SU1652505A1 - Core breaker - Google Patents

Abstract

The invention relates to mining and is intended to separate and retain core formed during drilling. The goal is to increase reliability and facilitate core recovery. The core-breaker comprises a housing 1 with windows 2, a ferrule 5, which is movable and spring-loaded relative to the housing 1. The latter is pivotally connected to the upper ends of the hollow ribs (P) 3, inside which are fixed 13 axes 13 spring-loaded levers placed in the windows 2 slots 10 and with rollers 11. fixed between slots 10 for rotation; Ribs 3 are located in windows 2 and interact with the outer surface of lower ends with rollers 11 The core penetrates into the cavity of the core tube, rotates around the axes. When you lift the projectile and levers 12. pressed against the core, cut into it and move down P 3. At the same time, the lower ends of the ribs 2 interact with the rollers 11. move to the core axis, cut it core To hold the core after cutting the core, there are enough levers 12 6 silt (L C

Description

e

9032991

R

 It

-12 -13

FIG. five

FIG. 6

Claims (1)

Claim A core raiser containing a case with windows. a movable and spring-loaded clip relative to the housing, pivotally connected to the upper ends of the hollow ribs, and spring-loaded levers fixed by axes inside the ribs and placed in the windows of the housing, characterized in that, in order to increase reliability and facilitate core extraction, it is equipped with a thrust ring with slots and with rollers fixed between the slots for rotation, while the ribs are located in the windows of the housing with the possibility of interaction with the outer surface of the lower ends with the rollers on the thrust ring. Fig. 3 FIG. C