Driving mechanism for mobile vehicles like diggers, loaders and road/motor graders has two hydraulic motors linked to a summation gearbox for summing up the motors' torque and driving a driven shaft

摘要

A summation gearbox fits in a gearbox casing (3), in which first (1) and second (2) hydraulic motors also fit. Any leakage in the hydraulic motors mixes with a pressurized agent in the gearbox casing. The motors are designed as supported radial piston motors. An adjusting piston in a crankshaft has pistons impinged by high pressure.