![]() ![]() All other lock mechanisms are replaceable, and parts can be secured from the supplier. If during inspection, one of the cones of the lock is found to be damaged, the lock can no longer be used and should be disposed of. ![]() Easy to maintain, assemble and disassemble.Īll twistlocks should be inspected, cleaned and lubricated on a regular basis to ensure that they are safe for use.Symmetrical to be used upside down when required.Compatible with both hinged head and fixed head lashing rods.Easy to determine whether the twistlock is locked or unlocked from the position of the handle.Properly secured operating rids that do not fall down from the container.Meet ISO strength requirements and other specifications.Features of a Good Manual TwistlockĪ good quality twistlocks should include a number of essential features: To unlock the containers for removal, return the operating rods to their original position before removing the top container. ![]() This makes it easier to visually ensure that containers are locked in place, and to unlock the containers in batches when it is time for removal. Select right to left or left to right locks so that all operating rods sit in the same position when locked. When the second container is in place, move the operating rod from right to left, or left to right, depending on the lock configuration.Ī container should be secured with four manual twistlocks, one in each corner of the connected containers. When a second container is lowered on top of the first, the top cone of the twistlock will slot into the open mouth of the lower corner casting of the second-tier container. At this point it should be in the unlocked position, with the operating rod either to the left or the right, depending on whether it is a left or right operating twistlock. To use a manual twistlock, simply place the bottom cone of the lock in the top corner casting of a container that has already been loaded into place. Manual twistlocks are frequently used when securing second tier containers in double stacking configurations. As you would expect, manual twistlocks need to be locked and unlocked manually using operating rods, while semi-automatic and automatic twistlocks automate some of the process. Twistlocks were developed in the 1950s by American engineer Keith Tantlinger, who is responsible for revolutionising shipping practices.Ĭurrently it is possible to obtain manual, semi-automatic or automatic twistlocks. A twistlock and corner casting are now the standardized method for securing shipping containers internationally. ![]()
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February 2023
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