Ship-to-Shore(STS) container crane is widely used for loading and unloading containers for ships to the trucks standing on shores. The construction of the gantry crane chassis is very advanced, so the crane can have high-performance efficiency. A portable gantry crane can move along the rails mounted on the boom arm and the entire crane moves along the rails mounted on the ground. Overload control and monitoring systems show payload and help the operator avoid overcharging the gantry crane which would otherwise impair its performance later.
Most of the gantry cranes are designed in large models mostly for industrial uses and ports cargo offloading, but there are also smaller cranes are available for relatively small weight lifting such as that inshore warehouses. The gantry crane can be height-adjustable or fixed and is usually made of steel or aluminum, depending on the application of the crane. Get more info of gantry crane: https://aicrane.com.mx/venta-de-gruas-porticos/
The construction of the gantry crane includes two vertical beams, followed by a cross beam. Almost all types of gantry crane have two support flames and with wheels at the bottom, making it transferable and mobile.
A smaller gantry crane is usually used in lifting medium weight containers from the ships to the trucks onshore as well as from truck to the workplaces and warehouses. During storage, the crane is used to move heavy and bulky materials from a distance in the work area. Weighs of about four tons can be lifted by these types of container crane thus making them very effective in lifting containers from the ships to the shore.
Large container gantry crane(grua portico para contenedores) has a fixed working height of about five feet, although the crane height can be adjustable to various heights more than the standard manufacturing height. Note the companies you contract to design your gantry crane can customize it to meet the specific needs of the work requirements. It is advisable to choose a company with the capacity to design and manufacture quality gantry crane for your operations.
Factors to consider when choosing a container gantry crane.
The lowest overhead obstruction. Note the height of the lowest building or any object around the work station will determine the size of the gantry crane which can fit in the workplace. This will also determine the movements of the gantry cranes to and fro the various locations within the workplace. You should make sure that you can place it and, if necessary, move it inside and out of the desktop and that it fits under the lowest object directly above the workstation.
The desired hook height: This is actually the main factor to consider in terms of height requirements. This applies to the measurement of the floor in the interior of the lower hook of the crane( gancho de la grúa ) at the highest point where the load should be lifted when attached to the hook. Make sure you are considering slack in a chain or a hitch.
Chain Fall: Winches come in different lengths. The chain fall is the actual length of the chain free for lifting objects. In the case of a 20-inch chain drop, a 20-inch usable chain is available from lift to hook when fully extended. Keep in mind the measurement of inventory as well as the need to downgrade to determine your network downgrade requirements.
Efficiency and capacity: Ensure that the lifting load capacity does not exceed the gantry crane capacity. Most likely the capacity of the crane and the winch are the same. The crane capacity must be equal to the capacity of your winch. All container crane elements must be equal to or greater than the maximum load weight and should not exceed a very significant value since this may damage your gantry crane. And different types of gantry crane have different capacities. Rail mounted(sobre rieles) type may have a larger capacity.
Select the gantry crane with capacity that is closest to the container weights so that it will perform the task effectively. However most of the gantry crane is tested in the manufacturing company at around 125% load rate, so always estimate this to avoid excessive overload.
Buying considerations.
When buying a container gantry crane keep in mind that not all cranes have a good design. Buy from a company that has a good reputation for building equipment and tools that have high quality in performance. When purchasing this type of equipment, you should request a comprehensive defect warranty( garantía de defecto ) of at least three years and a minimum of two years of replacement.