Rs EOTGRAB CRANE

EOT crane stands for electric overhead traveling crane. This is the most commonly used crane for lifting and shifting heavy loads. These cranes are electrically powered and operated by a control pendant, radio/IR remote pendant, or an operator cabin attached with the crane itself. These cranes have the capacity to lift both heavy and light weights. It is also known as bridge cranes as it consists of a parallel runway connected with a traveling bridge. The hoist is mounted on the traveling bridge. It has three functional movements- Crane Hook Up and Down Lifting, Trolley Lateral Movement, and Crane Long Traveling Longitudinal Motion.

The single girder EOT cranes have the following features-

• It is capable of lifting 20 tons of loads.
• It is more suitable for lifting light objects.
• It has a compact construction, which minimizes the building load.
• It consists of only one main bridge.
• It reduces the total crane cost comparatively on components, building, and runway structure.

The single girder EOT cranes can be used if the following conditions are met.

• The lifting capacity should be between 15-50 feet.
• It should have a long moving speed of 200fpm.
• It should have a hoisting speed of 10-60 fpm.
• It should have a crossing speed of 100 fpm.

The double girder crane has two girders with two trolleys and hoists that run along the axis of the beam. These cranes have a platform on both sides. It has a crab mechanism that runs along both the girders. These are used generally for maintenance purposes. It consists of foot mounted motors and horizontal gearboxes. It can be operated by the push-button pendant, radio remote control, and operating cabin mode, unlike the single girder, which cannot be operated by the cabin. In this type of EOT crane, there are two types of limit switches. One is the rotary limit switch used to calculate the hook traveling and controls the upward and downward movements. It also has an additional switch known as the gravity limit switch, which is used for securing the limit switch working. The double girder EOT crane has an eight-wheel arrangement that is easy to maintain.

The salient features of double girder EOT cranes are-

• It is designed for lifting heavy-load materials and objects.
• It has a lifting capacity of up to 250 tons.
• It is cost-effective as compared to a single girder EOT crane.
• It is more robust and sturdy because it has two girders.
• It comes with alloy steel, hardened, precision-cut gears.
• It can be utilized at any capacity, even if a high hook lift is required.

The single girder EOT cranes can be used if the following conditions are met.

• The lifting capacity should be between 15-50 feet.
• It should have a long moving speed of 350fpm.
• It should have a hoisting speed of 60 fpm.
• It should have a crossing speed of 150 fpm.