Resistance -increasing formula squeeze [oil] film damper of outer astragal recess and axle journal area boss

The utility model provides a resistance -increasing formula squeeze [oil] film damper of outer astragal recess and axle journal area boss, includes axle journal and outer lane, and the outer lane suit leaves the oil film clearance between the two on the axle journal, and the outer lane middle part is equipped with feed -tank and fuel feeding hole, and the oil film clearance communicates with each other through feed -tank and fuel feeding hole, the axle journal surface is equipped with the boss, is equipped with the recess on the inside wall of outer lane, and boss and recess are just to setting up, the boss width is greater than the recess width, boss and recess quantity are a plurality of, set up along axle journal and outer lane circumference equipartition respectively, boss and recess parallel with the axial direction line of axle journal and outer lane respectively on length direction, boss and recess be axial through on axle journal surface and outer lane inside wall respectively, the boss top surface is