Petroleum drilling machine protection device

• Main Authors: LI YIZHANG, YE DINGPENG, ZHENG ZHIJUN, XU RONGJIANG, TANG MING, LI MIN, CHEN QI, ZHANG YU, REN SHAOQI, LI PEIZHAN
• Format: Patent
• Language: Chinese; English
• Published: 10.06.2022
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The utility model discloses a petroleum drilling machine protection device which comprises a derrick and a center console, a crown block, a racking platform and a rotating disc are installed on the derrick, a drill rod is arranged in the derrick, an annular machine shell is arranged at the top of the drill rod, a limiting ring and a driving motor are arranged in the annular machine shell, and the driving motor is connected with the derrick. A speed sensor and a controller are arranged on the inner surface wall of the limiting ring, a protruding block is integrally formed on the inner surface wall of the limiting ring, and a guide hole is formed in the protruding block. When the petroleum drill rod falls, the speed sensor detects acceleration of the drill rod and transmits an acceleration signal to the controller, the controller controls the driving motor to start, the driving motor drives the disc to rotate, and the rotation of the disc enables the limiting pin to slide towards the outer side from the inner s