Unic URW295CR - Oil Flow in In-Out Body; Oil Flow When Crane is Not Operated

10.1Oilflowinthein‑outbody
whennooperationiscarriedout
（１０−１）
Pressurereducing
valve
Emergencyscrew
Oilfedoutofpumpreturnstotankviaback‑pressurevalve
andpressureregulatorvalve.
Pressureinhydrauliccircuitatthispointistobe2MPa.
Workingpressure
ofpumpismaintained
at2Mpa.
Pailotpressurer
Solenoidvalveforunloading
Reliefvalvefor
storinghook
Solenoidvalvefor
storinghook
Pressureregulatorvalve
Backpressurevalve
Mainrelief
valve
Tank
Feedback
Set‑bolt
Solenoidvalvefor
storinghook
Primary
pressure
Secondary
pressure
Solenoidvalve
forunlading
pressurereducingvalve
Pump
Tank
2
Mainreliefvalve
2
Reliefvalveforstoringhook
2
Backpressurevalve
Pressureregulator
valve
2
Emergencyscrew
(stopvalve)
3.0MPa
(30kgf/cm)
20.6MPa(210kgf/cm)
Set‑bolt
(stopvalve)
3.9MPa(40kgf/cm)
Working
pressure
G.P
Pailotpressurer
G.P
1.0MPa
1.0MPa
(10kgf/cm)
Feedback
(10kgf/cm)
2
Portreliefforstoringhook
Solenoidvalve
forunlading
Pressurereducingvalve
GaugeportforPoilotpressure
Mainreliefvalve
Backpressurevalve
3.0MPa(30kgf/cm)
2
2
1.0MPa(10kgf/cm)
Tankport
Solenoidforstoringhook
Accelerator
cylinder
Gaugeport
Needlevalveforreleasing
autmaticstopforover‑winding