Patents by Inventor Jiujun WANG

Jiujun WANG has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Apparatus for automatically polishing butt weld of ultralong large-diameter pipeline
    Patent number: 12350786
    Abstract: An apparatus for polishing a butt weld includes a machine frame; a polishing mechanism, including a rotating arm, a supporting column rotatably mounted on the rotating arm, and a polishing roll rotatably mounted on the supporting column in a circumferential direction of the polishing roll; an angle limiting assembly, movably mounted on the rotating arm, the angle limiting assembly limiting an angle at which an outer side end of the supporting column swings upward; a roll driving part, mounted on the rotating arm. The roll driving part is in transmission connection with the polishing roll and drives the polishing roll to rotate on the supporting column in the circumferential direction of the polishing roll. An arm driving part is mounted on a fixed frame, the rotating arm being mounted on the arm driving part, and the arm driving part drives the rotating arm to rotate in a circumferential direction.
    Type: Grant
    Filed: October 17, 2024
    Date of Patent: July 8, 2025
    Assignee: CHINA RAILWAY NO. 3 ENGINEERING GROUP CO., LTD.
    Inventors: Depeng Sun, Yunlong Li, Yufeng Wu, Jianlin Zhang, Haojun Liu, Jiujun Wang, Ning An, Zhiquan Hu, Haimeng Gao, Zhichun Zhang, Lin Li
  • APPARATUS FOR AUTOMATICALLY POLISHING BUTT WELD OF ULTRALONG LARGE-DIAMETER PIPELINE
    Publication number: 20250121473
    Abstract: An apparatus for polishing a butt weld includes a machine frame; a polishing mechanism, including a rotating arm, a supporting column rotatably mounted on the rotating arm, and a polishing roll rotatably mounted on the supporting column in a circumferential direction of the polishing roll; an angle limiting assembly, movably mounted on the rotating arm, the angle limiting assembly limiting an angle at which an outer side end of the supporting column swings upward; a roll driving part, mounted on the rotating arm. The roll driving part is in transmission connection with the polishing roll and drives the polishing roll to rotate on the supporting column in the circumferential direction of the polishing roll. An arm driving part is mounted on a fixed frame, the rotating arm being mounted on the arm driving part, and the arm driving part drives the rotating arm to rotate in a circumferential direction.
    Type: Application
    Filed: October 17, 2024
    Publication date: April 17, 2025
    Inventors: Depeng SUN, Yunlong LI, Yufeng WU, Jianlin ZHANG, Haojun LIU, Jiujun WANG, Ning AN, Zhiquan HU, Haimeng GAO, Zhichun ZHANG, LIN LI