，摩擦系數(shù)；嗗冧\防跳花輪，不需要在帶輪束焊接安裝，如果焊接，修理后，調整非常不方便。當繁榮起來，下降到一個位置，ABS抱死系統(tǒng)立即斷火緊鎖馬達，這樣確保吊桿停至此位置下滑系數(shù)最小，安全性達到最高。
Landing stage using worm gear system, made of bronze, friction coefficient, high transmission efficiency. Anti-hoisting protection, upper and lower protection. Pulley galvanized anti-skip Hanawa,no need to install a pulley beam welding, if welding, repair, adjustment is very inconvenient. When flourished down to one location, ABS locking system immediately locked the motor off the fire,so make sure to stop boom coefficient smallest decline this position, the highest security.