SU44384A1 - Device for sampling loose rocks from the bottom of reservoirs - Google Patents

Description

Instruments for sampling soil, etc., are already known, consisting of a cylinder fitted at the lower end of the cutting; A crown in which the sampling cylinder is made of the HblTj connector.

Significant disadvantages of such devices include the fact that when the device is removed from the ground and pulled out of the water, the ground is washed out, as the cylinder from the bottom is open.

The present proposal eliminates this drawback by the fact that the lower part of the instrument, which takes the sample, is pulled out of the water in an inverted state, for which special wings are made on this part, keeping the cylinder in a fixed position while the rod is unscrewed from it. and the cutting crown is provided with a grip, behind which a cable is fastened, designed to pull the cylinder out of the ground, turn it upside down and pull it out.

In FIG. 1 shows a sectional view of the device along the axis; FIG. 2 is a general view of the device and FIG. 3-7 - details. . The device consists of a steel cylinder 2, one end of which is connected with a cutting crown / by means of screw cutting, and the other end is connected with a tip 3 by means of cutting

(95)

for the bar / 7. Cylinder 2 is not cut lengthwise into two halves over the entire length of the cylinder, and one of the halves 10 (shown separately in FIG. 3) is cut across, forming a removable part of the cylinder. When assembled, the uncut part of the cylinder is connected to the removable part by means of a collar 4 (shown with a dotted line in Fig. 1), forming two wings 5 along the seam, consisting of two halves and fastened on one side with rivets 6, and on the other side with bolts 7 .

An eyelet 8 is attached to the crown / tightly, which serves to strengthen the steel cable 75 (Fig. 2). LAMP 5 is placed in the recess 9 of the crown in such a way that the gorge and the cable attached to it do not protrude above the outer surface of the crown. There are several holes / 2 for screws or bolts in the latter for connecting the rod 11 with the tip 3. A bolt 75 serves to strengthen the collar 4 in a fixed position relative to the cylinder 2, and holes 14 (a total of four pieces) are provided for water to escape into the cylinder 2 between the collar and the end of the rod.

The internal diameter of cylinder 2 is slightly larger than the internal diameter of the crown (approximately 2 mm. A thin-walled metal sleeve 76 (approximately 10 cm long, fig. 5-6) is placed into this cylinder and there are two

metal rings / 7 of the same diameter and so that the inner diameter of the sleeve and the rings were slightly larger than the inner diameter of the crown (about 1 mm).

Cut 78 to connect the cylinder to the tip of the rod directly (clockwise), and cut / P to connect the crown with the cylinder reverse (counterclockwise). The cut part of the cylinder is separated from the uncut metal grid 20 (Fig. 4) or a circle with holes. In order to facilitate the removal of soil samples from the cylinder, there is a notch in the collar 2 /. To unscrew the crown from the cylinder, the key 24 (Fig. 7) is used, the protrusion of which is placed in the cavity 22 of the crown. A screw 23 serves to fasten the collar and the removable part of the cylinder. In the case of soft rocks, this screw will not need to be tightened.

The operation of the instrument is as follows. The assembled device is lowered with the help of the rod to the required depth into the ground in such a way that part of the cylinder goes to the ground to the mesh 20. After that, turning the rod counterclockwise unscrew the rod from the cylinder, and to prevent the cylinder from turning unscrewing the crown is the reverse cut / R. After the bar is unscrewed, the device is removed with a cable / 5. The oblique position of the cylinder with respect to the direction of application of force (cable) contributes to tearing off the soil column, and tilting the cylinder when pulling the device out of the ground or through the water column will not allow the soil sample to fall out and wash out. After removing the instrument, the crown is unscrewed, the detachable half of the cylinder is removed and the sleeve is removed with a soil sample, and the soil sample is crushed in the end rings, and in the sleeve with an undisturbed structure in the end rings. If it is not necessary to determine the volumetric weight of the soil, then the work can be performed without a sleeve and without rings.

The subject matter of the invention.

A device for sampling loose rocks from the bottom of reservoirs using. a split cylinder provided with a rod and a cutting crown, characterized in that in order to unscrew the rod 3. / 7 from the cylinder 2 immersed in the ground, the latter is equipped with wings 5 serving to hold the cylinder in a stationary position.

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