What’s the material requirement of the space frame cone?

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 The space frame cone is made of carbon steel material, and various steel structure frame can be used. The frame structure design scheme has light raw materials and faster installation speed. Widely used in large-span coal sheds, stadiums, indoor swimming pools, multi-function halls, basketball halls and other steel structure space frame projects.

The production and processing precision of cone, connecting plate and sleeve specifications are strictly in accordance with the requirements of design drawings and quality evaluation standards. Each specification model is 5% (and many more than 10) sampling for appearance and production inspection of machining precision. The appearance inspection ensures that there are no cracks, coarse crystals and air oxide skins. The production and processing precision selects special tools such as vernier cards and dial indicator V-shaped blocks to ensure compliance with the design drawings and the "Space Frame Structure Engineering Quality Inspection and Evaluation Standard" (JGJ78 -91) in the requirements of Article 3.3.3.


What’s the material requirement of the space frame cone?

The cone length will affect the size of the bolt ball. When the intersection angle of the two rods on the same bolt ball is very small, the standard of the bolt ball diameter should be clarified. In order to avoid the collision of high-strength bolts in the ball and the collision between the rods, Therefore, it is advantageous when the cone is longer.

The existence method of the cone in the frame structure is to form a rod with steel pipe. The actual assembly and welding process is: first preset the high-strength bolt in the cone head bolt hole, and stick it firmly with film to avoid falling into the cone. Subsequently, a special clamping tool is used to carry out automatic assembly. The key to precise positioning of the cone is to rotate the mold-thimble on both sides to manipulate its center line. The length of the rod is manipulated according to the limit switch block. When assembling the rods, ensure that the flatness between the top of the cone on both sides of the rod and the center-line of the steel pipe is 0.5%R (R is the half-warp of the bottom of the cone), and the center-line of the inner hole of the cone on both sides of the rod is equal to the center-line of the steel pipe. The degree of non-parallelism cannot exceed 1% of the pipe diameter. And make sure that there is a gap of 2 to 3 mm between the top of the steel pipe and the cone. Finally, use CO2 vapor to maintain the welding.

The spherical space frame bolt ball is composed of bearing steel balls, high-strength bolts, tightening bolts, sleeves, taper heads or connecting plates. The processing process is: to open several holes with inner wire connection on a ball, and use to connect several rods at one point, the key is that when it is used in a space frame, it has the effect of connecting rods and rods. Bolt balls are widely used in industries without oil pipeline equipment in mines and oil production plants and oil pipelines with high requirements. They have the characteristics of small connection points, light weight, wide application fields, and convenient use.

Bar material cutting length = rod welding length-2 (cone length-cone end length-1mm).

What’s the material of the space frame cone?

According to the design drawing and the bar material table, calculate the stop length of the cone head, and compare it with the cone head in the company's inventory or the cone head used in basic applications to check whether the stop length of the two is the same. Or adjust the method to reduce the length of the bar opening. The cone head can also be customized according to the design drawings.

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