Sleeve Block For Bolt Truss Lighting System
The aluminum alloy truss square sleeve is used to connect the column aluminum alloy truss and the beam aluminum alloy light frame. When the square sleeve is pulled by the chain hoist, the beam can be moved up and down.
Description
A pulley is arranged inside the square sleeve, so that the square sleeve can slide vertically along the direction of the column. The square sleeve is different from the six-sided joint. The six-sided joint cannot move up and down after connecting the beam, while the square sleeve can be moved.
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