| 摘要 |
The invention relates to a hydraulic actuation device (1) for a brake device of a wind turbine, comprising a hydraulic control line (10) which runs from a connection (5) for a hydraulic system circuit (P) of a wind turbine to a connection (6) for at least one brake cylinder (2) of a brake device, wherein at least one throttle (13) or diaphragm is arranged in the control line (10). The invention further relates to a corresponding brake device, to a wind turbine and to a method for braking a shaft (4) of a wind turbine. The invention is characterised in that at least one branch line (14) having a pressure regulation member (15) is provided, wherein said branch line branches off from the control line (10) upstream of the throttle (13) or diaphragm in the pressure build-up direction, bypassing the throttle (13) or diaphragm, and leads back into the control line (10) downstream of the throttle (13) or diaphragm, wherein the pressure regulation member (15), which is open when the pressure is low on the output side, closes when the pressure prevailing at the pressure regulation member (15) on the output side of the pressure regulation member (15) exceeds a preset or presettable closing pressure (Ps). |
