Drilling apparatus and method for drilling

Abstract

The invention relates to an earth working apparatus having an undercarriage which is designed as a running gear, and an upper carriage which is supported in a rotatable manner on the undercarriage and has a driver's cab as well as a drive motor for the undercarriage. According to the invention, between the undercarriage and the upper carriage an extension segment is arranged, through which a vertical distance between the undercarriage and the upper carriage is extended. On the extension segment between the undercarriage and the upper carriage a support means for tilt protection is mounted. The invention furthermore relates to a method for earth working with an earth working apparatus of such type.

Claims

1. A drilling apparatus comprising: an undercarriage, which is designed as a running gear, an upper carriage, which is supported in a rotatable manner on the undercarriage and has a driver's cab as well as a drive motor for the undercarriage, and a mast arranged on the upper carriage, along which a drill drive is supported in a vertically adjustable manner, wherein the upper carriage is horizontally aligned with respect to the undercarriage defining a horizontal plane extending through the upper carriage, between the undercarriage and the upper carriage, an extension segment is arranged, through which a vertical distance between the undercarriage and the upper carriage is extended, and on the extension segment between the undercarriage and the upper carriage, a support and tilt protection device is mounted.

2. The drilling apparatus according to claim 1, wherein the extension segment is designed in a sleeve-shaped manner.

3. The drilling apparatus according to claim 1, wherein the extension segment is non-rotatably connected to the undercarriage, and the upper carriage is supported in a rotatable manner on the extension segment.

4. The drilling apparatus according to claim 1, wherein the support and tilt protection device has at least two carrier arms, which extend out from the extension segment in the horizontal direction, and vertical supports are arranged on the carrier arms.

5. The drilling apparatus according to claim 4, wherein the carrier arms are directed contrary to each other and project laterally beyond the undercarriage.

6. The drilling apparatus according to claim 4, wherein the vertical supports each have a support foot, which is designed in a vertically telescopic manner.

7. The drilling apparatus according to claim 4, wherein the support and tilt protection device has four carrier arms, which are designed as a support cross.

8. The drilling apparatus according to claim 1, wherein the extension segment has a height of at least 0.5 m.

9. A drilling apparatus according to claim 8, wherein the height is 1 m to 4 m.

10. The drilling apparatus according to claim 1, wherein the undercarriage is designed as a crawler-track running gear.

11. A method for drilling, in which on a ground around a working location an auxiliary device is arranged, which has a predetermined height with respect to the surface of the ground, wherein for drilling, the drilling apparatus according to claim 1 is used, wherein the upper carriage with the extension segment has a distance to the surface of the ground which is greater than the height of the auxiliary device.

12. The method according to claim 11, wherein the drilling is carried out as a drilling operation and a bore is produced, as the auxiliary device, a casing machine is provided around the bore as a working location, and with the casing machine, at least one support pipe is introduced into the bore.

Description

(1) In the following the invention is described in greater detail by way of preferred embodiments illustrated schematically in the accompanying drawings, wherein show:

(2) FIG. 1 a perspective partial view of an earth working apparatus according to the invention;

(3) FIG. 2 a scaled-down side view of the earth working apparatus of FIG. 1 with a schematically illustrated supplementary means;

(4) FIG. 3 a top view of an earth working apparatus according to the invention on a casing machine; and

(5) FIG. 4 a side view of the casing machine of FIG. 3 from the front.

(6) According to FIG. 1 an earth working apparatus 10 pursuant to the invention has an undercarriage 12 designed as a crawler-track running gear. On a central carrier frame 14 of the undercarriage 12 a crawler unit 16 is in each case arranged laterally in a known manner. Above the undercarriage 12 an upper carriage 20 is supported in a rotatable manner in the horizontal direction.

(7) The upper carriage 20 has a base frame 21, to the front side of which a vertical mast 26 is linked in a pivotable manner. Furthermore, on the front side of the upper carriage 20 a driver's cab 22 is arranged for operating the earth working apparatus 10. In addition, on the base frame 21 of the upper carriage 20 the drive units and in particular drive motors for the undercarriage 12, the winches and the hydraulic components are provided. These units are encased in a housing 24 of the upper carriage 20. In the illustration according to FIG. 1 the winches and the hydraulic positioning cylinders for actuating the mast 26 are omitted for the sake of clarity.

(8) Between the undercarriage 12 and the upper carriage 20 a sleeve-shaped extension segment 30 is arranged, through which the upper carriage 20 is displaced upwards by approximately 2 m in the illustrated embodiment. On the external side of the sleeve-shaped extension segment 30 a support means 40 with a central carrier ring 42 is mounted. From the central carrier ring 42 four horizontal carrier arms 44 extend radially outwards in the form of a cross. The carrier arms 44 each project laterally beyond the undercarriage 12. At the free ends of the carrier arms 44 a vertical support 46 is in each case mounted by means of a bolt connection. The vertical supports 46 each have an external sleeve 47, in which a telescopic bar 48 is guided in a movable manner and is capable of being secured. At the lower end of the telescopic bar 48 a plate-shaped support foot 50 is arranged, through which, besides the crawler units 16, the earth working apparatus 10 can be additionally supported with respect to the ground.

(9) In FIG. 2 the earth working apparatus 10 of FIG. 1 is shown as being designed as a drilling apparatus. Along the vertical mast 26 a drill drive 28 is guided in a vertically movable manner. By way of the drill drive 28 a drilling tool 60 can be driven in a rotating manner via a rope-suspended Kelly bar 62. In the depicted embodiment the drilling tool 60 is designed as a drilling bucket. During drilling by means of a drilling bucket this fills up with removed drilling material. When the drilling bucket has been filled appropriately, it has to be withdrawn from the borehole and emptied outside the borehole. For this purpose, the upper carriage 20 is normally pivoted by 180° with respect to the undercarriage 12 into an emptying position. In the emptying position a truck is normally located underneath the drilling bucket, which receives the drill spoil by opening the bottom of the drilling bucket and can transport this to a waste disposal site. Afterwards, the drilling tool 60 is pivoted back into a drilling axis 64 so that the drilling tool 60 can be sunk again and the bore can be advanced further.

(10) Around the drilling location as working location a supplementary means 70 is arranged which is shown schematically as a box in FIG. 2.

(11) Due to the arrangement of the sleeve-shaped extension segment 30 between the undercarriage 12 and the upper carriage 20, the said upper carriage 20 is displaced upwards with respect to a surface of the ground. As a result, an underside of the upper carriage 20 is arranged above an upper edge of the supplementary means 70. This allows the upper carriage 20 to be pivoted horizontally via a pivot bearing 32 at the upper end of the sleeve-shaped extension segment, without the upper carriage 20 colliding with the supplementary means 70.

(12) According to FIG. 3 the earth working apparatus 10 of FIG. 2 is shown in an extremely schematic view from above, with the supplementary means 70 being designed as a casing machine 70.

(13) In the depicted illustration the upper carriage 20 is pivoted by 90° with respect to the undercarriage 12. Furthermore, the support means 40 designed as a support cross with four carrier arms 44 is illustrated. In the depicted position the upper carriage 20 is located in the operating position, in which the drilling tool 60 can be introduced through the supplementary means 70 into the ground.

(14) According to FIG. 4 the supplementary means 70 designed as a casing machine in accordance with FIG. 3 is shown in greater detail. The casing machine has a base frame 72 which is provided with drive units 74 for the additional screwing-in of drill pipes that can have a diameter ranging from 0.5 m to 3 m and more. The drive units 74 are hydraulic cylinders in particular, with which the drill pipe to be introduced can be clamped and rotated. The base frame 72 can be walked on and is provided with a railing 76 on its upper side. Typically, such a casing machine has a height of 2 to 3 m.

(15) By way of the earth working apparatus 10 designed in accordance with the invention an efficient earth working can be implemented without any additional constructional measures for lowering the supplementary means 70 or raising the earth working apparatus 10.