EP2815033A1

EP2815033A1 - Earthworking tool and method for earthworking

Info

Publication number: EP2815033A1
Application number: EP13766478.5A
Authority: EP
Inventors: Stefan SPREITZER
Original assignee: Bauer Spezialtiefbau GmbH
Current assignee: Bauer Spezialtiefbau GmbH
Priority date: 2013-08-27
Filing date: 2013-08-27
Publication date: 2014-12-24
Anticipated expiration: 2033-08-27
Also published as: CN105723032A; US20160201394A1; WO2014117874A1; HK1205214A1; EP2815033B1; US9790742B2

Abstract

The invention relates to an earthworking tool, comprising an undercarriage, which is disposed as a chassis, and a superstructure, which is rotatably mounted on the undercarriage and which has a driver compartment and a drive motor for the undercarriage. A extension segment is arranged between the undercarriage and the superstructure, by means of which a vertical distance between the undercarriage and the superstructure can be extended. A support device to prevent tipping is provided on the extension segment between the undercarriage and the superstructure. The invention further relates to a method for earthworking by means of such an earthworking device.

Description

Earth working device and method for Erdbearbeitunq

The invention relates to an earthworking device with an undercarriage, which is designed as a chassis, and an upper carriage, which is rotatably mounted on the undercarriage and a driver's cab and a drive motor for the undercarriage, according to the preamble of claim 1.

The invention further relates to a method for earthworking, in which an additional device is arranged on a floor about a processing point, which has a predetermined height relative to the bottom surface of the floor, according to the preamble of claim 11.

A generic Erdbearbeitungsgerät, for example, from EP 1 418 152 A1 or DE 103 60 918 B3.

On the rotatable superstructure, the mast with a displaceable drill drive are arranged on a front, while at the opposite rear of the upper carriage of the main drive motor and other drive units are arranged to balance the weight. In addition, supporting feet may be attached to the superstructure in order to stabilize and support the earth-working device sufficiently in relation to the ground, in particular during machining operations with large force discharges. The aim is to keep the overall center of gravity of the soil tillage implement as close to the ground as possible in order to reduce the danger of tipping.

In the earthworking device according to DE 103 60 912 B3, a pipe rotating device is arranged at the lower end of the mast in addition to a movable along the mast rotation drive for a drilling tool. This device is used for screwing in a drill pipe, which serves approximately to support the borehole wall.

From DE 38 09 626 C2 or DE 197 29 315 A1 piping machines for introducing a drill pipe are known, which can also be used separately from Erdbearbeitungsgerät, especially when the casing machine is relatively large. Depending on the diameter of the drill pipe, such a separate casing machine may have a height of a few meters. A drill is used to further drill and excavate the soil material from the wellbore, often using a discontinuous drilling technique such as a bucket or a short auger. To empty the drilling tool from drilled soil material, it is necessary to pivot the superstructure of the drill again and again away from the borehole in an unloading position. During this pivoting, care must be taken that the rear of the superstructure does not collide with the upper end of the casing machine. Moving the undercarriage is undesirable because this would require a time-consuming readjustment of the earthworking implement at the borehole.

In order to avoid a collision during pivoting of the superstructure, it is known to either place the casing machine in a recess or to make a pedestal on the wellbore on which the digester is positioned in a raised position opposite the casing machine. However, these additional measures are time consuming, laborious and costly. This is especially true when a variety of such holes are to create.

The invention is based on the invention of providing an earth-working device and a method for earthworking, with which an efficient and at the same time safe operation is achieved even when relatively large auxiliary devices are used at a soil-working point.

The object is achieved on the one hand by an earthworking device with the features of claim 1 and on the other hand by a method for earthworking with the features of claim 11. Preferred embodiments of the invention are specified in the respective dependent claims. The earth working device according to the invention is characterized in that between the undercarriage and the superstructure an extension segment is arranged, through which a vertical distance between the undercarriage and the superstructure is extended, and that on the extension segment between the undercarriage and the superstructure, a support device is mounted for anti-tip ,

A first aspect of the invention is to displace the superstructure overall relative to the undercarriage and to achieve a greater working height above the ground surface by interposing an extension segment. The extension segment can be modular and even consist of several segment pieces. It can be set as a desired height. Larger conversions on the undercarriage or the superstructure are basically not necessary. Only the drive and supply strands between the uppercarriage and the lowercarriage, which are guided by the extension segment, are to be lengthened and adjusted accordingly.

Another aspect of the invention is to attach to the extension segment a support device for anti-tip. As a result, despite the increase in the center of gravity of the overall device sufficient tilting security is ensured.

In addition, the additional support means between the superstructure and the undercarriage reduces wear in the undercarriage during machining. Because the power flow takes place when the support device extended to a considerable extent on the support means and thus relieves the undercarriage and the numerous wheel bearings on the undercarriage. The improved rigidity also increases the machining accuracy during earthworking.

According to a preferred embodiment of the invention, it is provided that the extension segment is sleeve-shaped. Thus, the Antriebsund supply strands between the superstructure and the undercarriage can be performed within the sleeve-shaped extension segment. At the same time there is sufficient space on the outside of the segment to secure the support means. In principle, it is possible that the extension segment is fixedly attached to the superstructure, so that the rotational movement takes place during pivoting of the superstructure between the extension segment and the undercarriage. It is also possible that by lifting the device as a whole by the support means of the undercarriage for a change in direction is rotatable. A particularly simple embodiment is achieved according to a preferred embodiment of the invention in that the extension segment is rotatably connected to the undercarriage and that the superstructure is rotatably mounted on the extension segment. Thus, the pivot bearing is moved upwards according to the superstructure. As a result, a load on the bearing is kept low in particular by tilting moments. It can be arranged a pivot bearing also above and below the extension segment.

According to a further embodiment of the invention, it is preferred that the support means comprise at least two support arms which extend in the horizontal direction away from the extension segment, and that vertical supports are arranged on the support arms. The support arms extend in particular transversely to the longitudinal side of Erdbearbeitungsgerätes. Because with a pivoting of the superstructure by 90 ° relative to the undercarriage is in this direction the greatest risk of tipping.

It is particularly preferred according to the invention that the support arms are directed opposite to each other and protrude laterally beyond the undercarriage. The support arms thus extend in pairs offset by 180 ° to the center or pivot axis of the upper carriage. This also increases the buckling resistance of the expansion sleeve.

On the horizontal support arms vertical supports are arranged, which connect the support arms respectively to the ground. The vertical supports can be arranged as a whole releasably at the outer end of the support arms. A preferred embodiment of the invention is that the vertical supports each have a support leg, which is formed vertically telescopically. The vertical supports can have an upper receiving sleeve, in which the support leg is displaceably mounted. This vertical telescoping can be done by hand or by means of an actuating cylinder. In principle, more than two support arms may be provided on the support means, preferably four support arms. It is preferred according to an embodiment of the invention that the support means comprises support arms, which are formed as a support cross. The support means in this case has a central support ring, which encloses the sleeve-shaped extension segment. From the outside of the support ring extending in the horizontal direction, the support arms and thus form a horizontal support cross.

An advantageous embodiment of the invention is that the extension segment has a height of at least 0.5 m, preferably 1 m to 4 m. As a result, a significant increase in the superstructure is achieved, but still a high level of support reliability can be achieved with the support device provided according to the invention.

Basically, the undercarriage can be designed arbitrarily, be equipped with wheels. A particularly advantageous embodiment is according to the invention in that the undercarriage is designed as a crawler chassis. This is particularly advantageous in rough construction site terrain and has a large contact surface and thus a high resistance to tipping.

As Erdbearbeitungsgerät according to the invention milling, ramming for ramming sheet piles or similar construction machines can be provided. It is particularly useful according to the invention that the earthworking device is designed as a drill with a mast, along which a drill drive is mounted vertically adjustable. In particular, in a pivoting of a superstructure with a mast arranged thereon is to pay attention to a particularly good overturning, which is achieved by the invention. In particular, a so-called casing machine for separately screwing a drill pipe into the borehole can be provided as a supplementary device in a drill. The casing machine may in particular be arranged separately from the soil working device. In conjunction with the earth working device according to the invention, a relatively large and high casing machine can thus also be used in a drilling rig without having to excavate a recess for the casing machine at each drilling point or erect a platform for the drilling rig. The method according to the invention is characterized in that an earthworking device as described above is used for earthworking, wherein the superstructure with the extension segment has a distance to the surface of the ground which is greater than the height of the additional device. In this way, an efficient Erdbearbeitung can be performed with a pivoting of the upper carriage, the risk of collision of the upper carriage is avoided with the auxiliary device during pivoting.

According to the invention, it is particularly preferred for the earthworking to be carried out as a drilling and for a borehole to be provided as an additional device for a casing machine around the borehole as the machining point and for at least one support pipe to be introduced into the borehole with the casing machine. It can thus be made a cased bore in an efficient manner. In particular, when creating multiple holes, such as are required for bored pile walls, an effective process management is achieved without separate recesses or pods would have to be created at the hole.

The invention will be explained in more detail below with reference to preferred embodiments, which are shown schematically in the accompanying drawings. In the drawings show:

Fig. 1 is a partial perspective view of an inventive

earthworking implement;

FIG. 2 shows a reduced side view of the earth working device of FIG. 1 with a schematically illustrated additional device; FIG.

FIG. 3 is a top plan view of an earthworking implement according to the invention on a casing machine; FIG. and

Fig. 4 is a side view of the casing of Fig. 3 from the front. An inventive earth working device 10 according to FIG. 1 has an undercarriage 12, which is designed as a crawler chassis. On a central support frame 14 of the undercarriage 12 are each a caterpillar drive ship 16 arranged in a known manner. Above the undercarriage 12 an upper carriage 20 is rotatably mounted in the horizontal direction.

The superstructure 20 has a base frame 21, on the front side of a vertical mast 26 is pivotally articulated. Furthermore, a driver's cab 22 for operating the earth-working device 10 is arranged on the front side of the superstructure 20. 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 further provided. These units are housed in a housing 24 of the upper carriage 20. The winches and hydraulic actuating cylinder for actuating the mast 26 are omitted in the illustration of FIG. 1 for reasons of clarity.

Between the undercarriage 12 and the superstructure 20, a sleeve-shaped extension segment 30 is arranged, through which the superstructure 20 is offset in the illustrated embodiment about 2 m upwards. On the outside of the sleeve-shaped extension segment 30, a support device 40 is attached to a central support ring 42. From the central support ring 42 crosswise four horizontal support arms 44 extend radially outward. The support arms 44 each protrude laterally beyond the undercarriage 12. At the free ends of the support arms 44, a vertical support 46 are respectively attached by means of a bolt connection. The vertical supports 46 each have an outer sleeve 47 in which a telescopic rod 48 is slidably guided and lockable. At the lower end of the telescopic rod 48, a plate-shaped support leg 50 is arranged, via which the earthworking device 10 in addition to the crawler tractors 16 can also be supported against the ground.

The earthworking implement 10 of FIG. 1 is illustrated in FIG. 2 as a drilling rig. Along the vertical mast 26 a drill drive 28 is guided vertically displaceable. With the drill drive 28, a drilling tool 60 can be driven in rotation via a rope-suspended Kelly bar 62. The drilling tool 60 is formed in the embodiment shown as a drilling bucket. When drilling By means of a drilling bucket it fills with removed drilling material. With a corresponding filling of the drilling bucket this must be pulled out of the well and emptied outside the well. For this purpose, usually pivots the upper carriage 20 relative to the undercarriage 12 to generally 180 ° to an emptying position. In the emptying position is located below the drilling bucket usually a truck, which receives the cuttings by opening the bottom of the drilling bucket and can transport this to a landfill. Subsequently, the drilling tool 60 is pivoted back into a drilling axis 64, so that the drilling tool 60 is lowered again and the bore can be driven forward.

An additional device 70, which is shown schematically as a box in FIG. 2, is arranged around the drilling point as the processing point.

Due to the arrangement of the sleeve-shaped extension segment 30 between the undercarriage 12 and the superstructure 20 of the superstructure 20 is offset from a surface of the soil upwards. As a result, an underside of the upper carriage 20 is arranged above an upper edge of the additional device 70. As a result, the superstructure 20 can be pivoted horizontally horizontally via a pivot bearing 32 at the upper end of the sleeve-shaped extension segment, without the superstructure 20 colliding with the additional device 70.

Referring to FIG. 3, the earth working apparatus 10 of FIG. 2 is shown in a highly schematic top view, with the attachment 70 formed as a casing machine 70.

In the illustration shown, the superstructure 20 is pivoted by 90 ° relative to the undercarriage 12. Furthermore, the supporting device 40 designed as a support cross is illustrated with four support arms 44. In the position shown, the superstructure 20 is in the working position at which the drilling tool 60 can be introduced through the additional device 70 into the ground.

According to FIG. 4, the auxiliary device 70 designed as a casing machine is shown in greater detail in accordance with FIG. The casing machine has a base frame 72, which drive units 74 for the additional screwing of drill pipes, which may have a diameter of 0.5 m to 3 m and more. The drive units 74 are in particular hydraulic cylinders with which the drill pipe to be inserted can be clamped and rotated. The base frame 72 is accessible and provided on its upper side with a parapet 76. Typically, such a casing machine has a height of 2 to 3 m.

With the earthworking device 10 designed according to the invention, efficient earthworking can be carried out without additional construction measures for lowering the additional device 70 or raising the earthworking device 10.

Claims

1. Erdbearbeitungsgerät with

- An undercarriage (12), which is designed as a chassis, and

- An upper carriage (20) which is rotatably mounted on the undercarriage (12) and a driver's cab (22) and a drive motor for the undercarriage (12),

characterized,

- That between the undercarriage (12) and the superstructure (20) an extension segment (30) is arranged through which a vertical distance between the undercarriage (12) and the superstructure (20) is extended, and

- That on the extension segment (30) between the undercarriage (12) and the superstructure (20) is mounted a support device (40) for anti-tip device.

2. Erdbearbeitungsgerät according to claim 1,

characterized,

that the extension segment (30) is sleeve-shaped.

3. Erdbearbeitungsgerät according to claim 1 or 2,

characterized,

that the extension segment (30) is non-rotatably connected to the undercarriage (12) and

that the superstructure (20) is rotatably mounted on the extension segment (30).

4. Erdbearbeitungsgerät according to any one of claims 1 to 3,

characterized,

in that the support device (40) has at least two support arms (44) which extend in a horizontal direction away from the extension segment (30), and

in that vertical supports (46) are arranged on the support arms (44).

5. Erdbearbeitungsgerät according to claim 4,

characterized,

that the support arms (44) are directed opposite to each other and protrude laterally beyond the undercarriage (12).

6. Erdbearbeitungsgerät according to claim 4 or 5,

characterized,

in that the vertical supports (46) each have a support foot (50) which is designed to be vertically telescopic.

7. Erdbearbeitungsgerät according to any one of claims 4 to 6,

characterized,

in that the support device (40) has four support arms (44) which are designed as a support cross.

8. Erdbearbeitungsgerät according to any one of claims 1 to 7,

characterized,

the extension segment (30) has a height of at least 0.5 m, preferably 1 m to 4 m.

9. Erdbearbeitungsgerät according to any one of claims 1 to 8,

characterized,

that the undercarriage (12) is designed as a crawler chassis.

10. Erdbearbeitungsgerät according to any one of claims 1 to 9,

characterized,

that this is designed as a drill with a mast (26), along which a drill drive (28) is mounted vertically adjustable.

11. A method for earthworking, in which an auxiliary device (70) is arranged on a floor about a processing point, which has a predetermined height relative to the surface of the soil,

characterized,

that an earthworking device according to one of claims 1 to 10 is used for earthworking, wherein the superstructure (20) with the extension segment (30) to the surface of the soil has a distance which is greater than the height of the auxiliary device (70).

12. The method according to claim 11,

characterized,

that the earthworking is done as a drilling and a hole is made,

that a casing machine is provided around the bore as a processing point as an additional device (70) and

that at least one support tube is introduced into the bore with the casing machine.