Patent ID: 6413185
Filing Date: 2002-07-02
Classification: B60K,B60L,B60Y,B66F,F16H,Y02P,Y02T,Y10S

Abstract:
A driving system for an industrial truck having a driving device and at least one unit for working motions of the industrial truck, comprising:a combustion engine (1), an adjustable transmission (2) coupled to the engine shaft, a gear assembly (24) the first input shaft of which is directly coupled to the shaft of the combustion engine (1) and the second input shaft (16) of which is coupled to the driven shaft of the adjustable transmission (2), an electric motor (3) the shaft of which is coupled to a third input shaft of the gear assembly (24), a change-over transmission (30) between the driven shaft of the gear assembly (24) and the driving wheels (34, 36) of the industrial truck, a battery (26) which is connected to the electric motor (3) via an electronic power unit (28), a sensor system which measures at least the speeds of the combustion engine (1), the electric motor (3), and the output shafts of the change-over transmission (30) and, if necessary, the charging state of the battery for the electric motor and generates appropriate speed signals, a shaft (10) coupled to the driving system for driving the unit for the working motions of the industrial truck, a governing device (28, 8) which controls the speed of the motors (1, 3) and the gear ratio of the adjustable transmission (2) and actuates the rotary brake and shifts the change-over transmission according to the desired-value signals of the desired-value transmitters actuated by the driver of the industrial truck and on the basis of the output signals of the sensor system.