| 摘要 |
<p>The feed and drive mechanism has a rigid helical gear or rotor turning on a moving spindle inside a stator. The stator is complementary in shape to the rotor and has a coarse-pitch helix with radiused lands. It has a rigid driving shaft turning on a fixed axis, a rigid intermediate shaft turning on an axis travelling in a cone pattern, and universal joints coupling the intermediate shaft to the driving and rotor shafts at opposite ends. The driving shaft (6) is extended by a hollow sleeve (10) long enough to accommodate most of the intermediate shaft (7), and of internal diameter sufficient to accommodate the angular deflections of the latter. The free end of this sleeve is close to the universal joint (9) coupling the intermediate shaft to a trunnion (5) on the rotor (4) of the pump (A).</p> |
