Oscillation Exciter
AssigneeWacker Construction Equipment AG
InventorMartin Awrath
Life of this patent
Estimating the term…
Abstract
An oscillation exciter, in particular for a vibration plate, has a rotating unbalanced mass (3) for producing a non-directional oscillation which is transmitted to a ground contact element (1). In order to transmit the oscillation to the ground contact plate (1), a transmission device (7, 8) is provided, which connects the unbalanced shaft (3) to the ground contact element (1) and by means of which the non-directional oscillation of the unbalanced shaft (3) can be converted to a directional oscillation for the ground contact plate (1). The transmission device (7, 8) is designed such that, with respect to an oscillation plane, it has different and variable stiffnesses in different directions within the oscillation plane.
Claims20
1-24. (canceled)
A vibration plate for soil compaction, comprising:
- an oscillation exciter having at least one unbalanced mass that is driven rotationally about at least one unbalanced axis in order to produce a non-directional oscillation;
- a soil contact plate that is excited by the oscillation exciter;
- a transmission device that connects the unbalanced mass to the soil contact plate in order to transmit the oscillation to the soil contact plate;
- wherein
- through the transmission device, non-directional oscillation from the unbalanced mass is capable of being converted into an essentially directional oscillation, modifiable with regard to its direction and/or intensity, for the soil contact plate;
- wherein
- the direction and/or the intensity of the directional oscillation is capable of being modified during operation by an operating element or a control device;
- wherein
- the transmission device has at least two connection devices situated in a transmission path of the oscillation from the unbalanced mass to the soil contact plate;
- wherein
- the stiffness of at least one of the connection devices is independent of the stiffness of the other connection device;
- and wherein
- the modification of the stiffness of the one connection device relative to a spatial direction can be accomplished by pivoting the one connection device about the axis of rotation of the unbalanced mass.
The vibration plate as recited in claim 24, wherein, in a particular operating state, the connection devices are controllable in such a way that the stiffnesses of the connection devices are equal.
A vibration plate for soil compaction, comprising:
- an oscillation exciter that includes at least one unbalanced mass that is driven rotationally about at least one unbalanced axis in order to produce a non-directional oscillation having an oscillation intensity that is at least generally equal in all directions;
- a soil contact plate that is excited by the oscillation exciter;
- a transmission device that transmits the oscillation to the soil contact plate from the unbalanced mass, the transmission device converting the oscillation imposed on the soil contact plate to an essentially directional oscillation having an oscillation intensity that is greater in at least one direction than in at least one other direction, the transmission device including at least two connection devices situated in an oscillation transmission path leading from the unbalanced mass to the soil contact plate, the stiffness of at least one of the connection devices being independent of the stiffness of the other connection device;
- and
- a control device or an operating element that is operable during operation of the vibration plate to pivot the one connection device about the axis of rotation of the unbalanced mass to modify the stiffness of the one connection device relative to a spatial direction and modify at least one of the direction and the intensity of the directional oscillation.
Dependencies are inferred from the claim text.