The utility model discloses an axle and dismounting device of connector belongs to overhaul of the equipments machinery, solves prior art and is difficult to the axis body that shaft coupling, axle sleeve, impeller isotructure were dismantled in the separation, causes shaft distortion and other structural damage scheduling problems easily. The device including the arm -tie and with the several pull rod that the arm -tie is connected, be equipped with the ejector pin on the arm -tie, be equipped with the several hole on the arm -tie, the pull rod is full thread screw rod or both ends helicoid screw rod, the one end of pull rod is equipped with matched nut and is connected with the arm -tie and fixes arm -tie and ejector pin mutually perpendicular. The utility model discloses pull rod one end is connected with the arm -tie, and the other end is connected with the screw or the redrilling of need dismantling the structure, draws off the connector through adjusting pull rod, realizes the normal dismantlement of axle and connector, can not cause the damage to connector itself, does not receive long -time use, corruption and the space of connector device, the influence that the appearancerestriction caused, the simple easy operation of device, effective improve equipment life -span, reduction equipment investment and running cost.