FI78965B - JORDBORRMASKIN. - Google Patents

Description

1 78965

EARTH DRILLING EQUIPMENT

The invention relates to a device which facilitates the making of regular, if necessary deep holes in the ground. The targets are e.g. casting and erection assemblies, gravel meshes and "target composting" of decaying household waste 5.

Disposal of decaying household waste by immersion in the ground has not become widespread because the implementation of the work with the available equipment such as shovel, large and ice augers is vague and cumbersome. Therefore, composting or disposing of household waste by mixing it with other waste is common with known odors and health hazards.

Foundries and fence posts are traditionally made by shovel digging. The disadvantage of this has been deep holes, e.g. 70 ... 80 cm, in making the digging plugs 15 come out of their mouths large and vague. In addition, casting always requires molding and post-cast filling. The filled ground does not provide support for columns that deviate from their installation directions over time.

There are also equipment developed for earth drilling 20, such as in the patents: Germany 389 227 and 467 966, and in the United

Britania 1 088 830. These known solutions have a tubular part with a threaded member formed at the lower end to improve penetration into the ground. Outside there is a larger diameter tubular section. Between these there are 25 different blade solutions.

The essential disadvantages of the known solutions are a uniform central part which, when drilling, is preventing larger parts of the soil to be drilled, such as rocks, from moving upwards. The disadvantage is also the complexity of the cutting blade, the side effect of which is also in the above-mentioned direction, as well as the similarity of the cutting blades with respect to the outer tube.

The devices known to combine these factors require a lot of force when drilling, clog easily 35 and are heavy in larger diameters, as a result of which their use in the above-mentioned applications could not have become more common.

The device according to the invention has brought about a decisive improvement in these drawbacks. The device is characterized by what is stated in the claims. Thanks to their solutions, they are characterized by lightness of use, non-clogging structure and structural lightness. The device can therefore be expected to become more widespread in numerous applications in single-family homes and farms.

The accompanying drawings show the device in detail, in which Figure 1 shows the device in a vertical position, partly in section, and Figure 2 shows a sectional view of the body of the device in a top view.

The body of the device is formed by a tubular part 1 from which two drawing blades 2 are bent to a radius greater than the radius of the outer surface 15 of the body. The drawing blades cut the lawn, plant roots, etc. and guide the soil to be removed to the center of the trunk. In this case, the hole becomes larger than the diameter of the body, whereby the friction between the body 1 and the external ground 9 is practically eliminated. Two cutting blades 3 are connected radially 20 to the frame, which cut the ground and at the same time lift the cut soil 10 up to the center of the frame part 1.

The penetration into the ground is improved by a helical part 4 connected to the blade center. The force required to rotate the device is transmitted to the body from the top by means of an arcuate flat steel 5. The solution leaves the inner part of the body 1 open and thus facilitates the transfer of the drilled soil 10 from the blades 3 to the center of the body. The force is transmitted to the part 5 via a vertical pipe 6, to which a wrench pipe 7 is connected. When drilling, the drill is raised to about 30 after about 10 cm and emptied to the desired location. Drilling is thus continued to the desired depth. An adjustable drilling depth indicator 8 is connected to the drill vertical pipe 6.

The drill shown in the figure is manual. The device is applicable to machine operation.

35 The device is light, drilling a 160 mm hole, max drilling depth 900 mm, the device weighs only about 2.8 kg.

Claims (3)

3,78965 An apparatus for drilling regular, if necessary deep holes in the ground for burial of waste, for making casting and gravel meshes and the like, in which the rotational movement obtained by means of 5 hand levers (7) is transmitted by means of a vertical pipe (6) and an arcuate flat steel (5) to a tubular frame. to the part (1) from which the drawing blades (2) with a larger radius parallel intersect and guide the soil (10) for cutting the cutting blades (3) radially fixed to the frame and moving them to the open frame part, characterized in that the drawing blades (2) are bent from the body part (1) to a larger radius. Device according to claim 1, characterized in that the helical central part (4) is connected directly to the cutting blades (3) fixed radially to the body (1), leaving the central part of the body open. Device according to Claim 1 or 2, characterized in that the vertical tube (6) of the device is provided with an adjustable drilling depth indicator (8).