| 摘要 |
A coupler for a backhoe or other excavator includes a frame including an upper portion and a lower portion. The upper portion is adapted to be secured to an associated backhoe or excavator arm. The lower portion includes a first hook adapted to mate releasably with a first associated attachment pin and includes a second hook adapted to mate releasably with a second associated attachment pin. A lock system includes at least a first safety lock that is movably connected to the frame and that moves relative to the first hook between an engaged position for capturing the first associated attachment pin in the first hook and a disengaged position for releasing the first associated attachment pin from the first hook. An actuator is adapted to move the first safety lock selectively between its engaged and disengaged positions. At least a first lock arm is movably connected to the frame. The first lock arm is movable between a locked position and an unlocked position. The first lock arm engages and retains the first safety lock in its engaged position when the first lock arm is in its locked position. The first lock arm is selectively movable from its locked position to its unlocked position by contact between a portion of the first lock arm and the associated backhoe or excavator arm when the frame is moved to a curled position relative to the associated backhoe or excavator arm.
|
