Can pull platform trailer's preceding drive mechanism by oneself

The utility model relates to a can pull platform trailer's preceding drive mechanism by oneself. It includes micro -gap switch, two fixed pins, draw the rod cover, lead guide rod, journal stirrup, connecting rod and spring, and it has two pinholes to draw to bore on the sleeve pipe of rod cover, and the front end design has the tow lug, lead before the guide rod tip inject draw the rod cover in, it has a micro -gap switch to lead guide rod top position, micro -gap switch's contact switch head is stretched in the traction lever ways intraductally, leads the guide rod rear end and passes through the journal stirrup and connect the connecting rod, the connecting rod other end is connected on steering axle, spring suit is on leading guide rod, the guide rod 1 rear end is being drawn on spring front end top, spring rear end top is on leading the boss that designs the guide rod rear end. The advantage is that the design is simple, convenient to use, the spring can play the cushioning effect, the brake of touching this car of micro -gap switch when the traction lever will be moved and begun the brake, reset under the spring action, then the brake loosen walking safety.