What are the 3 basic components of an overhead crane?

What are the 3 basic components of an overhead crane?

The industrial bridge crane is often called an overhead crane or overhead traveling crane. It is also commonly referred to as a suspended crane and is composed of three major components: a bridge, a runway, and a hoist and trolley.

What are the major considerations in the design of cranes?

Mechanical principles There are three major considerations in the design of cranes. First, the crane must be able to lift the weight of the load; second, the crane must not topple; third, the crane must not rupture.

What is crane runway beam?

The crane runway beam section of overhead cranes can consist of a rolled I-section, either with or without side reinforcements for supporting horizontal loads, an I-section that has been welded together or a box girder. The same type of sections can be used for suspended cranes, however without a rail.

What is the crane span?

The crane span is the measured center-to-center distance between the runway beams. One of the most important measurements you can provide during an overhead crane consultation is the crane’s span.

What is meant by EOT crane?

Electric overhead travelling crane or EOT crane is one of the most common types of overhead crane, or called bridge cranes, which consist of parallel runways with a travelling bridge spanning the gap.

What are the main parts of a crane?

Here are eight of the most important crane components you should know about.

  • The Hook. This may be one of the most recognizable and important parts of a construction crane.
  • Wire Rope and Sheaves. Cranes use heavy-duty wire ropes to lift extreme loads.
  • The Boom.
  • Counterweights.
  • Outriggers.
  • Wheels and Tracks.
  • The Hoist.
  • The Jib.

What are the two 2 most important factors to consider when sizing a crane for a lift?

Three Factors You Should Consider When Choosing a Crane

  • The duration of the job and the size and weight of the material you will be lifting. Cranes have different specifications, capacities and functionalities.
  • How will equipment be transported.
  • The conditions of the construction site.

What is Max lifting moment of crane?

Therefore it provides a maximum load moment of 144tm or 1440kNm. However as the name 100B indicates, many tower crane manufacturers choose type classifications related to the load moment for their crane range, giving a rough orientation about the capacity of the crane.

How do you pick a crane rail size?

When ordering Crane Rail, these specifications first need to be determined:

  1. The identity of a rail section.
  2. The total length of rail required and a specific number of lengths required.
  3. The number of pairs of matching joint bars needed.
  4. The number of machine bolts and spring washers.
  5. A list of accessories that may be needed.

What is bay length in EOT crane?

1. Scope: Design, manufacture, Erection, Commissioning, Trial run and supply of 3 TON capacity electrically operated overhead travelling crane conforming to IS: 807, 3177 & 3938 tested to 25% overload with a span 18 meters, Lift 7.5 meters and bay length 28 meters and as per the detailed specifications in the annexure.

What is a crane hook height?

The hook height represents the required dimensions from the crane hook to the floor when the crane hook is at its highest position. This vital measurement determines how high the runway must be from the floor and directly related to the clear interior height of the building or structure.

What is CT and LT in crane?

LT motion : Long Travel Motion. CT motion : Cross Travel Motion. Bridge : the structural portion on which the trolley/crab moves. LT End carriage : Structure which houses Long Travel Wheels. CT End carriage : Structure which houses Cross Travel Wheels.

What is the most important part of a crane?

The Hook This may be one of the most recognizable and important parts of a construction crane. The hook is the main connecting point between the crane and the load it needs to carry.

How far can a 70 ton crane reach?

This crane is rated for up to 70 tons with a main boom capable of extending to a maximum of 115′ with an operating radius of up to 110′. The Link-Belt TC 8670 is also equipped with a second high speed auxiliary line.

How far can a 30 ton crane reach?

Terex RT230 (30-ton) The Terex RT230 Rough Terrain crane has a maximum lift capacity of 30 tons and a four-section full-power mechanically synchronized telescoping boom with a maximum length of 94 feet.

How much can a 40 ton crane lift?

80,000 lb
Hydraulic truck cranes vary in lifting power. It’s easy to tell how much a particular hydraulic truck crane can lift just by the name of it: A 40-ton crane can lift 40 tons (80,000 lb or 36,287 kg).

What is crane skewing?

Overhead crane skewing is when the bridge is not perfectly perpendicular to the runway. It can be caused by a variety of conditions and must be fixed before operations begin.