EP2553203A2 - Horizontal drilling device - Google Patents
Horizontal drilling deviceInfo
- Publication number
- EP2553203A2 EP2553203A2 EP11714933A EP11714933A EP2553203A2 EP 2553203 A2 EP2553203 A2 EP 2553203A2 EP 11714933 A EP11714933 A EP 11714933A EP 11714933 A EP11714933 A EP 11714933A EP 2553203 A2 EP2553203 A2 EP 2553203A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- rod
- horizontal drilling
- drilling device
- mandrel
- drill
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 115
- 239000012530 fluid Substances 0.000 claims description 10
- 238000009412 basement excavation Methods 0.000 description 32
- 239000002689 soil Substances 0.000 description 21
- 238000000034 method Methods 0.000 description 5
- 239000010720 hydraulic oil Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 239000010426 asphalt Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 210000000276 neural tube Anatomy 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- E21B7/04—Directional drilling
- E21B7/046—Directional drilling horizontal drilling
-
- 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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/20—Combined feeding from rack and connecting, e.g. automatically
-
- 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
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/02—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil
- E21B49/06—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil using side-wall drilling tools pressing or scrapers
Definitions
- the invention relates to a horizontal drilling device.
- Horizontal boring devices are used to install supply and disposal lines in the soil in a trenchless design, or to replace already laid old lines without trenching.
- Horizontal drilling devices are widely used, in which a drill head is initially driven obliquely into the soil by means of a drill pipe and, starting from a drilling carriage positioned on the earth's surface, until the drill head reaches the desired depth
- the target point of such a horizontal well may be, for example, in a specially excavated target mine or in a basement room or he may also, i. as the starting point, are located at the surface of the earth, so that the drill head is reversed after a certain Bohr progress in an obliquely upward direction to let the drill head to exit again on the earth's surface.
- CONFIRMATION COPY After the boring head has reached the target point, it is often replaced by an expander, such as a conical expander, to expand the previously created (pilot) bore as the drill string is retracted by the borer carriage. It can be provided to attach to the expansion device a newly retracted line to collect these simultaneously with the expansion of the pilot hole in the soil.
- an expander such as a conical expander
- Horizontal drilling rigs are also used to replace trenchless trenchings buried underground.
- the drill string is pushed by the drill carriage along the old line (and in particular by an old pipe) and after reaching a destination point, which can be located, for example, in a sewer maintenance shaft, the front end of the drill pipe is connected to a widening device by which the old line is cut or burst during retraction of the drill string, wherein the portions of the destroyed old pipe are displaced radially into the surrounding soil.
- a widening device by which the old line is cut or burst during retraction of the drill string, wherein the portions of the destroyed old pipe are displaced radially into the surrounding soil.
- Neurohr be fed into the old tube.
- the new pipe can have an outer diameter which corresponds to or even exceeds the outer diameter of the old pipe.
- Horizontal drilling devices regularly have a linear drive, with which the drill string is driven in the ground and withdrawn. Furthermore, a rotary drive is provided regularly, with which the drill pipe (and thus the associated drilling or expander) can be set in rotation. Through the rotation of the drill head or the expander the propulsion in the soil can be improved.
- the drill heads of such horizontal drilling devices have an asymmetrically shaped (eg bevelled) drill head front which results in lateral deflection of the drill head during movement through the soil. If the drill head is driven in rotation simultaneously with the driving in the ground, the asym- metric training of the drill head does not affect the straight bore course, because the lateral deflection compensates on average one revolution.
- Horizontal boring devices in which the drill mount is intended for positioning on the surface of the earth are often suitable only for use in regions outside the urban area, since these are positioned at a considerable distance from the area because of the boring path required for achieving the desired drilling depth must be in which the hole or the new line to be introduced into the soil or in which an existing old line to be replaced. Frequently, space is not available in built-up urban areas.
- Another disadvantage of such Horizontalbohrvoriquesen is that these - regularly trained as a self-propelled Bohrlafette - horizontal drilling produce considerable land damage that must be eliminated again with a corresponding financial outlay. Because of these disadvantages, the trenchless line construction is limited in built-up
- a horizontal drilling device which is designed for use in small excavations with a rectangular cross section of about 70 cm x 40 cm and a depth of about 1 m to 1, 5 m.
- This Horizontalbohrvorrich- device comprises a frame whose dimensions correspond approximately to the cross-sectional dimensions of the excavation and which is lowered into the excavation. One Part of the frame protrudes beyond the upper edge of the excavation.
- a combined linear / rotary drive is provided, via which a drill string consisting of individual rod sections is driven into the ground.
- the linear / rotary drive comprises a rotary drive, which consists of the existing of two hydraulic cylinders
- Linear actuator in the horizontal direction can be moved within the frame.
- the last rod assembly is fixed non-positively in the rotary drive, for which the rotary drive has jaws.
- the rod sections which are gradually screwed to the rear end of the already drilled drill string, the linear / rotary drive over a
- the linkage fed, which this from a rod magazine, which is arranged in the upper, over the edge of the pit extending portion of the frame, transported to the linear / rotary drive.
- the linkage comprises a changer motor whose motor shaft is provided with a threaded pin.
- the threaded pin is screwed into the rear end of a linkage, which is intended for transport to the linear / rotary drive.
- the changer motor with the threaded pin represents a boom support, in which the rod section is held until it is caught by the rotary drive and connected to the drill string.
- the boom support is integrated with the rotary drive.
- the rotary drive then has, for example, a threaded connection, which is screwed into the internal thread of the rear end of a rod section.
- the rod assembly is then first screwed to the rear end of the drill string and then - as needed - rotates the entire drill pipe during propulsion in the ground.
- a disadvantage of the known from DE 196 33 934 A1 horizontal drilling is that due to the coaxial alignment of the changer motor, the new linkage shot and the drill string only relatively (compared to the length of the
- the present invention seeks to provide an improved horizontal drilling.
- a horizontal drilling should be specified, which allows the use of the longest possible rod sections.
- the invention is based on the idea of providing as long as possible drill pipe sections for the drill pipe in order to require as few drill pipe changes as possible (i.e., the attachment or release of a drill string to / from the drill pipe) for a drilling project with a defined bore length.
- drilling devices which - as is known from DE 196 33 934 A1 - in a pit with small
- the maximum length which may have the rod sections, limited by the dimensions of the pit in the direction of the drilling axis.
- the rod sections are held during the linkage change by the boom support (change-over motor with threaded connection). Since this boom support is positioned in a coaxial position behind the rod section, the maximum possible length of the rod sections shortens at least by the length of the boom support.
- the invention provides to reduce the space requirement of the boom recording itself to a minimum, so that the gained space for an extension of the rod sections is available. This we achieved by the fact that the boom support is designed in the form of a mandrel on which the hollow rod sections of the drill string are attached.
- the horizontal drilling device comprises a linear drive, a movable by means of the linear drive rotary drive, a drill pipe and a boom support, wherein the drill pipe hollow and the boom support in Form of a receiving mandrel is formed, whereby the drill string is attachable to the mandrel.
- a boom support in the form of a mandrel in addition to the known in most conventional horizontal wells threaded connector also has the advantages that the plugging can run much faster, and, if the mandrel and the corresponding inner cross section of the rod sections - as is preferably provided - a circular cross-section have, the drill string is movable on the mandrel both in the axial and in the rotatory direction. As a result, further functions can be realized, as will be apparent from the following description.
- the receiving mandrel is pivotable between a first layer parallel to the direction of movement of the linear drive and a second layer, which is preferably aligned perpendicular to the first layer.
- the horizontal drilling device according to the invention can thereby be advantageously provided with a linkage, which is provided for the transport of a rod section of the drill string to the mandrel.
- the rod assembly is preferably plugged from the linkage pin on the mandrel when the mandrel is in the second position, and the rod assembly can be fed to the rotary drive when the mandrel is in the first position.
- the pivotability of the receiving mandrel thus makes it possible to transport the relatively long rod sections of the drill string in a vertical alignment by means of the linkage pin and to have them plugged onto the receiving mandrel in this orientation and then the linkage pin by pivoting the receiving mandrel into to pivot the horizontal alignment required for drilling, in which the rod assembly is in a coaxial position with respect to the drilling direction.
- the boom support has a travel drive in order to be able to move the boom support and the rod section applied thereto in the horizontal direction.
- the rod assembly can be attached to the rear end of the already drilled in the soil drill string, without having to resort to the linear drive of the horizontal drilling, as is the case with conventional horizontal drilling.
- the receiving mandrel is also formed hollow and connected thereto a supply for a drilling fluid.
- the linkage recording of the horizontal drilling device according to the invention can thus additionally serve as a connection element to the
- One or more seal (s) on the mandrel can prevent unwanted leakage of the drilling fluid.
- Due to the preferably provided rotation of the rod assembly on the mandrel can also be realized by the mandrel, the function of a rotary feedthrough, as required for the supply of rotationally driven drill pipe with a drilling fluid.
- the preferably provided movability of the boom receptacle is useful so that it can be tracked during drilling of the drill string.
- connection for the Bohrfiüsstechnikszucht is integrated into a hinge of the mandrel. This allows a structurally simple and yet robust integration of Bohrfiüsstechnikszuschreib be achieved.
- Fig. 1 a horizontal drilling device according to the invention in a perspective
- FIG. 3 shows an enlarged detail of the illustration according to FIG. 2;
- FIGS. 1 to 3 shows the lower section of the horizontal drilling device according to FIGS. 1 to 3 in a perspective view
- FIG. 5 shows the illustration of FIG. 4 in another operating position
- 6 is an isolated view of the rotary drive of the horizontal drilling device in a perspective view
- 7a shows an isolated view of the boom support of the horizontal drilling device in a first operating position in a perspective view
- FIG. 7b shows an isolated representation of the boom support of the horizontal drilling device in a first operating position in a sectional side view
- FIG. 8 a an isolated view of the boom support of the horizontal drilling device in a second operating position in a perspective view
- FIG. 8b shows an isolated representation of the boom support of the horizontal drilling device in a second operating position in a sectional side view
- 9a is an isolated view of the driving ring of the rotary drive including a rod section in a first operating position in an isometric view;
- Fig. 9b is a front view of the drive ring shown in FIG. 9a and
- 10a is an isolated view of the driving ring of the rotary drive including a rod section in a second operating position in an isometric view;
- FIG. 10b is a front view of the driver ring shown in FIG. 10a and
- Fig. 11 is an isolated view of the boom support and the lower
- Fig. 1 shows an isometric view of a horizontal drilling device 1 according to the invention when introducing a pilot hole in the soil.
- the horizontal drilling device comprises a cylindrical housing 2, which is partially closed by a cylindrical jacket 3. Functionally, the horizontal boring device 1 or the housing 2 of the horizontal boring device 1 is subdivided into two sections, namely a lower section called "pit section", which is located inside a excavation pit 4 specially excavated for receiving the horizontal boring device 1. In the pit section of the horizontal boring device 1 the casing 2 is substantially completely closed by the casing 3. This prevents that soil dissolving from the wall of the excavation 4 into the soil of the soil.
- the housing 2 formed cavity falls into where further functional elements of the horizontal drilling device 1 and in particular a combined linear / rotary drive 5 is located. Otherwise, soil falling into the cavity could contaminate these functional elements, which could impair the function of the horizontal drilling apparatus 1.
- the housing 2 is designed to be partially open in order to give an operator access to a linkage pin 6 extending into this area.
- the horizontal drilling device 1 is positioned "suspended" within the excavation 4, ie it is not supported on the bottom of the excavation 4, but rather on a supporting device with a total of three support legs 7, in the region of the surface portion of the horizontal drilling device 1 on longitudinal beams. 8
- Each of the support legs 7 can be fastened to the respective side member 8 in a total of five different positions, thereby enabling height adjustment of the horizontal drilling device 1 suspended in the excavation 4. This height adjustment is important, for example, within the pit section
- Positioning of the support legs 7 at the various positions along the side members 8 takes place via a respective transverse pin 9, which passes through a through hole in a cross member 10 of the respective support leg 7 and the respective longitudinal member 8 of the housing 2 inserted through and then fixed.
- Each of the support legs 7 further comprises a spindle support, which is connected via a rotary joint with the cross member 10 of the respective support leg 7.
- the spindle support comprises a threaded rod 1 1, which has a support leg 12 at its foot end.
- a handle 13 is provided, via which the threaded rod 1 1 can be rotated about its longitudinal axis, whereby a longitudinal displacement relative to the threaded rod surrounding the spindle housing 14 is achieved.
- the spindle supports are used to align the horizontal drilling device 1 within the pit 4 exactly after a first height positioning already by the attachment of the support legs 7 to the
- the excavation 4 - as well as the housing 2 of the horizontal drilling device 1 - has a cylindrical shape whose inner diameter also corresponds substantially to the outer diameter of the housing 2 of the horizontal drilling device.
- the jacket 3 of the horizontal drilling device 1 in the area of the pit section is thus more or less directly on the wall of the excavation 4. Due to the extensive agreement of the inner diameter of the excavation 4 and the outer diameter of the housing 2, not only the size of the excavation pit 4 to be excavated can be kept to a minimum, but it can be achieved within the excavation 4 as large as possible and homogeneous support of the horizontal drilling 1. Due to the circular cross-section of the excavation 4 and the housing 2, the support is also independent of the respective rotational orientation (about the longitudinal axis of the horizontal drilling).
- the excavation 4 was excavated by first with a crown drill (not shown), an annular groove with the required (outer) diameter in the surface seal (asphalt surface) was introduced, which removes dislodged disc-shaped asphalt cover and then the underlying soil by means of a Suction dredger (not shown) was sucked.
- a crown drill not shown
- an annular groove with the required (outer) diameter in the surface seal asphalt surface
- Suction dredger includes a suction nozzle, which also has a circular cross-section.
- the excavation 4 is excavated slightly deeper than necessary in order to allow a height adjustment of the suspended horizontal drilling device 1 within the excavation 4, without causing an unwanted placement of the lower end of the horizontal boring device 1 on the pit floor.
- the horizontal drilling device 1 was lowered by means of a crane (not shown) into the excavation 4 until the support legs 7 previously fastened to the longitudinal beams 8 of the housing 2 are in contact with the earth's surface. With the help of the crane, the horizontal drilling device 1 was then still rotationally aligned within the excavation by being rotated about its longitudinal axis until the arranged by the arranged within the pit portion of the horizontal drilling 1 linear / rotary drive drilling axis has in the desired starting direction for the pilot hole , On the spindle supports then a fine adjustment of the working height of the horizontal drilling device 1 and within limits of the inclination of the horizontal drilling device 1 with respect to the vertical could be achieved.
- the horizontal boring device 1 Since the wall of the excavation 4 - in particular when it was excavated by means of a suction dredger - is not uniformly cylindrical, the horizontal boring device 1 according to the invention has a total of four supporting elements 15 distributed in a uniform pitch over the circumference in the region of the excavation section. These support elements 15 comprise support plates 16, which in a retracted position in each case form a section of the cylindrical jacket 3 of the horizontal drilling device. The support plates 16 can each be deflected by means of a hydraulic cylinder 17 in the radial direction to the outside to make a direct contact of the horizontal drilling device 1 with the wall of the excavation 4 in order to safely support these within the excavation 4.
- FIG. 3 The individual components of these support elements 15 are clearly visible in FIG. 3.
- Each of the support plates 16 is connected via a first pivot 18 to a first end of a Auslenkhebels 19, which in turn is rotatably supported by a second pivot joint 21 on the housing 2 of the horizontal drilling device 1.
- a second end of the Auslenkhebels 19 is connected to the head of a piston rod 20 of the hydraulic cylinder 17.
- a extension and retraction of the hydraulic cylinder 17 thus causes a partial rotation of the Auslenkhebels 19 about the pivot 21, whereby the respective support plate 16 can be deflected radially or withdrawn.
- End stops 22 prevent the support plate 16 when retracting the hydraulic cylinder 17 penetrates into the interior defined by the shell of the housing.
- Fig. 2 shows one of the Fig. 1 corresponding representation of the entire horizontal drilling device 1, but in which a part of the shell 3 is removed in the pit section to make visible the functional elements arranged therein.
- FIGS. 3 to 5 show various views of this portion of the horizontal drilling device 1 in enlarged views. It can be seen that the combined
- Linear / rotary drive 5 is arranged at the lower end of the horizontal drilling device 1 within the housing 2. This serves to propel a composite of individual rod sections 23 drill pipe 24 rotating in the soil.
- FIG. 6 shows a partial section through the linear / rotary drive 5 in a representation isolated from the remaining elements of the horizontal drilling device 1.
- the linear drive is formed by two hydraulic cylinders 25.
- the piston rods 26 of the two hydraulic cylinders 25 pass through the respective cylinder tube 27 completely and are connected at their two ends to the housing 2 of the horizontal drilling device 1.
- the piston rods 26 each have a centrally disposed piston (not shown), which divides the respectively formed between the cylinder tube 27 and the piston rod 26 annular space into two working chambers, which can be supplied via a hydraulic line 66 with the hydraulic oil.
- a movement of the respective cylinder tube 27 on the piston rod 26 in one or the other direction is achieved.
- the movement of the two hydraulic cylinders 25 of the linear drive is synchronized.
- a rotary drive is arranged between the two cylinder tubes 27 of the linear drive forming hydraulic cylinder 25 and secured thereto.
- the rotary drive comprises a motor 29 flanged to a hollow gear 28 (in particular dere a hydraulic or an electric motor).
- a drive shaft 30 of the motor 29 is connected to a bevel gear 31, which in turn meshes with a toothed ring 32, which in turn is connected via screw 33 with a drive sleeve 34.
- the drive sleeve 34 is rotatably supported by two roller bearings 35 within a housing 36 of the hollow gear 28. A rotation of the drive shaft 30 of the
- This longitudinal axis substantially corresponds to the longitudinal axis of the drill pipe 24 held therein and consequently also the drilling axis, i. the starting direction of a pilot hole to be introduced or the longitudinal axis of a hole running out in the wall of the excavation pit or of an old pipe.
- a drive ring 37 For transmitting the rotational movement of the drive sleeve 34 and the longitudinal movement generated by the hydraulic cylinders 25 of the linear drive on the drill pipe 34 held in the drill pipe 24 is a drive ring 37 which - fixed in an operating position of the drill string 24 within the driver ring 37 - the drill string 24 positively.
- the driving ring 37 is mounted in a form-fitting manner within the drive sleeve 34 and can be exchanged in a simple manner by first removing a snap ring 63 from a corresponding groove in the inside of the drive sleeve 34 and then pulling a spacer ring 64 out of the drive sleeve. The driving ring 37 can then easily from the
- FIGS. 9a and 9b as well as 10a and 10b show, in two views in each case, the two operating positions of the drill rod 24 within the driver ring 37 which are relevant for the operation of the horizontal drilling apparatus 1. These two operating positions differ by a 90 ° relative rotation of the driver ring 37a Longitudinal axis relative to the drill pipe 24th In the operating position shown in Figs. 9a and 9b, the drill pipe 24 is locked in the driving ring. This locking is achieved by the special jacket shape of the rod sections 23 of the drill rod 24 and a shape of the central opening of the driver ring 37 adapted thereto.
- Each rod assembly 23 of the drill string 24 has a cylindrical basic shape with a relatively small diameter middle portion 38 and two relatively large diameter end portions 39a, 39b.
- two parallel flats 40 are provided, resulting in a cross section with two parallel straight sides and two opposite arcuate sides.
- the driver ring 37 forms a passage opening corresponding to this cross-section, so that it is possible if the driver ring 37 and the rod assembly 23 guided therein are arranged in the rotational orientation shown in FIGS. 10a and 10b are to insert the rod assembly 23 in the through hole of the cam ring 37 and free to move (in the longitudinal direction).
- each rod section 23 has a reduced outer diameter in order to achieve a (defined) bending stiffness in relation to the end sections 39a, 39b. This should enable the use of a controllable inclined drilling head. By reversing the drill head 43 in the ground, a sectionally arcuate bore profile is achieved.
- the drill string 24 must adapt to this arcuate bore course, which leads to a corresponding bending stress.
- the reduced diameter and thus relative to the end portions 39a, 39b relatively flexible middle section 38 of each rod section 23 serves to keep the rod assembly 23 altogether pliable, while at the same time the end portions 39a, 39b, which are particularly vulnerable to breakage, stiff perform.
- the individual rod sections Due to the arrangement of the combined linear / rotary drive 5 at the lower end of the pit portion of the horizontal drilling device 1 and due to the small outer dimensions of the horizontal drilling device 1 (the housing 2 has a maximum diameter of about 60 cm), the individual rod sections
- the linkage receptacle 44 is shown in the overall view of FIGS. 4 and 5 and isolated in the illustrations of FIGS. 7a, 7b, 8a and 8b.
- the central element of the boom support 44 is a receiving mandrel 45, which is mounted in a bridge 46 which is connected to the cylinder tubes 47 of two further hydraulic cylinders 48.
- the hydraulic cylinders 48 are also those in which the piston rod 49 protrudes from the cylinder tube 47 on both sides.
- the two free ends of the two piston rods 49 are connected to the housing 2 of the horizontal drilling device 1, so that by a corresponding pressurization of the hydraulic cylinder 48 with hydraulic oil, the cylinder tubes 47 can be moved on the stationary piston rods 49 and consequently the boom support 44 in the horizontal direction.
- the receiving mandrel 45 of the boom support 44 is pivotally mounted within the bridge 46 about a horizontal axis, wherein a pivoting between the two in Figs. 7a, 7b on the one hand and 8a, 8b on the other hand end positions shown is possible.
- the pivoting is achieved via a further hydraulic cylinder 50, which is supplied via corresponding hydraulic connections 65 with a hydraulic oil.
- the longitudinal axis of the receiving mandrel 45 and a rod section 23 mounted thereon are coaxial with the longitudinal axis of the drive sleeve 34 of the rotary drive and thus point in the boring direction of the horizontal boring device 1 Fig. 8a, 8b shown vertical and thus pivoted by 90 ° to the operating position shown in FIGS. 7a and 7b alignment of the mandrel 45 and the attached thereon rod assembly 23 is positioned within a guide rail 51 of the linkage pin 6.
- a rod section 23 can be plugged by the linkage pin 6 on the receiving mandrel 45 or deducted from this.
- a receiving carriage 52 which can receive a rod section 23, slidably guided, wherein the receiving carriage 52 is secured to a run of a drive belt 53 which extends outside of the guide rail 51 and parallel to this.
- An upper drive roller of the drive belt 53 is connected to a motor (not shown) for driving the same.
- a lower guide roller 54 is mounted on an axle 55, which is guided at its two ends on a respective threaded rod 56 and in a respective groove 57.
- Fig. 1 1 shows an isolated view of the boom support 44 and the lower part of the linkage pin 6 including the receiving carriage 52, in which a rod section 23 is held.
- the receiving carriage 52 forms a passage opening into which the rod section 23 can be inserted by the operator in the region of the loading station 58 from the side.
- the inserted rod assembly 23 is suspended, i. two pairs of projections 59 each form a clearance which is only slightly wider than the diameter of the central portion 38 and narrower than the wider side of the end portions 39a, 39b of the rod section 23.
- One of the projection pairs engages in the locking grooves 41 of the front end portion 39 a, while the second projection pair engages in the central portion 38 of the rod section 23.
- the rod assembly 23 is attached to the vertically oriented receiving mandrel 45 (see Fig. 5 [receiving carriage not shown] and 8a, 8b).
- the mandrel is then pivoted by 90 ° in the horizontal operating position shown in Figs. 4 and 7a, 7b, whereby the rod assembly 23 is pivoted out of the receiving carriage 52 in the lateral direction.
- the receiving carriage 52 can then be moved back to the loading station 58, so that a further rod section 23 can be used.
- a hydraulically actuated cylinder may be provided which is arranged at the end perpendicular to the longitudinal axis of the rod section 23 on the bridge 46.
- the piston of the cylinder can be extended end into a groove formed on the outside of the rod section 23.
- the groove has in the direction of the longitudinal axis of the rod section 23 a larger dimension than the retractable into the groove piston, so that although a certain axial clearance between rod section 23 and mandrel 45 is possible, but a Slip is prevented due to the groove engaged with the piston.
- the horizontal drilling device 1 is designed for the execution of flushing holes, ie the drill bit 43 arranged on the front side of the drill string 24 is supplied via the drill string 24 with a drilling fluid which emerges through front and side outlet openings.
- the individual rod sections 23 of the drill string 24 are designed to be hollow throughout.
- the drilling fluid is supplied to the drill pipe 24 via the mandrel 45, which is also designed to be almost continuous hollow. Only at the rear end, ie the protruding from an attached rod assembly 23 end, this is closed by means of a screw 60.
- the hollow space formed by the hollow mandrel 45 is supplied with the drilling fluid via a likewise hollow shaft on which the receiving mandrel 45 is rotatably mounted.
- Two sealing rings on the outside of the mandrel 45 prevent leakage of the drilling fluid through the gap between the mandrel 45 and the rod section 23. This can be achieved in a simple manner a safe and structurally simple connection of the pivoting mandrel 45 to the Bohrroughkeits provoke.
- a use of the horizontal drilling device 1 for creating a pilot hole is as follows:
- the boring head 43 shown in FIG. 1 is inserted into the drive sleeve 34 of the rotary drive through a passage opening 61 for the drill string formed in the housing 2. This is necessary because the drill head has an integrated transmitter for localization by means of a so-called walk-over receiver and thereby longer than the rod sections 23.
- the drill head has a (rear) end portion 62 which corresponds in terms of geometric shape to the end portions 39a, 39b of the rod sections 23:
- a cylindrical basic shape which is provided on two opposite sides with parallel flats, are two arcuate locking grooves into which the Member Merring 37 can be screwed by a 90 ° rotation in a clockwise direction, whereby the drill head 43 is locked in the rotary drive.
- the rotary drive is in the rearmost position in which this is driven by the linear drive as far as possible from the passage opening 61 away.
- the horizontal drilling device 1 is then lowered into the excavation 4, aligned and supported, as already described.
- the drill head 43 is drilled as far as possible in the ground. Due to the length of the drill head 43, the drilling is carried out with two strokes of the linear drive; at the first stroke, the cam ring 37 is located at the front end of the two parallel flats, so that the pressure forces are transmitted via the trained there paragraph and the torque on the serving as a key surfaces parallel flats. After the first stroke of the linear drive is moved back so that the driving ring 37 in the
- Engage locking grooves and lock the drill head 43 can. Then the linear drive is again moved forward by one working stroke, whereby the drill head 43 is completely bored. The rotary drive is then in the foremost position shown for example in FIGS. 4 and 5. A provided in the region of the passage opening locking fork (not shown) is then shut down. The fork width of the locking fork corresponds to the distance between the two parallel flats of the drill head 43 and the distance between the two locking grooves.
- the drill bit 43 was aligned by means of the rotary drive so that the two flats of the end portion are aligned vertically, so that the locking fork can drive over the end portion (in a section in front of the locking grooves) of the drill head 43, whereby rotation of the drill head by means of a positive fixation 43 is temporarily prevented.
- a first rod section 23 was already inserted into the receiving carriage 52 by the operating person and attached to the receiving mandrel 45 by a method of the linkage pin 6. After a pivoting of the mandrel 45 and the attached thereon rod assembly 23 by 90 ° in its horizontal orientation, the rod assembly 23 is in a largely coaxial position to the already drilled bit 43.
- the two hydraulic cylinders 48 of the rod holder 44 can then the front Threaded plug of the rod assembly 23 are moved up to the rear threaded bushing of the drill head 43.
- the driving ring 37 is then released from the locking grooves of the drill head 43 and the linear / rotary drive 5 is moved back so far that this is located in a defined region of the front end portion 39 a of the first rod section 23.
- the first linkage 23 By actuating the rotary drive, the first linkage 23 is with screwed to the fixed by the locking fork in the direction of rotation drill head 43, wherein the torque on the parallel flats 40 is transmitted. Due to the fact that the driving ring 37 is not yet locked in the locking groove 41, the rod section can be displaced relative to the driving ring 37 during screwing in the longitudinal axial direction. As a result, the longitudinal movement of the rod section 23 required for screwing the rod section 23 can be realized without a complex length compensation realized by the linear drive.
- the position of the rotary drive during the screwing is chosen so that the locking grooves 41 of the front end portion 39 a after the complete screwing of the rod assembly 23 with the drill head 43 are within the driving ring 43, so that this directly by a 90 ° rotation, ie without that a further method of the linear drive is required, can engage in the locking grooves 41, to fix the rod assembly 23 in the longitudinal direction.
- the drill string is then drilled so far until the rotary drive has returned to its front end position.
- the rotary drive is unlocked by a 90 ° rotation (in the opposite direction) of the driver ring and moved back by means of the hydraulic cylinder 25 of the linear drive until the driver ring 37 can engage in the locking grooves 41 of the rear end portion 39b of the first rod section 23; There, the driving ring 37 is locked again by a 90 ° rotation. Then the drill string, consisting of drill head 43 and first rod assembly 23 is driven by the use of the linear / rotary drive 5 by a further working stroke of the linear drive further into the soil.
- the locking grooves 41 of the front end portion 39a of the first linkage 23 are below the locking fork, which can then be lowered to fix the drill string while the second linkage 23 is bolted to the existing drill string.
- the second rod assembly 23 is moved up by means of the rod holder 44 to the rear end of the first rod assembly 23.
- the rotary drive is released from the first linkage 23 and moved so far to the rear that this at the parallel flats 40 can engage in the front end portion 39 a of the second rod section 23.
- the second rod section 23 is then screwed to the first rod section 23, wherein after completing the screwing of the cam ring 37 is locked again in the locking grooves 41 of the front end portion 39 a of the second rod section and the
- Drill strand is again bored until reaching the front end position (of the linear drive).
- the linear / rotary drive 5 is then released by a 90 ° relative rotation of the driving ring 37 of the second rod section 23 and moved back to lock the second rod section 23 in the rear end portion 39b and the drill string to another working stroke in to drive the soil.
- the locking fork always engages in the locking grooves 41 of the rod sections 23 in order to secure this or the drill string not only rotationally but also against longitudinal movement. As a result, it is possible to prevent the drill string from shifting unintentionally owing to elastic deformations of the compressed soil and of the drill string compressed or stretched by the loads.
- the preparation and Verbohren more rod sections 23 is then identical
- pilot bore After the pilot bore has been completed, it may be provided to replace the drill head 43 by a widening device (not shown) to widen the bore during retraction of the drill string.
- a neural tube (not shown) or other supply line (not shown) may be attached to the expander head, which is retracted into the bore simultaneously with the expander.
- the driving ring 37 of the rotary drive is locked in the locking grooves 41 of the rear end portion 39 b of the last rod section 23.
- the rotary drive is moved by a process of the hydraulic cylinder 25 of the linear drive to the rear.
- the locking fork is then moved down and fixes the penultimate rod assembly 23 by this in the locking grooves 41 of the rear end portion 39 b of this rod section 23 engages.
- the linear / rotary drive is then released by a 90 ° rotation of the driving ring of the rod section 23 and moved forward again until the driving ring 37 engage in the locking grooves of the front end portion 39a of the last rod section 23 can.
- the drill string 24 is pulled out of the ground so far that the locking fork can lock the penultimate rod section 23 in the front end portion 39a. Then the last rod section 23 can be unscrewed from the penultimate rod section 23 by a rotation of the drive sleeve 34 in the counterclockwise direction. Due to the particular shape of the rod section in the region of the end sections, a torque for releasing the threaded connection can be transmitted without the carrier ring 37 being fixed in the locking groove 41 also in the longitudinal axial direction. This allows the driving ring 37 slide when unscrewing the rod assembly 23 according to the thread pitch over the rod section, whereby a length compensation on the linear drive can be avoided.
- the boom support 44 forwards to accommodate the unscrewed last rod section 23.
- the boom support 44 then moves back to its rearmost position and the linear / rotary drive 5 at the same time forward, so that it can attack on the rear end portion 39b of the then last (previously penultimate) rod section 23.
- the unscrewed rod assembly 23 is then moved completely out of the drive sleeve 34 and can be used by pivoting the receiving mandrel 45 in the vertical position in the receiving carriage 52 of the linkage pin 6.
- the receiving carriage 52 can then be moved up to the feed station 58, where the rod section can be removed by an operator.
- the horizontal drilling device shown is particularly suitable for use in inner city areas and in particular for the creation of domestic connections in the supply area (in particular gas, water, electricity, glass fiber, etc.). Drill holes of up to 20 meters in length can be drilled and used to retract pipes or cables with an outside diameter of up to 63 mm.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL11714933T PL2553203T3 (en) | 2010-03-31 | 2011-03-31 | Horizontal drilling device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010013724.3A DE102010013724B4 (en) | 2010-03-31 | 2010-03-31 | horizontal drilling |
PCT/EP2011/001617 WO2011120697A2 (en) | 2010-03-31 | 2011-03-31 | Horizontal drilling device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2553203A2 true EP2553203A2 (en) | 2013-02-06 |
EP2553203B1 EP2553203B1 (en) | 2014-07-02 |
Family
ID=44510842
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11714933.6A Active EP2553203B1 (en) | 2010-03-31 | 2011-03-31 | Horizontal drilling device |
Country Status (8)
Country | Link |
---|---|
US (1) | US9347267B2 (en) |
EP (1) | EP2553203B1 (en) |
JP (1) | JP5808389B2 (en) |
CN (1) | CN103154417B (en) |
DE (1) | DE102010013724B4 (en) |
ES (1) | ES2511115T3 (en) |
PL (1) | PL2553203T3 (en) |
WO (1) | WO2011120697A2 (en) |
Families Citing this family (4)
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DE102010013723A1 (en) | 2010-03-31 | 2011-10-06 | Gdf Suez | Method for operating a horizontal drilling device and horizontal drilling device |
CN206299341U (en) * | 2016-10-14 | 2017-07-04 | 北京理工大学 | A kind of small-size directional rig |
CN107401408B (en) * | 2017-08-25 | 2023-09-26 | 双菱集团有限公司 | Multidirectional splitting device |
EP3882398B1 (en) * | 2020-03-17 | 2023-08-23 | BAUER Maschinen GmbH | Drilling rod and method for retrofitting a kelly bar assembly |
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- 2011-03-31 JP JP2013501690A patent/JP5808389B2/en active Active
- 2011-03-31 EP EP11714933.6A patent/EP2553203B1/en active Active
- 2011-03-31 PL PL11714933T patent/PL2553203T3/en unknown
- 2011-03-31 CN CN201180016480.5A patent/CN103154417B/en active Active
- 2011-03-31 ES ES11714933.6T patent/ES2511115T3/en active Active
- 2011-03-31 WO PCT/EP2011/001617 patent/WO2011120697A2/en active Application Filing
- 2011-03-31 US US13/638,316 patent/US9347267B2/en active Active
Non-Patent Citations (1)
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Also Published As
Publication number | Publication date |
---|---|
CN103154417A (en) | 2013-06-12 |
JP5808389B2 (en) | 2015-11-10 |
EP2553203B1 (en) | 2014-07-02 |
PL2553203T3 (en) | 2015-03-31 |
CN103154417B (en) | 2015-08-19 |
DE102010013724B4 (en) | 2015-09-24 |
DE102010013724A1 (en) | 2011-10-06 |
ES2511115T3 (en) | 2014-10-22 |
WO2011120697A2 (en) | 2011-10-06 |
WO2011120697A3 (en) | 2012-12-20 |
US20130105225A1 (en) | 2013-05-02 |
JP2013527343A (en) | 2013-06-27 |
US9347267B2 (en) | 2016-05-24 |
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