Multi-arm underground diameter measuring probe

• Main Authors: DU GUOJUN, CONG HAOJIE, SUN TIANAO, WANG XIAN, ZHANG SHUAI, LV JIAN, LV HUAIZHEN, WANG QUN, WANG WENTIAN, XIAO XIANDONG, TONG CHAO, PAN DEFENG, GOU QIANGYUAN, ZHANG WEI, BI WEN
• Format: Patent
• Language: Chinese; English
• Published: 09.10.2013
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; PHYSICS; TESTING

The utility model discloses a multi-arm underground diameter measuring probe. According to a specific structure of the multi-arm underground diameter measuring probe, a support rod is equipped with a suspension ring, a counterweight and a plurality of pairs of measuring arms; according to a structure of each measuring arm, two ends of a slide rod are respectively equipped with a fixing block A and a fixing block B, the fixing block A is equipped with a laser displacement sensor, a central portion of the slide rod is sleeved with a slide block, a spring is arranged between the slide block and the fixing block A, the slide block is connected with a long rod through a connection ring A, the fixing block B is further connected with another long rod through a connection ring B, the other ends of the two long rods are connected together, and a connection position of the two long rods are equipped with a roller. Inner diameter dimensions of a tube well can be indirectly calculated through a displacement distance of