| 摘要 |
PURPOSE:To smoothen the advance and retreat of a vane and prevent abnormal abrasion by a method wherein the opening ends of semi-circular oil grooves, provided at the end faces of the counter-rotation side of respective vane grooves, and oil paths in both side blocks are aligned in accordance with the rotation of a rotor to supply pressure oil into the oil groove. CONSTITUTION:When both openings of respective semi-circular grooves 16e, provided at the counter-rotation side end faces 16d of respective vane grooves 20 and holes 14f, 15f, communicated with respective paths 14e, 15e of both side blocks 14, 15 are aligned in accordance with the rotation of the rotor 16, the oil is supplied forcibly from the holes 14f, 15f into the grooves 16e. The high pressure oil, supplied into respective grooves 16d, is supplied into a pressure-welded section between the counter-rotation side end face 20b of the vane 20 and the vicinity of the opening end of counter-rotation side end face 16d of the vane grooves 16b in accordance with the advance and retreat of the vane 20. According to this method, the advance and retreat of respective vanes 20 in respective vane grooves 16b is effected smoothly and abnormal abrasion of the end face 20b of the vane 20 as well as the seizing of the same to the pressure-welded section of the vane 20 or the like may be prevented. |
