Draw gear before cargo vehicle

The utility model discloses a draw gear before cargo vehicle, include Y type towing pin, round pin axle, draw key seat, high strength nut, spring plate, screw. The one end of Y type towing pin has two linking arms and is equipped with the through -hole, and other end processing has external screw thread, middle part processing to have and draws key seat installation complex male cone (strobilus masculinus). Sell the through -hole on two linking arms that pass the towing pin to be equipped with the split pin. Drawing the key seat and also having two linking arms, the linking arm has the connecting hole, and the accessible connecting piece is connected with frame ventral surface, and one of them linking arm lateral surface has the side elevation, has the connecting hole on the side elevation, and the accessible connecting piece is connected with the frame airfoil, and other end processing has the interior conical surface, is used for installing the hole of high strength nut. Have the installation opening between linking arm and high strength nut installation hole, have the spring plate mounting groove on the outerplanar of installation opening one side. The fix with screw is in the mounting groove for the spring plate to prevent that spring plate from rotating.