Positioning bolt of gear shifting mechanism

The positioning bolt of the gear shifting mechanism comprises a fixing seat, a bolt body and a first spring, the bolt body is arranged on the fixing seat in a sliding mode, and the bolt body comprises an assembling section and an inserting section; the first spring is arranged between the assembling section and the fixed seat; a positioning head and a positioning ring are further included, the positioning head is arranged on the inserting section, the side edge of the positioning head is an inclined plane, and the end of the positioning head is located below the inserting section; the positioning ring is arranged on the positioning head in a sliding mode and can slide in the direction close to or away from the end of the positioning head. When the positioning piece is adjusted to move, each time the positioning head moves to the positioning hole, the positioning head can be inserted into the positioning hole under the elastic force action of the first spring, the moving position of the positioning piece is si