The crossbeam clamp consists of three parts: a tie rod, a cantilever beam, and a support rod; it is used to fix the crossbeam. The tie rod has a protrusion at one end. During installation, the tie rod protrusion is inserted into the notch of the crossbeam pad, and one end of the cantilever beam is hooked onto the rectangular hole of the truss vertical member. Then, the support rod is rotated with a lever (or wrench) to press it tightly and fix the crossbeam.