| 摘要 |
<p>PURPOSE:To widely open a deck to easily load a long material as on a cargo truck, by dispensing with a secured pillar to directly couple a rear swing board to side swing boards. CONSTITUTION:Pintle members 7, which have outwardly-projecting horizontal pintles 8 having annular grooves 11 and are secured on the right and left ends of the upper edge of a rear swing board 5, and fixed bearers 12, which has contact portions 18 for upwardly supporting the horizontal pintles 8 and are secured on the rear ends of the upper edges of side swing boards 4, are provided. Swing arms 19, which are pivotally coupled to the fixed bearers 12 by shafts 17 and removably engaged in the annular grooves 11 of the pintle members 7 and cooperate with the contact portions 18 to pivotally support the horizontal pintles 8 at the upper parts in a hugged state, and locking members 23, which are pivotally coupled to the tips of the arms 19 to keep the horizontal pintles 8 pivotally supported by the arms, are provided further. The rear swing board 5 is thus directly coupled to the side swing boards 4 without using a fixed pillar, so that a long material can be easily loaded and unloaded into and out of the load box of a dump truck.</p> |
