WO2010046757A1 - Self-propelled drilling machine for core sampling - Google Patents

Self-propelled drilling machine for core sampling Download PDF

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Publication number
WO2010046757A1
WO2010046757A1 PCT/IB2009/007179 IB2009007179W WO2010046757A1 WO 2010046757 A1 WO2010046757 A1 WO 2010046757A1 IB 2009007179 W IB2009007179 W IB 2009007179W WO 2010046757 A1 WO2010046757 A1 WO 2010046757A1
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WO
WIPO (PCT)
Prior art keywords
drilling
mast
machine
axis
self
Prior art date
Application number
PCT/IB2009/007179
Other languages
French (fr)
Inventor
Benito Fracca
Vittorio Fracca
Igor Visentini
Cristian Chieregati
Original Assignee
Fraste S.P.A.
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 Fraste S.P.A. filed Critical Fraste S.P.A.
Publication of WO2010046757A1 publication Critical patent/WO2010046757A1/en

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Classifications

    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
    • E21B7/023—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting the mast being foldable or telescopically retractable
    • 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
    • E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
    • 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
    • E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
    • E21B25/005—Above ground means for handling the core, e.g. for extracting the core from the core barrel
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/04—Directional drilling

Definitions

  • the present invention relates to a self -propelled drilling machine for core sampling.
  • the present invention relates to a self-propelled drilling machine for deep ground core sampling, to which the following description refers purely by way of example.
  • self-propelled drilling machines usually comprise a normally rectangular, self-propelled platform normally mounted on tracks and equipped with telescopic stabilizers; a straight supporting post, traditionally called mast, hinged to a lateral edge of the platform to rotate about a horizontal hinge axis perpendicular to the longitudinal axis of the mast; and a hydraulic actuating device for moving the mast, on command, between a fully lowered position, in which the mast rests on the platform with its longitudinal axis substantially horizontal, i.e. parallel to the ground and/or to the platform, and a work position, in which the bottom end of the mast rests on or close to the ground, with the mast at a given angle, normally of 5- 90°, with respect to the ground.
  • Self-propelled drilling machines of the above type also comprise a hydraulic driving head and a hydraulic clamp locking assembly, both fixed, in line with each other, to the mast.
  • the driving head is fitted to the mast to move parallel to the longitudinal mast axis, and is equipped with a rotary rod-holding chuck facing the bottom end of the mast and extending coaxially with a reference axis locally parallel to and at a distance from the longitudinal mast axis.
  • the chuck reference axis defines the drilling axis of the machine, and the chuck is designed to rigidly, but releasably, engage the top end of a tubular drilling rod, positioned beforehand alongside the mast and coaxial with the drilling axis, and to rotate the drilling rod about its longitudinal axis locally coincident with the drilling axis of the machine .
  • the clamp locking assembly is located at the bottom end of the mast, in line with the driving head, and is designed to grip, on command, the body of a drilling rod which rises from the ground coaxially with the drilling axis of the machine, to prevent rotation of the drilling rod about its longitudinal axis.
  • Self-propelled deep ground core-sampling drilling machines also comprise a hydraulic winch structured for rapidly hoisting to the surface a coring tool or so- called core barrel, which is fired deep into the ground inside the shaft formed by the drilling column.
  • the hydraulic winch comprises a number of idler pulleys at the top end of the mast, so the steel cable hangs over the drilling rod which rises from the ground coaxially with the drilling axis of the machine; and a hitch member which is fixed to the end of the steel cable and is structured to automatically engage the rear of the core ' barrel .
  • the core barrel is usually dropped by gravity into the shaft formed by the drilling column, so as to sink into the ground at the bottom of the shaft and retain a sample of earth inside it; and the hitch member fixed to the end of the winch cable is lowered into the shaft immediately after the core barrel, to automatically engage the rear of the core barrel resting on the bottom of the shaft.
  • the core barrel is no longer adequately supported by the steel cable of the winch, and must be harnessed rapidly by the crew - often by jury-rigged means - as it is hoisted out of the drilling rod projecting from the ground, to prevent it from striking the mast as it is comes out.
  • the core barrel in fact, weighs several hundred kilos, and, in the event of it striking the mast, could cause structural damage to the drill and/or fallout of the core, not to mention serious injury to any crew members working in the vicinity of the mast.
  • Aim of the present invention is to provide a self- propelled drilling machine for core sampling which is able to obviate to the above drawbacks .
  • a self-propelled drilling machine for core sampling as defined in Claim 1 and preferably, though not necessarily, in any one of the dependent Claims .
  • FIG. 1 shows a view in perspective, with parts removed for clarity, of a self-propelled drilling machine for core sampling realized in accordance with the teachings of the present invention
  • FIG. 2 shows a side view, with parts removed for clarity, of the self-propelled drilling machine in Figure 1 ;
  • Figure 3 shows a partly sectioned view in perspective, with parts removed for clarity, of the rear of the self-propelled drilling machine in Figures 1 and 2; - Figures 4, 5 and 6 show side views, with parts removed for clarity, of the rear of the Figure 1 and 2 self-propelled drilling machine in three different operating configurations.
  • BEST MODE FOR CARRYING OUT THE INVENTION With reference to Figures 1, 2 and 3, number 1 indicates as a whole a self-propelled drilling machine particularly suitable for deep ground core sampling.
  • the self-propelled drilling machine 1 substantially comprises a self-propelled platform 2, which is preferably, though not necessarily, rectangular, and preferably, though not necessarily, mounted on hydraulic tracks 3 and equipped with retractable hydraulic stabilizers 4; a straight supporting mast 5 hinged to a lateral edge of platform 2 to rotate about a substantially horizontal hinge axis A, i.e. parallel to platform 2 and locally substantially perpendicular to the longitudinal axis L of the mast; and a preferably, though not necessarily, hydraulic mast actuating device 6 for moving mast 5, on command, between a fully lowered position (shown by the dash line in Figure 2), in which mast 5 rests on platform 2 with its longitudinal axis L substantially horizontal, i.e.
  • mast 5 lies and is movable in a vertical reference plane (parallel to the Figure 2 plane) locally perpendicular to axis A and to the plane of platform 2.
  • tiltable mast 5 is mounted to slide axially on a supporting slide 7, which is hinged to a fork, projecting upwards from the top face and a short lateral edge of platform 2, to oscillate/rock freely about a horizontal hinge axis A locally parallel to the plane and the short lateral edge of platform 2.
  • mast actuating device 6 also comprises at least one first hydraulic cylinder 8 (two side by side hydraulic cylinders in the example shown) for controlling the slide tilt angle and interposed between platform 2 and slide 7 to adjust, on command, the tilt angle of slide 7 and mast 5 with respect to platform 2; and at least one second hydraulic cylinder (not shown) for controlling travel of the mast and interposed between slide 7 and mast 5 to move mast 5, on command, along the body of slide 7 and parallel to longitudinal axis L.
  • first hydraulic cylinder 8 two side by side hydraulic cylinders in the example shown
  • second hydraulic cylinder for controlling travel of the mast and interposed between slide 7 and mast 5 to move mast 5, on command, along the body of slide 7 and parallel to longitudinal axis L.
  • mast 5 may be fixed rigidly to rocking slide 7; in which case, actuating device 6 obviously has no second hydraulic cylinder, and mast 5 simply rotates about axis A in the vertical reference plane.
  • self-propelled drilling machine 1 also comprises a drilling-rod driving head 9 fitted to one side of mast 5 to move parallel to longitudinal mast axis L; an actuator (not shown) for moving driving head 9, on command, along mast 5 to adjust the distance between the driving head and the bottom end 5a of the mast; and a drilling-rod clamp locking assembly 10 fixed rigidly to bottom end 5a of mast 5 and aligned with driving head 9.
  • Driving head 9 comprises a rotary rod-holding chuck 9a facing the locking assembly 10, i.e. facing bottom end 5a of mast 5, and extending coaxially with a reference axis locally parallel to and at a distance from longitudinal mast axis L; and a preferably, though not necessarily, hydraulic drive motor (not shown) connected to and for rotating drilling rod-holding chuck 9a about said reference axis.
  • the chuck reference axis is coincident with the drilling axis R of the machine, and rod-holding chuck 9a is designed to rigidly, but releasably, engage the top end of a known tubular drilling rod 11 extending coaxially with drilling axis R, close to mast 5.
  • driving head 9 is fitted to mast 5 to move along drilling axis R of the machine, and rod- holding chuck 9a is designed to first grip and then rotate about its longitudinal axis a drilling rod 11 projecting from the ground coaxially with drilling axis R.
  • Locking assembly 10 comprises two preferably, though not necessarily, hydraulic jaws, which project from bottom end 5a of mast 5, on opposite sides of drilling axis R, and are designed, on command, to grip the body of drilling rod 11 projecting from the ground coaxially with drilling axis R, to prevent rod 11 from rotating about its longitudinal axis.
  • self-propelled drilling machine 1 preferably, though not necessarily, also comprises an internal rod. store 12 on platform 2, for storing a predetermined number of tubular drilling rods 11' stacked substantially horizontally; and a rod loading arm 13 fitted movably to platform 2 to grip a drilling rod 11' stowed in rod store 12, and position rod 11' alongside mast 5, with the longitudinal axis of the rod parallel to and either at a distance from or substantially coincident with drilling axis R.
  • rod store More specifically, in the example shown, rod store
  • rod loading arm 13 is fitted to platform 2 to swing - parallel to the vertical operating plane (Figure 2) of mast 5 - between a pickup position ( Figure 1) in which rod loading arm 13 extends substantially horizontally inside rod store 12 to enable the gripping assembly 13a fixed to the end of the arm to grip a drilling rod 11' stowed in the store, and a delivery position (not shown) in which rod loading arm
  • rod loading arm 13 substantially comprises a substantially L- shaped supporting beam 14 which lies in a plane substantially parallel to the vertical operating plane ( Figure 2) of mast 5, and which has the distal end of the shorter leg of the beam hinged to the top of a mount 15 projecting upwards from platform 2, alongside the fork supporting slide 7 of actuating device 6, so that beam 14 can rotate, with respect to mount 15, about a hinge axis B parallel to and preferably, though not necessarily, coincident with hinge axis A of mast 5.
  • Rod loading arm 13 also comprises a rocking beam 16 hinged to the far end of the longer leg of beam 14 to rock freely about an axis C locally parallel to axis B; two gripping members 17 located at opposite ends of beam 16 and designed, on command, to grip and firmly retain a drilling rod 11, II 1 ; and at least one double-acting hydraulic cylinder 18 interposed between beam 14 and mount 15 to adjust the angle of beam 14 with respect to the vertical.
  • Rocking beam 16 and the two gripping members 17 form the gripper assembly 13a of rod loading arm 13.
  • the longer leg of beam 14 may comprise two straight, telescopic sections; in which case, rod loading arm 13 also comprises a second double- acting hydraulic cylinder interposed between the two sections to move one section axially with respect to the other to adjust the overall length of the longer leg of beam 14 .
  • self-propelled drilling machine 1 also comprises a recovery winch 19 for engaging and rapidly bringing a known coring tool 20 - hereinafter referred to as a core barrel - to the surface from a predetermined depth inside the shaft formed by the column of drilling rods 11 driven into the ground .
  • winch 19 comprises a preferably, though not necessarily, hydraulic cable- winding assembly 21 located roughly in the centre of platform 2; a number of cable guide pulleys 22 hinged to rotate freely on the top end of mast 5, and engaged by a cable 21a arriving from the cable-winding assembly 21; and a hitch member 23 fixed to the end of cable 21a hanging from the top end of mast 5, and designed to automatically engage the rear of core barrel 20 resting on the bottom of the shaft formed by the column of drilling rods 11 in the ground.
  • Core barrel 20, cable-winding assembly 21, and hitch member 23 are commonly used devices, and therefore not described in detail.
  • self-propelled drilling machine 1 also comprises a preferably, though not necessarily, hydraulic articulated arm 25, which is located at bottom end 5a of mast 5, is fitted on the end with a gripper assembly 26 comprising at least one gripping member capable of gripping and firmly retaining the body of a core barrel 20, and which is structured so as to be able to, in sequence, :
  • articulated arm 25 projects from locking assembly 10, and substantially comprises a number of supporting beams or segments 27 hinged end to end to rotate about respective hinge axes preferably, though not necessarily, parallel or perpendicular to axis A and to longitudinal mast axis L; and a number of double-acting hydraulic cylinders 28, each interposed between two consecutive supporting segments 27, to adjust the angle of supporting segments 27 with respect to one another.
  • Gripper assembly 26 is fixed to the last supporting segment 27, and comprises two independent, parallel and abreast gripping members, which translate, parallel to themselves at all times, with respect to each other to adjust the distance between them.
  • a first of the two gripping members is designed, on command, to grip and firmly retain the cylindrical body of core barrel 20; while a second of the two gripping members is designed, on command, to either simply surround or grip and firmly retain the cylindrical body of core barrel 20.
  • articulated arm 25 comprises a first supporting bar 27a, which is hinged to the end of a rigid frame 29 projecting from clamp 10, to rotate with respect to frame 29 about a hinge axis Di locally parallel to longitudinal axis L of mast 5, and extends and swings freely in a plane locally perpendicular to hinge axis D 1 and longitudinal mast axis L; a second supporting bar 27b which is hinged to the far end of bar 27a to rotate, with respect to bar 27a, about a hinge axis D 2 locally perpendicular to longitudinal axis L of mast 5 and parallel to the plane of bar 27a, and extends and swings freely in a plane locally parallel to longitudinal axis L of mast 5 and locally perpendicular to hinge axis D 2 ; and a third supporting bar 27c shorter than first and second bars, and which is hinged to the far end of bar 27b to rotate, with respect to bar 27b, about a hinge axis D 3 locally parallel to hinge axis
  • gripper assembly 26 is fixed to and projects from the far end of bar 27c, and substantially comprises two straight, telescopic box beams or section bars 30, 31; a first preferably, though not necessarily, hydraulic actuating device (not shown) , such as a double-acting hydraulic cylinder, for moving box-like section bars 30, 31 axially, with respect to each other, between a withdrawn position ( Figures 3, 4), in which the inner box- like section bar 31 is housed almost entirely inside the outer box- like section bar
  • At least one of gripping members , 33 is fixed to box- like section bars 30, 31 to slide, parallel to itself, in a direction parallel to longitudinal axis F of the two sections; and gripper assembly 26 comprises a second preferably, though not necessarily, hydraulic actuating device (not shown) for moving said gripping member 32, 33, on command, parallel to longitudinal axis F of the two sections, to adjust the distance between gripping members 32 and 33.
  • gripping member 32 is fixed rigidly to inner box- like section bar 31, preferably, though not necessarily, close to the near end of the section (i.e. the end permanently inserted inside outer box- like section bar 30) , and projects from outer box-like section bar 30 through a longitudinal opening 30a in the body of outer box-like section bar 30.
  • Gripping member 33 is fixed to inner box-like section bar 31, alongside gripping member 32, with the possibility of moving along the side of the same inner box- like section bar 31 in a direction parallel to the longitudinal axis F, and engaging in sliding manner the longitudinal opening 30a realized in the outer box-like section bar 30, roughly up to the far end of the inner box-like section 31 (i.e. the end that projects from outer box-like section bar 30); and the second actuating device (e.g. a double-acting hydraulic cylinder) moves gripping member 33 along inner box- like section bar 31 to adjust the distance between gripping members 32 and 33 on command.
  • the second actuating device e.g. a double-acting
  • gripping member 32 is designed, on command, to either grip and firmly retain the cylindrical body of core barrel 20 ( Figures 2, 4, 5, 6) to prevent core barrel 20 from moving with respect to the gripping member, or to simply surround the cylindrical body of core barrel 20 ( Figure 4) and permit axial movement of core barrel 20 with respect to the gripping member; and gripping member 33 is designed, on command, to grip and firmly retain the cylindrical body of core barrel 20 ( Figures 2, 4, 5, 6) to prevent core barrel 20 from moving with respect to the gripping member .
  • outer box- like section bar 30 is fixed to the far. end of bar 27c, so that longitudinal axis F of the two sections is locally perpendicular to hinge axis D 3 .
  • outer box-like section bar 30 is preferably, though not necessarily, fixed to the far end of bar 27c by a hinge 36 fitted to the opposite side of outer box-like section bar 30 from gripping members 32 and 33, to allow box-like section bars 30, 31 to rotate, with respect to bar 27c, about a hinge axis E parallel to longitudinal axis F of the box- like section bars and locally perpendicular to hinge axis D 3 , and to move, on the far end of bar 27c and parallel to themselves at all times, along a semicircular path centred about hinge axis E.
  • driving head 9 is preferably, though not necessarily, fixed to mast 5 to slide temporarily, on command, in a direction d locally perpendicular to the vertical operating plane of mast 5, so as to project from the side of mast 5 facing rod loading arm 13, while still remaining parallel to itself
  • rod-holding chuck 9a is also designed to grip and firmly support the top end of the next drilling rod alongside mast 5, when rod loading arm 13 releases the rod and driving head 9 moves back into line with mast 5, taking the drilling rod with it.
  • driving head 9 On aligning with drilling axis R of the machine, driving head 9 obviously also aligns the next drilling rod II 1 with drilling axis R, directly over the drilling rod 11 projecting from the ground coaxially with axis R, so the next drilling rod can be connected to the top of rod 11.
  • winch 19 raises core barrel 20 from the bottom of the shaft formed by the drilling column, to extract hitch member 23 and the rear of core barrel 20 ( Figure 4) from the rod 11 which rises from the ground coaxially with the drilling axis R of the machine.
  • the crew open and position the two gripping members 32, 33 as close as possible to the top end of rod 11 projecting from the ground coaxially with drilling axis R, with gripping member 32 positioned directly below gripping member 33 and next ' to the top end of rod 11 projecting from the ground coaxially with drilling axis R.
  • gripping members 32, 33 are aligned and fitted over the rear of core barrel 20, the crew activate gripping member 32 to close it about the cylindrical body of core barrel 20, while still allowing axial movement of core barrel 20 with respect to the gripping member; and activate gripping member 33 to grip and firmly retain the body of core barrel 20, to prevent any movement of core barrel 20 with respect to gripping member 33.
  • the crew may also operate cable-winding assembly 21 to slowly wind up and keep cable 21a taut to assist gripper assembly 26.
  • the cylindrical body of core barrel 20 slides freely between the jaws of gripping member 32.
  • core barrel 20 can be manoeuvred easily, even single-handedly, with no risk of accidental fallout of the core sample.
  • box-like section bars 30 and 31 may be replaced with one straight supporting beam of appropriate length; and gripping member 32 may also be fitted to the beam to slide parallel to the longitudinal beam axis.
  • the gripping members actuating device may be designed to move the two gripping members 32, 33 independently along the side of the supporting beam.
  • gripping member 32 may obviously even be permanently fixed to the side of the straight supporting beam, close to the end of the beam positioned next to the top end of rod 11 projecting from the ground coaxially with drilling axis R.
  • mast 5 may be telescopic.

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Abstract

A self-propelled drilling machine (1) having a platform (2), and a supporting mast (5) fitted to the platform (2) to move between a fully lowered position, in which the mast (5) rests on the platform (2), and a work position in which the mast (5) is tilted at a given angle to the ground, with the bottom end (5a) of the mast close to the ground; the self-propelled drilling machine (1) also having a drilling- rod driving head (9) which is fitted to the mast (5) to move along a drilling axis (R) of the machine locally parallel to the longitudinal axis (L) of the mast, and has a rotary rod- holding chuck (9a) which faces the bottom end (5a) of the mast (5), extends coaxially with the drilling axis (R) of the machine, and is designed to firmly, but releasably, engage the top end of a drilling rod (11) extending alongside the mast (5) coaxially with the drilling axis (R) of the machine,- the self-propelled drilling machine also having an articulated arm (25), which has a gripper assembly (26) for gripping and retaining the body of a core barrel (20), and is structured for, in sequence: grip the body of the core barrel (20) projecting from the upper end of the drilling rod (11) which rises from the ground coaxially with the drilling axis (R) of the machine; unsheathe the core barrel (20) completely from the drilling rod (11) which rises from the ground coaxially with the drilling axis (R) of the machine; and lay the core barrel (20) down onto a general supporting frame or directly onto the ground, alongside the platform (2).

Description

SELF-PROPELLED DRILLING MACHINE FOR CORE SAMPLING
TECHNICAL FIELD
The present invention relates to a self -propelled drilling machine for core sampling.
More specifically, the present invention relates to a self-propelled drilling machine for deep ground core sampling, to which the following description refers purely by way of example. BACKGROUND ART
As is known, self-propelled drilling machines usually comprise a normally rectangular, self-propelled platform normally mounted on tracks and equipped with telescopic stabilizers; a straight supporting post, traditionally called mast, hinged to a lateral edge of the platform to rotate about a horizontal hinge axis perpendicular to the longitudinal axis of the mast; and a hydraulic actuating device for moving the mast, on command, between a fully lowered position, in which the mast rests on the platform with its longitudinal axis substantially horizontal, i.e. parallel to the ground and/or to the platform, and a work position, in which the bottom end of the mast rests on or close to the ground, with the mast at a given angle, normally of 5- 90°, with respect to the ground.
Self-propelled drilling machines of the above type also comprise a hydraulic driving head and a hydraulic clamp locking assembly, both fixed, in line with each other, to the mast.
More specifically, the driving head is fitted to the mast to move parallel to the longitudinal mast axis, and is equipped with a rotary rod-holding chuck facing the bottom end of the mast and extending coaxially with a reference axis locally parallel to and at a distance from the longitudinal mast axis. The chuck reference axis defines the drilling axis of the machine, and the chuck is designed to rigidly, but releasably, engage the top end of a tubular drilling rod, positioned beforehand alongside the mast and coaxial with the drilling axis, and to rotate the drilling rod about its longitudinal axis locally coincident with the drilling axis of the machine . The clamp locking assembly is located at the bottom end of the mast, in line with the driving head, and is designed to grip, on command, the body of a drilling rod which rises from the ground coaxially with the drilling axis of the machine, to prevent rotation of the drilling rod about its longitudinal axis.
Self-propelled deep ground core-sampling drilling machines also comprise a hydraulic winch structured for rapidly hoisting to the surface a coring tool or so- called core barrel, which is fired deep into the ground inside the shaft formed by the drilling column.
More specifically, the hydraulic winch comprises a number of idler pulleys at the top end of the mast, so the steel cable hangs over the drilling rod which rises from the ground coaxially with the drilling axis of the machine; and a hitch member which is fixed to the end of the steel cable and is structured to automatically engage the rear of the core' barrel . The core barrel is usually dropped by gravity into the shaft formed by the drilling column, so as to sink into the ground at the bottom of the shaft and retain a sample of earth inside it; and the hitch member fixed to the end of the winch cable is lowered into the shaft immediately after the core barrel, to automatically engage the rear of the core barrel resting on the bottom of the shaft.
Self-propelled drilling machines of the above type, however, have proved to be seriously handicapped when working with the mast at a steep angle to the vertical.
In fact, when the mast is tilted several tens of degrees to the vertical, the core barrel is no longer adequately supported by the steel cable of the winch, and must be harnessed rapidly by the crew - often by jury-rigged means - as it is hoisted out of the drilling rod projecting from the ground, to prevent it from striking the mast as it is comes out. The core barrel, in fact, weighs several hundred kilos, and, in the event of it striking the mast, could cause structural damage to the drill and/or fallout of the core, not to mention serious injury to any crew members working in the vicinity of the mast. DISCLOSURE OF INVENTION
Aim of the present invention is to provide a self- propelled drilling machine for core sampling which is able to obviate to the above drawbacks . In compliance with the above aim, according to the present invention there is provided a self-propelled drilling machine for core sampling as defined in Claim 1 and preferably, though not necessarily, in any one of the dependent Claims . BRIEF DESCRIPTION OF THE DRAWINGS
A non- limiting embodiment of the present invention will be described by way of example with reference to the accompanying drawings, in which:
- Figure 1 shows a view in perspective, with parts removed for clarity, of a self-propelled drilling machine for core sampling realized in accordance with the teachings of the present invention;
- Figure 2 shows a side view, with parts removed for clarity, of the self-propelled drilling machine in Figure 1 ;
Figure 3 shows a partly sectioned view in perspective, with parts removed for clarity, of the rear of the self-propelled drilling machine in Figures 1 and 2; - Figures 4, 5 and 6 show side views, with parts removed for clarity, of the rear of the Figure 1 and 2 self-propelled drilling machine in three different operating configurations. BEST MODE FOR CARRYING OUT THE INVENTION With reference to Figures 1, 2 and 3, number 1 indicates as a whole a self-propelled drilling machine particularly suitable for deep ground core sampling. The self-propelled drilling machine 1 substantially comprises a self-propelled platform 2, which is preferably, though not necessarily, rectangular, and preferably, though not necessarily, mounted on hydraulic tracks 3 and equipped with retractable hydraulic stabilizers 4; a straight supporting mast 5 hinged to a lateral edge of platform 2 to rotate about a substantially horizontal hinge axis A, i.e. parallel to platform 2 and locally substantially perpendicular to the longitudinal axis L of the mast; and a preferably, though not necessarily, hydraulic mast actuating device 6 for moving mast 5, on command, between a fully lowered position (shown by the dash line in Figure 2), in which mast 5 rests on platform 2 with its longitudinal axis L substantially horizontal, i.e. substantially parallel to platform 2, and a work position (Figures 1, 2, 3) , in which the bottom end 5a of mast 5 rests on or at least close to the ground, and mast 5 is tilted a given angle - preferably, though not necessarily, ranging between 5° and 90° - with respect to the ground. In other words, mast 5 lies and is movable in a vertical reference plane (parallel to the Figure 2 plane) locally perpendicular to axis A and to the plane of platform 2. In the example shown, tiltable mast 5 is mounted to slide axially on a supporting slide 7, which is hinged to a fork, projecting upwards from the top face and a short lateral edge of platform 2, to oscillate/rock freely about a horizontal hinge axis A locally parallel to the plane and the short lateral edge of platform 2.
In addition to slide 7, mast actuating device 6 also comprises at least one first hydraulic cylinder 8 (two side by side hydraulic cylinders in the example shown) for controlling the slide tilt angle and interposed between platform 2 and slide 7 to adjust, on command, the tilt angle of slide 7 and mast 5 with respect to platform 2; and at least one second hydraulic cylinder (not shown) for controlling travel of the mast and interposed between slide 7 and mast 5 to move mast 5, on command, along the body of slide 7 and parallel to longitudinal axis L.
In an alternative embodiment not shown, mast 5 may be fixed rigidly to rocking slide 7; in which case, actuating device 6 obviously has no second hydraulic cylinder, and mast 5 simply rotates about axis A in the vertical reference plane.
With reference to Figures 1 and 2, self-propelled drilling machine 1 also comprises a drilling-rod driving head 9 fitted to one side of mast 5 to move parallel to longitudinal mast axis L; an actuator (not shown) for moving driving head 9, on command, along mast 5 to adjust the distance between the driving head and the bottom end 5a of the mast; and a drilling-rod clamp locking assembly 10 fixed rigidly to bottom end 5a of mast 5 and aligned with driving head 9.
Driving head 9 comprises a rotary rod-holding chuck 9a facing the locking assembly 10, i.e. facing bottom end 5a of mast 5, and extending coaxially with a reference axis locally parallel to and at a distance from longitudinal mast axis L; and a preferably, though not necessarily, hydraulic drive motor (not shown) connected to and for rotating drilling rod-holding chuck 9a about said reference axis.
The chuck reference axis is coincident with the drilling axis R of the machine, and rod-holding chuck 9a is designed to rigidly, but releasably, engage the top end of a known tubular drilling rod 11 extending coaxially with drilling axis R, close to mast 5.
In other words, driving head 9 is fitted to mast 5 to move along drilling axis R of the machine, and rod- holding chuck 9a is designed to first grip and then rotate about its longitudinal axis a drilling rod 11 projecting from the ground coaxially with drilling axis R.
Locking assembly 10 comprises two preferably, though not necessarily, hydraulic jaws, which project from bottom end 5a of mast 5, on opposite sides of drilling axis R, and are designed, on command, to grip the body of drilling rod 11 projecting from the ground coaxially with drilling axis R, to prevent rod 11 from rotating about its longitudinal axis.
With reference to Figures 1 and 2, self-propelled drilling machine 1 preferably, though not necessarily, also comprises an internal rod. store 12 on platform 2, for storing a predetermined number of tubular drilling rods 11' stacked substantially horizontally; and a rod loading arm 13 fitted movably to platform 2 to grip a drilling rod 11' stowed in rod store 12, and position rod 11' alongside mast 5, with the longitudinal axis of the rod parallel to and either at a distance from or substantially coincident with drilling axis R.
More specifically, in the example shown, rod store
12 is located, on platform 2, alongside mast 5 in the fully lowered position, so the longitudinal axes of rods 11' are substantially parallel to the vertical operating plane (Figure 2) of mast 5; and rod loading arm 13 is fitted to platform 2 to swing - parallel to the vertical operating plane (Figure 2) of mast 5 - between a pickup position (Figure 1) in which rod loading arm 13 extends substantially horizontally inside rod store 12 to enable the gripping assembly 13a fixed to the end of the arm to grip a drilling rod 11' stowed in the store, and a delivery position (not shown) in which rod loading arm
13 is substantially parallel to mast 5, stationary in the work position, to place rod 11' alongside mast 5, with the longitudinal axis of the rod parallel to and either at a distance from or substantially coincident with drilling axis R. With reference to Figures 1 and 2, in the example shown, rod loading arm 13 substantially comprises a substantially L- shaped supporting beam 14 which lies in a plane substantially parallel to the vertical operating plane (Figure 2) of mast 5, and which has the distal end of the shorter leg of the beam hinged to the top of a mount 15 projecting upwards from platform 2, alongside the fork supporting slide 7 of actuating device 6, so that beam 14 can rotate, with respect to mount 15, about a hinge axis B parallel to and preferably, though not necessarily, coincident with hinge axis A of mast 5.
Rod loading arm 13 also comprises a rocking beam 16 hinged to the far end of the longer leg of beam 14 to rock freely about an axis C locally parallel to axis B; two gripping members 17 located at opposite ends of beam 16 and designed, on command, to grip and firmly retain a drilling rod 11, II1; and at least one double-acting hydraulic cylinder 18 interposed between beam 14 and mount 15 to adjust the angle of beam 14 with respect to the vertical. Rocking beam 16 and the two gripping members 17 form the gripper assembly 13a of rod loading arm 13.
In a variation not shown, the longer leg of beam 14 may comprise two straight, telescopic sections; in which case, rod loading arm 13 also comprises a second double- acting hydraulic cylinder interposed between the two sections to move one section axially with respect to the other to adjust the overall length of the longer leg of beam 14 .
With reference to Figure 2, self-propelled drilling machine 1 also comprises a recovery winch 19 for engaging and rapidly bringing a known coring tool 20 - hereinafter referred to as a core barrel - to the surface from a predetermined depth inside the shaft formed by the column of drilling rods 11 driven into the ground .
In the example shown, winch 19 comprises a preferably, though not necessarily, hydraulic cable- winding assembly 21 located roughly in the centre of platform 2; a number of cable guide pulleys 22 hinged to rotate freely on the top end of mast 5, and engaged by a cable 21a arriving from the cable-winding assembly 21; and a hitch member 23 fixed to the end of cable 21a hanging from the top end of mast 5, and designed to automatically engage the rear of core barrel 20 resting on the bottom of the shaft formed by the column of drilling rods 11 in the ground. Core barrel 20, cable-winding assembly 21, and hitch member 23 are commonly used devices, and therefore not described in detail.
With reference to Figures 2, 3, 4, 5 and 6, unlike known self-propelled drills, self-propelled drilling machine 1 also comprises a preferably, though not necessarily, hydraulic articulated arm 25, which is located at bottom end 5a of mast 5, is fitted on the end with a gripper assembly 26 comprising at least one gripping member capable of gripping and firmly retaining the body of a core barrel 20, and which is structured so as to be able to, in sequence, :
- grip the body of the core barrel 20 projecting from the top end of the drilling rod 11 which rises from the ground coaxially with the drilling axis R of the machine (Figure 4) ;
- unsheathe the core barrel 20 completely from the drilling rod 11 which rises from the ground coaxially with the drilling axis R of the machine (Figure 5) ; and lay down substantially horizontally the core barrel 20 onto a general supporting frame (Figure 6) or directly onto the ground, alongside platform 2.
More specifically, in the example shown, articulated arm 25 projects from locking assembly 10, and substantially comprises a number of supporting beams or segments 27 hinged end to end to rotate about respective hinge axes preferably, though not necessarily, parallel or perpendicular to axis A and to longitudinal mast axis L; and a number of double-acting hydraulic cylinders 28, each interposed between two consecutive supporting segments 27, to adjust the angle of supporting segments 27 with respect to one another.
Gripper assembly 26 is fixed to the last supporting segment 27, and comprises two independent, parallel and abreast gripping members, which translate, parallel to themselves at all times, with respect to each other to adjust the distance between them. A first of the two gripping members is designed, on command, to grip and firmly retain the cylindrical body of core barrel 20; while a second of the two gripping members is designed, on command, to either simply surround or grip and firmly retain the cylindrical body of core barrel 20.
With reference to Figures 3, 4 and 5, in the example shown, articulated arm 25 comprises a first supporting bar 27a, which is hinged to the end of a rigid frame 29 projecting from clamp 10, to rotate with respect to frame 29 about a hinge axis Di locally parallel to longitudinal axis L of mast 5, and extends and swings freely in a plane locally perpendicular to hinge axis D1 and longitudinal mast axis L; a second supporting bar 27b which is hinged to the far end of bar 27a to rotate, with respect to bar 27a, about a hinge axis D2 locally perpendicular to longitudinal axis L of mast 5 and parallel to the plane of bar 27a, and extends and swings freely in a plane locally parallel to longitudinal axis L of mast 5 and locally perpendicular to hinge axis D2; and a third supporting bar 27c shorter than first and second bars, and which is hinged to the far end of bar 27b to rotate, with respect to bar 27b, about a hinge axis D3 locally parallel to hinge axis D2, and extends and swings freely in a plane locally substantially coincident with the plane of bar 27b.
With reference to Figure 3, gripper assembly 26 is fixed to and projects from the far end of bar 27c, and substantially comprises two straight, telescopic box beams or section bars 30, 31; a first preferably, though not necessarily, hydraulic actuating device (not shown) , such as a double-acting hydraulic cylinder, for moving box-like section bars 30, 31 axially, with respect to each other, between a withdrawn position (Figures 3, 4), in which the inner box- like section bar 31 is housed almost entirely inside the outer box- like section bar
30, and a fully extracted position (Figures 5, 6) , in which the inner box-like section bar 31 projects almost entirely from the outer box-like section bar 30; and at least two independent, preferably, though not necessarily, hydraulic gripping members 32, 33 which projects from the same side of box- like section bars 30,
31, perpendicular to the longitudinal axis F of the box- like section bars, so as to be parallel and abreast one another .
At least one of gripping members , 33 is fixed to box- like section bars 30, 31 to slide, parallel to itself, in a direction parallel to longitudinal axis F of the two sections; and gripper assembly 26 comprises a second preferably, though not necessarily, hydraulic actuating device (not shown) for moving said gripping member 32, 33, on command, parallel to longitudinal axis F of the two sections, to adjust the distance between gripping members 32 and 33.
More specifically, with reference to Figures 2, 3, 4 and 5, gripping member 32 is fixed rigidly to inner box- like section bar 31, preferably, though not necessarily, close to the near end of the section (i.e. the end permanently inserted inside outer box- like section bar 30) , and projects from outer box-like section bar 30 through a longitudinal opening 30a in the body of outer box-like section bar 30. Gripping member 33, on the other hand, is fixed to inner box-like section bar 31, alongside gripping member 32, with the possibility of moving along the side of the same inner box- like section bar 31 in a direction parallel to the longitudinal axis F, and engaging in sliding manner the longitudinal opening 30a realized in the outer box-like section bar 30, roughly up to the far end of the inner box-like section 31 (i.e. the end that projects from outer box-like section bar 30); and the second actuating device (e.g. a double-acting hydraulic cylinder) moves gripping member 33 along inner box- like section bar 31 to adjust the distance between gripping members 32 and 33 on command.
In addition to the above, gripping member 32 is designed, on command, to either grip and firmly retain the cylindrical body of core barrel 20 (Figures 2, 4, 5, 6) to prevent core barrel 20 from moving with respect to the gripping member, or to simply surround the cylindrical body of core barrel 20 (Figure 4) and permit axial movement of core barrel 20 with respect to the gripping member; and gripping member 33 is designed, on command, to grip and firmly retain the cylindrical body of core barrel 20 (Figures 2, 4, 5, 6) to prevent core barrel 20 from moving with respect to the gripping member .
With reference to Figures 2, 3 and 4, outer box- like section bar 30 is fixed to the far. end of bar 27c, so that longitudinal axis F of the two sections is locally perpendicular to hinge axis D3.
In the example shown, outer box-like section bar 30 is preferably, though not necessarily, fixed to the far end of bar 27c by a hinge 36 fitted to the opposite side of outer box-like section bar 30 from gripping members 32 and 33, to allow box-like section bars 30, 31 to rotate, with respect to bar 27c, about a hinge axis E parallel to longitudinal axis F of the box- like section bars and locally perpendicular to hinge axis D3, and to move, on the far end of bar 27c and parallel to themselves at all times, along a semicircular path centred about hinge axis E.
With reference to Figure 1, driving head 9 is preferably, though not necessarily, fixed to mast 5 to slide temporarily, on command, in a direction d locally perpendicular to the vertical operating plane of mast 5, so as to project from the side of mast 5 facing rod loading arm 13, while still remaining parallel to itself
(i.e. with drilling rod chuck 9a parallel to drilling axis R of the machine) , and to line up with the next drilling rod already set up alongside mast 5 by rod loading arm 13.
In which case, rod-holding chuck 9a is also designed to grip and firmly support the top end of the next drilling rod alongside mast 5, when rod loading arm 13 releases the rod and driving head 9 moves back into line with mast 5, taking the drilling rod with it. On aligning with drilling axis R of the machine, driving head 9 obviously also aligns the next drilling rod II1 with drilling axis R, directly over the drilling rod 11 projecting from the ground coaxially with axis R, so the next drilling rod can be connected to the top of rod 11.
Overall operation of self-propelled drilling machine 1 can be deduced from the above description, with no further explanation required.
With reference to Figures 2, 4 and 5, to recover core barrel 20 containing the core sample, winch 19 raises core barrel 20 from the bottom of the shaft formed by the drilling column, to extract hitch member 23 and the rear of core barrel 20 (Figure 4) from the rod 11 which rises from the ground coaxially with the drilling axis R of the machine.
At this point (Figure 4) , the crew operate articulated arm 25 to position gripper assembly 26 adjacent to the rear of core barrel 20, with box- like section bars 30, 31 parallel to drilling axis R and facing the rear of core barrel 20, and with gripping members 32 and 33 one over the other, next to the rear of barrel 20.
At the same time, the crew open and position the two gripping members 32, 33 as close as possible to the top end of rod 11 projecting from the ground coaxially with drilling axis R, with gripping member 32 positioned directly below gripping member 33 and next' to the top end of rod 11 projecting from the ground coaxially with drilling axis R.
Once gripping members 32, 33 are aligned and fitted over the rear of core barrel 20, the crew activate gripping member 32 to close it about the cylindrical body of core barrel 20, while still allowing axial movement of core barrel 20 with respect to the gripping member; and activate gripping member 33 to grip and firmly retain the body of core barrel 20, to prevent any movement of core barrel 20 with respect to gripping member 33.
With reference to Figure 2, after securing the body of core barrel 20 to gripper assembly 26, the crew operate the actuating device of box- like section bars 30, 31 and the actuating device of gripping members 32, 33, either simultaneously or one after the other, so as to slowly raise core barrel 20, keeping it coaxial with drilling axis R, and extract it completely from rod 11 projecting from the ground coaxially with axis R. By moving along box-like section bars 30 and 31, gripping member 33 is able to ease core barrel 20 out of rod 11, while gripping member 32 keeps the body of core barrel 20 coaxial with axis R.
While operating the actuating device of box- like section bars 30, 31 and the actuating device of gripping members 32, 33, the crew may also operate cable-winding assembly 21 to slowly wind up and keep cable 21a taut to assist gripper assembly 26. When withdrawing core barrel 20 from rod 11 projecting from the ground coaxially with axis R, the cylindrical body of core barrel 20 slides freely between the jaws of gripping member 32.
With reference to Figures 5 and 6, when core barrel 20 is extracted completely from rod 11 projecting from the ground coaxially with drilling axis R, the crew, if necessary, rotate the entire gripper assembly 26 about axis E (Figure 5) to move core barrel 20 out of line with rod 11 projecting from the ground coaxially with drilling axis R, and then operate articulated arm 25 to lay down core barrel 20 preferably, though not necessarily, into a substantially horizontal position on a supporting frame (Figure 6) or directly onto the ground alongside platform 2. Advantages resulting from the presence of articulated arm 25 and gripper assembly 26 are numerous. First and foremost, articulated arm 25 drastically reduces the downtime involved in manoeuvring core barrel 20, regardless of the angle of mast 5 with respect to the ground.
Moreover, using articulated arm 25, core barrel 20 can be manoeuvred easily, even single-handedly, with no risk of accidental fallout of the core sample. Clearly, changes may be made to self-propelled drilling machine 1 as described and illustrated herein without, however, departing from the scope of the present invention.' In an alternative embodiment not shown, for example, box-like section bars 30 and 31 may be replaced with one straight supporting beam of appropriate length; and gripping member 32 may also be fitted to the beam to slide parallel to the longitudinal beam axis. In which case, the gripping members actuating device may be designed to move the two gripping members 32, 33 independently along the side of the supporting beam.
In the above embodiment, gripping member 32 may obviously even be permanently fixed to the side of the straight supporting beam, close to the end of the beam positioned next to the top end of rod 11 projecting from the ground coaxially with drilling axis R.
In yet another embodiment not shown, mast 5 may be telescopic.

Claims

1) A self-propelled drilling machine (1) comprising a platform (2) and a supporting mast (5) fitted to the platform (2) to move between a fully lowered position, in which the mast (5) rests on the platform (2), and a work position in which the mast (5) is tilted at a given angle to the ground, with the bottom end (5a) of the mast close to the ground; the self-propelled ground drilling machine (1) also comprising a drilling-rod driving head (9) which is fitted to the mast (5) to move along a drilling axis (R) of the machine locally parallel to the longitudinal axis (L) of the mast, and is provided with a rotary rod-holding chuck (9a) which faces the bottom end (5a) of the mast (5) , extends coaxially with the drilling axis (R) of the machine, and is structured so as to firmly, but releasably, engage the top end of a drilling rod (11) extending alongside the mast (5) coaxially with the drilling axis (R) of the machine; said self-propelled drilling machine being characterized by also comprising an articulated arm (25) which has a gripper assembly (26) capable of gripping and retaining the body of a core barrel (20) , and which is structured so as to be able to, in sequence, : - grip the body of the core barrel (20) projecting from the upper end of the drilling rod (11) which rises from the ground coaxially with the drilling axis (R) of the machine ; - unsheathe the core barrel (20) completely from the drilling rod (11) which rises from the ground coaxially with the drilling axis (R) of the machine; and
- lay the core barrel (20) down onto a general supporting frame or directly onto the ground, alongside the platform (2) .
2) A self-propelled drilling machine as claimed in Claim 1, characterized in that the articulated arm (25) is located substantially at the bottom end (5a) of the supporting mast (5) .
3) A self-propelled drilling machine as claimed in any one of the foregoing Claims, characterized in that the gripper assembly (26) comprises a supporting beam
(30, 31) , and at least two independent gripping members (32, 33) which project, parallel and abreast one another, from one side of the supporting beam (30, 31) ; at least a first gripping member (32) being structured for, on command and alternatively, either simply surrounding or griping and firmly retaining the body of said core barrel (20) ; at least a second gripping member
(33) being structured for griping and firmly retaining, on command, the body of said core barrel (20) ; the gripper assembly (26) being also provided with first actuating means for moving said gripping members (32, 33) with respect to each other, to adjust the distance between the first gripping member (32) and the second gripping member (33) .
4) A self-propelled drilling machine as claimed in Claim 3, characterized in that said second gripping member (33) is designed to translate, parallel to itself, along the side of the supporting beam (30, 31) , to adjust the distance between the second gripping member and said first gripping member (32) .
5) A self-propelled drilling machine as claimed in Claim 3 or 4 , characterized in that said articulated arm
(25) is designed to position the gripper assembly (16) adjacent to the part of the body of the core barrel (20) projecting from the top end of the drilling rod (11) which rises from the ground coaxially with the drilling axis (R) of the machine, with the supporting beam (30, 31) of said gripper assembly (26) substantially parallel to the drilling axis (R) of the machine, and with the two gripping members (32, 33) positioned one over the other and astride the body of said core barrel (20) ; the first gripping member (32) being located below the second gripping member (33) and next to the upper end of the drilling rod (11) which rises from the ground coaxially with the drilling axis (R) of the machine.
6) A self-propelled drilling machine as claimed in Claim 3, 4 or 5, characterized in that the supporting beam (30, 31) of the gripper assembly (26) comprises at least two straight, telescopically nested box-like section bars (30, 31) ; and the gripper assembly (26) also comprises second actuating means for moving the two box-like section bars (30, 31) axially with respect to each other. 7) A self-propelled drilling machine as claimed in Claim 6, characterized in that the first gripping member (32) is fixed rigidly to the inner box- like section bar (31), and projects outwards of said outer box-like section bar (30) through a longitudinal opening (30a) formed in the body of the outer box- like section bar (30) ; the second gripping member (33) is fixed to the inner box-like section bar (31), alongside said first gripping member (32), with the possibility of moving along the side of the inner box- like section bar (31) in a direction parallel to the longitudinal axis (F) of the box- like section bars, and engaging in sliding manner said longitudinal opening (30a) ; and the first actuating means move the second gripping member (33) along the inner box- like section bar (31) to adjust the distance between the second gripping member and the first gripping member (32) on command.
8) A self-propelled drilling machine as claimed in any one of Claims 3 to 7 , characterized in that the articulated arm (25) substantially comprises a number of supporting segments (27) hinged end to end to rotate about respective hinge axes (D1, D2, D3) substantially parallel or substantially perpendicular to the longitudinal axis (L) of the mast, and a number of hydraulic cylinders (28), each interposed between two consecutive supporting segments (27) , to adjust the angle of the supporting segments (27) with respect to each other; the gripper assembly (26) being fixed to the last supporting segment (27c) so that the longitudinal axis (F) of the supporting beam (30, 31) is locally substantially perpendicular to the hinge axis (D3) of the last supporting segment (27c) of the articulated arm (25) .
9) A self-propelled drilling machine as claimed in Claim 8, characterized in that the supporting beam (30, 31) of the gripper assembly (26) is fixed to the last supporting segment (27c) of the articulated arm (25) by a connecting hinge (36) which allows the supporting beam (30, 31) to rotates, with respect to the last supporting segment (27c) , about a hinge axis (E) locally substantially parallel to the longitudinal axis (F) of the supporting beam (30, 31) . 10) A self-propelled drilling machine as claimed in any one of the foregoing Claims, characterized by also comprising a hoist (19) designed to engage and lift to the surface the core barrel (20) stationary at a predetermined depth inside the shaft formed by the column of drilling rods (11) driven into the ground coaxially with the drilling axis (R) of the machine.
11) A self-propelled drilling machine as claimed in Claim 10, characterized in that said winch (19) comprises a cable-winding assembly (21) on the platform (2) ; a number of cable guide pulleys (22) for guiding the cable (21a) from said cable drum (21) to the top end of the supporting mast (5); and a hitch member (23) fixed to the end of said cable (21a) and designed to automatically engage the rear of the core barrel (20) resting on the bottom of the shaft formed by the column of drilling- rods (11) driven into the ground coaxially with the drilling axis (R) of the machine.
PCT/IB2009/007179 2008-10-24 2009-10-21 Self-propelled drilling machine for core sampling WO2010046757A1 (en)

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ITTO2008A000787A IT1394132B1 (en) 2008-10-24 2008-10-24 SELF PROPELLED DRILL FOR CAROTAGUES
ITTO2008A000787 2008-10-24

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ITTO20120863A1 (en) * 2012-10-04 2014-04-05 Drillmec Spa MOBILE DRILLING SYSTEM.
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US10526174B2 (en) * 2013-11-19 2020-01-07 Core Laboratories Lp System and method for a self-contained lifting device
WO2015077850A1 (en) * 2013-11-28 2015-06-04 Slim Drilling Serviços De Perfuração S.A Safety mechanism for installation in soil-sampling tooling, with a system for blocking the escape of gas/oil in the stage of recovering the internal tube containing the specimen
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CN109281626A (en) * 2018-11-30 2019-01-29 中国有色金属长沙勘察设计研究院有限公司 A kind of boring sample drilling machine
CN110284837A (en) * 2019-07-19 2019-09-27 广州海洋地质调查局 A kind of deep sea drill being equipped with variable diameter core sampling drilling rod power head
CN110284837B (en) * 2019-07-19 2023-12-22 广州海洋地质调查局 Deep sea drilling machine equipped with variable diameter core sampling drill rod power head
CN112681278A (en) * 2021-01-26 2021-04-20 杭州环岩工程技术有限公司 Highway engineering geological survey ground detection device
WO2023225721A1 (en) * 2022-05-27 2023-11-30 Mohideen Farlin Anooz Automated drilling arrangement
CN115853426A (en) * 2023-03-02 2023-03-28 山东省地质矿产勘查开发局八〇一水文地质工程地质大队(山东省地矿工程勘察院) Mining drilling surveying device
CN117166918A (en) * 2023-09-14 2023-12-05 山东省煤田地质局物探测量队 Self-propelled construction device based on three-dimensional seismic exploration point position correction and application method
CN117166918B (en) * 2023-09-14 2024-02-27 山东省煤田地质局物探测量队 Self-propelled construction device based on three-dimensional seismic exploration point position correction and application method

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