Air conditioner compressor crankshaft with high connection strength

The air conditioner compressor crankshaft high in connection strength comprises a crankshaft body used for supporting, a first protection assembly is fixedly arranged at one end of the crankshaft body, and a second protection assembly is fixedly arranged at the other end of the crankshaft body. A balancing weight protection shell is fixedly installed at the position, close to the middle, of the outer end face of the crankshaft body, two sets of fixing shells are arranged at the positions, close to the balancing weight protection shell, of the outer end face of the crankshaft body, and limiting guide grooves are formed in the side end faces of the fixing shells. By arranging the first protection assembly, the balancing weight protection shell, the fixed shell and the second protection assembly, the first protection assembly, the balancing weight protection shell, the fixed shell and the second protection assembly can fully protect the outside of the crankshaft main body, so that the crankshaft main body can ke