PRONAR T900, Руководство оператора, Страница: 51 / 153

SECTION 3 Pronar T900
3.11
The sliding wall mechanism makes it possible to compact the material during loading. This is
particularly important when harvesting green fodder because silage is compacted by the
trailer's sliding wall.
The design of the sliding wall mechanism and the arrangement of the system components
are shown in figure (3.6). The system is equipped with two hydraulic cylinders (4) connected
with telescopic cylinder (3). These cylinders are set horizontally and they shift the wall to the
rear along the load box. Cylinders (5) are used for rising the front wall in the final stage of
unloading in order to thoroughly remove the remains of transported material from the load
box. The wall is equipped with rollers for shifting the wall along the load box.
The hydraulic system of the mechanism is supplied with oil from the tractor's external
hydraulic system. Oil pumped from the tractor's hydraulic system is supplied to the trailer's
hydraulic system through hydraulic conduits with quick couplers protected with blue plugs. In
the first stage, the pumped oil makes the wall shift to the rear. The wall shifts until the
connecting arm (6) reaches the position in which the limit valve (7) switches the oil flow to
cylinders (5) that raise the wall. The wall is raised until all remains of transported material are
removed from the load box. After switching the control lever in the tractor, oil is pumped
through the other circuit of the system and the wall is lowered. When the sliding wall is
lowered, the limit valve (8) switches the oil flow from cylinders (5) to the system of horizontal
cylinders (3), (4), which return to their initial position.