The utility model relates to a protection device of a mower. The protection device is mainly provided with a protection part which is provided with an inner frame. The inner frame is assembled at the outer end of a gearbox of the shoulder carrying mower, an outer frame is externally arranged corresponding to the inner frame, the distance between the inner frame and the outer frame is larger than the length of a cutting piece of the shoulder carrying mower, and a supporting part is connected between the inner frame and the outer frame. Thus, the cutting piece can be prevented from touching and cutting trees or other hard objects, the tree can be protected and be prevented from dying of damage, meanwhile, the cutting piece can be protected and be prevented from being damaged, and practical convenience is better improved when the protection device is integrally implemented and used.本創作係有關於一種割草機防護裝置,該防護裝置設有內框架,令該內框架組設於背負式割草機之齒輪箱外端,對應該內框架外設有外框架,該內框架與外框架間的距離大於該背負式割草機之切割件的長度,再於該內框架與外框架間連結設有支撐件;藉此,以能防止該切割件與樹木或其他硬物碰觸切削,不僅能對樹木具有保護作用、防止樹木遭到損傷死亡,且同時亦能對該切割件具有保護功效、避免切割件損壞,而能在其整體施行使用上更增實用便利性者。(1)‧‧‧背負式割草機(11)‧‧‧齒輪箱(2)‧‧‧防護裝置(21)‧‧‧內框架(211)‧‧‧組接部(212)‧‧‧定位件(22)‧‧‧外框架(23)‧‧‧支撐件(24)‧‧‧固定座
