| 摘要 |
The crank drive (10) has two coaxially aligned shafts (28,29) with opposite shaft ends (32), leaving a gap inbetween in which the end of the piston rod (17) connecting the piston (12) to the crank drive is supported on both sides. The coaxial axles of the shafts are arranged spaced out on a circular path and in rotary engagement with the shaft ends through pairs of gearwheels (18,30,19,31). The free end of the piston rod has a support shaft interacting with rotary supports that can comprise of discs freely rotating on the ends of the shafts. |
