| 摘要 |
A quick hitching device for detachably mounting an attachment such as a snow plow or a rotary brush to the frame of a road vehicle. The device comprises a quick hitching sub-frame that is detachably connectable to the bottom of the frame of the vehicle, and tiltable with respect to this frame about a first transversal pivot when its rear end is not connected. The device also comprises an attachment supporting sub-frame having a rear end hingedly connected to the hitching sub-frame about a second transversal axis parallel to the first axis, and a longitudinal extensible power jack having one end pivotably attached to the front portion of the hitching sub-frame above the second axis and another end pivotably attached to the front end of the supporting sub-frame. This power jack is actuable to cause the supporting sub-frame to be tilted up and down with respect to the hitching sub-frame between a first extreme position where both of the sub-frames are folded to form an inverted V, with the second transversal axis extending above the ground, and a second extreme position where the hitching sub-frame is fully connected to the vehicle frame and the supporting sub-frame is tilted up to lift up the attachment mounted thereon in an inactive position, the attachment being in active position between these first and second extreme positions. Thus, the device is made in such a way that it lifts up and lowers by itself to reach the vehicle frame and move down from the same. One person only may, without effort and tools and in a very short time, connect or disconnect the hitching sub-frame, thereby eliminating the weight of a permanent attachment.
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