Now, when you know about the four basic types of cranes, it’s essential to understand which one you should pick for your project. Depending on the type of industry you work in and the kind of work you handle, your crane choice passes through a complete checklist. You have to see the crane from every point and find out how it can be the best choice for your business.

So, to help you out, EOT crane manufacturers in Ahmedabad have enlisted the four most important things to consider while buying a crane.

For the success of the project choosing the right crane for the right requirement is a challenging task. If the wrong selection is done it may be risky and dangerous. One who take care of safety, acquire less space, reliability, long lasting, easy to handle, strong in designing, loading, unloading, replacement and require less maintenance is the right crane for the project and one will find best EOT crane manufacturer in Ahmedabad only.

What Is The Type Of Load?

The type of material you will be going to lift matters a lot while choosing the crane. For example, the moment of a bag full of parts of a machine and a tank full of some liquid solution is always different. Even the reactivity of materials and their properties does matter while choosing the right cranes. After reading the types of cranes, you must compare which one will work best with the content you are going to lift.

How High The Load Needs To Be Lifted?

To select the type of boom required, you must know the height of work to be done. Since the crane’s boom also depends on the wind, you need to take the height factor seriously as the wind increases with height. Moreover, the amount of weight that needs to be lifted to that particular height needs to be analyzed before buying the crane. It will help in finding the crane of the right capacity.

The Condition Of The Surface That Will Come Below The Crane

The condition and material of the surface determine the movement of your crane. When the surface is well structured and robust, it becomes a supportive thing for the crane. There are different cranes for each type of surface like if the surface us dirty and grassy, you will need rough terrain cranes, and truck-mounted cranes become useful on concrete surfaces.

Obstacles That Will Come In The Path Of Crane

Nearby buildings, wind, power lines, and many more obstacles will come according to the location of your manufacturing place. Since your train has to tackle all those obstacles, it’s better to choose it wisely. Sometimes, the controls will not work properly in the presence of obstacles, and that’s why choosing one that is designed to get over such issues will work best.

There are four types of the cranes and before buying you should be aware of the weakness and strength of each type.

Overhead Travelling or Bridge Crane

It is also known as bridge crane which is mainly used for industry or factory purpose in maintenance or manufacturing application and extremely useful for loading and unloading trucks where efficiency or downtime are vital factors. It consists of parallel runways with a travelling bridge spanning the two side rail in an ‘H’ configuration. This crane covers the larger and wider area than jib crane or monorail.

Gantry Crane or Portal Crane

It is also known as portal crane and best alternative of the overhead travelling bridge crane. This crane is mainly used in marine, shipyard and railway. The functioning of crane along two rails spaced based on the size of crane to be used. The crane has the movable beam mounted hoist with a structure used to step an object. It basically move, load and unload the shipping container. This crane is used commonly in Europe. Ship-to-shore gantry crane is the largest example for the gantry crane in the world.

Jib Crane

This crane has a horizontal jib that support the boom to a movable hoist fixed to a wall or to a floor mounted pillar. It can be used for welding and fabrication. They provide lifting and dropping of the load within a fixed arc of rotation. The jib crane is fixed and always fitted on the top floor of the building to lift the item from ground to top or vice-versa. They are available with different capacities and configurations considering motorised rotation. The jib cranes are cheaper than any other cranes.

Monorail Crane

Monorail crane is a type of lifting device that propose as a secondary to conventional cranes or conveyors. It is used to relocate the desired product within the defined location or building. The monorail hoist and trolley run on a single steady beam. They are used designed in such a way as can take maximum benefit in curved tracks, multiple switches and interlocks. They are designed in such a way that it can be used for repetitive job and can be handled with computer.

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The lifting solutions come with a number of choices. The most common ones include A-frame gantries and track bridge cranes. While the former one is known for its versatility and portable lifting, the later one is designed to offer rectangular coverage.

By adding smart options, you can definitely make the best use of your available system. Let’s see, how it helps.

Gantries

Gantry cranes are durable, portable, strong, and can adjust in any work environment. They are the best fit for the site to site work because of their flexibility. The flexibility is not limited to the location of material handling, but the height is also adjustable. The workers can increase the legs in six inches to get proper height for a specific material handling or to balance the machine on uneven surfaces. The aluminium gantries can be quickly passed through doorways by adjusting the legs. But the best thing is you can increase the usability of your gantry by customizing some parts of it. The pantries usually come with polyurethane casters which could be replaced with pneumatic tires for better performance when using on different sites.

Another thing to improve performance is a height-adjustment winch-hoist kit. The winch-hoist kit makes it easy for the workers to change the height of the beam without putting it down from the legs.

Workstation bridge cranes and monorails

A single person and can easily handle these cranes inside a rectangular facility. The machines can be mounted on ceilings which eliminate the need for floor space. For factories, where the roof can’t bear the weight of massive overhead cranes, this is the right choice. Also, for rented facilities, these bridge cranes and monorail come in handy. While buying, you can find a large number of choices and customizing options. Some additional features are there with some cranes, which could be processed by the workers. In unsafe work areas, the cranes can be made more convenient to use by adding tractor drive. Also, these machines can be easily connected to others of a similar type, which is an added benefit.

Workstation jib cranes

The Jib cranes make load handling easy and fast. The cranes can make the process effective with a variety of additional options. The portable base with forklift pockets can prepare them for easy movement. Air swivel or electric collector rings offers 360-degree rotation. The telescoping boom sections are designed to make the movement of cranes in tight spaces convenient. They can also be connected with a number of other devices like trolleys, flat festoon cables, rotation stops, and festoon air hoses to work as hook mounted devices.

All the material handling solutions come with endless customization choices. Research and know more and more about all the features and get the most out of them.

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Cranes are meant to carry large loads, and there is nothing in it. The benefits that we get with gantry cranes is that these can move under the load. Some of the Gantry cranes manufacturers can say that the cranes should not be run under a specified pressure, but the truth is all the cranes are designed to be moved under load. These cranes are an ideal option if you are not ready for permanent installation. The cranes can be easily relocated, and that’s why these are best for renting.

Here are a few things that make gantry cranes more useful.

Equipped with casters

The thing that moves cranes under the immense weight is casters. Even a single person can run the cranes under load if the pressure is not much and casters are appropriate. Polyurethane steel core casters reduce rolling resistance and offer smooth operation on plain concrete surfaces. Nylacron casters can offer even lesser rolling resistance plus very less force is required to push the crane. Other options available in the casters include pneumatic tires and V-groove casters. Pneumatic tires are best for uneven surfaces while V-groove casters come handy when movement in a straight line is required.

Motorized Gantry cranes

While the movement of the gantry cranes under load is manual, sometimes motorized movement could be required when the capacity increases. The PF-series gantry trains are best for this purpose. They have a capacity of 15 tons, up to 35 ft of standard height and 40 ft of the standard span. Sometimes, when the there is a need to cover long distances, large bridge cranes are usually expensive. Motorized cranes are a cost-effective alternative. The higher capacity and larger span and height of crane do the job effortlessly. The cranes can move in a fixed path, and straight line plus easy installation makes relocation quick and efforts free.

Safety tips

Being cautious can help you avoid accidents. Here are some safety tips

1. The load should be kept as close to the floor as possible.
2. The load is advice to be kept in the center of I-beam of the crane.
3. Make sure you push the crane and not the load.
4. Don’t use any vehicle like a lift truck to push the gantry crane.
5. Maintain smooth, clean, and obstructions free path for the crane.
6. The load should be prevented from hanging over the support legs.

Added advantages

1. Flexibility: the cranes can be moved even inside the place on a fixed path, and that’s why these are more flexible than regular ones.
2. Safe and efficient: These are easy to move and do not require much force because of the presence of casters. The movement is thus more reliable and efficient with gantry cranes.
3. Can be easily relocated: sometimes, there is no need for permanent installation or the organization can’t afford to install a new piece. There can also be the issue of space, and that’s why gantry cranes are of great use. These can be easily installed and relocated.

In simple words, gantry cranes are cost-effective, easy to operate, easy to install, and easy to relocate. These are the most flexible and efficient material handling equipment available in the market.

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Those Customers looking to buy gantry cranes need to know the answer to specific following questions when making a purchase in order to size their crane correctly. This article addresses those questions.

The two keys areas of consideration are height and span and involve a number of elements.

• Height considerations
• Span considerations

Height Considerations

Lowest Overhead Obstruction

1. What is the lowest object within your work area where the gantry crane will be used and/or moved? You must be sure that it can be erected and moved, if necessary, in and out of your work area and that it will fit underneath the lowest object directly overhead the workstation.
2. The lowest overhead obstruction can be your ceiling, support beams, sprinklers, and part of the system, pipes, railing, or many other things.

Overall Height:

• The overall height of the gantry crane normally includes the distance from the floor (including travelling wheels) to the top of the girder. If the crane is an adjustable height model with a range of 7’6″ to 14’0″ under I-Beam, the overall height, including the casters is that measurement (low to high) PLUS the height of the I-Beam.

Under Beam Height:

• The under beam height is measured from the floor to the bottom of the I-Beam. Again, subtracting the height of the I-Beam from the overall height will equal the under I-Beam height.

Height OF LIFT Requirement:

• This is probably the most critical item in terms of height requirements. It refers to the measurement from the floor to the inside of the bottom hook on the hoist at the highest point your workload needs to be lifted as it is secured to the hook. Make certain you consider any slack in a wire rope or a sling, etc. that you will use to lift your load.

Head Room [HR]:

• Electric Trolleys and hoists differ in size and height as per capacity. If overall height restrictions are tight you may need to shop around for a trolley/hoist combination that will come within your “headroom” requirements. The combined height of the trolley and the hoist down to the inside of the hoist’s bottom hook is called “headroom.”
• Headroom will be measured from the bottom of the rollers on the trolley to the inside part of the bottom hook on the hoist (when attached to the trolley). If you need to be exact, add the thickness of the flange on the I-Beam where the trolley rollers sit. If you are trying to minimize headroom, look for a “lug mounted” trolley/hoist unit. This type of trolley and hoist are mounted to one another which reduces the headroom they will take up in your gantry configuration.

Wire Rope Fall:

• Hoists come in a variety of wire rope hoists length options. The wire rope fall is the amount of wire rope available for lifting. If you have a 15′ wire rope falls, then there is 15′ of usable wire rope from the hoist to the hook when fully extended.
• Keep in mind your head room measurements as well as any need to go below grade in determining your wire rope fall requirements. For example, let’s say you have a 6m.hook height requirement with 1000mm of headroom required for your trolley and hoist. First, the gantry crane should meet or exceed 7.0 m. under I-beam height (6 m. hook height + 1.0 m. head room).
• If we choose a standard crane with 8mm under I-Beam, how much wire rope fall is required to reach a hook point 0.3m above the floor? Answer: 8.0 m minus 1 m head room equals 7 m.” hook height (which exceeds your 6 m. hook height requirement). Therefore you have 7 m. maximum hook height minus0.3 m which equals 6 m. of wire rope fall required to reach a load 0.3 m. above the floor.
• Given popular options you may want to go with a 6 m. wire rope fall. So even though the under I-beam height is 8 m. you only need a standard length 6 m.  wire rope fall to reach a hook point 0.3 m. above the floor.

HEIGHT ADJUSTMENTS GANTRY CRANES:

• For adjustable height models, you may want to consider a height adjustment kit to make height adjustment of the beam easier.
• Beams can be very heavy on steel models and roughly about 1/3 of the overall weight of the crane.
• For easier height adjustment consider an aluminum crane which will be less than ½ of the overall weight of a steel crane, although more expensive.

SPAN CONSIDERATIONS

• There are two measurements to note on the span or width of your gantry crane. The first is the overall width which is simply outside edge to outside edge of the beam and legs.
• Gantries have end stops to keep the trolley from rolling off the beam and/or base plates (used to mount the legs and beam together versus welding). This means the trolley does not roll the full length of the beam and this must be considered in determining the width of the beam you require.
• The “usable width” measures the distance between the end points where the trolley will stop on either side. Usable width will be in the neighborhood of 2’6″ less than the overall width of the beam.
• Always also be careful when you indicate your shed length and also cross check wheel base / end carriages length because 50% length of end carriages cannot be utilize in your regular operation area so you must cross check your shed length as well as clear operational area.

Capacity:

• Be certain that your hoist capacity does not exceed the capacity of your crane or trolley. Ideally, the capacity of the crane, trolley and hoist are the same. From the top down, your crane should equal or exceed the capacity of your trolley and your trolley should equal or exceed the capacity of your hoist. All components of your gantry system should equal or exceed the weight of your maximum load but not by too much. Choose a capacity closest to your load that will get the job done.
• Cranes are typically tested at 125% of the rated capacity so there is no need for over kill. (Your maximum load should never exceed the rated capacity).
• Armed with this knowledge, you are now ready to shop for your gantry crane.

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