| 摘要 |
A hydrostatic drive has at least one hydraulic source with a hydraulic flow which can be varied continuously from zero and at leas two hydromotors connected in parallel for driving a component. A mechanical connection is located between the component and each hydromotor. To obtain a continuously variable, relatively high demultiplication ratio which includes the range for a hill climbing ability of a vehicle crane of 60 % up to a maximum speed of 62 km/h, the parallel branches consisting of the hydromotors (5, 6; 35...; 65...; 81) and the mechanical connections (8, 10; 41...; 88) have different products obtained by multiplying the torque constants (k) of the corresponding hydromotor (5, 6; 35...; 65...; 81) at maximum absorption volume by the reduction ratio (i) of the associated mechanical connection (8, 10; 41...; 88), the hydromotors(s) (5; 35, 35a to 37, 37a; 81, 82) in one branch with a product (k i) greater than the smallest product present can be varied continuously up to an absorption volume of zero and can be disconnected from the component (9; 20; 89) by means of a force-engagement coupling (7; 45 ...; 85, 86).
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