Hydrostatic drive specially for mixing drums of ready-mixed concrete vehicles

摘要

PCT No. PCT/EP83/00122 Sec. 371 Date Feb. 29, 1984 Sec. 102(e) Date Feb. 29, 1984 PCT Filed May 13, 1983 PCT Pub. No. WO84/00409 PCT Pub. Date Feb. 2, 1984.A transmission casing wherein is inserted a flooded hydromotor has together with an annular space traversed by a forced flow a double function both as oil cooler and as receiver container of the externally situated pumps. Both the working substance flowing out from said hydromotor and the flushing oil that is conveyed past it are led together on intermediate ribs and vanes in a flow channel meanderingly passed about said hydromotor to the filling pump feed pipe. Intermediate ribs and vanes are connected or integral with the transmission casing that has many ribs and can be exposed to a cooling current directed as needed. Said annular space is spatially separated by stop plates from mechanical gear portions eventually situated in front, but is at the same time oil sump thereof by means of a connecting opening.