Dismounting and mounting device for hydraulic coupler of coupler

The utility model discloses a hydraulic coupler dismounting and mounting device which comprises a base, a plurality of rectangular holes are formed in the middle of the base so that first connecting pieces can penetrate through the rectangular holes to fix a jack, and a plurality of round holes are further formed in the base so that second connecting pieces can penetrate through the round holes to be connected with a U-shaped clamping plate. The U-shaped clamping plate is clamped at the front ends of the coupler and the hydraulic coupler and is used for drawing; puller upper supporting legs are arranged at the bottom of the base and the bottom of the U-shaped clamping plate, and the puller upper supporting legs are connected with puller lower supporting legs through locking pieces and used for being connected with a puller; according to the device, three claws of a puller are changed into a U-shaped clamping plate, and the U-shaped clamping plate is connected with a supporting seat of a hydraulic jack through