Large reciprocating lawn mower four-wheel tractor with lawn mower forage, rice and wheat stalk multipurpose mower rear suspension orchard reciprocating mower 9GB-1.4/1.6/1.8/2.1 rear suspension reciprocating mower supporting 12- Used by a 22-horsepower four-wheel tractor. The machine uses an offset crank-connecting rod mechanism to drive the cutting knife to operate. It is suitable for flat grasslands in agriculture, forestry and pastoral areas and grasslands with different conditions such as slopes and hills. It is used for harvesting and planting natural grass. Pasture, alfalfa, reed, green fodder, etc. The tractor power output shaft drives the cutting movement of the cutter, the three-point suspension mechanism controls the up and down of the implement, and the tractor power output mechanism (operating the tractor clutch) is manipulated to realize the movement or stop of the cutter.