US20240240426A1 - Drilling machine having a grab-bucket chassis provided with a quick-release milling device - Google Patents

Drilling machine having a grab-bucket chassis provided with a quick-release milling device Download PDF

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Publication number
US20240240426A1
US20240240426A1 US18/557,712 US202218557712A US2024240426A1 US 20240240426 A1 US20240240426 A1 US 20240240426A1 US 202218557712 A US202218557712 A US 202218557712A US 2024240426 A1 US2024240426 A1 US 2024240426A1
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United States
Prior art keywords
support portion
arm
drilling machine
support
milling device
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US18/557,712
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English (en)
Inventor
Stéphane Binon
Michel COUDRY
Lionel ARFOULU
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Soletanche Freyssinet SA
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Soletanche Freyssinet SA
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Assigned to SOLETANCHE FREYSSINET reassignment SOLETANCHE FREYSSINET ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: Binon, Stéphane, ARFOULU, Lionel, COUDRY, Michel
Publication of US20240240426A1 publication Critical patent/US20240240426A1/en
Pending legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
    • E02F3/20—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with tools that only loosen the material, i.e. mill-type wheels
    • E02F3/205—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with tools that only loosen the material, i.e. mill-type wheels with a pair of digging wheels, e.g. slotting machines
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/13—Foundation slots or slits; Implements for making these slots or slits
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
    • E02F3/22—Component parts

Definitions

  • the present invention relates to the field of making excavations in the ground. It relates in particular to a drilling machine equipped with a milling device.
  • diaphragm wall clamshell grab which includes a grab frame at the lower end of which two buckets are mounted.
  • the grab frame includes a mechanism to open and close the buckets.
  • the actuation of the buckets can be achieved using hydraulic actuators.
  • the drilling tool is generally called “hydraulic grab”.
  • a grab frame comprises:
  • the movable member is movable in translation relative to the body along the longitudinal direction.
  • the displacement of the first arm relative to the body can be a rotational movement, a translational movement or a combination of a rotational movement and of a translational movement.
  • the buckets are carried by the frame and by the arms, which allow the opening and the closing of the buckets.
  • the buckets are opened and the grab is dropped into the dig. Then, the buckets are closed in order to collect the cuttings and the grab is pulled up.
  • a disadvantage of the drill bit is that its effectiveness decreases with each release due to the gradual accumulation of cuttings on the impact area, which has the effect of absorbing the impact shock of the drill bit. Also, the drill bit can break the hard ground only a few centimeters. Furthermore, this tooling is very slow because the method is to hit the hard area using the same material handler that allows the excavation, and this without any visibility of what is done, then pick up what has been broken using the grab.
  • the use of a drill bit has other disadvantages, in particular noise pollution and the generation of vibrations.
  • Another technique consists in using a hydromill.
  • the hydromill is equipped with rotatable cutting drums capable of excavating rock.
  • this technique is long to implement and particularly expensive.
  • this technique is sometimes difficult to implement on small-surface construction sites because the installation of the hydromill requires the presence of a grit trap which is particularly bulky.
  • One aim of the invention is to propose a drilling machine having a grab frame making it possible to facilitate the excavation of hard areas during the implementation of a clamshell grab drilling method.
  • the drilling machine according to the invention further includes:
  • the removable milling device can be easily mounted and dismounted, for example to replace the buckets, in particular when it is necessary to excavate a hard area of the ground. Once the hard area has been excavated, the operator dismounts the milling device to replace it with the buckets.
  • the invention makes it possible to dispense with the use of a drill bit or a hydromill to excavate a localized hard area. As explained above, the operator only needs to dismount the buckets and replace them with the removable milling device.
  • the first motor is hydraulic.
  • the support includes at least a first hydraulic junction box connected to the first motor.
  • the drilling machine includes at least one hydraulic line passing longitudinally through the grab frame in order to supply the first motor with hydraulic energy.
  • the first dismountable securing device includes a first part belonging to the body and a second part located on the removable milling device.
  • the first part of the first dismountable securing device is also configured to be connected to a first bucket, and more specifically to a first connection part of the first bucket.
  • the first part of the first dismountable securing device can be used to be fixed at the first bucket to the body or to be fixed at the removable milling device to the body.
  • the drilling machine according to the invention is modular since it can be used as a clamshell grab or milling machine depending on the tooling fixed to the frame.
  • the support includes:
  • the actuation of the actuator device has the effect of moving the first arm relative to the body. This displacement is directed along a direction perpendicular to the first rotation axis of the first mill drum.
  • the actuation of the actuator device makes it possible to deploy the first mill drum laterally relative to the frame.
  • the actuation of the actuator device has the effect of moving the second support portion with the first mill drum relative to the body of the frame.
  • One advantage is to be able to locally increase the length of the trench, considered in a horizontal plane. This also makes it possible to locally and transversely dig in the ground adjacent to the trench being drilled.
  • Another advantage is to be able to bite into the vertical end edge of one or two panels previously existing in the ground.
  • Yet another advantage is to be able to easily make a notched joint in the vertical edge.
  • the movable member is disposed above the first support portion.
  • the first hydraulic junction box is fixed to the second support portion.
  • first pivoting axis is separate and distant from the first rotation axis.
  • first pivoting axis is parallel to the first rotation axis.
  • the movable member is disposed above the first pivoting axis.
  • the retraction of the actuator device has the effect of pivoting the second support portion relative to the first support portion in a direction in which the first mill drum deploys transversely away from the body of the frame.
  • the deployment of the actuator device has the effect of bringing the first mill drum closer to the body of the frame.
  • the second dismountable securing device is located above the first pivoting axis.
  • the first dismountable securing device includes:
  • the first locking device is for example a key which is introduced into an orifice of the first fixing stud, above the plate, to hold the first support portion against the mounting element
  • the mounting element preferably includes a plate in which at least the first opening is formed.
  • the first dismountable securing device further includes:
  • the second locking device is for example a key which is introduced into an orifice of the second fixing stud, above the mounting element.
  • the first and second fixing studs preferably make it possible to block the first support portion relative to the mounting element.
  • the second dismountable securing device includes a first pivot element connected to the second support portion, and a first orifice formed at the lower end part of the first arm, the first pivot element being shaped to be engaged in the first orifice.
  • first pivot element and of the first orifice makes it possible to create a pivot-type hinge between the first arm and the second support portion.
  • This pivot link is preferably oriented along a first pivot axis parallel to the first pivoting axis.
  • the first orifice cooperates with the first bucket.
  • the first orifice of the first arm corresponds to the first part of the second dismountable securing device mentioned above.
  • the first arm moves relative to the body, which causes the pivoting of the second support portion relative to the body about the first pivoting axis.
  • the second support portion also pivots relative to the first arm about the first pivot axis.
  • the milling device further includes:
  • the milling device can include one or two mill drums, depending on the nature of the work to be performed.
  • the support further includes:
  • the distance between the first and second rotation axes of the first and second mill drums can be modified by actuating the actuator device.
  • the two mill drums can be spaced away from each other.
  • each of the mill drums can be deployed transversely relative to the frame, independently of each other.
  • the second motor is hydraulic and the third support portion further includes a second hydraulic junction box connected to the second motor.
  • the second pivoting axis is parallel to the second rotation axis of the second mill drum.
  • first and second pivoting axes are parallel.
  • first and second pivoting axes can be coincident.
  • the third dismountable securing device includes a second pivot element connected to the third support portion, and a second orifice formed at the lower end part of the second arm, the second pivot element being shaped to be engaged in the second orifice.
  • This pivot link is preferably oriented along a second pivot axis parallel to the second pivoting axis.
  • the actuator device includes a first actuator which is connected to the body and to the first arm.
  • the first actuator acts directly on the first arm.
  • the actuator device further includes a second actuator connected to the body and to the second arm to move the second arm relative to the body.
  • the first and second arms are pivotally mounted on each other about a connecting axis of the movable member.
  • the movable member forms a roller that can be moved in translation relative to the body along the longitudinal direction while being guided in translation by the oblong guide device in which it is housed.
  • the mobile member is preferably located in the body of the frame.
  • the actuator device may include a main actuator which is connected to the body and to the movable member to move the movable member relative to the body.
  • the first actuator acts directly on the movable member, which then acts on the first and second arms.
  • the invention also relates to a variable-geometry removable milling device for a grab frame, including:
  • first mounting member is intended to be fixed to a mounting element disposed at the lower end of the frame.
  • the second mounting member is configured to be fixed to a first arm of the grab frame, while the third mounting member is configured to be mounted on a second arm of the grab frame.
  • the milling device has a retracted position in which the distance between the first and second mill drums is minimal.
  • the second and third supports preferably bear against each other, which makes it possible to maintain a minimum spacing between the mill drums, in order to prevent them from coming into contact against each other, which could damage them.
  • the second support portion is pivotally fixed to the first support portion about a first pivoting axis
  • the third support portion is pivotally fixed to the first support portion about a second pivoting axis.
  • the pivoting amplitude of the second support portion is preferably comprised between 0 and 60°.
  • the first and second pivoting axes are parallel to the rotation axis of the first mill drum.
  • the first and second pivoting axes are coincident.
  • the second and third members for mounting on the frame are located above the first and second pivoting axes.
  • the second mounting member includes a first pivot element, which extends parallel to the first pivoting axis.
  • This first pivot element is configured to cooperate with a first orifice of the first arm of the grab frame.
  • the third mounting member includes a second pivot element, which extends parallel to the second pivoting axis.
  • This second pivot element is configured to cooperate with a second orifice of the second arm of the grab frame.
  • the first mounting member includes at least one fixing stud protruding from a board of the first support portion.
  • This fixing stud is configured to be engaged in a first opening of a mounting element of the body of the frame.
  • the first mounting member includes two fixing studs.
  • the first and second pivoting axes are located between the first and second pivot axes.
  • the milling device further includes a first locking device intended to cooperate with the first fixing stud.
  • the first motor is a hydraulic motor
  • at least the second support portion further includes a first hydraulic junction box connected to the first motor.
  • the second motor is also a hydraulic motor
  • the third support portion includes a second hydraulic junction box connected to the second motor.
  • the first and second hydraulic junction boxes are adapted to be connected to hydraulic hoses disposed in the grab frame.
  • One advantage is to prevent the mill drums from coming into contact with each other when the milling device is in the retracted position, which would be likely to damage them.
  • the second and third support portions are shaped to come into contact with each other when the milling device is in the retracted position, the abutment device being constituted by abutment faces disposed oppositely on each of the second and third support portions.
  • FIG. 1 is a front view of one embodiment of the drilling machine according to the invention.
  • FIG. 2 illustrates the machine of FIG. 1 , the milling device being dismounted from the frame
  • FIG. 3 is a front view of a first exemplary embodiment of the removable milling device according to the invention.
  • FIG. 4 is a detail view of the second mounting member according to section IV-IV;
  • FIG. 5 is a bottom view of the frame of the drilling machine of FIG. 1 ;
  • FIG. 6 is a perspective view of a second exemplary embodiment of the removable milling device, in the retracted position
  • FIG. 7 illustrates the milling device of FIG. 6 in the deployed position
  • FIG. 8 shows the drilling machine of FIG. 1 , in the trench bottom, with the milling device in the retracted position to drill a hard area;
  • FIG. 9 illustrates an example of use of the drilling machine of FIG. 1 to make local excavations in bars at different depths, the milling device being in the deployed position;
  • FIG. 10 shows an example of use of the drilling machine of FIG. 1 illustrating a step during which the milling device bites into the vertical edges of two adjacent panels;
  • FIG. 11 is a view taken in a horizontal plane, illustrating the bitten area during the step of FIG. 10 ;
  • FIG. 12 illustrates one variant of FIG. 11 , in which the panels are bitten over a fraction of their thickness so as to create a notched joint.
  • FIG. 1 illustrates a first embodiment of a drilling device 10 for making a trench in the ground.
  • the drilling machine 10 is suspended from the end of a mast of a carrier (not illustrated here).
  • the drilling machine 10 in this example includes a grab frame 12 which is suspended from the mast of the carrier by means of a suspension element 14 .
  • this suspension element is connected to a block 15 , which is itself fixed to a rotary joint 17 .
  • the grab frame 12 further includes a body 16 which extends along a longitudinal direction L between an upper end part 16 a and a lower end part 16 b.
  • the frame 12 moreover includes two guide modules 20 , 22 disposed on either side of the body 16 . These guide modules are intended to bear against the side walls of the trench in order to guide the vertical displacement of the drilling machine 10 .
  • the height of the guide modules is greater than that of the body.
  • the body 16 moreover includes a translational guide device 24 which is located substantially in the central part of the body.
  • the guide device 24 is in the form of a plate 26 in which an oblong opening 28 which extends along the longitudinal direction is formed. This translational guide device will be described in more detail below.
  • the grab frame 12 furthermore includes a movable member 32 which cooperates with the translational guide device 24 so that the movable member 32 can be moved relative to the body 16 along the longitudinal direction L.
  • the movable member 32 is disposed inside the body 16 .
  • the movable member 32 is in the form of a roller 33 which is slidably mounted, relative to the body, inside the oblong opening 28 along the longitudinal direction L.
  • the grab frame 12 furthermore includes a first arm 34 which has an upper end part 34 a connected to the movable member 32 so that the first arm 34 is pivotable relative to the movable member 32 about an axis X which is orthogonal to the longitudinal direction L.
  • the first arm moreover includes a lower end part 34 b , opposite to the upper end part 34 a.
  • the grab frame 12 moreover includes a second arm 36 which has an upper end part 36 a connected to the movable member 32 so that the second arm 36 is pivotable relative to the movable member 32 about an axis X which is orthogonal to the longitudinal direction L.
  • the second arm moreover includes a lower end part 36 b , opposite to the upper end part 36 a . It is therefore understood that the first and second arms 34 , 36 are also pivotable relative to each other about the axis X.
  • the grab frame 12 moreover includes an actuator device 37 comprising a first actuator 38 which, in this example, is pivotally connected to the body 16 by its first end 38 a , and is pivotally connected to the lower end part 34 b of the first arm 34 by its second end 38 b .
  • the first end 38 a is located in this example above the oblong opening.
  • the first actuator 38 makes it possible to move the first arm 34 relative to the body 16 .
  • the first actuator is a hydraulic cylinder.
  • the actuation of the first actuator 38 has the effect of pivoting the first arm relative to the body about the axis X while moving the first arm 34 along the longitudinal direction L.
  • the relative movement of the first arm 34 relative to the body 16 is the combination of a rotation about the axis X and of a translation along the longitudinal direction L.
  • the actuation device 37 further includes a second actuator 40 , which also constituted by a hydraulic cylinder.
  • the second actuator 40 includes a first end 40 a which is pivotally connected relative to the body 16 , and a second end 40 b which is pivotally connected to the second arm 36 to move the second arm 36 relative to the body 16 .
  • the actuation of the second actuator 40 has the effect of pivoting the second arm 40 relative to the body about the axis X, and also of moving the second arm 40 along the longitudinal direction L.
  • the displacement of the second arm 36 relative to the body 16 under the action of the second actuator 40 is a combination of a rotational movement about the connecting axis X and of a translational movement along the longitudinal direction L.
  • the drilling machine 10 further includes a removable milling device 100 which is mounted in the lower part of the grab frame 12 .
  • the removable milling device 100 can be easily and quickly dismounted from and mounted on the grab frame 12 . As explained above, the operator can easily and quickly mount the removable milling device 100 on the frame 12 after having dismounted the buckets of the grab which are traditionally fixed to the first and second arms 34 , 36 , as well as to the body 16 of the frame 12 .
  • the removable milling device 100 includes a first mill drum 102 which is rotatable about a first rotation axis A 1 .
  • the first mill drum 102 is driven in rotation about the first rotation axis A 1 by a first motor, not illustrated here, which is located inside the first mill drum 102 .
  • a first motor not illustrated here
  • Such a mounting, called “floating” mounting is known otherwise, and will not be described in more detail here.
  • the removable milling device 100 further includes a second mill drum 104 rotatable about a second rotation axis A 2 , parallel in this example to the first rotation axis A 1 .
  • the second mill drum 104 is driven in rotation by a second motor (not illustrated here), which is also disposed inside the second mill drum.
  • first and second motors could be disposed outside the first and second mill drums, above the first and second drums.
  • the first and second motors are hydraulic motors.
  • each of the first and second mill drums 102 , 104 consists of two half-drums carrying cutting tools 103 , which are fixed to holding plates 105 , 107 . These plates are crossed by hydraulic lines (not illustrated here) which are respectively connected to a first hydraulic junction box 106 and a second hydraulic junction box 108 , these hydraulic junction boxes being for their part connected to hydraulic hoses (not illustrated here) which extend into the frame which have the function of supplying the first and second motors with hydraulic energy.
  • the removable milling device 100 further includes a support 110 which carries the first mill drum 102 , the first motor, the second mill drum 104 and the second motor.
  • the support also carries the first and second hydraulic junction boxes 106 , 108 .
  • the drilling machine 10 further includes a first dismountable securing device 120 for removably fixing the support 110 to the lower end part 16 b of the body 16 .
  • the first dismountable securing device 120 includes a mounting element 122 belonging to the body of the frame 12 , and a first mounting member 124 belonging to the removable milling device 100 .
  • the mounting element 122 is disposed at the lower end of the body.
  • the mounting element is equipped with a first opening 126 and a second opening 128 which are formed in a plate 125 of the mounting element 123 .
  • the first dismountable securing device 120 further includes a first fixing stud 140 secured to the support 110 and shaped to engage in the first opening 126 , as well as a first locking device 142 , cooperating with the first fixing stud 140 to hold the support relative to the plate of the mounting element.
  • the first locking device 142 includes a first removable key which is shaped to pass transversely through the first fixing stud 140 , the key protruding on either side of the first fixing stud 140 .
  • the first dismountable securing device further includes a second fixing stud 144 , identical to the first fixing stud 140 , this second fixing stud 144 being secured to the support 110 and shaped to engage in the second opening 128 .
  • a second locking device 146 also in the form of a removable key cooperating with the second fixing stud to block the support relative to the plate of the mounting element.
  • the drilling machine further includes a second dismountable securing device 150 for removably fixing the support 110 to the lower end part 34 b of the first arm 34 .
  • the second dismountable securing device 150 includes a second member for mounting 152 on the frame which is disposed on the support 110 .
  • the second mounting member 152 includes a first pivot element 154 constituted by a bracket 154 a secured to the support and equipped with two orifices 154 b disposed oppositely and shaped to receive a removable fixing bolt 154 c.
  • the second dismountable securing device 150 further includes a first orifice 160 formed at the lower end part 34 b of the first arm 34 .
  • first orifice 160 formed at the lower end part 34 b of the first arm 34 .
  • the drilling machine further includes a third dismountable securing device 151 for removably fixing the support 110 to the lower end part 36 b of the second arm 36 .
  • the third dismountable securing device 151 includes a third member for mounting 156 on the frame which is disposed on the support.
  • the third mounting member 156 includes a second pivot element 162 , similar to first pivot element 154 .
  • the second pivot element 162 is constituted by a bracket 162 a secured to the support.
  • the bracket 162 a is equipped with two orifices disposed oppositely and shaped to receive a fixing bolt 162 b .
  • the second dismountable securing device further includes a second orifice 164 formed at the lower end part 36 b of the second arm 36 . When the milling device is mounted on the frame, the lower end of the second arm is engaged in the bracket 162 a and the fixing bolt 162 b of the second pivot element 162 is engaged in the second orifice 164 .
  • the second pivot element 162 can be easily removed from the third mounting member 156 in order to quickly dismount the support 110 from the second arm 36 .
  • the milling device can be easily and quickly mounted on and dismounted from the frame.
  • the removable milling device 100 is of variable geometry.
  • the milling device of FIGS. 6 and 7 differs from the first exemplary embodiment of FIG. 3 in that the first and second mill drums 102 , 104 can be spaced apart from each other.
  • the support 110 includes a first support portion 200 and a second support portion 202 which is movable relative to the first support portion 200 , so that the first mill drum 102 can be moved transversely relative to the body of the frame.
  • the first mill drum 102 and the first motor are carried by the second support portion 202 .
  • the first hydraulic junction box 106 is fixed to the second support portion 202 .
  • the second support portion 202 is pivotally fixed to the first support portion 200 about a first pivoting axis B 1 . It can be seen that this first pivoting axis B 1 is parallel to the first rotation axis A 1 of the first mill drum 102 .
  • the first pivoting axis B 1 is disposed between the first and second rotation axes A 1 , A 2 of the first and second mill drums 102 , 104 .
  • the first dismountable securing device 120 is configured to removably fix the first support portion 200 to the body 16 .
  • the first dismountable securing device 120 includes the first mounting member aforementioned which is equipped with the first and second fixing studs 140 , 144 and with the first and second locking devices 142 , 146 previously described.
  • the second dismountable securing device 150 is configured to removably fix the second support portion 202 to the lower end part 34 b of the first arm 34 , whereby the actuation of the actuator device has the effect of moving the first mill drum 102 relative to the frame.
  • the actuation of the first actuator of the actuator device has the effect of pivoting the first mill drum 102 relative to the frame about the first pivoting axis B 1 .
  • the second dismountable securing device 150 includes a second mounting member 152 comprising a first pivot element 154 belonging to the second support portion.
  • the second dismountable securing device further comprises a first orifice 160 formed in the lower end part 34 b of the first arm 34 .
  • the first pivot element 154 is shaped to be engaged in the first orifice 160 .
  • the second support portion 202 is pivotally fixed to the first arm 34 about a pivot axis C 1 which is parallel to the first pivoting axis B 1 .
  • the second dismountable securing device 150 is located above the first pivoting axis B 1 .
  • the drilling machine further includes a third support portion 204 which is pivotally fixed to the first support portion 200 about a second pivoting axis C 2 .
  • the second mill drum 104 and the second motor are carried by the third support portion 204 .
  • the third dismountable securing device 151 is configured to removably fix the third support portion 204 to the lower end part 36 b of the second arm 36 .
  • the third support portion 204 is pivotally mounted on the second arm 36 about a second pivot axis C 2 which is parallel to the first pivot axis C 1 , and to the second pivoting axis B 2 .
  • FIG. 6 illustrates the variable-geometry milling device in the retracted position
  • FIG. 7 shows it in the depolyed position.
  • the distance between the first and second rotation axes A 1 , A 2 is minimal.
  • the gap between the first and second mill drums is minimal, on the order of a few centimeters.
  • the passage between the retracted position and the deployed position is made by rotation of the second and third support portions about the first and second pivoting axes B 1 , B 2 .
  • the deployment is obtained by retraction of the first and second actuators 38 , 40 .
  • the milling device includes an abutment device 230 for maintaining a minimum gap between the first and second mill drums 102 , 104 .
  • This abutment device 230 makes it possible to ensure a minimum distance between the rotation axes A 1 and A 2 of the first and second mill drums 102 , 104 when the milling device is in the retracted position.
  • the abutment device 230 includes a first abutment face 232 on the second support portion 202 and a second abutment face 234 on the third support portion 204 .
  • the abutment faces 232 and 234 come into contact with each other in order to maintain a minimum spacing between the first and second rotation axes of the first and second mill drums 102 , 104 so that these do not touch each other.
  • first and second pivoting axes B 1 , B 2 are located between the first and second pivot axes C 1 , C 2 .
  • first rotation axis A 1 is located between the first pivot axis C 1 and the first pivoting axis B 1
  • second rotation axis A 2 is located between the second pivoting axis B 2 and the second pivot axis C 2 .
  • first and second pivot axes C 1 , C 2 are located above the first and second pivoting axes B 1 , B 2 , while the first and second rotation axes A 1 , A 2 are located below the first and second pivoting axes B 1 , B 2 .
  • FIG. 8 illustrates the drilling machine according to the second embodiment during the excavation of a hard area K of the ground, the drums being in the retracted position.
  • FIG. 9 illustrates the drilling machine 10 according to the invention in which the variable geometry drilling device is in the deployed position, which makes it possible to excavate cavities E in the ground on either side of the trench being excavated.
  • the drilling machine 10 is used to bite into the vertical edges 300 a , 302 a of two primary panels 300 , 302 disposed on either side of the machine.
  • the milling device After having excavated a trench between the two primary panels using the drilling machine 10 , the milling device then being in the retracted position, the milling device is brought into the deployed position and the drilling machine 10 is pulled up so as to bite into the primary panels over a depth p, this depth being considered along a horizontal direction.
  • FIG. 11 illustrates a horizontal section of the drilling, the vertical edges 300 a , 300 b of the panels are bitten over the entire thickness e of the panels.
  • the bitten areas are referenced 304 , 306 .
  • FIG. 12 which illustrates a variant of the drilling illustrated in FIG. 11
  • the vertical edges 300 a , 300 b of the panels are bitten over a fraction of the thickness e of the panels.
  • the bitten areas are referenced 306 , 308 , and form a notched joint.
  • the width of the mill drums will be adapted to the desired width of the notched joints.

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US18/557,712 2021-04-28 2022-04-20 Drilling machine having a grab-bucket chassis provided with a quick-release milling device Pending US20240240426A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FRFR2104450 2021-04-28
FR2104450A FR3122448B1 (fr) 2021-04-28 2021-04-28 Machine de forage ayant un châssis de benne preneuse muni d’un dispositif de fraisage à démontage rapide
PCT/EP2022/060453 WO2022228974A1 (fr) 2021-04-28 2022-04-20 Machine de forage ayant un châssis de benne preneuse muni d'un dispositif de fraisage à démontage rapide

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EP (1) EP4330467A1 (enExample)
JP (1) JP2024515321A (enExample)
KR (1) KR20240004713A (enExample)
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FR3158525B1 (fr) * 2024-01-18 2026-03-06 Soletanche Freyssinet Tête de coupe pour machine d’excavation, et machine d'excavation correspondante
DE102024107099A1 (de) * 2024-03-13 2025-09-18 Liebherr-Werk Nenzing Gmbh Bodenbearbeitungsgerät, insbesondere Schlitzwandfräse

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US20060032096A1 (en) * 2004-08-12 2006-02-16 Erwin Stoetzer Cutter and method for working the soil
EP1715106A1 (en) * 2005-04-23 2006-10-25 Caterpillar Work Tools B. V. Mobile milling machine

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JPH06128960A (ja) * 1992-10-15 1994-05-10 Ohbayashi Corp 変断面地中壁用掘削装置
FR2856088B1 (fr) * 2003-06-11 2005-09-09 Cie Du Sol Outil de fraisage pour la realisation de tranchees, permettant un changement rapide de la tete de coupe
EP1703023B1 (de) * 2005-03-18 2011-06-22 BAUER Maschinen GmbH Tiefbauvorrichtung zum Herstellen von Schlitzen im Boden mit Lenk- und Steuereinrichtung
FR2944300B1 (fr) * 2009-04-10 2011-06-10 Marais Contracting Services Engin motorise pour creuser une tranchee dans le sol et poser, dans celle-ci, des objets allonges
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EP1715106A1 (en) * 2005-04-23 2006-10-25 Caterpillar Work Tools B. V. Mobile milling machine

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JP2024515321A (ja) 2024-04-08
FR3122448A1 (fr) 2022-11-04
EP4330467A1 (fr) 2024-03-06
CN117295863A (zh) 2023-12-26
FR3122448B1 (fr) 2024-06-28
WO2022228974A1 (fr) 2022-11-03
KR20240004713A (ko) 2024-01-11

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