Hydraulic cylinder welding device convenient to mount and dismount

The utility model belongs to the technical field of hydraulic cylinder welding. The hydraulic cylinder welding device comprises a base, a plurality of mounting grooves are formed in the top of the base in a rectangular structure, a mounting plate is arranged on the inner walls of the mounting grooves, a plurality of clamping grooves are linearly formed in the inclined face of the top of the mounting plate at equal intervals in an opening and closing mode, and a sliding rod is fixedly arranged on the inner wall of the mounting plate. A first spring sleeves the circumferential outer wall of the sliding rod, a sliding block is slidably connected to the circumferential outer wall of the sliding rod, two rotating shafts are fixedly arranged on the two sides of the sliding block in a symmetrical structure correspondingly, torsional springs sleeve the circumferential outer walls of the rotating shafts, a clamping sleeve is fixedly arranged at the end, close to the inner side, of the mounting plate, and two sets of s