A vertical hydraulic riveting
machine comprises an engine body, a riveting hydraulic mechanism, a bearing trolley and a
hydraulic pump station, wherein the
hydraulic pump station is connected onto the hydraulic riveting structure arranged on the engine body through a hydraulic pipeline, the riveting mechanism comprises an upper riveting hydraulic mechanism and a lower riveting hydraulic mechanism, the upper riveting hydraulic mechanism comprises an upper oil cylinder, the upper oil cylinder comprises a cylinder body and an upper
piston rod arranged inside the cylinder body, the upper
piston rod is a double shaft extension
piston rod, the upper end of the double shaft extension
piston rod is provided with an anti-rotation board, a trapezoid inner
screw thread through hole is formed in the center of the double shaft extension
piston rod along the length direction, a trapezoid screw rod is in female connection with the trapezoid inner
screw thread through hole, a riveting rod is connected onto one end of the trapezoid screw rod, the lower end of the riveting rod is provided with an upper riveting head, the trapezoid screw rod is provided with a flat key, one end of the flat key is inserted into an inner hole in a speed reducing motor, the lower riveting hydraulic mechanism comprises a lower oil cylinder and a lower
piston rod arranged inside the lower oil cylinder, and a lower riveting head is connected onto the upper end of the lower piston rod. The vertical hydraulic riveting
machine has the characteristics of being high in working efficiency and good in riveting quality.