A device for correcting the magnetic north direction of a lead screw slider module

Abstract

The utility model discloses a correction device for the magnetic north direction of a screw slider module, which comprises: a theodolite, a rotating platform and a mounting platform rotatably arranged on the rotating platform, two groups of compass modules are arranged on the mounting platform, each group of compass modules comprises a linear fine-tuning platform and a compass, the linear fine-tuning platform is used to drive the compass to move linearly, a servo motor screw slider module is also installed on the mounting platform, the slider of the servo motor screw slider module slides along the axis B, the linear fine-tuning platform drives the compass to move in a direction perpendicular to the axis B, the pointers of the two compasses are located on the same axis A, the axis A is parallel to the axis B, and the axis center of the mounting position of the theodolite is located on the bisector of the axis A and the axis B. Compared with the prior art, the utility model realizes efficient and high-precision correction of the magnetic north direction of the servo motor screw slider module, and can be applied to both the customer's on-site environment and the laboratory environment.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic north direction calibration of a lead screw slider module in a satellite navigation displacement measurement system, in particular to a magnetic north direction calibration device for a lead screw slider module. Background Art

[0002] With the rapid development of satellite-related technologies, remote displacement measurement systems composed of satellite navigation system measurement receivers have been widely used in the field of displacement or deformation measurement of large buildings such as rail transit, bridges, tunnels, dams, slopes, etc. When calibrating the satellite navigation displacement measurement system, the axial direction of the north-south motion axis of the linear module in the calibration device (used to calibrate the satellite navigation displacement measurement system) must be parallel to the magnetic north direction. The correction accuracy of the magnetic north direction of the motion axis is directly related to the accuracy of the calibration device and the calibration accuracy of the satellite navigation displacement measurement system. Currently known magnetic north direction corrections of the motion axis of the linear motion module are all based on manual visual observation of a geological compass. For example, a patent application with publication number CN118129676A discloses a calibration device and calibration method for a satellite navigation remote displacement measurement system, which uses manual observation of a compass for calibration. This method has the following defects:

[0003] (1) The above calibration method is based on manual visual inspection. The operator manually adjusts the angle deviation between the linear module motion axis and the magnetic north direction pointed by the geological compass needle. Since the angle deviation and the parallelism between the two axes are manually visually inspected, there are problems of low accuracy and poor repeatability.

[0004] (2) Since the magnetic declination may change at any time, when the angle deviation between the linear module motion axis and the magnetic north direction pointed by the geological compass needle exceeds the allowable error, the angle deviation value needs to be calibrated at any time. However, since it is based on manual visual inspection, the operator manually adjusts the angle deviation value between the two axes, which leads to low work efficiency and high labor costs.

[0005] (3) When applied in the field of metrological traceability, the measured parameters and measurement methods must be traceable. If it is done by manual visual inspection, it will not be possible to trace the measurement value. Utility Model Content

[0006] The utility model provides a device for correcting the magnetic north direction of a screw slider module, which is used to solve the problems of low precision, low efficiency and difficulty in tracing the magnetic north direction of the screw slider module when manually visually correcting the magnetic north direction of the screw slider module.

[0007] The utility model provides a correction device for the magnetic north direction of a lead screw slider module, comprising: a theodolite, a rotating platform and a mounting platform rotatably arranged on the rotating platform, two groups of compass modules are arranged on the mounting platform, each group of compass modules comprises a linear fine-tuning platform and a compass, the linear fine-tuning platform is used to drive the compass to move linearly, a servo motor lead screw slider module is also installed on the mounting platform, a slider of the servo motor lead screw slider module slides along an axis B, the linear fine-tuning platform drives the compass to move in a direction perpendicular to the axis B, two pointers of the compasses are located on the same axis A, the axis A is parallel to the axis B, and the axis center of the mounting position of the theodolite is located on the bisector of the axis A and the axis B.

[0008] Preferably, each group of compass modules further includes a rotating fine-tuning platform, and the rotating fine-tuning platform is used to rotate the compass.

[0009] Preferably, the rotary fine-tuning platform is arranged between the linear fine-tuning platform and the compass.

[0010] Preferably, a plurality of height adjustment mechanisms are provided at the bottom of the rotating platform.

[0011] Preferably, there is a workbench below the height adjustment mechanism, and the theodolite is installed on the workbench.

[0012] Preferably, the compass is a geological compass.

[0013] Preferably, the theodolite is a digital theodolite.

[0014] Preferably, the height adjustment mechanism comprises a support foot and a support column, the support column is fixed to the bottom of the rotating platform, and the support foot is threadedly connected to the lower end of the support column.

[0015] Preferably, the mounting platform is a disc.

[0016] Preferably, there are three height adjustment mechanisms.

[0017] Compared with the prior art, the utility model realizes efficient and high-precision correction of the magnetic north direction of the servo motor lead screw slider module, and the correction device realizes modular design, reducing the difficulty of processing parts. It can be applied not only in the customer's on-site environment but also in the laboratory environment, improving the convenience of assembly, scalability, and economic applicability of the correction device. The correction device realizes the traceability of the value, and traces the magnetic north pointing deviation of the linear motion module to the geological compass and the digital level, effectively ensuring the accuracy and scientificity of the magnetic north correction. After relevant correction tests, the correction device of the utility model has good repeatability and high precision in magnetic north correction, so that the north pointing error of the servo motor lead screw slider module can be better than ±0.5°. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Reference numerals:

[0021] 1. Theodolite, 2. Rotating platform, 3. Mounting platform, 4. Linear fine-tuning platform, 5. Compass, 6. Servo motor lead screw slider module, 061. Slider, 062. Guide rail, 7. Rotating fine-tuning platform, 8. Height adjustment mechanism, 9. Workbench, a. Axis, 100. Compass module. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See attached Figure 1The present embodiment provides a correction device for the magnetic north direction of a lead screw slider module, comprising: a theodolite 1, a rotating platform 2, and a mounting platform 3 rotatably arranged on the rotating platform 2. Two groups of compass modules 100 are arranged on the mounting platform 3. Each group of compass modules 100 includes a linear fine-tuning platform 4 and a compass 5. The linear fine-tuning platform 4 is used to drive the compass 5 to move linearly. A servo motor lead screw slider module 6 is also installed on the mounting platform 3. The slider 061 of the servo motor lead screw slider module 6 slides along the axis B. The linear fine-tuning platform 4 drives the compass 5 to move in a direction perpendicular to the axis B. The pointers of the two compasses 5 are located on the same axis A. The axis A is parallel to the axis B. The axis a of the installation position of the theodolite 1 is located on the bisector of the axis A and the axis B. The utility model adopts a pair of compasses 5 as a north-pointing standard, which effectively improves the correction accuracy. The straightness of the axis A formed by a pair of pointers is observed through the theodolite 1, and the linear fine-tuning platform 4 is quickly adjusted so that the two pointers are accurately located on the axis A, which effectively ensures the correction accuracy. The theodolite 1 is used to observe the parallelism of the axis A and the axis B formed by the motion axis of the servo motor lead screw slider module 6, and the rotating platform 2 is used to quickly adjust the axis A to be parallel to the axis B, which effectively improves the north-pointing correction accuracy of the motion axis of the servo motor lead screw slider module 6. The utility model adopts a modular design, which can meet both the customer's on-site environment and the experimental environment conditions, improves the convenience of the correction processing and assembly, and improves the economy. Secondly, the traceability of the measurement value is achieved, and the magnetic north pointing deviation of the linear motion module is traced back to the compass and level.

[0024] As another embodiment of the present utility model: each compass module 100 also includes a rotating fine-tuning platform 7, which is used to rotate the compass 5. At the debugging site, it is found that the errors in installation or production can be eliminated by rotating the compass 5 to ensure that the two pointers are accurately located on the axis A.

[0025] An implementation manner of the rotary fine-tuning platform 7 : the rotary fine-tuning platform 7 is arranged between the linear fine-tuning platform 4 and the compass 5 , and the linear fine-tuning platform 4 moves the compass 5 by moving the rotary fine-tuning platform 7 .

[0026] As another embodiment of the present invention: a plurality of height adjustment mechanisms 8 are provided at the bottom of the rotating platform 2, and the levelness of the rotating platform 2 is adjusted by the height adjustment mechanisms 8 to ensure that the compass 5 and the servo motor lead screw slider module 6 are installed stably. Specifically, there are three height adjustment mechanisms 8.

[0027] As another implementation of the present utility model: a workbench 9 is provided below the height adjustment mechanism 8 , and the theodolite 1 is installed on the workbench 9 .

[0028] As another implementation manner of the present utility model: the compass 5 is a geological compass, and the theodolite 1 is a digital theodolite.

[0029] An implementation of the height adjustment mechanism 8: The height adjustment mechanism 8 includes a support foot and a support column, the support column is fixed to the bottom of the rotating platform 2, and the support foot is threadedly connected to the lower end of the support column. The height of the rotating platform 2 at the support foot is adjusted by rotating the support foot.

[0030] Specifically, the mounting platform 3 is a disc.

[0031] The utility model provides a method for using a device for correcting the magnetic north direction including the above-mentioned lead screw slider module, comprising the following steps:

[0032] Step 1: Install two sets of compass modules 100 on the installation platform 3, and set two linear fine-tuning platforms 4 in parallel. Adjust the position of the compass 5 through the linear fine-tuning platform 4 so that its two pointers are initially located on the axis A. This is because the compass 5 needs to be adjusted through the linear fine-tuning platform 4, so the positional relationship between the two is uncertain; during the early installation, make the two pointers roughly on the same straight line. The servo motor lead screw slider module 6 is installed on the installation platform 3, and the slider 061 of the servo motor lead screw slider module 6 slides along the axis B, and the straight line where the guide rail 062 is located is the axis B; the movement direction of the compass 5 on the linear fine-tuning platform 4 is perpendicular to the axis B, so that the axis A and the axis B are initially parallel, that is, the axis A and the axis B are roughly in a parallel state, and the theodolite 1 is installed on the installation platform 3, so that the installation position axis a of the theodolite 1 is on the bisector of the axis A and the axis B; the utility model has a simple structure and adopts a modular design. After the compass 5 is installed, the servo motor lead screw slider module 6 to be calibrated can be installed. The installation is simple and convenient, which can well meet the customer's on-site environment, and of course can also meet the experimental environment conditions, thereby improving the convenience of calibration processing and assembly and improving the economy.

[0033] Step 2: Observe through the theodolite 1 whether the pointers of the two compasses 5 are in the same straight line. If not, move the compass 5 through the straight line fine-tuning platform 4 so that the pointers of the two compasses 5 are in the same straight line. At this time, the two pointers are precisely located on the axis A. In this step, with the help of the theodolite 1, the compass 5 is moved so that the two pointers are precisely located in the same straight line, thereby effectively improving the correction accuracy. This adjustment method is simple and convenient.

[0034] Step 3: Observe the pointer of the compass 5 and the guide rail 062 on the servo motor lead screw slider module 6 through the theodolite 1 to check whether the axis A and the axis B are in a parallel state. If they are not in a parallel state, the axis A and the axis B are parallel by rotating the mounting platform 3. In the process of rotating the mounting platform 3, since the pointer always points to the north, the direction of the axis A will not change, so the axis A and the axis B can be made parallel by adjusting the direction of the axis B. In this step, with the help of the theodolite 1, the axis A and the axis B are made parallel by rotating the mounting platform 3, so that the correction accuracy can be effectively improved. This adjustment method is simple and convenient.

[0035] Step 4: The servo motor lead screw slider module 6 is working, and then the theodolite 1 is used to observe whether the axis A is parallel to the axis B. If not, the mounting platform 3 is rotated to make the axis A and the axis B parallel, thereby completing the correction of the magnetic north direction of the motion axis of the servo motor lead screw slider module 6. When the servo motor lead screw slider module 6 to be calibrated is working, the utility model can still make the axis A and the axis B parallel by rotating the mounting platform 3 with the help of the theodolite 1, thereby further ensuring the correction accuracy.

[0036] Among them, in step 2, when the two pointers are not in the same straight line, the two pointers can be accurately located on the axis A by rotating the compass 5 by rotating the fine-tuning platform 7 as needed. At the debugging site, it is found that the errors in installation or production can be eliminated by rotating the compass 5 to ensure that the two pointers are accurately located on the axis A.

[0037] In step 1, before the compass module 100 is installed on the installation platform 3, the installation platform 3 is horizontally adjusted by adjusting the height adjustment mechanism 8. Specifically, the height of the rotating platform 2 at the support foot is adjusted by rotating the support foot, so that the installation platform 3 is horizontally adjusted.

[0038] The specific installation process of the calibration device in step 1 is:

[0039] Ⅰ. The mounting platform 3 is mounted on the rotating platform 2, and then the rotating platform 2 drives the mounting platform 3 to rotate;

[0040] II. Three height adjustment mechanisms 8 are installed on the lower end surface of the rotating platform 2 and placed on a workbench 9;

[0041] III. The compass 5 is installed directly above the rotary fine-tuning platform 7, and the rotary fine-tuning platform 7 is installed directly above the linear fine-tuning platform 4;

[0042] IV. The compass module 100 consisting of the compass 5, the rotary fine-tuning platform 7 and the linear fine-tuning platform 4 is installed on the installation platform 3;

[0043] V. Install another set of compass modules 100 on the installation platform 3 through steps III and IV;

[0044] VI. The north direction of the compass 5 in one compass module 100 is on a straight line with the north direction of the compass 5 in another compass module 100, and the axis formed by this straight line is defined as axis A; wherein the axis directions of the two linear fine-tuning platforms 4 are installed perpendicular to the axis A;

[0045] VII. The servo motor lead screw slider module 6 is installed on the installation platform 3. The linear motion axis of the slider 061 on the servo motor lead screw slider module 6 when working is defined as axis B. The compass module 100 and the servo motor lead screw slider module 6 need to keep axis A and axis B initially parallel during installation;

[0046] VIII. The theodolite 1 is placed on the other side of the workbench 9, and each component on the installation platform 3 can be clearly and conveniently observed from its working window.

[0047] The correction device provided by the utility model has the following beneficial effects:

[0048] (1) Based on the consideration of metrological characteristics, the calibration device of the utility model adopts a modular design, which can meet both the customer's on-site environment and the experimental environment conditions, improves the convenience of calibration processing and assembly, and improves the economy.

[0049] (2) The calibration device of the utility model adopts a pair of geological compasses 5 as north reference standards, which effectively improves the calibration accuracy;

[0050] (3) The calibration device of the utility model uses a digital theodolite 1 to observe the straightness of the axis A formed by a pair of geological compasses 5 pointing north, which effectively ensures the calibration accuracy;

[0051] (4) The correction device of the utility model uses a digital theodolite 1 to observe the parallelism of the axis A formed by the two geological compasses 5 pointing north and the axis B formed by the movement axis of the screw slider module 061, which effectively improves the correction accuracy of the north pointing of the movement axis of the servo motor screw slider module 6;

[0052] (5) The geological compass 5 in the utility model can be precisely fine-tuned in installation posture through the rotary fine-tuning platform 7 and the linear fine-tuning platform 4, thereby effectively ensuring the calibration accuracy;

[0053] (6) The servo motor screw slider module 6 in the utility model can be precisely fine-tuned in installation posture through the rotating platform 2, thereby effectively ensuring the calibration accuracy;

[0054] (7) The calibration device of the utility model can realize fast and accurate north-pointing fine adjustment of the 6-axis of the servo motor lead screw slider module, and can make its north-pointing error better than ±0.5°;

[0055] (8) During the calibration test, when the magnetic declination at the calibration location changes, and the north direction of the axis of the servo motor lead screw slider module 6 needs to be adjusted, the calibration of the utility model can quickly and accurately implement the relevant servo motor lead screw slider module 6 adjustment. Specifically, with the help of the theodolite 1, the two pointers are accurately located on the same straight line by moving the compass 5, and then with the help of the theodolite 1, the axis A is parallel to the axis B by rotating the mounting platform 3. Finally, when the servo motor lead screw slider module 6 is working, the theodolite 1 is used to observe whether the axis A is parallel to the axis B. If not, the mounting platform 3 is rotated to make them parallel.

[0056] (9) The correction device and calibration method of the utility model can trace the correction error of the north pointing to the geological compass 5 and the digital theodolite 1, effectively ensuring the traceability of their values.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A device for correcting the magnetic north direction of a lead screw slider module, characterized in that: include: A theodolite, a rotating platform and a mounting platform rotatably arranged on the rotating platform, two groups of compass modules are arranged on the mounting platform, each group of compass modules includes a linear fine-tuning platform and a compass, the linear fine-tuning platform is used to drive the compass to move linearly, a servo motor lead screw slider module is also installed on the mounting platform, the slider of the servo motor lead screw slider module slides along the axis B, the linear fine-tuning platform drives the compass to move in a direction perpendicular to the axis B, the pointers of the two compasses are located on the same axis A, the axis A is parallel to the axis B, and the axis center of the mounting position of the theodolite is located on the bisector of the axis A and the axis B.

2. The magnetic north direction correction device of the screw slider module according to claim 1, characterized in that: Each compass module group also includes a rotation fine-tuning platform, and the rotation fine-tuning platform is used to rotate the compass.

3. The magnetic north direction correction device of the screw slider module according to claim 2, characterized in that: The rotary fine-tuning platform is arranged between the linear fine-tuning platform and the compass.

4. The magnetic north direction correction device of the screw slider module according to claim 1, characterized in that: A plurality of height adjustment mechanisms are arranged at the bottom of the rotating platform.

5. The magnetic north direction correction device of the lead screw slider module according to claim 4, characterized in that: A workbench is provided below the height adjustment mechanism, and the theodolite is installed on the workbench.

6. The magnetic north direction correction device of the screw slider module according to claim 1, characterized in that: The compass is a geological compass.

7. The magnetic north direction correction device of the screw slider module according to claim 5, characterized in that: The height adjustment mechanism comprises a supporting foot and a supporting column, wherein the supporting column is fixed to the bottom of the rotating platform, and the supporting foot is threadedly connected to the lower end of the supporting column.

8. The magnetic north direction correction device of the screw slider module according to claim 1, characterized in that: The theodolite is a digital theodolite.

9. The magnetic north direction correction device of the screw slider module according to claim 1, characterized in that: The mounting platform is a disc.

10. The magnetic north direction correction device of the lead screw slider module according to claim 4, characterized in that: There are three height adjustment mechanisms.

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