| 摘要 |
<p>An apparatus to control oscillation of a grapple device on a transporting vehicle includes a pin disposed through the bore of a housing, and a retaining member associated with the pin and secured from rotation relative to one of the pin and housing. The one of the pin and housing member which is not secured from rotation relative to the retaining member, and the retaining member, together define a cooperating seatable protrusion and recess, of arcuate cross-section. Resilient means are included to urge the retaining member so as to seat the protrusion in the recess. Also included are means for limiting longitudinal movement of the pin under this urging. However, the force of such resilient means may be overcome by rotation of the grapple device relative to a yoke associated therewith about a longitudinal axis of the pin to unseat the protrusion from the recess.</p> |
