Fixed base for welding electric automobile body framework

The utility model discloses a fixing base for welding an electric automobile body framework. The fixing base comprises a connecting bottom rod, a butt joint rod, an extension rod, an inner rod, a first rolling wheel, a second rolling wheel, a stand column, a first telescopic rod, a fixing cylinder, a hydraulic jack, a connecting sleeve, a second telescopic rod, a bearing rod and a clamping rod. The device has the beneficial effects that the first rolling wheel and the second rolling wheel form an equilateral triangle stable structure, and the universal rotating shafts are arranged between thetop ends of the first rolling wheel and the second rolling wheel and the connecting points of the rod pieces, so that the device can move in any direction, and the moving stability is ensured; the first telescopic rod is telescopically connected with the stand column through vertical telescoping of the hydraulic jack, the length of the first telescopic rod is adjusted through telescoping of the hydraulic jack, then the he