SU1377342A1 - Working member of apparatus for making holes in soil - Google Patents

Abstract

The invention relates to the construction industry of the United States, which allows to increase the reliability when drilling wells in solid rocks. The working body includes a rotator, the output shaft 1 of which through a transmission mechanism is kinematically connected with a rock-destroying tool (PI) 8. The transmission mechanism is designed as a planetary gear with a gear wheel (LC) 2, carrier 3 and gear wheels (Ø) 5, aPI7 and 8- in the form of truncated ball sectors located on gears x 5. Moreover, LC 2 is rigidly connected with shaft 1, carrier 3 is freely mounted on shaft 1, and Ø 5 is placed on carrier 3 with the possibility of limited rotation and kinematically connected with LC 2, Rotation shaft 5 is transmitted w 5, by turning on the axis x 4 in the direction opposite to the rotation of the shaft I. In doing so, PI 7 also rotates and describes the cylinder with the largest diameter. The rotation is transmitted to water 3 and PI 8. When the device is withdrawn from the well, the rotation of shaft I is reversed. As a result, PI 7 enters PI 8 slots. 3 Il. o (l

Description

2 З

7 L

2 ZB

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The invention relates to the construction industry and can be used as a working body of the device for the formation of wells in the soil. .

The purpose of the invention is to increase reliability when drilling wells in solid rocks.

Fig. 1 shows a kinematic diagram of the working member; FIG. 2 is view A of FIG. in FIG. 3, node I in FIG. i J.

The working body includes an output shaft 1 of a rotator (not shown), on which a rigid gear 2 and a carrier 3 are mounted. On the carrier beams 3, gears 5 mounted on axles 4, kinematically connected with wheel 2, Gears 5 on axles x 4 are installed with an annular keyway 6, which allows limited rotation on the x 4 axes. On gear x 5, peripheral rock-breaking tools 7 are rigidly mounted, made in the form of truncated spherical sectors oriented by the sphere surfaces to the borehole walls. The device is also equipped with a central rock-breaking tool 8j with a cross-shaped Central 8 and peripheral 7 rock-breaking tools installed in one flat

cross-sectional bones and have mating surfaces.

The working body works as follows.

Prior to commencement of work, the peripheral rock-destructive tools 7 are located in the grooves of the central tool 8. The working body at the same time has a minimum diameter of the cylinder described by it. When the device is inserted into the well, the shaft I of the rotator is attached to the working rotation, which is transmitted through gear 2, gear 5 and, since the latter are connected to axis 4 by means of annular key grooves 6, they turn from axis 4 to the opposite direction direction of rotation. Wherein

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five

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five

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five

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five

The peripheral tools 7 are also rotated, since they are rigidly connected to the gears 5 and occupy a position in which they describe the cylinder with the largest diameter. With a full turn in the keyway. gears 5, the rotation is transmitted to the drive 3 and the central tool 8 which is rigidly connected with it. Drilling of the well of the required diameter takes place.

If it is necessary to remove the device from a well that has a diameter smaller than the diameter of a well formed in the rough, for example, when the walls are fixed, the shaft 1 is reversed. The gears 5 with the tools 7 turn in the opposite direction. The tools 7 are inserted into the grooves of the central tool 8. At the same time, the tool has the smallest diameter of the cylinder described by it. The device is freely removed from the well.

Claims (1)

The angle of rotation of the gears 5 with the tools 7 is determined by the dimensions of the annular keyway 6. Invention formula The working unit of the device for the formation of wells in the ground, including a rotator, the output shaft of which through a transmission mechanism is kinematically connected with a rock-destruction tool, characterized in that, in order to increase reliability when drilling wells in hard rocks, the transmission mechanism is designed as a planetary gear with gear wheel, carrier and gears, while the gear wheel is rigidly connected with the output shaft of the rotator, the carrier is freely mounted on the output shaft of the rotation wheel, and the gears are placed on the carrier with zmozhnostyu limited rotation and is kinematically connected with the toothed wheel, wherein porodorazru- depleting instrzgment formed as a truncated spherical sectors, which are placed on the pinion x. BuSfA Phi1.2 (rig 3