DRIVING METHOD OF TWO-WAY COMPRESSION SPRING APPARATUS

摘要

PURPOSE: A method for operating a two-way compression spring is provided to perform a buffer action against a vertical impact with one spring and easily assembling and disassembling by forming a screw thread. CONSTITUTION: An engine system determines an operating direction of an engine. When the engine operates in a stop direction, a main shaft(110) and a shaft(120) becomes widened so that a spring is compressed. When the engine operates a load-up direction, the main shaft lifts a shaft guide, first and second nuts(140,150), and a connection guide, thereby compressing the spring. Screw threads are formed in the shaft guide and a tube for assembling or disassembling the same.