Dual-gravity geological compass

Abstract

The invention relates to a dual-gravity geological compass which comprises an outer frame and a compass body arranged in the outer frame, wherein the compass body comprises an inner shell and a pointer rotating shaft arranged in the inner shell; a dial and a magnetic pointer and a steel pointer which can rotate around the pointer rotating shaft are arranged in the inner shell; the compass body further comprises two inner shell rotating shafts; the upper end and the lower end of the inner shell are respectively connected with the outer frame in a rotating manner through the two inner shell rotating shafts; the axial lines of the two inner shell rotating shafts are overlapped with the middle line of a cover shell; when a space inclination angle is measured, the compass body rotates under the gravity action, and vertical calibration is implanted, so that the steel pointer can rotate in a vertical plane under the gravity action, and the measurement precision of the compass is improved. Compared with the prior art, the dual-gravity geological compass has the advantages that the measured angle is precise, subjective judgment interference is avoided and the like.

Description

technical field [0001] The invention relates to the field of geological survey, in particular to a dual-force geological compass. Background technique [0002] The spatial real occurrence parameters of planar (such as rock-soil phyllography, mountain slope) and linear traces (such as rock-soil texture, exploration detection line) in geological bodies are necessary for geological exploration and geological engineering exploration The basic parameters to measure. Through these parameters, researchers can obtain a reliable understanding of the spatial distribution of geological features in the study area. However, in the process of measuring parameters in the existing related measurement tools (such as geological compass), there are many steps that rely heavily on the subjective experience of the measurer (such as judging whether the compass surface is vertical, whether the water bubble of the level is centered), resulting in There are many deviations brought about in it; mor...

AI Technical Summary

Problems solved by technology

However, in the process of measuring parameters in the existing related measurement tools (such as geological compass), there are many steps that rely heavily on the subjective experience of the measurer (such as judging whether the compass surface is vertical, whether the water bubble of the level is centered), resulting in Contains more deviations brought about by this; moreover, the magnitude of these deviations is often difficult to assess

[0003] However, some existing geological compasses that rely less on subjective experience operations are generally bulky, inconvenient to carry, and easily damaged in field survey practice. For example, the Chinese patent application number 201110054119.3 discloses a geological compass, including a base , a sight, an azimuth dial, a goniometer and a hemispherical transparent cover; the sight is set on the side of the base and has two tips at the same level; the top surface of the base has a hemispherical groove, and the diameter of the groove is The inner diameter of the transparent cover is the same as that of the floating liquid; the azimuth dial is a disk with magnetic poles and floats on the floating liquid; the transparent cover is set above the groove and is sealed with the top surface of the base; the transparent cover has Alignment line, the alignment line is half a great circle passing through the top of the transparent cover, and the plane where the alignment line is located is parallel to the straight line where the two tips of the sight are located; the goniometer is a ring marked with a scale and is set on the transparent cover and the groove In the enclosed space, a rotating shaft is provided on the top of the transparent cover and the bottom of the groove, and the upper and lower ends of the goniometer are respectively hinged to the rotating shaft; the straight line where the rotating shaft is located divides the goniometer into two semicircular rings, One half ring is heavier than the other half ring

However, the geological compass is too heavy and extremely inconvenient to carry

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