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Fast lofting method for connecting points of overhead line system of railway tunnel and automatic measuring system

A tunnel contact and measurement system technology, which is applied in the direction of measuring devices, measuring instruments, surveying and navigation, etc., can solve the problems of untimely processing, low safety factor, and unguaranteed accuracy, etc., and achieves shortened stakeout time, easy and fast operation, and guaranteed The effect of continuity

Inactive Publication Date: 2013-05-01
CHANGAN UNIV
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] Therefore, the above-mentioned existing methods for stakeout of contact points of railway tunnel catenary are too simple, unsystematic, low in safety factor, low in efficiency, unguaranteed in accuracy, and cannot be handled in time in special cases

Method used

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  • Fast lofting method for connecting points of overhead line system of railway tunnel and automatic measuring system
  • Fast lofting method for connecting points of overhead line system of railway tunnel and automatic measuring system
  • Fast lofting method for connecting points of overhead line system of railway tunnel and automatic measuring system

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Embodiment Construction

[0043] The new method for quickly setting out the connection point of the railway tunnel catenary of the present invention is specifically carried out according to the following steps:

[0044] Step 1: Make the tripod of the automated measurement system;

[0045] The automated measurement system includes a tripod and a total station installed on the tripod. see Figure 1-Figure 3 , the tripod includes a rectangular workbench 1, pillars 6 are respectively installed below the two ends of the workbench 1 in the length direction, and the top of one of the pillars 6 is connected to one end of the workbench 1 through a rotating shaft, and the workbench 1 can rotate around the rotating shaft; The upper part of another pillar 6 is hollow, and a telescopic rod 4 is inserted therein. The upper end of the telescopic rod 4 is connected with the workbench 1 through a rotating shaft, and the telescopic rod 4 can rotate around the rotating shaft; the telescopic rod 4 can move up and down in...

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Abstract

The invention discloses a fast lofting method for connecting points of an overhead line system of a railway tunnel and an automatic measuring system. The method includes the following steps: producing a foot stool of the automatic measuring system; installing and moving the automatic measuring system to an occupied station; regulating the foot stool to enable a worktable to be horizontal and a total station to be placed on a central line between two rails; calculating to obtain a steering angle; enabling the total station to aim at a back viewing point and turning over the steering angle to obtain a vertical surface where connecting point positions of the overhead line are located; rotating the lens of the total station in the vertical surface by a measurer and enabling the total station to measure continuously, obtaining a plurality of groups of measurement data, substituting each group of the measurement data into a formula in real time by the total station and alarming when the formula holds; then stopping the measurement, recording the laying-off angle of the group and corresponding laying-off distance; and displaying a point, namely the lofting point, on a tunnel wall by a laser sent by the total station and marking the point on the tunnel wall by the measurer to finish lofting. The method and the system can achieve high-efficiency and high-precision lofting point of the connecting points of the overhead line.

Description

technical field [0001] The invention belongs to the technical fields of precision engineering measurement and automatic measurement. In particular, the invention relates to a method for quickly setting out a connection point of a railway tunnel catenary and an automatic measurement system. Background technique [0002] In today's railway tunnel construction, it is particularly important to stake out the connection points of the catenary of the railway tunnel safely, accurately and efficiently. But this stakeout has caused headaches for surveyors in the construction of railway tunnel projects. This is because the construction personnel want to stake out the connection points of the catenary of the railway tunnel erected in space. First, they need to reverse calculate the coordinates of the points to be staked out according to the coordinates designed by the design institute, and then determine the location of the total station by wire measurement. The coordinates of the poi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C15/00
Inventor 杨志强王超
Owner CHANGAN UNIV
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