Vibration exciter for construction machines
AssigneeABI Anlagentechnik-Baumaschinen-Industriebedarf Maschinenfabrik und Vertriebsgesellschaft mbH
InventorsAlbrecht Kleibl, Christian Heichel
Life of this patent
Estimating the term…
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.
Claims16
A vibration exciter for a construction machine comprising:
- (a) at least one axle having at least first and second imbalance masses;
- (b) at least one rotary piston pivot motor for changing of a rotational position of the first imbalance mass relative to the second imbalance mass, said rotary piston pivot motor comprising a pivot motor shaft integral with the at least one axle and a pivot motor housing mounted on the pivot motor shaft so as to rotate relative to the pivot motor shaft;
- and
- (c) at least one rotary vane disposed on the pivot motor shaft having an angle of rotation limited by at least one stop disposed on the pivot motor housing, said stop comprising first and second stop surfaces;
- wherein the angle of rotation has a maximal angle value of less than 160 degrees;
- wherein the pivot motor is configured as a single-vane rotary piston pivot motor and at least one of the first and second imbalance masses is formed by the pivot motor housing of the pivot motor, said pivot motor housing being configured in a shape of a circle sector and being disposed on the pivot motor shaft so as to rotate relative to the pivot motor shaft;
- and
- wherein at least one oil pocket for receiving oil is formed between the first and second stop surfaces of the stop opposite a pivot space of the rotary vane of the pivot motor defined by the angle of rotation.
Dependencies are inferred from the claim text.