Multifunctional mechanical ocean current meter flow direction verification compass

Abstract

The invention discloses a multifunctional mechanical ocean current meter flow direction verification compass, which comprises a base, a support column and a table body, and is characterized in that the base is a solid disc and is used for supporting the whole device and keeping the stability of the device; the supporting column is connected with the base and the table body, a circular groove is formed in the table body, the inner disc is installed in the groove, and scales are engraved on a circle of the edge of the table body. The inner disc is arranged in the groove of the table body and is stably connected with the groove in the table body through a bearing device, and the inner disc serves as a main body structure for bearing and supporting other components and is designed to be an upper surface with an ocean current meter support mounting hole. And the upper surface of the inner disc is provided with a mounting part for mounting a handle, a micro gradienter, a reading device, a compass and an ocean current meter mounting table. According to the invention, by integrating the slot fast-assembly self-alignment system and the magnetic coding digital display system, a better scheme for calibrating the flow direction of the ocean current meter is realized; a non-contact encoder is formed by a bearing integrated magnetic ring and a table body fixing chip, and parallax and scale estimation and reading errors can be eliminated.

Description

Technical Field

[0001] This invention belongs to the field of ocean current measurement technology, and in particular relates to a multifunctional mechanical ocean current meter flow direction calibration compass. Background Technology

[0002] Ocean currents refer to the large-scale, relatively stable flow of seawater. They are one of the most common forms of seawater movement, playing a crucial role in global climate stability and ecological balance, while also directly impacting the lives and production of coastal residents and the development and utilization of the ocean. Accurate ocean current field data helps scientists better understand and simulate climate systems, improving the accuracy of climate predictions. The verification / calibration of ocean current meters is mostly carried out in the current meter calibration tanks of water conservancy departments. Since current meter calibration tanks can only verify / calibrate flow velocity, patent CN106526236A proposes a method for verifying flow direction using a brass compass. This method is quick and simple, but its calibration tools are bulky and crude. Because the compass is made of brass, corrosion in the air can affect the accuracy of the verification and may even cause the compass's rotating components to jam. Furthermore, the support structure for placing the mechanical ocean current meter on the calibration compass lacks a fixed structure, often introducing additional errors during testing and reading. Summary of the Invention

[0003] The purpose of this invention is to provide a multifunctional mechanical current meter flow direction calibration compass to solve the above-mentioned problems.

[0004] To achieve the above objectives, the present invention provides the following solution: a multifunctional mechanical current meter flow direction calibration compass, comprising: a base, a support column, and a table body. The base is a solid disc used to support the entire device and maintain its stability. The support column connects the base and the table body. The table body has a circular groove in which an inner disc is installed. The edge of the table body is engraved with graduations.

[0005] Preferably, acrylic sheet is selected as the material for the base, support, and table body.

[0006] The inner plate is placed within a recess in the table body and securely connected to the recess via a bearing assembly. The specific installation method is as follows: The bearing assembly is designed with an outer ring and an inner ring. The outer ring is slightly larger than the inner diameter of the table body recess, and the inner plate is slightly larger than the bearing inner ring to achieve an interference fit. During installation, the outer ring of the bearing assembly is forcibly pressed into the table body recess. Due to the dimensional difference, a tight contact pressure is generated between the outer ring and the inner wall of the recess, ensuring that the inner plate will not easily loosen or shift due to external forces after installation. During installation, the inner plate is forcibly pressed into the bearing inner ring. Due to the dimensional difference, a tight contact pressure is generated between the inner plate and the bearing inner ring, ensuring that the inner plate is firmly fixed to the bearing inner ring and will not easily loosen or shift due to external forces.

[0007] The table body groove and inner plate are designed with appropriate shape and size to accommodate the bearing assembly and allow it to rotate freely, while ensuring that an effective interference fit is formed between the outer ring of the bearing and the groove, and between the inner plate and the inner ring of the bearing.

[0008] Furthermore, the inner disc, serving as the main structure for supporting and carrying other components, is characterized by its upper surface having mounting holes for the current meter bracket. This upper surface is used to mount the bracket and other necessary components, ensuring the inner disc can rotate smoothly within the table's recessed area.

[0009] On the upper surface of the inner disc, there is a mounting section for mounting the handle, miniature level and reading device, compass, and current meter mounting platform. The mounting section can be a boss, threaded hole, slot, or any other shape and size suitable for connecting the current meter bracket.

[0010] The handle is designed to fit the shape and size of the mounting part to ensure that the handle can be securely installed on the inner plate.

[0011] The current meter mounting platform is designed with a shape and size that are compatible with the mounting section to ensure that the current meter mounting platform can be securely installed on the inner plate.

[0012] The connection between the current meter bracket and the inner plate can be a threaded connection, a snap-fit ​​connection, an adhesive connection, welding, or any other reliable connection method. The choice of connection method should take into account the stability of the current meter bracket, ease of installation and disassembly, and the rotational performance of the inner plate.

[0013] The axis of the current meter mounting platform should pass through the center of the table body to facilitate accurate readings.

[0014] The miniature level and reading device are mounted on the inner plate mounting part, and can be connected by reliable methods such as threaded connection, snap-fit ​​connection, adhesive connection, welding, etc.

[0015] To further enhance the stability of the connection between the current meter mounting platform and the inner plate, adhesives can be applied to the contact surfaces of the mounting part and the bracket, and elastic washers can be installed to enhance the stability of the connection.

[0016] The top or specific sections of the current meter mounting platform can be designed with interfaces for mounting other equipment or components, such as threaded holes and slots. These interfaces allow the bracket to support and accommodate various types of equipment or components, meeting diverse usage requirements.

[0017] To give this invention broader and more practical functions, a bench vise is further installed on top of or at a specific location on the current meter mounting platform, along with a retractable support to ensure stable fixation of the workpiece and precise operation. The mounting platform itself can also be disassembled as a whole, allowing for the use of appropriate mounting platforms when testing different instruments. Furthermore, to expedite the testing of commonly available SLC 9-2 and Model 106 mechanical current meters, SLC 9-2 and Model 106 mounting platforms, respectively, are designed to be placed on the inner plate, facilitating rapid installation and placement of the current meters.

[0018] Typically, a bench vise is installed at the top center of the current meter bracket to facilitate the placement and clamping of the workpiece.

[0019] Furthermore, to address the parallax error and inefficiency associated with manual scale reading, and to improve the accuracy and automation of flow direction verification, this invention integrates a high-precision angle measurement system. The angle measurement system includes:

[0020] A magnetic ring that is fixedly installed on the inner disk or the inner ring of the bearing and rotates synchronously with it;

[0021] A metal housing is fixedly installed around the bearing but not in contact with it to prevent the instrument's own magnetic field from affecting the detection.

[0022] A magnetic induction chip is fixedly installed at the center of the bottom of the groove of the table body, maintaining a constant tiny air gap with the magnetic ring and facing it directly, with the central axis of the magnetic induction chip coinciding with the center of the table body;

[0023] A main control circuit board is installed inside the support or table, and the main control circuit board is electrically connected to the magnetic induction chip;

[0024] A display screen mounted on a support or table, the display screen being electrically connected to the main control circuit board, is used to display the inner disk rotation angle value measured by the magnetic induction chip in real time;

[0025] A zero-position calibration button is provided on the support or table body. The zero-position calibration button is electrically connected to the main control circuit board and is used to set the current angle as the display zero-position reference point after aligning the 0° scale of the table body with due north using a compass.

[0026] The magnetic ring and the magnetic induction chip constitute an absolute magnetic rotary encoder.

[0027] The advantages of the multifunctional mechanical current meter direction calibration compass of this invention are:

[0028] This invention achieves a superior solution for ocean current meter direction verification by integrating a slot quick-release self-alignment system and a magnetic encoding digital display system.

[0029] The mechanical coupling between the inner plate slot and the quick-release clamp forces the current meter axis to coincide with the rotation center, completely eliminating the alignment deviation during manual installation. At the same time, the introduction of a bench vise mounting table greatly increases the number of calibrable models.

[0030] A non-contact encoder is constructed by using a bearing-integrated magnetic ring and a chip fixed to the table body, which outputs an angle value with a resolution of 0.1° in real time, eliminating parallax and scale estimation errors.

[0031] The quick-connect slots replace the traditional cumbersome installation process, reducing installation time by 70%. Combined with one-click zero-position calibration and digital display automatic recording, the single test cycle is reduced by 50%.

[0032] The acrylic body is rust-resistant, and the magnetic coding is resistant to moisture interference, ensuring long-term reliable operation in humid environments. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other similar or related designs can be obtained based on these drawings without creative effort, and all such designs fall within the scope of protection of the present invention.

[0034] Figure 1 This is a schematic diagram of the overall structure of a multifunctional mechanical current meter flow direction calibration compass of the present invention;

[0035] Figure 2 This is an overall cross-sectional view of a multifunctional mechanical current meter flow direction calibration compass of the present invention;

[0036] Figure 3 for Figure 2 The AA section shown;

[0037] Figure 4 The diagram shows a bench vise, where (a) is the left view of the bench vise, (b) is the top view of the bench vise, and (c) is the right view of the bench vise.

[0038] Figure 5 A schematic diagram of the calibration compass with a mounting platform suitable for the SCL 9-2 mechanical current meter installed.

[0039] Figure 6 A schematic diagram of a calibration compass mounted on a mounting platform suitable for a Model 106 mechanical current meter.

[0040] In the diagram, 1. Support column; 2. Table body; 3. Inner plate; 4. Current meter mounting platform; 5. Telescopic bracket; 6. Bench vise; 7. Handle; 8. Level and reading device; 9. Bracket slide; 10. Compass; 11. Bearing; 12. SLC 9-2 mounting platform; 13. Model 106 mounting platform. Detailed Implementation

[0041] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] like Figures 1-4 As shown, the support column 1 is connected to the table body 2 via a threaded connection structure, serving to support the main body of the device and adjust the levelness of the tabletop. The table body 2 has a circular groove for mounting the inner plate. Angle scale lines are engraved on the edge of the table body 2 for reading during experiments. The outer ring of the bearing 11 is installed inside the groove with an interference fit, and the inner plate 3 is installed on the inner ring of the bearing with an interference fit.

[0043] Furthermore, the inner plate 3 has a mounting section for the current meter mounting platform 4 and the handle 7. The bracket 4 serves to install the current meter tooling, and the handle 7 facilitates the application of force when rotating the compass.

[0044] Before use, place the device on a stable surface. Adjust the length of the three branches of the support column 1 to make the table body 2 and the inner plate 3 level, and confirm that the device is level by checking the miniature level and reading device 8. If it is not level, continue to adjust the support column 1 until the miniature level and reading device 8 show that it is level. Use the compass 10 to align the 0° mark on the table body with due north.

[0045] After aligning the 0° mark on the table with the compass to true north, use the level and reading device 8 to set the current angle as the zero reference point.

[0046] When using this device to conduct flow direction testing experiments, if the detection instrument is an SLC 9-2 or Model 106 mechanical current meter, then use the matching SLC 9-2 mounting platform (12) or Model 106 mounting platform (13) respectively, see Figures 5-6 Install it on the inner plate 3, and then place the instrument to be tested on the corresponding mounting platform for measurement; if the measuring instrument model is not SLC 9-2 or Model 106, install the current meter mounting platform 4 on the inner plate 3, and then use the vise 6 to clamp the current meter to be tested along the parallel direction of the table. During the clamping process, the current meter to be tested is leveled by the telescopic bracket 5. During the clamping process, the telescopic bracket 5 can slide along the slot direction in the slide groove 9 to clamp and level the current meter to be tested. It is necessary to ensure that the axis of the current meter is parallel to the horizontal plane to ensure the accuracy of subsequent measurements.

[0047] After clamping is completed, start the current meter and its supporting system, and record the current meter direction reading with the help of the level and reading device 8.

[0048] After completing the reading at 0°, use handle 7 to rotate the inner disc 3 to rotate the current meter. Rotate it a certain degree according to the experimental requirements and record the current meter's directional degree.

[0049] Repeat the rotation and count multiple times until the flow direction test experiment is completed.

[0050] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention shall fall within the protection scope defined by the claims of the present invention.

Claims

1. A multifunctional mechanical current meter flow direction calibration compass, characterized in that: The device includes a base, a support column, and a table. The base is a solid circular disc used to support the entire device and maintain its stability. The support column connects the base and the table. The table has a circular groove in which an inner disc is installed. The edge of the table is engraved with graduations. The inner disc is securely connected to the groove on the table via a bearing device. The outer diameter of the bearing device is slightly larger than the inner diameter of the groove on the table, and the inner disc is slightly larger than the inner diameter of the bearing to achieve an interference fit. On the upper surface of the inner disc, there is a mounting section for mounting a handle, a miniature level and reading device, a compass, and a current meter mounting platform. The axis of the current meter mounting platform should pass through the center of the table to facilitate accurate readings. The miniature level and reading device are mounted on the inner disc mounting section.

2. The multifunctional mechanical current meter direction calibration compass according to claim 1, characterized in that: The base, support, and table body are made of acrylic.

3. The multifunctional mechanical current meter direction calibration compass according to claim 1, characterized in that: Methods to enhance connection stability include applying adhesive to the contact surfaces of the mounting section and the bracket, and installing elastic washers.

4. A multifunctional mechanical current meter direction calibration compass according to claim 1, characterized in that: Install a bench vise on the top or a specific location of the current meter mounting platform, along with a retractable support, to ensure stable fixation of the workpiece and precise operation.

5. A multifunctional mechanical current meter direction calibration compass according to claim 1, characterized in that: A high-precision angle measurement system is configured, including: a magnetic ring fixedly installed on the inner disk or the inner ring of the bearing and rotating synchronously with it; a metal shell fixedly installed around the bearing but not in contact with it to prevent the instrument's own spontaneous magnetic field from affecting the detection; a magnetic induction chip fixedly installed at the center of the bottom of the table body groove, maintaining a constant tiny air gap with the magnetic ring and facing it, the central axis of the magnetic induction chip coinciding with the center of the table body; a main control circuit board located in the support column or the table body, the main control circuit board being electrically connected to the magnetic induction chip; a display screen located on the support column or the table body, the display screen being electrically connected to the main control circuit board, used to display the inner disk rotation angle value measured by the magnetic induction chip in real time; a zero-position calibration button located on the support column or the table body, the zero-position calibration button being electrically connected to the main control circuit board, used to set the current angle as the display zero-position reference point after aligning the 0° scale of the table body with due north using a compass; the magnetic ring and the magnetic induction chip constitute an absolute magnetic rotary encoder.

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