CA2198237A1 - Arrangement in boom for rock drilling unit - Google Patents

Arrangement in boom for rock drilling unit

Info

Publication number
CA2198237A1
CA2198237A1 CA002198237A CA2198237A CA2198237A1 CA 2198237 A1 CA2198237 A1 CA 2198237A1 CA 002198237 A CA002198237 A CA 002198237A CA 2198237 A CA2198237 A CA 2198237A CA 2198237 A1 CA2198237 A1 CA 2198237A1
Authority
CA
Canada
Prior art keywords
cylinder
boom
arrangement
space
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
CA002198237A
Other languages
French (fr)
Other versions
CA2198237C (en
Inventor
Mauri Esko
Pauli Lemmetty
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.)
Tamrock Oy
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 FI943980A external-priority patent/FI96054C/en
Application filed by Individual filed Critical Individual
Publication of CA2198237A1 publication Critical patent/CA2198237A1/en
Application granted granted Critical
Publication of CA2198237C publication Critical patent/CA2198237C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

An arrangement in a boom for a rock drilling unit, comprising a boom (1), pivotally connected to a frame (2) about a shaft (3), a lift cylinder (4) between the boom (1) and the frame (2), at the other end of the boom a feed beam pivotally connected about a shaft, parallel to the shaft (3), and a swing cylinder (10) between the feed beam and the boom. In the arrangement the lift cylinder (4) comprises three cylinder spaces, of which the first and second cylinder space (13a, 13b) may be connected to a hydraulic fluid supply for lifting or lowering the boom. The third cylinder space (13c) is inside a hollow piston rod (4b) and the cylinder comprises a fixed servo piston (4c) extending inside the piston rod.
The third cylinder space (13c) is connected to the swing cylinder (10), to its first cylinder space (18a) and the second cylinder space (18b) of the swing cylinder (10) is connectable to a hydraulic fluid supply or receiver simultaneously with the first cylinder space (13a) of the lift cylinder.
CA002198237A 1994-08-30 1995-08-22 Arrangement in boom for rock drilling unit Expired - Fee Related CA2198237C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI943980A FI96054C (en) 1994-08-30 1994-08-30 Arrangement in a rock drilling rig boom
FI943980 1994-08-30
PCT/FI1995/000443 WO1996007013A1 (en) 1994-08-30 1995-08-22 Arrangement in boom for rock drilling unit

Publications (2)

Publication Number Publication Date
CA2198237A1 true CA2198237A1 (en) 1996-03-07
CA2198237C CA2198237C (en) 2006-02-21

Family

ID=35929873

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002198237A Expired - Fee Related CA2198237C (en) 1994-08-30 1995-08-22 Arrangement in boom for rock drilling unit

Country Status (1)

Country Link
CA (1) CA2198237C (en)

Also Published As

Publication number Publication date
CA2198237C (en) 2006-02-21

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20150824