Pivoting latch locking assemblies for height-adjustable twistlocks

Abstract

A locking latch assembly for an adjustable-height twistlock assembly includes a mounting bracket configured to be secured to a housing base of the twistlock assembly, a latch having a forked portion configured to engage with a shaft rigidly connected to a locking pin of the twistlock assembly, an axle passing through the mounting bracket, and a latch pin secured on the mounting bracket. The latch is secured around the axle to allow the latch to pivot relative to the mounting bracket. The latch pin engages a first surface of the latch when the latch is in a locked position, and engages a second surface of the latch when the latch is in an unlocked position. The forked portion of the latch is configured to engage with the shaft, in the locked position of the latch, so that the shaft is substantially restricted from rotational movement. The locking pin has a head and a stem, and the shaft is secured to the stem. The stem has an upper bolt hole and a lower bolt hole passing therethrough, the upper bolt hole passing through the stem in a direction perpendicular to the lower bolt hole. The shaft has an upper bolt hole and a lower bolt hole passing therethrough, the upper bolt hole passing through the stem in a same direction as the lower bolt hole. The shaft is adjustably secured to the stem of the locking pin by a bolt passing through the upper bolt holes of the shaft and the stem or passing through the lower bolt holes of the shaft and the stem.