· A single girder crane has only one bridge beam, and the hoist trolley operates or travels on the lower flange of the bridge girder. · A double girder crane will have two bridge beams, and the hoist trolley travels on rails, usually attached to the tops of the crane girder.
What is girder in EOT crane?
The EOT Crane moves over the rails placed on the top of crane runway or Gantry Girders. The crane mainly comprise of bridge girder made from rolled sections such as I beams / U beams or fabricated box section. The bridge girder is supported on two end carriages, each housing a pair of wheels.
What is the end of a crane called?
JIB CRANE – A crane design whereby the bridge girder (commonly called the boom) is fixed at one end, allowing the opposite end to cantilever. The fixed end generally is hinged to allow rotation. LIFT – Maximum safe vertical distance through which the hook, magnet, or bucket can move.
What is meant by HOT cranes?
Here, the HOT in HOT Cranes stands for Hoist One Track. HOTs are a stationary overhead crane and allow for lateral movement across two planes as well. They are less common as compared to EOT crane as they do not allow for as much movement as the EOT cranes. They are more commonly used for maintenance purposes.
Which crane consists of bridge constructed girders supporting a Travelling hoist?
An overhead crane, commonly called a bridge crane, is a type of crane found in industrial environments. An overhead crane consists of parallel runways with a traveling bridge spanning the gap. A hoist, the lifting component of a crane, travels along the bridge.
What is full form of EOT crane?
Electric overhead traveling 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 traveling bridge spanning the gap.
How many types of EOT crane are there?
There are various types of EOT (electric overhead travel) cranes 1. Single Girder EOT Crane 2. Double Girder EOT Crane Single Girder EOT Crane – Sparkline manufactures and supplies a wide range of single girder EOT cranes in various configurations according to customer requirements.
Who can operate a crane?
Operators of most cranes above 2,000 lb. capacity when used in construction will need to be either certified by an accredited crane operator testing organization, such as the National Commission for the Certification of Crane Operators (NCCCO), or qualified through an audited employer program [§ 1926.1427(a)].
How much does a crane cost?
Mobile Crane ($125,000 – $525,000+) – A common type of crane that is transportable, but may have limited range compared to the telescopic crane.
What is two blocking a crane?
Two-blocking occurs when the operator extends the boom on a crane without letting out sufficient slack in the cable. As a result, the stabilizing weight, called the headache ball, will be popped off by the extending boom.
What are the three functions of a crane?
The main purpose of a crane is to lift extremely heavy amounts of weight. A typical crane is equipped with a hoist rope, wire ropes or chains and sheaves.
Modern day cranes are used for:
- Construction Materials.
- Railroad Tracks.
- Shipping Materials/Equipment.
- Scrap Metal.
- Mobile Homes.
5 нояб. 2015 г.
What are the type of cranes?
There are several different types of mobile cranes, including:
- Carry Deck Crane. …
- Crawler Crane. …
- Floating Crane. …
- Rough Terrain Crane. …
- Truck-mounted Crane. …
- Bulk-handling Crane. …
- Hammerhead Crane. …
- Stacker Crane.
17 окт. 2019 г.
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.
What is the purpose of overhead crane?
To move extremely heavy or bulky loads through the overhead space in a facility, instead of through aisles or on the floor, an overhead crane (also called an industrial crane, crane, or overhead traveling crane is a machine that lifts, lowers and moves a load horizontally.
What are the three major components of a typical overhead crane system?
Category 2 and 3 Crane Components The principal parts of overhead traveling cranes are: bridge girders, end trucks, trolley with hoisting mechanism, and operator’s cab or pendant control.
How do you make an overhead crane?
Design Guide for Overhead Cranes
- A traveling base with a traveling rail on either side. …
- The End carriage on both sides which houses the wheel for the crane movement and also supports the top girder. …
- The Top Girder provides the side movement of the hoist and trolley.
29 мар. 2010 г.