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Method for controlling percussion device, software product, and percussion device

A software product and equipment technology, applied in drilling equipment and methods, drilling equipment, drilling automatic control system, etc., can solve the problems of durability of drilling equipment, reduce drilling efficiency and other problems, and achieve good contact effect

Inactive Publication Date: 2007-06-20
SANDVIK MINING & CONSTR OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nowadays, the energy in the reflected wave cannot be effectively used in the drilling, which naturally reduces the drilling efficiency
On the other hand, it is well known that reflected waves can cause problems such as the durability of drilling equipment

Method used

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  • Method for controlling percussion device, software product, and percussion device
  • Method for controlling percussion device, software product, and percussion device
  • Method for controlling percussion device, software product, and percussion device

Examples

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Embodiment Construction

[0032]The rock drilling truck 1 shown in FIG. 1 comprises a carrier truck 2 and at least one feed beam 3 on which a movable rock drilling machine 4 is arranged. With the feed device 5 the rock drilling machine 4 can be pushed towards the rock to be drilled and correspondingly moved away from it. The feed arrangement 5 may have one or more hydraulic cylinders, which may eg be arranged to move the rock drilling machine 4 by means of suitable energy transmission means. The feed beam 3 is typically arranged on a boom 6 which is movable relative to the carrier cart 2 . The rock drilling machine 4 comprises a percussion device 7 for providing impact pulses to a tool 8 connected to the rock drilling machine 4 . Tool 8 may include one or more drill rods and bits 10 . The rock drilling machine 4 may also comprise a rotation device 11 for rotating the tool 8 about its longitudinal axis. During drilling, the tool 8 can be supplied with impact pulses by means of the percussion device 7...

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PUM

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Abstract

The invention relates to a method and software product for controlling a percussion device belonging to a rock-drilling machine, and to a percussion device. The impact frequency of the percussion device (7) is set so that the percussion device (7) forms a new compression stress wave (p) to the tool (8) always when reflected waves (h) from the previous compression stress waves reach a first end (8a) of the tool. This requires that the impact frequency be set proportional to the propagation time of the stress wave, whereby the length of the used tool (8) and the propagation velocity of the stress wave in the tool material are to be noted.

Description

Background technique [0001] The present invention relates to a method for controlling a percussion device, the method comprising: supplying a shock pulse to a tool connectable to a rock drilling machine by the percussion device during drilling; and generating a compressive stress wave on the tool, depending on the tool the velocity of propagation of the material, along with at least a portion of the compressive stress propagating toward the first end of the tool from the first end of the tool to the second end as reflected waves from the second end of the tool; and at The percussion device and its percussion frequency are controlled in the rock drilling rig. [0002] The invention also relates to a software product for controlling percussive rock drilling, the execution of which in a control unit is arranged to perform at least the following actions: controlling a percussive device in a rock drilling machine during drilling so that A shock pulse is provided to a tool which ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25D9/26E21B1/00E21BE21B6/00E21B44/08
CPCB25D9/26E21B1/00E21B6/00B25D2250/221E21B44/08
Inventor 马尔库·凯斯基尼瓦约尔马·梅基艾莫·海林毛里·埃斯科埃尔基·阿霍拉
Owner SANDVIK MINING & CONSTR OY
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