A gantry crane fast-shifting starting buffer speed regulation system and method

CN122233282APending Publication Date: 2026-06-19CHENGXI SHIPYARD

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Applications(China)
Current Assignee / Owner: CHENGXI SHIPYARD
Filing Date: 2026-04-21
Publication Date: 2026-06-19

AI Technical Summary

Technical Problem

The existing gantry crane has problems such as large mechanical impact, serious equipment wear and tear, and high safety hazards when starting in fast gear. Existing improvement solutions are costly, have poor adaptability, and have the risk of frequency conflict.

Method used

By combining a remote control module, a buffer speed regulation module, a closed mutual exclusion module, and a frequency converter module, and through the timing coordination of time relays and contactors, a stepped speed regulation logic is achieved to ensure smooth and shock-free starting, and an independent contact-type electrical interlock structure is used to prevent gear conflict.

Benefits of technology

It achieves low-cost, safe and reliable fast start buffer speed regulation, reduces mechanical and electrical shock, complies with the safety specifications of lifting equipment, has strong adaptability and good operational compatibility.

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Figure CN122233282A_ABST

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Abstract

This invention discloses a fast-start buffer speed regulation system and method for gantry cranes, belonging to the field of electrical control technology for lifting machinery. The system includes a remote control module, a buffer speed regulation module, a frequency converter module, and a drive motor. The remote control module contains a matched remote controller and a remote controller receiver. The buffer speed regulation module includes a delay control unit and a gear execution unit. The delay control unit is connected in parallel across the high-speed gear output contacts of the remote controller receiver. The frequency converter module has at least three sets of digital signal input terminals corresponding to different operating frequencies, respectively corresponding to low speed, buffer medium speed, and high speed gears. This invention achieves fast-start buffer speed regulation by adding only a few standard electrical components, solving the problems of large impact and load swaying caused by direct fast-start in existing gantry cranes. It has low modification costs, simple installation and debugging, and completely eliminates the risk of gear conflict through dual hardware interlocking. It fully complies with the safety specifications for special lifting equipment and can be widely adapted to various types of remote-controlled gantry cranes.

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