What are the three basic types of overhead cranes?
TYPES OF OVERHEAD CRANES
- Under Running Overhead Crane. The bridge of an underhung or under running overhead crane is engineered to travel on the bottom flange of a runway beam.
- Single Girder Bridge Crane.
- Double Girder Bridge Crane.
What is LT and CT 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.
Why is it called a portal crane?
Gantry cranes (they are also called Portal Cranes, the “portal” being the empty space straddled by the gantry) are a type of crane used to straddle an object or workspace and the entire crane can be moved about a workspace.
How many types of EOT cranes are there?
two types
There are mainly two types of EOT cranes- single girder EOT and double girder EOT.
What is a fixed crane?
Fixed cranes, as it name implies, are fixed to the ground, providing a stable support and best combination of lifting and height capacity. Contrary to mobile cranes, fixed cranes exchange mobility for ability to lift larger loads and reach greater heights due to their better stability.
What is difference between overhead and gantry crane?
What is the main difference between a gantry crane and an overhead crane? An overhead crane, often referred to as a bridge crane is shaped like a moveable bridge whereas a gantry crane has an overhead bridge supported with it’s own frame.
Is EOT crane code?
IPSS : 2-02-003-18 General code of practice for design of EOT cranes (Mechanical aspects). 36. IPSS : 2-02-004-18 General code of practice for design of EOT cranes (Electrical aspects).
What is MH in crane?
MH Type Single Girder Gantry Crane (Truss-type) truss crane adopts model CD, MD, and other electric hoists, which are composed of metal structure, cart operating mechanism, electric device and trolley.It can has cantilevers, the crane can load the goods t. Lifting capacity: 3.2-32tons.
What is a monorail crane?
A monorail crane system is a stationary, overhead track on which trolleys travel to carry loads from one place to another in a facility. Monorail cranes are an ideal solution for linear, overhead material handling due to the fact that they enhance production workflow and create a safe and secure work environment.
Why is it called gantry crane?
A gantry crane is a crane built atop a gantry, which is a structure used to straddle an object or workspace. They can range from enormous “full” gantry cranes, capable of lifting some of the heaviest loads in the world, to small shop cranes, used for tasks such as lifting automobile engines out of vehicles.
What SWL means?
Safe Working Load
The Wikipedia definition of SWL is: Safe Working Load (SWL) sometimes stated as the Normal Working Load (NWL) is the mass or force that a piece of lifting equipment, lifting device or accessory can safely use to lift, suspend, or lower a mass without fear of breaking.
What does SWL mean?
Safe Working Load (SWL) sometimes stated as the Normal Working Load (NWL) is the maximum safe force that a piece of lifting equipment, lifting device or accessory can exert to lift, suspend, or lower, a given mass without fear of breaking. Usually marked on the equipment by the manufacturer.
What are the main types of cranes?
These crane types are set in place for the duration of a project.
- Bridge/Overhead Crane. The bridge crane, also known as an overhead crane, are typically found in industrial environments.
- Bulk-handling Crane.
- Hammerhead Crane.
- Stacker Crane.
- Telescopic Crane.
- Tower Crane.
What is the difference between fixed crane and mobile crane?
The biggest difference between mobile cranes and tower or fixed cranes is their mobility. As their names suggest, fixed cranes are fixed to a single spot once they have been setup. Whereas, mobile cranes can be moved as needed. The mobility of a mobile crane holds many advantages for any construction site.
Why is it called a gantry crane?
What is the other name of overhead crane?
An overhead crane, commonly called a bridge crane, is a type of crane found in industrial environments.
What is creep speed of EOT crane?
CREEP SPEED: A very slow, constant, continuous, fixed rate of motion of the hoist, trolley, or bridge: usually established at 1% to 10% of the normal full load speed.
Is code for lifting?
Electric passenger and goods lifts IS CODE: 1860, 3534, 6620. Inspection of lift wire ropes IS CODE: 8216. Hand operated chain pulley blocks IS CODE: 3832.
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 is the full form of EOT?
Electric Overhead Traveling
The Electric Overhead Travel (EOT) crane is an electrically operated machine for lifting, lowering, and transporting loads, consisting of a movable bridge with a fixed or movable hoisting mechanism and traveling over an overhead runway structure. Note – Image is just for reference.
How does EOT crane work?
The EOT crane works by using electricity and it can be operated with the help of either the driver or the pendant (remote control). The crane is capable of lifting up to 500 tonnes with a span of 60 meters. The universal coupling mechanism is incorporated in these cranes to facilitate both installation and adjustment.
What is the difference between a bridge and a gantry crane?
An overhead crane, often referred to as a bridge crane is shaped like a moveable bridge whereas a gantry crane has an overhead bridge supported with it’s own frame. Bridge cranes are attached to the interior structure of a building and are mounted onto the girders that support the roof and walls of the building.
What is the difference between gantry crane and overhead crane?
What is WLL in crane?
Working Load Limit (WLL) is the maximum working load designed by the manufacturer. This load represents a force that is much less than that required to make the lifting equipment fail or yield. The WLL is calculated by dividing MBL by a safety factor (SF).
What is WLL rating?
WLL refers to the maximum allowed weight that a piece of rigging can handle under normal conditions. For instance, a winch strap with a WLL of 6,000 pounds should not be used to secure any load above that weight, as it exceeds what it is rated for.