Patent ID: 6520711
Filing Date: 2003-02-18
Classification: E01F

Abstract:
A shock absorption stand for a road, comprising:an upper plate and a lower plate, said plates being symmetrically disposed and having aligned holes; at least one upper cover for covering said upper plate; a plurality of shaft rods having spiral ends, each said shaft mounted between said upper and lower plates in regular intervals with said spiral ends projecting through said aligned holes of said upper and lower plates respectively; a plurality of buffer rollers, each said buffer roller having a shaft rod hole respectively, said buffer rollers being freely rotatably inserted onto at least one of said plurality of shaft rods between said upper and lower plates; at least one spacer having a spacer hole for inserting onto at least one of said plurality of shafts at regular intervals between said buffer rollers; a plurality of nuts for securing said spiral ends of each said plurality of shafts; said shock absorption stand is installed and fixed in an inside of a concrete structure; and anchor bolts buried in the concrete structure and fixed to sides of said upper and lower plates for installing as a guardrail.