How to build an aluminium truss?

1. First place the four bases in a rough position on the ground, and adjust the lower legs to make them on a horizontal plane;

2. Insert the lower part of the diagonal support into the outer side of the base on the four corners, insert 2 in each corner, a total of 8;

3. Fix the reverse head on the base with screws, pay attention to the direction of rotation of the reverse head to be the same as the one marked in the figure;

4. Put a square sleeve on the reverse head;

5. Connect the beams on the ground;

6. Butt-connect the two ends of the beam with the two square sleeves on both sides. At this time, the beam part is assembled on the ground;

7. Connect the column truss while lying flat, then screw one end to the reverse head, and the other end to the cross arm. At the same time, the hanging gourd and the cross arm are connected. The function of the gourd is to lift the cross beam truss below. ;

8. A group of people slowly erect the column truss together, taking care not to push the column with too much force, and then fix the screws on the reverse head;

9. After the upright is erected, hook the hook under the hanging gourd to the beam underneath through the sling;

10. The 4 people slowly pull the hanging gourd together to pull the beam to the left and right positions of the person's head;

11. Install lighting and sound equipment on the beam;

12. Four people pull the hanging gourd together to a predetermined height to stop;

13. Tighten one end of the diagonal support to the column, and the other end to the horizontal support of the base, so that the aluminum alloy frame is completed.