Transformer shell

A transformer shell comprises a shell body and a shell cover capable of being installed at the open end of the shell body, an annular groove is formed in the peripheral side of the open end of the shell body, a plurality of penetrating holes are formed in the upper wall of the annular groove, bolt columns in one-to-one correspondence with the penetrating holes are arranged on the lower wall of the annular groove, threaded sleeves are arranged on the bolt columns in a screwed mode, and connecting bolts in one-to-one correspondence with the penetrating holes are arranged on the shell cover. The column bodies of the connecting bolts can penetrate through the penetrating holes to be connected with the corresponding threaded sleeves in a matched and screwed mode, the threaded sleeves are fixedly sleeved with gear rings, and the multiple gear rings are connected together in series through a gear belt. According to the utility model, the toothed rings are fixedly sleeved on the thread bushings and are in transmissio