Self-lifting type box closing all-welding workstation

The invention discloses a self-lifting type compartment body box closing all-welding workstation which comprises a child-mother vehicle system, an aerial three-rail robot welding mechanism, a head-tail movable type welding positioner, a welding clamp, a lifting type auxiliary ladder truck and a control system, and the welding clamp is fixedly installed on the head-tail movable type welding positioner; the welding clamp comprises a pressing mechanism and an inner supporting mechanism, and the control system is electrically connected with the child-mother vehicle system, the aerial three-rail robot welding mechanism, the head-tail moving type welding positioner and the welding clamp. A product is lifted to the welding clamp through the automatic lifting function of the sub-trolley, the product is welded through the aerial three-rail robot welding mechanism after the product is clamped and fixed through the welding clamp, automatic feeding, automatic clamping and automatic welding of the product can be achieved,