Our factory used to hoist the container method: every time it is hoisted, the operator needs to climb the box twice, that is, install and remove the hook. Because the 10t box needs four-corner balanced lifting, it is very unsafe to stand and walk when people install and remove the hook on the top of the box. To this end, I explored from practice to locate the 63mm × 124mm elliptical hole on each corner of the top of the container, the center of the four corners is 2810mm × 2360mm. The semi-automatic lifting frame for 10t box was designed with the hole of 63mm×73mm long round hole on the side of the corner piece. It is safe and reliable to use, and can improve work efficiency by more than 5 times.
DIN 6926 Nylon Insert Hexagon Flange Lock Nut
Chuangtuo Jinggong (Jiangsu) Co., LTD , https://www.chtofastener.com