23-05-2023 дата публикации
Номер: CN116146104A
Принадлежит:
The invention relates to the technical field of soil drilling equipment, in particular to a rock-soil layer drilling device for hydrogeological survey, which comprises a bottom plate, a support is fixedly mounted on the front side of the top of the bottom plate, and movable frames are movably connected to two sides of the support in a sleeving manner. By arranging a movable head, a driving motor, a movable disc, a connecting rope and a through opening, the movable head does not move upwards due to the fact that a middle cavity is filled with high-pressure gas, and at the moment, along with rotation of a sampling drill bit body, the movable head and a bottom block, the sampling drill bit can go deep into deep soil from rock soil on the surface; then an operator can start operation of a driving motor, a rotating shaft can drive a lead screw to rotate, at the moment, a movable disc can move downwards in an outer cavity under the limiting effect of a vertical rod, and at the moment, high-pressure ...
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