专利名称：Lock device for dump trucks发明人：H. Ray Cole申请号：US05/900414申请日：19780427公开号：US04176881A公开日：19791204
摘要：A self acting lock which automatically locks down the dump body of a truck andautomatically releases when the body is to be raised. Two pairs of lever arms which arepivoted together cooperate with a single acting hydraulic cylinder to provide a hoist forraising and lowering the dump body. The upper arms are pivoted to the body and thelower arms are pivoted to a pair of links which are in turn pivotally mounted to the truckframe. Each link carries a hook which engages with a keeper rod carried on the upper pairof arms to lock down the body. A leg extending from the upper arms pivots the links in adirection to engage the hooks with the keeper rod in response to lowering of the dumpbody to the load carrying position. The linkage is arranged such that initial extension ofthe cylinder pivots the links in a direction to release the hooks from the rod beforecontinued extension of the cylinder raises the dump body in the usual manner.
申请人：COLE, H RAY
代理机构：Lowe, Kokjer, Kircher, Wharton & Bowman
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