Folding type lifting mechanism

The invention relates to a folding type lifting mechanism. In the mechanism, a fixed vertical arm is vertically fixed on a folding arm platform; one end of a first folding arm and one end of a first balance rod are hinged with the upper end of the fixed vertical arm respectively, and the other end of the first folding arm and the other end of the first balance rod are hinged with the lower end of a movable vertical arm respectively; the tail end of a first hydraulic cylinder is hinged on the folding arm platform; a piston rod end of the first hydraulic cylinder is hinged on the first folding arm; one end of a second folding arm and one end of a second balance rod are hinged with the upper end of the movable vertical arm respectively, and the other end of the second folding arm and the other end of the second balance rod are hinged on a support respectively; the tail end of a second hydraulic cylinder is hinged at the lower end of the movable vertical arm; and the piston rod end of the second hydraulic cylinder is hinged with the second folding arm. The mechanism has an ingenious and novel structure, can operate on occasions of narrow channels, high building walls and small spaces, does not need large working spaces when stretched, can bridge high walls and flower shelf beams for operation after being stretched and is suitable for buildings in various forms.