Foundation pit horizontal safety distance measuring device and using method

• Main Authors: YANG HUI, DU MINGKAN
• Format: Patent
• Language: Chinese; English
• Published: 18.12.2020
• Subjects: MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; TESTING

The invention relates to a foundation pit horizontal safety distance measuring device which comprises a dial, a pointer, a rotating shaft, a vertical steel ruler, a transverse steel ruler, a pointer fixing knob and an adjustable fixing clamping groove, and is characterized in that the fan is fan-shaped, the angle range of the dial is 0-90 degrees, scale lines uniformly distributed along the direction of a quarter of a circular ring are engraved on the dial, and the rotating shaft is positioned at the central angle of the fan-shaped dial; the rotating shaft is used for fixing the pointer, the size of the rotating shaft ensures that the axis position of the pointer does not move, the pointer is connected with the dial through the rotating shaft and rotates to an internal friction angle on the dial, and the pointer fixing knob rotates to fix the angle direction of the pointer and is connected with the pointer through threads; the vertical steel ruler is arranged on the right-angle side ofthe fan-shaped dial, one