Height-adjustable conveyor

The utility model belongs to the technical field of conveyor equipment, and particularly relates to a height-adjustable conveyor which comprises a base and a second rotating rod. The top of the base is fixedly connected with a pair of symmetrically-distributed fixing blocks. A first rotating rod is rotationally connected between the adjacent side walls of the pair of fixing blocks. The first rotating rod and the second rotating rod are in mutual transmission through a belt; the two ends of the second rotating rod are rotationally connected with connecting plates; the adjacent side walls of the pair of connecting plates are rotationally connected to the side wall of the fixing block through a rotating shaft. A T-shaped groove is formed in the bottom of the connecting plate; the groove wall of the T-shaped groove is in sliding connection with a T-shaped block; the bottom of the T-shaped block is fixedly connected with a bearing block; a clamping rod is hinged to the bottom of the bearing block; a pair of first