Integrated axle case, drive axle and loader

The utility model provides an integrated axle case, a drive axle and a loader. The integrated axle case comprises a case body and a cavity defined by the case body, wherein the case body is an integrated case; the middle part of the case body is a main case; the both ends of the main case respectively extend towards the both sides to form a transition case. The utility model provides the drive axle. The drive axle which comprises the integrated axle case. The utility model provides the loader. The loader which comprises the drive axle. The integrated axle case provided by the utility model is formed in an integrated casting manner, so that the influence on assembly tolerance, which is caused by connection, can be avoided; the integrated axle case has the advantages of easiness of tolerance control, better consistency and better integrity. Compared with the a subsection type axle case, the connection of internal parts can be reliable, and the occurrence of oil leakage on the connection positions can be avoided