Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
January 15, 2008
Patent Application Number
10513858
Date Filed
December 10, 2003
Patent Citations Received
Patent Primary Examiner
Patent abstract
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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