CA2178814A1 - An in-hole rock drilling machine - Google Patents

An in-hole rock drilling machine

Info

Publication number
CA2178814A1
CA2178814A1 CA002178814A CA2178814A CA2178814A1 CA 2178814 A1 CA2178814 A1 CA 2178814A1 CA 002178814 A CA002178814 A CA 002178814A CA 2178814 A CA2178814 A CA 2178814A CA 2178814 A1 CA2178814 A1 CA 2178814A1
Authority
CA
Canada
Prior art keywords
machine
housing
guided
length
rock drilling
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002178814A
Other languages
French (fr)
Other versions
CA2178814C (en
Inventor
Per Gustafsson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
G-DRILL AB
Original Assignee
Individual
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
Priority claimed from SE9304125A external-priority patent/SE505170C2/en
Application filed by Individual filed Critical Individual
Publication of CA2178814A1 publication Critical patent/CA2178814A1/en
Application granted granted Critical
Publication of CA2178814C publication Critical patent/CA2178814C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)

Abstract

An in-hole rock drilling machine has a tubular housing (12) with a piston hammer (24) that is guided at its ends only. Its front portion is guided by a guide bushing (18) that takes support against a shoulder (13) in the housing and its rear end is guided by a valve housing (20). The guide bushing (18), the valve housing (20) and a distance tube (19) between them are clamped together against the shoulder (13) by means of a back head (22) screwed to the machine housing (12). The distance tube (19) is adapted to be compressed axially at least 0.3 pro mille of its length and preferably between 0.8 and 3 pro mille of its length when the back head is screwed into position. This arrangement gives a robust machine and to assemble and to disassemble the machine will be simple. The tolerances in length will not be critical which makes the machining of the various machine parts less critical.
CA002178814A 1993-12-13 1994-12-13 An in-hole rock drilling machine Expired - Fee Related CA2178814C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9304125A SE505170C2 (en) 1993-12-13 1993-12-13 Lowering drill with compressible spacer
SE9304125.9 1993-12-13
PCT/SE1994/001201 WO1995016848A1 (en) 1993-12-13 1994-12-13 An in-hole rock drilling machine

Publications (2)

Publication Number Publication Date
CA2178814A1 true CA2178814A1 (en) 1995-06-22
CA2178814C CA2178814C (en) 2005-12-20

Family

ID=35645812

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002178814A Expired - Fee Related CA2178814C (en) 1993-12-13 1994-12-13 An in-hole rock drilling machine

Country Status (1)

Country Link
CA (1) CA2178814C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105156107B (en) * 2015-07-06 2017-05-17 中国矿业大学 Ultrahigh-pressure rotary pulse water jet rock breaking mechanism

Also Published As

Publication number Publication date
CA2178814C (en) 2005-12-20

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20131213