Large-span roof steel truss structure: Fid-Bau Portal

Large-span roof steel truss structure

CAO YANBING

The invention relates to the technical field of steel trusses, and discloses a large-span roof steel truss structure which comprises two concentric-square-shaped trusses, two mounting supports and two winches, the two concentric-square-shaped trusses are connected, the upper ends of the mounting supports are fixedly connected with a mounting plate, a U-shaped rail is mounted on the mounting plate, and the U-shaped rail is fixedly connected with the mounting supports. The concentric-square-shaped truss is connected with concentric-square-shaped truss supporting feet, and the lower ends of the concentric-square-shaped truss supporting feet are connected with the U-shaped rails through rolling supporting devices. The rolling supporting device is arranged on a U-shaped plate in a U-shaped rail, a rolling wheel is rotationally connected between the two sides of the inner wall of the U-shaped plate through a rotating shaft, the surface of the rolling wheel is in rolling connection with the inner bottom wall of the U-shaped rail, the outer top of the U-shaped plate is fixedly connected with an oil storage tank containing lubricating oil, and the concentric-square-shaped truss supporting foot is fixedly connected to the outer top of the oil storage tank. According to the structure of the large-span roof steel truss, the problems that oiling cannot be completed in time at present, manual oiling is needed every time oiling is conducted, and the efficiency is low can be solved.

本发明涉及钢桁架技术领域，且公开了一种大跨度屋面钢桁架的结构，包括回形桁架、安装支架和卷扬机，回形桁架、安装支架和卷扬机均设置有两个，两个回形桁架相连接，安装支架的上端固定连接有安装板，安装板上安装有U型轨道，回形桁架上连接有回形桁架支脚，回形桁架支脚的下端通过滚动支撑装置与U型轨道相连接；滚动支撑装置设置在U型轨道内的U型板，U型板内壁的两侧之间通过转轴转动连接有滚轮，滚轮的表面与U型轨道的内底壁滚动连接，U型板的外顶部固定连接有装有润滑油的储油箱，回形桁架支脚固定连接在储油箱的外箱顶。该大跨度屋面钢桁架的结构，能够解决目前不能及时的完成加油，每次加油时都得人工加油，效率低下的问题。

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