| 摘要 |
FIELD: mining.SUBSTANCE: invention relates to well drilling rig with recovery of core, particularly, to core lifters and retainer used in disassembly of sampler. Proposed device comprises top squeezing ring with handles and bottom part. Note here that top squeezing ring consists of articulated links. Said squeezing ring is secured to core lifter by top coupling screw and nut. Device bottom part is composed by bottom coupling screw and bottom squeezing ring nut. Said bottom squeezing ring consists of articulated links with shaped inner surface. Link side surface has bores to accommodate core breaker screws. Bottom squeezing ring is jointed with top ring. In disassembly of multisection lifter and disconnection of core lifter, the core is separated by tightening of core breaker screws. After core separation, said screws are tightened to the stop retain the core in top pipe. Then, bottom tightening nut is tightened to lock the core at bottom squeezing ring link shaped inner surface.EFFECT: simplified disassembly.8 cl, 3 dwg |
