| 摘要 |
A ground engaging apparatus ( 10 ) has a support plate ( 50 ) pivotally attached to a frame ( 100 ); a pair of arms ( 30, 40 ) interconnecting the support plate ( 50 ) and a shank support ( 60 ), which supports a shank ( 70 ) and ground follower ( 90 ) and first and second biasing rams or springs ( 200, 300 ), to maintain the ground follower ( 90 ); against the ground ( 91 ) but allow controlled break out of a ground opening, or tillage, tool ( 81 ) if an obstruction is engaged. |
