Swivelling device for heavy parts in hydraulic engineering

摘要

The device has a pump which sucks water from that surrounding a bearing (31) supporting the heavy part and draws it into an intermediate room (39) under pressure. The heavy part is provided with a positioning motor for swivelling it, the motor and pump being driven rigidly in connection. A hysteresis arrangement (67) is located between the positioning motor and the heavy part. The positioning motor is formed as a first valve-cylinder unit (21) and the pump as a second valve-cylinder unit (22). The second cylinder unit is provided with two cylinder spaces (88,94), of which one is connected with the intermediate room and the other is connected with the surrounding water. At least one of the cylinder spaces is provided with a pressure regulator (97).