A tandem helicopter dynamic balance test sensor tool

Abstract

The utility model relates to dynamic balance test technical field discloses a kind of vertical column type helicopter dynamic balance test sensor tool, including base, longitudinal adjusting mechanism is arranged on the base, the longitudinal adjusting mechanism includes longitudinal control motor installed in the side of base, longitudinal control motor output end is connected with longitudinal screw rod, longitudinal screw rod is provided with vibration sensor mounting platform. Through the combination of longitudinal adjusting mechanism, transverse adjusting mechanism and vertical adjusting mechanism, the installation position and angle of vibration sensor and photoelectric tachometer can be adjusted flexibly, meeting the accurate alignment needs of different models and special structures. Due to the accurate adjustment of sensor position and angle, the vibration of helicopter rotor system can be measured more accurately, thereby improving the accuracy of dynamic balance test. The design of sensor tool makes the installation and adjustment process more convenient and fast, reducing the time and labor intensity required for installation.

Description

Technical Field

[0001] This utility model relates to the field of dynamic balancing testing technology, specifically a tandem helicopter dynamic balancing test sensor fixture. Background Technology

[0002] In helicopter reliability testing, dynamic balancing is a crucial step. Its main purpose is to reduce vibration problems caused by uneven mass distribution between the rotor hub and blades and differences in trajectory altitude in the rotor system, thereby reducing structural fatigue and extending the service life of the helicopter.

[0003] In traditional dynamic balancing tests, vibration sensors and photoelectric tachometers are typically mounted on the helicopter fuselage, ensuring the photoelectric tachometer is aligned with reflective tape affixed to the rotor blades. However, due to the varying rotor system structures of different aircraft models, the sensor mounting methods must also vary, introducing numerous inconveniences to the testing. Existing sensor mounting methods primarily rely on securing them with tape or tightening them with screws and nuts to the fuselage structure, which have significant limitations. For example, they cannot flexibly adjust the angle and position of the photoelectric tachometer, making it difficult to meet precise alignment requirements when dealing with special structures or extreme conditions (such as large rotor blades). Furthermore, using tape to secure sensors carries the risk of loosening, which not only increases test errors but may also lead to safety accidents.

[0004] Therefore, based on the above-mentioned technical problems, it is necessary for those skilled in the art to develop a tandem helicopter dynamic balance test sensor fixture. Utility Model Content

[0005] The purpose of this invention is to provide a tandem helicopter dynamic balance test sensor fixture to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A tandem helicopter dynamic balance test sensor fixture solution includes a base, on which a longitudinal adjustment mechanism is provided. The longitudinal adjustment mechanism includes a longitudinal control motor mounted on the side of the base, and a longitudinal lead screw connected to the output end of the longitudinal control motor. A vibration sensor mounting platform is provided on the longitudinal lead screw, and a threaded seat is provided at the bottom of the vibration sensor mounting platform. The threaded seat is threadedly connected to the longitudinal lead screw. A vibration sensor mounting area is provided on the vibration sensor mounting platform. Side plates are provided on both sides of the vibration sensor mounting platform, and a lateral adjustment mechanism is provided between the side plates. The lateral adjustment mechanism includes a lateral control motor mounted on the side plate, and a lateral lead screw connected to the output end of the lateral control motor. A lateral adjustment seat is fitted on the lateral lead screw and threadedly connected to it. A vertical control motor is mounted on the top of the lateral adjustment seat, and a vertical lead screw is connected to the output end of the vertical control motor. A vertical adjustment seat is threadedly connected to the vertical lead screw, and a photoelectric tachometer mounting block is mounted on the vertical adjustment seat. The photoelectric tachometer mounting block is used to mount the photoelectric tachometer.

[0008] As a preferred technical solution, limit shafts are provided on both sides of the longitudinal lead screw, the transverse lead screw, and the vertical lead screw, and the vibration sensor mounting platform, the transverse adjustment seat, and the vertical adjustment seat are all slidably connected to the limit shafts.

[0009] As a preferred technical solution, the side plate is provided with a side plate groove, and a bolt is provided in the side plate groove, which is connected to the vibration sensor mounting platform.

[0010] As a preferred technical solution, the ends of the longitudinal lead screw, the transverse lead screw, and the vertical lead screw are all connected by bearing seats.

[0011] As a preferred technical solution, the longitudinal control motor, the lateral control motor, and the vertical control motor are all high-precision stepper motors.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention relates to a tandem helicopter dynamic balancing test sensor fixture. Through a combination of longitudinal, lateral, and vertical adjustment mechanisms, the installation position and angle of the vibration sensor and photoelectric tachometer can be flexibly adjusted to meet the precise alignment requirements of different aircraft models and special structures. Due to the precise adjustment of the sensor position and angle, the vibration of the helicopter rotor system can be measured more accurately, thereby improving the accuracy of dynamic balancing tests. The design of the sensor fixture makes the installation and adjustment process simpler and faster, reducing the time and labor intensity required for installation. The base design can adapt to the main beams of various tandem unmanned helicopters, making this fixture widely applicable.

[0014] The use of longitudinal, lateral, and vertical control motors ensures precise control of the adjustment process, further improving the accuracy and reliability of the test.

[0015] In summary, the tandem helicopter dynamic balance test sensor fixture of this invention has significant advantages in improving test accuracy, ease of operation, adaptability, and safety. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of a tandem helicopter dynamic balance test sensor fixture;

[0017] Figure 2 A three-dimensional structural schematic diagram of a tandem helicopter dynamic balance test sensor fixture;

[0018] Figure 3 This is a side view of a tandem helicopter dynamic balance test sensor fixture.

[0019] In the attached diagram, the following are the reference numerals: 1. Base; 21. Longitudinal control motor; 22. Longitudinal lead screw; 23. Limiting shaft; 24. Vibration sensor mounting platform; 241. Vibration sensor mounting area; 25. Side plate; 251. Side plate groove; 26. Lateral control motor; 27. Lateral lead screw; 28. Lateral adjustment seat; 29. ​​Vertical control motor; 30. Vertical lead screw; 31. Vertical adjustment seat; 32. Photoelectric tachometer mounting block. Detailed Implementation

[0020] The features and exemplary embodiments of various aspects of this utility model will now be described in detail. To make the objectives, technical solutions, and advantages of this utility model clearer, the following description, in conjunction with the accompanying drawings and specific embodiments, will provide a further detailed description. For those skilled in the art, this utility model can be implemented without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of this utility model by illustrating examples.

[0021] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model provides a technical solution for a tandem helicopter dynamic balance test sensor fixture: it includes a base 1, which is the foundation of the entire fixture and is typically made of high-strength materials to ensure the stability and durability of the fixture during testing. The size and shape of the base 1 should be customized according to the size and shape of the helicopter beam to ensure that the fixture can be securely installed on the helicopter fuselage.

[0022] The longitudinal adjustment mechanism includes a longitudinal control motor 21, a longitudinal lead screw 22, and a limit shaft 23. The longitudinal control motor 21 is mounted on the side of the base 1, and its output end is connected to the longitudinal lead screw 22. A vibration sensor mounting platform 24 is mounted on the longitudinal lead screw 22, and a threaded seat is provided at the bottom of the vibration sensor mounting platform 24, which is threadedly connected to the longitudinal lead screw 22. By driving the longitudinal control motor 21, the longitudinal movement of the vibration sensor mounting platform 24 can be realized, thereby adjusting the position of the vibration sensor.

[0023] The lateral adjustment mechanism includes a lateral control motor 26, a lateral lead screw 27, and a lateral adjustment seat 28. The lateral control motor 26 is mounted on the side plate 25, and its output end is connected to the lateral lead screw 27. The lateral adjustment seat 28 is fitted onto the lateral lead screw 27 and is threadedly connected to it. Driven by the lateral control motor 26, the lateral adjustment seat 28 can be moved laterally, thereby adjusting the lateral position of the vibration sensor mounting platform 24.

[0024] The vertical adjustment mechanism includes a vertical control motor 29, a vertical lead screw 30, and a vertical adjustment seat 31. The vertical control motor 29 is mounted on top of the horizontal adjustment seat 28, and its output end is connected to the vertical lead screw 30. The vertical lead screw 30 is externally threaded onto the vertical adjustment seat 31, and a photoelectric tachometer mounting block 32 is mounted on the vertical adjustment seat 31 for mounting the photoelectric tachometer. Driven by the vertical control motor 29, the vertical adjustment seat 31 can be moved vertically, thereby adjusting the position of the photoelectric tachometer.

[0025] The vibration sensor is installed in the vibration sensor mounting area 241, and the photoelectric tachometer is installed on the photoelectric tachometer mounting block 32. Through the combined use of the above-mentioned longitudinal, lateral, and vertical adjustment mechanisms, the installation position and angle of the vibration sensor and the photoelectric tachometer can be flexibly adjusted to meet the precise alignment requirements of different models and special structures.

[0026] Limiting shafts 23 are provided on both sides of the longitudinal lead screw 22, the transverse lead screw 27, and the vertical lead screw 30 to ensure that the movement range of the lead screw is within a safe and precise range. The side plate 25 is provided with a side plate groove 251, and bolts are installed in the side plate groove 251 and connected to the vibration sensor mounting platform 24 by bolts to provide additional stability and adjustment accuracy.

[0027] The longitudinal control motor 21, the lateral control motor 26, and the vertical control motor 29 all employ high-precision stepper motors to ensure precise control of the adjustment process. These motors are controlled by appropriate drive circuits to achieve accurate movement and positioning.

[0028] Through the above embodiments, the tandem helicopter dynamic balance test sensor fixture of this utility model can flexibly adjust the position and angle of the sensor to meet the precise alignment requirements of different aircraft models and special structures, improve the accuracy of dynamic balance testing, simplify the installation and adjustment process, reduce the time and labor intensity required for installation, and ensure the accuracy and reliability of the test.

[0029] The working principle and usage process of this utility model: After assembling the various components of this solution in sequence, work according to the above implementation methods according to actual needs to complete all working steps.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0031] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] The embodiments described above are not exhaustive, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the above description. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the invention, enabling those skilled in the art to effectively utilize the invention and its modifications. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the protection scope of the invention.

Claims

1. A tandem helicopter dynamic balance test sensor fixture, characterized in that, The system includes a base (1), on which a longitudinal adjustment mechanism is provided. The longitudinal adjustment mechanism includes a longitudinal control motor (21) installed on the side of the base (1). The output end of the longitudinal control motor (21) is connected to a longitudinal lead screw (22). A vibration sensor mounting platform (24) is provided on the longitudinal lead screw (22). A threaded seat is provided at the bottom of the vibration sensor mounting platform (24). The threaded seat is threadedly connected to the longitudinal lead screw (22). A vibration sensor mounting area (241) is provided on the vibration sensor mounting platform (24). Side plates (25) are provided on both sides of the vibration sensor mounting platform (24). A lateral adjustment mechanism is provided between the side plates (25). The transverse adjustment mechanism includes a transverse control motor (26) mounted on a side plate (25), the output end of which is connected to a transverse lead screw (27), a transverse adjustment seat (28) fitted on the transverse lead screw (27), the transverse adjustment seat (28) being threadedly connected to it, and a vertical control motor (29) mounted on the top of the transverse adjustment seat (28), the output end of which is connected to a vertical lead screw (30), the vertical lead screw (30) being threadedly connected to a vertical adjustment seat (31), and a photoelectric tachometer mounting block (32) mounted on the vertical adjustment seat (31), the photoelectric tachometer mounting block (32) being used to mount a photoelectric tachometer.

2. The tandem helicopter dynamic balance test sensor fixture according to claim 1, characterized in that: Limiting shafts (23) are provided on both sides of the longitudinal lead screw (22), the transverse lead screw (27), and the vertical lead screw (30). The vibration sensor mounting platform (24), the transverse adjustment seat (28), and the vertical adjustment seat (31) are all slidably connected to the limiting shafts (23).

3. The tandem helicopter dynamic balance test sensor fixture according to claim 1, characterized in that: The side plate (25) is provided with a side plate groove (251), and a bolt is provided in the side plate groove (251) and connected to the vibration sensor mounting platform (24) through the bolt.

4. The tandem helicopter dynamic balance test sensor fixture according to claim 1, characterized in that: The ends of the longitudinal lead screw (22), the transverse lead screw (27), and the vertical lead screw (30) are all connected by bearing seats.

5. The tandem helicopter dynamic balance test sensor fixture according to claim 1, characterized in that: The longitudinal control motor (21), the lateral control motor (26), and the vertical control motor (29) are all high-precision stepper motors.

Images