| 摘要 |
The invention relates to a hydraulic drive, comprising a hydraulic cylinder ( 1 ), divided into a first operating pressure chamber ( 4 ) and a second operating pressure chamber ( 5 ), by an operating piston ( 3 ). The hydraulic drive further comprises a closed hydraulic circuit ( 39 ), with a first hydraulic pump ( 43 ), connected to the first operating pressure chamber ( 4 ) via a first working line ( 7 ), by means of a first connector ( 10 ) and to the second operating pressure chamber ( 5 ) via a second working line ( 13 ), by means of a second connector ( 12 ). In addition, an open hydraulic circuit ( 40 ) is provided, with a second hydraulic pump ( 8 ), connected to the first operating pressure chamber ( 4 ), by means of a third connector ( 11 ). A fourth connector ( 14 ) on the second hydraulic pump ( 8 ) is connected to a hydraulic reservoir element ( 75 ). |
