| 摘要 |
<p>PURPOSE:To shorten traffic blockage time by hooking ropes independently to poles at the opposite ends of a road through a rope throwing gun, then jointing the ropes and pulling the jointed rope. CONSTITUTION:A gun head 8 fixed with a thin rope at a rope hole 18 is inserted reversely into a ball guide A9 at a muzzle with the muzzle directing upward, then the breechblock 5 is pushed down. Consequently, the front section of the breechblock is secured by a pawl 7 and the trigger valve 10 at the rear section of the breechblock contacts tightly with a trigger nozzle 11 while a spring functions to block compressed air in an air-pressure chamber 1. Air is injected through an air insertion port 4 and pressure level is confirmed through a pressure gauge 3. When the gun is triggered, the pawl 7 is removed from the breechblock 5 to advance the breechblock 5 and the warhead 8 integrally through the compressed air injected through an injection nozzle 11, then the breechblock 5 stops at the position of the ball guide A9 and only the warhead 8 fixed with the rope is thrown to the sky.</p> |
