“The low-speed, high-torque rare earth permanent magnet motor we have developed and manufactured is a revolution in traditional asynchronous motors. Unlike the rotor of traditional asynchronous motors, which requires electrical excitation to generate a magnetic field, this motor directly installs rare earth permanent magnets in the rotor part, which can provide a constant source of magnetic power for the rotor. In the power    The speed reduction gear is eliminated in the output section, so that the motor and the load are directly connected, reducing energy loss. This motor has the advantages of simple structure, high efficiency, and stable performance.” On May 8, Zhang Xiugui, deputy general manager of Hebei Kuancheng Manchu Autonomous County Shengqian Special Motor Manufacturing Co., Ltd., told reporters.

Staff are grinding the huge motor stator

This is an enterprise founded in 2002 specializing in repairing motors. With the development of the economy and society and the growing needs of the enterprise, and in order to adapt to the national trend of vigorously promoting energy conservation and emission reduction, in 2013, the enterprise set its sights on the research and manufacture of high-efficiency permanent magnet motors, and established Shengqian Special Motor Manufacturing Co., Ltd. "In the past, the high-power motors used in many mines and building materials industries generally had the disadvantages of large size, high energy consumption, and low efficiency. In order to develop and manufacture permanent magnet motors with small size, good performance, energy saving and low consumption, the company leader led a team to inspect all over the country, and hired experts from universities and colleges to guide the research and development. Finally, the company decided to take the road of developing high-efficiency permanent magnet motors." Zhang Xiugui introduced the development process of the company's transformation and upgrading, while leading reporters to the production workshop to learn about the situation.

Staff are meticulously connecting the motor's wiring

In the company's production workshop, the reporter saw several workers busily working around a metal rotor that was more than one meter in diameter and weighed 3 tons. They pushed the specially made rare earth permanent magnets one by one into the rotor's slots using aluminum strips. The motor being made is their new product and also their main product - the rare earth permanent magnet motor.   . "This rare earth permanent magnet motor is entirely developed and manufactured by ourselves. It directly uses rare earth permanent magnets on the rotor, which simplifies the internal structure of the motor and improves the motor's efficiency and power factor and other power indicators." Liu Yuanzhang, the enterprise's technical director, told reporters at the scene that in the power transmission process, changing "multi-stage transmission" to "direct drive" not only greatly reduces the loss of power in the transmission process, but also reduces the installation space and saves maintenance costs. At the same time, the use of intelligent variable frequency control technology on the motor can control the motor speed according to production and equipment needs, thereby maximizing the motor torque.

Because the rare earth magnets embedded in the motor rotor have high magnetism, staff need to wear special protective gloves for each operation

"A mine in Chengde City, Luanping County, previously used asynchronous motors for its equipment. Due to overloading during production, the motors were burned out twice. After introducing our rare earth permanent magnet motors, the motors never stopped due to overloading again. Once, due to excessive overloading, the machinery was damaged, but our motors were unharmed." Sales Director Weng Jianli told reporters about the interesting stories in their sales. Our motors are all custom-made, and can be customized with various different speeds and torques according to customer needs to adapt to various production situations and different specifications and sizes of motors. Because of its significant characteristics such as low speed, high torque, energy saving and low consumption, it is very popular among customers, and there are orders all over the country, and it is also sold to countries and regions in Central and Eastern Europe and Africa. In Chengde Tianbao Mining Group Co., Ltd. In the use of Shandong Xinhai Mining Technology Equipment Co., Ltd. and many other enterprises, the power saving monitoring shows that under the same working conditions, compared with the traditional asynchronous motors they used before, the average power saving rate of rare earth permanent magnet motors can reach more than 15%, and the highest power saving rate can reach 30%.

The assembly of the motor rotor requires the cooperation of multiple people to complete

By the end of 2023, the rare earth permanent magnet motor manufactured by the company has passed the national energy-saving certification and has been included in the national power supply-side directory. With its advantages of energy saving and consumption reduction, the product was selected into the "Hebei Province Low-Carbon Technology Promotion Directory" in 2021, and the "Permanent Magnet Direct Drive Motor for Flotation Machine" technology achievement was recognized as "international leading" by the Hebei Provincial Department of Science and Technology. The company has been named a "specialized, refined, and new" small and medium-sized enterprise, etc.

"The motor is called the 'heart' of modern industrial machinery, providing power for various mechanical equipment. Our direction of effort is to manufacture motors that provide eternal power for the country's modern industrial machinery by vigorously implementing technological innovation and talent cultivation." Zhang Xiugui stated the company's determination in the development process of new quality productivity.  

Source of this article:    He   Bei Worker News Reporter/Song Baojun Yang Leitao Photography/Editing Yang Leitao     Please inform us to delete if there is any infringement