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3. Auxiliary control units
3.1 Power-assisted displacement control
The operating forces of closed-circuit pumps are generally high, depending on operating conditions.
To ensure precise, stable, low-effort operation, the pumps are equipped with hydraulic power-assisted controls, the schematic diagram of which corresponds to that shown in figure 19 .
The input for this assisted control can be mechanical (lever or cable), pneumatic (cylinder), hydraulic (low-pressure manipulator), electrical (electric cylinder) or electronic (servovalve).
Despite their high cost, servovalve solutions seem to be gaining ground to the detriment of others. They...
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Auxiliary control units
Circuit auxiliaries
Standardization
Association française de normalisation AFNOR
- Transmissions hydrauliques. Brides carrées monobloc avec collets encastrés PN 250 et PN 400 - Dimensions. - NF E 48-054 - 12-98
- Transmissions hydrauliques. Brides et implantations rectangulaires avec collets encastrés PN 250 et PN 400 - Dimensions. - NF E 48-055 - 12-86
- Transmissions hydrauliques. Fluides. Méthodes de prélèvement en flacons sur un circuit...
Organizations
Association française de normalisation AFNOR
International Organization for Standardization ISO
Comité européen des transmissions oléohydrauliques et pneumatiques CETOP
Society of Automative Engineers SAE
Deutsches Institut für Normung DIN
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