DESCENT OF PANTOGRAPH AND INTERLOCKED SYSTEM OF CONTROLLING SAND SPRAY

摘要

PURPOSE: A control system of a pantograph and spraying sand are provided to save a manipulating time by manipulating only one switch on an emergency and to automatically keep the action of spraying sand. CONSTITUTION: A control system of an engine includes a pantograph selecting switch for manipulating the pantograph, a sand spray switch, a sand spray controller for controlling the spraying of sand based on an order of spraying sand from the pantograph selecting switch and the sand spray switch and a sand sprayer for spraying sand based on the control of the sand spray controller. Herein, the pantograph is dropped, and at the same time, sand is sprayed based on the selection of dropping of the pantograph selective switch. In addition, the pantograph selective switch has a position to spray sand while at the same time, dropping.