公开(公告)号：US6149374A

公开(公告)日：2000-11-21

申请号：US161351

申请日：1998-09-25

申请人： Brian R. Dershem ,  Steven F. Reynolds ,  Matthew P. Rosefsky

发明人： Brian R. Dershem ,  Steven F. Reynolds ,  Matthew P. Rosefsky

IPC分类号： E02F3/34 ,  E02F9/24 ,  B66C23/00

CPC分类号： E02F9/24 ,  E02F3/3414

摘要： A releasable locking mechanism has a lockbar which locks a hydraulic cylinder in an extended position for holding a liftarm assembly of a machine in a raised position. The lift cylinder has a body and an extendable rod which incorporates structure thereon acting upon the lockbar to release the locked hydraulic cylinder so that the liftarm assembly is moved from the raised position to a lowered position with minimal operator intervention. The operator intervention occurs only when the liftarm assembly is in the lowered position or when the lift cylinder is locked in the extended position. The lockbar is movable between an inoperative position wherein the lockbar is releasably connected to the liftarm assembly and an operative position wherein the lockbar is in bearing engagement with the body of the lift cylinder to prevent retraction of the rod. A release lever is connected to a lift cylinder and is movable between a rest position wherein the release lever is adjacent and substantially parallel with the lift cylinder and a working position wherein a notched end portion of the release lever is forced against a pin assembly releasably connected on the lockbar to lift the lockbar out of bearing engagement with the body of the lift cylinder.

摘要翻译： 可释放的锁定机构具有锁定杆，该锁定杆将液压缸锁定在延伸位置，以将机器的提升臂组件保持在升高位置。 提升缸具有本体和可延伸杆，其结构在其上作用在锁定杆上以释放锁定的液压缸，使得提升臂组件在最小的操作者干预下从升高位置移动到降低位置。 操作人员的干预仅在起重臂组件处于降低位置时或当提升缸锁定在伸出位置时才发生。 锁定杆可以在不可操作的位置之间移动，其中锁定杆可拆卸地连接到提升臂组件和操作位置，其中锁定杆与提升缸的主体承载接合以防止杆的收回。 释放杆连接到提升缸，并且可在静止位置之间移动，其中释放杆相邻并且基本上平行于提升缸以及工作位置，其中释放杆的缺口端部被压靠在可释放地连接的销组件上 在锁定杆上提升锁定杆，使其与提升液压缸体的轴承啮合。