RU216446U1 - Drill with manual drive - Google Patents

Abstract

The utility model relates to rotary drilling of small-diameter wells, mostly shallow ones, without core storage. The drill with a manual drive contains a handle, a shaft and a hollow cylinder fixed to each other. Two vertical incomplete technological cuts are made on diametrically opposite sides of the hollow cylinder. Vertical incomplete technological cuts form semi-cylinders with vertical and end edges. Knives are fixed on the vertical edges at an angle. The knives are turned with their pointed side to the free space of technological cuts. Oblique cuts are made on the end edges. Oblique cuts form incisors. EFFECT: increase in the cutting area of the drill. 3 w.p. f-ly, 3 ill.

Description

The utility model relates to rotary drilling of small-diameter wells, mostly shallow ones, without core preservation, when the use of mobile mechanized drilling rigs (rigs) is impossible due to terrain conditions or is not economically feasible.

In the prior art, a hand-operated soil drill (author's certificate SU 874905, published 10/28/1981) is known, containing a housing and a rod with a crank, while the housing is connected to the rod by means of a ribbed impeller. The body has the shape of a hollow truncated cone, and the cutters are scoop-shaped with a rounded cutting edge protruding on both sides of the lower edge of the body. The invention is aimed at increasing the separation of the core, while the cut is carried out only by the lower part of the drill, therefore, the cutting area of the drill is limited.

A device for manual drilling of wells is known (patent RU 2236536 C2, published on September 20, 2004 Bull. No. 26), including a crown with two cutting edges, a cylindrical body with a threaded shank for installing a drill rod, a tubular liner for receiving crushed soil, while the crown has an inner smooth surface in the form of a truncated cone with a calibrating hole to form a soil column, the diameter of which is 2÷3 mm less than the inner diameter of the tubular liner, while the tubular liner is made of a thin-walled polyethylene tube and installed inside the housing with a gap along the diameter. The technical solution is aimed at facilitating the process of manual drilling of hydroobservation wells of small diameter in combination with providing convenience and ease of maintenance of the drilling tool, and as a result, increasing labor productivity. The device is equipped with two cutting edges of the crown, which have a smooth inner surface in the form of a truncated cone, i.e. the cut is carried out only by the lower part of the drill, therefore, the cutting area of the drill is limited.

A sampler is known (patent RU 2399723 C1, published on September 20, 2010 Bull. No. 26), containing a cup holder with a removable sampling sleeve, configured to be fixed at the end of a rod equipped with a handle. The sampling sleeve is made of thin elastic spring steel and is cut along the generatrix, while the end of the sampling sleeve is provided with an L-shaped slot, at least one, and the inner surface of the cup holder is provided with a protrusion configured to interact with said slot. The technical solution is aimed at ensuring the preservation of the original structure and initial properties of the soil sample when it is excavated from the soil carrier, while the sampler does not have cutting surfaces (edges) both along the height (length) of the cylinder and at its end.

The technical problem lies in the fact that for drilling wells of small diameter, for example, for installing remote electrodes for measuring the parameters of electrochemical protection or for geological exploration purposes, as a rule, hand-operated drills are used, but for known drills, the cutters are located only at the end of the cylinder (body), accordingly, the cutting area of the drill and the cutting ability are limited. The use of such manual drills requires significant physical effort of the worker, and the drilling process itself has a low productivity.

The technical result is to increase the cutting area of the drill.

The technical result is provided by a hand-operated drill, which contains a handle, a shaft and a hollow cylinder fixed to each other, on the diametrically opposite sides of which two vertical incomplete technological cuts are made, forming half-cylinders with vertical and end edges, while knives are fixed on the vertical edges at an angle, facing with their pointed side to the free space of technological cuts, and oblique cuts are made on the end edges, forming incisors.

The handle, shaft and hollow cylinder can be rigidly or detachably connected to each other.

In addition, the knives on the vertical edges of the semi-cylinders formed by the technological cuts of the hollow cylinder are rigidly fixed by welding or with countersunk screws.

In addition, the shaft can additionally be provided with a second shaft and connected to each other by a coupling or a threaded connection.

The proposed manual drill is illustrated by the drawings:

Fig. 1 - front view.

Fig. 2 - side view.

Fig. 3 is a bottom view of FIG. 1.

A hand-operated drill (Fig. 1-3) contains a shaft 1 fixed to each other, a handle 2, a hollow cylinder 3, on diametrically opposite sides of which two vertical incomplete technological cuts 4 (Fig. 2) are made, forming semi-cylinders 5 with vertical 6 ( Fig. 2) edges and end (not marked in Fig. 1-3) edges, while on the vertical 6 edges at an angle fixed knives 7 (Fig. 3), facing their pointed side to the free space of technological cuts 4 (Fig. 2 ), and on the end (not indicated) edges, oblique cuts are made, forming incisors 8 (Fig. 1-3). Knives 7, fixed on the vertical 6 edges of the semi-cylinders 5 and turned with their pointed side to the free space of technological cuts 4, increase the cutting area of the drill. The width and height of technological cuts 4 must be such as to ensure the penetration (entry) of soil into the hollow cylinder 3 during drilling, and are selected depending on the height (length) and diameter of the hollow cylinder 3. The handle 2 is fixed at one end of the shaft 1 rigidly, for example, by welding (not shown in Fig. 1-3) or removable, for example, by means of a coupling 9 (Fig. 1, 2) or a threaded connection (not shown in Fig. 1-3), which will make the inventive drill prefabricated - collapsible for ease of transportation. The second end of the shaft 1 is rigidly fixed to the hollow cylinder 3, for example, by welding or removable, for example, by a threaded connection, while the upper part of the hollow cylinder 3 can be solid (not shown in Fig. 1-3) or in the form of a crossbar 10 (Fig. 1-3), which will make the claimed drill collapsible for ease of transportation. The knives 7 on the vertical 6 edges are fixed rigidly, for example, by welding or with countersunk screws (not shown in Figs. 1-3) that do not protrude on the working surface of the knives 7 to ensure a smooth cutting surface. The shaft 1 can additionally be equipped with a second shaft 1 (Fig. 2), which is connected to the first shaft 1 by means of a coupling 9 (Fig. 2) or a threaded connection (not shown in Fig. 1-3), which will increase the length of the drill and , respectively, the depth of drilling of the well. Shaft 1, handle 2, hollow cylinder 3, knife 7 are made of steel of high strength and hardness, for example, for shaft 1 and handle 2, steel grade 30KhGSA is used, for cylinder 3 - steel grade (St4sp), for knives 7 - 65, 80 , 65G, 50HFA, 60S2A.

A manual drill is used as follows.

A hand-operated drill is assembled, which contains a shaft 1, a handle 2 and a hollow cylinder 3, and is installed vertically at the well drilling site (not shown in Figs. 1-3). By rotating the handle 2 (Fig. 1, 2), fixed at one end of the shaft 1 using a coupling 9 or a threaded connection, the shaft 1 is set in motion, which, in turn, rotates the hollow cylinder 3. Cutters 8 (Fig. 1- 3) the soil is cut, and the hollow cylinder 3 with its semi-cylinders 5 (Fig. 2) deepens into the soil, while the knives 7 fixed on the vertical 6 edges (Fig. 3), facing with their pointed side to the free space of technological cuts 4, cut the soil around hollow cylinder 3, which leads to an increase in the cutting area of the drill and, as a result, the cutting ability of the drill, facilitating the process of manual drilling, incl. reducing the physical effort of the worker and increasing the productivity of his labor. The soil fills the cavity of the hollow cylinder 3 in a natural way from the end and through the free space of technological cuts 4, where it is compacted under the action of the force of rotation of the drill. After filling the entire cavity of the hollow cylinder 3 with soil, the drill is removed, the soil is removed from it and again introduced into the resulting well (not shown in Fig. 1-3), repeating the drilling cycle until the desired well depth is obtained. If necessary, when it is required to drill a well with a depth greater than the length of the drill itself, the shaft 1 is connected by means of a coupling 9 (Fig. 2) or a threaded connection (not shown in Fig. 1-3) with the second shaft 1 to increase the length of the drill and continue drilling .

That. The proposed design of the drill with a manual drive provides an increase in the cutting area.

Implementation example.

On the main pipeline of the Kamchatka Linear Production Administration, when performing technological maintenance of electrochemical protection installations, drilling a well for installing a copper sulfate reference electrode was used by the proposed drill with a manual drive. Shaft 1 110 cm long, 20 mm in diameter and 3.5 mm thick was connected by a threaded one end to a handle 2 50 cm long, 20 mm in diameter and 3.5 mm thick, and the other end was connected to the crossbar 10 of a hollow cylinder 3 height ( length) 40 cm, diameter 159 mm and thickness 5 mm. At the hollow cylinder 3, on diametrically opposite sides, two vertical incomplete technological cuts 4 are made, forming two half-cylinders 5 with vertical edges 6 and end (not shown in Fig. 1-3) edges. On the vertical 6 edges, knives 7 are fixed at an angle, their pointed side facing the free space (slots) of technological cuts 4, and oblique cuts are made on the end edges, forming cutters 8. The drill was installed at the drilling site and, by rotating the handle 2, brought to movement of the shaft 1, which, in turn, rotates the hollow cylinder 3. The cutters 8 on the end edges of the hollow cylinder 3 cut the soil, while the hollow cylinder 3 with its half-cylinders 5 deepens into the ground, and the knives 7 fixed on the vertical edges 6, facing their pointed side to the free space of technological cuts 4, cut the soil around the hollow cylinder 3, which increases the cutting area and facilitates the process of manual drilling, respectively, the worker makes less physical effort and increases his productivity. The soil fills the cavity of the hollow cylinder 3 in a natural way from the end and through the free space (slots) of technological cuts 4, where it is compacted under the action of the force of rotation of the drill. After the entire cavity of the hollow cylinder 3 was filled with soil, the drill was removed, the soil was removed from it. Then, the drill was re-introduced into the resulting well, the drilling cycle was repeated, and a well with a depth of 80 cm was obtained, which is necessary for installing a copper sulfate reference electrode.

It is obvious that the proposed manual drill can be used when drilling wells for other production and technological tasks, for example, for exploration purposes, and the geometric dimensions of the manual drill can vary in accordance with the tasks.

Claims (4)

1. A drill with a manual drive, containing a handle fixed to each other, a shaft and a hollow cylinder, on diametrically opposite sides of which two vertical incomplete technological cuts are made, forming half-cylinders with vertical and end edges, while knives are fixed at an angle on the vertical edges, facing their the pointed side to the free space of technological cuts, and oblique cuts are made on the end edges, forming cutters. 2. A drill with a manual drive according to claim 1, characterized in that the handle, shaft and hollow cylinder are rigidly or detachably connected to each other. 3. A drill with a manual drive according to claim 1, characterized in that the knives on the vertical edges of the half-cylinders formed by the technological cuts of the hollow cylinder are rigidly fixed by welding or with countersunk screws. 4. A drill with a manual drive according to claim 1, characterized in that the shaft is equipped with an additional shaft, while the shafts are interconnected by a coupling or threaded connection.

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