Hoist and Cranes

THANKS FOR YOUR GOOD EXPLANATION.

Based on your explanation, I have a question..

If I want only TWO action 1) Hoist 2) Trolley (As per your explanation) than what is the correct Terminology that We have to use to investigate with vendor or in market !!! (We can say - CRANE or we have to use HOIST as a correct word ??)

If we have only TWO action (HOIST : - Raise/Lower loads , TROLLY - Sfift the hook along the Monorail) we don't need bridge and In that case, Monorail is sufficient.

Can I mention "Crane with Monorail" or "Chain Pulley block with Monorail" for Total TWO Acrion we need???

With regards,

yes, If you only need to hoist and trolly you can do so as you desire. For instance, in pumping houses, a single rail is mounted along the centerline of the pumps/motors and extends to a door or exterior hatch. The hoist rolls can only travel along the flanges of the beam. Just refer to this system as a hoist and rail.

Thanks Mr. Bill,

So, we can differentiate Hoist :- as a Chain pulley block with Monorail.

and

Crane : - As a Bridge crane with all 3 diff. action what you explained in your 1st mail.

Both Hoist and Crane can be Either Manual operated or Elecrric motor operated.

Is it correct ?

with regards,

I wasn't the first to answer, that was Milo. And he did a pretty darned good job, but you really need a simpler answer.

there are many different lifting devices, block and tackle - being the simple rope and pulleys of old. then there is the chain-hoist or Chain-fall - you see auto mechanics often use these to life motor blocks from cars, and you have hoists that are winch style that use spools or drums to wind the lifting cable that are where I think you are going. Although there are combinations of mechanisms that could take forever to resolve, you do not really need to get to that detail here. specify your load, its size and where it needs to be moved from and to.

You need to specify the range a weight to be lifted and the availability of electricity to determine the best type of lifting device. If you need freedom of lateral movement then specify a single rail for a trolly that carries the lifting device - or - bridge system that carries the rail that carries the trolly.

Therefore you can identify the number of directions of movement.

call the hoist the 'lifting mechanism'.

call a crane and lifting mechanism with multiple directions of movements.

there is a grey area in terminology between what is technically correct and what conveys the information you wish to get across to another individual and much overlab between peoples understanding of these terms.

be absolutely clear on your maximum load to lift, max dimensions of the load and required range of lift and of travel. Then the exact terms you use become less important.

BillH has given a nice explanation below.

If you look up "jib Crane" you may find that it fully describes the capabilities that you need, A means to lift and lower (hoist) the load; and a means to move the hoist and load along a rail.

Terminology can be confusing, In the mills I worked in manually operated block and tackle, come along, chain fall, or chain hoist all were manual means to lift. They were not considered "cranes". To us a crane had an electrical means of operation. So an electrically driven one of the above was called a crane. What was interesting to me was that a "chain fall" in dept. A was known by "come along" in dept. B, each dept. had its own "dialect" But these were mills of thousands of people.

Thanks for your feedback to us posters.

milo

In

It should a "Electrically operated Hoist".

It does NOT have to be Electric. Hand power (manual), Air, or Hydraulic are all means of operating a crane or hoist.

Hi...call it hoist with a travelling trolley

Something like this below

Hi Milo, What a nice post i like your opinion about cranes and hoist. I think something like that so thanks for sharing this opinion here.

Hoist Crane || Jib Crane

Nice post friend, Its really very useful for me. These are some of the things you should remember when operating a crane and hoist. It is important that you realize the importance of caution and safety to protect you and your crewmen while the crane is operating.

Thanks for sharing this.

Hoist Crane || Jib Crane

Hi...

A crane is nothing but a portable hoist just like an antenna is a portable Ariel.

Every crane has a hoisting drum along with other mechanism, like brakes etc. Cranes can be rough terrain, crawlers, derricks, wall or post mounted jib cranes, floating cranes, overhead cranes largely referred to as EOT cranes, monorail tracks straight or curved. Whereas, a Hoist is a stationary lifting devise and it need not be only a chain pulley block. You could even include a electric winch with a latticed mast or the lift mechanism mounted on the top of a lift shaft as a hoisting gear.

Anything else?

Anil Tiwari / Delhi

Excellent post,

I like your ideas about hoist and cranes. A hoist is a helpful device that is used for lifting/lowering loads. This is usually done by means of a barrel or a drum where a chain or a rope can be wrapped around.

Thanks

Hoist Crane || Jib Crane

Hi Nilesh,

If you wish to invite offers for the Hoist or crane then you need to specify more points as under:-

1.Hoist:- It is used for handling of the load in straight path.

Capacity in Tonnes,Height of Lift (clear movement of the load) in mts., Manually operated or electrically operated (Chain Pulley Block or Electric Hoist), Type of travel Electric or manual, duty cycle (Medium/Heavy Duty), Location Indoor or Outdoor, Environment in dusty or hot location.

2. Crane:-It is used for three dimensional use in factory bay.

Capacity in Tonnes, Span in mts. (width of the shed),Rail height in mts, Height of lift required,L.T length(length of Shed), Operation from Pendant from floor or from cabin mounted on the crane. Other details as per Hoist.

A crane consists of a hoist, trolley, and bridge. The bridge portion can be a jib, gantry, semi-gantry, etc.

A crane isn't a crane unless it has all of components. A hoist is merely a component of a crane.

I hope this helps you understand but you can contact CMAA or MHIA for further explanation.