Land leveler sliding slewing bearing structure

The invention discloses a land leveler sliding slewing bearing structure, and belongs to the field of engineering mechanical drive axles. The land leveler sliding slewing bearing structure comprises aplanetary speed reducing shell and a bearing seat. A composite gasket A, a composite bush and a composite gasket B are sequentially assembled on the outer circle of the end of the right side of the planetary speed reducing shell. A pressing plate is fixed to the end face of the right side of the planetary speed reducing shell. The inner circle of the composite bush is in clearance fit with the outer circle of the planetary speed reducing shell. Gaps are designed between the inner circles of the composite gaskets and the outer circle of the planetary speed reducing shell. The inner circle of the bearing seat is in interference fit with the outer circle of the composite bush. Gaps are reserved in the contact surfaces of the composite gasket B and the planetary speed reducing shell as well as the composite gasket B