Difference in height detects and coding mechanism

The utility model provides a difference in height detects and coding mechanism, concretely relates to mechanical automation device field, including the casing, go up the pressure head, down the pressure head, go up frock, frock, a plurality of unsteady connector and base plate down, the inside vertical orientation of casing is equipped with the pressure head dead lever, go up pressure head dead lever one end and meet with the casing, go up the pressure head dead lever other end and meet with last pressure head one end, go up the pressure head other end and be equipped with the frock, lie in the inside frock of having arranged down of casing under the lower frock, the lower extreme of lower frock is equipped with down the pressure head, and the lower extreme of lower pressure head is equipped with down the pressure head dead lever, and lower pressure head dead lever runs through the casing, and the lower extreme of lower pressure head is equipped with the lift cylinder, and the lift cylinder is located on the