| 摘要 |
A self-propelled crushing machine comprises a crushing device 20; a hydraulic drive system including a crushing device hydraulic motor 21 for driving the crushing device 20 , a first hydraulic pump 62 for driving the crushing device hydraulic motor 21, and an engine 61 for driving the first hydraulic pump 62; a pressure sensor 151 for detecting a load condition of the crushing device 20; and a controller 84 '' for executing control to increase a revolution speed of the engine 61 in accordance with a detected signal from the pressure sensor 151. Accordingly, even when a heavy load is imposed on the crushing device, a reduction of crushing efficiency can be prevented.
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