The invention relates to a vibratory pile-driving apparatus having a carrier implement with a mast, on which, for the purpose of generating vibrations, a vibration generator with a transmission housing is supported, in which at least one pair of rotatably supported unbalanced units is arranged that are driven in a rotating manner by at least one rotary drive. According to the invention provision is made in that the transmission housing is surrounded by a soundproof housing, in which the transmission housing is supported by way of damping elements, and in that from the transmission housing at least one oil supply line and one oil discharge line are led out of the soundproof housing, wherein transmission oil can be cooled outside the soundproof housing.

The invention relates to a vibration generator having at least one shaft which can be driven in a rotating manner and on which at least one unbalanced unit is arranged that is constructed of at least two weight elements, of which a first weight element is firmly mounted on the shaft and a second weight element is supported in a radially adjustable manner which, depending on the speed of rotation of the shaft, is adjustable between a radially internal first position and a radially external second position. According to the invention a locking means is provided, through which the adjustable second weight element is secured in the first position up to a predetermined triggering speed of rotation of the shaft and, on reaching the triggering speed of rotation, is released and adjustable.

The invention relates to a vibration generator having at least one shaft which can be driven in a rotating manner and on which at least one unbalanced unit is arranged that is constructed of at least two weight elements, of which a first weight element is firmly mounted on the shaft and a second weight element is supported in a radially adjustable manner which, depending on the speed of rotation of the shaft, is adjustable between a radially internal first position and a radially external second position. According to the invention a locking means is provided, through which the adjustable second weight element is secured in the first position up to a predetermined triggering speed of rotation of the shaft and, on reaching the triggering speed of rotation, is released and adjustable.

Hammering device meant for hammering poles, steel profiles and other elongated objects into the ground which hammering device comprises a body (1) which can be attached to a power tool, a vibrator device (6) which is attached to the body (1) with the help of damping cushions (9) and movable gripping jaws (10) which are adjusted to the mentioned vibrator device (6) in order to grip the object to be hammered at least with a side grip wherein the gripping elements (23) of the gripping jaws (10) can be brought closer and farther away with the help of a regulating unit, such as a hydraulic cylinder (16). In order to maintain the mutual symmetry of the gripping jaws (10) during their movement the gripping jaws (10) essentially comprise arms (2), (3) which are attached to be stiff at the location of the turning joints (8) of the gripping jaws which arms are directed in such a way that the ends of the arms (2), (3) are located next to each other and stay essentially next to each other during the turning movements meant for the gripping jaws (10), and in that the ends of the mentioned arms (2); (3) are connected to each other with the help of a short arm (4) which has a pivot mounting.

Hammering device meant for hammering poles, steel profiles and other elongated objects into the ground which hammering device comprises a body (1) which can be attached to a power tool, a vibrator device (6) which is attached to the body (1) with the help of damping cushions (9) and movable gripping jaws (10) which are adjusted to the mentioned vibrator device (6) in order to grip the object to be hammered at least with a side grip wherein the gripping elements (23) of the gripping jaws (10) can be brought closer and farther away with the help of a regulating unit, such as a hydraulic cylinder (16). In order to maintain the mutual symmetry of the gripping jaws (10) during their movement the gripping jaws (10) essentially comprise arms (2), (3) which are attached to be stiff at the location of the turning joints (8) of the gripping jaws which arms are directed in such a way that the ends of the arms (2), (3) are located next to each other and stay essentially next to each other during the turning movements meant for the gripping jaws (10), and in that the ends of the mentioned arms (2); (3) are connected to each other with the help of a short arm (4) which has a pivot mounting.

A vibrator assembly comprising a feed pipe that has a longitudinal axis as well as a first end and a second end. The vibrator assembly may further comprise a vibrator unit that is mechanically coupled to the feed pipe, and a filling assembly which extends into the feed pipe at the first end and is designed to pick up material and direct same into the feed pipe. The feed pipe may have at least two separate channels from the first end to the second end and parallel to the longitudinal axis.

A vibrator assembly comprising a feed pipe that has a longitudinal axis as well as a first end and a second end. The vibrator assembly may further comprise a vibrator unit that is mechanically coupled to the feed pipe, and a filling assembly which extends into the feed pipe at the first end and is designed to pick up material and direct same into the feed pipe. The feed pipe may have at least two separate channels from the first end to the second end and parallel to the longitudinal axis.

The invention is directed to a foundation pile (1) comprising a tubular housing (2) having an upper end (3) and an open lower end (4) and wherein at the upper end or near or at the open lower end (4) vibration means are present and wherein at the open lower end means (6) to discharge a fluid into the interior space (20) of the tubular housing and means (7) to discharge a fluid from the lower end (4) of the tubular housing (2) in a direction which has a downward directional component. The means (6) to discharge a fluid into the interior space (20) of the tubular housing have can fluidise the soil present in this interior space.

The invention is directed to a foundation pile (1) comprising a tubular housing (2) having an upper end (3) and an open lower end (4) and wherein at the upper end or near or at the open lower end (4) vibration means are present and wherein at the open lower end means (6) to discharge a fluid into the interior space (20) of the tubular housing and means (7) to discharge a fluid from the lower end (4) of the tubular housing (2) in a direction which has a downward directional component. The means (6) to discharge a fluid into the interior space (20) of the tubular housing have can fluidise the soil present in this interior space.

A pile driving system having a body, a body connection arrangement connecting the body to construction equipment, two arms on the body at least one of which is movable, and a jaw at the end of the arms having a jaw recessed connection surface formed at the inner portion of the jaw, and at least one shoe having the shoe recessed connection surface creating a symmetric profile so as to overlap the jaw recessed connection surface and corresponding to it when attached.