Sandvik Intellectual Property Ab

Anders Nilsson

Richard Bern

Kent Nilsson

Mattias Nilsson

Kjell-Åke Svensson

Jonny Wallin

Olle Hedin

Göran Forsberg

Johan Gullander

Per Gothenqvist

Per Göthenqvist

There is described a crushing plant and a method for controlling the same. The crushing plant involves a gyratory crusher () with means for controlling a minimum gap in a crushing chamber, and is driven by a diesel engine (). A load value is retrieved from the diesel engine e.g. by means of a J1939 interface. If the retrieved value exceeds a predetermined threshold value, the minimum gap is increased. Thereby it can be avoided that the diesel engine stalls; such that continuous operation of the crushing plant may be ensured.

Crushing plant and method for controlling the same

A crusher has first and second crushing elements spaced apart to form a crushing gap therebetween. A measuring device is arranged to measure the instantaneous load on the crusher during at least one period to obtain a number of measured values. A calculation device is arranged to calculate a representative load value that is representative of the highest, measured instantaneous load during each such period of time. A control device is arranged to compare the representative load value with a desired value and to control the load on the crusher depending on the comparison.

Method and device for controlling a crusher, and a pointer instrument for indication of load on a crusher

A crusher includes a replaceable first crushing member having a first crusher surface and a replaceable second crushing member having a second crusher surface. The co-operation of the crusher surfaces is defined by at least one crusher setting parameter. From measurements of a quality parameter, which relates to the nature of the crushed material, on at least two different occasions during the service life of a set of replaceable first and second crushing members and on each occasion for at least two different settings of the crusher setting parameter, a control function can be determined that describes a value, of the at least one crusher setting parameter, which on a given occasion gives a crushed material the quality parameter of which is substantially optimal. The control function is utilized for the adjustment of the crusher setting parameter for a subsequent set of replaceable first and second crushing members in such a way that on a given occasion for the subsequent set of replaceable crushing members, a crushed material is also obtained, the quality parameter of which is substantially optimal.

Method and device for the control of a crusher

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Limhamn, Sweden

Anders Nilsson