초록 ▼

An apparatus for controlling the tilt of a rear axle of a forklift is disclosed. A locking mechanism, which includes a hydraulic damper and a shutoff valve, locks the rear axle against tilt. A controller determines that a locking condition for locking the rear axle is satisfied when at least one of

An apparatus for controlling the tilt of a rear axle of a forklift is disclosed. A locking mechanism, which includes a hydraulic damper and a shutoff valve, locks the rear axle against tilt. A controller determines that a locking condition for locking the rear axle is satisfied when at least one of the centrifugal acceleration acting on the forklift and the rate of change of the yaw rate is equal to or greater than a predetermined determination value. The controller estimates the location of the center of gravity in the fore-and-aft direction of the forklift based on the tilt angle of a forks, the height of the forks and weight of an object on the forks. When determining that the driving force of the drive wheels is not sufficiently transmitted to the road surface based on the estimated location of the center of gravity, the controller does not permit the locking of the rear axle even if the locking condition is satisfied.

대표청구항 ▼

[ What is claimed is:] [1.] An apparatus for controlling the tilt of an axle, the axle being supported by a body frame of an industrial vehicle to be tiltable in a vertical direction, wherein the vehicle has a front wheel and a rear wheel that are spaced apart by a predetermined distance in the fore

[ What is claimed is:] [1.] An apparatus for controlling the tilt of an axle, the axle being supported by a body frame of an industrial vehicle to be tiltable in a vertical direction, wherein the vehicle has a front wheel and a rear wheel that are spaced apart by a predetermined distance in the fore-and-aft direction of the vehicle, a carrier for carrying an object and a locking mechanism for locking the axle against the tilt, wherein the front wheel or the rear wheel is supported by the axle, and wherein one of the front wheel and the rear wheel is a drive wheel that transmits driving force to a road surface, the apparatus comprising:means for detecting the location of the center of gravity in the fore-and-aft direction of the vehicle; andwherein the means for detecting includes a controller for controlling the locking mechanism based on the location of the center of gravity detected by the means for detecting.