為wei了le解jie決jue上shang述shu問wen題ti，在zai輸shu送song線xian的de中zhong間jian專zhuan門men設she計ji了le一yi係xi列lie的de阻zu擋dang機ji構gou
，使shi工gong裝zhuang板ban在zai需xu要yao進jin行xing工gong序xu操cao作zuo的de位wei置zhi上shang停ting止zhi前qian進jin，這zhe種zhong阻zu擋dang機ji構gou稱cheng為wei止zhi動dong機ji構gou。一yi般ban是shi專zhuan門men的de氣qi缸gang，稱cheng為wei止zhi動dong氣qi缸gang。如ru圖tu所suo示shi為wei工gong程cheng上shang常chang用yong的de止zhi動dong氣qi缸gang。