RU2037040C1 - Arch truss - Google Patents

Abstract

FIELD: construction. SUBSTANCE: arch truss has chords connected by bracing lattice. Chords are made from strip bars having width of 90-110 mm and thickness of 6-10 mm. Bracing lattice has bracing bars and angular posts welded on shaped members along longitudinal axial plane to chords. Poles are welded on shaped members in pairs at both sides and bars are welded in succession at one and other sides of shaped members. EFFECT: simplified construction, reduced metal usage reduced labor requirements for manufacturing of arch truss. 3 dwg

Description

 The proposed technical solution relates to construction, namely to arched trusses used as load-bearing structures of lightweight ceilings.

 Known arches of cross-section, including belts connected to the outside by spacers. Belts are made of a channel channel. The disadvantage of this design is the significant complexity of bending belts.

 Arched trusses are known, including belts connected by a triangular lattice consisting of struts and braces. The lower and upper belts are made of a box-section profile.

 The disadvantage of an arch truss is the significant metal consumption of the structure and the great complexity of manufacturing an arcuate belt from a box-section profile, the bending of which is carried out on special rolling equipment, and the bending of such rigid elements with an accuracy to a given radius is achieved by adjusting the radius obtained using a template.

 The purpose of the invention is to simplify the design, reduce its metal consumption and reduce the complexity of its manufacture.

 Figure 1 shows the proposed arched farm, General view; figure 2 fragment of the arch; figure 3 section BB in figure 2, a fragment of an arch truss.

 The arched truss consists of upper 1 and lower 2 belts and a diagonal lattice. Belts are made of rolled strip with a thickness of 6-10 mm and a width of 90-110 mm. Along the longitudinal axial plane, gusses 3, 4 are welded to the belts.

The diagonal lattice includes racks 5 and diagonal rods 6 from the corner welded to the gussets. Racks are coupled (welded) on both sides of the gussets. The rods are connected to the luminaire at an angle ^of 35-60 alternately on either side of the latter.

 Arched farm is made as follows.

 Strips of mild steel with a thickness of 6-10 mm and a width of 90-110 mm, selected from the calculation of the rational use of metal and ensuring rigidity and strength of the structure, are bent freely along the contour of the required radius manually. In the course of bending, the strips are fixed with the help of forks of the fork type to the guide rails, which simultaneously serve as a template for a given bending radius of the upper and lower truss belts. Then, gussets, racks and diagonal rods are sequentially welded to the belts installed on the conductor. An arch truss assembled in this way from simple elements has sufficient rigidity and assembly accuracy at a lower metal consumption (compared to analogues).

 The proposed design has advantages over known analogues in the technology of manufacturing farms, as well as in the subsequent installation of any lightweight coating in view of the simplicity, reliability of fastening of the coating elements to the truss belts.

Claims (1)

 ARCH FARM, consisting of belts and a diagonal lattice formed by braces from a corner and uprights, characterized in that the upper and lower truss belts are made of rolled strip with a thickness of 6-10 mm and a width of 90-110 mm.