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A study on the development of a small multi-speed hoisting machine with inverter to be used for improve workability and safety

  • Industry Promotion Research
  • Abbr : IPR
  • 2025, 10(3), pp.111~119
  • DOI : 10.21186/IPR.2025.10.3.111
  • Publisher : Industrial Promotion Institute
  • Research Area : Interdisciplinary Studies > Interdisciplinary Research
  • Received : June 10, 2025
  • Accepted : July 15, 2025
  • Published : July 31, 2025

Young-Ku Sunwoo 1 Byoung-Ki Park 2

1대산이노텍
2호서대학교

Accredited

ABSTRACT

Existing electric hoists have safety issues such as the inability to precisely control speed due to fixed operation methods and frequent load chain deformation due to repeated overwinding. This study focused on the development of multi-speed speed control technology using inverters and enhanced safety devices to overcome these limitations and meet the needs of industrial sites. A 0.5-ton inverter chain hoist was designed, and a teaching pendant using a hall sensor and an inverter-linked control circuit were developed to implement variable speed control according to the pressing strength of the push button. In addition, design improvements were made to increase the cooling efficiency of the motor and regenerative braking resistor and to strengthen the braking force of the brake. The 0.5-ton inverter small chain hoist developed in this study achieved the following results: implementation of a multi-speed control system capable of precise work, improved cooling efficiency, secured an enhanced braking and safety system, and reduced noise. This is expected to greatly improve the efficiency and convenience of handling heavy objects, and contribute greatly to preventing damage to loads and ensuring the safety of workers. In particular, the application of variable speed technology through the linkage of inverters and teaching pendants will play an important role in securing technological competitiveness of small and medium-sized enterprises and enhancing global technological competitiveness.

Citation status

* References for papers published after 2024 are currently being built.