Electromagnetic Overhead Crane Sold to Russia

A customer from Russia contacted us looking for a crane solution for the steel industry. They mainly produce thick steel plates, sections and billets, and need to move a large number of steel products every day, which are irregular in shape and have strict requirements for handling efficiency. In order to improve handling efficiency, they wanted to purchase a new electromagnetic bridge crane.

Challenges of Customer Installation Sites

During the communication process, there were a number of constraints at the customer's application site that posed some challenges for the lifting solution.

1. Extreme climatic conditions
   The customer's plant is indoors, but the long Russian winters and frequent opening and closing of the workshop doors result in indoor temperatures sometimes as low as -25°C to -30°C. The customer's plant is located in the heart of the Russian Federation. Electrical components, cables and lubricants in ordinary cranes are prone to failure at these low temperatures and must be designed to withstand low temperatures.
2. High dust and high temperature working conditions
   There is a large amount of iron oxide dust and heat radiation in the steel plant. The temperature of steel plate can still be up to 200-300℃ when it comes off the line, and the lack of heat resistance of common electromagnet will lead to magnetic decay or even demagnetization. At the same time, dust can easily invade the motor, resistance box and control system, increasing the failure rate.
3. Materials of various shapes and shapes, difficult to handle
   The materials that customers need to handle include: single steel plates (thickness 6-50mm), bundles of billets, and cut edge scrap. Ordinary electromagnet on different shapes and thickness of the material suction force varies greatly, easy to suck or suck unstable problem. In addition, the scrap area needs stronger penetration to suck up cluttered piles of scrap.
4. High lifting capacity requirements
   The heaviest billet piece is close to 19 tons, plus the self-weight of the electromagnetic suction cups, the customer requires the rated lifting capacity to reach 20 tons, and requires the working class to reach A7 (Heavy Duty Class), to meet the needs of more than 20 hours a day of continuous operation.

Our Solution

In response to these challenges, we customized a 20 ton electromagnetic bridge crane with the following key design:

• ➢Low-temperature resistant full configuration
  All electrical components, cables, limit switches are -35 ℃ low-temperature resistant type, reducer lubricant selection of fully synthetic low-temperature oil, to ensure that the start in the cold environment smooth, reliable operation.
• ➢High-temperature electromagnetic suction cup
  Electromagnetic suction cup adopts high-temperature coil and special heat-insulating structure, which can suction high-temperature steel, and has strong magnetic penetration, which can suck single steel plate smoothly, and also can grab messy scrap steel effectively. At the same time, the system is equipped with a Loss of magnetism protection device, which can maintain suction for 15 minutes in case of an accidental power failure to ensure the safe lowering of heavy objects.
• ➢Totally enclosed dustproof design
  The crane drive motor, electrical control cabinet adopts IP54 or above protection level, and increase sealing strip and positive pressure ventilation (optional), effectively isolate the dust intrusion. The control cable of the electromagnetic chuck is made of special flat cable which is wear-resistant, high temperature-resistant and oil-resistant.
• ➢Remote monitoring and safety protection
  We have added a remote monitoring module for our customers, which can real-time view the crane's work cycle number, motor temperature, electromagnetic suction cup current and other parameters, and support failure warning. In addition, overload protection, emergency braking, and anti-sway assist functions are all available, greatly enhancing operational safety.
• ➢Modular customized structure
  Based on the actual span (22.5m) and lifting height (12m) of the customer's plant, we optimized the design of the main beams and end beams to reduce the deadweight without decreasing the stiffness, and at the same time retained the interfaces for future retrofitting of automatic positioning systems.

Yuantai Electromagnetic Overhead Crane