Device for damping vibrations, in particular, torsion vibration damper
View Patent ↗A device for damping vibrations, in particular a torsion vibration damper with a primary component and a secondary component, coupled together through a torque transfer device and a damping coupling device. The torque coupling device includes a ramp mechanism for converting a rotation of one of the two elements, primary component or secondary component, into an axial force proportional to the input moment, which acts upon the other element. A device for compensating the resulting axial forces for generating an opposing force, opposing the resulting axial force, wherein the input moment is designed for a mean input torque. A conversion device is also provided, which directly converts an occurring force difference between the resulting axial force and the opposite force into a control variable for operating an actuation device in the device for damping vibrations, whereby an adaptation of the opposite force is performed.
1. A device for damping vibrations comprising a torsion vibration damper with a primary component and a secondary component, coupled together through a torque transfer device and a damping coupling device, wherein the torque transfer device includes
a ramp mechanism for converting a rotation caused by an induction of an input element at one of the primary component and the secondary component into an axial force F axial proportional to the input element, wherein the axial force acting upon the other one of the primary component and secondary component is converted into a torque to be transferred, wherein the torque is supported by a device generating an opposing force F axial-opposing , opposing the axial force F axial at the other one of the primary component and secondary component, and wherein the torque is adjusted to a predefined mean input moment to be transferred; and
a conversion device converting an occurring force difference between the axial force F axial and the opposing force F axial-opposing directly into a control variable Y for operating an actuation device in the device for damping vibrations for changing the opposing force F axial-opposing .
2. The device for damping vibrations as recited in claim 1 wherein the force difference is converted at the conversion device into a travel distance s or an angle of displacement of the ramp mechanism.
3. The device for damping vibrations as recited in claim 1 wherein the secondary component further comprises a hydraulic control device including a device for generating the opposing force F axia-opposing , and the actuation device for changing the opposing force, the actuation device comprising an actuator coupled with the conversion device.
4. The device for damping vibrations as recited in claim 3 wherein the device for generating the opposing force F axail-opposing includes at least one piston element and a fillable pressure cavity fillable with pressure medium for loading the piston element, the piston element being selectively coupled through the actuation device with a pressure medium source or with a relief device or only with a storage.
5. The device for damping vibrations as recited in claim 4 wherein the actuation device includes a valve device having at least three operating positions, a first operating position for coupling the pressure cavity with the storage, a second operating position for coupling the pressure cavity with the pressure medium source and a third operating position for coupling the pressure cavity with the relief device.
6. The device for damping vibrations as recited in claim 5 wherein the valve device is a 3/3 way valve, wherein a piston element of the valve device functions as the actuation device and the 3/3 way valve being operated continuously.
7. The device for damping vibrations as recited in claim 4 wherein the conversion device is integrated in the piston element.
8. The device for damping vibrations as recited in claim 4 wherein the damping coupling device includes the storage disposed coaxial with the pressure cavity.
9. The device for damping vibrations as recited in claim 1 wherein the conversion device is formed by a ramp element of the ramp mechanism.
10. The device for damping vibrations as recited in claim 9 wherein the conversion device is integrated in the secondary component or in the ramp element.