Device for measuring geometric dimension and orientation of narrow cavity penetrated by engineering drill hole

• Main Authors: TAN XUEYANG, YANG QINGKUN, KANG CAN, JIANG FUWEI, TANG SHUJUN, SONG HAIJUN
• Format: Patent
• Language: Chinese; English
• Published: 04.06.2024
• Subjects: GYROSCOPIC INSTRUMENTS; MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING DISTANCES, LEVELS OR BEARINGS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; NAVIGATION; PHOTOGRAMMETRY OR VIDEOGRAMMETRY; PHYSICS; SURVEYING; TESTING

The invention discloses a device for measuring the geometric dimension and orientation of a narrow cavity penetrated by an engineering drill hole. The device comprises a lifting operation rod, a suspender and an equipment mounting rod which are connected in sequence, a deflectable measuring rod is arranged at the lower end of the equipment mounting rod, the length of the measuring rod is larger than the diameter of a drill hole, and collision sensors are arranged at the two ends of the measuring rod. A reference rod which is always parallel to the measuring rod is arranged at the top end of the lifting operating rod; an electronic compass is arranged on the reference rod; the crash sensor and the electronic compass are connected with a central control device arranged outside the drill hole, and the central control device comprises a power supply control unit, a data acquisition unit and a data sending unit. The device provided by the invention can be used for measuring the size of a narrow hole penetrated by