Patent ID: 8649945
Filing Date: 2014-02-11
Classification: B60W,E02F,F16H

Abstract:
1. A wheel loader comprising: a working implement having a boom and a bucket; an engine; a hydraulic pump driven by the engine; a movement hydraulic motor driven by hydraulic fluid discharged from the hydraulic pump; an acceleration operation member operated in order to set a target rotation speed for the engine; a traction force control operation section operated in order to switch between an on state and an off state of a traction force control for reducing maximum traction force; a work situation determination section configured to determine whether or not a work situation is digging; an acceleration operation amount determination section configured to determine whether or not an operation amount of the acceleration operation member is a predetermined operation threshold or more; a boom angle determination section configured to determine whether or not a boom angle, which is an angle with regard to a horizontal direction of the boom, is a predetermined angle threshold or more; and a traction force control section configured to reduce the maximum traction force to below the maximum traction force with the traction force control in the off state when the traction force control is in the on state, wherein the traction force control section is configured to increase the maximum traction force when determination conditions including that the work situation is digging, that the operation amount of the acceleration operation member is the predetermined operation threshold or more, and that the boom angle is the predetermined angle threshold or more, are satisfied with the traction force control in the on state.