초록 ▼

A beam extruded of aluminum alloy for use in cranes and conveyors is formed with a channel having runs that straddle an open bottom and are strengthened by pin receivers formed in C-shapes with material integrally extruded under the runs. An upper region of the channel is formed with upright paralle

A beam extruded of aluminum alloy for use in cranes and conveyors is formed with a channel having runs that straddle an open bottom and are strengthened by pin receivers formed in C-shapes with material integrally extruded under the runs. An upper region of the channel is formed with upright parallel fins that serve as a mounting element. T-shaped strengthening upper beam elements can be secured to the channel by sliding them between the parallel fins where they are held in place by fasteners. The upright fins also accommodate a variety of mounting arrangements.

대표청구항 ▼

[ I claim:] [1.]1. A unitary crane or conveyor channel beam integrally extruded of an aluminum alloy to form a channel with an open bottom straddled by runs that support a wheeled element for rolling along the runs within the channel, the beam comprising:a. a bottom of the channel having an integral

[ I claim:] [1.]1. A unitary crane or conveyor channel beam integrally extruded of an aluminum alloy to form a channel with an open bottom straddled by runs that support a wheeled element for rolling along the runs within the channel, the beam comprising:a. a bottom of the channel having an integrally extruded pin receiver configured to retain a pin inserted therein formed underneath each run on each side of the bottom opening, the position of the pin receivers under the runs and the extruded material provided under the runs configuring the pin receivers serving to thicken a substantial portion of the runs and strengthen the load-bearing ability of the runs;b. a pair of upstanding and parallel fins integrally extruded on a top wall of the channel above the open bottom to form a mounting element; andc. an extruded unitary strengthening element having a vertically extending web secured to the mounting element between the upstanding fins.