17
With the deviator you choose to convey the oil to the valveblock either of the undercarriage part or
of the aerial part. If the coil is not energized, the delivery A is conveyed to the aerial part, the
delivery B is conveyed to the tank. The aerial part uses only one pump. This condition happens
when the machine IS NOT ALIGNED. On the contrary, if the machine is ALIGNED, the deviator
is excited and the oil is conveyed to the undercarriage part.
FUNCTIONING OF THE UNDERCARRIAGE PART.
The oil of the deliveries A and B is conveyed to the two valve-blocks 9 and 10, through which the
two hydraulic drive motors are controlled (14), to the 4 outriggers (12) and to the undercarriage’s
widening cylinders (11). On each of the 4 outriggers are mounted two piloted block valves in series,
on the piston side, flanged near the pin that fixes the cylinder to the structure.
From the right valve-block (10) comes a hose (carry over connection) that goes together with the
delivery of the valve-blocks in the aerial part. The function of this connection is to allow the first
movement of the aerial part, that disalignes or open the machine and
commutes
the deviator 6,
directly feeding the aerial part. A unidirectional valve located on a compact curve at the exit of the
valve-block, prevents the pressured oil from coming back to the tank through the valve-block 10,
when using the aerial part.
Summary of Contents for GOLD LIFT 1470
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