Containers were developed to improve the efficiency of sea and rail transportation, but what exactly is the efficiency?
The general image of the box type container is that an increase in transportation volume equals greater efficiency because it allows for stacking. However, from a logistics point of view, the use of containers has not led to a dramatic increase in transportation volume.
So what exactly was so revolutionary about containers?
Answer. Handling" (loading and unloading) has become easier, and loading/unloading and carrying can be done in a shorter time. That's it!
There are various methods for handling (cargo handling) of containers, but the following are used in addition to cranes.
This vehicle is specialized for handling large containers and is a special cargo handling vehicle similar in structure to a crane truck. A spreader attached to the end of the arm, similar to a crane, grabs the container and lifts it up.
Unlike the toplifters described below, the telescopic boom allows containers to be moved without moving the vehicle, and is most commonly used at ports and other locations where large containers are handled.
|top lifter|| |
Similarly, a device called a spreader is used to grab and lift the container, but the body of the vehicle uses a forklift truck, which is less expensive than a reach stacker.
Unlike reach-stackers, spreaders are becoming fewer and fewer in number because, unlike reach-stackers, spreaders can only move up and down, so all container movement must be done by the vehicle itself, which requires a great deal of driving skill.
It is used for handling small to large containers (lightly loaded).
Since no special modifications are required and only the appropriate loads need to be selected to handle them, forklifts are generally used except in ports and other places where large volumes of containers are handled.
Even in rail transport, you can see forklifts unloading at smaller regional stations.
(Left: Top Lifter, Right: Forklift)
Containers can be transported door to door from the shipping point to the arrival point without the need to move the cargo in and out of the container.
Because they can be handled by forklifts at factories, warehouses, airports and ports, they can be handled without special equipment, which is why containers have become so popular.
This article will provide you with the information you need to handle containers with a forklift.
The presence of forklift pockets
ALL CONTAINERS UNDER 20 FT. HAVE A "FORKLIFT POCKET" (OR FORK POCKET) FOR INSERTING AND LIFTING FORKLIFT NAILS.
BELOW IS A PHOTO OF THE 20 FT CONTAINER STACKING AREA. ONLY THREE CONTAINERS ARE CIRCLED IN RED THIS TIME, BUT ALL OF THEM ACTUALLY HAVE "FORKLIFT POCKETS" ON THEM.
Container sizes and recommended forklift sizes
The containers we mentioned that come in a variety of sizes, but they vary greatly in length from 40ft to 12ft.
HERE ARE SOME OF THE RECOMMENDED FORKLIFT SIZES FOR HANDLING (AND LOADING) 40FT, 20FT AND 12FT CONTAINERS.
40FT (feet) Container
WHEN IT COMES TO 40 FT CONTAINERS, NOT ALL CONTAINERS HAVE FORKLIFT POCKETS. ALSO, THE CONTAINER ITSELF ALONE WEIGHS BETWEEN 3.5 AND 4 TONS.
The forklift pockets are spaced wider apart to balance the 40ft (approx. 12m) length, with approximately 1.8m being the main size.
We recommend handling with a forklift (10 tonnes or more) that can handle a jaw width of approximately 1.8m or requires special attachments that are wide and have ample performance for balance.
Handling (cargo handling) with a forklift pocket is not recommended for a container of this size when the container is loaded. We recommend using a top lifter or crane to handle the container when it is empty and loaded.
20FT (feet) Container
This size is highly versatile and is highly valued in Japan. The weight of the container itself is about 2 to 2.5 tons, so it can be lifted by a small forklift truck.
However, the spacing between the forklift pockets varies from 1m to 1.8m, so the container must match the nail width of the forklift you own.
Also, if it is too small, the center of gravity will be on the tip of the nail, which may lead to poor stability.
You need to choose a forklift with plenty of room to spare, as this can cause a fall accident.
(20FT CONTAINER IMAGE)
12FT container (e.g. shipping)
It is used as a railroad container in Japan and weighs about 1.5 tons, which gives it the best handling performance.
Forklift pockets are made to be used from about 1.0m apart.
With about 5 tons of cargo in it, it is suitable for handling with a load in it, so it can be handled (cargo handling) with a forklift of 10 tons or less.
(12FT CONTAINER IMAGE)
Summary of container handling
In a nutshell, the proper handling (cargo handling) of a "container" varies depending on its size and weight.
Selecting a container that matches the size of the forklift available or choosing a forklift that matches the container will ensure safe handling (cargo handling).
We hope this article will help you choose the best "container" for you.
|INTERNATIONAL STANDARD (ISO) DRY CONTAINER||Railway Container|
|weight||taking care of oneself||3.5~4.0t||2.0-2.5t||1.5~2.0t|
|Distance between forklift pockets||1.8m||1.0m~1.8m||1.0m~1.4m|
(Comparison of the inner dimensions/opening size/floor area of the containers introduced here)
*About the length of the container
The above is "About Container Handling".
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