Unic URW295CR - Oil Flow During Hook Storing Operation

Feedback
Core
Workingpressure
ofpumpismaintained
at6Mpaorless.
Pilotpressure
3MPa
Spool
Ｐ
Mainrelief
valve
1
（１０−４）
Mainreliefvalveopenswhenthehookhasbeenstored
andthereliefvalveforstoringhookisactuated.
Oilfedoutofpump,whilegeneratingpressureof
6Mpa,allowssurplusoiltoflowintothetank.
Pressurereducing
valve
Emergencyscrew
Solenoidvalveforunloading
Reliefvalve
forstoringhook
Solenoidvalve
forstoringhook
Pressureregulatorvalve
Backpressurevalve
Tank
Set‑bolt
10.4Oilflowinthein‑outbodywhenhookisbeing
woundupbyhookstoringoperation
P1
Solenoidvalve
forstoringhook
Solenoidvalve
forunlading
pressurereducingvalve
Pump
Tank
Mainreliefvalve
Reliefvalveforstoringhook
Backpressurevalve
Pressureregulator
valve
Emergencyscrew
(stopvalve)
3.0MPa
(30kgf/cm)
20.6MPa(210kgf/cm)
Set‑bolt
(stopvalve)
3.9MPa(40kgf/cm)
G.P
Pailotpressurer
G.P
1.0MPa
(10kgf/cm)
1.0MPa
(10kgf/cm)
2
2
2
2
2
Primary
pressure
Secondary
pressure
Working
pressur
Feedback
Windingup