| 摘要 |
<p>A linkage system particularly for vehicle-carried lifting arrangements comprising a link whose one end is pivotally connected to a link arm at a location between one end of the link arm and the other end thereof, said one end being provided with a load-carrying means and said other end being mounted in a horizontal guide which is arrayed, during a lifting or lowering operation, to guide said other end of said link arm substantially linearly and horizontally. A lifting-force generating means, for example a hydraulic piston-cylinder arrangement, is connected with the link in a manner such that, during a lifting or lowering operation, the end of the link arm having the load-carrying means can be moved vertically in a substantially straight line from a height position below the horizontal guide to a height position above the guide or vice versa whilst simultaneously moving the end of the link arm mounted in the guide horizontally. The other end of the link is pivotally mounted on the vehicle and the hydraulic cylinder is connected with the link at a location between the two ends thereof.</p> |
