The invention provides a tension self-adjusting type combined joint for a full-tension crossed cable truss structure, and belongs to the field of large-span space structure design. An
upper joint body is composed of a main cable groove, an auxiliary cable groove, a rubber block, a base, a cover plate and a nut A; a lower joint body is composed of an upper cable groove, a lower cable groove, a
gasket, a rubber layer, a belleville spring, an anchor plate, an anchoring clamp and a nut B; crossed horizontal inhaul cables can penetrate through the
upper joint body and the lower joint body, the main cable groove and the auxiliary cable groove can rotate relatively, the upper cable groove and the lower cable groove can rotate relatively, and the crossed angle of the inhaul cables is adjusted; the upper end of a vertical inhaul cable is fixed to a lug plate of the base of the
upper joint body, and the lower end of the vertical inhaul cable penetrates through all the components of the lower joint body and is anchored through the anchoring clamp at the bottom of the anchor plate; and the belleville spring is installed on the lower joint body, the pressure borne by the belleville spring is kept the same as the tension of the vertical inhaul cable all the time, and the cable force in the vertical inhaul cable can be automatically adjusted. The combined joint is simple in structure, easy to assemble, capable of automatically adjusting the cable force of the vertical inhaul cable, convenient to construct and install, high in construction safety degree and low in construction cost.