CN105569031A - Square pile and pi-shaped pile locking device - Google Patents
Square pile and pi-shaped pile locking device Download PDFInfo
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- CN105569031A CN105569031A CN201610107003.4A CN201610107003A CN105569031A CN 105569031 A CN105569031 A CN 105569031A CN 201610107003 A CN201610107003 A CN 201610107003A CN 105569031 A CN105569031 A CN 105569031A
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- gearbox
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- power transmission
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- 239000002689 soil Substances 0.000 claims abstract description 43
- 239000004568 cement Substances 0.000 claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 claims description 68
- 238000000034 method Methods 0.000 claims description 19
- 238000003756 stirring Methods 0.000 claims description 12
- 238000005553 drilling Methods 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 230000001360 synchronised effect Effects 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000011440 grout Substances 0.000 claims description 2
- 238000003786 synthesis reaction Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 1
Classifications
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- 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
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- 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
- E02D2200/1628—Shapes rectangular
-
- 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
- E02D2200/165—Shapes polygonal
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
A square pile and pi-shaped pile locking device comprises a pi-shaped pile forming machine and a square pile forming machine and is used for manufacturing a plurality of pi-shaped cement piles, wherein a square gap is formed between every two adjacent pi-shaped piles. When the cement strength of the pi-shaped piles on two sides reaches a certain level, a square concrete pile is manufactured in the square gap between every two adjacent pi-shaped piles through the square pile forming machine according to the working mode of the square pile forming machine, so that the convex rectangle at the left end of the square concrete pile between every two adjacent pi-shaped cement piles is matched with the concave rectangle at the right end of the pi-shaped pile on the left side, and the convex rectangle at the right end of each square concrete pile is matched with the concave rectangle at the left end of the corresponding pi-shaped cement pile on the right side. In this way, a piling wall is formed, wherein the multiple pi-shaped cement piles and the square concrete piles between every two adjacent pi-shaped piles are locked to each other, and the piling wall is used for soil retaining and anti-seepage of a building foundation.
Description
Technical field
The present invention relates to a kind of lock catch device, the square stake particularly used in a kind of Foundation Design and π stake lock catch device.
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 piling wall of cement-soil π stake and the mutual fore shaft of concrete squares stake.
Summary of the invention
The present invention compensate for above shortcoming, provides a kind of square stake and the π stake lock catch device that can manufacture cement-soil π stake and the mutual fore shaft of concrete squares stake.
The present invention is achieved through the following technical solutions:
A kind of square stake and π stake lock catch device, comprise π stake pile forming machine and square stake pile forming machine.
π stake pile forming machine comprises following structure: the left part back of transverse arm one is fixed with transverse arm two, the right part back of transverse arm one is fixed with transverse arm three, thus transverse arm one, transverse arm two, transverse arm three form a π shape framework, the front end of transverse arm two is fixed in the lower end of pressure rod one, and the front end of transverse arm three is fixed in the lower end of pressure rod two, the middle lower portion of transverse arm one is fixed with column one, the lower end of column one is fixed with motor one, the lower end of motor one is fixed with gearbox one, in the middle of the left part of transverse arm one, lower end is fixed with column two, the lower end of column two is fixed with gearbox two, the left end bottom of transverse arm one is fixed with column four, the lower end of column four is fixed with gearbox four, in the middle of the right part of transverse arm one, lower end is fixed with column three, the lower end of column three is fixed with gearbox three, the right-hand member bottom of transverse arm one is fixed with column five, the lower end of column five is fixed with gearbox five, the rear end lower of transverse arm two is fixed with column six, the lower end of column six is fixed with gearbox six, the rear end lower of transverse arm three is fixed with column seven, the lower end of column seven is fixed with gearbox seven, the lower end of gearbox one, gearbox two, gearbox three, gearbox four, gearbox five, gearbox six, gearbox seven is respectively equipped with a drilling rod, and the lower end of each drilling rod is respectively equipped with a drill bit one, a power transmission shaft one is respectively equipped with between gearbox one and gearbox two, between gearbox one and gearbox three, between gearbox two and gearbox four, between gearbox three and gearbox five, between gearbox two and gearbox six, between gearbox three and gearbox seven, a link arm is fixed on the middle both sides of each power transmission shaft one respectively, and the outer end of each link arm is fixed one respectively and stirred cutter one, the right back of gearbox five and right front export a power transmission shaft two respectively, and each power transmission shaft two right-hand member fixes a rectangle cutter respectively, the left back of gearbox four and left front export a power transmission shaft two respectively, and this each power transmission shaft two left end fixes a rectangle cutter respectively.
Square stake pile forming machine comprises following structure: the upper end of the lower end fixed motor two of pressure rod three, and motor two lower end is provided with transmission case, and the output shaft of transmission case lower end is fixed with drill bit two; Transmission case to left back, left front, right back, right front export a turning cylinder respectively, the outer end of each turning cylinder fixes a triangular knife respectively.
The present invention has following feature:
The present invention can manufacture the piling wall of cement-soil π stake and the mutual fore shaft of concrete squares stake, 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 π 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 square stake pile forming machine;
Fig. 6 is D-D view of Fig. 5;
Fig. 7 is the cross-sectional view of π stake and square stake fore shaft.
In figure: 1, pressure rod one, 2, pressure rod two, 3, gearbox one, 4, gearbox two, 5, gearbox three, 6, gearbox four, 7, gearbox five, 8, power transmission shaft one, 9, stir cutter one, 10, column one, 11, motor one, 12, drilling rod, 13, drill bit one, 14, power transmission shaft two, 15, rectangle cutter, 16, transverse arm one, 17, column two, 18, column three, 19, column four, 20, column five, 21, transverse arm two, 22, transverse arm three, 23, column six, 24, column seven, 25, gearbox six, 26, gearbox seven, 27, link arm; 31, pressure rod three, 32, motor two, 33, transmission case, 34, drill bit two, 35, turning cylinder, 36, triangular knife.
Detailed description of the invention
Accompanying drawing is a kind of specific embodiment of the present invention, and this embodiment comprises π stake pile forming machine and square stake pile forming machine.
π stake pile forming machine comprises the structure in Fig. 1, Fig. 2, Fig. 3, Fig. 4, concrete structure is as follows: the left part back of transverse arm 1 is fixed with transverse arm 2 21, the right part back of transverse arm one is fixed with transverse arm 3 22, thus transverse arm one, transverse arm two, transverse arm three form a π shape framework, the front end of transverse arm two is fixed in the lower end of pressure rod 1, and the front end of transverse arm three is fixed in the lower end of pressure rod 22, the middle lower portion of transverse arm one is fixed with column 1, the lower end of column one is fixed with motor 1, the lower end of motor one is fixed with gearbox 1, in the middle of the left part of transverse arm one, lower end is fixed with column 2 17, the lower end of column two is fixed with gearbox 24, the left end bottom of transverse arm one is fixed with column 4 19, the lower end of column four is fixed with gearbox 46, in the middle of the right part of transverse arm one, lower end is fixed with column 3 18, the lower end of column three is fixed with gearbox 35, the right-hand member bottom of transverse arm one is fixed with column 5 20, the lower end of column five is fixed with gearbox 57, the rear end lower of transverse arm two is fixed with column 6 23, the lower end of column six is fixed with gearbox 6 25, the rear end lower of transverse arm three is fixed with column 7 24, the lower end of column seven is fixed with gearbox 7 26, the lower end of gearbox one, gearbox two, gearbox three, gearbox four, gearbox five, gearbox six, gearbox seven is respectively equipped with a drilling rod 12, and the lower end of each drilling rod is respectively equipped with a drill bit 1, a power transmission shaft 1 is respectively equipped with between gearbox one and gearbox two, between gearbox one and gearbox three, between gearbox two and gearbox four, between gearbox three and gearbox five, between gearbox two and gearbox six, between gearbox three and gearbox seven, a link arm 27 is fixed on the middle both sides of each power transmission shaft one respectively, and the outer end of each link arm is fixed one respectively and stirred cutter 1, the right back of gearbox five and right front export a power transmission shaft 2 14 respectively, and this each power transmission shaft two right-hand member fixes a rectangle cutter 15 respectively, the left back of gearbox four and left front export a power transmission shaft 2 14 respectively, and this each power transmission shaft two left end fixes a rectangle cutter 15 respectively.
The cutter one that stirs on left and right, rear three power transmission shafts one of gearbox two differs certain angle in rotation, is independent of each other mutually in rotation.
The cutter one that stirs on left and right, rear three power transmission shafts one of gearbox three differs certain angle in rotation, is independent of each other mutually in rotation.
The specific works mode of π stake pile forming machine is as follows: π stake pile forming machine is provided with grouting pump, during work, grouting pump injects cement paste respectively to each drill bit one, motor one drives gearbox one running, the on-stream rotation by two power transmission shafts one in left and right of gearbox one drives gearbox two and gearbox three running respectively, gearbox two is on-stream by left, the rotation of latter two power transmission shaft one drives gearbox four and gearbox six running respectively, gearbox three is on-stream by right, the rotation of latter two power transmission shaft one drives gearbox five and gearbox seven running respectively, gearbox five drives the relative synchronous axial system of power transmission shaft two of the power transmission shaft two of right back and right front respectively in operation process, gearbox four drives the relative synchronous axial system of power transmission shaft two of the power transmission shaft two of left back and left front respectively in operation process, gearbox one, gearbox two, gearbox three, gearbox four, gearbox five, gearbox six, gearbox seven drive drill bit one to rotate respectively by the drilling rod of its lower end, and the soil cutting of its lower end and cement paste stir by seven drill bits one in rotation, six power transmission shafts one drive two link arms on each power transmission shaft one to drive respectively and stir cutter one around power transmission shaft one rotation, stir cutter one and the unhewn soil cutting of drill bit one and cement paste between two common tangents of adjacent two cylinder cylindricals are stirred in rotation in rotation, two power transmission shafts two of right-hand member drive the rectangle swivel on the power transmission shaft two of right-hand member to move respectively in rotation, the soil cutting of the termination of right part and cement paste are stirred into recessed rectangle by the rectangle cutter of right-hand member in rotation, two power transmission shafts two of left end drive the rectangle swivel on the power transmission shaft two of left end to move respectively in rotation, and the soil cutting of the termination of left part and cement paste are stirred into recessed rectangle by the rectangle cutter of left end in rotation, pressure rod one, pressure rod two are compressed into process and are formed about one two ends respectively with the cement-soil π stake of recessed rectangle downwards.
Square stake pile forming machine comprises the structure in Fig. 5, Fig. 6; Concrete structure is as follows: the upper end of the lower end fixed motor 2 32 of pressure rod 3 31, and motor two lower end is provided with transmission case 33, and the output shaft of transmission case lower end is fixed with drill bit 2 34; Transmission case to left back, left front, right back, right front export a turning cylinder 35 respectively, the outer end of each turning cylinder fixes a triangular knife 36 respectively.
The specific works mode of square stake pile forming machine is as follows: during work, grout pump pours into water under high pressure to drill bit two, motor two drives transmission case to operate, transmission case drives drill bit two rotation in operation process, drill bit two in rotary course by the soil cutting of drill bit lower end; Transmission case drive respectively in operation process left back, left front, right back, right front turning cylinder drive triangular knife to rotate respectively, four triangular knifes in rotary course by the soil cutting at four angles; The soil body machined away is mixed in mud, and water under high pressure constantly injects, and mud constantly flows out from hole, and pressure rod three forms square hole in the process of compressing into, concreting, the stake of formation concrete squares in this square hole.
After two π stake left and right are involutory, to the recessed rectangle of joint close the right and left to synthesis square.
π stake pile forming machine and square stake pile forming machine associated working process as follows: needing the original position of pile axis, cement-soil π stake is manufactured according to the working method of above-mentioned π stake pile forming machine with π stake pile forming machine, second cement-soil π stake is manufactured on the right side of this π stake, make the recessed rectangle of second cement-soil π stake left end involutory in the recessed rectangle of first cement-soil π stake right-hand member, so manufacture the multiple cement-soil π stake accompanying a square gap between every two adjacent π stakes, when the soil cement intensity of the π stake on both sides reaches a timing, in square gap again between every two π stakes, a concrete squares stake is manufactured according to the working method of above-mentioned square stake pile forming machine with square stake pile forming machine, the convex rectangle of the concrete squares stake left end between every two cement-soil π stake is made to be fit to the recessed rectangle of left side π stake right-hand member, the convex rectangle of concrete squares stake right-hand member is fit to the recessed rectangle of the right cement-soil π stake left end, the piling wall of the mutual fore shaft of concrete squares stake between the π stake of formation like this multiple cement-soil and every two π stakes, for the gear soil of building foundation, antiseep.
Claims (4)
1. square stake and a π stake lock catch device, comprises π stake pile forming machine and square stake pile forming machine, it is characterized in that:
The concrete structure of π stake pile forming machine comprises: the left part back of transverse arm one (16) is fixed with transverse arm two (21), the right part back of transverse arm one is fixed with transverse arm three (22), thus transverse arm one, transverse arm two, transverse arm three form a π shape framework, the front end of transverse arm two is fixed in the lower end of pressure rod one (1), and the front end of transverse arm three is fixed in the lower end of pressure rod two (2), the middle lower portion of transverse arm one is fixed with column one (10), the lower end of column one is fixed with motor one (11), the lower end of motor one is fixed with gearbox one (3), in the middle of the left part of transverse arm one, lower end is fixed with column two (17), the lower end of column two is fixed with gearbox two (4), the left end bottom of transverse arm one is fixed with column four (19), the lower end of column four is fixed with gearbox four (6), in the middle of the right part of transverse arm one, lower end is fixed with column three (18), the lower end of column three is fixed with gearbox three (5), the right-hand member bottom of transverse arm one is fixed with column five (20), the lower end of column five is fixed with gearbox five (7), the rear end lower of transverse arm two is fixed with column six (23), the lower end of column six is fixed with gearbox six (25), the rear end lower of transverse arm three is fixed with column seven (24), the lower end of column seven is fixed with gearbox seven (26), the lower end of gearbox one, gearbox two, gearbox three, gearbox four, gearbox five, gearbox six, gearbox seven is respectively equipped with a drilling rod (12), and the lower end of each drilling rod is respectively equipped with a drill bit one (13), a power transmission shaft one (8) is respectively equipped with between gearbox one and gearbox two, between gearbox one and gearbox three, between gearbox two and gearbox four, between gearbox three and gearbox five, between gearbox two and gearbox six, between gearbox three and gearbox seven, a link arm (27) is fixed on the middle both sides of each power transmission shaft one respectively, and the outer end of each link arm is fixed one respectively and stirred cutter one (9), the right back of gearbox five and right front export a power transmission shaft two (14) respectively, and this each power transmission shaft two right-hand member fixes a rectangle cutter (15) respectively, the left back of gearbox four and left front export a power transmission shaft two (14) respectively, and this each power transmission shaft two left end fixes a rectangle cutter (15) respectively,
The specific works mode of π stake pile forming machine: during the work of π stake pile forming machine, grouting pump injects cement paste respectively to each drill bit one, motor one drives gearbox one running, the on-stream rotation by two power transmission shafts one in left and right of gearbox one drives gearbox two and gearbox three running respectively, gearbox two is on-stream by left, the rotation of latter two power transmission shaft one drives gearbox four and gearbox six running respectively, gearbox three is on-stream by right, the rotation of latter two power transmission shaft one drives gearbox five and gearbox seven running respectively, gearbox five drives the relative synchronous axial system of power transmission shaft two of the power transmission shaft two of right back and right front respectively in operation process, gearbox four drives the relative synchronous axial system of power transmission shaft two of the power transmission shaft two of left back and left front respectively in operation process, gearbox one, gearbox two, gearbox three, gearbox four, gearbox five, gearbox six, gearbox seven drive drill bit one to rotate respectively by the drilling rod of its lower end, and the soil cutting of its lower end and cement paste stir by seven drill bits one in rotation, six power transmission shafts one drive two link arms on each power transmission shaft one to drive respectively and stir cutter one around power transmission shaft one rotation, stir cutter one and the unhewn soil cutting of drill bit one and cement paste between two common tangents of adjacent two cylinder cylindricals are stirred in rotation in rotation, two power transmission shafts two of right-hand member drive the rectangle swivel on the power transmission shaft two of right-hand member to move respectively in rotation, the soil cutting of the termination of right part and cement paste are stirred into recessed rectangle by the rectangle cutter of right-hand member in rotation, two power transmission shafts two of left end drive the rectangle swivel on the power transmission shaft two of left end to move respectively in rotation, and the soil cutting of the termination of left part and cement paste are stirred into recessed rectangle by the rectangle cutter of left end in rotation, pressure rod one, pressure rod two are compressed into process and are formed about one two ends respectively with the cement-soil π stake of recessed rectangle downwards,
The concrete structure of square stake pile forming machine comprises: the upper end of the lower end fixed motor 2 32 of pressure rod 3 31, and motor two lower end is provided with transmission case 33, and the output shaft of transmission case lower end is fixed with drill bit 2 34; Transmission case to left back, left front, right back, right front export a turning cylinder 35 respectively, the outer end of each turning cylinder fixes a triangular knife 36 respectively;
The specific works mode of square stake pile forming machine: during work, grout pump pours into water under high pressure to drill bit two, and motor two drives transmission case to operate, and transmission case drives drill bit two rotation in operation process, drill bit two in rotary course by the soil cutting of drill bit lower end; Transmission case drive respectively in operation process left back, left front, right back, right front turning cylinder drive triangular knife to rotate respectively, four triangular knifes in rotary course by the soil cutting at four angles; The soil body machined away is mixed in mud, and water under high pressure constantly injects, and mud constantly flows out from hole, and pressure rod three forms square hole in the process of compressing into, concreting, the stake of formation concrete squares in this square hole;
π stake pile forming machine and square stake pile forming machine associated working process: needing the original position of pile axis, cement-soil π stake is manufactured according to the working method of above-mentioned π stake pile forming machine with π stake pile forming machine, second cement-soil π stake is manufactured on the right side of this π stake, make the recessed rectangle of second cement-soil π stake left end involutory in the recessed rectangle of first cement-soil π stake right-hand member, so manufacture the multiple cement-soil π stake accompanying a square gap between every two adjacent π stakes, when the soil cement intensity of the π stake on both sides reaches a timing, in square gap again between every two π stakes, a concrete squares stake is manufactured according to the working method of above-mentioned square stake pile forming machine with square stake pile forming machine, the convex rectangle of the concrete squares stake left end between every two cement-soil π stake is made to be fit to the recessed rectangle of left side π stake right-hand member, the convex rectangle of concrete squares stake right-hand member is fit to the recessed rectangle of the right cement-soil π stake left end, the piling wall of the mutual fore shaft of concrete squares stake between the π stake of formation like this multiple cement-soil and every two π stakes, for the gear soil of building foundation, antiseep.
2. square stake according to claim 1 and π stake lock catch device, is characterized in that: the cutter one that stirs on left and right, rear three power transmission shafts one of gearbox two of π stake pile forming machine differs certain angle in rotation, is independent of each other mutually in rotation.
3. square stake according to claim 1 and π stake lock catch device, is characterized in that: the cutter one that stirs on left and right, rear three power transmission shafts one of gearbox three of π stake pile forming machine differs certain angle in rotation, is independent of each other mutually in rotation.
4. square stake according to claim 1 and π stake lock catch device, is characterized in that: after two π stake left and right are involutory, to the recessed rectangle of joint close the right and left to synthesis square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610107003.4A CN105569031A (en) | 2016-02-28 | 2016-02-28 | Square pile and pi-shaped pile locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610107003.4A CN105569031A (en) | 2016-02-28 | 2016-02-28 | Square pile and pi-shaped pile locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105569031A true CN105569031A (en) | 2016-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610107003.4A Withdrawn CN105569031A (en) | 2016-02-28 | 2016-02-28 | Square pile and pi-shaped pile locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105569031A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105649068A (en) * | 2016-02-28 | 2016-06-08 | 宗琪 | Square pile and pi-shaped pile locking device |
| CN105696567A (en) * | 2016-02-28 | 2016-06-22 | 宗琪 | Inserting-connecting device for square piles and pi-shaped piles |
-
2016
- 2016-02-28 CN CN201610107003.4A patent/CN105569031A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105649068A (en) * | 2016-02-28 | 2016-06-08 | 宗琪 | Square pile and pi-shaped pile locking device |
| CN105696567A (en) * | 2016-02-28 | 2016-06-22 | 宗琪 | Inserting-connecting device for square piles and pi-shaped piles |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20160511 |
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| WW01 | Invention patent application withdrawn after publication |