EP1010854A1 - Drilling machine - Google Patents

Abstract

A double-head drilling device is disclosed which can work together with drills or drill pipes of different diameters by converting or retrofitting small sub-units. For this purpose, e.g. B. on drill or drill pipe driving carriage (16) a carriage base (32) on which a drive unit (42) is detachably attached. The drive unit (42) can thus be exchanged for another drive unit which has essentially the same geo drive and is designed for working with a drill or drill pipe of a different diameter. <IMAGE>

Description

The invention relates to a drill according to the preamble of claim 1.

Known drills of this type are for working with drills or drill pipes with a given diameter designed and are successfully used in large numbers, to make pile foundations for buildings.

For new buildings in built-up areas of a locality has already been proposed (DE 195 12 109 A1) on the Drill or the drill pipe drive carriage in the neighborhood their free end raidal particularly compact train so you have a borehole in close proximity can create an existing building wall.

One could now be in the immediate vicinity of existing buildings for some applications, in which a very heavy-duty foundation is not required is used, even with smaller diameter piles get along. Corresponding drilling rigs are available so far not available. While it would be conceivable, drilling rigs generally for working with smaller diameters having drills and drill pipes to design such However, drilling rigs would only be partially utilized, as one large part of foundation work to be carried out the larger diameter used so far Piles needed.

The present invention is therefore intended to be a drilling rig further developed according to the preamble of claim 1 be that it is equally with drills and / or drill pipes of different diameters are used can be.

This object is achieved by a drilling device with the features specified in claim 1.

Advantageous developments of the invention are in the Subclaims specified.

In the case of a drilling device according to claim 2, the adaptation takes place to the desired diameter of the drill and / or Drill pipe in that one on the drive carriage working on the drill or the drill pipe Drive unit replaced. You don't just switch the actual drive part but also the Drive off, the motor and reduction gear consists. This way you get with the setting the desired drill or drill pipe diameter too a corresponding adaptation of the drive itself.

The development of the invention according to claim 3 is in terms of a simple yet precise approach the drive unit on the slide body is an advantage.

With the development of the invention according to claim 4 it is achieved that further arranged on the drill Tools such as cables for moving loads equally can be used, no matter which drill or Drill pipe diameter just adjusted the drill is.

In a drill according to claim 5, one does not need heavier parts to dismantle from working with a Drill or drill pipe of the first diameter to work with a drill or drill pipe of second diameter switch. You only need the real thing Drill or drive part working the drill pipe to be replaced by another.

In claim 6 is a particularly simple storage for such interchangeable drive parts specified.

In a drill according to claim 7 is automatic ensures that the farthest from the leader Shell surface of the drill or drill pipe for drills or drill pipes of different diameters essentially is the same. This essentially allows identical movements of a drill carrying the drill Chassis boreholes for rows of different piles Diameter in front of an existing one Generate building wall. Successful foundation work under numerical control of the person carrying the drill Chassis, so the control needs when changing the Drill diameter or drill pipe diameter is not complete to be reprogrammed; minor changes the program is sufficient.

In a drill according to claim 8, one obtains by a single movement adjusting the bearing arrangement to the respective diameter of the drill or drill pipe and engaging a pinion of the drive unit with a drive sprocket on the drill or Drill pipe working drive part.

The development of the invention according to claim 9 is with regard to good load bearing arrangement advantageous.

In a drill according to claim 10 can also a drill guide part adjacent to the surface of the earth or slightly adjust the drill pipe in the working diameter.

Figur 1:

Eine seitliche Ansicht eines Doppelkopf-Bohrgerätes zum Erzeugen von Bohrlöchern in unmittelbarer Nachbarschaft einer Gebäudewand;

Figur 2:

Eine ähnliche Ansicht wie Figur 1, in welcher jedoch das Bohrgerät einen kleineren Durchmesser aufweisenden Bohrer und einen kleineren Durchmesser aufweisendes Bohrrohr antreibt;

Figur 3:

Eine Aufsicht auf den Bohrrohrantrieb des Bohrgerätes nach Figur 1, teilweise geschnitten;

Figur 4:

Eine Aufsicht auf den Bohrrohrantrieb des Bohrgerätes nach Figur 2, teilweise geschnitten;

Figur 5:

Eine Aufsicht auf einen abgewandelten Bohrrohrantrieb in der Einstellung für großen Durchmesser aufweisende Bohrrohre;

Figur 6:

Eine ähnliche Ansicht wie Figur 5, in welcher der Bohrrohrantrieb aber für ein Bohrrohr kleinen Durchmessers eingestellt ist;

Figur 7:

einen axialen Schnitt durch den Bohrrohrantrieb von Figur 7 längs der dortigen Schnittlinie VII-VII; ud

Figuren 8 und 9:

Eine ähnliche Ansicht wie Figur 6, in welcher jedoch ein nochmals abgewandelter Bohrrohrantrieb gezeigt ist; und

Figur 10:

eine ähnliche Ansicht wie Figur 3, in der jedoch ein nochmals abgewandelter Bohrrohrantrieb wiedergegeben ist.

The invention is explained in more detail below using exemplary embodiments with reference to the drawing. In this show:

Figure 1:

A side view of a double-head drilling device for producing drill holes in the immediate vicinity of a building wall;

Figure 2:

A view similar to Figure 1, but in which the drill drives a smaller diameter drill bit and a smaller diameter drill pipe;

Figure 3:

A top view of the drill pipe drive of the drilling device according to Figure 1, partially cut;

Figure 4:

A top view of the drill pipe drive of the drilling device according to Figure 2, partially cut;

Figure 5:

A top view of a modified drill pipe drive in the setting for large diameter drill pipes;

Figure 6:

A view similar to Figure 5, but in which the drill pipe drive is set for a drill pipe of small diameter;

Figure 7:

an axial section through the drill pipe drive of Figure 7 along the section line VII-VII; ud

Figures 8 and 9:

A view similar to Figure 6, but in which a further modified drill pipe drive is shown; and

Figure 10:

a view similar to Figure 3, but in which a further modified drill pipe drive is shown.

In Figure 1 is a total of 10 excavator chassis designated. This bears a total of 12 designated handlebar arrangement adjustable a leader 14th

On the leader, a drive carriage 16 is vertical Movable in the direction of a drive tube 18 a drill pipe 20 works.

Is above the drive carriage 16 on the Leader 14 another drive carriage 22 movable, who works on a drive rod 24. The latter wears a drill 26 which extends through the drill pipe 20.

At the lower end of the leader there is a pipe guide head 27 provided that forms a radial bearing for the drill pipe 20.

To create a borehole in the immediate vicinity of a schematically indicated building 28 is the drill 26 rotated and pressed into the ground. According to the Progress of the drill 26 also becomes the drill pipe 20 pressed into the ground while rotating. The drill 26 promotes the loosened soil constantly up in drill pipe 20, from where there are openings 30 in the drive tube 18 can fall down.

If the drill 26 has reached the desired depth, then it becomes by moving the drive carriage upwards 22 pulled out of the drill pipe. Should the one to be created Reinforced pile, so there is a reinforcement in the drill pipe 20 lowered, and then the drill pipe 20 backfilled with in-situ concrete and turning out of the borehole pulled out.

The process described above is repeated, such that you have a series of adjacent concrete piles receives, which can thus form a building foundation, which is in the immediate vicinity of building 28.

The drill described above can work with large diameter drill pipe 20 and large Measuring drill 26 as shown in FIG. 1 on working with a small diameter Drill tube and small diameter drill 26 can be converted, as shown in Figure 2.

To make this conversion easy, the drive carriage 16 and 22 each in the figure 3 and 4 shown structure, these figures the drive carriage for the drill pipe show the drive carriage for the drill and the pipe guide head are analog designed.

As a modification, you can use the upper drive carriage 22 so that it can be used together with the smallest diameter drill is suitable, the drive rods for the drill larger diameter are then unchanged.

As can be seen from Figure 3, the drive carriage 16 a sled base 32, which with lateral Cheeks 34, guide strips 36 which engages in the Corners of the leader 14 are provided. On one shoulder 38 of the carriage base 32, a rear end section rests 40 of a box frame 41 a total of 42 designated drive unit. The latter has one down hanging plate 44, which is at the front of the sled base 32 is present.

Positioning pins 46 are provided on the shoulder 38, that work with position openings 48, provided in the end section 40 of the drive unit 42 are. For detachably connecting the drive unit 42 with the slide base 32 serve screws 50 which cooperate with threaded holes 52 in the shoulder 38. Additional screws 54 extend through the vertical plate 44 and are in the front boundary surface of the carriage base 32 screwed.

The drive unit 42 carries two hydraulic motors 56, 58, which work on pinion 60, 62 on an intermediate pinion 64. The latter meshes with a ring gear 66, which on the Outer surface of a drive sleeve 68 is formed, and this is via a not shown in Figure 3 Radial / axial bearings in the front section of the drive unit 42 stored. The thickness of the drive sleeve 68 and the surrounding web of the box frame 41 the drive unit 42 chosen as small as this in With regard to the mechanical stresses still acceptable is. In this way, the drive unit stands 42 only slightly in the radial direction over the outer surface a drill pipe connected to the drive sleeve 68 20 above, as can be seen from Figures 1 and 2.

The drive carriage 22 for the drill is similar trained, with the difference that instead of the drive sleeve 68 a drive disc is provided, which in the center a polygonal (usually square) Has receptacle for a boring bar.

The pipe guide head 27 is also similar to that Drive carriage 16 built, but contains one from Removable radial bearing unit slide base cooperates with the outer surface of the drill pipe.

If you want the drill to work with smaller ones Diameter drill and smaller diameter having the drill pipe, the screws 50 and 54 solved and with the help of a in Figure 1 and 2 schematically at 70 indicated hoist the Drive unit 42 of the drive carriage 22 and then of the drive carriage 16 raised and on the Laid ground. Then the radial bearing unit of the Pipe guide head 27 dismantled. Then one new radial bearing unit and new drive units 72 added and in reverse order to the Carriage base 32 of the pipe guide head 27, the Drive carriage 16 and the drive carriage 22nd attached. The new radial bearing unit and the new Drive units have the same geometry as the replaced ones Units with the proviso that they are for different The diameter of the drill or drill pipe are designed. E.g. now has the drive sleeve 68 on the drive carriage 16 desired smaller diameter, and is the intermediate pinion 64 enlarged accordingly.

Because of smaller diameter drills and drill pipes can be rotated with less torque in the ground can, you can also the hydraulic motors 56, 58 smaller lay out.

It can be seen that a drill as described above was very different for drilling boreholes Diameter can be converted.

In the embodiment shown in Figures 5 and 6 are parts of the drive carriage that are functional above with reference to FIGS. 3 and 4 correspond to the parts explained, again with the same Provide reference numerals. These parts are below not described in detail again.

A top plate of the box frame 41 of the drive unit 42 now has a rectangular recess 74 serve free ends of the drive unit extending edges at the same time as a guide rail for guide grooves 76, the are provided in side surfaces of a motor plate 78. The motor plate 78 carries the hydraulic motors 56, 58 and the intermediate pinion 64. To move the motor plate 78 in horizontal direction perpendicular to the leader serve two Hydraulic cylinder 80, which at the rear end portion 40 of the Housing 41 of the drive unit 42 are supported.

The intermediate pinion 64 has one below its ring gear lying flange 82, over the sprocket ring gear 66 protrudes radially and axially below the Pinion 60, 62 runs through. The bearing collar 82 has a trapezoidal shape Cross-section. Below the ring gear 66 is inserted into the drive sleeve 68 a bearing groove 84 which to the bearing collar 82 matching cross section.

At the free end of the drive unit 72 are small Diameter bearing rollers 86, 88 mounted, the contour of which is also adapted to the bearing groove 84. The drive sleeve 68 is thus through the intermediate pinion 64 with its bearing collar 82 and the bearing rollers 86, 88 stored.

By moving the motor plate 78 toward the Leader 14 to the collar 82 as far from the drive sleeve 68 be moved away, that the latter from the bearing rollers 86, 88 is released and removed from the box frame 41 can. You can then have a smaller diameter Insert drive sleeve 68 and the motor plate 78 Move so far away from the leader that the bearing sleeve 68 again simultaneously with the bearing collar 82 and the Bearing rollers 86 and 88 is engaged. Then at the same time also a correct engagement between the ring gear of the intermediate pinion 64 and the ring gear 66 of the Drive sleeve 68 given, since all together with the drive carriage sprockets to be used have, which are composed of teeth of the same shape.

The engagement relationships between the intermediate pinion 68 and the bearing rollers 86, 88 on the one hand and the drive sleeve 68, on the other hand, are the angled sectional view can be seen from Figure 7.

The further dealt with embodiment according to the figure 8 differs from that of Figure 5 only in that instead of a single intermediate pinion 64 two intermediate pinions 64a and 64b are used, which symmetrical to the vertical median plane of FIG Drive carriage 16 are arranged.

In the exemplary embodiment according to FIG. 9, the bearing rollers are 86, 88 carried by a bearing plate 90 with guide shoes 92 overlaps the lateral edges of the box frame 41. The bearing plate 90 is through hydraulic cylinders 80 adjustable and lockable. That way too the drive carriage 16 drill pipes with different Store and drive the diameter.

It is understood that instead of that in the figures 5 to 9 bearing rollers 86, 88 also slide bearing parts can use that cooperate with the bearing groove 84 and extend over a small circumferential area, so that they are different with circular bearing grooves Diameter can work together equally.

10 are the hydraulic motors 56, 58 mounted on support plates 94, 96, the attached to the carriage base 32 independently of the housing 41 and in recesses 98, 100 of the housing 41 Find admission. The adjustment of the drive carriage to the respective drill pipe diameter is now done by bare Replacement of the bearing and gear unit, which is replaced by the Components 41, 64, 66, 68 is formed. So that's it unit cheaper to replace, and the connections to the hydraulic motors need to change the boron tube diameter not to be solved.

Claims (10)

Drill with a leader (14), with at least a drive carriage that can be moved on the leader (16; 22) with a drill (26) or a drill pipe (20) cooperates, characterized in that the Drive carriage (16; 22) on drill (26) or drill pipes (20) different diameters can be converted or converted is. Drilling device according to claim 1, characterized in that at least one drive carriage (16; 22) on carriage base (32) movable to the leader (14) and a drive unit releasably attached to this (42) or a detachable part of such, in particular a bearing and gear unit (41, 64, 66, 68). Drilling device according to claim 2, characterized in that the drive unit (42) via positioning means (46, 48) positioned on the carriage base (32) is. Drilling device according to claim 2 or 3, characterized in that that the drive units (42) for use with Different drills (26) or drill pipes (20) Have the same basic geometry. Drilling device according to claim 1, characterized in that the drive carriage (16; 22) can be removed or convertible bearing arrangement (82 to 88) and a motor unit (56, 58, 78) in relation to the Axis of the drill or drill pipe in the radial direction movably arranged on the drive carriage (16; 22) and that sprockets (66) from on the drill or Drilling pipes of different diameters working Drive parts (68) constructed from teeth of the same contour are. Drilling device according to claim 5, characterized in that the bearing assembly has a plurality of bearing rollers (82, 86, 88) or slide bearing elements, which in a bearing groove (84) of the drive part (68) intervene, at least from the bearing rollers (82, 86, 88) one with respect to the axis of the drive part (68) is movable in the radial direction. Drilling device according to claim 6, characterized in that the bearing arrangement has two fixed bearing rollers (86, 88) which is remote from that of leader (14) End of the drive carriage (16; 22) are adjacent, preferably symmetrical to one by the Axis of the drive part (68) going median plane of the Drive carriage (16; 22) are arranged. Drilling device according to claim 7, characterized in that the bearing arrangement has a single movable bearing roller (82) or two symmetrical to the median plane of the Drive carriage (16; 22) arranged movable bearing rollers (82a, 82b). Drilling device according to one of claims 6 to 8, characterized characterized in that the bearing rollers (82, 86, 88) Tapered rollers are and in a bearing groove (84) of the drive part (68) are running, the matching complementary ones Cross section. Drilling device according to one of claims 1 to 9, characterized that at least one guide carriage (27) on carriage base (32) movable to the leader (14) and a radial bearing unit releasably attached to this having.

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