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1. 发明申请

WO1988000149A1 ASYMMETRICAL FOUR-BAR TRAILER HITCH 审中-公开
标题翻译：不对称四杆拖拉机HITCH
公开(公告)号：WO1988000149A1
公开(公告)日：1988-01-14
申请号：PCT/US1986001431
申请日：1986-07-09
申请人： GALLATIN, Norman, W.
IPC分类号： B62D53/00
CPC分类号： B62D53/08 , A01D90/12 , B60D1/173
摘要： A tow vehicle (3) and trailer vehicle (5) are connected by a four-bar hitch which has one arm (1) aligned longitudinally with the central longitudinal axes (12, 13) of the vehicles, and a steering arm (6) which is laterally spaced from the main arm. Pivots, (7, 8) at the front and rear ends of the steering arm are forwardly offset with respect to the corresponding pivots (2, 4') of the main arm. The length of the main arm is no greater than about 1.5 times the length of the steering arm. The rear pivot (8) of the steering arm is offset laterally and forwardly from the rear pivot (4') of the main arm, so that the lateral offset is greater than the forward offset. An embodiment is disclosed wherein the forward pivot on the steeering arm is laterally shiftable toward the forward pivot on the main arm to reduce the offtracking of the trailer for certain maneuvering and driving situations. In one embodiment, an upper arm (30) is disposed above and in forwardly convergent relation with respect to the main arm (1) in order to provide a vertical four-bar linkage which allows the tow vehicle to pitch naturally.
摘要翻译：牵引车（3）和拖车（5）通过四杆连接器连接，该四杆连接件具有与车辆的中心纵向轴线（12,13）纵向对齐的一个臂（1）和转向臂（6）其与主臂横向间隔开。在转向臂的前端和后端处的枢轴（7,8）相对于主臂的对应的枢轴（2,4'）向前偏移。主臂的长度不大于转向臂长度的约1.5倍。转向臂的后枢轴（8）从主臂的后枢轴（4'）横向和向前偏移，使得横向偏移大于向前偏移。公开了一种实施例，其中在步进臂上的向前枢轴可横向移动到主臂上的向前枢轴，以减少拖车对于某些操纵和驾驶状况的后掠。在一个实施例中，上臂（30）相对于主臂（1）高于并且向前收敛的关系设置，以便提供一种垂直的四杆连杆，其允许拖车自然地俯仰。

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