| 摘要 |
1,179,382. Excavators. RUSTON BUCYRUS Ltd. 18 Jan., 1968 [20 Jan., 1967], No. 2753/68. Heading E1F. [Also in Division F1] Cooling of a hydraulic system for driving an earth excavator or a crane and comprising hydraulic motors 34 to 36 Fig. 1 supplied by pumps 29, 30 driven by a diesel engine 24 and including control valves 32, 33 connected by linkages 37 to a panel in the excavator cab 23 is effected by atmospheric air drawn by the engine fan 26 through inlets 18, 19 on opposite sides 11, 12 of a housing 10 enclosing the system, over the system components, and discharged through an outlet 16 in the rear wall 14 of the housing 10. The cab 23 and housing 10 are mounted on a conventional revolving frame 2.
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