Clevis connection
AssigneePneumo Abex Corporation
InventorsWilliam Dirkin, Gary Feldt
Life of this patent
Estimating the term…
Abstract
Clevis connection includes a clevis bushing having a bushing sleeve, with a shoulder at one end having a tapered inner diameter, and a longitudinally extending slot through the shoulder and a portion of the length of the bushing sleeve. The bushing is inserted through aligned holes in the clevis arms and connecting lug. Then a tapered expander collet is inserted into the tapered inner diameter of the bushing shoulder and a bolt is inserted through the collet and bushing so that the bolt head loads through the collect which expands the bushing to cause pre-stress on the surrounding lug and a pre-load clamping of the connecting lug to one of the clevis arms, and cause pre-stress on the other clevis arm.
Claims20
A clevis connection comprising a clevis member including first and second clevis arms, a connecting member having a connecting lug received between said clevis arms, a bolt extending through respective first and second openings in said first and second clevis arms and through a third opening in said connecting lug, a bushing surrounding said bolt, said bushing having a sleeve portion extending through said third opening in said connecting lug and into said first opening in said first clevis arm, said bushing having an enlarged shoulder extending into said second opening in said second clevis arm, said shoulder having an inner end face radially overlapping one side of said connecting lug, and means for urging said shoulder against said one side of said connecting lug to clamp said connecting lug against an interior surface of said first clevis arm.
A clevis connection comprising a clevis member including a pair of axially spaced clevis arms, a connecting member including a connecting lug received between said arms, a clevis pin extending through aligned openings in said clevis arms and connecting lug, means for pre-load clamping said connecting lug to an interior surface of one of said arms to eliminate lateral play, said means for pre-load clamping comprising a bushing surrounding said connecting pin, said bushing having a sleeve portion extending through a first opening in said connecting lug and into a second opening in said one clevis arm, said bushing having an enlarged shoulder extending into a third opening in the other of said clevis arms, said shoulder having an inner end face radially overlapping one side of said connecting lug, and means for urging said shoulder against said one side of said connecting lug to clamp said connecting lug against said interior surface of said one clevis arm, and means for causing a pre-stress on a wall of said first opening in said connecting lug.
A clevis connection comprising a clevis member including a pair of axially spaced clevis arms, a connecting member including a connecting lug received between said arms, a clevis pin extending through aligned openings in said clevis arms and connecting lug, means for pre-load clamping said connecting lug to an interior surface of one of said arms to eliminate lateral play, and means for causing a pre-stress on a wall of a first opening in said connecting lug, said means for causing a pre-stress comprising a bushing surrounding said clevis pin, said bushing extending through said first opening in said connecting lug and into respective second and third openings in said clevis arms, said bushing having a transverse slot therethrough extending axially from one end of said bushing received in said third opening in the other of said clevis arms and into said first opening in said connecting lug, and wedge means for expanding said bushing into engagement with a surrounding wall of said first opening in said connecting lug to pre-stress said wall of said first opening in said connecting lug, said wedge means also expanding said bushing into engagement with a wall of said third opening in said other clevis arm to cause a pre-stress in said wall of said third opening in said other clevis arm, said means for pre-load clamping said connecting lug to said interior surface of said one clevis arm comprising an enlarged shoulder on said one end of said bushing which extends into said third opening in said other clevis arm, said shoulder having an inner end face radially overlapping one side of said connecting lug, and means for urging said shoulder against said connecting lug to clamp said connecting lug against said interior surface of said one clevis arm, said transverse slot extending axially inwardly beyond the length of said shoulder into said first opening in said connecting lug.
Dependencies are inferred from the claim text.