Bauer Maschinen Gmbh

Other

Sebastian Christoph Bauer

Leonhard Weixler

Ulli Wiedenmann

Andreas Schober

Christian Fischer

Dieter Stetter

Josef Gruber

Peter Bruederle

The present application relates to a Kelly bar arrangement for a drilling apparatus and a method for working the ground with the drilling apparatus. The arrangement includes a tubular outer Kelly bar and an inner Kelly bar which is displaceably supported inside the outer Kelly bar and has a rope suspension. The drilling torque can be transmitted between the outer Kelly bar and the inner Kelly bar. At least one line is arranged on the inner Kelly bar. A rotary feedthrough with a first attachment section and a second attachment section is arranged in a lower or upper end region of the inner Kelly bar. The rotary feedthrough includes a rotary device arranged for actively rotating the two attachment sections relative to each other.

Kelly bar arrangement for a drilling apparatus and method for working the ground

The invention relates to a working machine and a method for working the ground with the working machine, having a mast, along which, by means of a positioning means, a rotary head is moved vertically, by which a telescopic Kelly rod having at least two Kelly bars is displaced and guided. According to the invention the Kelly bars are locked or unlocked automatically by means of a control, wherein by means of a first detection means a rotation angle of at least one Kelly bar is detected and/or by means of a second detection means a force, torque or pressure change is detected in a hydraulic system. By the control a locking and/or unlocking of the Kelly bars is determined depending on the detected rotation angle and/or the detected change.

Working machine and method for working the ground

The invention relates to a trench cutter for producing a cut trench in the soil with a cutter frame, at least one pair of cutting wheels which are supported and driven in a rotatable manner on a lower end of the cutter frame, wherein each cutting wheel has a plurality of cutting teeth along its external circumference, and a discharge means with at least one discharge pump for discharging a cutting fluid from the cut trench in the region of the cutting wheels. According to the invention a switchover means is provided which is designed for switching the discharge means over to a flushing operation, in which a fluid flow generated by at least one discharge pump of the discharge means is generated onto at least one cutting wheel for flushing out the cutting wheel.

Trench cutter and method for producing a cut trench in the soil

The invention relates to a rotary drilling tool and to a method for producing a borehole in the ground, having a base body, a removal device which has at least one hammer unit which comprises a hammer element driven in axially reversing manner, and a discharge line for discharging removed ground material and drilling suspension. According to the invention it is provided that a pumping device is arranged on the base body along the discharge line, and that the pumping device is configured for pumping off the removed ground material with drilling suspension through the discharge line.

Rotary drilling tool and method for producing a bore

The invention relates to a drilling tool and a method for producing a bore in the ground, in which method ground material is carried away by a removal device on the underside of a main body of the drilling tool, flushing air is supplied by a feeding device into the bore, which is filled with drilling fluid, in the area of the removal device and ground material carried away by means of the flushing air is transported away through a discharge line. According to the invention, the ground material is transported to a receiving area in an upper section of the main body. A collecting hood is provided above the receiving area, which closes off the receiving area at the top, forming an air collecting space in which air collects. An outlet valve by means of which air is discharged from the air collecting space is arranged on the collecting hood.

Rotary drilling tool and method for producing a bore in the ground

The invention relates to a drilling apparatus for working the ground comprising a drill drive for driving a drill string in a rotating manner and a rotary feedthrough for passing a construction material from a construction material hose into the interior of the drill string, whereby the rotary feedthrough has a first line connection for the construction material hose and a second line connection, rotatable relative to the first line connection, for the drill string. In accordance with the invention provision is made for the rotary feedthrough to have a rotary device for actively rotating the second line connection relative to the first line connection. The invention also relates to a method for working the ground, which can be carried out, in particular, by means of a drilling apparatus according to the invention.

Drilling apparatus and method for working the ground

The invention relates to a telescopable boring rod mechanism with at least two mutually displaceable Kelly rods, which are equipped with means for transmitting a torque to the adjacent Kelly rod. At least one of the Kelly rods is constructed from at least two rod segments, which are made from a different material.

Telescopable boring rod mechanism

A pocket-size check writing device is disclosed with a means for positioning a check form in a writing position having a number of predetermined writing types composed of individual symbol elements and with a manually operable device for actuating the writing type and reproducing the symbols of the writing type such that each writing type is constructed as a mosaic writing head with the symbol elements being independent of one another and individually controllable and being disposed in relating to one another such that they can be assembled in groups for the predetermined writing symbols in such a format that at each writing location one mosaic writing head is immovably disposed and has an arrangement whereby a keyboard reproduces the writing symbols and a control unit is provided which associates individual mosaic writing heads with an appropriate set of keys.

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Schrobenhausen, Germany

Sebastian Christoph Bauer