| 摘要 |
A depth control system for a frame mounted to a movement system, wherein the frame is mounted such that the frame can be raised and lowered in relation to the movement system by a depth adjustment system, the depth control system comprising: a depth control support attached to the depth adjustment system and configured to move with the frame during depth adjustment; a depth control arm extending from the depth control support towards a first end of the frame; a frame guide incorporated to the first end of the frame designed to receive the depth control arm; and a locking mechanism adapted to receive and lock the depth control arm in relation to the frame guide such that the depth control support prevents the frame from moving in at least one direction.
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