Bauer Maschinen Gmbh

Bauer Spezialtiefbau Gmbh

Universitaet Bremen

Vsl International Ltd

Combilift

Universitat Bremen

Leonhard Weixler

Stefan Michael Finkenzeller

Erwin Emil Stoetzer

Ludwig Andreas Huber

Christian Herrmann

Sebastian Christoph Bauer

Maximilian Michael Arzberger

Ulli Wiedenmann

Dieter Stetter

Johannes Sedlmeier

Olivier Pierre Dominique Haye

Tim Freudenthal

Stefan Roth

Philippe Manuel De Sousa

Jürgen Klippenstein

Tobias Greindl

Peter Platzek

Johannes Wiener

Alexander Blatt

Daniel Flierl

Kurt Ostermeier

Bernd Verhoeven

Heiko Felderhoff

Erwin Emil Stötzer

Jürgen Rohland

The invention relates to a trench wall cutting device, to a trench cutter having a trench wall cutting device according to the invention, and to a method for cutting a cut trench using a trench cutter, which is constructed from at least two cutter modules, and at least one supply unit, which is connected to the cutter modules by means of cables. The first cutter module can be lowered into a guide trench before the second cutter module is placed onto the first cutter module. As a result, a cut trench can be created at a location with a restricted height, wherein in the trench the cutter has a guide height that is greater than the height of the site out of which the cut trench is generated.

Trench wall cutting device and method for cutting a cut trench in the ground

The invention relates to an underwater drilling device and to a method for procuring drill cores of a bed of a body of water, wherein an underwater drilling device with a base frame is lowered in a body of water and placed on a bed of a body of water. A drill string consisting of at least one tubular drill string element is drilled out into the bed of the body of water in a first drilling step with a drill drive, with a drill core being formed in a receptacle in the tubular drill string element and being received in a core barrel in the drill string element. According to the invention, the drill core is enclosed in pressure-tight manner in a receiving container on the basic cradle under water.

Underwater drilling device and method for procuring drill cores of a bed of a body of water

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

A trench wall apparatus includes a base frame held at its top end by a holding means held by at least one soil excavation means, which is positioned at a bottom end of the base frame. When soil is excavated while forming the trench, the trench wall apparatus is held by a clamping means that includes at least two clamping elements on opposite sides extended laterally by at least one actuating cylinder, whereby at least one part of the trench wall apparatus is clamped in the trench, and a pressing means applies a pressing force on the at least one soil excavation means. The clamping elements and clamping cylinder are positioned on an intermediate frame displaceably mounted along the base frame. The intermediate frame is clamped and fixed to the ground by the clamping means. The base frame having the soil excavation means is pressed downward by the pressing means.

Trench wall apparatus and method for creating a trench in the ground

The invention relates to a construction machine having a mast and a lifting element which can be moved up and down along the mast with a hoist rope. The hoist rope can be activated by means of two rope winches. At least one first rope winch is designed as a free fall winch, wherein the hoist rope can be lowered in free fall. To lower the hoist rope a controller is provided, with which the first rope winch, which is designed as a free fall winch, can be switched into a free fall mode. Meanwhile, a second rope winch is operated in force-locking manner.

Construction machine and method for upward and downward movement of a lifting element

The invention relates to underwater drilling for procuring and analyzing ground samples of a bed of a body of water. An underwater drilling device placed onto a bed of the body of water. By a drill drive a drill rod composed of at least one tubular drill rod element is drilled into the bed of the body of water in a first drilling step, wherein a drill core is received in a receiving part in the tubular drill rod element. The receiving part with the drill core is deposited in a storage place of a storage area on the base frame. Subsequently, one further drilling step is carried out with a further drill rod element. By means of sensor means at least one physical and/or chemical property of the drill core is determined. data on the storage place of the drill core in the second storage area.

Underwater drilling device and method for procuring and analyzing ground samples of a bed of a body of water

The invention relates to a guide frame for guiding a cutting apparatus within a pipe incorporated into the ground, having a framework body which can be inserted into the pipe and comprises a guide, along which the cutting apparatus can be displaced, a bracing means for tensioning and fixing the framework body in the pipe, and an adjusting means, with which the cutting apparatus can be adjusted within the pipe in a transverse direction relative to the pipe axis. The invention further relates to a method for anchoring a pipe in the ground.

Guide frame for guiding a cutting apparatus

The invention relates to a drilling device and a drilling method for drilling inside a casing tube with a drilling apparatus, which has a supporting frame with a fastening means for fixation with respect to the casing tube and a drilling tool, which is driven in a rotating manner via a telescopic rod by means of a drill drive arranged on the supporting frame. At the upper end of the casing tube a receiving part is arranged in accordance with the invention, onto which the supporting frame can be fastened. The receiving part is adjustably supported between a drilling position and an offset position, in which the receiving part is laterally offset with respect to the casing tube.

Drilling device and drilling method

A construction apparatus having an extendable mast with an upper mast element longitudinally displaceable relative to a lower mast element. A linear drive displaces the mast elements relative to each other, and has an upper drive part linearly actuable relative to a lower drive part of the linear drive, and a locking device for locking the two mast elements in an extended mast position. The upper drive part is fixable to the upper mast element, the lower drive part of the linear drive is displaceable longitudinally of the lower mast element and a securing device is provided on the lower mast element, with which the lower drive part is releasably securable to the lower mast element for displacement of the upper mast element. A method for operating a construction apparatus with an extendable mast can be carried out with a construction apparatus in accordance with the invention.

Construction apparatus with extendable mast and method for operating such a construction apparatus

The invention relates to a construction apparatus comprising a base carrier, a mast which is arranged on the base carrier in a pivotable manner, a first hydraulic cylinder and a second hydraulic cylinder for erecting the mast, which are connected to each other in an articulated manner in a connecting section, the first hydraulic cylinder being linked to the base carrier and the second hydraulic cylinder being linked to the mast, and a coupling rocker-arm which is linked on one side to the mast and on another side to the connecting section. According to the invention in the part of the connecting section a spacer is arranged, through which the connecting section is supported on the mast in a detachable manner.

Construction apparatus with pivotable mast

The invention relates to a construction machine, in particular a drilling and/or pile driving device, for foundation construction comprising a chassis and a leader arranged on the chassis for the longitudinally displaceable guidance of a drive head. Provision is made for the leader to be pivotable on the chassis by means of a pivot drive about a pivot axis that extends at least approximately parallel to the longitudinal axis of the leader. In accordance with the invention at least one locking element is provided which can be displaced between a first position, in which it fixes the leader around the pivot axis in a rotationally fixed manner on the chassis, and a second position, in which the leader is released. In addition, according to the invention a setting device is provided for the remote-controlled displacement of the locking element.

Construction machine for foundation construction

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

The invention relates to a displacement device, particularly for construction machines, having a guide, a carriage, which is displaceably mounted along the guide, and an operating cylinder for displacing the carriage. According to the invention, for increasing the buckling resistance, at least one support element is provided, being displaceably mounted both on the piston rod and on the guide or the carriage and that for preventing lateral buckling of the piston rod, on extending the said piston rod the support element is displaceable up to a predetermined support position on said piston rod.

Displacement device

A boring device for producing a bore with a casing tube has a linkage, a boring tool, which can be fixed to the lower end of the linkage, a mounting frame for mounting on the casing tube, a drive and a connecting device, which is used for producing a rotary connection between the casing tube and the mounting frame. The linkage is hollow and has a first and a second flushing line. In the vicinity of the upper end of the link-age are provided a first connection for the supply of a fluid to the first flushing line and a second connection for removing the borings via the second flushing line. A boring method introduced the casing tube into the soil prior to an excavation.

Boring device and boring method

The invention relates to a magazine and manipulation apparatus for drilling rod parts for a drill, having a rod magazine in which the drilling rod parts are received in a multi-layered arrangement in a store, and having a removal device for transferring the individual drilling rod parts from the rod magazine into a charging device which transports the drilling rod part to the drill and for returning the drilling rod parts from the charging device to the rod magazine. In this apparatus, the removal device is movably guided vertically and relative to the rod magazine on a guide and possesses a pivot mechanism having at least one gripping unit for the pick-up of a drilling rod part and by pivoting of the pivot mechanism, the drilling rod part retained in the gripping unit is moved between the position of transfer in the rod magazine and the charging device, and in which, by a vertical displacement of the removal device, the pivot mechanism with the gripping unit is adapted to the current, position-dependent position of transfer in the rod magazine and to the charging device.

Growing community of inventors

Thierhaupten, Germany

Leonhard Weixler