| 摘要 |
The present invention relates to a system, lifting column and method for an energy efficient lifting and lowering a load, such as a vehicle. The system according to the invention comprises:
- a lifting column (4) comprising a frame (10,14) with a movable carrier (16) and a drive which acts on the carrier, wherein the drive comprises a power source (58) for power supply to a motor (44);
- a pump (42) in an ascent mode driven by the motor and in a decent mode driving the motor as a generator for energy-recovery; and
- motor control means (54,70) for control of the motor, the motor control means arranged such that the power supply to the motor is manipulated for speed control of the carrier in at least the ascent mode. |
