Pneumatic-spring percussion mechanism with a variable rotary drive
AssigneeWacker Neuson Produktion GmbH & Co. KG
InventorsHelmut Braun, Rudolf Berger
Life of this patent
Estimating the term…
Abstract
A percussion mechanism that has a motor, a drive piston which can be moved to and fro in a guide cylinder by the motor, and a percussion piston. A coupling device is active between the drive piston and the percussion piston, via which coupling device the movement of the drive piston is transmitted to the percussion piston. The motor can be configured as a reluctance motor or as a synchronous motor. The motor can be actuable in such a way that different rotational speeds of the rotor can be generated within a percussion cycle and/or from percussion cycle to percussion cycle.
Claims15
A percussion mechanism, comprising:
- a drive with a motor and a rotor provided in the motor;
- a drive element that is driven back and forth in a guide unit by the drive;
- a percussion element;
- and
- a coupling device that acts between the drive element and the percussion element and that permits the transfer of the movement of the drive element to the percussion element;
- said motor being controllable so as to generate variable rotor speeds within one percussion cycle;
- the motor being controllable so as to achieve, within one percussion cycle, a change of rotor rotational speed corresponding to an algorithm that is pre-selected for the rotor, and wherein
- said algorithm selects a movement of the rotor as a function of an actual movement of the percussion element.
A percussion mechanism, comprising:
- a drive with a motor and a rotor provided in the motor;
- a drive element that is driven to move back and forth in a guide unit by the drive;
- a percussion element;
- and
- a coupling device that acts between the drive element and the percussion element and that transfers the movement of the drive element to the percussion element;
- said motor being controllable to generate variable rotor speeds in at least one of 1) within one percussion cycle and 2) from percussion cycle to percussion cycle;
- said motor being controllable so as to allow, within a percussion cycle, the motor to rotate in a first direction, then stop, and then rotate in the opposite direction.
Dependencies are inferred from the claim text.