Device for controlling the orientation of bore holes
First Claim
1. Device for controlling the orientation of bore holes, particularly in underground coal mining applications, comprising a drill guide rod adapted to be included in a drill string rearwardly of the drill bit and including an outer elongated element and an inner elongated element coaxial with and turnable in said outer element;
- inclinometer means on at least one of said elements and operative for generating signals when inclination of said rod indicates deviation from a predetermined bore hole path;
pivotably adjustable correcting means including a plurality of gib-shaped correcting members pivotally mounted on said outer element;
a plurality of cylinder-and-piston units arranged for engaging said members and pivoting them outwardly away from said outer element to a selectable extent;
a generator to be driven by said inner element; and
magnetic valves supplied from said generator and controlled by signals received from said inclinometer means to thereby control the operation of said cylinder-and-piston units so as to pivot said gib-shaped correcting members.
1 Assignment
0 Petitions
Accused Products
Abstract
A device for controlling the inclination of underground bore holes is in form of a drill guide rod having an outer element and an inner element which rotates coaxially in the outer element. Gib-shaped members can be pivoted out from the outer element in the same manner as the ribs of an umbrella, and electrical inclinometers in the rod furnish the signals which control the time and degree of such pivoting.
49 Citations
18 Claims
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1. Device for controlling the orientation of bore holes, particularly in underground coal mining applications, comprising a drill guide rod adapted to be included in a drill string rearwardly of the drill bit and including an outer elongated element and an inner elongated element coaxial with and turnable in said outer element;
- inclinometer means on at least one of said elements and operative for generating signals when inclination of said rod indicates deviation from a predetermined bore hole path;
pivotably adjustable correcting means including a plurality of gib-shaped correcting members pivotally mounted on said outer element;
a plurality of cylinder-and-piston units arranged for engaging said members and pivoting them outwardly away from said outer element to a selectable extent;
a generator to be driven by said inner element; and
magnetic valves supplied from said generator and controlled by signals received from said inclinometer means to thereby control the operation of said cylinder-and-piston units so as to pivot said gib-shaped correcting members. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
- inclinometer means on at least one of said elements and operative for generating signals when inclination of said rod indicates deviation from a predetermined bore hole path;
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15. Device for controlling the orientation of bore holes, particularly in underground coal mining applications, comprising a drill guide rod adapted to be included in a drill string rearwardly of the drill bit and including an outer elongated element and an inner elongated element coaxial with and turnable in said outer element;
- inclinometer means on at least one of said elements and operative for generating signals when inclination of said rod indicates deviation from a predetermined bore hole path, said inclinometer means including a plurality of electrically operated inclinometers; and
pivotably adjustable correcting means on one of said elements and operative for correcting the deviation indicated by said signals.
- inclinometer means on at least one of said elements and operative for generating signals when inclination of said rod indicates deviation from a predetermined bore hole path, said inclinometer means including a plurality of electrically operated inclinometers; and
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16. Device for controlling the orientation of bore holes, particularly in underground coal mining applications, comprising a drill guide rod adapted to be included in a drill string rearwardly of the drill bit and including an outer elongated element and an inner elongated element coaxial with and turnable in said outer element;
- inclinometer means on at least one of said elements and operative for generating signals when inclination of said rod indicates deviation from a predetermined bore hole path;
pivotably adjustable correcting means on one of said elements and operative for correcting the deviation indicated by said signals; and
an eccentric mounted on said turnable inner element of said guide rod.
- inclinometer means on at least one of said elements and operative for generating signals when inclination of said rod indicates deviation from a predetermined bore hole path;
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17. Device for controlling the orientation of bore holes, particularly in underground coal mining applications, comprising a drill guide rod adapted to be included in a drill string rearwardly of the drill bit and including an outer elongated element and an inner elongated element coaxial with and turnable in said outer element;
- inclinometer means on at least one of said elements and operative for generating signals when inclination of said rod indicates deviation from a predetermined bore hole path;
pivotably adjustable correcting means on one of said elements and operative for correcting the deviation indicated by said signals; and
a generator on said outer element and operative to be driven by rotation of said inner element.
- inclinometer means on at least one of said elements and operative for generating signals when inclination of said rod indicates deviation from a predetermined bore hole path;
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18. Device for controlling the orientation of bore holes, particularly in underground coal mining applications, comprising a drill guide rod adapted to be included in a drill string rearwardly of the drill bit and including an outer elongated element and an inner elongated element coaxial with and turnable in said outer element;
- inclinometer means on at least one of said elements and operative for generating signals when inclination of said rod indicates deviation from a predetermined bore hole path;
pivotably adjustable correcting means on one of said elements and operative for correcting the deviation indicated by said signals; and
an electrical generator including a stator constituted by an inner circumferential surface of said outer element, and a rotor constituted by an outer circumferential surface of said inner element.
- inclinometer means on at least one of said elements and operative for generating signals when inclination of said rod indicates deviation from a predetermined bore hole path;
Specification