Crushing plant and method for controlling the same
AssigneeSandvik Intellectual Property AB
InventorsJonny Wallin, Christer Dagh, Olle Hedin, Tommy Renberg
Life of this patent
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Abstract
There is described a crushing plant and a method for controlling the same. The crushing plant includes a crusher (1) and a feeding arrangement (3), and is driven by a diesel engine (13). A load value related to the diesel engine is retrieved e.g. by means of a J1939 interface. If the retrieved value exceeds a predetermined threshold value, the control loop of the feeding arrangement (3) is altered. Thereby it can be avoided that the diesel engine (13) stalls, such that continuous operation of the crushing plant may be ensured.
Claims11
A crushing plant comprising
- a crusher;
- a drive unit which drives the crusher, and
- a feeding arrangement which feeds raw material to the crusher, the feeding arrangement comprising means for regulating a raw material level in connection with the crusher,
- wherein the drive unit being a diesel engine,
- wherein the crushing plant further comprises:
- means for retrieving a parameter value which is correlated to the load of the diesel engine,
- means for comparing the retrieved value with a threshold value, and
- means for decreasing the feeding arrangement speed if the retrieved value exceeds the threshold value, and
- wherein a hydraulic coupling is arranged on a shaft between the diesel engine and the crusher, the crushing plant comprises means for retrieving first and second speed values relating to the in- and outgoing shafts of the hydraulic coupling, and means for providing the load parameter value based on the difference between the first and second speed values.
A method for controlling a crushing plant comprising a crusher, a drive unit which drives the crusher, and a feeding arrangement which feeds raw material to the crusher, the feeding arrangement comprising means for regulating a raw material level in connection with the crusher, the method comprising:
- retrieving a parameter value which is correlated to the load of the drive unit, wherein the drive unit is a diesel engine, a hydraulic coupling being arranged on a shaft between the diesel engine and the crusher,
- comparing the retrieved value with a threshold value, and
- decreasing the feeding arrangement speed if the retrieved value exceeds the threshold value,
- wherein retrieving the parameter value includes retrieving first and second speed values relating to the in- and outgoing shafts of the hydraulic coupling, and providing the load parameter value based on the difference between the first and second speed values.
Dependencies are inferred from the claim text.