| 摘要 |
A device for mounting an appliance (such as a backhoe excavator) on a vehicle (such as a tractor) comprises a fixed frame secured to the vehicle, and a movable frame to which the appliance is pivotally connected by means of a kingpost. The movable frame has elements thereon which are slidable along respective linear guides on the fixed frame, thereby enabling the movable frame to be pivoted relative to the fixed frame under the control of a drive so as to offset the kingpost from the center line of the vehicle. The guides converge at a predetermined angle rearwardly of the vehicle, and the elements subtend the same angle to the kingpost so that the kingpost moves along a straight line at right angles to the vehicle center line as the movable frame is pivoted with respect to the fixed frame. This arrangement enables the appliance to be pivoted relative to the vehicle about a comparatively large angle without fouling the rear (particularly the rear wheels) of the vehicle. |
