Hydrostatic travelling drive
US5473895A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1993 |
| Grant date | Dec 12, 1995 |
| Priority date | — |
| Expiry date | Mar 2, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2059/6876
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The invention relates to a hydrostatic travelling drive for a vehicle, having a primary-adjustable and secondary-adjustable hydrostatic driving gear, which comprises at least two hydraulic machines in the form of a hydraulic pump drivable by a drive motor of the vehicle and a hydraulic motor connected to the hydraulic pump by way of at least one operating line, both of which can be adjusted in their respective stroke volume in dependence upon a control signal changing with the load of the driving gear. To avoid disturbances of the secondary adjustment of the hydrostatic driving gear through momentarily or rapidly occurring fluctuations of the driving-gear load, as control signal for adjusting the hydraulic motor a travelling-speed signal generated by a sensor device and corresponding with the travelling speed of the vehicle is used which with increasing travelling speed effects a swinging-back of the hydraulic motor, i.e. an adjustment in the direction of its minimum stroke volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.