Tool for detecting the axial distance between two tapered roller bearings

The invention relates to a tool for detecting the axial distance between two tapered roller bearings, being easy to detect. A positioning boss is arranged in a positioning piece; the positioning boss extends inwards in the radial direction and the axial length of the positioning boss is corresponding to the reasonable axial distance between the inner rings of left and right tapered roller bearings; the left side of a connection body of the main body of the tool is provided with an annular spacing boss which extends outwards in the radial direction; a sleeve slidingly sleeves the connection body of the main body in the axial direction; four elastic pieces are arranged in the radial direction at intervals along the circumferential direction of the sleeve; the right end of each elastic piece extends from the right end surface of the sleeve, and can enter into the sleeve by means of pushing of the external force and can change the axial length of the right end surface extending out from the sleeve, and then is still fixed on the sleeve; the sum of the axial length of the sleeve and the length of elastic piece extending out from the right end surface is corresponding to the axial length of the positioning boss on the positioning piece; and a mobile piece can drive a gland to move axially and to connect with the cover body of the gland and the connection body of the main body of the tool.