vertical rod one, the lower end of vertical rod one is fixed with motor one, the lower end of motor one is fixed with transmission case one, the middle lower portion of crossbeam one is fixed with vertical rod two, the lower end of vertical rod two is fixed with transmission case two, the right-hand member bottom of crossbeam one is fixed with vertical rod three, the lower end of vertical rod three is fixed with transmission case three, the rear end lower of crossbeam two is fixed with vertical rod four, the lower end of vertical rod four is fixed with transmission case four, transmission case one, transmission case two, transmission case three, the lower end of transmission case four is respectively equipped with a drilling rod, the lower end of each drilling rod fixes a drill bit respectively, a torsion shaft one is provided with between transmission case one and transmission case two, a torsion shaft one is provided with between transmission case two and transmission case three, a torsion shaft two is provided with between transmission case one and transmission case four, a link arm is fixed on the middle both sides of each torsion shaft one respectively, and the outer end of each link arm is fixed one respectively and stirred arm one, a link arm is fixed on the middle both sides of torsion shaft two respectively, and the outer end of each link arm is fixed one respectively and stirred arm two, the left front of transmission case one and left back export a torsion shaft three respectively, the left end of each torsion shaft three fixes a recessed dise knife respectively, the right front of transmission case three and right back export a torsion shaft three respectively, and the right-hand member of this each torsion shaft three fixes a recessed dise knife respectively.
Rectangular pile pile forming machine comprises following structure: motor two upper end is fixed in support bar two lower end, and driver three upper end is fixed in motor two lower end; Support bar two bottom left end is fixed with transverse arm one, the left end bottom of transverse arm one is fixed with column one, and the lower end of column one is fixed with driver one, and support bar two bottom right-hand member is fixed with transverse arm two, the right-hand member bottom of transverse arm two is fixed with column two, and the lower end of column two is fixed with driver two; The lower end of driver one, driver two, driver three is respectively equipped with a drilling rod, and the lower end of each drilling rod is respectively equipped with a drill bit; Be respectively equipped with a driving shaft one between driver three and driver one, between driver three and driver two, a linking arm is fixed on the middle both sides of every driving shaft one respectively, and the outer end of each linking arm fixes a stirring cutter respectively.
The present invention has following feature:
The present invention can manufacture the piling wall of L shape concrete pile body and the mutual circular arc grafting of rectangle cement soil pile, for gear soil, the antiseepage of building foundation.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated:
Fig. 1 is the structural representation of L stake pile forming machine;
Fig. 2 is A-A direction view of Fig. 1;
Fig. 3 is B-B view of Fig. 1;
Fig. 4 is C-C direction view of Fig. 1;
Fig. 5 is the structural representation of rectangular pile pile forming machine;
Fig. 6 is D-D view of Fig. 5;
Fig. 7 is the cross-sectional view of L stake and the grafting of rectangular pile circular arc.
In figure: 1, support bar one, 2, crossbeam one, 3, vertical rod one, 4, vertical rod two, 5, vertical rod three, 6, motor one, 7, transmission case one, 8, transmission case two, 9, transmission case three, 10, torsion shaft one, 11, stir arm one, 12, drilling rod, 13, drill bit, 14, vertical rod four, 15, crossbeam two, 16, transmission case four, 17, link arm, 18, torsion shaft three, 19, recessed dise knife, 20, stir arm two, 21, torsion shaft two; 31, support bar two, 32, motor two, 33, driver three, 34, driver one, 35, driver two, 36, transverse arm one, 37, transverse arm two, 38, driving shaft one, 39, stir cutter, 40, column one, 41, column two, 46, linking arm.
Detailed description of the invention
Accompanying drawing is a kind of specific embodiment of the present invention, and this embodiment comprises L stake pile forming machine and rectangular pile pile forming machine.
L stake pile forming machine comprises the structure in Fig. 1, Fig. 2, Fig. 3, Fig. 4, concrete structure is as follows: the left end rear portion of crossbeam 1 is fixed in the front end of crossbeam 2 15, form a L-type component thus, the center of gravity position of L-type component is fixed in the lower end of support bar 1, the left end bottom of crossbeam one is fixed with vertical rod 1, the lower end of vertical rod one is fixed with motor 1, the lower end of motor one is fixed with transmission case 1, the middle lower portion of crossbeam one is fixed with vertical rod 24, the lower end of vertical rod two is fixed with transmission case 28, the right-hand member bottom of crossbeam one is fixed with vertical rod 35, the lower end of vertical rod three is fixed with transmission case 39, the rear end lower of crossbeam two is fixed with vertical rod 4 14, the lower end of vertical rod four is fixed with transmission case 4 16, transmission case one, transmission case two, transmission case three, the lower end of transmission case four is respectively equipped with a drilling rod 12, the lower end of each drilling rod fixes a drill bit 13 respectively, a torsion shaft 1 is provided with between transmission case one and transmission case two, a torsion shaft one is provided with between transmission case two and transmission case three, a torsion shaft two is provided with between transmission case one and transmission case four, a link arm 17 is fixed on the middle both sides of each torsion shaft one respectively, and the outer end of this each link arm is fixed one respectively and stirred arm 1, a link arm 17 is fixed on the middle both sides of torsion shaft two respectively, and the outer end of this each link arm is fixed one respectively and stirred arm two, the left front of transmission case one and left back export a torsion shaft 3 18 respectively, the left end of each torsion shaft three fixes a recessed dise knife 19 respectively, the right front of transmission case three and right back export a torsion shaft three respectively, and the right-hand member of this each torsion shaft three fixes a recessed dise knife respectively.
Two in each torsion shaft one torsion shafts one of stirring arm one and being parallel to its place respectively.
Two in torsion shaft two torsion shafts two of stirring arm two and being parallel to its place respectively.
Two in each torsion shaft one equal diameters of stirring distance between arm one and drill bit.
Two in torsion shaft two equal diameters of stirring distance between arm two and drill bit.
The specific works mode of L stake pile forming machine is as follows: pile frame is also provided with and send sizing device, sizing device is sent to pour into water under high pressure respectively to each drill bit during work, motor one drives transmission case one running, the on-stream rotary actuation transmission case two by the torsion shaft one in the right of transmission case one operates, the on-stream rotary actuation transmission case four by the torsion shaft two in back of transmission case one operates, transmission case two is on-stream to be operated by the rotary actuation transmission case three of a torsion shaft one on the right of it, transmission case one, transmission case two, transmission case three, the on-stream bit driven respectively by the drilling rod of under it under it of transmission case four, each torsion shaft one drives respectively by the link arm on it and stirs arm one rotation in rotation, torsion shaft two is driven by the link arm on it and stirs arm two rotation in rotation, two torsion shafts three of left end drive two of left end recessed dise knifes to rotate respectively in rotation, and two torsion shafts three of right-hand member drive two of right-hand member recessed dise knifes to rotate respectively in rotation, the soil cutting of its underpart stirs by each drill bit in rotation, the soil cutting being less than the region of bit diameter between two drill bits on torsion shaft one both sides stirs by the arm one that stirs in each torsion shaft one in rotation, the soil cutting being less than the region of bit diameter between two drill bits on torsion shaft two both sides stirs by the arm two that stirs in torsion shaft two in rotation, the soil cutting of left end is become concave arc termination by the recessed dise knife in two torsion shafts three of left end in rotation, the soil cutting of right-hand member is become concave arc termination by the recessed dise knife in two torsion shafts three of right-hand member in rotation, the soil body cut is mixed in mud, and along with constantly adding of water, mud flows out from hole, and support bar one is compressed into process and formed about one two ends respectively with the L shape hole of concave arc termination downwards.
Rectangular pile pile forming machine comprises the structure in Fig. 5, Fig. 6; Concrete structure is as follows: motor 2 32 upper end is fixed in support bar 2 31 lower end, and driver 3 33 upper end is fixed in motor two lower end; Support bar two bottom left end is fixed with transverse arm 1, the left end bottom of transverse arm one is fixed with column 1, the lower end of column one is fixed with driver 1, support bar two bottom right-hand member is fixed with transverse arm 2 37, the right-hand member bottom of transverse arm two is fixed with column 2 41, and the lower end of column two is fixed with driver 2 35; The lower end of driver one, driver two, driver three is respectively equipped with a drilling rod 12, and the lower end of each drilling rod is respectively equipped with a drill bit 13; Be respectively equipped with a driving shaft 1 between driver three and driver one, between driver three and driver two, a linking arm 46 is fixed on the middle both sides of every driving shaft one respectively, and the outer end of each linking arm fixes a stirring cutter 39 respectively.
The specific works mode of rectangular pile pile forming machine is as follows: rectangular pile pile forming machine is also provided with high-pressure pump, during work, high-pressure pump injects cement paste respectively to each drill bit, motor two drives driver three running, and driver three is operated by the rotating drive driver one of driving shaft one, driver two in operation process; Driver one, driver two, driver three drive drill bit rotational respectively by the drilling rod of its lower end, and the earth of its lower end and cement paste stir by three drill bits in rotation; Two driving shafts one drive two linking arms on each driving shaft one to drive respectively and stir cutter around driving shaft one rotation, stir cutter and the part earth and cement paste that are less than bit diameter between every two drill bits are stirred in rotation process in rotation; Support bar two is compressed into process and is formed about one two ends respectively with the cement-soil rectangle grafting stake of dome arc termination downwards.
The concave arc termination at L shape grafting stake two ends and the dome arc termination at rectangle grafting stake two ends coincide.
L stake pile forming machine and rectangular pile pile forming machine associated working process as follows: first in the original position needing pile axis, a L shape hole is manufactured according to the working method of above-mentioned L stake pile forming machine with L stake pile forming machine, concreting, formation concrete L shape grafting stake in this L shape hole, on the right side of this concrete L shape grafting stake, the distance of the rectangle grafting stake in interval manufactures second concrete L shape grafting stake again, so manufacture one, multiple interval rectangle grafting pilespacing from multiple concrete L shape grafting stakes, when the concrete of the L shape grafting stake on both sides reaches some strength, in spacing again between every two concrete L shape grafting stakes, a cement-soil rectangle grafting stake is manufactured according to the working method of above-mentioned rectangular pile pile forming machine with rectangular pile pile forming machine, the dome arc termination of the cement-soil rectangle grafting stake left end between every two concrete L shape grafting stakes is made to be fit to the concave arc termination of left side concrete L shape grafting stake right-hand member, the dome arc termination of cement-soil rectangle grafting stake right-hand member is fit to the concave arc termination of the right concrete L shape grafting stake left end, the cement-soil pile of the mutual circular arc grafting of cement-soil rectangle grafting stake between formation like this multiple concrete L shape grafting stake and every two concrete L shape grafting stakes, for the gear soil of building foundation, antiseep.
Claims (1)
1. L stake and a rectangular pile circular arc docking device, comprise L stake pile forming machine and rectangular pile pile forming machine;
It is characterized in that: the concrete structure of L stake pile forming machine is as follows: the left end rear portion of crossbeam 1 is fixed in the front end of crossbeam 2 15, form a L-type component thus, the center of gravity position of L-type component is fixed in the lower end of support bar 1, the left end bottom of crossbeam one is fixed with vertical rod 1, the lower end of vertical rod one is fixed with motor 1, the lower end of motor one is fixed with transmission case 1, the middle lower portion of crossbeam one is fixed with vertical rod 24, the lower end of vertical rod two is fixed with transmission case 28, the right-hand member bottom of crossbeam one is fixed with vertical rod 35, the lower end of vertical rod three is fixed with transmission case 39, the rear end lower of crossbeam two is fixed with vertical rod 4 14, the lower end of vertical rod four is fixed with transmission case 4 16, transmission case one, transmission case two, transmission case three, the lower end of transmission case four is respectively equipped with a drilling rod 12, the lower end of each drilling rod fixes a drill bit 13 respectively, a torsion shaft 1 is provided with between transmission case one and transmission case two, a torsion shaft one is provided with between transmission case two and transmission case three, a torsion shaft two is provided with between transmission case one and transmission case four, a link arm 17 is fixed on the middle both sides of each torsion shaft one respectively, and the outer end of this each link arm is fixed one respectively and stirred arm 1, a link arm 17 is fixed on the middle both sides of torsion shaft two respectively, and the outer end of this each link arm is fixed one respectively and stirred arm two, the left front of transmission case one and left back export a torsion shaft 3 18 respectively, the left end of each torsion shaft three fixes a recessed dise knife 19 respectively, the right front of transmission case three and right back export a torsion shaft three respectively, and the right-hand member of this each torsion shaft three fixes a recessed dise knife respectively,
Sizing device is sent to pour into water under high pressure respectively to each drill bit during the work of L stake pile forming machine, motor one drives transmission case one running, the on-stream rotary actuation transmission case two by the torsion shaft one in the right of transmission case one operates, the on-stream rotary actuation transmission case four by the torsion shaft two in back of transmission case one operates, transmission case two is on-stream to be operated by the rotary actuation transmission case three of a torsion shaft one on the right of it, the on-stream bit driven respectively by the drilling rod of under it under it of transmission case one, transmission case two, transmission case three, transmission case four, each torsion shaft one drives respectively by the link arm on it and stirs arm one rotation in rotation, torsion shaft two is driven by the link arm on it and stirs arm two rotation in rotation, two torsion shafts three of left end drive two of left end recessed dise knifes to rotate respectively in rotation, and two torsion shafts three of right-hand member drive two of right-hand member recessed dise knifes to rotate respectively in rotation, the soil cutting of its underpart stirs by each drill bit in rotation, the soil cutting being less than the region of bit diameter between two drill bits on torsion shaft one both sides stirs by the arm one that stirs in each torsion shaft one in rotation, the soil cutting being less than the region of bit diameter between two drill bits on torsion shaft two both sides stirs by the arm two that stirs in torsion shaft two in rotation, the soil cutting of left end is become concave arc termination by the recessed dise knife in two torsion shafts three of left end in rotation, the soil cutting of right-hand member is become concave arc termination by the recessed dise knife in two torsion shafts three of right-hand member in rotation, the soil body cut is mixed in mud, and along with constantly adding of water, mud flows out from hole, and support bar one is compressed into process and formed about one two ends respectively with the L shape hole of concave arc termination downwards,
The concrete structure of rectangular pile pile forming machine comprises: motor 2 32 upper end is fixed in support bar 2 31 lower end, and driver 3 33 upper end is fixed in motor two lower end; Support bar two bottom left end is fixed with transverse arm 1, the left end bottom of transverse arm one is fixed with column 1, the lower end of column one is fixed with driver 1, support bar two bottom right-hand member is fixed with transverse arm 2 37, the right-hand member bottom of transverse arm two is fixed with column 2 41, and the lower end of column two is fixed with driver 2 35; The lower end of driver one, driver two, driver three is respectively equipped with a drilling rod 12, and the lower end of each drilling rod is respectively equipped with a drill bit 13; Be respectively equipped with a driving shaft 1 between driver three and driver one, between driver three and driver two, a linking arm 46 is fixed on the middle both sides of every driving shaft one respectively, and the outer end of each linking arm fixes a stirring cutter 39 respectively;
During the work of rectangular pile pile forming machine, high-pressure pump injects cement paste respectively to each drill bit, and motor two drives driver three running, and driver three is operated by the rotating drive driver one of driving shaft one, driver two in operation process; Driver one, driver two, driver three drive drill bit rotational respectively by the drilling rod of its lower end, and the earth of its lower end and cement paste stir by three drill bits in rotation; Two driving shafts one drive two linking arms on each driving shaft one to drive respectively and stir cutter around driving shaft one rotation, stir cutter and the part earth and cement paste that are less than bit diameter between every two drill bits are stirred in rotation process in rotation; Support bar two is compressed into process and is formed about one two ends respectively with the cement-soil rectangle grafting stake of dome arc termination downwards;
L stake pile forming machine and rectangular pile pile forming machine associated working process: first in the original position needing pile axis, a L shape hole is manufactured according to the working method of above-mentioned L stake pile forming machine with L stake pile forming machine, concreting, formation concrete L shape grafting stake in this L shape hole, on the right side of this concrete L shape grafting stake, the distance of the rectangle grafting stake in interval manufactures second concrete L shape grafting stake again, so manufacture one, multiple interval rectangle grafting pilespacing from multiple concrete L shape grafting stakes, when the concrete of the L shape grafting stake on both sides reaches some strength, in spacing again between every two concrete L shape grafting stakes, a cement-soil rectangle grafting stake is manufactured according to the working method of above-mentioned rectangular pile pile forming machine with rectangular pile pile forming machine, the dome arc termination of the cement-soil rectangle grafting stake left end between every two concrete L shape grafting stakes is made to be fit to the concave arc termination of left side concrete L shape grafting stake right-hand member, the dome arc termination of cement-soil rectangle grafting stake right-hand member is fit to the concave arc termination of the right concrete L shape grafting stake left end, the cement-soil pile of the mutual circular arc grafting of cement-soil rectangle grafting stake between formation like this multiple concrete L shape grafting stake and every two concrete L shape grafting stakes, for the gear soil of building foundation, antiseep.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511012365.7A CN105442553A (en) | 2015-12-31 | 2015-12-31 | Circular-arc splicing equipment for L-shaped piles and rectangular piles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511012365.7A CN105442553A (en) | 2015-12-31 | 2015-12-31 | Circular-arc splicing equipment for L-shaped piles and rectangular piles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105442553A true CN105442553A (en) | 2016-03-30 |
Family
ID=55553148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511012365.7A Pending CN105442553A (en) | 2015-12-31 | 2015-12-31 | Circular-arc splicing equipment for L-shaped piles and rectangular piles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105442553A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106149692A (en) * | 2016-07-13 | 2016-11-23 | 于洋 | Plug together Y type rig |
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| CN105586877A (en) * | 2015-12-31 | 2016-05-18 | 宋姝娴 | Arc inserting and connecting device for L-shaped piles and rectangular piles |
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2015
- 2015-12-31 CN CN201511012365.7A patent/CN105442553A/en active Pending
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| CN203034511U (en) * | 2012-12-30 | 2013-07-03 | 张璐 | Wall brusher of double-helix grooving machine |
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Application publication date: 20160330 |
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