CONTROLLING EQUIPMENT OF RUNNING OF REACH FORKLIFT

摘要

PURPOSE:To obtain controlling equipment or running of a reach forklift which makes it possible to drive discrete drive motors driving right and left front wheels and rear wheels, by a drive circuit constructed of one chopper circuit, and to simplify a circuit construction and the content of control and also is advantageous in terms of the cost. CONSTITUTION:A right drive motor 5R is connected to a contactor 40 for the right motor and a left drive motor 5L to a contactor 41 for the left motor in series respectively, while the two are connected in parallel between a contactor 42 for forward movement of front wheels and a contactor 43 for backward movement of the front wheels. The respective switching ends of the contactor 42 for the forward movement of the front wheels and the contactor 43 for the backward movement of the front wheels are connected onto the plus side of a battery 24 through a contactor 25 for regeneration and onto the minus side of the battery through a main transistor 28 respectively. Besides, a motor 9 for running is connected between the contactor 25 for regeneration and the main transistor 28. The main transistor 28 is subjected to a chopper drive by a chopper signal generated by CPU in a controller 23.