Prestressed member tensioning tool with compact structure

The invention discloses a prestressed component tensioning tool with a compact structure, a prestressed component comprises a prestressed tendon, a locking piece and a supporting seat, the locking piece and the supporting seat are arranged on the prestressed tendon in a penetrating and sleeving mode, the tensioning tool is characterized by comprising a hydraulic cylinder with a center hole, a hollow bottom shell, a connecting piece and a locking sleeve, and the hydraulic cylinder comprises a cylinder body and a piston; the piston has an initial position for retracting into the cylinder body and a tensioning position for extending out of the cylinder body; the bottom of the bottom shell is provided with through holes for the prestressed tendons and the locking pieces to pass through, and the top is connected with the cylinder body, so that an internal cavity is communicated with the central hole; the first end of the connecting piece penetrates into the center hole and is used for being connected with the pres