Coupling for European style crane

The utility model discloses a coupler for European style crane, which comprises a shaft disc and shaft sleeves arranged at the two ends of the shaft disc, first flange plates are arranged at the two ends of the shaft disc, second flange plates are arranged at the ends, close to the shaft disc, of the two shaft sleeves, and threaded holes are formed in the first flange plates and the second flange plates. The first flange plate and the second flange plate are connected through a bolt, and the end, away from the shaft disc, of the shaft sleeve is connected with an extension sleeve through an adjusting rod. The adjusting rod comprises a plurality of fixing cylinders arranged at the end, away from the second flange plate, of the shaft sleeve, extension rods are arranged in the ends, away from the shaft sleeve, of the fixing cylinders in a sliding mode, and one ends of the extension rods extend out of the fixing cylinders and are connected with extension sleeves. Different shaft sleeves can be conveniently replace