Patent ID: 8137238
Filing Date: 2012-03-20
Classification: E02F,F16H,Y10T

Abstract:
1. A gearshift controller for an industrial vehicle, comprising: a speed ratio detection unit that detects a speed ratio of speed of an input axis and of an output axis of a torque converter; a gearshift control unit that shifts up a speed stage when the detected speed ratio is equal to or more than a first predetermined value and shifts down the speed stage when the detected speed ratio is equal to or less than a second predetermined value, which is smaller than the first predetermined value; and an operation member with which a downshift to the first speed is instructed by operation thereof by an operator, wherein when the downshift is instructed by the operation member, the gearshift control unit controls the speed stage to be kept at the first speed for a predetermined time period regardless of the speed ratio detected by the speed ratio detection unit, and the gearshift control unit allows switching to the first speed by operation of the operation member while the vehicle is traveling at a second speed and prohibits the switching to the first speed by operation of the operation member while the vehicle is traveling at a third or higher speed.