Garbage collecting device for building demolition

The invention discloses a garbage collecting device for building demolition, belongs to the technical field of collecting devices, and aims to solve the problems that at present, most demolited building garbage is placed in garbage woven bags by building workers, and bagging operation needs to be performed by two persons at the same time, so that the bagging operation of the building garbage is relatively inconvenient. A discharging groove is formed in the surface of the movable bottom plate, a collecting barrel is arranged on one face of the movable bottom plate, a feeding hopper is fixedly installed at the upper end of the collecting barrel, an arc-shaped groove is formed in the surface of the collecting barrel, an auxiliary collecting mechanism is arranged on one face of the movable bottom plate, and a crushing mechanism is arranged in the collecting barrel. A first guide block is driven to slide, the first guide block drives a toothed plate to move, the toothed plate enables a first transmission gear to r