公开(公告)号：US3837665A

公开(公告)日：1974-09-24

申请号：US40217373

申请日：1973-10-01

申请人： SCHRAMM A

发明人： SCHRAMM A

IPC分类号： B60D1/167 ,  B62D53/06 ,  B62D61/12 ,  B62D63/06 ,  B62D21/14

CPC分类号： B62D53/062 ,  B60D1/167 ,  B62D61/12 ,  B62D63/062

摘要： An elevatable trailer having a tongue adapted to be coupled to a towing vehicle. A frame provided with a tongue guide in which said tongue is movable forwardly and backwardly; and linkage and lever means comprising bell crank arms pivoted on the frame of the trailer and carrying wheels such that the linkage means pivots the bell crank arms and thereby elevates the frame when the tongue is pulled forward and latch means for latching the tongue in forward position relative to the frame for maintaining the frame in elevated position relative to the ground and on the wheels carried by the bell crank arms. The disclosure also relating to novel frame guide and latch means for guiding the tongue relative to the frame and for latching the tongue in forward position. The disclosure also relating to the novel scissor linkage mechanism interconnecting a pair of bell crank arms by means of suspension springs and tension rods to provide efficient tandem axle lifting of an elevatable trailer frame. The disclosure also relating to means for locking wheels of the trailer in relation to the bell crank arms so that the wheels are frictionally held on the ground while the tongue of the trailer is pulled forward and the bell crank arms are thereby pivoted relative to the frame for elevating it upwardly from the ground level.

摘要翻译： 具有适于联接到牵引车辆的舌头的可升降拖车。 一种设置有舌引导件的框架，其中所述舌片可向前和向后移动; 以及连杆和杠杆装置，其包括在拖车的框架上枢转并且承载轮的钟形曲柄臂，使得联动装置枢转钟形曲柄臂，从而当舌头向前拉动时提升框架，并且用于将舌片锁定在向前位置的闩锁装置 相对于框架，用于将框架保持在相对于地面的升高位置和由曲拐臂承载的轮子上。