Sealing liquid lubrication roller structure for borehole dressing tool

• Main Authors: ZHENG BOQIANG, YANG TONGHUA, HUANG YUN, HUANG BAOQIAN, WAN WENCAI, ZHENG TINGBI, WANG WEN, ZHANG ZELI, ZHANG TENGFEI
• Format: Patent
• Language: Chinese; English
• Published: 30.05.2023
• Subjects: BLASTING; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; ENGINEERING ELEMENTS AND UNITS; FIXED CONSTRUCTIONS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; LUBRICATING; MECHANICAL ENGINEERING; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; THERMAL INSULATION IN GENERAL; WEAPONS

The utility model discloses a sealing liquid lubrication roller structure for a borehole dressing tool, which comprises a roller shaft and a roller sleeved on the roller shaft, the center of the roller shaft is provided with a through axial oil injection hole, and two ends of the axial oil injection hole are in threaded connection with plugs. A radial oil injection hole communicated with the axial oil injection hole is formed in the middle of the roller shaft, three-section bushes are symmetrically fixed to the two ends of an inner hole of the roller relative to the center line of the radial oil injection hole, an oil storage cavity communicated with the radial oil injection hole is reserved between the three-section bushes at the two ends, and the oil storage cavity is filled with liquid lubricating oil. Due to the fact that liquid lubrication is adopted, the idler wheel can rotate on the idler wheel shaft more flexibly, friction resistance in the well drilling operation is reduced, and well drilling efficie