EOT Cranes


There are 4 types of EOT Cranes.

Single girder cranes : The crane consists of a single bridge girder supported on two end trucks. It has a trolley hoist mechanism that runs on the bottom flange of the bridge girder.

Double Girder Bridge Cranes : The crane consists of two bridge girders supported on two end trucks. The trolley runs on rails on the top of the bridge girders.

Gantry Cranes : These cranes are essentially the same as the regular overhead cranes except that the bridge for carrying the trolley or trolleys, is rigidly supported on two or more legs running on fixed rails or other runway. These “legs” eliminate the supporting runway and column system and connect to end trucks which run on a rail either embedded in, or laid on top of, the floor.

Monorail : For some applications such as production assembly line or service line, only a trolley hoist is required. The hoisting mechanism is similar to a single girder crane with a difference that the crane doesn’t have a movable bridge and the hoisting trolley runs on a fixed girder. Monorail beams are usually I-beams (tapered beam flanges).

EOT CRANE CONFIGURATION


1) Under Running (U/R)

Under Running or under slung cranes are distinguished by the fact that they are supported from the roof structure and run on the bottom flange of runway girders. Under running cranes are typically available in standard capacities up to 10 tons. Under hung cranes offer excellent side approaches, close headroom and can be supported on runways hung from existing building members if adequate.

Advantagers:

  •  Very small trolley approach dimensions meaning maximum utilization of the building's width and height.
  •  The possibility of using the existing ceiling girder for securing the crane track.

Limitations:

  •  Hook Height - Due to Location of the runway beams, Hook Height is reduced
  •  Roof Load - The load being applied to the roof is greater than that of a top running crane
  •  Lower Flange Loading of runway beams require careful sizing otherwise, you can "peel" the flanges off the beam

2) Top Running (T/R)

The crane bridge travels on top of rails mounted on a runway beam supported by either the building columns or columns specifically engineered for the crane. Top Running Cranes are the most common form of crane design where the crane loads are transmitted to the building columns or free standing structure. These cranes have an advantage of minimum headroom / maximum height of lift.

EOT Crane selection parameters

  •  Lifting Capacity
  •  Lifting Height
  •  Height Under Beam
  •  Adjustability
  •  Work Envelope
  •  Transportation

Our Capabilites

 We manufacture EOT cranes ranging from 2 Tons to 25 Tons capacities as per customer requirements