The main beam of the product is a truss girder structure which is welded by a rectangular steel group, and the cross section of the main beam is an inverted triangle.

該主梁與傳統(tǒng)正三角桁架相比有以下幾種優(yōu)勢：

Compared with the traditional positive triangle truss, the main girder has the following advantages:

1、 上下弦桿截面相差不大，形心位置靠近與截面中心線接近，受力更加合理。

1, on the lower chord section difference, centroid position near the section center line, more reasonable stress.

2、腹桿系統(tǒng)為由原來的大部分為受壓桿件變成了大部分為受拉桿件，更充分利用了材料的性能。

2, the ventral rod system on the ground for the most part of the compression bar into a majority of the tension bar, more fully utilize the material properties.

3、腹桿采用矩形鋼：傳統(tǒng)正三角桁架用的角鐵在運輸或使用中遭碰撞和擠壓容易變形，導(dǎo)致安全隱患，矩形鋼抗側(cè)向沖擊力強，不易變形。

3, the traditional rectangular steel truss with triangular truss are: iron in transportation or use by collision and extrusion is easy to deform and cause safety hazards, anti lateral impact force of rectangular steel is strong, not easy to deformation.

4、主梁截面是規(guī)則的三角形，可疊起來運輸，運輸方便。

4, the main beam section is a regular triangle, can be stacked up and transport, convenient transportation.

5、制作工藝上比原來的正三角主梁焊接點和焊接量大大減少，減小了制作過程中產(chǎn)生的內(nèi)應(yīng)力危害。

5, the production process than the original triangle main beam welding point and the amount of welding is greatly reduced, reducing the production process of internal stress.

6、本產(chǎn)品的支腿可以是鋼管腿、花架腿、包廂腿，用戶有很大的選擇空間。

6, this product can be leg steel legs, legs, legs flower box, users have a lot of options.