Automatic level with built-in micrometer panel and assembly method thereof

Abstract

The invention discloses an automatic level with a built-in micrometer panel and an assembly method thereof. The automatic level with the built-in micrometer panel comprises a substrate and a shell; the inside of the shell is provided with parts such as a main objective group, a focusing lens group, a rear objective group, an erect image prism group, a compensator and the like in order; a telescopic ocular group is arranged on the rear end face of the shell; an upper base platform of the main objective group, the focusing lens group and the rear objective group in the shell is provided with a transmission guide rod of which the rear end part is provided with a micrometer ruler group; a micrometer handle wheel group and a steering prism group are arranged under the micrometer ruler group; a micrometer ocular is arranged on the rear end face of the shell; the front end of the man objective group at a proper distance is provided with a micrometer panel group connected with the transmission guide rod; and the front end face of the shell is sealed with protective glass. The compensator of the automatic level is arranged from the lower end of the shell and is directly fixed on the shell. The automatic level has high micrometer precision and reliability, and is waterproof and dustproof.

Description

technical field [0001] The invention relates to a level in the field of measurement, in particular to a high-precision automatic leveling level capable of micro-measurement and an assembly method thereof, which are used in measurement fields such as construction engineering measurement, settlement measurement, and mine measurement. Background technique [0002] At present, in high-precision leveling instruments generally used in national second- and third-class leveling surveys, construction engineering surveys, deformation and settlement monitoring, mine surveys, large-scale machine installations, tool processing surveys, and precision engineering surveys, high-precision 2″ The first-class automatic leveling level is equipped with a flat-panel micrometer accessory. The error in the height difference is generally between 0.5mm-1mm per kilometer. It has the advantages of high measurement accuracy and automatic leveling, but it also has the following disadvantages. : 1. Since ...

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Problems solved by technology

[0002] At present, in high-precision leveling instruments generally used in national second- and third-class leveling surveys, construction engineering surveys, deformation and settlement monitoring, mine surveys, large-scale machine installations, tool processing surveys, and precision engineering surveys, high-precision 2″ The first-class automatic leveling level is equipped with a flat-panel micrometer accessory. The error in the height difference is generally between 0.5mm-1mm per kilometer. It has the advantages of high measurement accuracy and automatic leveling, but it also has the following disadvantages. : 1. Since the center of gravity of the plate micrometer is forward, when the automatic leveling instrument is equipped with a plate micrometer, its center of gravity will also move forward, resulting in the instrument not being stable enough; 2. The attachment of the plate micrometer , there are errors caused by installation, disassembly and positioning, which affect the measurement accuracy; 3. Due to the non-sealed device, the objective lens of the Anping automatic level and the flat glass of the micrometer are easy to be dirty and worn, which affects the accuracy of the micrometer, and the flat micrometer and the automatic The dustproof and waterproof performance of Anping Level is poor; 4. The compensator is loaded from the side of the telescope eyepiece and fixed to a right-angle connecting frame fixed on the shell entropy. This fixing method will cause the right-angle connecting frame to be damaged due to the weight of the compensator Deformation and positioning errors will cause the compensator to not be in a horizontal state when the instrument is level at the end, which will easily cause leveling errors; 5. The shell of the automatic leveling instrument is separated from the back cover where the telescopic eyepiece is installed. It will cause the center of the telescopic eyepiece to not be in the exact center of the optical path, and as a result, the light in the optical path will be cut and the image will be incomplete

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