Patent ID: 9163378
Filing Date: 2015-10-20
Classification: E02F,F16B,Y10T

Abstract:
1. A locking device that connects to an end of a dragline pin having a transverse groove within a peripheral surface thereof, comprising: a lock block having a through opening defining an axis and sized to axially receive the end of the dragline pin therethrough; a through bore formed in the lock block extending between opposing sides thereof and transversely intersecting the through opening transverse to the axis, the bore having a first end and a groove defined within a peripheral wall of the bore adjacent the first end that defines a spiral shaped path; a lock pin sized for insertion through the bore to extend from one side of the lock block, across the opening and into the lock block on an opposite side in a locking position, when the dragline in is received within the through opening, wherein the lock pin has a generally cylindrical body with a head at a first end of the lock pin and a projecting nib shaped and sized to engage the groove at the first end of the bore as the lock pin is rotated relative to the bore into the locking position, wherein the lock pin in the locking position extends within the groove of the dragline in approximately tangential to a base of the transverse groove in the dragline pin and locks the dragline pin from translation relative to the lock block; and an insert formed of a resilient material and shaped to be inserted in the first end of the bore, the insert having a slot sized to axially receive the projecting nib therethrough, wherein the insert is configured to be compressed when the lock in is fully installed and to exert an retaining force on the head of the lock in the locking position.