CZ302844B6 - Device for successive withdrawal of soil material from soil profile - Google Patents

Abstract

In the present invention, there is disclosed a device for successive withdrawal of soil material from soil profile comprising a portable frame (21) provided with a guide bushing (22) for passage a drilling cylindrical body (1) therethrough. The boring cylindrical body (1) is coupled with a boring rod (13) with a controller (12) of boring hole closure fitting on pins (8) wherein the boring rod (13) passes through a rotary adjusting device (14) with a stop adapter (18) inserted thereon. The stop adapter (18) is connected by means of thread with a fixing bushing (16) that fits through its centering pins (17) into a fixing sleeve (19). The boring cylindrical body (1) is provided with two semielliptical cutting blades (2), packer edge (4) and control shaft (6) with the boring hole closure (5).

Description

Technical field

BACKGROUND OF THE INVENTION The invention relates to a device for the gradual removal of soil mass from a soil profile to a minimum depth of 50 cm, in particular for determining the bulk density and moisture content of a soil sample taken, which consists of a drill body with a handle.

BACKGROUND OF THE INVENTION

Based on a literature review of the world's scientific and professional publications, despite all efforts to detect changes in soil physical parameters due to undesirable soil compaction by new and more accurate procedures, a direct method of taking intact soil samples using so-called Kopecký rollers is currently being used. A significant disadvantage of this method is that it does not take into account the friction of soil particles against the metal walls, which causes it to sink into the soil, and thus the values of the observed physical soil quantities can be undesirable. Furthermore, there is no possibility of gradual sampling at specific depths. Before the actual collection is necessary to adjust the hole for insertion of soil removal roller. Sampling of intact soil samples is very sensitive to errors caused during sampling and extraction of the sample, where the measured values can be greatly dispersed.

SUMMARY OF THE INVENTION

These drawbacks are largely eliminated by a device for gradual removal of soil mass from the soil profile, consisting of a drilling cylinder collection set and a frame provided with a fixation sleeve for the drilling cylinder passage connected to a retractable handle drill rod on which a drilling closure actuator engaging This invention is characterized in that the rotary countersink is threadedly connected to a fixation sleeve that fits into its fixation sleeve with its centering pins. The cylindrical drill body is equipped with two half-elliptical cutting knives, a cutting edge and a control shaft with a drill hole closure. The cutting edge is removably attached to the cylindrical body. The drill hole cap mounted on the control shaft is inserted into the bottom of the drill cylinder.

The half-elliptical shape of the cutter blades ensures an even distribution of the cutting force when the soil mass is taken over the entire cutter blade in the direction of rotation.

The shape, size and method of storing the drill hole cap in the bottom of the drill cylindrical body guarantees maximum utilization of drill chambers and minimum losses during extraction of soil sample from the soil profile.

The rotary counterbore with thread enables precise adjustment of the height of the drilled soil layer, constant pressure on the half-elliptical cutter blades during soil removal and guarantees a continuous counterboring of the drill cylinder into the soil profile. Portable frame consisting of three arms with spikes ensures stability of the collection set on the soil surface during handling.

The device according to the invention allows precise removal of the soil mass at any depth of the soil profile.

- 1 GB 302844 B6

Overview of the drawings

BRIEF DESCRIPTION OF THE DRAWINGS The invention will be explained in more detail with reference to the drawings, in which: Fig. 1 shows a complete assembly of a device for sequentially removing soil mass from a soil profile; Fig. 2 shows a portable frame with fixation sleeve and guide sleeve; Fig. 4 shows an exploded drill bar, Fig. 5 shows a drill bar with an output handle, Fig. 6 shows a drill hole closure actuator, and Fig. 7 shows a drill barrel extension. Figure 8 shows an overall exploded assembly of a drilling device for sequential removal of soil mass from the soil profile.

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DETAILED DESCRIPTION OF THE INVENTION

The main part of the soil removal device from the soil profile consists of a cylindrical drill body 1 having a centering cone 3 located in the center of the bottom of the drill cylindrical body L from which two opposite half-elliptical cutter blades 2 with blades emerge. Each half-elliptical cutter 2 has a gripping blade 4 at the outer edge of the drill body 1. A control shaft 6 with a drill hole closure 5 having an exact drill hole shape covering the bottom of the drill cylinder 1 symmetrically is inserted into the drill bar. The control shaft 6 accommodates the pin 7 mounting. Under the 2 pin mounting 8, a compression spring 9 is pushed onto the shaft 6 to ensure a constant downforce 5 of the drill holes on the bottom of the cylindrical body 1 against which the drill bit holder 10 is mounted. 1, securing the boring barrel 1 to a drill rod 13 with a retractable handle 20. The rotary counterbore 14 with external thread and adjusting element 15 is screwed into the internally threaded fixation sleeve 16 with the stop nut 18 pushed in. The rotary counterbore 14 with the stopper 18 slid in and the fixation sleeve 16 are slid onto the drill rod 13 with the retractable handle 20. The borehole shutter actuator 12, rotatably mounted, is inserted into the fixation sleeve 19 mounted in the portable frame 21 with the guide sleeve 22. on the drill rod 13 with the retractable handle 20, it engages the pins 8 in the grip 7 and rotates the actuating shaft 6 with the drill hole closure 5.

The device operates by inserting the drill rod 13 with the retractable handle 20 and the assembled rotary countersink assembly 14 with the stopper 18 slid and screwed into the fixation sleeve 16, which engages with the centering pins 17 into the fixation sleeve after folding the portable frame 21 into working position. 19 and at the bottom of the portable frame 21, the boring barrel 1 is inserted into the guide sleeve 22. The depth of the borehole is adjusted by a rotary countersinking tool 14 screwed into the fixing sleeve 16 and the borehole shutter actuator 12 is set to the open position.

A drill rod 11 with a retractable handle 20 and a cylindrical drill body 1 is lowered onto the ground, and after its abutment, a rotary counterbore 14 is fastened to the drill rod 13 pre-screwed into the fixation sleeve 16 via the adjusting element. 19. By rotating the drill rod 13 with the retractable handle 20, the drill cylindrical body 1 is countersinked in a clockwise direction to a predetermined borehole depth.

After the rotary countersink 14 has come to rest on the stopper 18 and the fixation sleeve 7, the drilling is terminated and the drill hole closure actuator 12 is set to the closed position. The whole device is removed from the fixation sleeve 19, by means of the drill hole closure actuator 12 is rotated by the drill hole closure 5, the drill holes of the drill cylindrical body 1 are opened and the collected soil sample is poured into the respective container. The same well can be continued for further soil sampling up to the required depth.

For proper operation, it is advantageous for the bottom of the drill cylinder 1 to be formed by two opposing cutters 2 with blades of a half-elliptical shape, the surface of which, viewed from the side, has an arcuate shape with a continuously decreasing radius adjoining the bottom

1, in which the drill hole closures 5, having the shape of the drill chambers actuated by the drill hole shutter 5, are countersunk. Each half-elliptical cutter 2 has a grooving blade 4 attached to the outer edge of the cylindrical body 1.

The device according to the invention can be used, in particular, in the sampling of soil for determining the density and soil moisture of any soil type.

Claims (3)

PATENT CLAIMS An apparatus for sequentially removing soil mass from a soil profile comprising a portable canopy provided with a guide sleeve for the passage of a boring barrel coupled to a drill rod, on which a plunger lock actuator engages a pivot, the drill rod extending through a rotary countersink, characterized in that the rotary counterbore (14) fixed to the drill rod (13) with the adjusting element (15) is threadedly connected to the fixation sleeve (16) which fits with its centering pins (17) into the fixation sleeve (19), 2o the drill cylindrical body (1) is provided with two half-elliptical cutters (2), a stub blade (4) and a control shaft (6) with a drill hole cap (5). Device according to claim 1, characterized in that the gripping blade (4) is removably connected to the drill cylinder (1), Device according to claim 1, characterized in that the drill hole closure (5) mounted on the control shaft (6) is recessed in the bottom of the drill cylinder body (1).