Electro-Hydraulic Mobile Valves, Applications and Selection Method

Transcription

Electro-Hydraulic Mobile Valves, Applications and Selection Method
Bob Pettit
© HAWE Hydraulik SE | 05.11.2013
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Electro-Hydraulic Mobile Valves
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Directly mounted CANBUS Controls
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Bank type coupled with directional seated
valves for zero leak required functions
Explosion proof solenoids for hazardous
locations. Oil & Gas, Mining
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Bank or sandwich
Manifold mount
Mono block
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Electro-Hydraulic Mobile Valves - Applications
Aerial Devices, Cranes, Utility Vehicles
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Mining
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Drilling
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Oil & Gas
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Agriculture
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As compared to an Industrial Valve
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Electro-Hydraulic Mobile Valves - Capabilities
Inlet Sections
Open or closed center for fixed or variable displacement pumps
Spool (metering piston)
3-way flow controller
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Inlet Sections
Open or closed center for fixed or variable displacement pumps
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Inlet Sections – Additional Functions
Integrated Pressure reducing valve for
internal supply of Electrical actuation
Integrated dampening elements for
oscillation control of LS system
Idle circulation and pressure control functions
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Inlet Sections – Additional Functions
Integrated Pressure reducing valve for
internal supply of Electrical actuation
Integrated dampening elements for
oscillation control of LS system
Idle circulation and pressure control functions
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Work Sections
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Work Sections–Spools–Flow Patterns
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Work Sections-Spools-Characteristics
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Work Sections-Spools-Flow Options
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Work Sections-Compensated or non comp
Compensated sections
Load independent speed control
Non-compensated sections
flow will follow the path of least resistance
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Work Sections-Additional Functions-Pressure Limiting
Pressure Limiting provides the ability to limit pressure in any given
work port to something less than system pressure.
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Work Sections-Additional Functions-Overload Protection
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Work Sections-Additional Functions-Pressure Control
Remote Pressure Control
Proportional Pressure Control
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Work Sections-Additional Functions
micro switch for monitoring
the spool‘s idle position or
directional movement
Analog signal for monitoring the spool direction & position
Analog
signal
Stro
ke
on/off-signal
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Work Sections-Additional Functions
Prop. pressure limiting function of individual functions
Functional shut-off / shut-off of individual functions
Travel indicator (LVDT-Hall-sensor) - spool monitoring
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Work Sections-Add on Blocks
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Example Circuit
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Questions?
Thank You!
Contact: [email protected]
704-927-5603
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Electro-Hydraulic Mobile Valves, Applications and Selection Method

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