Installation structure of oil tank cover and engineering machinery

The utility model discloses an installation structure of an oil tank cover and engineering machinery. The oil tank cover is installed on a walking table board (10) allowing a person to walk, the walking table board is provided with an opening (11), the oil tank cover comprises an oil tank cover board (20) used for sealing the opening, the first end of the oil tank cover board is provided with an opening and closing piece (21) locked on the walking table board in a released mode, the installation structure of the oil tank cover further comprises a first pad board (12) and a second pad board (22), the first pad board is fixed to the lower surface of the walking table board and extends to the oil tank cover board so that the second end, opposite to the first end, of the oil tank cover board can be supported through an exposed supporting portion (13), the second pad board is fixed to the lower surface of the second end of the oil tank cover board and extends to the walking table board so that the second pad board