Jig frame for assembling pipe truss

The utility model provides a jig frame for assembling a pipe truss, which comprises a plurality of supporting devices which are arranged in an array, the supporting device comprises a left supporting assembly and a right supporting assembly, the left supporting assembly comprises a supporting base and a bearing head, the bearing head is arranged on the supporting base in a sliding mode, an arc-shaped groove is formed in the bearing head, and the structure of the right supporting assembly is the same as that of the left supporting assembly and is parallel to that of the left supporting assembly. The welding jig frame further comprises a connecting plate, the two ends of the connecting plate are connected with the two bearing heads respectively, a pushing device is arranged on the connecting plate, and the welding jig frame solves the problems that a traditional welding jig frame is low in positioning precision, complex in installation, low in working efficiency and the like. 本实用新型提供了一种管桁架装配用胎架,包括若干个支撑装置，若干所述支撑