OVERHEAD CRANE,OVER MY HEAD

Overhead crane types

In this post i want to tell you about some type of Overhead Crane who most popular among industries

1. Top Running Single Girder Crane & Double Girder Crane
Overhead Girder Crane is one type of indoor crane with columns supporting part of the vertical load that can lift objects or goods with a hoist mounted in a position hanging on a moving girder horizontally. This type of Crane is suitable for use in the construction industry, ports, factories, and other industries to improve the performance and effectiveness of operations & used in heavier applications.

Single Girder Crane

For heavier duty you must considered to use double girder crane. This is often a superior style for significant applications like steel service centers, concrete facilities, foundries, and region to call a couple of.

2 . Under Running Crane
Under running crane is usually use for lighter duty than top running crane. This is because it all running on surface for the crane and trolley hoist are on the bottom flange of the beams and premature wear can occur with heavy duty cycles.


Under Running Crane Single Girder

3. Gantry Crane
Gantry cranes will solve varied problems after you area unit restricted in building structure. they will be provided in varied configurations and might run on one runway with the other finish running on the ground, or be utterly freelance of your building. Some need special track or ASCE rail, and a few will run on the ground trackless. Configurations embody single beam and double beam.

Picture of Gantry Crane Ellsen Manufacture

Advantages embody being freelance from building structure in some configurations with disadvantages together with moving legs on your workplace, and not as mobile or quick as a crane on 2 runways.

4. Jib Crane
A jib crane could be a reasonably crane that utilizes a mounted arm in lifting, moving and lowering materials. The arm, that is mounted at AN acute-angle upwards from or perpendicular to a wall or pillar, will rotate on the central axis for a full circle or a restricted arc. These cranes square measure sometimes employed in industrial sectors, like docks and warehouses, in loading and unloading shipping containers.

Picture of Jib Crane form Abus Manufacture

DEFINITION OF CHAIN HOIST

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A hoist is a device used to lift or lower the load attached to it by means of a raised wheel or a drum.
Load lifting is done by a rope or wire around the wheel or drum. Wheels or drums may use electricity for operation or in some cases may also be operated manually (chain block). In addition to drums and wires, the other integral part of the hoist is the lifting medium used.
Other media for different lifting used are chain, fiber or wire rope. The hook is also available where the load is attached.

Some type of Chain Hoist

One of the most commonly used types around the world is the Chain Hoist. The commonly used type is electrically operated.
In this case the hoist type, the chain used as a lifting medium. Here is a closed chain that forms a circle that eventually lifts weights. Pulleys are also attached with a hoist for lifting weights. A number of small and large pulleys are found in a chain hoist.

This is chain hoist type DC Pro from Demag manufacture

To increase the load, the chain must be drawn. When drawn, the large pulley attracts more chains than what is required by the smaller side facilitating the beginning of the lifting procedure.

The work of a Chain hoist can be understood from the following:

Use gears to multiply strength.

A Chain hoist, when operated by hand, requires the operator to pull a small circle chain next to it. This turns the internal gear mechanism to change the pulley chains

When this pulley changes, it creates a heavy chain which usually has a hook at the end going up / down.

By pulling a small circle chain, the manual hoist is actually capable of increasing the strength being charged by the heavy chain. This is due to the gear ratio in the manual chain hoist.

The mechanical work performed by the operator is the same as the work done by heavy lifting chains

HOIST

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Hoists is industrial equipments used for the method of lifting or lowering significant weight objects. These hoists area unit popularly seen in construction or industrial sites wherever significant weight objects ought to be upraised and captive from one place to the opposite. Hoists play a really vital role in varied significant weight industries by principally victimization an electrical chain or a wire rope to elevate objects.

Earlier, hoists would be operated by hand with the assistance of blocks and tackle, or perhaps with the assistance of pulley-block systems. These days, electrical hoists area unit very fashionable. These hoists area unit typically accustomed elevate and lower objects vertically. but they will even be mounted on a trave that enables them to maneuver in an exceedingly horizontal direction thereby increasing their advantage to a good extent. electrical hoists may be controlled with the assistance of a distant switch, thereby rising the protection and capability of this device.

The development of the engine improved and boosted the facility of the hoists manifold. The engine gave a motor to the hoist, so thickening the facility of the hoist. The harnessing of electricity for domestic and industrial use gave hoists unexampled power. Currently, hoists area unit capable of lifting terribly significant masses. Smaller hoists area unit by choice designed for lifting lighter masses up to some hundred kilograms, however industrial capability hoists will elevate up masses up to many hundred tons.

There area unit principally 2 varieties of electrical hoists particularly electrical chain hoists and wire rope hoists out there on the market. the previous uses chains to elevate up masses whereas the latter utilizes wire ropes to elevate up masses. each varieties of hoists area unit desirable for lifting up masses, but in some circumstances the wire rope hoist is most well-liked.

Choose a hoist that may last long. additionally make sure that it'll give reliable and strong service. it is a smart plan to visualize if the hoist meets the statutory and industrial laws for lifting significant masses and meets alternative necessary safety parameters. If you're finding it troublesome to buy a hoist, then you'll research industrial catalogs and hardware stores. At constant time, variety of acknowledged makers sell directly over the web. With some expertise, you'll certainly be ready to devour the correct variety of hoist for your needs.

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INTRODUCTION

Hello this is my first blog ever & im so excited to writing or gaining my writting skill but i dont know what should i write before, but now im full of idea & ready to begin my journey in bloging so i want to tell you,share you & guide you about OVERHEAD CRANE,,,,

What is that? what is overhead crane? never heard of this before ? ya ya ya i know is strange for you right?

let me tell you overhead crane is a machine..ee..aa...something..eee hanging.... over your head... bloodyhell im not good to describe it,,,,cant someone help me?

Oh yeah i know i can google it hehehe

According to Wikipedia 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. If the bridge is rigidly supported on two or more legs running on a fixed rail at ground level, the crane is called a gantry crane (USA, ASME B30 series) or a goliath crane (UK, BS 466).

Unlike mobile or construction cranes, overhead cranes are typically used for either manufacturing or maintenance applications, where efficiency or downtime are critical factors.

History

In 1876 Sampson Moore in England designed and supplied the first ever electric overhead crane, which was used to hoist guns at the Royal Arsenal in Woolwich, London.^[1] Since that time Alliance Machine, now defunct, holds an AISE citation for one of the earliest cranes in the USA market. This crane was in service until approximately 1980, and is now in a museum in Birmingham, Alabama. Over the years important innovations, such as the Weston load brake (which is now rare) and the wire rope hoist (which is still popular), have come and gone. The original hoist contained components mated together in what is now called the built-up style hoist. These built up hoists are used for heavy-duty applications such as steel coil handling and for users desiring long life and better durability. They also provide for easier maintenance. Now many hoists are package hoists, built as one unit in a single housing, generally designed for ten-year life, but the life calculation is based on an industry standard when calculating actual life. See the Hoists Manufacturers Institute site^[2] for true life calculation which is based on load and hours used. In today's modern world for the North American market there are a few governing bodies for the industry. The Overhead Alliance is a group that represents Crane Manufacturers Association of America (CMAA), Hoist Manufacturers Institute (HMI), and Monorail Manufacturers Association (MMA). These product counsels of the Material Handling Industry of America have joined forces to create promotional materials to raise the awareness of the benefits to overhead lifting. The members of this group are marketing representatives of the member companies.

EOT (Electric Overhead Traveling) Crane

This is most common type of overhead crane, found in many factories. These cranes are electrically operated by a control pendant, radio/IR remote pendant, or from an operator cabin attached to the crane.

Rotary overhead crane

This type of overhead crane has one end of the bridge mounted on a fixed pivot and the other end carried on an annular track; the bridge traverses the circular area beneath. This offers improvement over a jib crane by making possible a longer reach and eliminating lateral strains on the building walls.^[5]

Applications

Overhead cranes are commonly used in the refinement of steel and other metals such as copper and aluminium. At every step of the manufacturing process, until it leaves a factory as a finished product, metal is handled by an overhead crane. Raw materials are poured into a furnace by crane, hot metal is then rolled to specific thickness and tempered or annealed, and then stored by an overhead crane for cooling, the finished coils are lifted and loaded onto trucks and trains by overhead crane, and the fabricator or stamper uses an overhead crane to handle the steel in his factory. The automobile industry uses overhead cranes to handle raw materials. Smaller workstation cranes, such as jib cranes or gantry cranes, handle lighter loads in a work area, such as CNC mill or saw.
Almost all paper mills use bridge cranes for regular maintenance needing removal of heavy press rolls and other equipment. The bridge cranes are used in the initial construction of paper machines because they make it easier to install the heavy cast iron paper drying drums and other massive equipment, some weighing as much as 70 tons.
In many instances the cost of a bridge crane can be largely offset with savings from not renting mobile cranes in the construction of a facility that uses a lot of heavy process equipment.

So thats the short describe about overhead crane (Thanks wikipedia you to make my life so easy😢)