Main truss rear fulcrum structure and cantilever bridge fabrication machine

The utility model discloses a main truss rear fulcrum structure which comprises a bearing seat used for applying downward acting force to a rear fulcrum of a main truss, and the bearing seat is arranged on a web plate of a beam body. The utility model further discloses a cantilever bridge fabrication machine which comprises the main truss and the main truss rear fulcrum structure. According to the utility model, the bearing seat is arranged on the web of the beam body, during pouring, the bearing seat exerts downward acting force on the rear fulcrum of the main truss, and the pouring load can be transmitted to the web of the beam body through the bearing seat, so that the wing plate of the beam body is prevented from being crushed, and the structure is simple and effective. 本实用新型公开了一种主桁架后支点结构，包括用于对主桁架的后支点施加向下的作用力的承载座，所述承载座设于梁体腹板上。本实用新型进一步公开了一种悬臂造桥机，包括主桁架，还包括上述的主桁架后支点结构。本实用新型在梁体腹板上设置有承载座，浇筑时，承载座对主桁架的后支点施加向下的作用力，浇筑载荷可以通过承载座传递至梁体腹板，从而避免造成梁体翼板压坏，结构简单、有效。