Abstract: A working machine lifting device of a tractor, comprising externally installed hydraulic lift cylinders disposed on the right and left sides of a transmission casing, lift arms rotated by the operation of the cylinders, and lower links vertically rotated by the rotation of the lift arms and connected to a working machine, wherein the cylinder and the lower link are rotatably supported on a same pin supported by the transmission casing and a sway chain bracket, and the support point of the cylinder and the vertical rotating pivot of the lower link are positioned on the axis of the pin.

Abstract: A working machine lifting device (1) of a tractor (100), comprising externally installed hydraulic lift cylinders (2, 2) disposed on the right and left sides of a transmission casing (4), lift arms (5, 5) rotated by the operation of the cylinders, and lower links (13) vertically rotated by the rotation of the lift arms and connected to a working machine (120), wherein the cylinder (2) and the lower link (13) are rotatably supported on a same pin (8) supported by the transmission casing (4) and a sway chain bracket (11), and the support point of the cylinder (2) and the vertical rotating pivot of the lower link (13) are positioned on the axis of the pin (8).