EXPLOSIONSZE?CHNUNGEN l 11
al purrp
Wbrk'ng cyMeri
One-way vake
h
'?
Safety vahe
r-'1
,1.,
7
?vak
)K-'-
l = !==r;1
?
Unhdi'q vake
Oil?
Priixiple speTh?on
1. The resh'idjon d? and the ?nt pi'esau'e ? stve
Ieak oil at tte sarre when no-Ioad, the noload vehide descend
laster, am it can meet the astomers the demand.
2. When tte load is more than 50kg, the system pressure is
8MPa, the conslant pressure c?w sr doses
auhmitiailly, the hydraulic oil Ieaks through ti'e reshidion
d? the whide descend slowly, and this agrees mth the
safety standards.
Attached drawing (3)
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l,Qj
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ff
g
