Sandvik Mining and Construction Oy

Maunu Manttari

Pekka Koivukunnas

Rami Raute

Lasse Tuominen

Vesa Uitto

Sami Hanski

Tuomo Pirinen

Miika Huikkola

Anssi Kouhia

Isto Ahonen

An inlet tube of a sampling device, a rock drilling rig, and a method for taking samples is provided. The inlet tube is mountable to a dust collecting system of a rock drilling rig and is provided with at least one actively controllable homogenizing element forming a physical element for generating disturbance in flow and to thereby homogenize particle distribution of the drilling cuttings in the flow.

Inlet tube, rock drilling rig and method of sampling

A homogenizer for homogenizing flow, a rock drilling rig, and a method for taking samples is provided. The homogenizer is mountable to a dust collecting system of the rock drilling rig and is arranged for effecting on the flow, which contains air and drilling cuttings. The homogenizer includes a channel part through which the flow is directed and at least one air jet for directing air blows to the flow for generating disturbance in the flow and to thereby homogenize particle distribution of the drilling cuttings in the flow.

Homogenizer, rock drilling rig and method of sampling

The invention relates to a method and apparatus for opening threaded joints of drilling equipment () by striking the drilling equipment () with the percussion device of a rock drilling rig () and by measuring vibration originating from the drilling equipment () during striking. In addition to vibration, measuring means () measure a parameter defining at least one additional condition, on the basis of which the decision to stop striking is made.

Method and apparatus for opening threaded joints of drilling equipment

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Tampere, Finland

Maunu Manttari