Drive system for mobile vehicles
AssigneeZF Friedrichshafen AG
InventorsJürgen Legner, Wolfgang Rebholz
Life of this patent
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Abstract
A drive system for a mobile vehicle has hydraulic motors (1, 2) arranged in a transmission housing (3), which drive a drive output shaft (22) via a totalizing transmission gearset, the totalizing transmission and the hydraulic motors (1, 2) being arranged within the transmission housing (3).
Claims13
A drive system for a vehicle with at least two hydraulic motors (1, 2) connected with a summing transmission gearset so that torque from the at least two hydraulic motors is summed together for driving a drive output shaft (22), the at least two hydraulic motors (1, 2) each having a plurality of cylinders and associated pistons, and the summing transmission gearset and the at least two hydraulic motors (1, 2) are accommodated within a transmission housing (3);
- wherein each of the at least two hydraulic motors (1, 2) is connected to and drives a respective crankshaft (6, 9) which forms an output thereof, and a pressure medium feed (37, 38), for adjusting a stroke volume of the plurality of cylinders of the at least two hydraulic motors (1, 2), is located adjacent one end of respective crankshaft (6, 9).
A drive system for a vehicle with at least two hydraulic motors (1, 2) connected with a summing transmission gearset so that torque from the at least two hydraulic motors is summed together for driving a drive output shaft (22), the at least two hydraulic motors (1, 2) each having a plurality of cylinders and associated pistons, and the summing transmission gearset and the at least two hydraulic motors (1, 2) are accommodated within a transmission housing (3);
- wherein each of the at least two hydraulic motors (1, 2) is connected to and drives a respective crankshaft (6, 9) which supports a respective gear (7, 10), and both respective gears (7, 10) drive at least one other gear (8, 11) which drives the drive output shaft (22), and a pressure medium feed (37, 38), for adjusting a stroke volume of the plurality of cylinders of the at least two hydraulic motors (1, 2), is located adjacent one end of respective crankshaft (6, 9).
A drive system for a vehicle with at least two hydraulic motors (1, 2) connected with a summing transmission gearset so that torque from the at least two hydraulic motors is summed together for driving a drive output shaft (22), the at least two hydraulic motors (1, 2) each having a plurality of cylinders and a plurality of pistons, and the summing transmission gearset and the at least two hydraulic motors (1, 2) are accommodated within a transmission housing (3);
- wherein each of the at least two hydraulic motors (1, 2) is connected to and rotates a respective crankshaft (6, 9) which both drive a common drive output shaft (22), the plurality of pistons are coupled to and rotate the respective crankshaft (6, 9) as each piston reciprocates within the respective cylinder, and a pressure medium feed (37, 38), for adjusting a stroke volume of the plurality of cylinders of the at least two hydraulic motors (1, 2), is located adjacent one end of respective crankshaft (6, 9).
Dependencies are inferred from the claim text.