Head vegetable harvester

The utility model provides a head vegetable harvester and belongs to agricultural machines. A lifting belt, a clamping conveying chain belt frame and adjustable spring pull seats are arranged on a harvesting table rack. A driving shaft and a driven shaft are assembled on the clamping conveying chain belt frame through upper bearing seats and lower bearing seats respectively. Driving chain wheels and a drive chain wheel are fixedly arranged on the driving shaft. Driven chain wheels are fixedly arranged on the driven shaft. The driving chain wheels and the driven chain wheels are sleeved with a grid bar type clamping conveying chain belt assembly. Pin shafts are assembled on the clamping conveying chain belt frame and sleeved with swing rods. A tension wheel assembly is assembled on the swing rods and located on the inner side of the grid bar type clamping conveying chain belt assembly and matched with a chain belt of the lower side of the grid bar type clamping conveying chain belt assembly in a contact mode. Tension springs are connected with the tension wheel assembly and the adjustable spring pull seats. The head vegetable harvester is novel and reasonable in structure, reliable in operation, high in adaptive capacity, small in longitudinal length size and flexible in operation.