Chassis oil tank of diesel generating set and diesel generating set

The utility model relates to a diesel generating set chassis oil tank and a diesel generating set, the diesel generating set chassis oil tank comprises a shell, an oil tank tray and an oil tank body, the shell comprises a first metal plate layer; the oil tank tray is arranged on the shell and comprises a second metal plate layer; the oil tank body is installed on the oil tank tray and comprises a third metal plate layer, and the first metal plate layer, the second metal plate layer and the third metal plate layer are sequentially arranged from outside to inside. Different from the prior art, the oil tank body is of an independent structure which is independently welded, is arranged on the oil tank tray and is finally arranged on the chassis, the shell, the oil tank tray and the oil tank body are respectively provided with three layers of metal plates, the oil tank body has three layers of protection, and if the outermost two layers are damaged, diesel oil cannot leak out. The firmness of the oil tank body can