| 摘要 |
There is disclosed a releasable coupling device for coupling a first trailed agricultural implement behind a second trailed agricultural implement which is to be drawn behind a tractor, in which the coupling device comprises a connector link having a first end which is adapted for coupling with the second implement and a second end which is adapted to be coupled with a draw hitch (5) provided on the first implement. The coupling provided at the second end of the connector link comprises a coupler (7) having a forwardly facing V-shaped guide (6, 6') which is engageable with the draw hitch (5) to couple the first implement (3) with the connector link, a receiving slot (14) provided in the coupler (7) and arranged to receive the draw hitch (5) as it is guided thereto by the guide, a rocker (15) pivotally mounted on the coupler (7) for movement between an arresting position in which it extends across the receiving slot (14) so as to be engageable with the draw hitch (5) in order to transmit traction from the connection link to the first implement (3) when the hitch (5) is coupled with the connector link, and a withdrawn position which permits the draw hitch (5) to move along the slot (14) in order to release the coupling of the first implement (3) with the connector link. <IMAGE>
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