Hinowa LightLift 15.70 3S, Technical Course Booklet

Page: 62 / 137

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8.5.2 THIRD BOOM
Third boom is moved by one cylinder, this cylinder is equipped with an internal
sensor that measures its opening position.
While lifting third boom, when it’s going to reach its end of the stroke, in order
to achieve a smoother machine handling, movement is automatically
hydraulically decelerated by reducing the opening of proportional valve.
8.5.3 TELESCOPE
Third boom contains the telescope boom and the telescope cylinder.
8.5.4 JIB
Jib is moved by one cylinder, while moving jib the basket is kept level thanks
to the parallelogram system.
8.5.5 BASKET LEVELING
Basket levelling close circuit is composed by two cylinders, one on the basket
and one on the third boom connection rod, basket is automatically kept levelled
while third boom is moving because of the basket cylinder is moved by
connection rod cylinder.
In particular, while third boom is opening, the connection rod cylinder will be
closing so that its oil will be send to the basket cylinder achieving the automatic
basket levelling.
Of course is possible to adjust basket levelling acting on its key.
8.5.6 BASKET ROTATION
Basket rotation is carried out by the basket rotation actuator composed by two
chambers, the maximum rotation possible is 62° on both directions achieving
a total of 124°.
Two black arrows show the basket aligned position.
BASKET LEVELLING
CYLINDER ON
SECOND-THIRD
ROD CONNECTOR
BASKET LEVELLING
CYLINDER ON
BASKET