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- There's different types of overhead cranes
based on application and need.
When you get into higher capacity, you start looking
into the structure itself and then you're really looking
into what the crane is actually doing.
So that is really the driving force
behind the type of crane that is chosen.
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Componentry that's used for the cranes, the hoist,
the end trucks, the type of controls,
that is really determined on the application
that the crane is being used in.
So if it is going to be a situation where you're doing
a lot of higher percentage of the capacity lifts,
that is all going to go into higher end
Lexus type componentry.
If it's a standard application, standard lifting
like fabrication, then you start looking into
the more affordable budget friendly
and cost conscious componentry.
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The quality itself lends to fitting
within the CMAA standards.
So you don't necessarily have a drop off in quality,
it's more the components being able to handle
a higher duty cycle as opposed to a lighter workload.
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Modular cranes are typically used again
in the lighter duty typical fabrication.
When you get into a process crane, you're looking at
higher capacity lifts or higher percentage capacity lifts,
higher turnover so this crane is running
for a longer period of time each day.
A process crane has maintenance in mind
so downtime is very critical with those
types of overhead crane so if you're in a steel mill
or an auto processing plant, you need to look at
how much downtime affects your production.
If production is decreased and your overhead crane is down,
it's gonna hurt your business a lot more
so you need to look at those components.
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Gantry cranes can be used
in a number of different applications.
Portable gantries that are basically moved
into an area, a peak is made, gantry actually doesn't move
while it's under load and you also have cranes,
you have gantry cranes that are used in other applications
where they're on a rail system or tied into the building
on one side or it's used to lift materials
and move to the other side.
So if you have an application
where you have a large overhead crane that spans a wide bay
but you don't necessarily wanna be able to use that
for lighter capacity lifts, you can put in a gantry crane
on rails on the floor and then use that to move materials.
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You can use different cranes within the same bay.
We've done projects where you have an overhead crane
that runs an entire bay and again, it's a higher capacity.
The gantry crane below it actually is a lighter capacity
and runs in just a certain area of the bay
and I've also seen applications where you have
an overhead crane moving in one direction
and the gantry crane is actually moving
in the perpendicular direction.
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So monorails are used in lighter applications as well.
What you are sacrificing by using a monorail is that y axis.
So we always say that cranes are used for x, y and z axis
so you've got your lift, you've got your side to side travel
across the bay and then you've got your runway travel.
A monorail only gives you the lift and basically
what we call a runway travel.
So it's in a single line,
it doesn't have any side to side movement to it,
they're moving materials from a drop zone into a machine
and it doesn't need to go side to side at all.
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You've got different types of jib cranes.
Those are typically used for
more of a workstation environment.
So if you have a person that's working on a table here
and they just need to pick materials off of a pallet,
move it onto a table, do some maintenance work,
do some fabricating work and then put it back on the pallet,
you can use a jib crane because it's more cost effective
and again, it's used more in a workstation environment
where you just need a radius of swing.
You've got different types where a jib is mounted
on the floor on a base plate and gives you 360 degrees
of full rotation.
If you don't want that floor space taken up,
you can also mount them off of a column,
the thing you lose there is your ability to rotate
a full 360 degrees, you're more along the lines
of hundred and eighty to 200 degrees of movement.
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Difference between a jib crane and a workstation crane,
again, they're both used for a workstation environment.
What the workstation crane allows you to do
is still have movement.
Those are typically lighter capacity max capacity
(talks) is typically two tons.
So you'll be able to do work in one cell, lift the material,
move to the next cell and onward.
Also the ability to add on to those systems is there
while jib, you're stuck in that radius,
you don't have the ability to move outside of that.
The workstation crane gives you that XYZ motion again.
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Man you really need to look at the future
and what you expect to be able to do
within the space that you have.
If the space is going to require higher capacity lifts
than what a normal jib crane or workstation crane
can handle, you need to look at an overhead crane
because that's really going to be what your need
is going to be in the future.
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