Calibration table of inclinometer
By designing an inclinometer calibration table including horizontal axis, vertical horizontal axis and vertical column, the problem of increasing error of the inclinometer calibration table in the prior art is solved, and higher measurement accuracy and reading accuracy are achieved.
Patent Information
- Application Number
- CN202420603405.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-27
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-03-27
AI Technical Summary
During use, the existing inclinometer calibration table cannot be placed flat due to inaccurate position and cylinder appearance during use, resulting in increased errors.
A calibrator calibration table including horizontal axis, vertical horizontal axis and vertical column is designed. The use of a movable V-shaped fixture and magnifying glass of the horizontal axis clamp is ensured to the accurate reading of the top angle of the calibration table; at the same time, through the adjustment of the three-leg base and the use of the level bubble, the horizontal state and measurement accuracy of the calibration table are ensured.
It effectively reduces the errors of the calibration table during use, improves the measurement accuracy, and ensures the accuracy of the top angle and azimuth angle readings of the calibration table.
Smart Images
Figure CN222579307U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of inclinometers, in particular to an inclinometer calibration platform. Background Art
[0002] The inclinometer calibration bench is a calibration device used to verify the accuracy of the measuring instrument itself when the data error of the measuring instrument is large, or to adjust and compensate for the error of the instrument itself.
[0003] The conventional measurement method uses a traditional compass to compare the location during use, which can easily cause errors due to inaccurate placement. In addition, because the instrument itself is cylindrical in shape, it cannot be placed flat, resulting in inconsistent center of gravity and greater errors. Utility Model Content
[0004] The utility model aims to provide an inclinometer calibration platform to solve the problems in the prior art.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an inclinometer calibration table, comprising a horizontal axis, the horizontal axis is equipped with a horizontal axis positioning sleeve, the horizontal axis positioning sleeve is equipped with a vertical horizontal axis and a horizontal axis locking block; the left end of the horizontal axis is equipped with a vertex angle vernier caliper, a vertex angle scale ring and a handwheel in sequence, and the left end of the horizontal axis is located outside the handwheel and is equipped with a petal nut; the right end of the horizontal axis is equipped with a movable V-shaped clamp; the upper end of the vertical horizontal axis is equipped with a leveling fixing plate, and the lower end of the vertical horizontal axis is equipped with an azimuth vernier ring and an azimuth scale ring; it also includes a vertical column; a vertical horizontal shaft sleeve is installed in the vertical column, and a vertical axis stop screw and an azimuth scale ring positioning screw are installed on the outside of the vertical column.
[0006] Preferably, the lower portion of the vertical-horizontal shaft is inserted into a vertical-horizontal shaft sleeve.
[0007] Preferably, the vertical axis detent screw is provided with a detent handle.
[0008] Preferably, a triangular seat is installed at the bottom end of the vertical column, a horizontal adjustment screw is installed at the triangular seat, and an adjustment foot and a positioning sleeve are installed at the bottom end of the horizontal adjustment screw.
[0009] Preferably, the movable V-shaped clamp and the horizontal shaft are fixed by means of positioning screws and ingot nuts.
[0010] Preferably, a level bubble is installed in the level fixing plate, and a magnifying glass is installed on the level fixing plate above the vertex angle vernier caliper and the vertex angle scale ring.
[0011] Compared with the prior art, the utility model has the following beneficial effects: the horizontal shaft clamp end is composed of two movable V-shaped clamps, one of which is fixedly connected to the horizontal shaft, and the other independent clamp is fastened to the horizontal shaft through a wing nut; in order to correctly read the vertex angle scale of the calibration table, a movable magnifying glass is provided; the base of the magnifying glass has two pins, which can be fixed by inserting the pins into the two small holes on the top of the horizontal shaft when in use, and the vertex angle reading can be clearly read through the magnifying glass.
[0012] A tripod is installed at the bottom of the vertical column, and a horizontal adjustment screw is installed on the tripod. An adjustment foot and a positioning sleeve are installed at the bottom of the horizontal adjustment screw. The height of each foot of the base is adjusted by rotating the screw on the tripod with a horizontal adjustment wrench, and the base is adjusted to a horizontal state to ensure the measurement accuracy of the calibration table. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0014] Figure 1 It is a structural schematic diagram of the utility model;
[0015] Figure 2 It is a structural schematic diagram of the upper part of the utility model;
[0016] Figure 3 It is a structural schematic diagram of the triangular seat of the utility model.
[0017] In the figure: 1. Movable V-shaped clamp; 2. Horizontal axis; 3. Horizontal axis positioning sleeve; 4. Vernier caliper of top angle; 5. Vernier angle scale ring; 6. Petal nut; 7. Handwheel; 8. Leveling plate; 9. Vertical horizontal axis; 10. Vertical horizontal axis sleeve; 11. Vertical column; 12. Vertical axis driving screw; 13. Driving handle; 14. Horizontal axis locking block; 15. Azimuth vernier ring; 16. Azimuth scale ring; 17. Azimuth scale ring positioning screw; 18. Tripod; 19. Adjusting foot; 20. Positioning sleeve; 21. Horizontal adjustment screw; 22. Positioning screw; 23. Yuanbao nut; 24. Magnifying glass. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of 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. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents selected embodiments of the utility model.
[0019] See also Figure 1-3 In the embodiment of the utility model, an inclinometer calibration platform includes a horizontal axis 2, the horizontal axis 2 is installed with a horizontal axis positioning sleeve 3, the horizontal axis positioning sleeve 3 is installed with a vertical horizontal axis 9 and a horizontal axis locking block 14; the left end of the horizontal axis 2 is installed with a vertex angle vernier caliper 4, a vertex angle scale ring 5 and a handwheel 7 in sequence, and the left end of the horizontal axis 2 is located outside the handwheel 7 and is installed with a petal nut 6; the right end of the horizontal axis 2 is installed with a movable V-shaped clamp 1; the movable V-shaped clamp 1 and the horizontal axis 2 are fixed by a positioning screw 22 and a Yuanbao nut 23. A leveling fixing plate 8 is installed at the upper end of the vertical horizontal axis 9, and an azimuth vernier ring 15 and an azimuth scale ring 16 are installed at the lower end of the vertical horizontal axis 9; a level bubble is installed in the leveling fixing plate 8, and a magnifying glass 24 is installed on the leveling fixing plate 8 above the vertex angle vernier caliper 4 and the vertex angle scale ring 5.
[0020] It also includes a vertical column 11; a vertical horizontal shaft sleeve 10 is installed in the vertical column 11, and a vertical axis locking screw 12 and an azimuth scale ring positioning screw 17 are installed on the outer side of the vertical column 11; the lower part of the vertical horizontal axis 9 is inserted into the vertical horizontal shaft sleeve 10; the vertical axis locking screw 12 is installed with a locking handle 13; a triangular seat 18 is installed at the bottom end of the vertical column 11, and a horizontal adjustment screw 21 is installed on the triangular seat 18, and an adjustment foot 19 and a positioning sleeve 20 are installed at the bottom end of the horizontal adjustment screw 21.
[0021] The calibration table is mainly composed of a base, a vertical sleeve, a vertical axis, a horizontal axis, a clamp and accessories. All main parts are made of high-quality copper materials and are non-magnetic. The base of the calibration table is a tripod base. The height of each leg of the base can be adjusted by rotating the screws on the tripod base with a special horizontal adjustment wrench in the accessories. In order to ensure the measurement accuracy of the calibration table, the base must be adjusted to a horizontal state.
[0022] In the center of the tripod base is the vertical sleeve, with an azimuth dial installed on the top of the sleeve. The azimuth dial ranges from 0° to 360°, with each division being 2°, and the vernier reading can be measured to 0.2°. The zero position of the azimuth dial can be adjusted freely. Generally, after the calibration table is installed and debugged, the zero position of the azimuth dial should be aligned with the true north direction (magnetic north). There is a brake handle on the side of the vertical sleeve. After locking the handle, the vertical axis will be fixed and cannot rotate. If you want to adjust the azimuth of the calibration table, you should first unlock the brake handle.
[0023] The vertical shaft component is used in conjunction with the vertical sleeve and is in a detachable state when packed. Due to the very high processing accuracy, the gap between the vertical shaft and the vertical sleeve is very small. Therefore, when installing the calibration table, the vertical shaft needs to be gently placed into the vertical sleeve. After completion, the vertical shaft should be able to rotate smoothly and freely in the sleeve. Two mutually perpendicular level bubbles are embedded on the plane at the top of the vertical shaft component. There are scale lines on the glass shell of the level bubble. When the bubble is centered, it means that the bubble is in a horizontal state in this axis. The middle of the vertical shaft component is the horizontal axis of the calibration table. One end of the horizontal axis is the clamp, and the other end is the handwheel for adjusting the top angle. The top angle dial is also installed on the side of the horizontal axis handwheel. The standard dial range is -90° to 90° (customizable -180° to 180° specifications). Each division is 1°, and the vernier scale can be measured to 0.1°. The zero position of the vertex angle scale is precisely measured and calibrated by the manufacturer. It is fixed with screws and generally will not loosen. Users should not disassemble the scale, otherwise it will lead to loss of accuracy. If the scale is displaced or deformed for some reason, resulting in errors in the vertex angle measurement, it can be corrected with a scaler. A brake handle is also installed on the side of the vertical axis. When the handle is locked, the horizontal axis is fixed and the handwheel cannot be rotated. If you want to adjust the vertex angle of the calibration table, you should first unlock the brake handle.
[0024] The horizontal axis holder end consists of two "V"-shaped fixtures, one of which is fixedly connected to the horizontal axis, and the other is an independent fixture fastened to the horizontal axis through a wing nut. In order to correctly read the vertex angle scale of the calibration table, a movable magnifying glass is provided. The base of the magnifying glass has two pins. When in use, the pins can be inserted into the two small holes at the top of the horizontal axis to fix it. The vertex angle reading can be clearly read through the magnifying glass.
[0025] Directions:
[0026] When using the test bench, you should choose a spacious indoor environment with no magnetic materials around (at least no magnetic materials within 1 meter). It should be noted that the walls of reinforced buildings should also be considered as magnetic materials.
[0027] Assemble the components of the test bench, first install the tripod base on the vertical sleeve, and then slowly and smoothly put the vertical shaft into the vertical sleeve. It should be noted that in order to ensure the detection accuracy, the gap between the vertical shaft and the vertical sleeve is very small. The manufacturer recommends that you apply grease on the vertical shaft when installing it, which can make the vertical shaft rotate more smoothly.
[0028] Before using the calibration table, you should adjust the calibration table to a horizontal state (i.e. the vertical axis is completely perpendicular to the ground) before clamping any instrument. The adjustment method is as follows: Use a special horizontal adjustment wrench to rotate the screw on the tripod to adjust the height of the tripod. While adjusting the screw, observe the two level bubbles at the top of the vertical axis until the level bubble is adjusted to the middle of the scale line and the position of the level bubble remains unchanged when the vertical axis is rotated at will.
[0029] Place the pocket theodolite (geological compass) in the attachment on the plane at the top of the vertical axis, with the side of the theodolite close to the back of the "V"-shaped fixture on the horizontal axis, and calibrate the azimuth of the calibration table according to the azimuth indicated by the theodolite. After adjusting the zero position of the calibration table to the magnetic north direction, loosen the locking switch on the azimuth dial, align the 0° scale line on the dial with the 0° scale line on the vertical axis, and then lock the azimuth dial. Randomly rotate the calibration table for spot checks, and it should always be consistent with the reading of the pocket theodolite. If the two are consistent, the theodolite can be removed.
[0030] Clamp the inclinometer to be tested onto the calibration table. Note that the instrument should be close to one side of the "V"-shaped clamp fixed on the horizontal axis and the matching clamping wood block should be placed on the outside of the inclinometer probe. When clamping the instrument, its center of gravity should be close to the clamping part, then turn it to the vertical axis and observe the level bubble to check whether the calibration table has an impact on the plumb state of the vertical axis due to the weight. If necessary, finely adjust the tripod base screw until it meets the requirements.
[0031] After completing the above installation and debugging steps, you can start testing the inclinometer. After placing the inclinometer at a certain vertex angle and azimuth angle, the deviation between the two should be within the allowable error range of the inclinometer.
[0032] When observing the top angle / azimuth of the inclinometer, you should first lock the brake handle to fix the instrument. Otherwise, the displacement of the instrument may cause errors in the readings.
[0033] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. An inclinometer calibration platform, comprising a horizontal axis (2), characterized in that: The horizontal shaft (2) is installed with a horizontal shaft positioning sleeve (3), and the horizontal shaft positioning sleeve (3) is installed with a vertical horizontal shaft (9) and a horizontal shaft locking block (14); the left end of the horizontal shaft (2) is installed with a vertex angle vernier caliper (4), a vertex angle scale ring (5) and a hand wheel (7) in sequence, and the left end of the horizontal shaft (2) is located outside the hand wheel (7) and is installed with a petal nut (6); the right end of the horizontal shaft (2) is installed with a movable V-shaped clamp (1); A leveling fixing plate (8) is mounted on the upper end of the vertical-horizontal axis (9), and an azimuth cursor ring (15) and an azimuth scale ring (16) are mounted on the lower end of the vertical-horizontal axis (9); It also includes a vertical column (11); a vertical horizontal shaft sleeve (10) is installed inside the vertical column (11), and a vertical shaft stop screw (12) and an azimuth scale ring positioning screw (17) are installed outside the vertical column (11).
2. The inclinometer calibration platform according to claim 1, characterized in that: The lower part of the vertical horizontal shaft (9) is inserted into the vertical horizontal shaft sleeve (10).
3. The inclinometer calibration platform according to claim 1, characterized in that: The vertical axis detent screw (12) is provided with a detent handle (13).
4. The inclinometer calibration platform according to claim 1, characterized in that: A triangular seat (18) is installed at the bottom end of the vertical column (11), a horizontal adjustment screw (21) is installed at the triangular seat (18), and an adjustment foot (19) and a positioning sleeve (20) are installed at the bottom end of the horizontal adjustment screw (21).
5. The inclinometer calibration platform according to claim 1, characterized in that: The movable V-shaped clamp (1) and the horizontal shaft (2) are fixed via a positioning screw (22) and a nut (23).
6. The inclinometer calibration platform according to claim 1, characterized in that: A level bubble is installed in the level fixing plate (8), and a magnifying glass (24) is installed on the level fixing plate (8) above the vertex angle vernier caliper (4) and the vertex angle scale ring (5).