Encoder gear box

The utility model discloses an encoder gear box, including the box, the box includes the gear train, and the box is cylindrical, and one end is uncovered, and it is fixed with the case lid that the opening end passes through positioning bolt, the fixed support that is equipped with the cylinder on the bottom surface of box, support are kept away from the one end of box and are outwards extended the formation outer lane along its outer periphery, and the equipartition is equipped with the screw on the outer lane, the lateral surface of case lid is equipped with a plurality of flange of being connected with the encoder of being used for, and flange's axis is located same circumference, and it is fixed with the case lid that each flange passes through regular triangle's base. The utility model discloses, the installation rate is fast, compact structure, and size precision is high, connects reliably, and it is convenient to maintain.