Oil sucking device and engine

The invention relates to the technical field of engines, and specifically discloses an oil sucking device and an engine. The oil sucking device comprises an oil bottom shell, an oil sucking assembly and a gravity center regulating assembly, wherein one end of the oil sucking assembly is rotatably connected to the oil bottom shell for supplying oil to an oil pump, the other end of the oil sucking assembly is equipped with an oil sucking nozzle; the oil sucking assembly extends in a first direction, and the first direction is parallel to the bottom plate of the oil bottom shell; the gravity center regulating assembly comprises a barrel body arranged on the oil sucking assembly and a counter weight part arranged in the cavity inside the barrel body; the cavity extends in a second direction which is parallel to the bottom plate, and an included angle between the first direction and the second direction ranges from 0 degree to 90 degrees; under action of gravity, the counter weight part follows up in the cavity, s