US20230046295A1 - Piledriver modules, adaptive pile driver system and corresponding method - Google Patents

Piledriver modules, adaptive pile driver system and corresponding method Download PDF

Info

Publication number
US20230046295A1
US20230046295A1 US17/793,623 US202117793623A US2023046295A1 US 20230046295 A1 US20230046295 A1 US 20230046295A1 US 202117793623 A US202117793623 A US 202117793623A US 2023046295 A1 US2023046295 A1 US 2023046295A1
Authority
US
United States
Prior art keywords
pile
drill rod
module
drill
drilling
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.)
Pending
Application number
US17/793,623
Other languages
English (en)
Inventor
Andreas Hansson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
A Hansson Holding AB
Original Assignee
A Hansson Holding AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by A Hansson Holding AB filed Critical A Hansson Holding AB
Assigned to A HANSSON HOLDING AB reassignment A HANSSON HOLDING AB ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HANSSON, ANDREAS
Publication of US20230046295A1 publication Critical patent/US20230046295A1/en
Pending legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/02—Placing by driving
    • E02D7/04—Hand (-actuated) pile-drivers
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/02—Placing by driving
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/02—Placing by driving
    • E02D7/06—Power-driven drivers
    • E02D7/10—Power-driven drivers with pressure-actuated hammer, i.e. the pressure fluid acting directly on the hammer structure
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/18—Placing by vibrating
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/28—Placing of hollow pipes or mould pipes by means arranged inside the piles or pipes
    • 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
    • E21B10/00—Drill bits
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
    • E21B10/327—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools the cutter being pivoted about a longitudinal axis

Definitions

  • the present disclosure relates to pile driver modules, and an adaptive pile driver system for driving a pile at a worksite, wherein the pile driver system can be adapted to different situations by the piledriver modules.
  • Pile driving is used for a variety of applications, such as driving piles for foundations of buildings of varying sizes or smaller projects such as driving fence posts into the ground. These different applications impose different requirements on the pile driver used. Furthermore, the soil in which the pile is to be driven also gives rise to different requirements, e.g. if the pile is to be driven into sand it may be preferable to drive the pile by vibration, or if the pile is to be driven into clay it may be preferable to hammer or drill the pile.
  • DE202015006358 U1 discloses a hand-held pneumatic pile driver with an exchangeable tool element.
  • that disclosed hand-held pneumatic pile driver is reliant on an external source to deliver the air pressure.
  • the hand-held pneumatic pile driver disclosed therein can only drive a pile by hammering.
  • a drilling module for driving a pile along a first axis, wherein the drilling module is connectable to a drill rod and comprises:
  • a drill bit configured to drive the pile along the first axis, wherein the drill bit is configured to rotate with the drill rod when the drilling module is connected to the drill rod, wherein the drill bit comprises a first cutter configured for drilling along the first axis, wherein the first cutter is rotatable between a drilling position and a collapsed position, wherein in the drilling position a width of the drill bit in a plane perpendicular to the first axis corresponds to or exceeds a width of the pile in the plane perpendicular to the first axis, and wherein in the collapsed position the width of the drill bit in a plane perpendicular to the first axis is less than the width of the pile in a plane perpendicular to the first axis.
  • the drilling module may be connectable to the drill rod via a threaded connection, a bayonet connections, a male-female connection, or a combination of these.
  • a cutter is to be understood as any tool suitable for drilling through soil.
  • the first cutter may be connected to a base part of the drilling module via a pivot connection to allow for the first cutter to rotate.
  • the drilling module is provided with means for delimiting rotation of the first cutter to the collapsed position, the drilling position and positions there in-between, e.g. the drilling module may be provided with stop plates which the first cutter abuts at the collapsed position and the drilling position.
  • the drill bit may further comprise a second cutter, a third cutter, and/or a fourth cutter all movable between a drilling position and a collapsed position.
  • the cutters may be central symmetric around the first axis.
  • the drill bit may comprise one or more stationary cutters, i.e. cutter which are fixed in position on the drill bit.
  • the drilling position being a position where in the first cutter is configured for drilling through soil.
  • the collapsed position being a position allowing for the drill bit to be retracted/moved through a pile.
  • the first cutter is rotatable around an axis parallel to the first axis.
  • the first cutter is rotatable from the collapsed position to the drilling position by rotating the drill bit around the first axis in a first direction, and wherein the first cutter is rotatable from the drilling position to the collapsed position by counter-rotating the drill bit around the first axis in a second direction.
  • the first cutter is rotatable around an axis perpendicular to the first axis.
  • the first cutter is rotatable from the drilling position to the collapsed position by moving the drill bit towards a pile being driven by the drill bit.
  • the drill bit rod may simply be pulled up together with the drill rod, this may be achieved via a user pulling up the drill rod, alternatively the drill rod may be pulled up by a jack, a crane or other external means.
  • the drill bit may be pulled towards the pile by counter-rotating the drill bit, i.e. rotating the drill bit in an opposite direction relative to when a pile was being driven down.
  • the drilling module comprises a pilot drill configured to guide driving of the pile along the first axis, wherein the pilot drill extends longitudinally along the first axis.
  • the pilot drill preferably extends beyond the first cutter to engage with the ground before the first cutter when driving down a pile.
  • the pilot drill may be provided with a pilot cutter to enable the pilot drill to drill through the ground.
  • the drilling module comprises a centering device configured for being at least partly inserted into the pile being driven by the drilling module to center the drill bit relative to the pile.
  • the centering device may have a similar cross-section to the pile being driven in a plane perpendicular to the first axis, preferably the similar cross-section of the centering device is uniformly scaled by reduction relative to the cross-section of the pile.
  • the drill bit is connectable to the drill rod in a releasable connection.
  • Having a releasable connection between the drill rod and the drill bit allows for easy exchange of the drill bit. Furthermore, the releasable connection may give the possibility of using the drill bit as a sacrificial drill bit.
  • the drill bit is formed with a track configured for facilitating movement of soil away from the bottom of the pile.
  • Having a track in the drill bit provides a path for soil to take away from the bottom of the pile. Furthermore, the track may help facilitating an upwards movement of soil moved away from the bottom of the pile.
  • the upwards movement of soil is desirable as soil moved up may press down on the drill bit, the pile and/or the drill rod, thereby assisting in driving in the pile.
  • the track provided may be a spiral path, thereby facilitating the movement of soil into the track while the drill bit rotates.
  • the tracks may cooperate with a track in the drill rock, e.g. if the drill rod is an auger the track in the drill bit may lead soil to the helical screw blade of the auger.
  • the drill bit is formed with a protrusion configured for disturbing and loosening soil underneath the drill bit.
  • One or more protrusions may preferably be formed on the first cutter.
  • the drilling module comprises a pilot drill then one or more protrusions may be formed on the pilot drill.
  • the drill bit comprises one or more wings, which is configured to extend beyond the pile, the one or more wing being configured for facilitating movement of soil away from the bottom of the pile.
  • the one or more wing may be formed as blades, configured for radiating away from the pile, that are set at a pitch to form at least part of a helical spiral.
  • the drill bit may comprise one, two, three, four or more wings.
  • the first cutter in the drilling position may acts as a wing facilitating movement of soil away from the bottom of the pile.
  • a rock drilling module for driving a pile along a first axis, wherein the rock drilling module comprises:
  • an outer rock drill bit configured to drill an outer annular hole through rock with a diameter corresponding to or exceeding the pile in a plane perpendicular to the first axis, wherein the outer rock drill bit is connectable to a drill rod, wherein the outer rock drill bit is configured to rotate with the drill rod when connected to the drill rod,
  • an inner rock drill bit configured to drill an inner cylindrical hole through rock within the outer annular hole, wherein the inner rock drill bit is connectable to a drill rod, wherein the inner rock drill bit is configured to rotate with the drill rod when connected to the drill rod,
  • a rock cracking wedge configured to be inserted into the inner cylindrical hole to crack the rock in-between the inner cylindrical hole and the outer annular hole.
  • an adaptive pile driver system for driving a pile at a worksite comprising:
  • a pile driver comprising:
  • a drill rod with a first end and a second end, the drill rod being adapted for extending within the pile in parallel with the pile, wherein the motor is configured to rotate the drill rod,
  • system further comprising:
  • a vibrating module configured to drive the pile by vibrating the pile, said vibrating module is connectable to the drill rod, wherein said vibrating module is drivable by rotation of the drill rod when mounted,
  • a hammering module configured to drive the pile by hammering the pile, said hammering module is connectable to the drill rod, wherein said hammering module is drivable by rotation of the drill rod when mounted, and
  • a drilling module configured to drive the pile by drilling, said drilling module is connectable to the drill rod, wherein said drilling module is drivable by rotation of the drill rod when mounted,
  • pile driver is adaptable to the worksite where the pile is to be driven, by connecting one or more of pile driver modules to the drill rod.
  • an improved pile driver system for drive a pile at a worksite is provided.
  • the different modules allow for the pile driver to be adapted to the conditions at different work sites. Furthermore, since each module is connected to the drill rod and driven by the rotation of the drill rod, no additional hydraulics or wiring is needed to be added for the pile driver to drive a pile by drilling, hammering, or vibration. If prior to arriving at a work site soil tests have been performed, a user of the adaptive pile driver may also choose to only bring the relevant modules from the system to the work site, thereby alleviating transport of the pile driver.
  • the adaptive pile driver system may comprise any combination of the modules, i.e. the vibrating module, the hammering module, the drilling module, and the rock drilling module.
  • the adaptive pile driver system may comprise three different modules, e.g. the hammering module, the drilling module, and the rock drilling module.
  • the adaptive pile driver system comprises all four modules, i.e. the vibrating module, the hammering module, the drilling module, and the rock drilling module.
  • a worksite is meant a place where work is to be performed by the pile driver, the worksite may be defined by the terrain and/or the soil types present at the work site.
  • rock drilling module for adapting the pile driver system allows for the pile driver to drive piles through rock, concrete, boulders and/or stones.
  • the pile driver comprises a footrest, allowing a user of the adaptive pile driver system to deliver a pressure for driving the pile.
  • the pile driver may be provided with handles on which a user can press down.
  • the pile driver is a hand-held and/or hand actuated pile driver.
  • Such a hand-held driver may be provided with handles.
  • the handles may further be provided with actuators for starting and turning off the electric motor.
  • the motor of the pile driver is configured to provide a vibrational and/or a hammering force for driving the pile.
  • the motor may then assist or fully replace some of the pile driver modules in driving the pile, as sometimes adding a pile driver module to achieve a vibrational and/or hammering force may be excessive.
  • the motor is an electric motor.
  • the electric motor assures that wiring or hoses for generators or hydraulics is obsolete or at least kept to a minimum. This removes the risk of failures in externally exposed wiring and hosing, which in some cases can pose a severe safety risk. Furthermore, the electric motor adds extra mobility and freedom to the pile driver, as the pile driver is not limited by hosing or wiring but can be moved freely around.
  • a vibrating module for driving a pile along a first axis, where the vibrating module comprises:
  • a vibration device comprising:
  • a drill rod part being connectable to a drill rod, the drill rod part being configured to rotate with the drill rod when connected to the drill rod,
  • eccentric mass is in-between the drill rod and the pile when the drill rod part is connected to the drill rod, wherein the eccentric mass is configured to generate vibration when the drill rod rotates, wherein the transfer member is configured to transfer the generated vibrations to the pile.
  • a simple pile driving module capable of driving a pile by vibration.
  • the pile driving module connectable to the drill rod allows for easy addition and removal of the pile driver module.
  • Having the pile driver module easy to add and remove allows for a pile driver to be adapted on-site at a work site.
  • the pile driver module may be installed at a desired position on a drill rod, thus allowing for the vibration module to deliver down the hole vibration. Having the vibration generated as a result of rotation generated by the drill rod also removes the need for extra hydraulic or wiring,
  • a hammering module for driving a pile along a first axis, wherein the hammering module comprises:
  • a drill rod part being connectable to a drill rod, the drill rod part being configured to rotate with the drill rod,
  • a hammer element comprising a top surface and a bottom surface, wherein the bottom surface forms one or more bottom ledges
  • a force device connected to the top surface of the hammer element, said force device being configured to store and release mechanical energy
  • a stationary element with a top surface comprising one or more top ledges complementary to the bottom ledges of the hammer element, and wherein the top surface of the stationary element is engaged with the bottom surface of the hammer element, and
  • the hammer element is configured to rotate relative to the stationary, wherein rotation of the hammer element relative to the stationary element moves the hammer element along a bottom ledge, wherein the movement of the hammer element along the bottom ledge stores mechanical energy in the force device, wherein the stored mechanical energy is released when the hammer element rotates past the bottom ledge, wherein the released mechanical energy, wherein the released mechanical energy is configured for being delivered to drive the pile.
  • adapting the pile driver by connecting either a vibrating module, a hammering module, a drilling module, a rock drilling module, or a combination of these to the pile driver.
  • the assessment of the work site may be carried out by prior soil sampling of the work site.
  • the assessment of the work site may be carried out using the knowledge of the user of the pile driver.
  • the adaptation of the pile driver is carried out by connecting one or more pile driver modules to the drill rod dependent on the assessment of the work site.
  • FIG. 1 shows a schematic cross-sectional view of a pile driver for driving a pile at a worksite according to an embodiment of the invention.
  • FIG. 2 shows a schematic cross-sectional view of a hammering module provided on top of a pile.
  • FIG. 3 shows a schematic cross-sectional of an embodiment of a drilling module connected to a drill rod according to the invention.
  • FIG. 4 a shows a schematic top perspective view of an embodiment of a drilling module 5 according to the invention.
  • FIG. 4 b shows a schematic bottom perspective view of a drilling module according to the invention.
  • FIG. 4 c shows a schematic bottom view of an embodiment of a drilling module according to the invention.
  • FIG. 4 d shows a schematic top view of an embodiment of a drilling module according to the invention.
  • FIG. 5 shows an embodiment of a drilling module according to the invention.
  • FIGS. 6 a and 6 b show perspective schematic views of an embodiment of a rock drilling module according to the invention.
  • FIG. 7 shows a perspective schematic view of an embodiment of a hammering module according to the invention.
  • FIG. 8 shows a perspective schematic view of an embodiment of a vibrating module according to the invention
  • the pile driver 1 comprises a motor for providing a rotational force, the motor is not shown.
  • the motor may be any kind of electrical motor, which is able to convert electric energy into mechanical energy.
  • the electric motor may be an AC motor or a DC motor.
  • the motor may be hydraulic motor or a combustion engine.
  • the motor may additionally provide a vibrational force and/or a hammering force, which may assist in driving the pile 3 . This may for example be achieved by an impact mechanism as already known from hammer drills.
  • Said motor is connected to an electrical power unit, the electrical power unit is not shown.
  • the electrical power unit may be a battery or any other unit capable of delivering energy to the motor.
  • the electrical power unit is a rechargeable battery.
  • the electric motor is configured for rotating a drill rod 2 .
  • the drill rod 2 may be any standard drill rod used for drilling in soil.
  • the drill rod 2 may have a small diameter such as 2 cm or 3 cm, or a larger diameter such as 14 cm or 15 cm.
  • the drill rod 2 extends longitudinally between a first end and a second end.
  • the drill rod 2 is configured to rotate around a longitudinal rotation axis R 1 .
  • the drill rod 2 may be rotated clockwise or counter-clockwise around the longitudinal rotation axis R 1 .
  • the drill rod 2 may be modular and comprise a plurality of drill rod parts 21 connected together. In some cases, the length of one drill rod part 21 may be enough to form the full drill rod 2 .
  • the drill rod parts 21 may be inter-connected by threaded connections, bayonet connections, male and female connectors, or a combination of these.
  • the drill rod parts 21 forming the drill rod 2 may also be of different lengths, allowing for a length of the drill rod 2 to be easily adaptable.
  • the drill rod 2 may be a smooth drill rod 2 , alternatively the drill rod 2 may be provided as an auger. The auger 2 may facilitate transport of soil through the pile 3 .
  • the pile driver 1 is configured for driving the pile 3 .
  • the pile 3 in the shown embodiment is a pipe pile 3 , though the invention is not limited to only pipe piles, but may be used for sheet piles, screw piles, secant piles, etc.
  • the pile 3 chosen may depend on the needed function of the pile 3 , conditions at the work site, and how it is to be driven into the soil, e.g. if the pile is to be driven by vibration, drilling, hammering or a combination of these.
  • the pile driver 1 further comprises a footrest 4 .
  • the footrest 4 allowing a user of the pile driver 1 to apply a pressure onto the pile 3 .
  • the footrest 4 in the shown embodiment is formed as a plate, which allows the user to step onto the plate to deliver a pressure to the pile 3 .
  • pressure may be delivered to the pile 3 via hand-rests provided on the pile driver 1 .
  • the pile driver 1 may be a hand-held pile driver and/or a hand actuated pile driver. To facilitate it being a hand-held pile driver, the pile driver 1 may be provided with handles for holding the pile driver 1 during operation of the pile driver 1 . To facilitate it being a hand actuated pile driver the handles may be provided with an actuator for starting and stopping the electric motor of the pile driver 1 , e.g. push buttons or levers. Alternatively, the pile driver 1 may be controllable by a remote control unit. Furthermore, the pile driver 1 may be configured to be mounted on larger machinery, e.g. an excavator or a drill rig.
  • the pile driver 1 can be adapted to different work site conditions, e.g. soil type. Adaptation of the pile driver 1 is achieved by connecting a combination of different pile driver modules to the drill rod 2 of the pile driver system 1 .
  • the pile driver modules may be connected to the pile driver 1 independently of each other, so the pile driver modules do not impose restrictions on each other. In the following text a more in-depth explanation of different modules for the pile driver system is given.
  • a drilling module 5 has been connected to the pile driver 1 .
  • the drilling module 5 being configured for driving the pile 3 by drilling.
  • the drilling module 5 is an example of a pile driver module for the pile driver 1 .
  • the drilling module 5 comprises a drill bit 51 .
  • the drill bit 51 may be made from steel or carbide; it may also be a steel bit with a tungsten carbide tip.
  • the drill bit 51 may be formed with a track to facilitate the movement of soil to the sides of the pile 3 .
  • the track may be formed in an exterior surface of the drill bit 51 .
  • the track may be formed by milling of the exterior surface of the drill bit 51 .
  • the drill bit 51 may be formed with one or more protrusions to disturb and loosen soil underneath the pile, thereby facilitating movement of the soil. The one or more protrusions extending from an exterior surface of the drill bit.
  • the drill bit 51 is connected to a drill rod part 21 of the drill rod 2 .
  • the connection between the drill bit 51 and the drill rod part 21 may be achieved by a threaded connection, bayonet connection, or male and female connectors or any other suitable connection.
  • the drill bit 51 may be provided as an integral part of a drill rod part 21 , wherein the drill rod part 21 may be connected to other drill rod part 21 of the drill rod 2 by a threaded connection, bayonet connection, or male and female connectors or any other suitable connection.
  • having a threaded connection or a male-female connection between the drill bit 51 and the drill rod part 21 allows for disconnecting the drill bit 51 from the drill rod part 21 , without needing to have access to the drill bit 51 .
  • the disconnection between the drill bit 51 and the drill rod 2 when there is a threaded connection may happen by rotating the drill rod 2 counter-clockwise, e.g. if the threaded connection between the drill bit 51 and the drill rod 2 is achieved with a right-handed thread, the drill rod 2 may be rotated counter-clockwise to disconnect the drill bit 51 .
  • the disconnection may happen by simply pulling up the drill rod 2 , e.g. if the drill bit 51 is provided with a female connector and the drill rod is provided with a male connector or vice versa.
  • the drill bit 51 acts as a barrier for the bottom of the pile 3 , thereby assuring soil does not enter the pile 3 from the bottom of the pile 3 when the pile 3 is driven into the soil.
  • the drill bit 51 may be a collapsible drill bit, thereby allowing for the drill bit 51 to be retracted subsequent to the pile 3 being driven into the soil.
  • the drill bit 51 may also comprise wings, which extend beyond the pile 3 . The wings facilitating movement of soil away from the bottom of the pile 3 . Furthermore, as soil is pushed away from the bottom of the pile 3 , the moved soil will start pushing down on the wings, thereby pressuring the pile 3 in a downward direction.
  • the pile 3 may be closed off at the bottom to assure soil does not enter the pile 3 .
  • the pile 3 may be closed off by a flat plate at the bottom of pile 3 .
  • the pile 3 may be closed with a conical shaped plate at the bottom, to facilitate the pile 3 being pressured, vibrated, or hammered into the soil.
  • FIG. 3 showing a schematic cross-sectional of an embodiment of a drilling module 5 connected to a drill rod 2 according to the invention.
  • the drilling module 5 is configured for driving a pile 3 along a first axis.
  • the first axis coincides with a longitudinal rotation axis R 1 of which the drill rod 2 is configured to rotate about.
  • the terms first axis and the longitudinal rotation axis R 1 are interchangeable with each other.
  • the drilling module comprises a drill bit 51 .
  • the drill bit 51 is configured to rotate with the drill rod 2 when the drilling module 5 is connected to the drill rod 2 .
  • the drill bit 51 comprises a first cutter 511 configured for drilling along the longitudinal rotation axis R 1 .
  • the drill bit 51 further comprises a second cutter 512 configured for drilling along the longitudinal rotation axis R 1 .
  • the first cutter 511 and the second cutter 512 are rotatable between a drilling position and a collapsed position. When the first cutter 511 and the second cutter 512 are in the drilling position a width of the drill bit 51 in a plane perpendicular to the longitudinal rotation axis R 1 corresponds to or exceeds a width of the pile 3 in the plane perpendicular to the longitudinal rotation axis R 1 .
  • the width of the drill bit 51 in a plane perpendicular to the longitudinal rotation axis R 1 is less than the width of the pile 3 in a plane perpendicular to the longitudinal rotation axis R 1 .
  • the drilling module 5 further comprises a pilot drill 52 .
  • the pilot drill 52 is configured to guide driving of the pile 3 along the longitudinal rotation axis R 1 .
  • the pilot drill 52 extends longitudinally along the longitudinal rotation axis R 1 .
  • the pilot drill 52 extends beyond the first cutter 511 and the second cutter 512 .
  • the pilot drill 52 is configured to rotate with the drill rod 2 when the drilling module 5 is connected to the drill rod.
  • the pilot drill 52 comprises a pilot cutter 521 at a longitudinal end of the pilot drill 52 .
  • the pilot cutter 521 allows the pilot drill 52 to drill through soil.
  • the drilling module 5 comprises a centering device 53 .
  • the centering device 53 is inserted into the pile 3 .
  • the centering device centers the drilling module 5 relative to the pile 3 .
  • the centering device 53 is provided as a ring extending along an inner circumference of the pile 3 .
  • the centering device 53 restricts movement of the drilling module 5 in a plane perpendicular to the longitudinal rotation axis R 1 .
  • the centering ring 53 also keeps the drill rod 2 centered relative to the pile 3 .
  • the drill rod 2 is provided as an auger 2 .
  • the auger 2 comprises a helical screw blade 21 extending longitudinally along the longitudinal rotation axis R 1 .
  • the auger 2 extends within the pile 3 .
  • the helical screw blade 21 extends towards the inner circumference of the pile.
  • the helical screw blade 21 stops a distance from the inner circumference of the pile 3 .
  • the helical screw blade 21 extends so no to little distance separates the helical screw blade 21 and the inner circumference of the pile. Having no distance, or a small distance which does not allow soil to pass through in-between the inner circumference of the pile 3 and the helical screw blade 21 , may be useful for lifting soil up through the auger 2 .
  • FIGS. 4 a - 4 d showing a schematic top perspective view, a schematic bottom perspective view, a schematic bottom view, and a schematic top view of an embodiment of a drilling module 5 according to the invention.
  • the drilling module 5 comprises a first cutter 511 and a second cutter 512 .
  • the first cutter 511 and the second cutter 512 each comprises a plurality of protrusions 5111 , 5121 .
  • the plurality of protrusions may facilitate drilling by the first cutter 511 and the second cutter 512 by disturbing and loosening soil underneath the first cutter 511 and the second cutter 512 .
  • the first cutter 511 and the second cutter 512 are pivotally connected to a base 58 of the drilling module 5 .
  • the pivotal connections 571 , 572 between the base 58 and the first cutter 511 and the second cutter 512 allows the first cutter 511 and the second cutter 512 to rotate around an axis parallel to a first axis A 1 .
  • the drilling module 5 is configured for driving a pile 3 along the first axis A 1 .
  • the first cutter 511 and the second cutter 512 are rotated to a drilling position. In the drilling position the first cutter and the second cutter abut a stop plate 56 . Furthermore, the first cutter 511 and the second cutter 512 extend beyond an outer circumference of a centering device 53 in the drilling position. The stop plate 56 prevents further rotation of the first cutter 511 and the second cutter 512 in a first direction. By rotating the first cutter 511 and the second cutter 512 in a second direction, opposite the first direction, the first cutter 511 and the second cutter 512 moves from the drilling position to the collapsed position. In the collapsed position the first cutter 511 and the second cutter 512 does not extend beyond an outer circumference of the centering device 53 .
  • the centering device 53 is provided as a ring.
  • the centering device 53 being configured for being at least partly inserted into a pile 3 .
  • Extending from an inner circumference of the centering device 53 are two ridges 531 .
  • the centering device 53 comprise one ridge, three ridges, or four ridges.
  • the ridges 531 are engaged with corresponding grooves 581 in the base 58 of the drilling module 5 .
  • the engagement between the grooves 581 and the ridges 531 prevents the centering device 53 from rotating relative to the base 58 of the drilling module 5 .
  • a bottom surface of the centering device 53 rests on a shelf 582 formed in the base 58 .
  • the base 58 is formed with a plurality of shelfs 582 on which the bottom surface of the centering device 53 can rest.
  • the shelf 582 prevents movement of centering device 53 relative to the base 58 in one direction along the first axis A 1 .
  • the base 58 of the drilling module 5 is provided with a center hole 55 for receiving a drill rod 2 .
  • a suitable connection e.g. by inserting a bolt or a clip through the base 58 and the drill rod 2 .
  • the drilling module further comprises a pilot drill 52 .
  • the pilot drill 52 is configured to guide driving of a pile 3 .
  • the pilot drill 52 extends beyond the first cutter 511 and the second cutter 512 .
  • the pilot drill 52 is configured to rotate with the drill rod 2 when the drilling module 5 is connected to the drill rod.
  • the pilot drill 52 comprises a pilot cutter 521 at a longitudinal end of the pilot drill 52 .
  • the pilot cutter 521 allows the pilot drill 52 to drill through soil.
  • FIG. 5 showing a different embodiment of a drilling module 5 according to the invention.
  • a first cutter 511 and a second cutter are pivotally connected to a base 58 of the drilling module 5 .
  • the pivotal connections 571 allows the first cutter and the second cutter to rotate around an axis perpendicular to the first axis A 1 .
  • FIGS. 6 a and 6 b showing perspective schematic cut-out views of a rock drilling module 8 according to an embodiment of the invention.
  • the rock drilling module 8 being for drive a pile along a first axis A 1 .
  • the rock drilling module 8 comprises an outer rock drill bit 81 .
  • the outer rock drill bit 81 is in the shown embodiment configured to drill an outer annular hole 841 through rock 84 .
  • the outer diameter of the annular hole 841 corresponding to or exceeding the pile 3 in a plane perpendicular to the first axis A 1 .
  • the outer rock drill bit 81 is connectable to a drill rod 2 .
  • the outer rock drill bit 81 is configured to rotate with the drill rod 2 when connected to the drill rod 2 .
  • the outer rock drill bit 81 comprises four outer rock cutters 811 configured to drill through rock 84 , concrete, stone and/or boulders.
  • the four outer rock cutters 811 are arranged center symmetric around the first axis A 1 .
  • the outer rock drill bit 81 comprises one rock cutter, two rock cutters, three rock cutters, or more.
  • the rock cutters 811 may be forces with a track or an inclination configured to create a force on the rock cutters forcing them away from the first axis A 1 in a plane perpendicular to the first axis A 1 .
  • the rock drilling module 8 further comprises an inner rock drill bit 82 configured to drill an inner cylindrical hole 842 through rock 84 within the outer annular hole 841 .
  • the inner rock drill bit 82 is connectable to a drill rod 2 , and the inner rock drill bit 82 is configured to rotate with the drill rod 2 when connected to the drill rod 2 .
  • the inner rock drill bit 82 comprises one inner rock cutter 821 configured to drill through rock 84 , concrete, stone and/or boulders.
  • the inner rock cutter 821 is configured to drill an inner cylindrical hole 842 , where a center longitudinal axis of the inner cylindrical hole 842 coincides with the first axis A 1 .
  • the inner rock drill bit 82 comprises two rock cutters, three rock cutters, four rock cutters, or more.
  • the inner rock drill bit 82 extends beyond the outer rock drill bit 81 along the first axis A 1 , thus allowing the inner rock drill bit 82 to act as a pilot for the outer rock drill bit 81 .
  • the inner rock drill bit 82 is configured to guide driving of the pile 3 along the first axis A 1 .
  • the rock drilling module 8 further comprises a rock cracking wedge 83 .
  • the rock cracking wedge 83 is configured to be inserted into the inner cylindrical hole 842 to crack the rock 84 in-between the inner cylindrical hole 842 and the outer annular hole 841 .
  • the rock cracking wedge 83 is connected to the inner rock drill bit 82 and configured to follow the movement axial movement along the first axis A 1 of the inner rock drill bit 82 .
  • the rock cracking wedge 83 comprises an outer wedge 831 .
  • the outer wedge 831 is formed by two wedge parts 8311 . In the shown embodiment the two wedge parts 8311 are opposed each other.
  • the two opposing wedge parts 8311 are movable relative to each other in a plane 5 perpendicular to the first axis A 1 .
  • the outer wedge 831 is movably connected to the inner rock drill bit 82 to allow axial along the first axis A 1 relative to the inner rock drill bit 82 .
  • the outer wedge 831 being formed with a hollow conical structure with a circular top opening at the top of the conical structure and a circular bottom opening at the bottom of the conical structure.
  • the inner rock drill bit 821 is configured to drill the inner cylindrical hole 842 with a diameter exceeding a diameter of the circular top opening and less than a diameter of the circular bottom opening.
  • Arranged at least partly within the outer wedge 831 is an inner wedge 832 .
  • the inner wedge 832 is fixedly connected to the inner rock drill bit 82 , i.e. the inner wedge 832 is connected to prevent relative movement in-between the inner wedge 832 and the inner rock drill bit 82 .
  • the inner wedge 832 being formed as a conical structure, wherein a diameter of the base of the conical structure of the inner wedge 832 exceeds a diameter of the circular top opening of the outer wedge 831 . Consequently, the outer wedge 831 is prevented from sliding past the inner wedge 832 .
  • a conical shapes are used to achieve this effect, however the inner and outer wedges 831 , 832 may assume any shapes which prevent the outer wedge 831 from sliding past the inner wedge 832 .
  • the outer rock drill bit 81 forms the annular hole 841 in the rock 84 and the inner rock drill bit 82 forms the inner cylindrical hole 842 .
  • the outer wedge 831 reaches and is partly inserted into the inner cylindrical hole 842 . Further, drilling of the rock drilling module 8 results in the outer wedge 831 being axially moved relative to the inner rock drill bit 82 along the first axis A 1 until it abuts the inner wedge 832 .
  • drilling of the rock drilling module 8 results in the two wedge parts 8311 outer wedge 831 being moved away from each other by the inner wedge, resulting in a horizontal force being delivered to the rock 84 , thus cracking the rock 84 in-between the inner cylindrical hole 842 and the outer annular hole 841 .
  • the outer wedge 831 may be formed in one part of resilient material allowing for the outer wedge 831 to be expanded by the inner wedge 832 in order to deliver a force to material in-between the inner cylindrical hole 842 and the outer annular hole 841 .
  • the outer wedge 831 is formed with an outer protrusion on an interior side of the conical structure of the outer wedge 831 .
  • the inner wedge 832 may then be formed with an inner protrusion on an outer side of the conical structure of the inner wedge 832 . During operation when the inner wedge 832 is rotating relative to the outer wedge 831 , the inner protrusion is also rotating relative to the outer protrusion.
  • a vibrating module 6 has been connected to the pile driver 1 .
  • the vibrating module 6 being configured for driving the pile 3 by vibration.
  • the vibrating module 6 is an example of a pile driver module for the pile driver 1 .
  • the vibrating module 6 comprises a vibrating device.
  • the vibrating device comprises a drill rod part 21 .
  • the drill rod part 21 of the vibrating device is connectable to the drill rod parts 21 of the drill rod 2 .
  • the drill rod part 21 of the vibrating device may be identical to other drill rod parts 21 of the drill rod 2 .
  • the drill rod part 21 of the vibrating device is configured to rotate with the drill rod 2 .
  • an eccentric mass 61 In either direct or in-direct connection with the drill rod part 21 of the vibrating device is an eccentric mass 61 .
  • the eccentric mass 61 being eccentric relative to the drill rod part 21 on which it is connected.
  • the eccentric mass 61 is connected so as to rotate with the drill rod part 21 of the vibrating device.
  • the eccentric mass 61 is placed in-between the drill rod 2 and the pile 3 . Rotation of the eccentric mass 61 around the drill rod 2 generates vibrations.
  • the vibrations generated by the eccentric mass 61 are transferred to the pile 3 via a transfer member 62 .
  • the transfer member 62 is configured for contacting the pile 3 and transferring vibrations generated by the eccentric mass 61 to the pile 3 .
  • the eccentric mass 61 may contact the pile 3 directly, thereby also acting as the transfer member 62 .
  • the transfer member 62 may be formed with an arm 621 extending from the drill rod 2 to the pile 3 .
  • the transfer member 62 may also comprise a contacting element 622 for contacting the pile 3 .
  • the contacting element 622 may be formed as an annular element, where the annular element has an outer diameter equal to an inner diameter of the pile 3 , thereby assuring a uniform contact to the pile 3 . If the transfer member 62 is formed with an arm 621 extending from the drill rod 2 to the pile 3 , the arm 621 may be bendable to allow the arm to deform in response to changes in the surface of the pile 3 , e.g. if a thread, bent or bump is present on the pile 3 . In the embodiment shown in FIG.
  • vibration module 6 only one vibration module 6 is connected to the pile driver 1 , but it is also possible to connect a plurality of vibrating modules 6 to the pile driver 1 , e.g. two, three or more. Especially in cases, wherein it is required to connect several drill parts 21 together it may be advantageously to connect more than one vibrating module 6 to the pile driver 1 , to achieve a uniform down the hole vibration of the pile 3 .
  • FIG. 8 showing a perspective schematic view of a vibrating module 6 according to an embodiment of the invention.
  • the vibrating module 6 being for driving a pile 3 along a first axis A 1 .
  • the vibrating module 6 being configured for driving the pile 3 along the first axis A 1 by driving it down by vibration.
  • the vibrating module 6 is connectable to a drill rod 2 via a central through-going hole in a drill rod part 21 of the vibrating module.
  • the central through-going hole being configured for receiving the drill rod 2 .
  • the drill rod part 21 is configured to rotate with the drill rod 2 .
  • Arranged at a first longitudinal end of the vibrating module is an eccentric mass 61 .
  • the eccentric mass 61 is provided as a bolt 61 extending perpendicularly to the first axis A 1 from the drill rod part 21 .
  • the bolt 61 is configured to be in-between the drill rod 2 and the pile 3 .
  • the vibrating module further comprises transfer members 62 .
  • the transfer members 62 are provided as three arms 62 extending from the drill rod part 21 .
  • the three arms 62 are configured for transferring the eccentric force created by the bolt 61 to the pile 3 .
  • the three arms 62 may be pivotably connectable to the drill rod part 21 , to allow the arms 62 to fold in when pulling up the vibration module 6 . The folding of the arms 62 may help in avoiding the arms 62 getting caught in the pile when pulling up the vibration module 6 .
  • a further eccentric mass 63 Arranged at a second longitudinal end of the vibrating module 6 is a further eccentric mass 63 .
  • the further eccentric mass 63 is arranged protruding form a further drill rod part 211 .
  • the further eccentric mass 63 is configured to be in-between the drill rod 2 and the pile 3 .
  • the further eccentric mass 63 directly contacts and transfers the eccentric force to the pile 3 .
  • a hammering module 7 has been connected to the pile driver 1 .
  • the hammering module 7 being configured for driving the pile 3 by hammering.
  • the hammering module 7 is an example of a pile driver module for the pile driver 1 .
  • the hammering module 7 comprises a drill rod part 21 .
  • the drill rod part 21 of the hammering module 7 is connectable to the drill rod parts 21 of the drill rod 2 .
  • the drill rod part 21 of the hammering module 7 may be identical to other drill rod parts 21 of the drill rod 2 .
  • the drill rod part 21 of the hammering module 7 is configured to rotate with the drill rod 2 .
  • the hammering module 7 further comprises a hammer plate 71 , a force device 72 , a stationary element 73 , and a rotatable element 74 .
  • the hammer module 7 further comprises a top plate 75 .
  • the hammer plate 71 may be a steel plate.
  • the hammer plate 71 is configured for imparting a hammering force to either the pile driver 1 or the pile 3 .
  • the hammer plate 71 is placed directly on the pile 3 .
  • the hammer plate may be place on top of a hammer cushion.
  • the hammer plate 71 is connected to the force device 72 .
  • the force device 72 may be a spring or a resilient material, which is capable of storing and releasing mechanical energy.
  • the stationary element 73 may be welded on the hammer plate 71 .
  • the stationary element 73 may be made from steel or other high durability metals.
  • the stationary element 73 comprises a stationary inclined part 731 .
  • Connected to the drill rod part 21 is the rotatable element 74 .
  • the rotatable element 74 may be welded on the drill rod part 21 .
  • the rotatable element 74 may be made from steel or other high durability metals.
  • the rotatable element 74 comprises a rotatable inclined part 741 .
  • the rotatable element 74 is configured to rotate with the drill rod part 21 . During rotation the rotatable element 74 is configured to slide onto and past the stationary element 73 .
  • the rotatable inclined part 741 slides onto the stationary inclined part 731 it causes the hammer plate 71 to rise.
  • the rise of the hammer plate 71 stores mechanical energy in the force device 72 , e.g. by the compression of a spring.
  • the rotatable element 74 slides past the stationary element 73 it causes the hammer plate 71 to fall.
  • the fall of the hammer plate 71 releases the stored energy from the force device 72 .
  • the hammering module 7 may be provided with a top plate 75 .
  • the top plate 75 being connected to the drill rod part 21 and the force device 72 .
  • the top plate 72 provides surface on which the force device 72 can be compressed against.
  • the hammering module 7 being for driving a pile along a first axis A 1 .
  • the hammering module 7 comprises a drill rod part 21 being connectable to a drill rod 2 .
  • the drill rod part 21 being configured to rotate with the drill rod 2 .
  • the drill rod part is provided as a clamp 21 .
  • the clamp 21 allows the hammering module 7 to be clamped onto the drill rod 2 .
  • Connected to the drill rod part 21 is a force device 72 .
  • the force device 72 is provided as spring 72 configured to store and release mechanical energy.
  • the spring 72 is at one longitudinal end abutting the drill rod part 21 and at the other longitudinal end abutting a hammer element 71 .
  • the hammer element 71 comprises a top surface 711 connected to the spring 72 . Furthermore, extending from the top surface 711 is a hammer protrusion 712 .
  • the hammer protrusion 712 extends from the surface 711 and into the spring 72 , thus restricting movement of the spring 72 relative to the hammer element 71 in a plane perpendicular to the first axis A 1 .
  • the hammer element 71 further comprises a bottom surface, not shown. The bottom surface forms one or more bottom ledges 713 .
  • the hammering module 7 further comprises a stationary element 73 with a top surface, not shown, forming one or more top ledges 731 complementary to the bottom ledges 713 of the hammer element 71 .
  • the top surface of the stationary element 73 is engaged with the bottom surface of the hammer element 71 .
  • the pile 3 is closed off at the bottom and the stationary element 73 is arranged resting on the bottom of the pile 3 .
  • the hammer element 71 is configured to rotate relative to the stationary element 73 .
  • the rotation of the hammer element 71 relative to the stationary element 73 moves the hammer element 71 along the one or more top ledges 731 .
  • the movement of the hammer element 71 along the bottom ledge 731 stores mechanical energy in the force device 72 .
  • the hammer element 71 is moved towards the drill rod part 21 , thus resulting in a compression of the spring 72 .
  • the stored mechanical energy is released when the hammer element 71 rotates past the one or more top ledges 731 .
  • the released mechanical energy is configured for being delivered to drive the pile 3 .
  • the pile 3 do not need to be a pipe pile 3 , e.g. if only the hammering module 7 is connected to the pile driver 1 the pile 3 does not need to be hollow.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Geology (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Vending Machines For Individual Products (AREA)
US17/793,623 2020-02-03 2021-02-03 Piledriver modules, adaptive pile driver system and corresponding method Pending US20230046295A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE2050113-6 2020-02-03
SE2050113 2020-02-03
PCT/EP2021/052565 WO2021156314A1 (en) 2020-02-03 2021-02-03 Piledriver modules, adaptive pile driver system and corresponding method

Publications (1)

Publication Number Publication Date
US20230046295A1 true US20230046295A1 (en) 2023-02-16

Family

ID=74550680

Family Applications (1)

Application Number Title Priority Date Filing Date
US17/793,623 Pending US20230046295A1 (en) 2020-02-03 2021-02-03 Piledriver modules, adaptive pile driver system and corresponding method

Country Status (6)

Country Link
US (1) US20230046295A1 (zh)
EP (1) EP4100578A1 (zh)
CN (1) CN115023523A (zh)
AU (1) AU2021217541A1 (zh)
CA (1) CA3168709A1 (zh)
WO (1) WO2021156314A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113481993A (zh) * 2021-08-13 2021-10-08 中国二十二冶集团有限公司 淤泥质软土地管桩内钻孔取土同步锤击一体化装置
CN114150666B (zh) * 2021-11-11 2023-09-19 武汉船用机械有限责任公司 电磁打桩机及其控制方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH92349A (de) * 1915-08-09 1922-01-02 Berlin Anhaltische Maschinenba Gesteinsbohrer mit Widerständen bei Aussparungen der Schneide.
DE2709030C2 (de) * 1977-03-02 1985-05-15 Stahl- Und Apparatebau Hans Leffer Gmbh, 6602 Dudweiler Drehbohrkrone mit Schwenkflügeln
DE2734185C2 (de) * 1977-07-29 1983-02-10 Stahl- Und Apparatebau Hans Leffer Gmbh, 6602 Dudweiler Anlage zum Niederbringen eines Bohrlochs für Pfahlgründungen
US4403665A (en) * 1979-09-17 1983-09-13 Bodine Albert G Sonic system for propelling pilings, drills and the like into the earth employing screw device
DE3919894A1 (de) * 1989-06-19 1990-12-20 Fromme Theo Drehbohrvorrichtung zum erweitern von vertikalen bohrungen
WO1999007521A1 (en) * 1997-08-08 1999-02-18 Power Tool Holders Incorporated Impact tool driver
DE202015006358U1 (de) 2015-09-09 2015-10-15 Nicholas Spindler Leichtgewichtige Pfahlramme mit Druckluftschlagwerk
MY191558A (en) * 2015-09-30 2022-06-30 Mcmillan Jaron Lyell Percussion device
US20180266186A1 (en) * 2017-03-14 2018-09-20 Dennis BURCA Collapsible multi-sized drill bit and method of use

Also Published As

Publication number Publication date
AU2021217541A1 (en) 2022-09-22
EP4100578A1 (en) 2022-12-14
WO2021156314A1 (en) 2021-08-12
CN115023523A (zh) 2022-09-06
CA3168709A1 (en) 2021-08-12

Similar Documents

Publication Publication Date Title
US20230046295A1 (en) Piledriver modules, adaptive pile driver system and corresponding method
US6942430B1 (en) Rotary driver for pipe piling
NZ538764A (en) A pier
JP5535894B2 (ja) 地中障害物の撤去方法とこれに用いる地中障害物の撤去用吊上げ装置
US20140151124A1 (en) Tool For Use On Exit Side Of Bore An Method Of Use Thereof
US20150259993A1 (en) Exit Side Tool For Makeup And Breakout Of Pipe
US20080190633A1 (en) Hydraulic Attachment for Skid Steer Loaders
KR20180018241A (ko) 진동 파일 드라이버
EP0565502B1 (en) Pipe handling equipment and method for a rock drilling machine
CN117868691A (zh) 一种围岩智能钻探探头
CN114043158A (zh) 市政工程施工用建筑材料对齐装置
JPH08199960A (ja) 立坑用斜め孔削孔機
US20050067192A1 (en) Apparatus and method for reducing required torque
JP4150521B2 (ja) 土留め壁の構築方法
JPH0581333U (ja) 鋼管杭の回転貫入用治具
US11680452B2 (en) System and method for disassembling drill assemblies
JP4113030B2 (ja) 鋼管杭の埋設装置および鋼管杭埋設作業用作業機
JP4977495B2 (ja) 杭圧入打ち抜き装置
JP7341076B2 (ja) 深井戸の掘削方法及び二重管保持具
JP2935401B2 (ja) 既設長尺孔内への割岩装置の挿入方法及び装置
JP2931976B1 (ja) パイルの溶接用保持具、溶接用保持装置および溶接方法
JP2009035869A (ja) 既設杭の引抜装置
JP2024058785A (ja) 振動補助装置及び施工方法
KR20180002268A (ko) 바이브로 해머가 장착된 고소 작업차
JPH0679897U (ja) 掘削装置

Legal Events

Date Code Title Description
AS Assignment

Owner name: A HANSSON HOLDING AB, SWEDEN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HANSSON, ANDREAS;REEL/FRAME:061469/0056

Effective date: 20220914

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED