| 摘要 |
<p num="1"><br/> In an aspect of the invention a ripping mechanism for a vehicle is <br/>provided which includes a support frame, a ripping member and an impact <br/>mechanism, such as a vibrator, which is configured to reciprocate the ripping <br/>member forwardly and rearwardly about a transverse pivot axis. The ripping <br/>member is mounted within a sleeve that pivots with the ripping member about <br/>the <br/>pivot axis, while at the same time selectively permitting movement of the <br/>ripping <br/>member along the sleeve. The ripping member may thereby be raised or lowered <br/>relative to the sleeve in order to adjust the depth of the engagement head <br/>relative <br/>to the support frame.<br/>
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