Portable weeding device for substrate cultivation

The utility model belongs to the technical field of agricultural weeding tools, and particularly relates to a portable weeding device for substrate cultivation. Wherein the upper arm rod is sleeved in the lower arm rod, the outer part of the upper end of the upper arm rod is sequentially sleeved with the grip and the brake handle upright post, the brake handle is fixed on the brake handle upright post, the brake handle is connected to the brake handle through a rotating shaft, the top of the brake handle is provided with a tail wire fixing rivet, a grip end rivet is arranged in the grip, and a bucket end rivet is arranged in the lower arm rod; the bucket mechanism is connected to the bottom of the lower arm rod through a connecting piece, and a spring is arranged in the bucket mechanism. The brake cable is fixed on the tail cable fixing rivet, then penetrates into the grip around the rotating shaft, bypasses the top of the grip end rivet, penetrates through the brake handle stand column, the upper arm rod and