SU1430493A1 - Rotary bit drill - Google Patents

Abstract

The invention relates to mining. The purpose of the invention is to improve the quality of exploration due to a more complete core removal. On the casing (K) 1 with a core-receiving channel 9, the well-forming cones 2 are installed and with the possibility of rotation relative to the longitudinal axis K 1 - calibrating cones 3. On the inner surface of the cones 3 are made.

Description

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four

oo o so

with

ring groove (P) 7 with a protrusion 8, P 7 includes one end of a core-Loma, made in the form of a pin (W) 5 and placed in a radial hole 4 K 1, The other end of W 5 is made With a beveled surface 6. At the same time U 5 is installed with the possibility of radial movement and periodic contact with its external end with the protrusion 8 P 7. When rotating To 1 bit

the roller cutters 3 rotate and the protrusion 8 in P 7 delivers periodic impacts on the end face. 5. The surface 6 of the latter is pushed into the channel 9 K 1. The drilled core column 10 passes into the expanded part of channel 9 and W 5 sinks into P 7. Protrusion 8 strikes W 5 and through it at the top of the core 10, while the last is cleaved. 2 Il.

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The invention relates to mining, in particular, to the drilling of wells by rock drilling rock cutting tools I with continuous removal (hydrotransport) of a core. i The aim of the invention is to improve the quality of geological exploration through more complete core removal.

; FIG. 1 shows the coring drill bit, a longitudinal section | in FIG. 2 is a section A-A in FIG. 1.: A cylinder ball chisel | (FIG. 1) includes a housing 1 with a well-forming roller 2 and calibrating a hole with the roller 3. In a radial hole 4 on the housing 1 there is a pin 5 having one end; the beveled surface 6, which at the other end enters the annular point 7 on the inner surface

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lower roller cutter 3. In the groove 7 there is a protrusion 8.

The work of the chisel with the kernolom occurs in the following order.

When the bit body 1 rotates, the cutters 3 rotate at a lower speed due to the different rotational speeds of the body 1 and the cutters 3. The protrusion 8 in the groove 7 on the inner surface of the crochet causes periodic blows to the end face of the pin 5, its coroned bead 6 channel 9 in the housing 1.

The drilled core column 10 along the narrowed part of the core-receiving channel 9 with longitudinal ribs 11 and the grooves between them passes into the expanded part of the channel 9 and, having reached the surface 6 of the pin 5, freely pushes the pin 5 into the groove 7. The protrusion 8 located in it hits the pin 5 and through it across the top of the core column 10. Core column 10 is cleaved along line 12, which represents the border of the transition from the narrowed part of the core receiver channel 9 to the extended part. The broken column 10 is moved away due to the ignition 13 to the wall opposite to the pin 5 and thus avoids its further impact by freely moving further along the core receiving channel 9.

In the same order, barely blowing a piece of core is scooping.

I

Claims (1)

Invention Formula The core roller bit, containing a core-receiver channel, mounted on the case, bore-forming sharoshki with a centerhole in the form of a protrusion on the surface of the core-receiver channel, differs from the fact that, in order to improve the quality of geological exploration due to more complete core removal , it is equipped with calibrating sharoshki, mounted on the housing with the possibility of rotation relative to its longitudinal axis, with a radial hole in the core-receiving channel, and on the inner surface of the calibrating sharoshki - ring groove with BHCTynoMj and the core is made in the form of a pin and installed in the radial hole 314304934 a core-receiver channel with the possibility of cacical contact with its external tor- radial displacement and a period with a protrusion of the annular groove.