| 摘要 |
FIELD: oil and gas extractive industry. ^ SUBSTANCE: device has body with lids and inner force hollow, wherein bar rod pump is placed. Cylindrical dies are placed in body with possible contrary movement, forming a profiled locking connection to rod of rod pump and between each other. Cylindrical dies are jointly, with possible relative rotation, are connected to leading rods, which together with body and lids form hollows of dies drives. End surfaces of dies form a profiled locking connection, which has sinusoidal two-period shape with height of profile equal to diameter of rod. In dies along their axes moving plungers are placed forming two auxiliary hollows with them, one of which is connected by channels in cylindrical dies to force hollows, and another is connected by channels in leading rods to drives hollows. ^ EFFECT: simplified construction, broader functional capabilities. ^ 1 dwg
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