A method for long distance measurement using vertical control network

Abstract

The invention discloses a method for long-distance measurement by using a laser tracker and a total station in combination with a vertical control network, which is used for long-distance equipment deviation detection. The method uses a laser tracker and a total station for joint measurement, which gives full play to the respective advantages of the two instruments, and can complete the measurement task of long-distance equipment without complicated adjustment calculations. The invention does not require complicated adjustment calculations, has high measurement accuracy, and has been verified by the vertical control network, making the measurement data more accurate and reliable.

Description

Technical Field

[0001] The invention relates to a method for long-distance measurement by combining a laser tracker and a total station with a vertical control network. Background Art

[0002] The total station has the advantages of small angle measurement error and long measurement distance, while the laser tracker has the advantage of high distance measurement accuracy. Due to the difference in measurement principles, it is difficult to conduct joint measurement between the two. There are some measurement methods for joint measurement, but they require complex adjustment calculations and the verification of the vertical control network to make the measurement data more reliable and accurate. The present invention cleverly utilizes the angle measurement advantages of the total station for layout and the advantages of the laser tracker in establishing the coordinate system, and can achieve joint measurement of the laser tracker and the total station without any complex calculations.

[0003] Comparative Data 1: A method for measuring the straightness and flatness of long-distance tracks

[0004] The invention discloses a method for measuring the straightness and flatness of a long-distance track. The coordinate value of the center point of each mileage position of the track is measured by the reference line function of a total station, and the straightness deviation value and the flatness deviation value of each mileage position are directly obtained. Then, the flatness and straightness of the track can be obtained by simple calculation. Compared with the measurement method, the accuracy of the measurement by the combined measurement method of a laser tracker and a total station is significantly improved. Summary of the invention

[0005] The purpose of the present invention is to provide a method for long-distance measurement by combining a laser tracker and a total station with a vertical control network to improve the measurement accuracy of long-distance equipment. The invention does not require complex adjustment calculations, has high measurement accuracy, and is verified by the vertical control network to make the measurement data more accurate and reliable.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] The present invention provides a method for long-distance measurement by combining a laser tracker and a total station with a vertical control network, comprising:

[0008] Use a total station to verify the verticality between the transverse reference line and the rolling center line;

[0009] Set up the total station at the first control point, level and center it, aim at the next second control point, set the angle to zero, and lock it in the horizontal direction; use the theodolite target ball and 502 glue to fix the transfer station base at a position where the rolling center line is on the same straight line;

[0010] Repeat the above steps to fix the transfer station base in a position that is in the same straight line as the transverse reference line; set up a laser tracker to measure the rolling mill frame, roller table, saw machine and the transfer station base fixed on the rolling center and the transverse reference line;

[0011] Fit the measuring points on the rolling center line to straight line a, fit the measuring points on the transverse reference line to straight line b, determine the angle between straight lines a and b, and proceed to the next step when the angle between the two straight lines is 90°±0.03°;

[0012] Establish a coordinate system to measure the deviation values ​​of rolling mills, roller tables and saw machines.

[0013] Further, the specific steps include:

[0014] (1) Use a total station to verify the verticality of the first rolling mill transverse reference line, the second rolling mill transverse reference line, the third rolling mill transverse reference line and the rolling center line;

[0015] (2) Set up the total station at the control point, level and center it, aim at the control point, set the angle to zero, and lock it in the horizontal direction;

[0016] (3) Using the theodolite target ball, use glue to fix the transfer station base 2 at a position where the rolling center line is on the same straight line, and place one every 8 meters;

[0017] (4) Repeat steps (2) and (3) to fix the transfer station base at a position on the same straight line as the transverse reference line of the first rolling mill, the transverse reference line of the second rolling mill, and the transverse reference line of the third rolling mill, with one base being arranged every 4 meters;

[0018] (5) Setting up the laser tracker at the first station position, in order to be able to measure the internal structure of the rolling mill frame 4, setting up the laser tracker at a position roughly at the transverse reference line of the first rolling mill;

[0019] (6) Measure the rolling mill stand, the measurable transfer station base fixed on the same straight line as the rolling center line, and the transfer station base fixed on the same straight line as the transverse reference line of the first rolling mill;

[0020] (7) Fit the measuring points on the rolling center line to a straight line a along the geoid, and fit the measuring points on the transverse reference line of the first rolling mill to a straight line b along the geoid, and determine the angle between the straight lines a and b. When the angle between the two straight lines is 90°±0.03°, proceed to the next step. Otherwise, check the cause and proceed to the next step only when it is confirmed to be correct.

[0021] (8) Use the rolling center line and the geoid to establish a coordinate system to measure the deviation value of the rolling mill;

[0022] (9) Similarly, the laser tracker is set to the second station and the third station respectively, and the second rolling mill frame, roller table and saw are measured respectively. The coordinates of the transfer station base on which the second rolling mill transverse reference line, the third rolling mill transverse reference line and the rolling center line are on the same straight line are collected respectively, and they are fitted into straight lines respectively to determine the angle between the second rolling mill transverse reference line, the third rolling mill transverse reference line and the rolling center line. When the angle between the two straight lines is 90°±0.03°, the next step can be carried out. Otherwise, the cause should be checked and it can be carried out only when it is confirmed to be correct. The coordinate system is established using the rolling center line and the geoid to measure the deviation value of the second rolling mill frame, roller table and saw.

[0023] Compared with the prior art, the beneficial technical effects of the present invention are:

[0024] The invention does not need to perform complicated adjustment calculations, has high measurement accuracy, and has been verified by a vertical control network, making the measurement data more accurate and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] Figure 1 Layout diagram for control network;

[0027] Figure 2 Provide a top view of the control network layout.

[0028] Markings in the accompanying drawings: 1.1-first control point; 1.2-second control point; 2-transfer station base; 3-laser tracker, 3.1-first station, 3.2-second station, 3.3-third station, 3.4-fourth station; 4-rolling mill frame; 5-roller; 6-saw machine; 7.1-transverse reference line of the first rolling mill, 7.2-transverse reference line of the second rolling mill, 7.3-transverse reference line of the saw machine roller; 8-rolling center line. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1 , 2 The implementation of the technical solution is further described in detail in order to more clearly describe the structure and working principle of the ground gate.

[0030] The specific implementation mode of the present invention is:

[0031] (1) Use a total station to verify the verticality of the first rolling mill transverse reference line 7.1, the second rolling mill transverse reference line 7.2, the third rolling mill transverse reference line 7.3 and the rolling center line 8;

[0032] (2) Set up the total station 1 at the first control point 1.1, level and center it, aim at the second control point 1.2, set the angle to zero, and lock it in the horizontal direction;

[0033] (3) Using the theodolite target ball, use 502 glue to fix the transfer station base 2 at a position where the rolling center line 8 is on the same straight line, and place one every 8 meters;

[0034] (4) Repeat steps (2) and (3) to fix the transfer station base 2 at a position on the same straight line as the first rolling mill transverse reference line 7.1, the second rolling mill transverse reference line 7.2, and the third rolling mill transverse reference line 7.3, with one base being arranged every 4 meters;

[0035] (5) Setting up the laser tracker 3 at the first station 3.1. In order to be able to measure the internal structure of the rolling mill frame 4, setting up the laser tracker 3 at a position approximately at the transverse reference line 7.1 of the first rolling mill;

[0036] (6) measuring the rolling mill stand 4, the measurable transfer station base 2 fixed on the same straight line as the rolling center line 8, and the transfer station base 2 fixed on the same straight line as the transverse reference line 7.1 of the first rolling mill;

[0037] (7) Fit the measuring points on the rolling center line 8 to a straight line a along the geoid, and fit the measuring points on the first rolling mill transverse reference line 7.1 to a straight line b along the geoid, and determine the angle between the straight lines a and b. When the angle between the two straight lines is 90°±0.03°, proceed to the next step. Otherwise, check the cause and proceed to the next step only when it is confirmed to be correct.

[0038] (8) Using the rolling center line 8 and the geoid to establish a coordinate system, the deviation value of the rolling mill is measured;

[0039] (9) Similarly, three laser trackers are set at the second station 3.2 and the third station 3.3 respectively.

[0040] Measure the second rolling mill frame 4, roller table 5 and saw machine 6 respectively, collect the coordinates of the transfer station base 2 on the same straight line of the second rolling mill transverse reference line 7.2, the third rolling mill transverse reference line 7.3 and the rolling center line 8, and fit them into straight lines respectively, determine the angles of the second rolling mill transverse reference line 7.2, the third rolling mill transverse reference line 7.3 and the rolling center line 8, and proceed to the next step only when the angle between the two straight lines is 90°±0.03°, otherwise check the cause and proceed only when it is correct; use the rolling center line 8 and the geoid to establish a coordinate system to measure the deviation values ​​of the second rolling mill frame 4, roller table 5 and saw machine 6.

[0041] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A method for long-distance measurement using a vertical control network, characterized in that: The specific steps include: (1) Use a total station to verify the verticality of the first rolling mill's transverse reference line, the second rolling mill's transverse reference line, the third rolling mill's transverse reference line and the rolling center line; (2) Set up the total station at the first control point, level and center it, aim at the second control point, set the angle to zero, and lock it in the horizontal direction; (3) Use the theodolite target ball and 502 glue to fix the transfer station base at a position where the rolling center line is on the same straight line, and place one every 8 meters; (4) Repeat steps (2) and (3) to fix the transfer station base in a position that is in the same straight line as the transverse reference line of the first rolling mill, the transverse reference line of the second rolling mill, and the transverse reference line of the third rolling mill, with one base installed every 4 meters; set up a laser tracker to measure the rolling mill frame, roller table, saw machine, and the transfer station base fixed on the rolling center and the transverse reference line; (5) Setting up the laser tracker at the first station. In order to measure the internal structure of the rolling mill frame, the laser tracker is set up at the position of the transverse reference line of the first rolling mill; (6) Measure the rolling mill stand, the measurable transfer station base fixed on the same straight line as the rolling center line, and the transfer station base fixed on the same straight line as the transverse reference line of the first rolling mill; (7) Fit the measuring points on the rolling center line to a straight line a along the geoid, and fit the measuring points on the transverse reference line of the first rolling mill to a straight line b along the geoid, and determine the angle between the straight lines a and b. When the angle between the two straight lines is 90°±0.03°, proceed to the next step. Otherwise, check the cause and proceed to the next step only when it is confirmed to be correct. (8) Use the rolling center line and the geoid to establish a coordinate system to measure the deviation value of the rolling mill; (9) Similarly, the laser tracker is set to the second station and the third station respectively, and the second rolling mill frame, roller table and saw are measured respectively. The coordinates of the transfer station base are collected respectively, and the transverse reference line of the second rolling mill, the transverse reference line of the third rolling mill and the rolling center line are on the same straight line. They are fitted into straight lines respectively, and the angles between the transverse reference line of the second rolling mill, the transverse reference line of the third rolling mill and the rolling center line are determined. When the angle between the two straight lines is 90°±0.03°, the next step can be carried out. Otherwise, the cause should be checked and it can only be carried out when it is confirmed to be correct. The coordinate system is established using the rolling center line and the geoid to measure the deviation value of the second rolling mill frame, roller table and saw.

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