SOIL AUGER-SAMPLER Russian patent published in 2009 - IPC E02D1/04 G01N1/04 

FIELD: mining.

SUBSTANCE: present invention pertains to devices for taking soil samples with an intact structure. Auger-sampler has a hollow case, on the outer side of which an auger-type spiral is attached. Inside the case there is a detachable cylinder for receiving the soil sample on the centre plane. Inside the case there is a cup. At the top end of the case, a cover is rigidly fixed, with a hollow hub. At the top end of the cup there is an axle. The cup is fitted in the case on two friction bearings, the lower friction bearing of which is ring-shaped, fitted in an annular space and rigidly joined to the case. The upper friction bearing is in form of a bushing in which the above mentioned axle is fitted, and is fitted in a hub and fixed relative the latter. The device has cutter, joined to the case with provision for disconnection from the latter, made in form of connecting pipe with a toothed end, with inner diameter equal to the cylinder for receiving samples, fitted under the flange of the cylinder for receiving samples and with clearance from the latter, opposite which, in the horizontal plane, there are two curved knives, which are fixed on shafts, parallel the axis of the device and passing through openings in the ring and cover. The hub is freely fitted with a disc, on which there are two arc-shaped grooves with centre of curvature on the axis of the disc, through which shafts pass, which is spring loaded relative the cover in the angular direction, at the top ends of which there are locking devices which rest on supports fixed on the disc. The curved knives are separated from the axis of the device, while the disc is spring loaded relative the cover, in the direction of the operating rotation of the device.

EFFECT: provision for preservation of the natural structure of the soil sample and reduction of energy spent on taking it.

5 dwg