Coping and replacing device of electrode cap

The invention provides a coping and replacing device of an electrode cap. The device comprises a dismounting device; the dismounting device comprises a dismounting hole for containing the electrode cap, and a clamping mechanism for clamping a motor cap; the dismounting hole is positioned in the center of a dismounting gear; the clamping mechanism comprises a linear driving device, a damping mechanism and a clamping claw mechanism, wherein the damping mechanism is driven through the linear driving device; the clamping claw mechanism comprises a rotating shaft, clamping claws, an upper cover and a lower cover; a rotating shaft is fixed between the upper cover and the lower cover; the clamping claws, which are as much as limiting strips, sleeve the rotating shaft; each clamping claw comprises a center near end which is closer to the center of a circle of the dismounting gear, and a center far end which is far from the center of the circle of the dismounting gear; the center near ends of the clamping claws are positioned in clearances of the limiting strips, and while the center far ends of the clamping claws are in clearance fit with the clearances of the limiting strips; when braking, the damping mechanism is contacted and rubbed with the upper cover to enable the upper cover to be decelerated opposite to the dismounting gear, and as a result, the center near ends of the clamping claws extend into the dismounting hole and tightly clamp the electrode cap.