CN101910521A - Improved screw pile - Google Patents
Improved screw pile Download PDFInfo
- Publication number
- CN101910521A CN101910521A CN2008801237356A CN200880123735A CN101910521A CN 101910521 A CN101910521 A CN 101910521A CN 2008801237356 A CN2008801237356 A CN 2008801237356A CN 200880123735 A CN200880123735 A CN 200880123735A CN 101910521 A CN101910521 A CN 101910521A
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- Prior art keywords
- blade
- screw pile
- leading edge
- axle
- sweepback
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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
- E02D5/56—Screw piles
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The present invention relates to a screw pile comprising a shaft and at least two blades extending outwardly from the shaft. Each blade has a leading edge that contacts earth as the screw pile is screwed into the ground. The leading edge includes a swept back portion adapted to deflect rocks that come into contact with the swept back portion of the leading edge during insertion of the screw pile into the ground. In one embodiment, the leading edge of each blade includes two or more straight edge portions extending at different angles to each other. The straight edge portions may include an inner edge portion extending from the shaft and the swept back portion extending at an angle from the inner edge portion.
Description
Technical field
The present invention relates to a kind of improved screw pile.
Background technology
Screw pile is used for the structure of building and other structure.Typical screw pile comprises axle, and this axle is made by mild steel or more high-intensity steel usually.Conveyor screw or screw blade are installed on the axle.Underground for screw pile is inserted, this screw pile is rotated and pushes downwards, and this makes screw blade nip underground and be screwed into underground.In case screw pile is properly inserted underground, will be distributed to the soil that is arranged in below this screw blade from screw blade by the weight of screw pile carrying.And the soil that is positioned at above the screw blade helps to resist any rising power that is applied on the screw pile, thereby helps screw pile is remained on underground.
Common screw pile comprises single screw blade.This blade has leading edge, and when screw pile is screwed into when underground, this leading edge passes the soil and this soil is broken.Common screw pile has the leading edge on their blade, and this leading edge is approximately perpendicular to the periphery (when viewed from above) of blade and extends.When axle was common cylindrical shape, the leading edge of blade can be thought and radially stretches out outside axially.
In this manual, term " comprises " and its grammer synonym will be understood that to have the meaning that comprises, unless explanation in addition in the context.
Any prior art that the applicant does not admit to damage manual forms the part of Australia or other local common practise.
Summary of the invention
The purpose of this invention is to provide a kind of interchangeable screw pile.
In first aspect, the invention provides a kind of screw pile, this screw pile comprises axle, at least two blades stretch out outside this is axial, each blade has leading edge, when screw pile is screwed into when underground, this leading edge contact earth, each leading edge when seeing, comprise from above along and the periphery off plumb direction of the axle at least a portion of extending.
In second aspect, the invention provides a kind of screw pile, this screw pile comprises axle, at least two blades stretch out outside this is axial, each blade has leading edge, when screw pile is screwed into when underground, and this leading edge contact earth, each leading edge comprises the sweepback part, and this sweepback partly is used for inserting the feasible rock deflection that partly contacts with the sweepback of leading edge of underground process at screw pile.
In the third aspect, the invention provides a kind of screw pile, this screw pile comprises axle, and at least two blades are from this axially outer stretching out, and each blade has leading edge, and when screw pile is screwed into when underground, this leading edge contacts earth, and each leading edge shrinks towards axle.
Screw pile of the present invention can comprise two blades of hang plate form.Hang plate can be installed on the axle.Hang plate can be installed on the axle by for example welding.Selectively, hang plate can form one with axle.Hang plate can be the hang plate of general flat.This hang plate can have gradient respect to one another.For example, when when sidepiece is seen, a hang plate can extend downwards from left to right, and another hang plate can extend downwards from right to left.
In another embodiment, two blades become the form of screw blade.
In certain embodiments, blade is positioned on the opposite side of axle.Be cylindricality because be used for most of axle of screw pile, so blade can be positioned on the radially opposite side of axle.
The edge, lower side of blade or hang plate is positioned properly the lower side part that becomes to be higher than axle.In this form, axle extends to and is lower than blade, contacts with the soil in the lower end of blade with before the soil contacts.The lower end of axle can be equipped with or be formed with drill hammer suitably.When screw pile is screwed into when underground, drill hammer engages with the soil, and this is used for being screwed at screw pile makes this screw pile stable when underground.Drill hammer can be two on the lower end that is formed at axle radially most advanced and sophisticated relatively forms.
In certain embodiments, the leading edge of blade can comprise the part (when seeing from above) with the angled extension of vertical line that goes out from shaft extension.
The leading edge of blade can comprise two or more separated portions, and these parts are extended with the angle that differs from one another.For example, leading edge can have inside part, this inside part adjacent shafts, and along extending with the direction of this approximate vertical.Second portion can stretch out from first, and the angled extension of this second portion and first.Ideally, second portion is the sweepback part.Leading edge can also comprise other parts.For example, leading edge can comprise third part, and the angled extension of this third part and second portion in certain embodiments, even also comprises the 4th part, the angled extension of the 4th part and third part.Ideally, third part is from the second portion sweepback, and the 4th part is from the third part sweepback.In this embodiment, a plurality of parts of leading edge can be roughly straight marginal portion.
In other embodiments, leading edge can be from being arranged to the level and smooth sweepback of inside part of adjacent shafts.In this embodiment, leading edge can be the form of crooked leading edge, its sweepback gradually when leaving the axle extension.
The leading edge of the blade of screw pile of the present invention has at least a portion, and this at least a portion is inserted in the underground process direction of rotation sweepback along blade at screw pile.Help to make along this at least a portion of the direction of rotation sweepback of blade and insert any rock deflection that may run in the underground process at screw pile.Like this, inserting the impact load that acts in the underground process on the blade leading edge at blade reduces.
In certain embodiments, the rear portion of blade can comprise the part of square roughly or rectangle.
In certain embodiments, the back edge of blade can comprise the part (when viewed from above) of extending angularly with the vertical line that goes out from shaft extension.Back edge can comprise first and with the second portion of this angled extension of first.Selectively, back edge can be towards the level and smooth sweepback of axle.In these embodiments, back edge is also towards the axle sweepback.This also inserts at screw pile and helps rock or other hard material to leave the back edge deflection of blade in the underground process.And the back edge of sweepback is formed on " the widening opening " between the blade, thereby reduction rock or other hard material are stuck in the trend between the blade.
In certain embodiments, back edge can with the shape mirror image of leading edge.
Screw pile of the present invention with two blades also inserts in the underground stage at screw pile bigger stability is provided.In this respect, when screw pile is screwed into when underground, each blade engages with the soil.Therefore, will cancel each other out owing to engage the power that is applied on each blade with the soil, power more is uniformly distributed on the screw pile thereby cause during insertion.
In screw pile of the present invention, use two blades that another advantage is provided.Should be known in when screw pile to be screwed into when underground, when the blade of screw pile rotates through earth, will upset this earth.In case screw pile arrives its fitting depth, be positioned near the blade leading edge earth part will be not can multilated because blade does not pass this earth part.Those skilled in the art readily appreciate that undisturbed earth is compared with the earth of having upset has bigger load-carrying ability usually.When undisturbed earth part is arranged near the leading edge at two blades of screw pile of the present invention, to compare with the load-carrying ability of common screw pile with single screw blade, the load-carrying ability of the screw pile of the present invention of installation will improve.
Another advantage is to be installed in when underground when screw pile, earth be positioned at screw pile of the present invention two blades above.Therefore, compare with the common screw pile with single screw blade, the ability of resisting the lifting force on the screw pile that is applied to installation will improve.
Comprise that at the rear portion of blade the performance of screw pile under compression and pulled out condition can further improve among the embodiment of square roughly or rectangle part.
In the embodiment that blade is made by the general flat plate, the manufacturing of screw pile can be simplified greatly.For example, elliptical incision or recess can be formed in the blade, and the shape of elliptical incision or recess will be installed in the angle on the axle and follow the shape of neighboring of axle along blade.At this moment, blade can cut or punching press simply, and is welded on the axle subsequently.Compare with the common screw pile of single screw blade, this is a simple manufacturing method more, and this common screw pile generally includes and forms semicircular plate and make this plate form spirality scraper plate (flight), so that be installed on the axle subsequently.
At blade is among the embodiment of general flat plate shape, and leading edge can form required form by punching press or cutting leading edge.
The shape of blade and/or size can change according to the suggestion purposes of screw pile.For example, for being used for chiltern or fragile soil, can use the blade of broad.The blade of broad is suitable, because screw pile can be screwed into chiltern or frangible soil at an easy rate.And compression and tension load that the blade of broad helps to be applied on the screw pile are disseminated in the screw pile soil on every side.For the screw pile that will be used for the clay place, can use the blade of littler width.For the screw pile that will be used for place, rock soil, can use even the blade of littler width, so that blade penetrates earth in installation process.The blade that is used on the screw pile can have the part of further sweepback, so that improve the deflection of rock in installation process.
When screw pile be used for need bigger installing force the place time, the thickness of blade can also increase.
In certain embodiments, the leading edge of blade can tilt or fine away, and is screwed into leading edge when underground to the penetrating of earth so that improve when screw pile, and the raising blade ability that makes rock or other hard material deflection.
Description of drawings
Fig. 1 has represented the phantom drawing of the screw pile of one embodiment of the invention;
Fig. 2 has represented the plan view of the screw pile shown in Fig. 1, but has only represented a blade in order to know;
Fig. 3 is the plan view of the screw pile shown in Fig. 1;
Fig. 4 is the upward view of the screw pile shown in Fig. 1;
Fig. 5 is the phantom drawing of the screw pile of another embodiment of the present invention;
Fig. 6 has represented the plan view of the screw pile shown in Fig. 5, but has only represented a blade in order to know;
Fig. 7 is the plan view of the screw pile shown in Fig. 5;
Fig. 8 is the upward view of the screw pile shown in Fig. 5;
Fig. 9 is the phantom drawing of the screw pile of another embodiment of the present invention;
Figure 10 is the lateral view that is used for one of them blade of screw pile shown in Figure 9;
Figure 11 has represented the plan view of the screw pile shown in Fig. 9, but has only represented a blade in order to know;
Figure 12 is the plan view of the screw pile shown in Fig. 9;
Figure 13 is the upward view of the screw pile shown in Fig. 9;
Figure 14 has represented the plan view of the screw pile of further embodiment of this invention; And
Figure 15 is the view of the plate of cutting forming, and it is as the blade on the screw pile of one embodiment of the invention.
The specific embodiment
Should be known in that accompanying drawing is used to represent embodiments of the invention.Therefore, should be appreciated that the present invention can not think only is restricted to the feature shown in the accompanying drawing.
Fig. 1 to 4 has represented the different views of the screw pile of the embodiment of the invention.Screw pile shown in Fig. 1 to 4 is designed in frangible sand soil or other soil.Screw pile 10 shown in Fig. 1 to 4 comprises axle 12.Axle 12 is columnar shaft roughly, and it can be made by mild steel or more high-intensity steel.Axle 12 can be hollow shaft.Axle 12 has upper end 14 and lower end 16.Two drive lug 18,20 (see figure 3)s and are attached at axle upward also near upper end 14. Drive lug 18,20 and drive mechanism engages, so that be screwed into screw pile 10 underground.
The lower end 16 of axle comprises by most advanced and sophisticated 26,28 drill hammers that form.Be installed in the underground process at screw pile 10, drill hammer is kiss the earth before any other parts of screw pile.Drill hammer is nipped underground, and helps screw pile is remained on required installation site.
In case drill hammer penetrates into underground than short distance, the blade 22,24 of screw pile 10 will with ground engagement, and dig underground.It is underground that this makes that screw pile 10 is screwed into.Screw pile 10 continues rotation, is threaded into the required degree of depth up to screw pile.
Fig. 2 has represented the plan view of axle 12 and blade 24.Blade 24 has leading edge, and this leading edge is totally with reference number 30 expressions.The direction of rotation of blade 24 is shown in the arrow among Fig. 2.When blade 24 inserts when rotating in the underground process at screw pile 10, the part that this leading edge 30 is blades 24, contact with earth.Therefore, when screw pile is screwed into when underground, leading edge 30 engages with earth and makes earth break.Leading edge 30 comprises first 32, second portion 34 and third part 36.First 32 is positioned near the axle 12.First 32 is approximately perpendicular to the periphery of axle 12 and extends.Like this, the first 32 of the leading edge of blade 24 can think and radially stretches out from axle 12.
The second portion 34 of leading edge 30 is from first's 32 sweepback.Similarly, third part 36 is from second portion 34 sweepback.Like this, when second portion or third part screw pile 10 be screwed in the process contact rock or other landwaste or hard material the time, the angle of sweep of these parts of leading edge helps to remove or this rock of deflection or hard material, thereby makes things convenient for screw pile 10 to insert underground and make screw pile or be used to be screwed into the impaired possibility minimum of equipment of screw pile.
The first 32 of leading edge 30 can think and comprises less and stronger initial straight blade shock zone.Second portion 34 can be thought and comprises medium sweepback shock zone subsequently.The 3rd zone 36 can be thought and comprises the maximum sweepback shock zone that increases subsequently.
Also as seen from Figure 2, the rear portion 38 of blade 24 is roughly square or rectangular shape.
Another blade 22 of screw pile 10 has roughly similarly structure in its leading edge and posterior office.
Fig. 5 to 8 has represented another embodiment of screw pile 50 of the present invention.Embodiment shown in Fig. 5 to 8 is very similar to the screw pile 10 shown in Fig. 1 to 4.For convenience, same structure will use identical reference number, but add '.These structures do not need further introduction.Screw pile 50 shown in Fig. 5 to 8 mainly is designed for clay soil.
Screw pile 50 shown in Fig. 5 to 8 is that with the difference of the screw pile 10 shown in Fig. 1 to 4 width of blade is littler.Particularly, the width W of the blade 24 ' shown in Fig. 5 to 8 is less than the width W of the blade shown in Fig. 1 to 4 24.Such reason is that screw pile 10 is designed for the sand soil place.Because these soil break easily, so the additional width of blade 24 can not make that screw pile 10 is difficult to be screwed in the soil.And the additional width of blade 24 (with the respective blade 22 that also is installed on the axle 12) helps to make load extend to the frangible soil from screw pile.On the contrary, the narrower blade 24 ' shown in Fig. 5 to 8 can penetrate in the solid and hard clay soil well.Solid and hard clay soil provides good geotechnics supporting, and blade 22 ' and 24 ' is optimized to the load characteristic that provides best in these soil.Although not shown among Fig. 1 to 8, the blade on the screw pile 10 also can be thinner than the blade on the screw pile 50.
Fig. 9 to 13 has represented the different views of the screw pile 60 of another embodiment of the present invention.Screw pile 60 has that a plurality of structures are identical with the screw pile 10 shown in Fig. 1, and for convenience, these same structures will use identical reference number, but adds ".These structures do not need further introduction.
Also a difference is blade 24 " anterior part comprise first 32 ", second portion 34 ", third part 36 " and the 4th part 37.First 32 " comprises less and the strongest initial straight blade shock zone; second area 34 " provides medium sweepback shock zone subsequently, the 3rd zone 36 " the bigger sweepback shock zone that increases subsequently is provided; and the 4th zone 37 provides the back edge blade, so that help to make the final deflection of rock material.Blade 22 " has identical leading edge zone.
The embodiment of the screw pile 60 shown in Fig. 9 to 13 has minimum and the thickest blade, has additional cuts part and deflection in blade.The screw pile of this form is designed to penetrate the most difficult soil that comprises rock, landwaste and cobble.This type compared with the type shown in Fig. 1 to 8 and still less depended on the blade load capacity, carves and engage basement rock because it is designed to draw.
Figure 14 has represented the also plan view of the screw pile of an embodiment of the present invention.Screw pile 100 shown in Figure 14 has 102 and two blades of axle, is expressed as blade A and blade B in Figure 14.Blade A has leading edge 104, and this leading edge 104 comprises that first impacts marginal portion 106, the second impact marginal portion 108 and the 3rd impact marginal portion 110.Similarly, blade B has leading edge 112, and this leading edge 112 comprises that first impacts marginal portion 114, the second impact marginal portion 116 and the 3rd impact marginal portion 118.
Blade A has back edge 120, and this back edge 120 has marginal portion 122 and sweepback marginal portion 124.Near the vertical components marginal portion 114 of the leading edge 112 of back edge 120 by being positioned at blade B and being connected with axle 102, as shown in Figure 14.Blade B has back edge 130, and this back edge 130 has marginal portion 132 and sweepback marginal portion 134.Near the vertical components marginal portion 106 of the leading edge 104 of back edge 130 by being positioned at blade A and being connected with axle 102, as shown in Figure 14.The rear edge that should be known in a blade is in the vertical height place different with the leading edge of another blade.
As seen from Figure 14, the back edge of each blade becomes mirror image with the leading edge of another blade, so that be created in the opening that opens between the blade, thereby prevents that rock and landwaste are stuck between the blade.These white openings are by reference number 140 and 142 expressions.The blade edge of sweepback also helps feasible any rock or the landwaste deflection of attempting to be stuck between the blade.
Figure 15 has represented steel plate 150, and this steel plate 150 has cut into the shape of the blade on the screw pile that is suitable as the embodiment of the invention as shown in Figure 14.Plate 150 is made by 350 grades of thick steel of 8mm, although can know, plate can be made by the steel of different brackets and/or thickness, and perhaps in fact it can be made by other alloy or material.Plate 150 has lead edge portion 152,154 and 156 and back edge part 158,160 and 162.Plate has lateral edges 164.Also make half elliptic otch 166,, should be known in that plate is installed in axle upward (so needing the half elliptic otch) from the horizontal by certain angle ground so that make the periphery of axle of blade and screw pile near consistent.As shown in Figure 15, back edge is the mirror image of leading edge.
Screw pile according to the embodiment of the invention provides firm screw pile, and this screw pile has the erectility of raising.Use double blade to make that the power that is applied on the blade is even in blade is packed underground process into.And the load of being born by screw pile is evenly distributed in the ground by this double blade.In the embodiment that blade is formed by flat, blade is made at an easy rate by cutting or punching press, and blade can be connected by welding and with the axle of screw pile very simply.Some embodiment of screw pile are included in shock point or the drill hammer on the end of axle, and this also helps in installation process to keep stake to aim at and make the vibration minimum of screw pile in installation process.
The screw pile of each embodiment can provide following advantage according to the present invention:
Different with common screw pile, the double blade stake has two main impact/embedding blades, and being used for for example increases and the balance load distribution in installation process with after installing, thereby multiplication engages basal surface effectively;
The double blade of inclined flat provides the relative equilibrium that penetrates in the soil in installation process;
Each blade cuts edge penetrates 3 the progressive cutting/embedding stages that provide in the process underground;
Each blade provides the sweepback progression, so that to resistive drag force, is used for raising and penetrates;
So that when engaging, the angle of sweep increases with respect to rotation when the rotation of each blade;
Two flat blade provide foursquare " two combination " end bearing plate is used for be used for ﹠amp; Tension load;
The back edge of each blade and the leading edge mirror image of blade mutually so that produce " widening opening " between blade, thereby prevent that rock and landwaste from blocking.The sweepback blade edge also helps feasible any rock or the landwaste deflection of attempting to be stuck between the blade;
The parts of stake and design provide simple and the effective manufacture method of cost.
It will be appreciated by those skilled in the art that the present invention can also change and change except described especially here.Screw pile a kind of may change and can comprise and add another group of double blade, this group double blade on the bottom double blade shown in Fig. 1 to 13 and with the bottom double blade place that keeps at a certain distance away.These double blade are installed suitably in the mode identical with the axle of screw pile.In this embodiment, the soil that is present between the double blade of the double blade of lower set and upper group is trapped between two groups of blades.Therefore, the screw pile of this embodiment works in the mode identical with friction pile.
In other embodiments, flat double blade (as shown in Fig. 1 to 13) can be replaced by spiral double blade or double helix scraper plate.
Should be known in that the present invention comprises all changes and the change that drops in the spirit and scope of the present invention.
Claims (20)
1. one kind comprises the axial screw stake, at least two blades stretch out outside axially from described, and each blade has leading edge, when described screw pile is screwed into when underground, described leading edge contact earth, each leading edge comprises at least a portion that the edge and the periphery off plumb direction of described axle are extended when seeing from above.
2. screw pile according to claim 1, wherein: described at least two blades comprise two blades of flat sheet.
3. screw pile according to claim 2, wherein: described plate is positioned at the opposite side of described axle, and has gradient respect to one another.
4. screw pile according to claim 2, wherein: the lower side part of each plate be positioned at axle the lower side part above, make described axle below described plate, extend, and can before described plate, contact the soil.
5. screw pile according to claim 4, wherein: the lower end of described axle comprises drill hammer, and described drill hammer has two radially relative tips in its end.
6. screw pile according to claim 1, wherein: when viewed from above, the described leading edge of each blade comprises from the radially-protruding part of described axle.
7. screw pile according to claim 1, wherein: the described leading edge of each blade comprises two or more straight marginal portions of extending with the angle that differs from one another.
8. screw pile according to claim 7, wherein: described straight marginal portion comprises: the inward flange part, described inward flange part goes out from described shaft extension; Middle sweepback marginal portion, described in the middle of the sweepback marginal portion against the direction of rotation sweepback of described blade, and partly stretch out from described inward flange at a certain angle; And outer edge part, described outer edge part is stretched out from described mid portion at a certain angle.
9. screw pile according to claim 1, wherein: when described leading edge extends away from described axle, the crooked and sweepback gradually of described leading edge.
10. screw pile according to claim 1, wherein: the described leading edge of each blade tilts or fines away.
11. screw pile according to claim 1, wherein: the back edge and the leading edge mirror image of each blade symmetry and each blade.
12. one kind comprises the axial screw stake, at least two blades stretch out outside axially from described, each blade has leading edge, when described screw pile is screwed into when underground, described leading edge contact earth, each leading edge comprises the sweepback part, and described sweepback partly is used for inserting the rock deflection that underground process and the described sweepback of described leading edge partly contact at described screw pile.
13. screw pile according to claim 12, wherein: described at least two blades comprise two blades of flat sheet, and described plate is positioned on the opposite side of described axle, and has gradient respect to one another.
14. screw pile according to claim 13, wherein: the lower side part of each plate be positioned at the axle the lower side part above, make described axle below described plate, extend and can before described plate, contact the soil, the lower end of described axle comprises drill hammer, and described drill hammer has two radially relative tips in its end.
15. screw pile according to claim 12, wherein: when viewed from above, the described leading edge of each blade comprises from the radially-protruding part of described axle.
16. screw pile according to claim 12, wherein: the leading edge of each blade comprises two or more straight marginal portions of extending with the angle that differs from one another.
17. screw pile according to claim 16, wherein: described straight marginal portion comprises: the inward flange part, and described inward flange part goes out from described shaft extension; The sweepback part, described sweepback part is partly stretched out from described inward flange at a certain angle; And outer edge part, described outer edge part is partly stretched out from described sweepback at a certain angle.
18. screw pile according to claim 12, wherein: when described blade left described extension, described sweepback part was against the direction of rotation sweepback gradually of described blade.
19. screw pile according to claim 12, wherein: the described leading edge of each blade tilts or fines away and each blade symmetry, thus the back edge of each blade and leading edge mirror image.
20. one kind comprises the axial screw stake, at least two blades are from described axially outer stretching out, and each blade has leading edge, and when described screw pile is screwed into when underground, described leading edge contacts earth, and each leading edge shrinks towards axle.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2007906259A AU2007906259A0 (en) | 2007-11-15 | Improved Screw Pile | |
| AU2007906259 | 2007-11-15 | ||
| AU2007906720 | 2007-12-11 | ||
| AU2007906720A AU2007906720A0 (en) | 2007-12-11 | Improved Screw Pile | |
| PCT/AU2008/001668 WO2009062231A1 (en) | 2007-11-15 | 2008-11-11 | Improved screw pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101910521A true CN101910521A (en) | 2010-12-08 |
Family
ID=40638230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008801237356A Pending CN101910521A (en) | 2007-11-15 | 2008-11-11 | Improved screw pile |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20100266344A1 (en) |
| CN (1) | CN101910521A (en) |
| NZ (1) | NZ585477A (en) |
| WO (1) | WO2009062231A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10760602B2 (en) | 2015-06-08 | 2020-09-01 | American Piledriving Equipment, Inc. | Systems and methods for connecting a structural member to a pile |
| US10385531B2 (en) | 2015-10-09 | 2019-08-20 | American Piledriving Equipment, Inc. | Split flight pile systems and methods |
| US10392871B2 (en) | 2015-11-18 | 2019-08-27 | American Piledriving Equipment, Inc. | Earth boring systems and methods with integral debris removal |
| US9957684B2 (en) | 2015-12-11 | 2018-05-01 | American Piledriving Equipment, Inc. | Systems and methods for installing pile structures in permafrost |
| JP6709464B2 (en) * | 2016-09-16 | 2020-06-17 | 株式会社シグマベース | Steel pipe pile |
| US10364542B2 (en) * | 2017-05-31 | 2019-07-30 | Black Bear Innovation, Llc | Open end friction pile |
| WO2022056471A1 (en) | 2020-09-14 | 2022-03-17 | Nextracker Inc. | Support frames for solar trackers |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4756129A (en) * | 1982-12-21 | 1988-07-12 | Webb Brian C | Ground anchor and apparatus to set and remove same |
| US5113952A (en) * | 1988-04-07 | 1992-05-19 | Power Planter, Inc. | Auger planter method |
| US5067571A (en) * | 1988-04-07 | 1991-11-26 | Power Planter, Inc. | Auger planter |
| JPH11140871A (en) * | 1997-11-10 | 1999-05-25 | Nkk Corp | Screwed-in type steel pipe pile with wing |
| US6817810B2 (en) * | 2002-12-03 | 2004-11-16 | Robert L. Jones | Piering device with adjustable helical plate |
| US7037045B2 (en) * | 2003-10-06 | 2006-05-02 | Jones Robert L | Modular tubular helical piering system |
| JP4267489B2 (en) * | 2004-03-12 | 2009-05-27 | 株式会社三誠 | Winged steel pipe pile |
| JP2005315050A (en) * | 2004-03-30 | 2005-11-10 | Masahiro Sugano | Rotary buried pile |
| JP2006265951A (en) * | 2005-03-24 | 2006-10-05 | Fukushima Pulse Kk | Under-reamed supporting plate attached rotating buried pile |
| JP2006312825A (en) * | 2005-05-09 | 2006-11-16 | Sumitomo Metal Ind Ltd | Rotational penetration pile and its construction method |
| US7018139B1 (en) * | 2005-05-23 | 2006-03-28 | Cantsink, Inc. | Structural helical pile |
-
2008
- 2008-11-11 NZ NZ585477A patent/NZ585477A/en not_active IP Right Cessation
- 2008-11-11 WO PCT/AU2008/001668 patent/WO2009062231A1/en active Application Filing
- 2008-11-11 CN CN2008801237356A patent/CN101910521A/en active Pending
-
2010
- 2010-05-14 US US12/780,156 patent/US20100266344A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| NZ585477A (en) | 2013-03-28 |
| US20100266344A1 (en) | 2010-10-21 |
| WO2009062231A1 (en) | 2009-05-22 |
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Application publication date: 20101208 |