Bracket of automatic leveling type measurer for liquid level sensing and use method thereof

Abstract

The invention discloses a bracket of an automatic leveling type measurer for liquid level sensing and a use method thereof, and belongs to the technical field of engineering measuring. The use methodis characterized in that before use, the respective telescopic adjusting of three support rods is not needed, the three support rods can be simultaneously adjusted to the operation heights by only pressing one press button, and an upper instrument tray is roughly maintained at the horizontal state, and can be automatically sensed and leveled by a liquid level sensing device on the upper instrumenttray, so as to reach the purpose of quickly, automatically and precisely leveling the measurer; by utilizing two different liquid level heights of a sealed U-shaped sensing tube, when the liquid levels have height difference, an electric signal is produced, but the specific value of the height difference of the liquid levels is not required, so that the poor influence to the horizontal adjustingprecision of the device is avoided even if the device is repeatedly used for multiple times. The bracket has the advantages that the operation process is simple and convenient, the time and labor of an operator are saved, the construction period is shortened, the manufacturing is simple, and the cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of engineering measurement, in particular to a support for a liquid level induction automatic leveling measuring instrument and a method for using the same. Background technique [0002] Engineering surveying is used in the whole construction process. At present, level, theodolite, total station, etc. are the most commonly used measuring instruments in engineering surveying. Before use, these measuring instruments usually need to be installed on the tripod, and then the three support rods are adjusted respectively to make the instrument tray roughly level, and then the three bases under the base of the measuring instrument are repeatedly adjusted. Foot screw for precise leveling of the gauge. The traditional manual leveling method is cumbersome and requires too much operating time and energy of the observers. [0003] In order to improve the leveling efficiency of measuring instruments during installation,...

AI Technical Summary

Problems solved by technology

Its shortcomings: First, although the motor is used to adjust the height of the three support rods to automatically adjust the level, the overall height of the tripod bracket cannot be stretched at any position within a certain vertical range, which brings inconvenience to the surveyors when observing ; The second is that its level sensor control device is fixed on the inner side of the three support rods, so that the whole bracket cannot be freely closed like a traditional tripod bracket, which requires high flatness of the ground at the observation place and is not easy to carry during engineering measurement; the third is that the patent When the three support rods are freely expanded and contracted by the motor in the inclined direction, not only the vertical displacement of the entire support, but also the corresponding horizontal displacement, it is difficult to meet the overall stability of the support in the actual horizontal adjustment

Its shortcomings: First, the load-carrying platform of the device has certain requirements for the load-bearing form of its upper part, which cannot be satisfied by the measuring instruments used for engineering measurement; second, the four hydraulic adjustment pumps are equivalent to four supports, supporting one at the same time The horizontal loading platform is a statically indeterminate structure. When the four hydraulic adjustment pumps cannot be adjusted at the same time, the surface of the loading platform will be deformed, and the purpose of leveling the loading platform cannot be achieved; the third is that the level detection module is through loading The horizontal offset of the platform is different, and different electrical signals are generated to adjust it. The horizontal offset and accuracy of the detection platform are quite high. After repeated use, it will have a negative impact on the horizontal adjustment accuracy of the device.

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