SU1232773A1 - Apparatus for drilling wells - Google Patents

Description

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The invention relates to the construction, in particular to a tool for drilling wells in soils.

The purpose of the invention is to increase efficiency at work.

FIG. 1 and 2 shows the device, a general view; in fig. 3 shows section A-A in FIG. 2

The device contains a shaft 1, a screw blade 2 with cutting knives 3, a disk 4, an additional disk 5 with a segment notch 6, rollers 7, an endless belt 8, a sleeve 9. The rollers 7 are fixed to the disks 4 and 5 with the possibility of their rotation, and the sleeve 9 Freely mounted on the shaft 1. Disks 4 and 5 are mounted on the drive shaft 1 at the rear of each other.

The device works as follows.

The shaft 1 is attached to the rotation, while the cutting edges 3 cut into the soil of the well, and the soil along the helical,

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blades 2 through a segment notch 6 enters the space between disks 4 and 5.

The soil of the borehole wall, interacting with the section of the tape 8 located on the extreme roller 7, causes the rotation of the tape, which runs freely along the rollers 7 and the sleeve 9, ensuring the transportation of soil in the direction of the borehole wall followed by its introduction and compaction into the wall.

The use of an additional disk with a segmental cut parallel to the limiting disk in the proposed device, as well as the presence of rollers with an endless belt moving in the direction of the ground movement with simultaneous insertion and compaction into the borehole walls, increases productivity and reduces energy costs when a well is formed.

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Editor A, Shishkin

Compiled by L. Cherepenkin

Tehred M. Hodannch Proofreader A. Ferenc

Order 2746/32 Circulation 548 Subscription

with VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

Fig.Z

Claims (2)

1. DEVICE FOR DRILLING WELLS, including a shaft with a helical blade, a main disk located on a helical blade, and a curved blade located under the disk, characterized in that, in order to increase efficiency in operation, it is equipped with an additional disk with a segment cut in the exit area of the screw blades, and the curved blade is made in the form of rollers with axes located between the main and additional disks, and an endless tape covering the rollers and the shaft, while the axes of the rollers are fixed in the disks with the possibility of rotation Eden. 2. The device pop. 1, characterized in that the infinite ® tape is installed with the possibility of interaction with the shaft by means of coax. but mounted on it bushings. I