CA2198237A1 - Arrangement in boom for rock drilling unit - Google Patents
Arrangement in boom for rock drilling unitInfo
- 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
Links
- 238000005553 drilling Methods 0.000 title abstract 2
- 239000011435 rock Substances 0.000 title abstract 2
- 239000012530 fluid Substances 0.000 abstract 2
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.
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.
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) |
-
1995
- 1995-08-22 CA CA002198237A patent/CA2198237C/en not_active Expired - Fee Related
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 |