| 摘要 |
<p>A lock apparatus (10) for a hydraulic cylinder of a variable gauge undercarriage comprises a lock member (16) to engage a sliding member (20, 42), longitudinal movement of the sliding member (20, 42) relative to the lock member determines the width of the variable gauge undercarriage; an engagement actuator (17) to bias the lock member (16) to an engaged position; and a disengagement actuator (18) operably coupled to a control circuit and connected to the lock member (16) for disengaging the lock member (16) from the sliding member (20, 42).</p> |
