The present invention relates to a grass cutter lifting structure. The present invention is characterized in that the spline shaft 10 provided in the grass head end head 100 has a spline groove 22 which has a seat projection 21 and is fitted in the spline shaft 10 in the center hole inner diameter A cutter 30 in which a hole 31 is formed so as to be fitted into a fitting projection 21 of the seat ring 20 and a cutter 30 which is fitted to the spline shaft 10 after the cutter 30 is fitted, A spacer 40 having a spline groove 41 at its center and a nut 60 seated on the spacer 40 and fitted on the end of the spline shaft 10 And a nut housing (50) in which a groove (52) is formed so as to be securely fastened and fixed to the base (11) One or more engaging protrusions 23 are formed on the outer circumferential surface of the seating protrusion 21 on which the cutter 30 formed on the seating ring 20 is seated and another engaging protrusion 23 is formed on the seating protrusion 42 of the spacer 40 One or more engaging protrusions 43 are formed on the outer circumferential surface so that the engaging protrusions 23 and 43 can be further mounted on the inner circumferential surface of the cutter 30 and 30 ' And a groove 32 is formed so as to be assembled. The present invention is configured such that when the cutter 30 or 30 'is rotated at a high speed during the weeding operation, a space 55 for inducing a vortex is formed between the cutter 30 and the cutter 30' As the lawn mower cutter 30 (30 ') rotates at a high speed, the air is rapidly passed through the space 60 that induces the vortex, resulting in a very strong vortex. As a result, the lawn mower floats on the ground during operation, Even if the herbicide works, the heavy feeling and the weight feeling of the grass cutter are not greatly felt, and the fatigue feeling is much less.본 고안은 예초기 커터 부양구조에 관한 것이다.구성의 특징으로는 예초기 자루 끝 헤드(100)에 구비된 스플라인축(10)에 안착돌부(21)를 가짐과 동시에 중앙부 구멍 내경에 상기 스플라인축(10)에 끼워지는 스플라인홈(22)을 구비하여
