| 摘要 |
<p>A working organ of a helical-type down-hole drive consisting of either a rotor with external helical teeth or a stator with internal helical teeth. The working organ comprises separate sections (1) provided with successively arranged helical teeth (3) and interconnected by sleeves (2). Each sleeve (2) is provided with helical teeth (4) corresponding in pitch and direction to those of the helical teeth (3) of the sections (1) and equidistant from the latter in profile. This enables automatic orientation of the helical teeth sections of the working organ.</p> |
