Single pull macgregor type hatch cover.pdf - Cochin University of ...
Single pull macgregor type hatch cover.pdf - Cochin University of ...
Single pull macgregor type hatch cover.pdf - Cochin University of ...
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2.5 PIGGY BACK<br />
2.5.1 Description<br />
Figure 2.5 Piggy <strong>type</strong><br />
Source: - Walter Vervloesem - IMCS<br />
Lift and roll <strong>cover</strong>s are a development <strong>of</strong> rolling <strong>cover</strong>s and example is illustrated in<br />
fig. Each <strong>cover</strong>s consists <strong>of</strong> two panels, one <strong>of</strong> which has powered wheels. In the way<br />
<strong>of</strong> the ‘dumb’ panel, four hydraulic rams which act vertically upwards are fitted with<br />
the coaming. These engage in lugs on the side <strong>of</strong> the panel to lift it high enough above<br />
the coaming for the motorized panel to roll underneath. The dumb panel is then<br />
lowered onto the motorized panel so that both can be moved together. The side<br />
coaming can be extended so that the two panels can be stowed beyond the <strong>hatch</strong> end.<br />
Alternatively these <strong>cover</strong>s can be side rolling, stowing abreast the <strong>hatch</strong>way. There is<br />
in the theory no limit to the size <strong>of</strong> these <strong>cover</strong>s composed <strong>of</strong> two 100-tonne panels<br />
for 26m by 23m <strong>hatch</strong> ways have been supplied for forest product carriers.<br />
15
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