Rudder angle measuring device

Abstract

The utility model belongs to underwater vehicle field belongs to rudder plate angle measuring device, the utility model discloses a support, vertical board, angle disc, angle pointer, rudder plate fixed clamp and universal joint coupling, vertical board fixed setting on the support, angle disc rotatablely set up on vertical board, angle pointer rotatablely set up on the angle disc's center axis, rudder plate fixed clamp is used for fixing the rudder plate of measurement, the both ends of universal joint coupling are connected with rudder plate fixed clamp and angle pointer respectively, for the rotation movement transmission of rudder plate of measurement to angle pointer, the utility model research and development purpose is to aim at the low precision, low efficiency and the problem of relying on personnel experience that the angle ruler lofting measurement method of existing adoption exists, the utility model provides a kind of special measuring device, through universal joint coupling transmission rudder plate rotation and cooperate adjustable angle disc, realized the quick, accurate and direct measurement of rudder plate rotation angle not relying on artificial experience.

Description

Technical Field

[0001] This utility model relates to a rudder angle measuring device, belonging to the field of underwater vehicles. Background Technology

[0002] In the manufacturing, assembly, and maintenance of underwater vehicles (such as submarines, underwater robots, and torpedoes), the rotation angle of the rudder (or control blade) is a crucial technical parameter. The accuracy of the rudder angle directly affects the vehicle's maneuverability, stability, and trajectory. Therefore, rapid and accurate measurement of the actual rotation angle of the rudder is a key step in ensuring product quality and performance.

[0003] Currently, the industry generally uses traditional manual methods to measure the rudder angle, with the closest existing technology being the conventional angle gauge layout measurement method. The specific operation process of this method is as follows: First, the operator needs to use a large angle gauge or combination measuring tools to establish an angle reference plane on a fixed part of the aircraft (such as the hull or support); then, by manually comparing, scribing, or using auxiliary tools such as feeler gauges, the deflection angle of the rudder relative to this reference plane is indirectly calculated or measured.

[0004] However, this traditional measurement method has the following prominent technical drawbacks:

[0005] 1. Low measurement accuracy, making it difficult to meet high requirements: The process of manual layout and indirect calculation is prone to introducing multiple errors, including errors in establishing the reference surface, parallax, and tool fit errors. These accumulated errors result in limited accuracy of the final measurement results, making it difficult to meet the high precision requirements of modern underwater vehicles for rudder angle control (for example, often requiring an error within ±0.5°).

[0006] 2. Low testing efficiency and cumbersome process: The entire measurement process involves many steps and is time-consuming. From establishing a benchmark, repeated alignment, data reading to calculating the final angle, a significant amount of time and manpower is required, seriously affecting the progress of production or maintenance.

[0007] 3. High dependence on operator experience and poor consistency: The accuracy of this method heavily depends on the skill level and experience of the operators. Differences in operation between different personnel or even the same personnel under different conditions will directly lead to fluctuations in measurement results, making the measurement data lack reliable consistency and repeatability, which is detrimental to standardized operations and quality control.

[0008] Therefore, there is an urgent need to develop a new type of rudder angle measuring device to solve the above-mentioned technical problems. Utility Model Content

[0009] The purpose of this invention is to address the problems of low accuracy, low efficiency, and reliance on human experience in existing angle gauge-based surveying methods. This invention provides a dedicated measuring device that transmits rudder plate rotation via a universal joint coupling and, in conjunction with an adjustable angle disc, achieves rapid, accurate, and direct measurement of the rudder plate's rotation angle without relying on human experience. A brief overview of this invention is provided below to offer a basic understanding of certain aspects of it. It should be understood that this overview is not an exhaustive summary of the invention. It is not intended to identify key or essential parts of the invention, nor is it intended to limit the scope of the invention.

[0010] The technical solution of this utility model:

[0011] A rudder plate angle measuring device includes a support, a vertical plate, an angle disk, an angle pointer, a rudder plate fixing clamp, and a universal joint coupling. The vertical plate is fixedly mounted on the support. The angle disk is rotatably mounted on the vertical plate. The angle pointer is rotatably mounted on the central axis of the angle disk. The rudder plate fixing clamp is used to fix the rudder plate to be measured. The two ends of the universal joint coupling are respectively connected to the rudder plate fixing clamp and the angle pointer, and are used to transmit the rotational motion of the rudder plate to be measured to the angle pointer.

[0012] Preferably, the angle plate has angle markings, and the rotational position of the angle plate relative to the upright plate is adjustable and can be locked in place.

[0013] Preferably, it also includes a fixing screw, and the rudder plate fixing clamp is fastened to the rudder plate to be tested by the fixing screw.

[0014] Preferably, the angle pointer is assembled on the central axis of the angle disk by screws and washers.

[0015] Preferably, the universal joint coupling is a cross-type universal joint or a ball-cage type universal joint.

[0016] Preferably, the angle plate is rotatably connected to the upright plate via a central shaft and is provided with locking screws to fix its relative position to the upright plate after adjustment.

[0017] This utility model has the following beneficial effects:

[0018] 1. This utility model effectively overcomes the defects of traditional manual layout measurement by setting up a clamping component fixed to the rudder plate, a universal joint coupling for motion transmission and deviation compensation, and an adjustable angle dial and pointer reading mechanism, and realizes high-precision, high-efficiency, and low-dependency direct measurement of the rudder plate angle.

[0019] 2. This utility model directly transmits the rotation of the rudder plate through a mechanical connection, eliminating manual alignment and parallax errors, and realizing direct and accurate reading of angle values;

[0020] 3. This utility model enables rapid installation and one-click reading, eliminating tedious steps such as layout, marking, and calculation, and greatly shortening the testing time;

[0021] 4. This utility model uses a standardized and integrated device for measurement, which is simple and standardized to operate. Different personnel can obtain consistent and reliable measurement results, which is conducive to the standardization of quality control.

[0022] 5. The flexible connection characteristics of the universal joint coupling of this utility model can compensate for the installation position deviation between the rudder plate and the measuring device, enabling the device to adapt to rudder plates of various structural forms, thus improving its versatility and ease of use in the field. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the rudder angle measuring device;

[0024] Figure 2 This is a schematic diagram of a universal joint coupling.

[0025] In the diagram: 1-support, 2-vertical plate, 3-angle disc, 4-rudder plate fixing clamp, 5-fixing screw, 6-universal joint coupling, 7-angle pointer, 8-screw, 9-washer. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the present utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the present utility model.

[0027] The connections mentioned in this utility model are divided into fixed connections and detachable connections. Fixed connections (i.e., non-detachable connections) include, but are not limited to, conventional fixed connection methods such as folded connections, riveted connections, adhesive connections, and welded connections. Detachable connections include, but are not limited to, conventional disassembly methods such as threaded connections, snap-fit ​​connections, pin connections, and hinged connections. When a specific connection method is not explicitly defined, it is assumed that at least one existing connection method can always be found to achieve the function, and those skilled in the art can choose according to their needs. For example, a welded connection can be chosen for fixed connections, and a hinged connection can be chosen for detachable connections.

[0028] Specific implementation method one: Combining Figures 1-2This embodiment describes a rudder plate angle measuring device, which includes a support 1, a vertical plate 2, an angle disc 3, a rudder plate fixing clamp 4, a fixing screw 5, a universal joint coupling 6, an angle pointer 7, and screws 8 and washers 9 for assembling the pointer.

[0029] Support 1 serves as the mounting base for the entire device and can be made of a heavy-duty metal plate to provide stable support. Mounting holes can be provided at its bottom for easy bolting to a stable structure near the workbench or aircraft. Vertical plate 2 is welded vertically or bolted to one end of support 1, serving as the main support structure for the angle measurement section.

[0030] Angle disc 3 is rotatably mounted on the front of upright plate 2 via a central axis. Angle disc 3 is a disc with a precise annular angle scale, for example, a scale range of ±30°, with graduations of 1° or 0.5°. Angle disc 3 can rotate freely about its center relative to upright plate 2.

[0031] Angle pointer 7 is mounted on the central axis of angle disk 3 using screw 8 and washer 9. Screw 8 passes through the through hole in the center of angle disk 3 and engages with the threaded hole on the vertical plate 2 or the nut on the back, assembling angle disk 3 and angle pointer 7 together on the vertical plate 2, while ensuring that angle pointer 7 can rotate freely relative to angle disk 3. Washer 9 is used to reduce friction and make the pointer rotate more flexibly.

[0032] The rudder plate fixing clamp 4 is a fixture used to hold the edge of the rudder plate 10 to be measured. Its shape can be designed according to the cross-section of the rudder plate, for example, using a clamping block with an inward concave arc surface to increase the contact area and stability. By tightening the fixing screw 5, the rudder plate fixing clamp 4 can be firmly locked onto the rudder plate 10 to ensure that there is no relative movement between the two during the measurement process.

[0033] The core connecting component in this embodiment is the universal joint coupling 6. Its first end is fixed to a connecting arm of the rudder plate fixing clamp 4, and its second end is fixed to the tail extension shaft of the angle pointer 7. The universal joint coupling 6 is preferably a cross-type universal joint, which can compensate for direction within a certain angle range, thereby accurately transmitting the rotational motion of the rudder plate 10 to the angle pointer 7, while tolerating misalignment between the rudder plate fixing clamp 4 and the angle pointer 7 due to differences in installation position or rudder plate shape.

[0034] A more preferred technical solution is that the universal joint coupling 6 can also be a ball cage type constant velocity universal joint to provide smoother torque transmission and less rotational fluctuation. The rudder plate fixing clamp 4 can be equipped with a set of replaceable clamps of different sizes or shapes to adapt to rudder plates with different cross-sectional shapes such as planar rudders and airfoil rudders.

[0035] The working principle and measurement method are as follows:

[0036] First, fix the device using the support 1. Then, attach the rudder plate fixing clip 4 to the measuring part of the rudder plate 10 and tighten the fixing screw 5 to secure it to the rudder plate 10.

[0037] The second step is to perform a "zeroing" calibration. Manually rotate the rudder plate 10 to the designed zero position. At this time, due to the possible slight transmission backlash in the universal joint coupling 6, to eliminate the backlash error, gently rotate the angle disk 3 slightly in the direction of rotation of the rudder plate 10 until the backlash is felt to be eliminated. Then, keeping the rudder plate 10 stationary, rotate the angle disk 3 as a whole until the "0°" mark on it aligns with the tip of the angle pointer 7. Finally, tighten the locking screws on the side of the angle disk 3 to lock the relative position of the angle disk 3 and the vertical plate 2, completing the calibration.

[0038] The third step is to take measurements. The rudder plate 10 is rotated to the target working position. The rotation of the rudder plate 10 is transmitted to the angle pointer 7 via the rudder plate fixing clamp 4 and the universal joint coupling 6, causing the angle pointer 7 to rotate synchronously. At this time, the value indicated by the tip of the angle pointer 7 on the scale ring of the angle dial 3 is directly read; this value is the actual rotation angle of the rudder plate 10 relative to its zero position.

[0039] Through an integrated design of "rudder plate fixing - universal joint transmission - direct dial reading," the spatial angular displacement of the rudder plate is directly and without intermediate errors converted into scale readings on the angle dial. The introduction of the universal joint coupling is the key difference between this device and traditional rigid measuring tools. It effectively solves the engineering problem of difficulty in aligning the axis during on-site installation, giving the device excellent versatility and ease of operation. The entire measurement process can be completed quickly by only one person, with objective and high-precision results, significantly improving the efficiency of debugging and testing underwater vehicle rudder systems.

[0040] It should be noted that in the above embodiments, as long as the technical solutions are not contradictory, they can be arranged and combined. Those skilled in the art can exhaust all possibilities based on the mathematical knowledge of permutation and combination. Therefore, this utility model will not describe the technical solutions after permutation and combination one by one, but it should be understood that the technical solutions after permutation and combination have been disclosed by this utility model.

[0041] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A rudder plate angle measuring device, characterized in that: The device includes a support (1), a vertical plate (2), an angle disc (3), an angle pointer (7), a rudder plate fixing clamp (4), and a universal joint coupling (6). The vertical plate (2) is fixedly mounted on the support (1). The angle disc (3) is rotatably mounted on the vertical plate (2). The angle pointer (7) is rotatably mounted on the central axis of the angle disc (3). The rudder plate fixing clamp (4) is used to fix the rudder plate to be tested. The two ends of the universal joint coupling (6) are respectively connected to the rudder plate fixing clamp (4) and the angle pointer (7) to transmit the rotational motion of the rudder plate to be tested to the angle pointer (7).

2. The rudder plate angle measuring device according to claim 1, characterized in that: The angle plate (3) is provided with angle scales, and the rotation position of the angle plate (3) relative to the upright plate (2) is adjustable and can be locked and fixed.

3. The rudder plate angle measuring device according to claim 1, characterized in that: It also includes a fixing screw (5), and the rudder plate fixing clip (4) is fastened to the rudder plate to be tested by the fixing screw (5).

4. The rudder plate angle measuring device according to claim 1, characterized in that: The angle pointer (7) is assembled on the central axis of the angle disk (3) by screws (8) and washers (9).

5. The rudder plate angle measuring device according to claim 1, characterized in that: The universal joint coupling (6) is a cross-type universal joint or a ball cage type universal joint.

6. The rudder plate angle measuring device according to claim 1, characterized in that: The angle plate (3) is rotatably connected to the vertical plate (2) via a central shaft, and is provided with locking screws to fix its relative position to the vertical plate (2) after adjustment.

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