| 摘要 |
<p>A THREE POINT LINKAGE A three point linkage for attaching a working machine to a vehicle includes two lower guide members, a substantially U-shaped coupling frame pivotally connected at its ends with the lower guide members, and an upper guide member supported by tension springs from the U-shaped coupling frame. A length adjusting device is carried by the upper guide member for longitudinally varying its length. The upper guide member can be secured in various adjusted length positions. A link is connected between the coupling frame and the length adjusting device for actuating the adjusting device to vary the length of the upper guide member upon the application of pressure to the coupling frame. A catch hook for connection to the working machine is carried at one end of the upper guide member and the hook can be locked and unlocked by movement of the coupling frame.</p> |
