Method for designing universal shovel mechanism of bulldozer

The invention belongs to the field of scraper knives, and discloses a method for designing a universal shovel mechanism of a bulldozer. The method comprises the steps that the initial positions of various hinged points of the universal shovel mechanism are determined, and a three-dimensional dynamical model of the universal shovel mechanism is initially set up according to the initial positions ofthe hinged points; the penetrating angle of a scraper knife is adjusted through an adjustable screw, and the initial position and stroke of the adjustable screw and the positions of the hinged pointsA and B are determined, wherein the initial position and stroke of the adjustable screw and the positions of the hinged points A and B meet the process requirements; the scraper knife is driven by anoblique oil cylinder to move obliquely, and the initial position and stroke of the oblique oil cylinder and the positions of the hinged points C and D are determined, wherein the initial position andstroke of the oblique oil c