SU30456A1 - Adaptation to theodolite to determine the excess points and horizontal positions of the lines during a total station survey - Google Patents

Description

The invention relates to devices for mechanization of work in a tacheometric survey, giving immediately in the field both horizontal distance of lines and elevation of points.

The proposed fixture, attached to the side or front of the theodolite, is made in the form of a rotary drum placed in the casing with a diagram printed on it through the slot in the casing of excess points and a scale for measuring the laying of lines. To rotate the drum there is a sector mounted on the horizontal axis of the theodolite pipe.

In FIG. 1 depicts an elevation diagram; FIG. 2-line with indexes; FIG. 3-general view of the device; fng 4- sector connection with the drum; FIG. 5- device (Fig. 3), mounted on the side of theodolite; FIG. 6 is another embodiment of the joint shown in FIG. four.

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The device or device has the purpose to make desk calculations unnecessary after the shooting. During work in the field, he gives both the horizontal position of the lines and the excess of points. The main part of the fixture is the elevation diagram plotted on the mobile qiindra. A diagram of the drum A is shown unfolded in FIG. 1. On the vertical axis of the diagram, the degrees of the angles of inclination are plotted, and on the horizontal-logarithmic scale of lengths.

The constant elevation curves are calculated by the formula of the slope and show elevations equal to 1, 2, 3 ... 9, 10 meters with a scale of lengths from 10 to 100 meters or 10, 20, 30 ... 90, 100 meters with a scale Lengths from 100 to 1000 meters. Excess over 100 meters is very rare. In addition, the angles of inclination are limited to 30 degrees in both directions, which is practically enough. The average (straight) line shows above ff. 9fff

{FIG. 6

Expert G.V., Varlich Editor Yu. N. Erlich

Type, "Spark