The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 16, 2025
Filed:
Dec. 03, 2020
Xuzhou Xugong Foundation Construction Machinery Co., Ltd., Xuzhou, CN;
Jun Li, Xuzhou, CN;
Yan Lv, Xuzhou, CN;
Qiang Liu, Xuzhou, CN;
Dechun Ping, Xuzhou, CN;
Lihua Han, Xuzhou, CN;
Tong Chang, Xuzhou, CN;
Jie Zhou, Xuzhou, CN;
Gang Zhang, Xuzhou, CN;
Hui Chen, Xuzhou, CN;
Yaqing Mu, Xuzhou, CN;
Abstract
A test device for testing and commissioning comprehensive performance of a rotary drilling rig is provided. Dynamometer motors in the test device are provided on a foundation. A torque transmission gearbox is fixed on a gearbox anchoring plate through a gearbox adapter plate. A speed-increasing corner gearbox is provided on the torque transmission gearbox and connected to the dynamometer motors through a transmission shaft, a torque sensor, and a motor coupling sequentially. A drive sleeve is provided in a connecting shaft of the torque transmission gearbox. A lower end of the drive sleeve is connected to a hydraulic loading cylinder through a rotating bearing, a rotating support, and a tension-pressure sensor. The rotating support is fixed in the foundation. The hydraulic loading cylinder is connected to a hydraulic station through a hydraulic pipe. The tension-pressure sensor and a pressure control valve are connected to a computer software control system.