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advantages of electromagnetic crane

You will be able to drastically improve the workflow that you take advantage of when you get your hands on an electromagnet overhead crane. Your work will by quicker and you will have less injuries on the jobsite. You also be able to keep your profit margins in line because it would take far less manpower to get the work done.

Electromagnetic power transmission is already a reality on a small scale. Joshua R. Smith, an Intel researcher in Seattle, has developed a device that collects power from ambient RF signals. These signals from radio and television broadcasts largely go to waste. The air is full of these signals. Only a small percent of the energy goes into activating the antennas of interested receivers--the rest goes into trees, houses, the ground or into outer space. Enough of this ambient energy already exists to power a large handheld calculator or an iPhone.

The wireless transmission of electrical power is an idea that goes back to at least the early part of the 20th century. Nikola Tesla (a contemporary of Thomas Edison) worked on the project and discovered the chief disadvantage: It is not easy to achieve. This challenge remains the major disadvantage. Even if it was easy, there is another disadvantage that worries many people: is it safe. Most researchers have concluded that Radio Frequency (RF) waves--the proposed means of transmission--are completely safe and that RF has no affect on living tissue. Not everybody agrees.

Since that time, scientists have sought to test and measure electromagnetic fields, and to recreate them. Towards this end, they created electromagnets, a device that uses electrical current to induce a magnetic field. And since their initial invention as a scientific instrument, electromagnets have gone on to become a regular feature of electronic devices and industrial processes.

Electromagnetism is one of the fundamental forces of the universe, responsible for everything from electric and magnetic fields to light. Originally, scientists believed that magnetism and electricity were separate forces. But by the late 19th century, this view changed, as research demonstrated conclusively that positive and negative electrical charges were governed by one force (i.e. magnetism).

The magnetic strength of an electromagnet depends on the number of turns of wire around the electromagnet's core, the current through the wire and the size of the iron core. Increasing these factors can result in an electromagnet that is much larger and stronger than a natural magnet. For example, there is no known natural magnet that is able to pick up a large steel object such as a car, but industrial electromagnets are capable of such a task.

This type of train usually consists of a set of magnets along the bottom of the train and a series of electromagnets on the tracks or guide-way for the train. The electromagnets are adjusted to have the same polarity as the train's magnets, though complex computer controls. Since the magnetic poles repel, the train is levitated or floats slightly above the track. Guides on the sides prevent the train from sliding off.

One useful characteristic of an electromagnet is the fact that you can vary its magnetic force by changing the amount and direction of the current going through the coils or windings around it. Loudspeakers and tape recorders are devices that apply this effect.

Depending on the position of the train, the polarity of the electromagnets is adjusted, causing the train to move forward. Maglev trains can reach speeds over 260 mile per hour or 430 kilometers per hour.

Lifting magnets are used to move and position ferromagnetic (often steel) work pieces of various shapes and lengths quickly and without damage. A lifting and hoisting magnet saves valuable storage space and time.

Electromagnets employ electricity to charge the magnet and hold the material to the magnet face. Electromagnets use an energized electrical coil wrapped around a steel core to orient particles within ferrous materials in a common direction, thus creating a magnetic field. Electromagnets are generally built to run on DC current, creating the need for a rectifier. Unlike permanent magnets, electromagnets require a constant power source. This can be viewed as either a detriment or an advantage, depending upon how the magnet is being used. A power failure can be catastrophic when using an electromagnet—though universal power supplies and battery backup systems available in today's market address these concerns. On the other hand, the ability to vary the current being supplied to the magnet allows the user more flexibility than a permanent magnet affords.

Both permanent magnets and electromagnets can be constructed to produce different types of magnetic fields. The first consideration in choosing a magnetic circuit is the job you want the magnet to do. Permanent magnets are favored when electricity is not readily available, when power failures are a common occurrence or when adjustable magnetic force is not necessary. Electromagnets are useful for applications where varying strength is required or remote controlling is desired. Magnets should be used only in the manner for which they were originally intended. Using the wrong type of magnet for a specific application can be extremely dangerous and possibly even deadly.

Still, there are times when the part to be machined is thin—0.25 inch or thinner—and the part is presented to the machine operator as one of a stack of similar parts. Permanent magnets are not designed to lift only one piece from the stack at a time. Permanent magnets, while extremely reliable when properly applied, are not able to alter the amount of magnetism produced. In this case, an electromagnet with variable voltage control allows the operator to manage the magnetic strength and select only one piece from the stack.

A trained professional must install the magnet. The supplier will usually send out personnel to evaluate the application and handle the installation process. Electromagnets require greater setup time and additional equipment because of the DC electrical connection. Electromagnets are also outfitted with battery backups in case of power failure.

The advanateg would only be in scrap yards involving the electro-magnetic handling of ferrous-metals. unforutnaely stainless steel is non-magnetic. there are electric cranes which run on bridge-like st ructures but these are not electro-magnetic. these have some tactical advatages of very precise control, solenoid brakes which are electro -magnetic, and safety and low noise. also they do not pollute =these are normally used indoors in factories and warehousesl. they usually have(dead man) controls which revert to neutral or stop if the operator lets go they spring back tothe central positin again aiding safety.

The advanateg would only be in scrap yards involving the electro-magnetic handling of ferrous-metals. unforutnaely stainless steel is non-magnetic. there are electric cranes which run on bridge-like st ructures but these are not electro-magnetic. these have some tactical advatages of very precise control, solenoid brakes which are electro -magnetic, and safety and low noise. also they do not pollute =these are normally used indoors in factories and warehousesl. they usually have(dead man) controls which revert to neutral or stop if the operator lets go they spring back tothe central positin again aiding safety.

The electromagnet contains an iron core with a wire around it, and this wire is the medium by which the current travels. The magnetic strength of an electromagnet relies on the number of turns of the wire around the electromagnet's core, the current through the wire and the size of the iron core. Increasing these elements will result in an electormagnet which is significantly larger and stronger as compared to a natural magnet (which explains the enormous size of the crane's magnet). For the electromagnet to be turned off, the core must be made of soft iron. Therefore, turning on the electricity will enable the magnet to work, and turning off the electricity will be able to shut it down.

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