SU65456A1 - Theodolite - Google Patents

Description

When observations are made in the triangulation of Class I and Class II with high-precision goniometric instruments, inaccuracies in measured angles caused by tool shifts are inevitable. The most dangerous turns and stands of the tool are due to the twist of the signal on which production is made. To reduce the effect of the signal torsion, the developed method of observation at the station is used, triangulation signals are constructed with a margin of stability and hardness, and a perpendicular pipe is attached to the observations. These measures are not able to completely eliminate the error in the measurement of angles.

The existing construction of the verification tube does not guarantee the exclusion of the considered error in the angular measurements, because in the case of the instructor; 1 that there are two observers who cannot observe exactly at the same time, the observer who works with the assurance tube makes the results of angular measurements are some additional - tel lo error due to the quality of its work.

The subject of the invention is a theodolite with a trusting pipe, the construction of which will make it possible to observe this direction of triangulation and the non-moving mark controlling the turns of the instrument stand to one observer at the same physical moment.

FIG. 1 depicts a turnpipe, side view; in fig. 2-principle scheme of interaction between the main and the trust tubes; in fig. 3-view in the field of view of the main pipe.

The tool is designed so that the image of the fixed reference mark / installed at a distance of 1-2 km from the instrument is transmitted through the verification tube 2 into the field of view of the main tube 3. The observer can simultaneously observe the object (target) 4 of the Dane and fixed mark /.

.NO 65456 - 2 Observation is made by a compisacion. The io: i 5 is checked by the verifier after combining the images of two pointers and redoids. For the combination of images, the micrometer has a pair of pairs.; 1; plate 6. As a result of the indication, the combination was automatically distorted ;; for turning the instrument stand.

The beam of light from the fixed I.OH.rpojibHoii of mark 7 doesnonade into the lens of the retrieving tube and is transmitted by the system irim 7, 8, 9 and 10 through the hollow axis of the instrument in the field 3) enn of the main tube. Believe; , the pipe has a micrometer 5 with a nlokosobaralnoy ilast1 NORAY 6; By turning a micrometer you can shift the image mark / azimuth. The magnitude of the displacement is measured with reference to the drum of a micrometer :), moreover, the image1) a decrease ba | Abapa can be seen in zero view of the main pipe. For the possibility of G: 0. mei |, enn image of the mark of the control mark / in the field of view of the pipe 3 theodo-tita pas at the same height with the image of the object (not large) 4, the angle Sr1 S1 of the lnena of the turning angle of the micromechanical mechanism. The reflector face of the angular prism 7 is provided with a control mark U / placed in the first section of the swivel pipe, with a tube, measuring the like on the azimuth when turning the prism 8 to align the height images by measuring corrections with an ocular mic theodolite tube.

The order of observation is as follows.

The main tube is aimed at the observed object, a flashlight, heliotrope, or sight cylinder, and adjusts it so that the image of the object (target) j is closer to the center of the field of view of the pipe. The prism 5 is installed with a micrometer mechanism so that the center of the image of the mark / is at the same height as the image of the observed object 4. I act with the micrometer 5 of the main tube, combine the image of mark 1 with the image of the observed objective 4. This combination is repeated two or three times, recording each time in the journal readings on the micrometer drum 5. Since during installation of the prism we are 8 the image of mark 1 may be slightly shifted in azimuth, it is necessary to determine the amount of shift by micrometer 12 of the main pipe 3 by aiming 13 nnty micrometer of the main tube of the main pipe for the prism brand 7. Flooding is done one or two times before the indicated image alignment and the same number of times after the combination. Samples but micrometer recorded in the log of observations. The described observation of the mark completely takes into account the entire complex of shifts of the tool axis by aznmut, caused by shifts of the main tube by aznmut when rotating it from the vertical plane.

Subject invention

Claims (4)

1. A theodolite for conducting triangulation works with a casting tube, characterized in that, in order to produce a simultaneous sighting of the target through the theodolite tube and the control mark through the verification tube in the same visual field, the planes of the image of both tubes are combined using angular and dividing prisms, installed in the theodolite telescope. 2. Theodolite according to claim 1, characterized in that in order to accurately measure the magnitude of the angular displacement of the reference mark relative to the target, the confidence tube is provided with an optical compensation micrometer, for example, with a rotating plane-parallel plate. 3. The form of theodolite in paragraphs. 1 and 2, characterized in that, in order to be able to place the image of the reference mark in the field of view at the same height with the image of the target, the angular prism is rotary with a micrometer mechanism. 4. The form of theodolite performance according to claim 3, wherein. The first reflection face of the corner prism is provided with a control mark, marked in the first plane of the image of the verification tube,: the possibility of measuring the correction for rotating the image along the;: 3; 1mut, when turning the prism to align the images along the height, ; measuring the correction directly with an ocular micrometer -jjxf))) theodolite. Ji 12J ch T7 2 t 3ug 6th Pale Primary mptj ig. 3