Patent ID: 7464778
Filing Date: 2008-12-16
Classification: B60K,B60L,B60W,B60Y,B66F,Y02P,Y02T,Y10S

Abstract:
1. A cargo handling apparatus of a cargo handling industrial vehicle, comprising: an engine; a generator-motor; a clutch for connecting/disconnecting a transmission of power between the engine and the generator-motor; electric storage means connected to the generator-motor; cargo handling means for performing cargo handling work; load detection means for detecting an amount of a cargo handling load; and a controller, wherein the generator-motor is driven in one of: a generator mode of generating electric power by being driven by power of the engine transmitted through the clutch and storing the electric power in the electric storage means; and a motor mode of being driven as a motor by receiving a supply of electric power from the electric storage means, when the load detected by the load detection means is smaller than a predetermined value, the controller sets the engine in a stopped or idle state, disconnects the transmission of the power between the engine and the generator-motor by the clutch, and drives the cargo handling means by the generator-motor in the motor mode, thereby performing the cargo handling work; when the load detected by the load detection means becomes the predetermined value or more during the cargo handling work in a state where the transmission of the power between the engine and the generator-motor is disconnected by the clutch, the controller starts an increase of the number of revolution of the engine while increasing an output of the generator-motor in the motor mode, and when the number of revolution of the engine is made equal to the number of revolution of the generator-motor, the controller connects the transmission of the power between the engine and the generator-motor by the clutch, and drives the cargo handling means by both of the power of the engine and the power of the generator-motor, thereby performing the cargo handling work.