| 摘要 |
A fluid motor 212 for a pneumatic or hydraulic drive system comprises: at least one piston means 226; at least one cylinder means 204a, 204b; motion conversion means and a sleeve means 205, 206. The or each cylinder and an end of the or each piston defines a chamber 234a, 234b.The or each cylinder is coupled to a pressure generation and transmission system arranged to cause alternating flow of fluid into and out of the or each chamber to cause reciprocating movement of the piston. The motion conversion means comprises: at least one portion (215) extending continuously and circumferentially around a central axis and extending in part longitudinally relative to the central axis, for example a non-linear groove, and at least one linking means 208a, 208b, 209a, 209b. The at least one portion and the or each linking means are relatively rotatable about the central axis. A one of the at least one linking means or the at least one portion is coupled to the at least one piston means so that reciprocating movement of the at least one piston means causes reciprocating movement thereof. |
