| 摘要 |
Hydraulic driven turning device to be installed to a construction machine, like at the end of the boom of the power shovel whereupon a first body (1) and a second body (6) turning in relation to it belong to the turning device and a hydraulic cylinder attached from the mentioned bodies (1), (6) to another body belongs to the device in which cylinder the piston (5) can be moved axially back and forth with the help of a hydraulic pressure medium and a spiral part (2) is attached to the piston (5) which spiral part causes a rotation movement to its counter part (3) equipped with a spiral whereupon the mentioned rotation movement can be transferred to be a turning movement of another body. The piston (5) is arranged to be non rotating in the cylinder located in the body (1) by forming the cross section of the piston (5) and the cylinder to be deviant from a round form, like to be an oval or angular or by adjusting the piston (13) to be eccentric in relation to its bearing axle (2).
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