Top Running Double Girder Crane

Top Running Double Girder Crane

 

Electromagnetic bridge cranes, also known as electromagnetic overhead cranes, are material handling cranes that use an electromagnetic force to lift and move heavy loads. The electromagnetic force is generated by an electromagnet that is powered by an electrical current. cranes have several characteristics that make They are an excellent choice for heavy material handling in various applications.

 

The electromagnetic crane can generate a strong magnetic field. It can easily collect and transport dozens of tons of iron sheets, iron wires, iron nails, scrap iron and other iron materials without packing or tying them. The operation is labor-saving and the work is simplified. Steel materials and machinery packed in wooden crates can be handled similarly.

 

When the crane is working, as long as the current in the electromagnet coil continues, the picked up heavy objects will not fall. The invisible magnetic force is more reliable than a strong chain. If the power is cut off for some reason, an accident will occur. Therefore, some electromagnetic cranes are equipped with steel claws. After the heavy objects being transported are lifted, the strong steel claws will automatically fall down and hold them tightly.

 

Cranes cannot carry hot iron because hot steel cannot be magnetized.

 

 

Main parameters of electromagnet selection

 

Customers need to consider the following technical parameters when selecting or customizing the required electromagnet:

1. Shape: The maximum size that can be accommodated at the position where the electromagnet is installed: length; width; height,

2. The maximum stroke of the electromagnet and its suction force requirements, and the reset force requirements after power failure

3. The maximum voltage of the power supply provided to the electromagnet; current? Voltage stability, AC/DC power supply, can it provide positive and negative pulse power?

4. Whether the electromagnet needs to work continuously for a long time; intermittent work, the longest energization time each time and the shortest interval between two energizations;

 

Lifting Weight(t)			5		10			16
Span(m)			Customized
Max. Lifting Height(m)			16		16			16
Speed (m/min)	Hoisting	Electromagnetic	15.6		13			13
	Travelling of Crab		39.5		43.8			44.5
	Travelling of Trolley		92.7	93.7	92.7	93.7	86.4	76	89
Working Class			A5-A8
Electric Current			Three-phase AC 380V 50Hz or Customized

 

5. The purpose of the electromagnet, the special requirements of the environment where the electromagnet is used, such as temperature; humidity; shock; vibration; acceleration, etc.
 

Electromagnetic top running double girder cranes are heavy-duty cranes that are widely used in various industrial settings to lift and transport heavy loads. These cranes are equipped with powerful magnets that can attract and lift ferromagnetic materials such as iron, steel, nickel, and cobalt .

 

Electromagnetic cranes are mainly divided into

 

1. Disk electromagnet crane - mainly used for transporting small pieces of ferrous metal such as scrap.

 

2. Electromagnetic girder crane - divided into two types: fixed electromagnetic girder crane (referred to as electromagnetic girder crane) and rotary electromagnetic girder crane.

 

Fixed electromagnetic hanging beam crane: means that the direction of the hanging beam is fixed relative to the main beam. The hanging beam can be perpendicular to the main beam or parallel to the main beam.

 

There are three types of rotation of the rotating hanging beam: upper trolley rotation, middle trolley rotation, and lower hanging beam rotation.

 

Upper trolley rotation: It is a relatively old-fashioned structure. Its advantage is that the upper limit of electromagnetic disk lifting is small; its disadvantage is that the size from the rail surface of the large trolley to the highest point of the crane is large and the manufacturing process is cumbersome.

 

Lower hanging beam rotation: It is one of the rotation modes. Its advantage is that the size from the rail surface of the large car to the highest point of the crane is small; its disadvantage is that the upper limit of the electromagnetic disk hoisting is large.

 

Middle car rotation: It is a rotation mode that has emerged internationally in recent years. The advantage is that not only the upper limit of the electromagnetic disk lifting is small, but also the size from the rail surface of the large car to the highest point of the crane is small. It has the same advantages of the upper and lower car rotations, and the whole vehicle is lighter in weight and simpler to manufacture. It is currently the most used. 

 

Some of the most common environments that use electromagnetic bridge cranes include:

 

① Manufacturing Industry: Electromagnetic double girder cranes are widely used in the manufacturing industry to move heavy materials and machinery from one location to another. These cranes are often found in factories and warehouses where they help to optimize workflow and impro ve efficiency.

② Construction Industry: Electromagnetic top running double girder cranes are also useful in the construction industry, where they are used to lift heavy materials such as steel beams, concrete slabs, and building components.

③ Mining Industry: In the mining industry, electromagnetic overhead cranes are used to lift and transport heavy loads of ore and other minerals.

④ Shipbuilding Industry: Electromagnetic double girder overhead cranes are also common in the shipbuilding industry, where they are used to lift heavy ship components and materials. These cranes are essential in shipyards, where they help to build and repair large vessels.

⑤ Recycling Industry: The recycling industry also uses electromagnetic bridge cranes to sort and transport large amounts of scrap metal and other materials. These cranes help to streamline the recycling process and reduce the amount of waste going to landfills.

 

The method to prevent the lifting electromagnet hook from shaking back and forth

 

The electromagnet is often used in the factory to collect and carry some scrap iron. During the working process of the lifting electromagnet, our staff must carefully operate the equipment, because the hook of the lifting electromagnet It is a hanging pendulum, and it is easy to shake back and forth. Let's take a look at the method to prevent the hook of the lifting solenoid from shaking back and forth.

1. To prevent the hoisting electromagnet hook from swinging, the driver must abide by the operating procedures, position correctly during lifting operations, start the car at a slow speed step by step when starting the car, and adjust the brakes of large and small cars properly. Stable, stable parking, and short rope buckles should be selected for lifting light items. Taking the above measures, the swing of the lifting electromagnet hook and objects can be prevented enough.

2. Elimination of swinging of the hook - Stabilizing the hook: When swinging has occurred due to improper operation of the lifting electromagnet, the method of "following the car" should be adopted to eliminate the swinging.
 

For example, when the hook swings in the same direction, when the swing has not reached the maximum value, the car body is suddenly accelerated in the same direction, so as to force the hook to stop wandering and be in the lead position.

The horizontal progress of the hook is similar or equal, and the relative speed between the two is almost equal to zero, and the hook can be stabilized.

3. Driving the large cart to "follow the car" can eliminate horizontal swing; driving the small cart "toe cart" can eliminate vertical swing, and driving both large and small carts to "follow the car" can eliminate oblique swing.

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