Abstract: Bearing arrangement for a shaft rotatable around an axis of rotation comprising a first bearing for rotatably mounting an end of the shaft for rotation thereof around the axis of rotation, and a second bearing for pivotably mounting the end of the shaft for pivoting movements out of the axis of rotation, and an arrangement comprising a shaft, as well as an oscillator, each comprising the bearing arrangement.

Abstract: A tubular drive has a hollow shaft and at least one drive wheel mounted on the hollow shaft so as to rotate. The hollow shaft is rotatably mounted in a flange. An electric motor with an integrated generator is supplied for relative rotational adjustment of the drive wheel on the hollow shaft. A vibration exciter, particularly for a vibration pile driver, has at least two axles disposed parallel to one another, as well as at least two imbalance masses, which are attached on one or more of the axles. There is at least one such tubular drive for adjusting the relative rotation position of the imbalance masses with regard to one another.

Abstract: A vibration generator has at least two shaft groups, on which at least two imbalance groups are disposed, and which are connected with at least one drive by means of which they are put into rotation. The shaft groups are connected with the at least one drive so that the speed of rotation of one shaft group amounts to a multiple of at least one other shaft group, and the shaft groups demonstrate a significantly different static moment with regard to one another. At least one of the shaft groups is connected with a phase shifter, by way of which the static moment of the shaft group can be adjusted.

Abstract: A vibration generator has a piston guided in linear manner, which is connected with a crankshaft by way of a connecting rod. The piston is connected with the connecting rod by way of a piston pin bearing, and the crankshaft is connected with the connecting rod by way of a crank journal. The crank journal bearing is disposed within the piston pin bearing.

Abstract: A vibration exciter has at least two axles disposed parallel to one another, as well as at least two imbalance masses, which are attached to one or more of the axles. The relative rotary position of the imbalance masses can be adjusted relative to one another by a rotary oscillating motor having a rotor shaft and a stator housing. The rotor shaft is an integral part of one of the axles, and the rotary position of the stator housing relative to the rotor shaft can be changed. The stator housing can be locked to the rotor shaft. The oscillating motor has a rotor shaft and a stator housing, between which working chambers are formed. The stator housing can rotate about the rotor shaft and can be locked relative to the rotor shaft.

Abstract: A vibration generator has two groups of shafts, on which at least two groups of imbalances are disposed, and which are connected with at least one drive, by means of which they are put into rotation. The shaft groups are connected with the at least one drive in such a manner that the speed of rotation of one shaft group amounts to half the speed of rotation of the other shaft group, and the ratio of the static moments of the shaft groups provided with the imbalance groups amounts to between six to one and ten to one.

Abstract: A vibration generator has at least two groups of shafts, on which at least two groups of imbalances are disposed, and which are connected with at least one drive that rotates the shafts relative to one another, at different speeds of rotation, thereby achieving a directed advance. The operating direction of the vibration generator can be adjusted.

Abstract: A vibration generator for a vibration pile driver has imbalance masses that can rotate and which are disposed on shafts. The rotational position of the imbalance masses can be adjusted relative to one another. A control and regulation circuit is provided, which has the following components: a memory unit for storing ground composition data sets or task-specific default data sets with defined operational characteristic variables; sensors for continuous detection of the defined operational characteristic variables; an evaluation unit for comparing the operational characteristic variables that are determined with the operational characteristic variables of the selected default data set; a regulation device for regulating the vibration generator; and a control device for controlling the means for adjusting the rotational position of the imbalance masses relative to one another. The vibration generator is part of a vibration pile driver.

Abstract: A vibration generator for a vibration pile driver, comprises imbalance masses that can rotate, which are disposed on shafts. A hydraulic drive having a changeable suction volume is disposed on the generator. A vibration pile driver consists of the vibration generator and a mast for movably supporting the vibration generator and/or an accommodation for a pile-driven material.

Abstract: A vibration generator has rotatable imbalance masses disposed on at least two shafts, in which means for adjusting the rotational position of the imbalance masses relative to one another are disposed. There is at least one sensor for determining the angular acceleration of the rotating imbalance masses. The sensors may also determine acceleration of the vibration generator. There is a module for determining the angular acceleration of the rotating imbalance masses on the basis of the measurement values determined by the sensors. A vibration pile driver for introducing elements to be pile-driven into the ground, and drawing them from the ground, as well as for compacting ground material, contains one of the aforementioned vibration generators.

Abstract: A vibration exciter, particularly for a vibration pile driver, comprising at least two axles disposed parallel to one another, as well as at least two imbalance masses, which are attached to one or more of the axles. The relative rotary position of the imbalance masses can be adjusted relative to one another by at least one rotary oscillating motor having a rotor shaft and a stator housing. The rotor shaft is an integral part of one of the axles, and the rotary position of the stator housing relative to the rotor shaft can be changed. The stator housing can be locked to the rotor shaft. An oscillating motor suitable for use in a vibration exciter, comprises a rotor shaft and a stator housing, between which working chambers are formed. The stator housing can rotate about the rotor shaft and can be locked relative to the rotor shaft.

Abstract: A vibration exciter, particularly for a vibration pile driver, comprises at least two axles disposed parallel to one another, as well as at least two imbalance masses, which are attached to one or more of the axles. The relative rotary position of the imbalance masses can be adjusted relative to one another by at least one rotary oscillating motor having a rotor shaft and a stator housing. The rotor shaft is an integral part of one of the axles, and the rotary position of the stator housing relative to the rotor shaft can be changed. The stator housing has at least one closure lid that is at least partially unreleasably coated with a slide alloy, for radial and axial bearing of the rotor shaft. At least one shaft seal is disposed between the rotor shaft and stator housing. The seal is hydraulically biased and provided with a support element.

Abstract: A multiple press with adjustable spacings includes at least three press units disposed parallel to one another and a common horizontally disposed rail with each press unit being displaceable on the common horizontally disposed rail, along with a drive mechanism, with at least two press units press units being connected to one another by way of the drive mechanism. Each press unit includes a ram that is able to be displaced in a vertical guide by way of a hydraulic cylinder and with a collet on a lower face of the ram.

Abstract: A vibratory apparatus for piling and extracting piles includes bearings for rotating unbalanced masses, with the unbalanced masses being arranged in a bearing flange by way of a bearing journal and a bearing bush, or with bearings for shafts, on which the unbalanced masses are mounted. The bearings are fluid-lubricated bearings with each bearing bush having at least two radially-extending channels, or bearing bush channels. Each bearing bush further includes radially-extending grooved recesses on, at least, one face thereof or, in the alternative, such recesses are formed in axial bush-adjacent stop faces of the unbalanced masses, or shafts, which are arranged in the bearings and the bearing journal, or shaft surface, surrounded by the bearing bush, and having at least one grooved recess.