Bolt positioner

The utility model provides a bolt positioner, whole mechanism installs on the automobile body includes the driving cylinder, the linking arm is installed to driving cylinder piston tip and the linking arm is coaxial with the driving cylinder piston, the articulated transition connecting rod one end of linking arm, and swinging arms one end is connected to the transition connecting rod other end, and the swinging arms other end is articulated with the bolt, and the bolt cooperation is installed in the automobile body to it is coaxial with the mounting hole on the automobile body, and the bolt is cylindrical, and install the lubricated copper sheathing of direction between the automobile body mounting hole, and the copper sheathing adopts self -lubricating material, during operation, dolly need move the front wheel driving jar and be in and to stretch out the state, on the roll table processing have with bolt matched's hole, it is downthehole that the bolt inserts the roll table, the dolly location was at the fixed position of roll table this moment, the driving cylinder withdrawal drives the bolt and withdraws, and the bolt is located inside the automobile body completely, the utility model discloses bolt positioning mechanism simple structure, maintenance facility, whole equipment technology's automation is realized to the correct location of having guaranteed the operation dolly.