Earthwork backfilling elevation measuring device suitable for large-size foundation pit or trench

Abstract

The invention discloses an earthwork backfill elevation measuring device suitable for a large-size foundation pit or trench, which comprises a base, a plurality of fixing cones arranged on the lower surface of the base, and a laser indicator, an upright column is fixedly mounted on the upper surface of the base, a sleeve is sleeved on the upright column, a top plate is fixedly mounted on the sleeve, and the laser indicator is fixedly mounted on the top plate. A photosensitive sensor is fixedly installed on the upper end face of the stand column, a distance measuring sensor is fixedly installed on the upper surface of the base, a stepping motor is fixedly installed on the upper surface of the base, a first bevel gear is fixedly installed on a rotating shaft of the stepping motor, and a second bevel gear is fixedly installed on a transmission shaft. The first bevel gear is meshed with the second bevel gear, the upper end of the transmission shaft is fixedly connected with a lead screw, a nut seat is installed on the lead screw, and the side surface of the nut seat is fixedly connected with the side surface of a sleeve through a connecting rod. The method has the beneficial effects that the method is suitable for a measurement environment with a larger foundation pit or groove, and the measurement process is simple and practical.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to an earthwork backfill elevation measuring device suitable for large-scale foundation pits or trenches. Background technique [0002] Backfilling soil refers to the soil that is returned for filling after the foundation and other underground works are completed during engineering construction. In order to ensure that there will be no problems such as settlement cracks after backfilling construction, engineers must accurately grasp the elevation of backfilling before backfilling, so as to accurately calculate the amount of backfilling of earthwork, and avoid unevenness of the bottom surface caused by too much or too little earthwork The problem. The elevation of backfill soil is obtained by subtracting the height of the road structure after subtracting the height of the project bottom from the height of the road. Therefore, the measurement of the bottom height of the...

AI Technical Summary

Problems solved by technology

The elevation of backfill soil is obtained by subtracting the height of the road structure after subtracting the height of the project bottom from the height of the road. Therefore, the measurement of the bottom height of the project is the basis for determining the elevation of the backfill soil. In the existing construction process, engineering personnel generally It is to manually measure the elevation of earthwork backfilling for the subject matter that needs to be backfilled, such as the road surface and foundation pit. The process is cumbersome, and the measurement accuracy of this method is easily affected by human factors. Higher construction demand

[0003] In order to solve the above problems, those skilled in the art have designed a device for automatically measuring the elevation. This device is generally installed at the opening of the foundation pit or trench, and measures the elevation of the earthwork backfill by means of optical ranging, thereby solving the problem of manual measurement. The process is cumbersome, and the measurement accuracy is easily disturbed by factors; however, when the excavated trenches for foundation pits or pavement construction are too large, the existing automatic measuring devices are difficult to fix and cannot meet the needs of large foundation pits. Or the measurement of the earthwork backfill elevation of a large trench

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