EP2294264B1 - Foundation device for posts, piles and similar objects - Google Patents
Foundation device for posts, piles and similar objects Download PDFInfo
- Publication number
- EP2294264B1 EP2294264B1 EP09736025A EP09736025A EP2294264B1 EP 2294264 B1 EP2294264 B1 EP 2294264B1 EP 09736025 A EP09736025 A EP 09736025A EP 09736025 A EP09736025 A EP 09736025A EP 2294264 B1 EP2294264 B1 EP 2294264B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- platter
- post
- elongated body
- pile
- ground
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000007906 compression Methods 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims 1
- 239000002689 soil Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 5
- 238000005553 drilling Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
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
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/80—Ground anchors
- E02D5/801—Ground anchors driven by screwing
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/22—Sockets or holders for poles or posts
- E04H12/2207—Sockets or holders for poles or posts not used
- E04H12/2215—Sockets or holders for poles or posts not used driven into the ground
- E04H12/2223—Sockets or holders for poles or posts not used driven into the ground by screwing
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/22—Sockets or holders for poles or posts
- E04H12/2253—Mounting poles or posts to the holder
- E04H12/2269—Mounting poles or posts to the holder in a socket
Definitions
- the present invention relates to a foundation device for posts, piles and the like.
- the invention relates to a foundation device that can be fixed in the ground, for instance for supporting posts or vertical or inclined piles of different kinds, for instance for building palisades, fences, or for road signals, pylons, parasols, supporting structures and the like.
- posts e.g. posts for hedges
- various methods e. g. by means of pile drivers, by screwing, or by a combination of hitting and screwing.
- Screw or helical piles are known. Screw piles have at their lower end some turns of a cylindrical spiral with cutting edge made of cast iron, steel or forged iron. The shape of the screw depends on the nature of the subsoil.
- Helical piles have a lower end consisting of a cusp having four helical ribs, and they are generally fixed by percussion and are used in soils with medium consistency.
- fixing the post in the ground comprises preparing a hole into which the post is to be driven, with or without the formation of a base of concrete or other hardening material.
- the ground hardness is such that hole drilling is difficult: one can think of grounds covered with waterproofing layers, such as road surfaces, or of particularly hard grounds; in other cases, drilling a durable hole, giving sufficient time for driving the post, is difficult due to the low consistency of the soil (think for instance of a sandy soil), and often it is necessary to drill holes of greater diameter, which are to be filled with jets of concrete into which the post is to be previously embedded.
- EP 1975345 teaches using a post foundation device consisting of a hollow conical body with an external helix, which device is fixed in the ground and into which the post can be inserted.
- a post foundation device consisting of a hollow conical body with an external helix, which device is fixed in the ground and into which the post can be inserted.
- such a device has the drawback that it requires use of a filling material capable of filling the hollow spaces that are created when the foundation device is screwed into the ground, in order to provide a sufficiently robust anchoring of the device in the ground.
- DE 10 2005 045 574 A1 discloses a foundation device far posts, piles and the like, the device including a cylindrical section at the ground side with a neighboring conical section and a further cylindrical section.
- the spiral screw is at the conical section for screwing into the ground.
- the bottom cylindrical section has a pointed tip while the opposite end has means arranged to enable associating a bar for screwing the device into the ground.
- a ground anchor for posts comprising a tube with screw part and stabilizer cap attached to help drive anchor into ground.
- the stabilizer cap has a planar shape and at least one tooth extending in a downwards direction and can be fitted onto the tube and can be brought into contact with the soil.
- the device according to the invention can be advantageously used for making a stable foundation for posts, piles and the like, in any type of ground, even covered with asphalt layers.
- the foundation device can be effectively fixed in the ground by screwing it by means of a suitable tool, either hand-driven or power-driven, which can be subsequently removed and replaced by a post, a pile or the like.
- the device according to the invention can be advantageously used for supporting posts of any material and with any cross-sectional shape, in particular posts made of steel, wood, cement, plastics, with circular, T-shaped, square etc. cross-section, by changing the shape of the hole in the platter..
- foundation device 11 includes an elongated body 13, arranged to be fixed in the ground and having a length varying depending on the applications and the soil for which the device is intended, for instance 50 cm for supporting posts of fences in soils with medium consistency.
- body 13 is so shaped as to define, at a first end 13a (upper end), a compression portion including a platter 15, arranged on a plane substantially perpendicular to longitudinal axis "S" of said elongated body 13.
- the platter thus radially extends with respect to said axis, and it is arranged to axially compress (arrow F) ground surface ST when said body is fixed in the ground.
- a guiding portion is provided, comprising a screw tip 17 enabling the introduction of the foundation device into ground TR through a rotational movement.
- Body 13 preferably has a circular cross-section and has an internal axial cavity 19 extending over at least part (preferably at least 20%) of the length of body 13, starting from upper end 13a.
- said body 13 preferably has an annular rib 21 radially extending inside cavity 19 and defining an abutment, inside cavity 19, for the base of the shaft of a post or a pile or the like inserted in the foundation device.
- Platter 15 is preferably frusto-conical, with the major base directed towards body 13, and has a central hole 23 allowing access to internal cavity 19 of body 13.
- platter 15 is equipped with a locking device 25 including a bracket 27, axially extending on platter 15 on the opposite side with respect to body 13.
- the bracket has a threaded thoughhole 29 for a locking screw 31, arranged to radially engage the shaft of a post or a pile or the like that is partially received in hollow 19 and projects from the foundation device through hole 23 of platter 15.
- said locking device 25 When said locking device 25 is in engagement configuration, said shaft cannot be rotated or removed from the foundation device.
- platter 15 is brought in contact with ground surface ST when foundation device 11 is being fixed, and since the foundation device is preferably screwed into the ground, it is clear that the circular shape of platter 15 is preferable; however, other geometrical shapes, e.g. a square or hexagonal shape, are possible for platter 15.
- said platter 15 will have a sufficient radial extension to ensure a large abutment surface against the ground, and therefore its diameter will be at least twice, preferably at least three times, the diameter of body 13.
- screw tip 17 has some turns of a cylindrical spiral with cutting edge 33 and ends with a conical portion 35.
- FIG. 3 an adapter 41 associated with foundation device 11 is shown, which adapter enables receiving in the foundation device thus obtained the base of the shaft of a post or a pile or the like having a different cross-section (in the case illustrated, a greater cross-sectional size) from the section of hole 23 and cavity 19.
- Adapter 41 has a stem 43 whose shape and size are compatible with hole 23 and cavity 19, and a cylindrical body 45, defining a corresponding seat 47 for the base of the shaft of a post or a pile or the like, is associated with, for instance welded to, the stem.
- cylindrical body 45 preferably has a radial hole 49 through which a radial screw for locking the shaft of the post or pile or the like received in seat 47 can pass.
- stem 43 can be introduced into cavity 19 of body 13 through hole 23, and then locked by means of locking device 25.
- a valiant embodiment of platter 15 is shown, in which the platter has a central portion 15a associated with, for instance welded to, body 13, and a second removable annular portion or ring 15b.
- Securing means for instance some screws 18, in the example illustrated three screws spaced apart by 120°, are provided for securing ring 15b to central portion 15a
- ring 15b can preferably be associated with body 13 by introducing tip 17 through the central opening of ring 15b and by locking screws 18 when ring 15b has been brought in contact with central portion 15a
- platters 15 with the size and shape required by the different soil types, by simply replacing ring 15b, with a resulting considerable saving in production, distribution and storage of the foundation device.
- platters 15 may have a size preferably in the range 15 to 50 cm in diameter.
- FIG. 7 there is shown a second embodiment of the foundation device, generally denoted 111. Parts identical to those described above are denoted by the same reference numerals.
- foundation device 111 has an elongated body 113 formed by a metal rod 114 twisted in form of a spiral, preferably cylindrical or conical, and arranged to be fixed in the ground.
- a compression portion is defined, arranged to axially compress (arrow F) the ground surface when said body is fixed in the ground, said portion including a platter 115, radially extending with respect to said elongated body 113, and an axial seat 119 arranged to receive the base of the shaft of a post or a pile or the like.
- a guiding portion is defined, arranged to facilitate the introduction of the foundation device into the ground through a rotational movement
- metal rod 114 is twisted to a spiral so that axial seat 119 has a greater cross-sectional size than remaining portion 113b of body 113, each said portion being however preferably cylindrical with constant cross-sectional size.
- device 111 is capable of receiving posts with larger sizes than the cross sectional size of guiding portion 113b, and moreover transition region 121 between both portions forms an abutment for the base of the shaft of the post or the like when the latter is inserted in seat 119.
- the locking means include a frusto-conical plate 26 secured to platter 15 by means of an axial screw 28 adjacent to central hole 23.
- plate 26 is advantageously radially deformed by compression towards the inside of hole 23, thereby assisting in locking post shaft PT the base of which is received in the foundation device.
- FIGs. 10 there is shown a first embodiment of the tool guiding the descent of the foundation device according to the invention into the ground through a rotational movement.
- tool 61 includes a corresponding T-shaped key having, at the base of shank 63, an insertion end 65 with half-circular cross-section, compatible with the cross-section of hole 23 in platter 15.
- tool 61 can be gripped at the ends of control handle 67 and rotated to guide the descent of the foundation device into the ground
- a platter 115 provided with a circular central hole 123 and two diametrically opposite holes 16, and a T-shaped key 71 provided, at the bottom of central shank 73, with a circular insertion end 75 arranged to engage hole 123 and with two axial pins 76 carried by radial arms and intended to engage holes 16 in platter 115.
- tool 71 can be gripped at the ends of control handle 77 and rotated to guide the descent of the foundation device into the ground.
- the foundation device according to the invention can also be fixed in the ground by using a power-driven tool.
- FIG. 13 and 14 there is shown a third embodiment of the foundation device, generally denoted 211. Parts identical to those described above are denoted by the same reference numerals.
- foundation device 211 includes a platter 215 formed of two frusto-conical portions 215a, 215b arranged one over the other and connected together by locking means 225, preferably consisting of one or more screws 228 that are secured in corresponding threaded holes 230 formed in lower platter portion 215a and that pass through radial slots 232 formed in upper platter portion 215b.
- portions 215a, 215b of platter 215 are slidable relative to each other and, since they are frusto-conical, respective axes S, S' can be arranged at different angles.
- axis S' of upper portion 215b and axis S of lower portion 215a are shown, defining an angle of about 5° between them.
- lower platter portion 215a is secured, for instance welded, to upper end 13a of body 13, whereas upper platter portion 215b can be advantageously associated with a post or a post receiving member or the like 234, which can be mounted vertically or at any desired angle, by correcting alignment errors, if any, of body 13 once the latter has been fixed in the ground thanks to the mutual sliding of platter portions 215a, 215b.
- FIGs. 15 and 16 there is shown a fourth embodiment of the foundation device, generally denoted 311. Parts identical to those described above are denoted by the same reference numerals.
- foundation device 311 includes a platter 315 formed of two frusto-conical portions 315a, 315b arranged one over the other and connected together by locking means 325, preferably consisting of one or more screws 328 that are secured in corresponding threaded holes 330 formed in lower platter portion 315a and pass through holes 332 formed in upper platter portion 315b.
- lower portion 315a of platter 315 is secured, for instance welded, to upper end 13a of body 13.
- Both portions 315a, 315b of platter 315 have a respective central hole 336a, 336b allowing passage of a portion of a sphere 338 mounted idle, in correspondence of platter 315, in cavity 19 provided in body 13 of device 311.
- said sphere 338 is associated with a post or a post receiving member or the like 334, which, by rotating sphere 338 inside cavity 19, can therefore be tilted so that its axis S' forms a desired angle ⁇ with axis S of body 13.
- the tightening of screws 328 results in sphere 338 becoming locked between both platter portions 315a, 315b and hence in the impossibility of further changing said angle ⁇ .
- alignment errors, if any, between axes S and S' can be corrected by rotating sphere 338 inside cavity 19 while assembling the device.
- the foundation device according to the invention in the various embodiments described, can be made of steel or plastics or other suitable materials.
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Description
- The present invention relates to a foundation device for posts, piles and the like.
- More precisely, the invention relates to a foundation device that can be fixed in the ground, for instance for supporting posts or vertical or inclined piles of different kinds, for instance for building palisades, fences, or for road signals, pylons, parasols, supporting structures and the like.
- It is known that posts, e.g. posts for hedges, are fixed in the ground with various methods, e. g. by means of pile drivers, by screwing, or by a combination of hitting and screwing.
- Also screw or helical piles are known. Screw piles have at their lower end some turns of a cylindrical spiral with cutting edge made of cast iron, steel or forged iron. The shape of the screw depends on the nature of the subsoil.
- Helical piles have a lower end consisting of a cusp having four helical ribs, and they are generally fixed by percussion and are used in soils with medium consistency.
- Generally, fixing the post in the ground comprises preparing a hole into which the post is to be driven, with or without the formation of a base of concrete or other hardening material.
- It is also known to use hand-driven or power-driven augers in order to drill the hole into the ground where the post is to be fixed.
- Of course, depending on the soil consistency, for instance a rocky, friable, sandy ... soil, hole drilling and post fixing can be more or less easily performed.
- In extreme cases, the ground hardness is such that hole drilling is difficult: one can think of grounds covered with waterproofing layers, such as road surfaces, or of particularly hard grounds; in other cases, drilling a durable hole, giving sufficient time for driving the post, is difficult due to the low consistency of the soil (think for instance of a sandy soil), and often it is necessary to drill holes of greater diameter, which are to be filled with jets of concrete into which the post is to be previously embedded.
- Moreover, in many applications, for instance when building a fence or installing a fencing net or preparing stake rows for vineyards, it is necessary to install a considerable number of posts, which must withstand conditions of use that sometimes can be severe, as is for instance the case of a fence for a corral.
- The above circumstances entail therefore considerable operating difficulties and high costs for both the materials and the labour.
- Moreover, use of bases of concrete, besides entailing high costs, is not always possible, both due to the type of ground, and because such use makes changing the post arrangement difficult.
-
EP 1975345 teaches using a post foundation device consisting of a hollow conical body with an external helix, which device is fixed in the ground and into which the post can be inserted. However such a device has the drawback that it requires use of a filling material capable of filling the hollow spaces that are created when the foundation device is screwed into the ground, in order to provide a sufficiently robust anchoring of the device in the ground. -
DE 10 2005 045 574 A1 discloses a foundation device far posts, piles and the like, the device including a cylindrical section at the ground side with a neighboring conical section and a further cylindrical section. The spiral screw is at the conical section for screwing into the ground. The bottom cylindrical section has a pointed tip while the opposite end has means arranged to enable associating a bar for screwing the device into the ground. -
DE 203 04 257 U1 on which the preamble of claim 1 is based discloses a ground anchor for posts, comprising a tube with screw part and stabilizer cap attached to help drive anchor into ground. The stabilizer cap has a planar shape and at least one tooth extending in a downwards direction and can be fitted onto the tube and can be brought into contact with the soil. - Moreover, the results attained with the above device are not always satisfactory, in that the posts often are not stable enough and tend to oscillate as time goes by.
- It is an object of the present invention to provide a solution for the problems mentioned above.
- It is another object of the invention to provide a solution that is easy to be implemented and that can be industrially produced at reasonable costs.
- The above and other objects are achieved with the support for posts and the like as claimed in the appended claims.
- Thanks to the cooperation between the compression portion, radially extending with respect to the longitudinal axis of the device, and the screw or helical guiding portion enabling the device penetration, the device according to the invention can be advantageously used for making a stable foundation for posts, piles and the like, in any type of ground, even covered with asphalt layers.
- Moreover, according to the invention, thanks to the provision of a shaped hole in the platter, and to the provision of the screw or helical guiding portion, the foundation device can be effectively fixed in the ground by screwing it by means of a suitable tool, either hand-driven or power-driven, which can be subsequently removed and replaced by a post, a pile or the like.
- Moreover, the device according to the invention can be advantageously used for supporting posts of any material and with any cross-sectional shape, in particular posts made of steel, wood, cement, plastics, with circular, T-shaped, square etc. cross-section, by changing the shape of the hole in the platter..
- Some preferred embodiments of the invention will be provided by way of nonlimiting examples with reference to the accompanying drawings, in which equal numerical references denote equal or equivalent parts, and in which:
-
Fig. 1 is a side view of the device according to a first embodiment of the invention, fixed in the ground; -
Fig. 2 is a top view of the device shown inFig. 1 ; -
Fig. 3 is a part-sectional view of the device shown inFig. 1 , associated with an adapter; -
Fig. 4 is a side view of the device on which a variant embodiment of the platter is mounted; -
Fig. 5 is a side view of the device shown inFig. 4 , with the platter removed; -
Fig. 6 is a top view of the device shown inFig. 5 ; -
Fig. 7 is a side view of the device according to a second embodiment of the invention; -
Fig. 8 is a cross-sectional view of a variant embodiment of the locking device associated with the platter where a post is mounted; -
Fig. 9 is a top view of the platter shown inFig. 8 , without the post; -
Fig. 10 is a side view of a first embodiment of the guiding tool; -
Fig. 11 is a top view of a second variant embodiment of the platter, -
Fig. 12 is a side view of a second embodiment of the guiding tool; -
Fig. 13 is a part-sectional side view of a third embodiment of the device; -
Fig. 14 is an enlarged side view of the device shown inFig. 13 ; -
Fig. 15 is a part-sectional side view of a fourth embodiment of the device; -
Fig. 16 is an enlarged side view of the device shown inFig. 15 . - According to the first embodiment of the invention, shown in
Figs. 1 and 2 ,foundation device 11 includes anelongated body 13, arranged to be fixed in the ground and having a length varying depending on the applications and the soil for which the device is intended, for instance 50 cm for supporting posts of fences in soils with medium consistency. - According to the invention,
body 13 is so shaped as to define, at afirst end 13a (upper end), a compression portion including aplatter 15, arranged on a plane substantially perpendicular to longitudinal axis "S" of saidelongated body 13. The platter thus radially extends with respect to said axis, and it is arranged to axially compress (arrow F) ground surface ST when said body is fixed in the ground. - At
opposite end 13b (lower end) of saidbody 13, a guiding portion is provided, comprising ascrew tip 17 enabling the introduction of the foundation device into ground TR through a rotational movement. -
Body 13 preferably has a circular cross-section and has an internalaxial cavity 19 extending over at least part (preferably at least 20%) of the length ofbody 13, starting fromupper end 13a. - Moreover, said
body 13 preferably has anannular rib 21 radially extending insidecavity 19 and defining an abutment, insidecavity 19, for the base of the shaft of a post or a pile or the like inserted in the foundation device. - Platter 15 is preferably frusto-conical, with the major base directed towards
body 13, and has acentral hole 23 allowing access tointernal cavity 19 ofbody 13. - Moreover,
platter 15 is equipped with alocking device 25 including abracket 27, axially extending onplatter 15 on the opposite side with respect tobody 13. The bracket has a threadedthoughhole 29 for alocking screw 31, arranged to radially engage the shaft of a post or a pile or the like that is partially received in hollow 19 and projects from the foundation device throughhole 23 ofplatter 15. When saidlocking device 25 is in engagement configuration, said shaft cannot be rotated or removed from the foundation device. - Since
platter 15 is brought in contact with ground surface ST whenfoundation device 11 is being fixed, and since the foundation device is preferably screwed into the ground, it is clear that the circular shape ofplatter 15 is preferable; however, other geometrical shapes, e.g. a square or hexagonal shape, are possible forplatter 15. - Moreover, according to the invention, said
platter 15 will have a sufficient radial extension to ensure a large abutment surface against the ground, and therefore its diameter will be at least twice, preferably at least three times, the diameter ofbody 13. - In the embodiment illustrated,
screw tip 17 has some turns of a cylindrical spiral withcutting edge 33 and ends with aconical portion 35. - Turning now to
Fig. 3 , anadapter 41 associated withfoundation device 11 is shown, which adapter enables receiving in the foundation device thus obtained the base of the shaft of a post or a pile or the like having a different cross-section (in the case illustrated, a greater cross-sectional size) from the section ofhole 23 andcavity 19. -
Adapter 41 has astem 43 whose shape and size are compatible withhole 23 andcavity 19, and acylindrical body 45, defining acorresponding seat 47 for the base of the shaft of a post or a pile or the like, is associated with, for instance welded to, the stem. - Moreover,
cylindrical body 45 preferably has aradial hole 49 through which a radial screw for locking the shaft of the post or pile or the like received inseat 47 can pass. - Advantageously, stem 43 can be introduced into
cavity 19 ofbody 13 throughhole 23, and then locked by means of lockingdevice 25. - Referring to
Figs. 4 to 6 , a valiant embodiment ofplatter 15 is shown, in which the platter has acentral portion 15a associated with, for instance welded to,body 13, and a second removable annular portion orring 15b. Securing means, for instance somescrews 18, in the example illustrated three screws spaced apart by 120°, are provided for securingring 15b tocentral portion 15a - Moreover,
ring 15b can preferably be associated withbody 13 by introducingtip 17 through the central opening ofring 15b and by lockingscrews 18 whenring 15b has been brought in contact withcentral portion 15a - Advantageously, according to this variant embodiment, it is thus possible to obtain
platters 15 with the size and shape required by the different soil types, by simply replacingring 15b, with a resulting considerable saving in production, distribution and storage of the foundation device. In particular,platters 15 may have a size preferably in therange 15 to 50 cm in diameter. - Turning now to
Fig. 7 , there is shown a second embodiment of the foundation device, generally denoted 111. Parts identical to those described above are denoted by the same reference numerals. - According to this embodiment,
foundation device 111 has anelongated body 113 formed by ametal rod 114 twisted in form of a spiral, preferably cylindrical or conical, and arranged to be fixed in the ground. - At a
first end 113a (upper end) of saidbody 113 a compression portion is defined, arranged to axially compress (arrow F) the ground surface when said body is fixed in the ground, said portion including aplatter 115, radially extending with respect to saidelongated body 113, and anaxial seat 119 arranged to receive the base of the shaft of a post or a pile or the like. - At
opposite end 113b (lower end), a guiding portion is defined, arranged to facilitate the introduction of the foundation device into the ground through a rotational movement - In the illustrated example,
metal rod 114 is twisted to a spiral so thataxial seat 119 has a greater cross-sectional size than remainingportion 113b ofbody 113, each said portion being however preferably cylindrical with constant cross-sectional size. - In this manner,
device 111 is capable of receiving posts with larger sizes than the cross sectional size of guidingportion 113b, and moreovertransition region 121 between both portions forms an abutment for the base of the shaft of the post or the like when the latter is inserted inseat 119. - Referring to
Figs. 8 and 9 , a first variant embodiment of the locking means, here generally denoted 125, is shown. In that embodiment, the locking means include a frusto-conical plate 26 secured toplatter 15 by means of anaxial screw 28 adjacent tocentral hole 23. Asscrew 28 is being screwed intoplatter 15,plate 26 is advantageously radially deformed by compression towards the inside ofhole 23, thereby assisting in locking post shaft PT the base of which is received in the foundation device. - Referring to
Figs. 10 , there is shown a first embodiment of the tool guiding the descent of the foundation device according to the invention into the ground through a rotational movement. - According to this embodiment,
tool 61 includes a corresponding T-shaped key having, at the base ofshank 63, aninsertion end 65 with half-circular cross-section, compatible with the cross-section ofhole 23 inplatter 15. Advantageously,tool 61 can be gripped at the ends of control handle 67 and rotated to guide the descent of the foundation device into the ground - Referring to
Figs. 11 and12 , there are respectively shown aplatter 115, provided with a circularcentral hole 123 and two diametricallyopposite holes 16, and a T-shapedkey 71 provided, at the bottom ofcentral shank 73, with acircular insertion end 75 arranged to engagehole 123 and with twoaxial pins 76 carried by radial arms and intended to engageholes 16 inplatter 115. Advantageously,tool 71 can be gripped at the ends of control handle 77 and rotated to guide the descent of the foundation device into the ground. - In the alternative, the foundation device according to the invention can also be fixed in the ground by using a power-driven tool.
- Turning now to
Figs. 13 and14 , there is shown a third embodiment of the foundation device, generally denoted 211. Parts identical to those described above are denoted by the same reference numerals. - According to this embodiment,
foundation device 211 includes aplatter 215 formed of two frusto-conical portions means 225, preferably consisting of one ormore screws 228 that are secured in corresponding threadedholes 230 formed inlower platter portion 215a and that pass throughradial slots 232 formed inupper platter portion 215b. Advantageously, thanks to the above arrangement,portions platter 215 are slidable relative to each other and, since they are frusto-conical, respective axes S, S' can be arranged at different angles. - Referring in particular to
Fig. 13 , axis S' ofupper portion 215b and axis S oflower portion 215a are shown, defining an angle of about 5° between them. - According to this embodiment,
lower platter portion 215a is secured, for instance welded, toupper end 13a ofbody 13, whereasupper platter portion 215b can be advantageously associated with a post or a post receiving member or the like 234, which can be mounted vertically or at any desired angle, by correcting alignment errors, if any, ofbody 13 once the latter has been fixed in the ground thanks to the mutual sliding ofplatter portions - Turning to
Figs. 15 and 16 , there is shown a fourth embodiment of the foundation device, generally denoted 311. Parts identical to those described above are denoted by the same reference numerals. - According to this embodiment,
foundation device 311 includes aplatter 315 formed of two frusto-conical portions means 325, preferably consisting of one ormore screws 328 that are secured in corresponding threadedholes 330 formed inlower platter portion 315a and pass throughholes 332 formed inupper platter portion 315b. - According to this embodiment,
lower portion 315a ofplatter 315 is secured, for instance welded, toupper end 13a ofbody 13. Bothportions platter 315 have a respectivecentral hole sphere 338 mounted idle, in correspondence ofplatter 315, incavity 19 provided inbody 13 ofdevice 311. In correspondence of the sphere portion passing through hole 336 and projecting out ofplatter 315, saidsphere 338 is associated with a post or a post receiving member or the like 334, which, by rotatingsphere 338 insidecavity 19, can therefore be tilted so that its axis S' forms a desired angle α with axis S ofbody 13. The tightening ofscrews 328 results insphere 338 becoming locked between bothplatter portions - According to this embodiment, alignment errors, if any, between axes S and S' can be corrected by rotating
sphere 338 insidecavity 19 while assembling the device. - Advantageously, the foundation device according to the invention, in the various embodiments described, can be made of steel or plastics or other suitable materials.
Claims (15)
- A foundation device (11; 111) for posts, piles and the like, the device including an elongated body (13; 113), arranged to be fixed in the ground and shaped so as to define, at a first end (13a; 113a), a compression portion radially extending with respect to the longitudinal axis (S) of said elongated body (13; 113) and arranged to axially compress the ground surface when said elongated body (13; 113) is fixed in the ground, said compression portion including a platter (15; 115; 215; 315) arranged on a plane substantially perpendicular to the longitudinal axis (S) of said elongated body (13; 113) and radially extending with respect to said axis, said platter being arranged to axially compress the ground surface when said elongated body (13; 113) is fixed in the ground, and so as to define, at the opposite end (13b; 113b), a screw or helical guiding portion, said first end (13a; 113a) being further provided with means arranged to enable associating a post, a pile or the like with said device, said means including an axial cavity (19; 119) extending over at least part of the length of said first end and arranged to receive the base of the shaft of a post, a pile or the like, characterized in that said platter (15; 115; 215; 315) has a diameter at least twice the diameter of said elongated body and in that said platter (15; 115; 215; 315) is frusto-conical, with the major base directed towards the elongated body (13; 113), and has a central hole (23) allowing access to said internal cavity (19; 119) of said elongated body (13) which receives the shaft of a post, a pile or the like.
- The device as claimed in claims 1, wherein said platter (15; 115; 215; 315) has circular, square or hexagonal shape.
- The device as claimed in any of claims 1 or 2, wherein said platter (15; 115; 215; 315) is further equipped with a locking device (25) including a bracket (27), axially extending on the platter on the opposite side with respect to the elongated body (13) and having a threaded thoughhole (27) for a locking screw (31) arranged to radially engage the shaft of a post or a pile or the like the base of which is received in the foundation device.
- The device as claimed in any of claims 1 to 3, wherein the platter (15; 115; 215; 315) is further equipped with a locking device (125) including a plate (26) secured to the platter (15) by means of an axial screw (28) adjacent to a central hole (23) formed in the platter, said plate (26) being arranged to be radially deformed towards the inside of said hole (23) thereby assisting in locking the shaft of the post, pile or the like the base of which is received in the foundation device.
- The device as claimed in any preceding claim, wherein an adapter (41) is provided which can be associated with the foundation device (11) and has a stem (43) having associated therewith a cylindrical body (45) defining a corresponding seat (47) for the base of the shaft of a post or a pile or the like, thereby enabling receiving the base of the shaft of a post or a pile or the like in the foundation device.
- The device as claimed in any preceding claim, wherein said guiding portion includes a screw tip (17) arranged to enable the introduction of the foundation device into the ground through a rotational movement
- The device as claimed in claim 6 wherein the screw tip (17) carries some turns of a cylindrical spiral (33) with cutting edge and ends with a conical portion (35).
- The device as claimed in claim 1, wherein said elongated body (13; 113) has an annular rib (21) radially extending inside the cavity (19; 119) and defining a corresponding abutment for the base of the shaft of a post or a pile or the like inserted in the foundation device (11; 111).
- The device as claimed in claim 1, wherein said platter (15; 115; 215; 315) has a central portion (15a) associated with the elongated body (13; 113) and a second annular portion or ring (15b) that is removable, locking means being provided for locking said two platter portions together.
- The device as claimed in claim 1, wherein said elongated body (13; 113) is formed from a metal rod (114) twisted to a spiral and arranged to be fixed in the ground.
- The device as claimed in claim 10, wherein said metal rod (114) is twisted to a spiral so that the axial seat (19; 119) has a greater cross-sectional size than the remaining portion (113b) of the elongated body (113).
- The device as claimed in claim 1, wherein said platter (215) is formed of two frusto-conical portions (215a, 215b) arranged one over the other so as to be slidable relative to each other and connected together by locking means (225), a first one of said portions being associated with said elongated body (13; 113) and a second one of said portions being arranged to support a post, a pile or the like.
- The device as claimed in claim 12, wherein said locking means include one or more screws (228) that are secured in corresponding threaded holes (230) formed in the first portion (215a) of said platter and that pass through slots (232) formed in the second portion (215b).
- The device as claimed in claim 1, wherein said platter (315) is formed of two frusto-conical portions (315a, 315b) arranged one over the other, said platter portions (315a, 315b) having a respective central hole (336a, 336b) allowing the passage of a portion of a sphere (338) mounted idle in correspondence of said platter (315), a post, a post receiving member or the like (334) being associated in correspondence of the sphere portion projecting out of platter (315).
- The device as claimed in claim 14, wherein said platter includes locking means for blocking the rotation of said sphere.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITBI20080005 ITBI20080005A1 (en) | 2008-04-21 | 2008-04-21 | SUPPORT FOR POLES |
PCT/IB2009/051399 WO2009130625A2 (en) | 2008-04-21 | 2009-04-02 | Foundation device for posts, piles and similar objects |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2294264A2 EP2294264A2 (en) | 2011-03-16 |
EP2294264B1 true EP2294264B1 (en) | 2012-08-29 |
Family
ID=40296613
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09736025A Active EP2294264B1 (en) | 2008-04-21 | 2009-04-02 | Foundation device for posts, piles and similar objects |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2294264B1 (en) |
IT (1) | ITBI20080005A1 (en) |
WO (1) | WO2009130625A2 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2954788B1 (en) * | 2009-12-24 | 2012-01-27 | Ancrest S A | ANCHORING DEVICE IN A MULTILAYER SOIL |
CN102071682A (en) * | 2011-01-20 | 2011-05-25 | 中铁二十二局集团有限公司 | Method for correcting inclined hole formed by high strength stratum bridge drilling pile in karst growing area |
ITMI20110853A1 (en) * | 2011-05-16 | 2012-11-17 | Ack Ventures S R L | GROUND ANCHORING ELEMENT FOR AT LEAST ONE BEARING STRUCTURE |
IT201800003784A1 (en) * | 2018-03-20 | 2019-09-20 | Vaer S R L | COMPASS AND A METHOD FOR BUILDING PALISES |
WO2022076944A1 (en) * | 2020-10-09 | 2022-04-14 | Hubbell Incorporated | Supports for helical piles |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2001252791B2 (en) * | 2000-04-10 | 2006-10-19 | Clifford Alan Parker | An anchor device |
DE10250257B4 (en) * | 2001-12-12 | 2010-05-12 | Erich Haimerl | Straßenleitpfostenfuß |
WO2004020744A1 (en) * | 2002-09-02 | 2004-03-11 | Colin William Francis | A pier |
DE20304257U1 (en) * | 2003-03-17 | 2003-05-22 | Hsu, Shih Hao, Bi Tou Hsiang, Changhua | Ground anchor for e.g. posts, comprises tube with screw part and stabiliser cap attached to help drive anchor into ground |
DE102005023465B3 (en) * | 2005-05-20 | 2007-01-18 | Krinner Innovation Gmbh | Driving tool to cut upright post hole in soil has vertical groove engaging with matching rib on surrounding sleeve |
DE102005045574A1 (en) * | 2005-09-23 | 2007-04-12 | "DOMA"-Autozubehör und Industriebedarf GmbH | Screw foundation for a ground anchor, to be screwed into the ground, has a spiral at a conical section between two cylindrical sections |
EP1975345A3 (en) * | 2007-03-28 | 2014-05-14 | Krinner Innovation GmbH | Foundation device for building elements to be anchored in the ground |
DE202007008228U1 (en) * | 2007-06-12 | 2007-08-23 | Gross, Manfred | Leitpfostenhalterung |
DE202008010913U1 (en) * | 2008-08-14 | 2008-11-06 | Krinner Innovation Gmbh | Screw foundation system with hardenable filling compound |
-
2008
- 2008-04-21 IT ITBI20080005 patent/ITBI20080005A1/en unknown
-
2009
- 2009-04-02 WO PCT/IB2009/051399 patent/WO2009130625A2/en active Application Filing
- 2009-04-02 EP EP09736025A patent/EP2294264B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
WO2009130625A2 (en) | 2009-10-29 |
ITBI20080005A1 (en) | 2008-07-21 |
WO2009130625A3 (en) | 2010-07-15 |
EP2294264A2 (en) | 2011-03-16 |
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