Work vehicle having hydraulic apparatus

Patent metadata

Field	Value
Publication number	US-8997786-B2
Application number	US-201313851550-A
Country	US
Kind code	B2
Filing date	Mar 27, 2013
Priority date	Oct 5, 2009
Publication date	Apr 7, 2015
Grant date	Apr 7, 2015

Abstract

Disclosed is a work vehicle having a hydraulic apparatus which can reliably prevent erroneous operation of the valve of the hydraulic apparatus even when the operating lever is moved inadvertently. With this hydraulic apparatus, with operations of a single operating lever in two directions, two valves are operated respectively. Two valve operating links for operating the two valves respectively are pivotally supported to a support shaft provided to a pair of frame plates and a lock pin is provided to the frame plates. The two valve operating links form pin holes. When the two valves are at the neutral positions, the lock pin is inserted into the pin holes with a locking operation of a lock operating tool, thus fixing the valve operating links and locking the valves.

First claim

What is claimed is:

1. A work vehicle having a hydraulic apparatus, comprising:
a single operating lever;
a first valve operable by an operation of the operating lever in a first direction;
a second valve operable by an operation of the operating lever in a second direction intersecting the first direction;
a locking mechanism for locking the operating lever at a neutral position thereof, the locking mechanism including:
a concave member attached to one of a movable support…

Assignees

• Kubota Kk

Inventors

• Tsukatani Hisashi

Classifications

• G05G2009/04714

  Physics · mapped topic

• E02F9/226

  Fixed Constructions · mapped topic

• E02F9/2004 Primary

  Fixed Constructions · mapped topic

• F16K11/20 Primary

  Mechanical Engineering · mapped topic

• E02F9/2267

  Fixed Constructions · mapped topic