| 摘要 |
PURPOSE:To secure an opening area at the supporting end of a main shaft as large as required for flow of lubricating oil from said opening without the need of increasing a diameter of said shaft supporting end by the diameter of the part of a push rod which is inserted from said opening smaller than that of the rest part. CONSTITUTION:A push rod 10 which is connected to a piston 9a of a hydraulic cylinder 9 is inserted into a shaft hole 13 from an opening 12 of a main shaft 4 until its end comes into contact with a working plate 7a of a clutch 7. Right movement of the piston 9a caused by oil supply into the hydraulic cylinder 9 forces the working plate 7a to be pushed rightward via the push rod 10 against a clutch engaging spring 7b, thus disengaging the clutch 7. The push rod 10 has a small diameter part 10a which is placed inside the opening 12 at the shaft supporting end of the main shaft 4, whereby securing an opening area required for flow of lubricating oil into the opening 12 without the need of increasing a diameter of the shaft supporting end 4a. In addition, the small diameter part will not cause so much reduction in rigidity of the entire push rod 10. |
