| 摘要 |
<p>A blocking bar 28 for a latching mechanism 26 of an excavator coupler 10. The blocking bar 28 has a free end 31 to block movement of the latch 26. Catch mechanism 46 selectively restrains movement of the blocking bar 28. The catch 46 may be a hook which is pivotally attached to the blocking bar. The catch may engage a member on the frame of the coupler. The blocking bar can be powered or gravity driven. Movement of the blocking bar can be used for selective control of the latch mechanism. The catch mechanism 46 can prevent release of the blocking bar 28 unless the coupler 10 is inverted towards a crowd position. When the blocking bar is in its blocking position the catch may fall into engagement with the frame of the coupler.</p> |
