Measurement method for accurately controlling verticality and coplanarity of caterpillar gate embedded part

Abstract

The invention provides a measurement method capable of accurately controlling caterpillar gate embedded part coplanarity. The measurement method is characterized in that a theodolite is arranged on a set measuring basis control point position, a magnet base is positioned on the work surface of an embedded part to be measured, the root portion of a vernier caliper is tightly attached to the measuring work surface of the embedded part, scales of the vernier caliper face to the ocular visible position of the theodolite or a total station, the scale line of the well placed vernier caliper is sought through an ocular cross line of the theodolite or the total station, the scale position of the vernier caliper corresponding to an ocular of the theodolite or the total station is determined, the number value of the vernier caliper is read, and the vernier caliper reading difference value of all other detection points is the vertical difference value of the embedded part; and reading values of all points of the work surface of another embedded part are measured by repeating the steps, the difference value of two side vernier caliper reading difference values is the difference value of embedded part coplanarity, and the embedded parts are adjusted to reach the preset adjustment position by determining the difference value of the coplanarity and the verticality of the embedded parts.

Description

technical field [0001] The invention relates to a measuring method, in particular to a measuring method for accurately controlling the verticality and coplanarity of the sprocket gate embedded parts. Background technique [0002] Embedded parts such as main rails and lintels of hydropower station gates are usually poured in the second-stage concrete, and the installation accuracy level is usually measured in millimeters. The traditional method uses theodolite or total station to measure and place control points for preliminary embedded parts positioning, and then uses The verticality and coplanarity are adjusted by the pendant hammer method. Since the installation error of the traditional pendant hammer method is millimeter level, it can only meet the installation accuracy requirements of ordinary embedded parts. For high water heads such as sprocket gates (working water head greater than 100m) slab gate, in order to ensure that the gate sprocket works evenly under pressure,...

AI Technical Summary

Problems solved by technology

[0003] For this reason, this method considers the practical difficulty of ensuring measurement accuracy in field installation adjustment and acceptance, and uses a high-precision theodolite combined with a vernier caliper to effectively solve the installation and adjustment of the high-precision verticality and coplanarity of the sprocket gate embedded parts. acceptance problem

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