| 摘要 |
A rigging system for flying a vertical stack of loudspeakers includes left and right rigging side frames (15, 17). Each rigging side frame includes a frame structure having a top end (43), a bottom end (45), and rear and front corners (51, 53, 55, 57) which is mountable to the side of a correspondingly sized loudspeaker (13). Each rigging side frame further includes a rear link (59) for pivotally linking the rear corner of a rigging frame of one loudspeaker to the rear corner of the same side rigging frame of another loudspeaker placed in stacked relation therewith, and a cam plate link (61) pivotally attached to a cam pivot point (85) at one of the top or bottom ends of the frame structure in displaced relation to the cam link. Two or more link openings (143) are provided in the cam plate link at different angles about the cam plate link pivot point and at different radial distances from the cam plate pivot point. Each rigging side frame further includes a cam plate attachment structure (95, 105) on the top or bottom end of the rigid frame structure opposite the frame's cam plate link. This cam plate attachment structure receives cam plate links of rigging side frames of adjacent loudspeakers (13a, 13b) in the stack. The cam plate link of one side frame can be deployed about its pivot point to engage in the cam plate attachment structure of an adjacent side frame such that the side frames can be linked together at a desired splay angle by pinning the cam plate link of one frame to the cam plate attachment structure of the adjacent frame using a selected link opening in the cam plate link.
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