GROUND TEST AND OF NON-DISTURBED STRUCTURES SAMPLING DEVICE IN THE WELL WITH THE REACTIVE POWER AUTOMATIC COMPENSATION Russian patent published in 2018 - IPC E02D1/04 

FIELD: building; instrument making.

SUBSTANCE: invention relates to the field of engineering surveys, namely to the foundation soil surveys on the construction site and the undisturbed structures specimens sampling that are produced in difficult, hard-to-reach, constrained conditions. device consists of a body in the form of a pipe, divided into two parts by the sealed partition, in the body lower part the screw plug with internal left-handed thread is arranged, into which a screw with the left-handed thread is screwed in, and in the body upper part the plug is screwed in, having an n-edges opening serving to pass the n-edges shaped drive shaft, which is configured to move longitudinally within the body upper part and in the lower part having the threaded portion with a washer, nut and cotter pin to prevent spontaneous dropping out, at the top, the drive shaft has a cylindrical part ending with the thread for installation and fixing of the anchoring device, consisting of a body mounted onto the drive shaft cylindrical part, eyelets for the anchor blades fixation, compression spring located on the drive shaft between having the n-edge opening plug and the anchoring device body.

EFFECT: technical result is reduction in weight and the possibility of manual using in the production of engineering geological and geotechnical surveys in hard-to-reach areas and cramped conditions.

5 cl, 2 dwg