Control device for a hydrostatic drive
US4566274A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 1983 |
| Grant date | Jan 28, 1986 |
| Priority date | — |
| Expiry date | Oct 3, 2003 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H61/46
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Disclosed is a control arrangement for a hydrostatic drive of the type having a power-driven adjustable pump, a pressure responsive setting cylinder coupled to the pump, a hydraulic motor connected via pressure conduits to the pump and a measuring motor coupled to the hydraulic motor to rotate with a proportional rotary speed. A supply pump is connected in a control circuit including the measuring motor and a nominal or desired value generator in the form of an adjustable throttle by means of which the desired rotary speed of the hydraulic motor is adjusted. Deviations between the actual and desired speeds produce a differential control flow which is fed to the setting cylinder which adjusts the position of an adjusting member of the pump for so long as until the deviation equals zero.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.