| 摘要 |
<p>A shock absorbing apparatus of tunnel inner-wall for a vehicle is provided to prevent the vehicle from secondly crashing by effectively absorbing shock generated in crash and gently decreasing elastic force resulted from the crash. A shock absorbing apparatus of tunnel inner-wall for a vehicle(1) comprises a post formed with plural cylindrical base plates with different diameter at the lower part, and inserted in the side surface of the tunnel inner wall; a central post(20) formed like a cylinder in which the post is rotatably inserted from the lower part to the upper part, and provided with a cylindrical saw tooth frame(21) installed at the center of the upper part, a supporting plate body shaped like a reversed T and mounted around the outer periphery, spring holes installed at upper, middle, and lower parts of both sides, and a hook hole combined to other end of a hook frame and installed between upper and lower sides; an elastic hooking device(30) provided with a spring hole fixing a shock absorbing spring(31) elastically fixed to the spring hole, a hooking insertion groove in which a hook of which front end is folded on the extension line of the hooking hole, and a recessed hooking unit mounted at right and left sides of the inside; a semicircular frame(40) made of a semicircular steel sheet, and provided with an outside surface coated with rubber, and a hooking fixing unit fixed by being inserted in the recessed hooking; and a reverse rotation belt(50) rotating another cylindrical saw tooth frame neighboring the cylindrical saw tooth frame at one side in opposite direction to the rotation direction of the cylindrical saw tooth frame at one side by twisting once and connecting the cylindrical saw tooth frame and another neighboring cylindrical saw tooth frame.</p> |
