Angle-adjustable double-column lifting machine

The utility model discloses a double-column lifting machine with an adjustable angle. The device comprises two stand columns, fixing plates are fixedly connected to the bottoms of the opposite sides of the two stand columns, a first cross beam and a second cross beam are fixedly connected to the tops of the two fixing plates correspondingly, an inner cavity of the second cross beam is sleeved withthe first cross beam, and a limiting box is fixedly connected to the left side of the bottom of the second cross beam. Two sections of supporting arms, tray glue, a supporting arm shaft, a baffle, arope wheel, a power assembly, a stand column, an oil cylinder, a sliding frame, a fixing plate, a rope wheel shaft, an ejector rod, a first cross beam, a second cross beam, a limiting box, a supporting arm limiting part, a sliding block, a three-section supporting arm, an anti-collision rubber block, a protective cover and a single-side unlocking assembly are used in cooperation. The angle can beadjusted during use, the st