| 摘要 |
FIELD: oil and gas industry. ^ SUBSTANCE: invention refers to construction industry, and namely to reaming devices of the wells drilled in the soil, and can be used for reaming blind wells at erection of bored piles. Device for reaming blind wells involves the operating tip made of sector plates hinged on the end of cylindrical housing, which is front as to direction of well reaming. Inside that housing there rigidly fixed is vibrator of circular vibrations and spreading mechanism of sector plates, which is made in the form of the ring installed on outer side of cylindrical housing with possibility of being moved throughout its length, which is connected by means of stiff rods to drive of back-and-forth movement. ^ EFFECT: reaming of blind wells in soil for drilled piles. ^ 2 cl, 5 dwg |
