NL2032960B1 - Electric piling or drilling rig - Google Patents

Electric piling or drilling rig Download PDF

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Publication number
NL2032960B1
NL2032960B1 NL2032960A NL2032960A NL2032960B1 NL 2032960 B1 NL2032960 B1 NL 2032960B1 NL 2032960 A NL2032960 A NL 2032960A NL 2032960 A NL2032960 A NL 2032960A NL 2032960 B1 NL2032960 B1 NL 2032960B1
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NL
Netherlands
Prior art keywords
crane
main
electric
auxiliary
drive
Prior art date
Application number
NL2032960A
Other languages
Dutch (nl)
Inventor
Rudolf Wilhelm Eijkens Robbie
Cornelis Maria De Jong Gerardus
Original Assignee
Dieseko Group B V
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 Dieseko Group B V filed Critical Dieseko Group B V
Priority to NL2032960A priority Critical patent/NL2032960B1/en
Application granted granted Critical
Publication of NL2032960B1 publication Critical patent/NL2032960B1/en

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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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/56—Screw piles
    • 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
    • E02D7/22—Placing by screwing down

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Earth Drilling (AREA)

Abstract

The present invention relates to a piling or drilling rig for driving a foundation object, for example an auger, a pile or sheet pile, in the ground, the rig comprising: - a piling or drilling drive, configured to apply a driving force onto the foundation object, - a crane, configured to suspend the drive, and - a power source to provide power to the drive and to the crane, characterized in that, the power source comprises: - a main electric actuator, configured to provide power to the drive, - an auxiliary electric actuator, arranged in the crane and configured to provide power to the crane, for example to move the crane and/or to move the drive, - a main battery, connected to the main electric actuator and configured to supply the main electric actuator with electric energy, and - an auxiliary battery, arranged in the crane and 3connected to the auxiliary electric actuator and configured to supply the auxiliary electric actuator with electric energy.

Description

P35832NLOO/TRE
Title: Electric piling or drilling rig
Field of the invention
The present invention relates to a piling or drilling rig, configured to drive a foundation object in the ground during use. The present invention further relates to a method of driving a foundation object in the ground by means of a piling or drilling rig, to a method of erecting a piling or drilling rig and to a method of laying down a piling or drilling rig.
State of the art
At present, piling and drilling rigs are often used to drive or form foundation objects into the ground. This is generally done by rotating an auger in the ground, to form a hole that can be filled with curable substance, like concrete, or by vibrating a metal tubular pile or sheet pile, or by impact hammering of a pile.
All these rigs rely on a crane and a drive, that is suspended by the crane. The drive is used to apply a driving force onto the foundation object, for example to rotate the auger, to subject the foundation object to vibrations, or to subject the foundation object to the impacts.
At present, these drives are typically hydraulic power packs, powered by a diesel engine, that are configured to supply pressurized hydraulic fluid to the drive. Furthermore, the diesel engine in the hydraulic power pack typically also drives the crane to perform auxiliary tasks, like manoeuvring of the crane.
However, the use of diesel engines inherently results in exhaust gas emissions that harm the environment. Furthermore, diesel power packs typically operate at fixed power output levels, at which the power packs have an optimal efficiency. However, this optimal output level may not necessarily correspond to the desired power demand from the drive, so that some of the hydraulic power may not be utilized after all.
Object of the invention
It is therefore an object of the invention to provide a piling or drilling rig that can operate more environmentally friendly and/or more efficiently for different modes of operation.
Detailed description
The present invention provides, according to a first aspect, a piling or drilling rig for driving a foundation object, for example an auger, a pile or sheet pile, in the ground, the rig comprising: - a piling or drilling drive, configured to apply a driving force onto the foundation object, - a crane, configured to suspend the drive, and
- a power source to provide power to the drive and to the crane, characterized in that, the power source comprises: - a main electric actuator, configured to provide power to the drive, - an auxiliary electric actuator, arranged in the crane and configured to provide power to the crane, for example to move the crane and/or to move the drive, - a main battery, connected to the main electric actuator and configured to supply the main electric actuator with electric energy, and - an auxiliary battery, arranged in the crane and connected to the auxiliary electric actuator and configured to supply the auxiliary electric actuator with electric energy.
The piling or drilling rig according to the present invention not merely replaces the diesel engine of the hydraulic power pack of the prior art rig with an electric motor. In fact, the present rig has two electric circuits that each comprise a battery and an actuator.
A main electric actuator is provided, which may exclusively be used to power the drive.
The main electric actuator may be included in the drive, to be able to directly apply the driving force on the foundation object with which the drive is associated. Alternatively, the main electric actuator may form part of a hydraulic power pack, that is able to power the drive via a hydraulic circuit.
In addition, an auxiliary electric actuator is present to perform the auxiliary tasks, such as the moving of the crane and moving of the drive, for example raising or lowering the drive and/or the foundation object. The presence of the auxiliary electric actuator may provide that the main electric actuator does not need to be used for the auxiliary tasks. For example when it is only needed to manoeuvre the crane, only a small amount of power is needed and only the auxiliary electric actuator needs to be activated. The main electric actuator may remain inactive, to improve the overall efficiency. The auxiliary electric actuator may be arranged in the crane, since most auxiliary tasks can be performed with the crane itself.
Similarly, the rig comprises dedicated batteries for each of the electric actuators, so that each of the electric actuators can be supplied with electric energy independently from each other. Even if, for example, the main battery is empty, the crane can still be manoeuvred with the auxiliary electric actuator with electric energy from the auxiliary battery. This may further improve the flexibility of the rig, being able to function without the main battery,
The auxiliary battery may be arranged in the crane, i.e. as a result of its association with the auxiliary electric actuator that can be arranged in the crane as well. The main battery may be provided separate from the crane, since the main battery may not be used to provide electric energy towards the crane, i.e. the auxiliary electric actuator.
More general, the rig according to the present invention is free of diesel engines, since it is powered by electric actuators only. The present rig thus has no emissions by itself and can operate more environmentally-friendly, compared to the existing rigs.
In an embodiment, the auxiliary battery is further connected to the main electric actuator and configured to supply the main electric actuator with electric energy.
According to this embodiment, the auxiliary battery is not only used to provide electric energy towards the auxiliary electric actuator, but also towards the main electric actuator.
This means that the drive can also be powered with the main electric actuator when the main battery is empty, but instead with electric energy from the auxiliary battery.
The rig may comprise an main electric circuit, that electrically interconnects the main electric actuator and the main battery. The main electric actuator may be connected to the auxiliary battery via a switching electric circuit, so that electric energy for the main electric actuator can be selectively obtained from the main battery and the auxiliary battery.
The battery voltage in the main battery may differ from the battery voltage in the auxiliary battery. The electric circuit may then comprise a voltage converter at the main battery and/or at the auxiliary battery, so that the voltage in the electric circuit can be selected independent of the battery voltages.
The batteries may operate at a DC voltage, for example a DC voltage in the range between 400 V an 800 V. The voltage converters may then be embodied as DC-converters, being configured to transform a DC battery voltage into a DC voltage in the electric circuit or vice versa. The main battery and the auxiliary battery not necessarily need to operate at the same battery, which may be selected depending on a required electric input or output for that battery.
In an embodiment, the main battery and/or the auxiliary battery comprises a plurality of battery modules, which can be charged and emptied independent of each other. Optionally, each of the battery modules may operate at a different voltage, if desired. The battery modules may be connected to the respective main electric circuit and/or auxiliary electric circuit in series or in parallel, depending on a required electric input or output.
In an embodiment, the main electric actuator is arranged in the drive, to directly apply the driving force to the foundation object.
The drive according to this embodiment comprises the main electric actuator, which implies that the drive may be free of hydraulic components. The rig may comprise an umbilical between the crane and the drive, but this umbilical may comprise electric cable only for supplying the electric energy towards the main electric actuator in the drive. The absence of hydraulic components in the drive may offer a more simple drive, only having electric components, compared to the existing hydraulic drives.
Furthermore, the transfer of the driving force from the actuator towards the foundation object can be more efficient in the absence of an hydraulic circuit. Furthermore, this embodiment may allow for improved feedback possibilities from the foundation object, for example by measuring the electric current fed towards the main electric actuator, since fewer losses are present in the absence of a hydraulic circuit between the actuator and the foundation object.
In an alternative embodiment, the main electric actuator is arranged in the crane and the rig further comprises: - a hydraulic motor in the drive, and - a hydraulic pump in the crane, connected to the main electric actuator and fluidly connected to the hydraulic motor via a hydraulic circuit, to indirectly apply the driving force to the foundation object via the hydraulic motor.
This alternative embodiment of the rig has the benefit that it is designed to resemble existing rigs, which may even allow existing piling or drilling rigs to be retrofitted with a main electric actuator, an auxiliary electric actuator and two batteries, to no longer rely on diesel engines.
The indirect supply of the drive may provide that the main electric actuator does not need to be located in the drive, which may allow the drive to be substantially free of electric actuators.
In an embodiment, the main electric actuator has a maximum power output that is larger than the maximum power output of the auxiliary electric actuator, preferably at least two times larger, for example about five times larger.
The power required for powering the drive with the main electric actuator may be significantly more than the power needed to perform the auxiliary tasks with the auxiliary electric actuator. To this effect, the maximum power output of the main electric actuator may be selected larger than that of the auxiliary electric actuator in accordance.
Furthermore, the difference in maximum power output may provide the benefit that each of the electric actuators can operate at an optional efficiency. Hence, the auxiliary electric actuator with the relatively low power output would be sufficient to perform the auxiliary tasks, without requiring the main electric actuator, i.e. being relatively inefficient at lower power outputs, to be used. The same applies when the drive of the rig is activated for driving the foundation object, since the auxiliary electric actuator may then be deactivated.
In an embodiment, the main battery has a maximum capacity that is larger than the maximum capacity of the auxiliary battery, preferably at least two times larger, for example about five times larger.
The difference in battery capacity may be beneficial especially where the maximum power output of the auxiliary electric actuator differs from that of the main electric actuator. As such, both electric actuators can be used for the same period of time, before their respective batteries are emptied.
For example, the maximum capacities of both batteries may be dimensioned to be sufficient for a day of work. The batteries can then be charged overnight to be ready for the next day, without being dimensioned unnecessarily large.
In an embodiment, the main battery is arranged at a rear end of the crane, i.e. opposite to the drive, configured to act as a counterweight for the drive and the foundation object.
According to this embodiment, the relatively large weight of the main battery, which is normally a drawback, finds a use in forming a counterweight for the drive and the foundation object that are typically suspended at the opposite, front end of the crane.
Optionally, the rig can be provided with a leader at the front end of the crane, from which the drive and the foundation object can be suspended. With the main battery provided at the rear end of the crane, the main battery can act as a counterweight for the leader as wel.
In an embodiment, the main battery is attached to the crane during use for driving a foundation object in the ground and removable from the crane during transportation of the crane.
During use of the rig, the main battery is arranged on the crane, allowing the main battery to be moved along with the drive, for example when the crane moves the drive to another working location. Furthermore, the main battery may be used beneficially as a counterweight for stabilizing the rig.
With the main battery being removable, the rig can be made more compact during transportation of the crane. This may make transportation of the crane more convenient, since overall size of the crane on a truck can be smaller. Furthermore, the absence of the main battery may significantly reduce the weight of the crane, further improving transportability, whereas the heavy main battery can be conveniently transported separate from the crane.
According to this embodiment, it is essential that that the auxiliary battery and the auxiliary electric actuator are arranged in the crane, to enable manoeuvring of the crane, for example when it is desired to move the crane on a truck or to move the crane to a working location. This may be done in the absence of the main battery, so that the main battery may only need to be arranged on the crane when the rig needs to be used to drive the foundation object in the ground.
In an embodiment, the auxiliary battery may be used for supplying electric energy to the drive as well, when it is needed to only drive a limited number of foundation objects in the ground, due to the limited capacity of the auxiliary battery.
In a further embodiment, the piling or drilling rig comprises a secured releasable electric connection between the main battery and the main electric actuator, configured to shut-off electric contact prior and during removal of the main battery from the crane.
The secured releasable electric connection may prevent short-circuiting of the connection, which could harm the main battery and the main electric actuator, but which also reduces the of short-circuiting of operators, offering improved safety.
The secured releasable electric connection may include a shut-off device, which is configured to shut-off any electric current between the main battery and main electric actuator in case it is desired to disconnect the main battery from the crane, to prevent overload current peaks from occurring during disconnection.
In an embodiment, the piling or drilling rig further comprises a grid connection, electrically connected to the electric actuators and/or the batteries and electrically connectable to an electricity grid, wherein the rig is configured to absorb electric energy from the electricity grid via the grid connection.
According to this embodiment, the rig can be supplied with electric energy from the grid during use, as soon as the electric connection with the grid is established. This means that it is not necessarily required to charge the batteries separately, although this still can be the case, but that the batteries may also remain on the crane during charging. The grid connection may be particularly beneficial when the rig is configured to work in substantially the same area for a longer period of time, since any cables used for establishing the grid connection will then not form any significant obstruction that hinders movements of the rig.
The electric energy from the grid may be fed into the batteries, but may alternatively or additionally be fed directly towards the main electric actuator and the auxiliary electric actuator. In the latter case, the rig may be actuated even in the absence of batteries, for example with the main battery removed from the crane. This may be beneficial in situations prior to or just after transport, when no main battery is yet arranged on the crane, or when it is desired to keep the rig as compact and/or light as possible, so that the relatively large and heavy main battery can be omitted temporarily for that job.
In a further embodiment, the rig is configured to charge the main battery and/or the auxiliary battery with the electric energy absorbed from the electricity grid, and/or the rig is configured to supply the main electric actuator and/or the auxiliary electric actuator with the electric energy absorbed from the electricity grid.
According to this embodiment, the electric energy obtained from the grid may be used to charge either one or both of the batteries, for example simultaneously. Furthermore, possibly also simultaneously, the electric energy from the grid may be used to power the actuators. This may provide the benefit that the rig only needs to be connected to the grid temporarily, for charging of the batteries. Meanwhile, during charging of the batteries, the rig may still be used for driving of the foundation object, since the main electric actuator and the auxiliary electric actuator can be powered simultaneously while charging the batteries.
In an embodiment, the crane comprises: - an undercarriage, for supporting and moving the rig, - a superstructure, rotatably arranged on the undercarriage and configured to support the drive, and - a leader, which is attached to the superstructure and which can be brought in an erected position, during use of the rig, and a substantially horizontal transport position, wherein the superstructure comprises a horizontal through slot to accommodate the leader in the transport position.
According to this embodiment, the superstructure is moved and supported by the undercarriage and, in turn, supports the leader. During use for driving foundation objects, the leader is in its erected position, which may be substantially upright or angled, in case it is desired to drive foundation objects in the ground at an angle.
The leader may be rotatably connected at a front end of the superstructure, to establish the tilting of the leader relative to the superstructure and the ground. When not in use, for example during transportation, the leader may be folded down into the transport position.
Here, the slot in the superstructure is used to accommodate the leader, so that the leader can be surrounded by the superstructure, instead of being arranged on top of it.
The horizontal through slot may extend through the superstructure in an elongate direction, i.e. between its front end and rear end. The slot may be adjoined by an operator cabin, compartment for the auxiliary electric actuator and/or the auxiliary battery, so that the leader is arranged in between those in the transport position.
During use, the main battery may be arranged behind the slot, at the rear end of the superstructure. During transport, however, the main battery is removed, so that the leader can protrude through towards the rear.
According to a second aspect, the present invention provides a method of driving a foundation object, for example an auger, a pile or sheet pile, in the ground, preferably by means of the piling or drilling rig as disclosed herein, for example as recited in the claims, comprising the steps of: - moving the foundation object to a desired position with the rig, - applying a driving force onto the foundation object with the drive, for example rotating the auger, vibrating the pile or the sheet pile or hammering the pile, to drive the foundation object in the ground, wherein the moving is powered by the auxiliary electric actuator with electric energy supplied from the auxiliary battery and/or from the electricity grid, and wherein the applying of the driving force is powered by the main electric actuator with electric energy supplied from the main battery and/or from the electricity grid.
The present driving method according to the second aspect may comprise one or more of the features and/or benefits disclosed herein in relation to the piling or drilling rig according to the first aspect of the present invention, in particular as recited in any of the claims.
According to the present method, a foundation object is brought in the ground to form a foundation. Several types of foundation objects may be used, for example an auger, a pile or a sheet pile. Nonetheless, the present method may be used as well for other types of foundation objects.
The method relies on the fact that the moving of the foundation object and the applying of the driving force is being done by different actuators and by using electric energy from different batteries. Hence, the present rig has two electric circuits that each comprise a battery and an actuator. The main electric actuator is provided to exclusively power the drive, in order to drive the foundation object in the ground. An auxiliary electric actuator is present to perform the auxiliary tasks, such as the moving the crane and moving the drive, for example raising or lowering the drive and/or the foundation object.
The presence of the auxiliary electric actuator may provide that the main electric actuator does not need to be used for the auxiliary tasks. For example when it is only needed to manoeuvre the crane, only a small amount of power is needed and only the auxiliary electric actuator needs to be activated.
The main electric actuator may remain inactive, to improve the overall efficiency. The auxiliary electric actuator may be arranged in the crane, since most auxiliary tasks can be performed with the crane itself.
Similarly, the rig comprises dedicated batteries for each of the electric actuators, so that each of the electric actuators can be supplied with electric energy independently from each other. Even if, for example, the main battery is empty, the crane can still be manoeuvred with the auxiliary electric actuator with electric energy from the auxiliary battery. This may further improve the flexibility of the rig, being able to function without the main battery.
According to a third aspect, the present invention provides a method of erecting a piling or drilling rig, preferably the piling or drilling rig as disclosed herein, for example as recited in the claims, the method comprising the steps of: - moving the rig to a working location, - moving the leader to the erected position, - attaching the main battery to the crane, - electrically connecting the main battery to the main electric actuator, and - optionally, connecting the rig to the electricity grid with the grid connection, wherein the moving of the rig and/or the moving of the leader is powered by the auxiliary electric actuator with electric energy supplied from the auxiliary battery.
The present method according to the third aspect may comprise one or more of the features and/or benefits disclosed herein in relation to the piling or drilling rig according to the first aspect of the present invention, in particular as recited in any of the claims.
During use of the rig, the main battery is arranged on the crane, allowing the main battery to be moved along with the drive, for example when the crane moves the drive to another working location. Furthermore, the main battery may be used beneficially as a counterweight for stabilizing the rig.
With the main battery being removable, the rig can be made more compact during transportation of the crane. This may make transportation of the crane more convenient, since overall size of the crane on a truck can be smaller. Furthermore, the absence of the main battery may significantly reduce the weight of the crane, further improving ftransportability, whereas the heavy main battery can be conveniently transported separate from the crane.
According to this aspect, it is essential that that the auxiliary battery and the auxiliary electric actuator are arranged in the crane, to enable manoeuvring of the crane, for example when it is desired to move the crane on a truck or to move the crane to a working location.
This may be done in the absence of the main battery, so that the main battery may only need to be arranged on the crane when the rig needs to be used to drive the foundation object in the ground.
In an embodiment, the auxiliary battery may be used for supplying electric energy to the drive as well, when it is needed to only drive a limited number of foundation objects in the ground, due to the limited capacity of the auxiliary battery.
Optionally, the leader may be arranged in a horizontal through slot of the superstructure of the crane in the transport position, prior to the step of moving the leader to the erected position. This may offer the benefit that the leader can be surrounded by the superstructure, instead of being arranged on top of it.
As an optional step, it may be possible to establish an electric connection between the rig and the grid, so that the rig can be supplied with electric energy from the grid during use.
The electric energy from the grid may be fed into the batteries, but may alternatively or additionally be fed directly towards the main electric actuator and the auxiliary electric actuator. In the latter case, the rig may be actuated even in the absence of batteries, for example with the main battery removed from the crane. This may be beneficial in situations prior to or just after transport, when no main battery is yet arranged on the crane.
According to a fourth aspect, the present invention provides a method of laying down a piling or drilling rig, preferably the piling or drilling rig as disclosed herein, for example as recited in the claims, the method comprising the steps of: - optionally, disconnecting the rig from the electricity grid, - electrically disconnecting the main battery from the main electric actuator, - removing the main battery from the crane, - moving the leader to the horizontal transport position, and - moving the rig away from the working location, wherein the moving of the rig and/or the moving of the leader is powered by the auxiliary electric actuator with electric energy supplied from the auxiliary battery.
The present method according to the fourth aspect may comprise one or more of the features and/or benefits disclosed herein in relation to the piling or drilling rig according to the first aspect of the present invention, in particular as recited in any of the claims.
During use of the rig, the main battery is arranged on the crane, allowing the main battery to be moved along with the drive, for example when the crane moves the drive to another working location. Furthermore, the main battery may be used beneficially as a counterweight for stabilizing the rig.
With the main battery being removable, the rig can be made more compact during transportation of the crane. This may make transportation of the crane more convenient, since overall size of the crane on a truck can be smaller. Furthermore, the absence of the main battery may significantly reduce the weight of the crane, further improving transportability, whereas the heavy main battery can be conveniently transported separate from the crane.
According to this aspect, it is essential that that the auxiliary battery and the auxiliary electric actuator are arranged in the crane, to enable manoeuvring of the crane, for example when it is desired to move the crane on a truck or to move the crane to a working location.
This may be done in the absence of the main battery, so that the main battery may only need to be arranged on the crane when the rig needs to be used to drive the foundation object in the ground.
In an embodiment, the auxiliary battery may be used for supplying electric energy to the drive as well, when it is needed to only drive a limited number of foundation objects in the ground, due to the limited capacity of the auxiliary battery.
Optionally, the leader may be arranged in a horizontal through slot of the superstructure of the crane in the transport position, prior to the step of moving the leader to the erected position. This may offer the benefit that the leader can be surrounded by the superstructure, instead of being arranged on top of it.
As an optional step, it may be possible to establish an electric connection between the rig and the grid, so that the rig can be supplied with electric energy from the grid during use.
The electric energy from the grid may be fed into the batteries, but may alternatively or additionally be fed directly towards the main electric actuator and the auxiliary electric actuator. In the latter case, the rig may be actuated even in the absence of batteries, for example with the main battery removed from the crane. This may be beneficial in situations prior to or just after transport, when no main battery is yet arranged on the crane.
Brief description of drawings
Further characteristics of the invention will be explained below, with reference to embodiments, which are displayed in the appended drawings, in which:
Figure 1 schematically depicts an embodiment of a piling or drilling rig according to the present invention, and
Figure 2 schematically depicts a functional layout of the rig in figure 1.
Throughout the figures, the same reference numerals are used to refer to corresponding components or to components that have a corresponding function.
Detailed description of embodiments
Figure 1 schematically depicts an embodiment of the piling or drilling rig according to the present invention, to which is referred with reference numeral 1. The rig 1 is configured to drive a foundation object 5 in the ground. In the present embodiment, the foundation object is a pile 5. Alternatively, the rig 1 may be used to insert other foundation objects, such as an auger or a sheet pile
The rig 1 comprises a crane, a drive 10 that is configured to apply a driving force onto the foundation object 5, and a power source to provide power to the drive 10 and to the crane.
The crane comprises an undercarriage 2, for supporting and moving the rig 1. A superstructure 3 of the crane is rotatably arranged on the undercarriage 2 and is configured to support a drive 10 of the rig 1. The drive 10 is suspended from a leader 4 of the crane, which is attached to the superstructure 3 and which can be brought in an erected position, as shown in figure 1, during use of the rig 1 for inserting the foundation object 5 in the ground.
The leader 4 can also be brought into a substantially horizontal transport position, in which the leader 4 is accommodated in a horizontal through slot in the superstructure 3.
The power source of the rig 1 comprises a main electric actuator 11, configured to provide power to the drive 10, and a main battery 12, configured to supply the main electric actuator 11 with electric energy. The main electric actuator 11 and the main battery 12 are electrically connected to each other via a main electric circuit 13.
The power source further comprises an auxiliary electric actuator 21, arranged in the superstructure 3 of the crane and configured to provide power to the crane, and an auxiliary battery 22, arranged in the superstructure 3 of the crane as well, and configured to supply the auxiliary electric actuator 21 with electric energy. The auxiliary electric actuator 21 and the auxiliary battery 22 are electrically connected to each other via an auxiliary electric circuit 23.
As an example, the auxiliary electric actuator 21 is configured to move the crane, e.g. to power the undercarriage 2, to rotate the superstructure 3 relative to the undercarriage 3, to move the leader 4 relative to the superstructure 3 and/or to move the drive 10 relative to the leader 4.
The present rig 1 thus has two electric circuits 13, 23 that each comprise a battery and an actuator. The main electric actuator 11 is exclusively used to power the drive 10. The presence of the distinct auxiliary electric actuator 21 may provide that the main electric actuator 11 does not need to be used for the auxiliary tasks. For example when it is only needed to manoeuvre the crane, only a small amount of power is needed and only the auxiliary electric actuator 21 needs to be activated. The main electric actuator 11 may remain inactive, to improve the overall efficiency.
The rig 1 similarly comprises dedicated batteries 12, 22 for each of the electric actuators 11, 21, so that each of the electric actuators 11, 21 can be supplied with electric energy independently from each other. Even if, for example, the main battery 12 is empty, the crane can still be manoeuvred with the auxiliary electric actuator 21 with electric energy from the auxiliary battery 22. This may further improve the flexibility of the rig 1, being able to function without the main battery 12.
It is best shown in figure 2 that the auxiliary battery 22 is further connected to the main electric actuator 11 and configured to supply the main electric actuator 11 with electric energy. The auxiliary battery 22 is thereby not only used to provide electric energy towards the auxiliary electric actuator 21, but also towards the main electric actuator 11. This means that the drive 10 can also be powered with the main electric actuator 11 when the main battery 12 is empty, i.e. with electric energy from the auxiliary battery 22. The main electric actuator 11 is connected to the auxiliary battery 22 via a switching electric circuit 24, so that electric energy for the main electric actuator 11 can be selectively obtained from the main battery 12 and the auxiliary battery 22.
Figure 2 schematically shows that the main electric actuator 11 has a maximum power output P that is larger than the maximum power output P’ of the auxiliary electric actuator 21, preferably at least two times larger, for example about five times larger. Furthermore, it is shown that the main battery 12 has a maximum capacity that is larger, i.e. it has a larger size, than the maximum capacity of the auxiliary battery 22, preferably at least two times larger, for example about five times larger.
In the embodiment of the rig 1 shown in figure 1, the main electric actuator 11 is arranged in the drive 10, to directly apply the driving force to the foundation object 5. The drive 10 can thereby be free of hydraulic components to offer a more simple drive 10, compared to the existing hydraulic drives.
Alternatively, however, the main electric actuator can be arranged in the crane and the rig can further comprise a hydraulic motor in the drive, and a hydraulic pump in the crane, connected to the main electric actuator and fluidly connected to the hydraulic motor via a hydraulic circuit, to indirectly apply the driving force to the foundation object via the hydraulic motor.
The rig 1 further comprises a grid connection 31, electrically connected to the batteries 12, 22 via a grid circuit 32 and electrically connectable to an electricity grid, so that the rig 1 can absorb electric energy from the electricity grid via the grid connection 31. This implies that the rig 1 can be supplied with electric energy from the grid during use and that it is not necessarily required to charge the batteries 12, 22 separately.
In the embodiment in figure 2, the electric energy from the grid is fed into the batteries 12, 22. The rig 1 is thereby configured to charge the main battery 12 and the auxiliary battery 22 with the electric energy absorbed from the electricity grid.
Alternatively, not shown in the figures, the electric energy from the grid may be fed directly towards the main electric actuator and the auxiliary electric actuator, so that the rig can even be actuated even in the absence of batteries.
The main battery 12 is arranged at a rear end of the superstructure 3, i.e. opposite to the drive 10 and the leader 4, to act as a counterweight for the drive 10, the leader 4 and the foundation object 5. Furthermore, the main battery 12 is removable from the superstructure 3 during transportation of the crane. With the main battery 12 being removable, the rig 1 can be made more compact and lighter during transportation of the crane, which may make transportation of the crane more convenient.
The auxiliary battery 22 and the auxiliary electric actuator 21 are arranged in the superstructure 3 of the crane, to enable manoeuvring of the crane with undercarriage 2, for example when it is desired to move the crane on a truck or to move the crane to a working location. This can then be done in the absence of the main battery 12.
Figure 2 shows that the rig 1 comprises a secured releasable electric connection 14 between the main battery 12 and the main electric actuator 11 and between the main battery 12 and the grid circuit 32, configured to shut-off electric contact with the main battery 12 prior and during removal of the main battery 12 from the superstructure 3. The secured releasable electric connection 14 may prevent short-circuiting of the connection, which could harm the main battery 12, the main electric actuator 11 and the grid connection 31. The secured releasable electric connection 14 includes a shut-off device, which is configured to shut-off any electric current between the main battery 12 and main electric actuator 11 or between the main battery 12 and the grid circuit 32 in case it is desired to disconnect the main battery 12 from the superstructure 3, to prevent overload current peaks from occurring during disconnection.

Claims (15)

CONCLUSIESCONCLUSIONS 1. Hei- of boorstelling voor het in de grond brengen van een funderingsobject, bijvoorbeeld een avegaar, een paal of damwand, de stelling omvattend: - een hei- of booraandrijving, geconfigureerd om een aandrijfkracht uit te oefenen op het funderingsobject, - een kraan, ingericht om de aandrijving te ondersteunen, en - een vermogensbron om de aandrijving en de kraan van stroom te voorzien, met het kenmerk dat, de vermogensbron omvat: - een elektrische hoofdactuator, ingericht om vermogen te verschaffen naar de aandrijving, - een elektrische hulpactuator, aangebracht in de kraan en ingericht om vermogen te verschaffen naar de kraan, bijvoorbeeld om de kraan te verplaatsen en/of om de aandrijving te verplaatsen, - een hoofdbatterij, verbonden met de elektrische hoofdactuator en ingericht om de elektrische hoofdactuator te voorzien van elektrische energie, en - een hulpbatterij, aangebracht in de kraan en verbonden met de elektrische hulpactuator en ingericht om de elektrische hulpactuator te voorzien van elektrische energie.1. Piling or drilling rig for driving a foundation object into the ground, for example an auger, a pile or sheet pile wall, the rig comprising: - a piling or drilling drive, configured to exert a driving force on the foundation object, - a crane , arranged to support the drive, and - a power source to provide power to the drive and the crane, characterized in that the power source comprises: - a main electric actuator, arranged to provide power to the drive, - an auxiliary electric actuator , fitted in the crane and designed to provide power to the crane, for example to move the crane and/or to move the drive, - a main battery, connected to the main electric actuator and designed to supply the main electric actuator with electric energy , and - an auxiliary battery, mounted in the crane and connected to the electric auxiliary actuator and designed to supply the electric auxiliary actuator with electrical energy. 2. Hei- of boorstelling volgens conclusie 1, waarbij de hulpbatterij verder is verbonden met de elektrische hoofdactuator en ingericht om de elektrische hoofdactuator te voorzien van elektrische energie.2. Piling or drilling rig according to claim 1, wherein the auxiliary battery is further connected to the electric main actuator and adapted to supply the electric main actuator with electrical energy. 3. Hei- of boorstelling volgens conclusie 1 of 2, waarbij de elektrische hoofdactuator is aangebracht in de aandrijving om de aandrijfkracht direct op het funderingsobject uit te oefenen.3. Piling or drilling rig according to claim 1 or 2, wherein the electric main actuator is arranged in the drive to exert the driving force directly on the foundation object. 4. Hei- of boorstelling volgens conclusie 1 of 2, waarbij de elektrische hoofdactuator in de kraan is aangebracht en waarbij de boorstelling verder omvat: - een hydraulische motor in de aandrijving, en - een hydraulische pomp in de kraan, verbonden met de elektrische hoofdactuator en via een hydraulisch circuit voor fluida verbonden met de hydraulische motor, om indirect via de hydraulische motor de aandrijfkracht op het funderingsobject uit te oefenen.4. Piling or drilling rig according to claim 1 or 2, wherein the electric main actuator is arranged in the crane and wherein the drilling rig further comprises: - a hydraulic motor in the drive, and - a hydraulic pump in the crane, connected to the electric main actuator and connected to the hydraulic motor via a hydraulic circuit for fluids, to exert the driving force on the foundation object indirectly via the hydraulic motor. 5. Hei- of boorstelling volgens een van de voorgaande conclusies, waarbij de elektrische hoofdactuator een maximaal vermogen heeft dat groter is dan het maximale vermogen van de elektrische hulpactuator, bij voorkeur ten minste twee keer groter, bijvoorbeeld ongeveer vijf keer groter.Piling or drilling rig according to any of the preceding claims, wherein the main electric actuator has a maximum power that is greater than the maximum power of the auxiliary electric actuator, preferably at least twice greater, for example approximately five times greater. 6. Hei- of boorstelling volgens een van de voorgaande conclusies, waarbij de hoofdbatterij een maximale capaciteit heeft die groter is dan de maximale capaciteit van de hulpbatterij, bij voorkeur ten minste twee keer groter, bijvoorbeeld ongeveer vijf keer groter.6. Piling or drilling rig according to any of the preceding claims, wherein the main battery has a maximum capacity that is greater than the maximum capacity of the auxiliary battery, preferably at least twice greater, for example approximately five times greater. 7. Hei- of boorstelling volgens een van de voorgaande conclusies, waarbij hoofdbatterij is aangebracht aan een achtereinde van de kraan, dat wil zeggen tegenover de aandrijving, ingericht om te fungeren als contragewicht voor de aandrijving en het funderingsobject.7. Piling or drilling rig according to any of the preceding claims, wherein the main battery is mounted at a rear end of the crane, i.e. opposite the drive, designed to function as a counterweight for the drive and the foundation object. 8. Hei- of boorstelling volgens een van de voorgaande conclusies, waarbij de hoofdbatterij tijdens gebruik voor het in de grond drijven van een funderingsobject is bevestigd aan de kraan en tijdens transport van de kraan van de kraan afneembaar is.8. Piling or drilling rig according to any of the preceding claims, wherein the main battery is attached to the crane during use for driving a foundation object into the ground and can be removed from the crane during transport of the crane. 9. Hei- of boorstelling volgens conclusie 8, verder omvattend een beveiligde losneembare elektrische verbinding tussen de hoofdbatterij en de elektrische hoofdactuator, ingericht om elektrisch contact uit te schakelen voorafgaand aan en tijdens het verwijderen van de hoofdbatterij van de kraan.9. Piling or drilling rig according to claim 8, further comprising a secured detachable electrical connection between the main battery and the main electric actuator, arranged to switch off electrical contact prior to and during removal of the main battery from the crane. 10. Hei of boorstelling volgens een van de voorgaande conclusies, verder omvattend een netaansluiting, elektrisch verbonden met de elektrische actuatoren en/of de batterijen en elektrisch verbindbaar met een elektriciteitsnet, waarbij de stelling is ingericht om via de netaansluiting elektrische energie op te nemen uit het elektriciteitsnet.10. Piling or drilling rig according to any of the preceding claims, further comprising a mains connection, electrically connected to the electric actuators and/or the batteries and electrically connectable to an electricity grid, wherein the rig is designed to absorb electrical energy from the mains via the mains connection. the electricity grid. 11. Hei of boorstelling volgens conclusie 10, ingericht om de hoofdbatterij en/of de hulpbatterij op te laden met de uit het elektriciteitsnet opgenomen elektrische energie, en/of ingericht om de elektrische hoofdactuator en/of de elektrische hulpactuator te voorzien van uit het elektriciteitsnet opgenomen elektrische energie.11. Piling rig or drilling rig according to claim 10, designed to charge the main battery and/or the auxiliary battery with the electrical energy drawn from the electricity grid, and/or designed to supply the main electric actuator and/or the auxiliary electric actuator with electricity from the electricity grid. absorbed electrical energy. 12. Hei of boorstelling volgens een van de voorgaande conclusies, waarbij de kraan omvat:12. Piling or drilling rig according to any of the preceding claims, wherein the crane comprises: - een onderstel, voor het ondersteunen en verplaatsen van de stelling, - een bovenbouw, roteerbaar aangebracht op het onderstel en ingericht om de aandrijving te ondersteunen, en - een makelaar, die is bevestigd aan de bovenbouw en die tijdens gebruik van de stelling in een opgerichte positie kan worden gebracht, en in een in hoofdzaak horizontale transportpositie, waarbij de bovenbouw een horizontale doorlopende sleuf omvat om de makelaar in de transportpositie op te nemen.- a base for supporting and moving the rack, - a superstructure, rotatably mounted on the base and designed to support the drive, and - a leader, which is attached to the superstructure and which is placed in a position during use of the rack erected position, and into a substantially horizontal transport position, wherein the superstructure comprises a horizontal continuous slot for receiving the leader in the transport position. 13. Werkwijze voor het in de grond brengen van een funderingsobject, bijvoorbeeld een avegaar, een paal of damwand door middel van de hei- of boorstelling volgens een van de voorgaande conclusies, omvattend de stappen van: - het met de stelling naar een gewenste positie bewegen van het funderingsobject, - het met de aandrijving een aandrijfkracht uitoefenen op het funderingsobject, bijvoorbeeld het draaien van de avegaar, het trillen van de paal of de damwand of het heien van de paal, om het funderingsobject in de grond te brengen, waarbij het bewegen wordt aangedreven door de elektrische hulpactuator met elektrische energie voorzien uit de hulpbatterij en/of het elektriciteitsnet, en waarbij het uitoefenen van de aandrijfkracht wordt aangedreven door de elektrische hoofdactuator met elektrische energie voorzien uit de hoofdbatterij en/of het elektriciteitsnet.13. Method for placing a foundation object, for example an auger, a pile or sheet pile wall, into the ground by means of the piling or drilling rig according to any of the preceding claims, comprising the steps of: - moving the rig to a desired position moving the foundation object, - exerting a driving force on the foundation object with the drive, for example rotating the auger, vibrating the pile or the sheet pile wall or driving the pile, to drive the foundation object into the ground, whereby it movement is driven by the electric auxiliary actuator with electric energy supplied from the auxiliary battery and/or the electricity grid, and whereby the exertion of the driving force is driven by the electric main actuator with electric energy supplied from the main battery and/or the electricity grid. 14. Werkwijze voor het opzetten van de hei- of boorstelling volgens een van de conclusies 1 — 12, omvattend de stappen van: - het naar een werklocatie bewegen van de stelling, - het naar de opgerichte positie bewegen van de makelaar, - het aan de kraan bevestigen van de hoofdbatterij, - het elektrisch met de elektrische hoofdactuator verbinden van de hoofdbatterij, en - optioneel, het met het elektriciteitsnet verbinden van de stelling met de netaansluiting, waarbij het bewegen van de stelling en/of het bewegen van de makelaar wordt aangedreven door de elektrische hulpactuator met elektrische energie voorzien uit de hulpbatterij.14. Method for setting up the piling or drilling rig according to any one of claims 1 - 12, comprising the steps of: - moving the rig to a working location, - moving the leader to the erected position, - attaching the main battery to the crane, - electrically connecting the main battery to the main electric actuator, and - optionally, connecting the rack to the mains connection with the electricity supply, whereby the movement of the rack and/or the movement of the leader is controlled. powered by the electric auxiliary actuator with electrical energy supplied from the auxiliary battery. 15. Werkwijze voor het afbreken van de hei- of boorstelling volgens een van de conclusies 1 — 12, omvattende de stappen van: - optioneel, het van het elektriciteitsnet loskoppelen van de stelling, - het elektrisch van de elektrische hoofdactuator loskoppelen van de hoofdbatterij,15. Method for dismantling the piling or drilling rig as claimed in any of the claims 1 - 12, comprising the steps of: - optionally disconnecting the rig from the electricity grid, - electrically disconnecting the main electric actuator from the main battery, - het van de kraan verwijderen van de hoofdaccu, - het naar de horizontale transportpositie bewegen van de makelaar, en - het weg van de werklocatie weg bewegen van de stelling, waarbij het bewegen van de stelling en/of het bewegen van de makelaar wordt aangedreven door de elektrische hulpactuator met elektrische energie voorzien uit de hulpbatterij.- removing the main battery from the crane, - moving the leader to the horizontal transport position, and - moving the scaffolding away from the work location, whereby the movement of the scaffold and/or the movement of the leader is driven supplied by the electric auxiliary actuator with electrical energy from the auxiliary battery.
NL2032960A 2022-09-06 2022-09-06 Electric piling or drilling rig NL2032960B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20010030U1 (en) * 1999-06-07 2000-11-23 VALLA S.p.A., Calendasco, Piacenza Mobile crane superstructure
EP1090874A1 (en) * 1999-10-06 2001-04-11 Atecs Mannesmann AG Mobile crane
JP2015040117A (en) * 2013-08-23 2015-03-02 アースピック株式会社 Battery-driven construction machine
DE102018110177A1 (en) * 2017-05-11 2018-11-15 AA Holding B.V. Drive device, seal for use in a drive device, and drilling rig, comprising a drive device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20010030U1 (en) * 1999-06-07 2000-11-23 VALLA S.p.A., Calendasco, Piacenza Mobile crane superstructure
EP1090874A1 (en) * 1999-10-06 2001-04-11 Atecs Mannesmann AG Mobile crane
JP2015040117A (en) * 2013-08-23 2015-03-02 アースピック株式会社 Battery-driven construction machine
DE102018110177A1 (en) * 2017-05-11 2018-11-15 AA Holding B.V. Drive device, seal for use in a drive device, and drilling rig, comprising a drive device

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