SU20372A1 - Soil drill - Google Patents

Description

The invention is intended to mechanize work on obtaining soil monolithic samples of large sizes for the purposes of soil science, etc., while eliminating the need to dig out a special soil monolith directly with a shovel. In these species, a soil drill is proposed from two pipes which enter one another, with the inner pipe serving as an axis for the outer one and accepting a soil monolith cut by an outer pipe having independent and independent movement. In addition to rationalizing the process of the work itself, the author sees an advantage in applying the soil drill offered by him in a significant decrease in the damage to the land area and in the possibility of the monolith returning to the original place after the research.

In FIG. 1 shows the installation of a soil drill on a tower (side view); FIG. 2 - the same, partial view from the other side; FIG. 3 and 4 - inner casing; FIG. 5 and 5 - outer pipe drill.

The proposed drill consists of two cylindrical tubes. The inner casing pipe 6, with the cutting edge b at the bottom (Fig. 3), has only a translational movement up and down (without rotation), being the axis for moving the enclosing

its outer tube 14 is somewhat larger in diameter (with a gap). The latter tube is provided in its lower third with outer spiral plowshares 16, which, in terms of their shape, size and material, are selected in accordance with the physical properties of the soil and the nature of the study. The diameter of the cutting edge of the pipe 14 is somewhat less than its internal diameter; This is done in order to facilitate the entry of the soil monolith into the pipe and the mouth {to press it together. Having sunk into the ground, the plowshares of the pipe 14 gradually cut out an annular layer of earth — somewhat wider than the width of the screw blade itself; The inner casing b slides into this annular space and moves completely independently of the pipe 14. The work is performed by successively deepening the pipe 14 and pulling the casing 6, removing the first pipe to the ground surface as needed to clean its working part, but the pipe .6 it is imperative to leave at this time: in the same position to maintain the already cased soil monolith in full immunity. In order to facilitate the cutting of the soil and the excavation of the annular layer of the shares, the pipes 14 receive in their lower part a dump

by the type of plows Sacca. To facilitate the separation of the monolith at its base, with viscous soil, additional blades-knives are used on the rods 17 (Fig. 5), which are passed through the gap between the two pipes; turning these rods by their respective hand tools in their upper part results in cutting the soil monolith from below. After the casing b is removed, the sample is removed through a detachable segment 7, which is secured at the bottom with its fingers 7 and locked at the top with a special lock (Figures 3 and 4).

For work as a soil drill, it serves as a drill tower 1, which can be installed, if desired, on a wheel drive 2, 3 (in Fig. 1, lifting mechanisms are shown in the wheel moves for easy installation of the tower in place). The legs of the tower 1 are fastened at the top with a cushion 5, which serves as a support for the double rod 8 of the casing 6; by means of a guide washer 10 and two screw nuts 12 with keys, a double bar works like a jack, a cut-in

casing tube b into the soil or extract it out. On the cushion 5, a winch attachment 13 for lifting the outer tube 14 is also strengthened. The penetration of the last tube into the ground is carried out using a rotary key 15 with a ratchet fixture; adhesion is achieved by means of pins located on the inner side of the key ring 15 and holes 18 on the surface of the pipe.

The subject of the patent.

A soil auger for taking monoliths to a considerable depth, with two pipes entering one another, characterized in that, when both pipes move independently of each other, the inner casing b is smooth and detachable to push the carved monolith and the outer tube 14, provided with screw surfaces, is intended for cutting a soil sample.

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