Bolt ball joint space frame

Bolt ball joint space frame: 

The grid is a space structure composed of multiple rods connected through nodes in a certain grid form. The bolt ball grid is one of the categories. It is a spatial structure connected by bolt balls and rod bolt nodes.

1. The steel pipe material should be re-inspected before cutting the bolted ball grid steel pipe. It can be put into use only after it is qualified. The HID-900MTS CNC pipe intersecting line cutting machine is used for cutting, and the cutting quality meets the technical standards.

2. The cone head is made of round steel. The cone head blank must not have defects such as overburning or cracks before forging. It requires normalizing treatment after forging to remove the scale.

3. After the cone head is forged, a milling machine is used to process the step, the small end plane of the cone head and the weld groove to match the cone head and the inner wall of the rod tube. The verticality of the two end surfaces of the cone head should meet the technical standards.

4. When assembling the cone head and pipe fittings, ensure that there is a gap of 2-3mm between the end of the steel pipe and the cone head, and the perpendicularity between the top of the cone head at both ends of the rod and the axis of the steel pipe is required to reach 0.5%R, R is The misalignment between the radius of the lower end of the cone head, the axis of the round hole on the end face of the cone head at both ends of the rod and the axis of the steel pipe shall not be greater than 1% of the pipe diameter.

5. After the rods are assembled, use the NXC-2×500KR double-head automatic welding machine for grid rods for welding. Welds should be tested for tensile strength, and their bearing capacity test coefficients should meet the requirements of the specification.

The requirements for technical personnel during the construction of Steel structure buildings are as follows: Proficient in the design, manufacturing and use of tower cranes. Be familiar with the use of other cranes. At least one model of tower crane used in high-rise steel structure projects has a comprehensive understanding and mastery of its structural characteristics. Proficient in accurately calculating the combined displacement of the tower crane's boom, tower body, and lifting wire rope during fixed-point assembly. Includes both vertical and horizontal surfaces.

Possess comprehensive engineering and technical skills in the design, manufacturing and installation of steel structures. The design should include multiple large-scale steel structure buildings. The basic contents and characteristics of the three steel structure design codes promulgated by our country in different periods should be clearly understood. Proficient in steel structure manufacturing technology. Be familiar with the laws of welding deformation and welding shrinkage. And can accurately calculate the amount of welding shrinkage. Proficient in various steel structure processing techniques and tooling design.

Be familiar with the mechanical characteristics of car cranes and tire cranes. The Bolt ball joint space frame is engaged in the technical work of earth lifting. He has designed and applied the unicorn grill, Lingji grill, herringbone grill, gantry and tripod. Ability to quickly design, calculate and select hoisting rigging without the aid of any books or information. For installation technical problems that arise on site, we can quickly propose 1-3 problem solving methods and construction requirements.