A blade swing angle detection mechanism

Abstract

This invention provides a blade oscillation angle detection mechanism, belonging to the field of aero-engine technology. The mechanism includes a fixed base plate with a slide rail on its top. A sliding base plate is slidably connected within the sliding base plate. A detection component is located on the top of the sliding base plate, with a gripper at one end and an angle sensor at the other. The detection component comprises a servo motor, a rotating platform, a first shaft, a first coupling, a second coupling, bearings, a first rotating shaft, a second shaft, and a second rotating shaft connected together. This invention provides a blade oscillation angle detection mechanism that solves the problems of large errors, unstable measurement values, the need for manual recording, difficulty in data traceability, and low efficiency in current measurement methods.

Description

Technical Field

[0001] This utility model belongs to the field of aero-engine technology, and specifically relates to a blade oscillation angle detection mechanism. Background Technology

[0002] The oscillation angle of stator blades in aero-engines has a significant impact on engine performance, stability, and efficiency. For example, optimizing the airflow angle of attack improves compressor efficiency; suppressing surge improves low-speed performance; regulating pressure ratio and flow rate; and influencing engine thrust and fuel consumption. Specifically: the angle of attack is the angle between the airflow and the blade surface, affecting the efficiency of airflow through the compressor. By adjusting the stator blade oscillation angle, the airflow can pass through each compressor stage at the optimal angle, thereby improving compressor compression efficiency. A more efficient compression process directly increases engine thrust and reduces fuel consumption. Surge is a common phenomenon in aero-engines, especially at low speeds, and can lead to decreased engine performance, increased vibration, and even engine damage. The stator blade oscillation angle can effectively regulate airflow speed and pressure, reducing surge. Precise angle control allows the engine to maintain stable airflow under different flight conditions, improving engine performance at low speeds and during climbs. The compressor's pressure ratio and flow rate directly affect engine thrust and efficiency. By adjusting the stator blade oscillation angle, airflow distribution and channel drag can be optimized, thereby precisely controlling pressure ratio and flow rate to ensure the engine maintains optimal operating conditions under different operating conditions. The stator blade oscillation angle plays a regulatory role in controlling flow rate and pressure ratio, thus improving the overall engine efficiency and thrust. The stator blade oscillation angle directly affects the airflow speed and direction, which in turn affects the engine's thrust output. By precisely controlling the blade angle, the energy conversion of the airflow can be optimized, allowing the engine to achieve optimal thrust output in all flight phases. At the same time, by reducing unnecessary drag and losses, fuel consumption can be effectively reduced, fuel economy can be improved, and environmental pollution can be reduced. Stability is a key indicator in aero-engine design, and precise control of the stator blade oscillation angle helps ensure the engine's smooth operation under various load conditions. Through precise detection and adjustment, problems such as vibration and resonance caused by inappropriate blade angles can be avoided, thereby improving engine reliability and service life.

[0003] The current measurement method involves operators manually inspecting the blades for proper assembly using a ruler. This method suffers from large measurement errors, inconsistent readings, requires manual recording, makes data traceability difficult, and is inefficient. Utility Model Content

[0004] In view of this, the present invention provides a blade swing angle detection mechanism, which can solve the problems of large error, unstable measurement values, need for manual recording of values, difficulty in data traceability, and low efficiency of the current measurement method.

[0005] This utility model is implemented as follows:

[0006] This utility model provides a blade swing angle detection mechanism, which includes a fixed base plate, a slide rail on the top of the fixed base plate, a sliding base plate slidably connected in the sliding base plate, a detection component on the top of the sliding base plate, a gripper at one end of the detection component, and an angle sensor at the other end; the detection component is composed of a servo motor, a rotating platform, a first shaft, a first coupling, a second coupling, a bearing, a first rotating shaft, a second shaft, and a second rotating shaft connected together.

[0007] Based on the above technical solution, the blade swing angle detection mechanism of this utility model can be further improved as follows:

[0008] An electric cylinder is fixed to one end of the fixed base plate. The output shaft of the electric cylinder is connected to the sliding base plate and is used to drive the sliding base plate to slide along the slide rail, so that the gripper reaches the designated position.

[0009] Furthermore, a second shaft is connected to the gripper for clamping the blade.

[0010] Furthermore, the bearing and the servo motor are used to drive the first rotating shaft and the second rotating shaft to rotate, thereby driving the gripper to rotate.

[0011] Furthermore, a second O-ring and a fourth O-ring are provided between the first rotating shaft and the second rotating shaft to eliminate the problem of misalignment between the detection mechanism and the blade.

[0012] Furthermore, the angle sensor is used to accurately detect the rotation angle of the blade, thereby improving the product inspection accuracy.

[0013] Furthermore, a first O-ring and a third O-ring are respectively provided at both ends of the second rotating shaft to serve as a buffer and prevent rigid contact between the product and the mechanism, which could damage the customer's product.

[0014] Furthermore, the tension / compression sensor is installed inside the electric cylinder cavity to monitor the resistance generated inside the cavity when the electric cylinder moves, preventing excessive resistance from damaging the customer's product.

[0015] Furthermore, the bearing is connected to the sliding base plate via a mounting bracket.

[0016] Furthermore, a torque sensor is provided in the middle of the detection component.

[0017] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: The fixed base plate is the basic support structure of the testing mechanism, and its main function is to provide stable support for other components. A slide rail is provided on its top, allowing the sliding base plate to slide along the rail, ensuring the smooth operation of the entire device.

[0018] The sliding base plate is slidably connected within the slide rail, allowing the detection component to move precisely. This design enables the sliding base plate to easily translate along the slide rail, thereby controlling the horizontal position of the detection component and ensuring that the grippers reach the designated blade position for accurate angle detection.

[0019] The servo motor drives the rotating platform and shaft for precise control, allowing for accurate adjustment of the gripper's angle and position.

[0020] The rotating platform is driven by a servo motor to rotate the detection component, enabling the gripper to accurately grasp the blade and perform a swinging motion.

[0021] The first shaft, the second shaft, and the coupling are connected by bearings and shafts, which allows for precise transmission of rotational motion and ensures that all rotating parts work together.

[0022] An angle sensor mounted on the detection assembly is responsible for measuring the blade's swing angle in real time, ensuring the accuracy of the detection results.

[0023] The grippers are used to hold the blades to ensure that they do not move during the inspection process. The grippers can be adjusted as needed to ensure a firm contact between them and the blades, thus avoiding any impact on inspection accuracy.

[0024] An electric cylinder is mounted at one end of the fixed base plate and is used to drive the sliding base plate to slide along the slide rail. The electric cylinder enables the gripper to reach the predetermined position, ensuring that the blade remains in the correct position during the inspection process and avoiding improper contact between the gripper and the blade, which would affect the angle measurement.

[0025] The bearing is connected to the sliding base plate via a mounting bracket, providing smooth rotational support. The servo motor works in conjunction with the bearing and shaft to ensure smooth rotation and eliminate errors caused by friction or misalignment.

[0026] O-rings are used to provide a seal between multiple rotating shafts, eliminating misalignment and ensuring smooth operation of all components during testing. The configuration of a second and fourth O-ring further reduces testing errors caused by mechanical misalignment.

[0027] The first and third O-rings provide a buffering effect, reducing rigid contact between the shaft and the mechanism, avoiding damage to the blades, and improving the safety of the equipment.

[0028] A torque sensor is installed in the middle of the detection assembly to monitor the torque generated during the detection process in real time. By accurately measuring the torque, the accuracy of the detection can be further ensured, especially when detecting the oscillation of blades, it can identify the stress on the blades and avoid damage to the product due to excessive torque.

[0029] The tension / compression sensor is installed inside the electric cylinder cavity to monitor the resistance generated within the cavity during cylinder movement. By monitoring the resistance, the operating status of the equipment can be adjusted in real time to prevent the electric cylinder from malfunctioning or damaging the equipment and blades due to excessive resistance.

[0030] Compared with the prior art, the beneficial effects of the blade swing angle detection mechanism provided by this utility model are:

[0031] 1. Automatically measures the blade swing angle, resulting in high efficiency;

[0032] This device can automatically measure the oscillation angle of blades without manual intervention, thus improving work efficiency. A sliding base plate is precisely adjusted using an electric cylinder to ensure the grippers accurately reach the designated position on the blade, enabling efficient angle measurement and reducing the time and human error associated with traditional manual measurements.

[0033] 2. Accurate measurement;

[0034] An angle sensor monitors the blade's swing angle in real time, ensuring measurement accuracy. The collaboration of precision components such as servo motors, rotating platforms, and shafts ensures the stability and consistency of the angle during measurement, thereby improving product inspection precision.

[0035] 3. It can automatically align itself and detect torque and tension / compression in real time, effectively protecting the product;

[0036] The automatic self-aligning function enables the mechanism to adapt to changes in the shape and position of different blades, ensuring accurate contact between the grippers and the blades and avoiding measurement errors caused by eccentricity or misalignment.

[0037] Torque sensors monitor torque changes in real time, while tension and compression sensors monitor the resistance generated during the movement of the electric cylinder. This allows for timely adjustments to system operation, preventing damage to equipment and products due to overload or abnormal conditions, and improving the safety and reliability of the testing process.

[0038] 4. Compatible with angle detection of various blades, with a wide range of applications;

[0039] This inspection mechanism, with its adjustable grippers and multi-axis control system, can adapt to blades of different sizes and shapes, exhibiting high compatibility and wide applicability for the inspection of various types of blades, thus expanding its application scenarios.

[0040] 5. Simple structure and easy maintenance.

[0041] The mechanism features a simple design and well-integrated components, facilitating operation and maintenance. Key components such as servo motors, angle sensors, and bearings are easy to replace and repair, reducing equipment failure rates and maintenance complexity, and improving system availability and user convenience. Attached Figure Description

[0042] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 This is a side sectional view of a blade swing angle detection mechanism;

[0044] Figure 2 This is a top sectional view of a blade swing angle detection mechanism;

[0045] Figure 3 A schematic diagram of a blade swing angle detection mechanism;

[0046] The attached diagram lists the components represented by each number as follows:

[0047] 1. Fixed base plate; 10. Second coupling; 11. First O-ring; 12. Second O-ring; 13. Mounting base; 14. Bearing; 15. Third O-ring; 16. Fourth O-ring; 17. First rotating shaft; 18. Electric cylinder; 19. Tension / compression sensor; 2. Slide rail; 20. Clamping cylinder; 21. Gripper; 22. Second shaft; 23. Second rotating shaft; 3. Sliding base plate; 4. Angle sensor; 5. Servo motor; 6. Rotating platform; 7. First shaft; 8. First coupling; 9. Torque sensor. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0049] like Figure 1-3The image shows a first embodiment of a blade swing angle detection mechanism provided by this utility model. In this embodiment, it includes a fixed base plate 1, a slide rail 2 on the top of the fixed base plate 1, a sliding base plate 3 slidably connected in the sliding base plate 3, and a detection component on the top of the sliding base plate 3. One end of the detection component is provided with a gripper 21, and the other end is provided with an angle sensor 4. The detection component is composed of a servo motor 5, a rotating platform 6, a first shaft 7, a first coupling 8, a second coupling 10, a bearing 14, a first rotating shaft 17, a second shaft 22, and a second rotating shaft 23 connected together.

[0050] In the above technical solution, an electric cylinder 18 is fixed at one end of the fixed base plate 1. The output shaft of the electric cylinder 18 is connected to the sliding base plate 3 and is used to drive the sliding base plate 3 to slide along the slide rail 2, so that the gripper 21 reaches the designated position.

[0051] Furthermore, in the above technical solution, a second shaft 22 is connected to the gripper 21 for clamping the blade.

[0052] Furthermore, in the above technical solution, the bearing 14 and the servo motor 5 are used to drive the first rotating shaft 17 and the second rotating shaft 23 to rotate, thereby driving the gripper 21 to rotate.

[0053] Furthermore, in the above technical solution, a second O-ring 12 and a fourth O-ring 16 are provided between the first rotating shaft 17 and the second rotating shaft 23 to eliminate the problem of misalignment between the detection mechanism and the blade.

[0054] Furthermore, in the above technical solution, the angle sensor 4 is used to accurately detect the rotation angle of the blade, thereby improving the product detection accuracy.

[0055] Furthermore, in the above technical solution, the two ends of the second rotating shaft 23 are respectively provided with a first O-ring 11 and a third O-ring 15, which serve as a buffer to prevent rigid contact between the product and the mechanism and damage to the customer's product.

[0056] Furthermore, in the above technical solution, the tension / compression sensor 19 is installed inside the cavity of the electric cylinder 18 to monitor the resistance generated inside the cavity when the electric cylinder 18 moves, so as to prevent excessive resistance from damaging the customer's product.

[0057] Furthermore, in the above technical solution, the bearing 14 is connected to the sliding base plate 3 via the mounting seat 13.

[0058] Furthermore, in the above technical solution, a torque sensor 9 is provided in the middle of the detection component.

[0059] Specifically, the principle of this utility model is: when in use,

[0060] 1. The blade follows the product body to reach the specified position (directly in front of the mechanism gripper);

[0061] 2. The electric cylinder 18 extends, and the sliding base plate 3 connected to the fixed base plate 1 through the slide rail 2 extends, and the gripper 21 reaches the position of the blade;

[0062] 3. The clamping cylinder 20 retracts to clamp the blade;

[0063] 4. The servo motor 5 rotates, and through the intermediate rotating platform 6, shaft, coupling, etc., the blade inside the gripper 21 is rotated to the required angle in the cavity;

[0064] 5. Monitor the value of the torque sensor 9 during the rotation process. If it is within the specified torque value, it indicates that the assembly is qualified;

[0065] 6. If the torque value exceeds the specified value during the rotation of the blade. Then the electric cylinder 18 moves forward or backward in a micro-distance successively. If the torque value of the rotated blade is within the specified range after the movement, it represents a qualified one.

Claims

1. A blade swing angle detection mechanism, characterized in that, The system includes a fixed base plate (1), a slide rail (2) on the top of the fixed base plate (1), a sliding base plate (3) slidably connected in the slide rail (2), a detection component on the top of the sliding base plate (3), a gripper (21) on one end of the detection component, and an angle sensor (4) on the other end; the detection component is composed of a servo motor (5), a rotating platform (6), a first shaft (7), a first coupling (8), a second coupling (10), a bearing (14), a first rotating shaft (17), a second shaft (22), and a second rotating shaft (23).

2. The blade oscillation angle detection mechanism according to claim 1, characterized in that, An electric cylinder (18) is fixed to one end of the fixed base plate (1). The output shaft of the electric cylinder (18) is connected to the sliding base plate (3) to drive the sliding base plate (3) to slide along the slide rail (2), thereby allowing the gripper (21) to reach the designated position.

3. The blade oscillation angle detection mechanism according to claim 2, characterized in that, The gripper (21) is connected to a second shaft (22) for clamping the blade.

4. The blade oscillation angle detection mechanism according to claim 3, characterized in that, The bearing (14) and the servo motor (5) are used to drive the first rotating shaft (17) and the second rotating shaft (23) to rotate, thereby driving the gripper (21) to rotate.

5. The blade oscillation angle detection mechanism according to claim 4, characterized in that, A second O-ring (12) and a fourth O-ring (16) are provided between the first rotating shaft (17) and the second rotating shaft (23) to eliminate the problem of misalignment between the detection mechanism and the blade.

6. The blade oscillation angle detection mechanism according to claim 5, characterized in that, The angle sensor (4) is used to accurately detect the rotation angle of the blade, thereby improving the product detection accuracy.

7. The blade oscillation angle detection mechanism according to claim 6, characterized in that, The second rotating shaft (23) is provided with a first O-ring (11) and a third O-ring (15) at both ends, which serve as a buffer to prevent rigid contact between the product and the mechanism and damage to the customer's product.

8. The blade oscillation angle detection mechanism according to claim 7, characterized in that, A tension / compression sensor (19) is installed inside the cavity of the electric cylinder (18) to monitor the resistance generated inside the cavity when the electric cylinder (18) moves, so as to prevent excessive resistance from damaging the customer's product.

9. The blade oscillation angle detection mechanism according to claim 8, characterized in that, The bearing (14) is connected to the sliding base plate (3) via a mounting base (13).

10. A blade oscillation angle detection mechanism according to claim 9, characterized in that, A torque sensor (9) is provided in the middle of the detection component.

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