公开(公告)号：EP4134542A1

公开(公告)日：2023-02-15

申请号：EP22186418.4

申请日：2022-07-22

申请人： Black Bruin Oy

发明人： Albert, Laurent Eugène ,  Ylä-Mononen, Tero

IPC分类号： F03C1/047 ,  F04B1/10 ,  F04B1/1071

摘要： A radial piston hydraulic motor (20) comprising a hollow rotating shaft (21) inside the motor, which rotating shaft (21) is arranged to rotate around its axial central axis A for providing torque from the radial piston hydraulic motor, wherein the rotating shaft (21) comprises a piston frame (22) with pistons (23), which are arranged to move radially, the piston frame (22) comprises a distribution surface (24), which is a flat surface in parallel plane with the radial movement of the pistons (23), and a first inner surface (25) extending in axial direction around the axial central axis A, wherein
the rotating shaft (21) comprises a half shaft (26) having a second inner surface (27) extending in axial direction around the axial central axis A,
wherein piston frame (22) and the half shaft (26) are arranged adjacent to each other so that the first inner surface (25) and the second inner surface (27) form a surface, in axial direction, forming a cavity (28) inside the rotating shaft (21) for receiving a drive shaft.