| 摘要 |
<p>A trailer vehicle of the type having a supporting frame (1) carried by at least one pair of wheels (2) and with a tipping body (4) mounted thereon in such a manner that the tipping pivot is elevated above the frame so as to permit tipping at a greater height, has the tipping body (4) and the pivot support (6) therefor slidably mounted on the frame with actuating means to slide the support and the body forwardly as the body (4) is elevated about the pivot to tip out the contents thereof. In one embodiment, the actuating means are hydraulic rams connected in parallel with the tipping body lifting rams (11) via a proportioning valve so that lifing and sliding occur simultaneously. In another embodiment, a link or arm (40) is provided between the body (4) and the frame (1) in such a manner that the pivot support (6) is caused to slide forwardly as a result of the tipping body (4) being elevated. This arrangement ensures that the centre of gravity of the tipping body and its load does not shift unduly during tipping to cause vertical jack-knifing. </p> |
