Hydraulische Antriebseinrichtung fuer landwirtschaftliche Arbeitsmaschinen,insbesondere Maehdrescher

摘要

1,074,212. Combine harvesters. INTERNATIONAL HARVESTER CO. March 2, 1965 [March 3, 1964], No. 8825/65. Heading A1F. [Also in Divisions B7 and F2] A combine harvester having main propulsion wheels 17 driven by individual hydraulic motors 22 through separate change-speed gearing 19 has steerable wheels 165 each driven through separate change-speed gearing by auxiliary hydraulic motors 169 (Fig. 11, not shown). The auxiliary motors 16 are supplied from an engine-driven pump feeding the main motors 22 through a pressure reducing valve which ensures that the auxiliary motors 169 are effective only if the main wheels 17 slip. The main and auxiliary change-speed gears are conjointly controlled from a lever 14 through linkage 20, 21, 168.