RU94019386A - Crown bit - Google Patents

Crown bit

Info

Publication number
RU94019386A
RU94019386A RU94019386/03A RU94019386A RU94019386A RU 94019386 A RU94019386 A RU 94019386A RU 94019386/03 A RU94019386/03 A RU 94019386/03A RU 94019386 A RU94019386 A RU 94019386A RU 94019386 A RU94019386 A RU 94019386A
Authority
RU
Russia
Prior art keywords
holes
crown
crown bit
drilling
mining
Prior art date
Application number
RU94019386/03A
Other languages
Russian (ru)
Other versions
RU2083793C1 (en
Inventor
Л.Т. Дворников
Э.Я. Живаго
Original Assignee
Сибирский металлургический институт им.Серго Орджоникидзе
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Сибирский металлургический институт им.Серго Орджоникидзе filed Critical Сибирский металлургический институт им.Серго Орджоникидзе
Priority to RU94019386A priority Critical patent/RU2083793C1/en
Publication of RU94019386A publication Critical patent/RU94019386A/en
Application granted granted Critical
Publication of RU2083793C1 publication Critical patent/RU2083793C1/en

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  • Earth Drilling (AREA)

Abstract

FIELD: mining; may be used in drilling holes with the help of machines of combination drilling. SUBSTANCE: crown bit includes body with internal seating socket for connection of rod and holes for blowing or washing of bore holes. Crown bit body has open conical sockets with geometric axes crossing crown bit for installation of carbide inserts made in the form of truncated cones with taper angle less than the friction angle of materials of insert and body. EFFECT: higher efficiency. 4 dwg

Claims (1)

Изобретение относится к горному делу и может быть использовано для бурения шпуров бурильными установками ударно-поворотного и ударно-вращательного действия. Коронка включает корпус с внутренним посадочным гнездом для соединения ее со штангой и отверстиями для продувки или промывки шпуров. В корпусе коронки выполнены частично открытые конические гнезда с геометрическими осями, перекрещивающимися с осью коронки для установки в них твердосплавных вставок. Вставки выполнены в виде усеченных конусов с углом конусности, меньшим угла трения материалов вставки и корпуса.The invention relates to mining and can be used for drilling boreholes with shock-rotary and rotary-impact drill rigs. The crown includes a housing with an internal landing socket for connecting it to the rod and holes for blowing or washing holes. Partially open conical nests with geometrical axes intersecting with the axis of the crown for installing carbide inserts in them are made in the crown body. The inserts are made in the form of truncated cones with a taper angle smaller than the angle of friction of the materials of the insert and the body.
RU94019386A 1994-05-26 1994-05-26 Drilling bit RU2083793C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU94019386A RU2083793C1 (en) 1994-05-26 1994-05-26 Drilling bit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU94019386A RU2083793C1 (en) 1994-05-26 1994-05-26 Drilling bit

Publications (2)

Publication Number Publication Date
RU94019386A true RU94019386A (en) 1997-04-10
RU2083793C1 RU2083793C1 (en) 1997-07-10

Family

ID=20156405

Family Applications (1)

Application Number Title Priority Date Filing Date
RU94019386A RU2083793C1 (en) 1994-05-26 1994-05-26 Drilling bit

Country Status (1)

Country Link
RU (1) RU2083793C1 (en)

Also Published As

Publication number Publication date
RU2083793C1 (en) 1997-07-10

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