SU1404628A1 - Scoop drill - Google Patents

Abstract

The invention relates to drilling equipment and m. used for drilling and broadening wells. The goal is to simplify the design. The drill consists of a body (K) 1 with a driving rod 2, shutters 3, knives 6 and expansion knives 7. Through side walls K 1 there are through windows 4. Sash 3 are flush with K 1 and hingedly mounted on a side with a possibility of blocking windows 4. The knives 6 are attached to the bottom of K 1, and the knives 7 are attached to the outer edges of the flaps 3. With the flaps 3 closed, the knives 6 destroy the rock entering K 1, which is raised to the surface during filling to unload. A drill is lowered into the well to broaden the well. Under the action of the centrifugal force, the flaps 3 open, the knives 7 remove the chips from the borehole walls, and the broken rock enters through the windows 4 into K 1. 2 Il.

Description

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The invention relates to a drilling technique and can be used for drilling and widening wells.

The purpose of the invention is to simplify the design.

FIG. 1 shows a bucket drill, general view; in fig. 2 - the same, top view.

Bucket drill consists of a cylindrical body 1, a drive rod 2 attached to the body, shutters 3 hingedly attached to the body and overlapping through windows 4, made in the body, and a folding bottom 5 with knives 6 attached to it.

The flaps 3 are flush with the housing 1 and can be opened outwards. Spacing knives 7 are attached to the outer edges of the flaps 3. The edges of the expansion knives 7 have pointed teeth 8 located along the outer envelope of the housing.

From the side of the hinges (not indicated), the flaps 3 have supporting ribs 9. The bottom has a locking mechanism (not shown). The flaps 3 have spring-loaded latches 10 located in the housing.

Carbug works as follows.

The drill is lowered onto the ground and rotated, for example, to the left. The knives 6 destroy the rock that enters the inside of the housing 1. The flaps 3 are thus locked from opening by means of clamps 10.

The housing 1 filled with rock is raised to the surface, retracted to the side,

the locking mechanism is sealed, the bottom is tilted and the rock is poured out. After several such operations, the well was drilled to the design mark. In order to form a hole in the well, the shutters 3 are released from the locking by the locks and the bucket drill is lowered into the well. Borax is reported to rotate right without axial feed. Under the action of centrifugal force, the flaps 3 begin to open, and the expansion knives 7 remove annular chips from the walls of the well. Pointed teeth 8 enter the rock and contribute to further opening of the valves. Destructible rock enters through the windows 4 into the housing 1. The sash, upon the formation of broadening, rests on the housing with supporting ribs 9.

After the formation of the broadening or when the rock is filled with rock, the carpal drill is lifted to the surface for unloading.

Claims (1)

Invention Formula A bucket drill, comprising a housing with drive shaft, knives attached to the bottom of the hull, and wiper blades, characterized in that, in order to simplify the design, through windows are provided in the side walls of the hull, while the bucket drill is provided with flaps that are flush with the hull and hinged to it with the ability to overlap through windows, with the expansion knives attached to the outer edges of the valves. J S, n ,, hrrH  1 I I x / I f II Lllj