An observation platform for construction surveying

Abstract

The invention relates to the technical field of measuring, surveying and mapping accessory devices and particularly relates to an observation platform for construction surveying. The position of a mounting plate can be adjusted after a fixing plate is fixed to a wall surface without the need of punching the wall surface again, thus reducing early surveying steps, making operation simple and improving using reliability. The surveying orientation of a surveying instrument can be adjusted conveniently so that practicability is improved. The observation platform includes the fixing plate providedwith a plurality of first through holes and the mounting plate provided with a plurality of second through holes, and also includes a bottom plate, a supporting plate, a threaded bar, a threaded pipeand a first ball bearing. Front and rear sides of the left side wall of the fixing plate are provided with a front vertical dovetail groove and a rear vertical dovetail groove respectively. The frontand rear sides of the right end of the supporting plate are provided with a front dovetail sliding block and a rear dovetail sliding block respectively. The observation platform also includes a gear,a rotating shaft, an adjusting lead screw, a rectangular sliding block, a second ball bearing, a strip-shaped slot and a third ball bearing. The rear end of the rectangular sliding block is provided with a toothed structure.

Description

technical field [0001] The invention relates to the technical field of surveying and mapping attachments, in particular to a construction surveying and observation platform. Background technique [0002] As we all know, the construction measurement and observation platform is an auxiliary device used to install measuring instruments during the construction of tunnels and dams. It has been widely used in the fields of tunnel construction, subway construction, and dam construction; the existing construction The measurement and observation platform includes a fixed plate, a mounting plate and a connecting rod. There are multiple sets of first through holes on the fixed plate, and multiple sets of second through holes on the mounting plate. The right end of the mounting plate is connected to the top of the left end of the fixed plate. One end of the rod is connected with the bottom end of the mounting plate, and the other end of the connecting rod is inclined downward and connec...

AI Technical Summary

Problems solved by technology

[0002] As we all know, the construction measurement and observation platform is an auxiliary device used to install measuring instruments during the construction of tunnels and dams. It has been widely used in the fields of tunnel construction, subway construction, and dam construction; the existing construction The measurement and observation platform includes a fixed plate, a mounting plate and a connecting rod. There are multiple sets of first through holes on the fixed plate, and multiple sets of second through holes on the mounting plate. The right end of the mounting plate is connected to the top of the left end of the fixed plate. One end of the rod is connected with the bottom end of the mounting plate, and the other end of the connecting rod is inclined downward and connected with the left end of the fixed plate; when the existing construction surveying observation platform is used, the fixed plate is installed on the wall through the first through hole , the measuring instrument is installed through the second through hole, and the firmness of the connection between the fixed plate and the connecting plate is improved through the connecting rod; in the use of the existing construction measurement and observation platform, it is found that once the fixed plate is fixed to the wall, the position of the mounting plate is easy If it is found that the installation position is inaccurate, you can only re-drill holes on the wall, which is cumbersome and leads to low reliability in use; and during the construction process, it is often necessary to measure the construction conditions in different directions with measuring instruments, and other It is inconvenient to adjust the measurement orientation of the measuring instrument, resulting in low practicability

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