Maneuvering portion structure of an excavation work vehicle

Details Maneuvering portion structure of an excavation work vehicle Maneuvering portion structure of an excavation work vehicle

F - Mech Eng,Light,Heat,Weapons

15

B

138/69.13

F15B 21/02 (2006.01)

Patent

CA 1167348

ABSTRACT The present invention provides a control handle for an excavation work vehicle, comprising a maneuvering valve for boom swivelling, a maneuvering valve for up-and-down boom rocking, a maneuvering valve for arm rocking, and a man- euvering valve for bucket pivoting, said maneuvering valves being disposed substantially in parallel and being interlock- ingly connected via four parallel interlocking systems employ- ing push-pull rods to two maneuvering levers adapted for free rocking movement in both longitudinal and transverse direc- tions relative to the machine body such that each lever is capable of actuating a pair of said maneuvering valves, sim- ultaneously or separately, and an intermediate interlocking mode change-over mechanism for changing the mode of the interlocking between said two maneuvering levers and said four maneuvering valves.

363093

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