Abstract: An arrangement including an object with an opening and a lifting end piece for connecting a lifting means to the object. The lifting end piece has a pin, which extends through the opening, with an attachment point for connecting the lifting means. The lifting end piece also has a shield connected to the pin and aligned transversely to the orientation of the pin. The base of the shield is configured to be larger than the opening of the object such that, when the pin is inserted through the opening of the object and the lifting end piece is lifted at its attachment point, the shield is supported on the material of the object surrounding the opening and in this way the object is raised. The support surface of the shield, which faces in the direction of the pin, is designed to taper starting from the pin towards its edge.

Abstract: An arrangement with a lock and an anchor for forming a lifting connection for lifting a load. The anchor has a pin connectable to the load, and an anchor head that adjoins the pin and projects beyond the pin transversely to its longitudinal extension. The lock has an elongated hole with an insertion section and a holding section adjoining the insertion section and differing in its clear width from the insertion section. The elongated hole has a cross section in its insertion section such that the anchor head, in an insertion position, can be guided through this cross section, and the anchor inserted into the insertion section is rotatable around the longitudinal axis of the pin. The anchor head cannot be guided out of the insertion section in a locking position which is rotated by a certain angular amount around the longitudinal axis of the pin relative to the insertion position.

Abstract: A civil engineering device, in particular a pile-driving or drilling device, has at least one positioner, in particular a working carriage for accommodating an implement, connected with a carrier device by relatively movable links within a kinematic chain and connected by joints and/or linear adjusters and with at least six actuators for changing their corresponding position and/or orientation, and with a control and regulation device for controlling them. The control and regulation device has an input module for specifying a positioner target position, and is connected with a computer module that determines at least one displacement path for moving the positioner from its current (starting) position to the target position, and, using inverse kinematics, the locations of the individual actuators required for implementing the path, and sends these locations to the control and regulation device to control the actuators. A method multi-dimensionally, free positions a civil engineering device positioner.

Abstract: A vibro replacement probe includes a ramming tube that is connected with a filling piece that includes a feed tube as well as a filling funnel and/or a hose connection flange. The feed tube is firmly connected with a vibrator that has a mechanism for pivoting attachment to the leader of a construction machine, wherein the mechanism includes a connection part that is connected with the vibrator so as to pivot and that can be attached to a carriage that is displaceably guided on the leader. Furthermore, a construction machine has such a vibro replacement probe and a method equips a leader of a construction machine with such a vibro replacement probe.

Abstract: A vibro replacement probe includes a ramming tube that is connected with a filling piece that includes a feed tube as well as a filling funnel and/or a hose connection flange. The feed tube is firmly connected with a vibrator that has a mechanism for pivoting attachment to the leader of a construction machine, wherein the mechanism includes a connection part that is connected with the vibrator so as to pivot and that can be attached to a carriage that is displaceably guided on the leader. Furthermore, a construction machine has such a vibro replacement probe and a method equips a leader of a construction machine with such a vibro replacement probe.

Abstract: A construction machine for special civil engineering, includes a leader on which an advancing carriage is guided, which carriage has a holder for a work device, in particular a drilling implement or pile-driving implement, and which carriage is connected with a first drive, by way of which it can be moved along the leader. An additional auxiliary carriage is arranged on the leader, which carriage can be moved along the leader by way of a second drive, wherein at least one actuator and/or at least one sensor is/are arranged on the auxiliary carriage.

Abstract: A construction machine for special civil engineering has a leader on which an advancing carriage is guided, which carriage has a holder for a work device, in particular a drilling rig or pile-driving implement, and which can be moved along the leader by way of a first advancing cable (upper cable) and a second advancing cable (lower cable), by way of a drive winch or a drive cylinder, wherein the advancing carriage is connected with the advancing cables and wherein at least one of the advancing cables is attached to a fixed point on the leader and/or the advancing carriage, wherein at least one fixed point is formed by a cable tensioner attached to the leader or the advancing carriage. At least one cable tensioner includes a tensioning drum on which an end-side section of an advancing cable is attached with multiple cable windings.

Abstract: A civil engineering device, in particular a pile-driving or drilling device, has at least one positioner, in particular a working carriage for accommodating an implement, connected with a carrier device by relatively movable links within a kinematic chain and connected by joints and/or linear adjusters and with at least six actuators for changing their corresponding position and/or orientation, and with a control and regulation device for controlling them. The control and regulation device has an input module for specifying a positioner target position, and is connected with a computer module that determines at least one displacement path for moving the positioner from its current (starting) position to the target position, and, using inverse kinematics, the locations of the individual actuators required for implementing the path, and sends these locations to the control and regulation device to control the actuators. A method multi-dimensionally, free positions a civil engineering device positioner.

Abstract: An underground construction device includes a hydraulic assembly having an internal combustion engine and a hydraulic pump driven by the internal combustion engine, a work device connected with the hydraulic assembly in a hydraulic circuit for introducing material to be pile-driven into the ground, a clamping apparatus connected with the work device for holding a material to be pile-driven, in clamped manner, which device has a hydraulic clamping cylinder, as well as a controller for opening and closing the hydraulic clamping apparatus. A further hydraulic pump for building up the clamping pressure of the clamping cylinder of the clamping apparatus is provided, which pump is operated by an electric motor. A method operates such an underground construction device.

Abstract: An underground construction device includes a hydraulic assembly having an internal combustion engine and a hydraulic pump driven by the internal combustion engine, a work device connected with the hydraulic assembly in a hydraulic circuit for introducing material to be pile-driven into the ground, a clamping apparatus connected with the work device for holding a material to be pile-driven, in clamped manner, which device has a hydraulic clamping cylinder, as well as a controller for opening and closing the hydraulic clamping apparatus. A further hydraulic pump for building up the clamping pressure of the clamping cylinder of the clamping apparatus is provided, which pump is operated by an electric motor. A method operates such an underground construction device.

Abstract: A work device having a hydraulic drive for civil engineering work, in particular a drilling device or vibration pile-driving device, includes a hydraulic motor that is operated by way of a fluid of a hydraulic circuit, which circuit is supplied by way of a hydraulic pump, which pump is driven by an internal combustion engine, wherein at least one heat transfer unit for transfer of thermal energy of a fluid stream of the internal combustion engine to the fluid of the hydraulic circuit is provided. A method temporarily heats the hydraulic fluid of the hydraulic circuit of such a work device.

Abstract: A vibration exciter, particularly for a vibration pile driver, includes at least four shafts disposed parallel to one another, on which two outer imbalance masses are disposed, in each instance, between which a central imbalance mass is positioned. The central imbalance mass is mounted on the shaft so as to rotate relative to the outer imbalance masses, in each instance. The imbalance masses of the at least four shafts are combined into two imbalance groups, the imbalance masses of which are all synchronized with one another in torsionally rigid manner, in each instance, wherein not only outer imbalance masses but also inner imbalance masses are provided in each of the two imbalance groups, and wherein a phase shifter is provided, by way of which the phasing of the two imbalance groups relative to one another can be adjusted.

Abstract: An apparatus for pile-driving or drilling, particularly a foundation machine, including at least one hydraulic drilling or vibration drive, which is connected with a control block in an open hydraulic circuit, by way of which drive at least one further consumer can be operated. The drive is connected with a pump by way of a first feed line and with a tank by way of a first return line. The hydraulic drive is additionally connected directly with the pump by way of a second feed line, and directly with the tank by way of a second return line.

Abstract: A drilling table for a drilling rig has an accommodation sleeve that can be rotated via a rotational drive for accommodation of a Kelly rod provided with driving contours. Coupling elements are disposed on the inside wall of the accommodation sleeve for engagement into the driving contours of the Kelly rod for transfer of torque and bias forces. Broken-out areas are introduced into the accommodation sleeve, through which areas the coupling elements that can be inserted from the outside are passed, to project into the sleeve interior. A drilling rig has such a drilling table.

Abstract: A device having a hydraulic drive for civil engineering work has least one shaft that can be rotated by a hydraulic motor. The hydraulic motor is operated by fluid of a hydraulic circuit that is supplied by a hydraulic pump. The hydraulic motor has a changeable displacement, and means for changing the volume stream are provided. A sensor for measuring the fluid pressure is disposed in the hydraulic circuit, and is connected with a control and regulation unit, by way of which the displacement of the hydraulic motor is adjustable, and by way of which the means for a change in the volume stream can be turned on. The control and regulation unit is set up so that in the event of a pressure drop in the hydraulic circuit, a reduction in the displacement of the hydraulic motor as well as a reduction in the volume stream is brought about.

Abstract: A vibration exciter for construction machines, particularly for vibration pile drivers, includes at least one axle having at least two imbalance masses. At least one rotary piston pivot motor is provided, by way of which the rotational position of at least one imbalance mass, relative to the at least one other imbalance mass, can be changed. The rotary piston pivot motor has a pivot motor housing that is mounted on a pivot motor shaft so as to rotate relative to it. At least one rotary vane is disposed on the pivot motor shaft, the angle of rotation of which vane is limited by at least one stop disposed on the pivot motor housing. The maximal angle of rotation of the at least one rotary vane amounts to less than 160 degrees, preferably 150 degrees or less.

Abstract: An apparatus for pile-driving or drilling, particularly a foundation machine, including at least one hydraulic drilling or vibration drive, which is connected with a control block in an open hydraulic circuit, by way of which drive at least one further consumer can be operated. The drive is connected with a pump by way of a first feed line and with a tank by way of a first return line. The hydraulic drive is additionally connected directly with the pump by way of a second feed line, and directly with the tank by way of a second return line.

Abstract: A vibration exciter, particularly for a vibration pile driver, includes at least four shafts disposed parallel to one another, on which two outer imbalance masses are disposed, in each instance, between which a central imbalance mass is positioned. The central imbalance mass is mounted on the shaft so as to rotate relative to the outer imbalance masses, in each instance. The imbalance masses of the at least four shafts are combined into two imbalance groups, the imbalance masses of which are all synchronized with one another in torsionally rigid manner, in each instance, wherein not only outer imbalance masses but also inner imbalance masses are provided in each of the two imbalance groups, and wherein a phase shifter is provided, by way of which the phasing of the two imbalance groups relative to one another can be adjusted.

Abstract: A telescoping leader for a construction vehicle for accommodating a vibrator, pile driver, earth drilling gear mechanism, or the like, has an outer leader that is disposed so that it can be longitudinally displaced relative to an inner leader. The inner leader and outer leader have closed material cross-sections, and the outer leader surrounds the inner leader. At the end of the outer leader that can be displaced on the inner leader, and at the end of the inner leader that is guided in the outer leader, a guide is firmly disposed, on which the outer leader can be displaced.

Abstract: A vibration exciter for construction machines, particularly for vibration pile drivers, includes at least one axle having at least two imbalance masses. At least one rotary piston pivot motor is provided, by way of which the rotational position of at least one imbalance mass, relative to the at least one other imbalance mass, can be changed. The rotary piston pivot motor has a pivot motor housing that is mounted on a pivot motor shaft so as to rotate relative to it. At least one rotary vane is disposed on the pivot motor shaft, the angle of rotation of which vane is limited by at least one stop disposed on the pivot motor housing. The maximal angle of rotation of the at least one rotary vane amounts to less than 160 degrees, preferably 150 degrees or less.