Helicopter parallel steering engine torque switch experiment equipment
By designing a portable experimental device for parallel helicopter servo motor torque switch, using a stepper motor and torque sensor, the problems of large size and complex operation of existing equipment are solved. This device achieves high-precision torque measurement and simplified operation, making it suitable for testing servo motors in different locations and of different models.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINESE PEOPLES LIBERATION ARMY UNIT 69008
- Filing Date
- 2025-06-06
- Publication Date
- 2026-05-15
AI Technical Summary
Existing helicopter servo torque testing equipment is large, complex in structure, expensive, complicated to operate, and inconvenient to carry. Traditional weight weighing measurement methods require multiple people to cooperate, which is time-consuming and labor-intensive.
An experimental device for a helicopter parallel servo torque switch with a structure consistent with that of a luggage compartment was designed. It uses a stepper motor, a turboshaft reducer and a torque sensor, combined with a simplified control switch and display, to achieve high-precision torque measurement. It supports DC or AC power and is suitable for various application environments.
The equipment achieves portability and ease of operation, supports use in multiple locations, reduces operational requirements, improves the accuracy and adaptability of torque measurement, and meets the needs of helicopter maintenance and troubleshooting.
Smart Images

Figure CN224241278U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of helicopter parallel servo motor testing technology, specifically a helicopter parallel servo motor torque switch experimental device. Background Technology
[0002] As a key component of the helicopter flight control system, the accuracy and stability of the helicopter's torque output directly affect the helicopter's flight performance and safety. Therefore, accurate measurement of the servo motor torque is crucial during helicopter maintenance and troubleshooting.
[0003] Currently, common servo torque testing methods and equipment on the market have many drawbacks: First, the testing equipment is bulky, complex in structure, expensive, and inconvenient to carry, requiring a dedicated equipment workshop and limiting its usability. Second, the testing equipment uses the traditional weight weighing method, which is complex to operate, requires multiple people to cooperate, is time-consuming and labor-intensive, and has high operational requirements. There is a need for a high-precision torque sensor, digital display, and program-controlled testing technology, possessing the characteristics of small size, light weight, simple operation, low cost, and portability for helicopter parallel servo torque switch testing. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide an experimental device for a helicopter parallel servo torque switch, which addresses the above-mentioned shortcomings.
[0005] To solve the above technical problems, the present invention adopts the following technical solution:
[0006] An experimental device for a parallel servo motor torque switch for helicopters includes a housing, a stepper motor, a turboshaft reducer, a mounting rail, and a mounting panel. The housing structure is consistent with that of a luggage compartment. The housing includes a first housing and a second housing. A mounting panel is disposed inside the first housing, and a stepper motor is disposed on the mounting panel. A turboshaft reducer is disposed on the output shaft of the stepper motor. A torque sensor is disposed at the output end of the turboshaft reducer. A first flexible coupling is disposed at the output end of the torque sensor. The output end of the first flexible coupling is connected to the output shaft of the parallel servo motor. The stepper motor is used to transmit forward and reverse torques to the parallel servo motor through the turboshaft reducer. The turboshaft reducer is used to amplify the torque output by the stepper motor. The torque sensor is used to detect the torque output by the output shaft of the parallel servo motor. A mounting rail is disposed at the bottom of the parallel servo motor for adjusting the installation position of the parallel servo motor. A stepper motor control switch for controlling the stepper motor is disposed inside the second housing.
[0007] Furthermore, a second flexible coupling is provided between the stepper motor and the worm gear reducer.
[0008] Furthermore, a power module is provided inside the first housing, located below the mounting panel. The power module is electrically connected to the stepper motor, torque sensor, and stepper motor control switch via wires. The stepper motor control switch is electrically connected to the stepper motor and torque sensor via wires. The mounting panel has wire through holes, and the wires on the power module are electrically connected to the stepper motor, torque sensor, and stepper motor control switch via the wire through holes.
[0009] Furthermore, the power module can be selectively connected to a DC or AC power source. A current selection switch for selecting AC or DC current is electrically connected to the power transmission terminal of the power module. The power module is electrically connected to the stepper motor and the stepper motor control switch to form a stepper motor control circuit. A stepper motor start / stop switch for controlling the start, stop and direction of the stepper motor is also electrically connected to the stepper motor control circuit.
[0010] Furthermore, the mounting panel is also equipped with a first display and a second display. The first display is used to display the torque detected by the torque sensor, and the second display is used to display the voltage and current of the parallel servo motor. The first display is electrically connected to the torque sensor and the power module to form a torque detection circuit. The parallel servo motor is also connected to a load circuit in parallel. The load circuit is equipped with an unload selection switch that allows selection of no load connection, simulated no-load environment, or connected load to simulate load working environment, as well as a voltage sensor and a current sensor. The second display is connected to the power module, voltage sensor, and current sensor to form a voltage and current detection circuit.
[0011] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages:
[0012] This utility model features a box structure identical to that of a suitcase, offering portability and solving the problem of existing testing equipment being bulky and inconvenient to carry. It is suitable for various operating environments and requires no dedicated equipment room. Multiple control switches on the mounting panel allow users to easily control the start / stop and forward / reverse rotation of the stepper motor, select test circuits for different models of parallel servo motors, and set the no-load or load current of the parallel servo motors. This greatly simplifies the operation process, reduces operational requirements, and avoids the problems of multiple personnel and time-consuming labor involved in traditional weight-based weighing methods. A torque sensor is incorporated into the device to detect the torque output from the parallel servo motor's output shaft, achieving high-precision torque measurement and meeting the needs for accurate servo motor torque measurement during helicopter maintenance and troubleshooting. The mounting rail design allows for adjustment of the parallel servo motor's installation position, improving the device's adaptability and flexibility, and accommodating the testing needs of parallel servo motors of different models and sizes. The power module can be connected to either DC or AC power, enhancing the device's power adaptability and facilitating use in various environments.
[0013] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the present invention in use.
[0015] Figure 2 This is a top view schematic diagram of the utility model in use;
[0016] Figure 3 This is a right sectional view of the present invention.
[0017] The attached diagram lists the components represented by each number as follows:
[0018] 1. Housing; 101. First Housing; 102. Second Housing; 2. Stepper Motor; 3. Turbo Shaft Reducer; 4. Mounting Rail; 5. Mounting Panel; 6. Torque Sensor; 7. First Flexible Coupling; 8. Stepper Motor Control Switch; 9. Second Flexible Coupling; 10. First Display; 11. Power Module; 12. Wire Through Hole; 13. Second Display. Detailed Implementation
[0019] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.
[0020] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying 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.
[0021] like Figure 1-3As shown, an experimental device for a helicopter parallel servo torque switch includes a housing 1, a stepper motor 2, a turboshaft reducer 3, a mounting rail 4, and a mounting panel 5. The structure of the housing 1 is consistent with that of a luggage compartment. The housing 1 includes a first housing 101 and a second housing 102. The mounting panel 5 is provided inside the first housing 101. The stepper motor 2 is mounted on the mounting panel 5. The turboshaft reducer 3 is mounted on the output shaft of the stepper motor 2. A torque sensor 6 is provided at the output end of the turboshaft reducer 3. The output of the torque sensor 6... The first flexible coupling 7 is provided at the end, and the output end of the first flexible coupling 7 is connected to the output shaft of the parallel servo motor. The stepper motor 2 is used to transmit forward torque and reverse torque to the parallel servo motor through the worm gear reducer 3. The worm gear reducer 3 is used to amplify the torque output by the stepper motor 2. The torque sensor 6 is used to detect the torque output by the output shaft of the parallel servo motor. The bottom of the parallel servo motor is provided with a mounting slide rail 4 for adjusting the installation position of the parallel servo motor. The inner side of the second housing 102 is provided with a stepper motor control switch 8 for controlling the stepper motor 2.
[0022] In one embodiment, a second flexible coupling 9 is provided between the stepper motor 2 and the worm gear reducer 3.
[0023] In one embodiment, a power module 11 is provided inside the first housing 101, located below the mounting panel 5. The power module 11 is electrically connected to the stepper motor 2, the torque sensor 6, and the stepper motor control switch 8 via wires. The stepper motor control switch 8 is electrically connected to the stepper motor 2 and the torque sensor 6 via wires. The mounting panel 5 has wire through holes 12, and the wires on the power module 11 are electrically connected to the stepper motor 2, the torque sensor 6, and the stepper motor control switch 8 through the wire through holes 12.
[0024] In one implementation, the power module 11 can be selectively connected to a DC or AC power source. A current selection switch for selecting AC or DC current is electrically connected to the power transmission terminal of the power module 11. The power module 11 is electrically connected to the stepper motor 2 and the stepper motor control switch 8 to form a stepper motor control circuit. A stepper motor start / stop switch for controlling the start, stop and direction of the stepper motor 2 is also electrically connected to the stepper motor control circuit.
[0025] In one embodiment, the mounting panel 5 is further provided with a first display 10 and a second display 13. The first display 10 is used to display the torque detected by the torque sensor, and the second display 13 is used to display the voltage and current of the parallel servo motor. The first display 10 is electrically connected to the torque sensor 6 and the power module 11 to form a torque detection circuit. The parallel servo motor is also connected to a load circuit in parallel. The load circuit is provided with an unload selection switch that allows selection of no load connection, simulated no-load environment, or connected load to simulate load working environment, as well as a voltage sensor and a current sensor. The second display 13 is connected to the power module 11, the voltage sensor, and the current sensor to form a voltage and current detection circuit.
[0026] In this utility model, the outer side of the first housing 101 is provided with DC power supply and AC power supply connection ports, and the outer side of the first housing 101 is also provided with heat dissipation vents. The stepper motor control switch 8 is a Mitsubishi FX3U-7DM.
[0027] The workflow of this utility model is as follows: Open the experimental equipment housing 1, install the parallel servo motor to a suitable position on the mounting panel 5 via the mounting rail 4, and ensure a secure connection. Check the power module 11, and select to connect a DC or AC power supply according to the actual situation to power the equipment. Manually operate the stepper motor control switch 8 to set parameters such as the rotation direction, rotation speed, and rotation time of the stepper motor 2. Manually operate the stepper motor control switch 8 to set the speed and time of the parallel servo motor, and control the start, stop, and direction of the stepper motor 2 via the stepper motor start / stop switch. Start the stepper motor 2, and transmit forward or reverse torque to the parallel servo motor through the worm gear reducer 3. The worm gear reducer 3 amplifies the torque output by the stepper motor 2 and transmits it to the parallel servo motor. The torque sensor 6 detects the torque output by the output shaft of the parallel servo motor in real time and transmits the data to the first display 10 for display. Observe the torque data on the first display 10 and the current and voltage data on the second display 13, and record the test results. Based on the test results, analyze the torque output performance of the parallel servo motor to determine whether it meets the design requirements or has a fault. After the test, turn off stepper motor 2 and disconnect the power supply. Remove the parallel servo motor from the mounting rail 4, tidy up the equipment, and close the housing 1.
[0028] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.
Claims
1. An experimental device for a helicopter parallel servo motor torque switch, characterized in that, The system includes a housing (1), a stepper motor (2), a vortex reducer (3), a mounting rail (4), and a mounting panel (5). The structure of the housing (1) is consistent with that of a suitcase. The housing (1) includes a first housing (101) and a second housing (102). The first housing (101) has a mounting panel (5) on its inner side. The mounting panel (5) has a stepper motor (2) on its mounting panel (5). The output shaft of the stepper motor (2) has a vortex reducer (3). The output end of the vortex reducer (3) has a torque sensor (6). The output end of the torque sensor (6) has a first flexible coupling (7). The output end of a flexible coupling (7) is connected to the output shaft of a parallel servo motor. The stepper motor (2) is used to transmit forward and reverse torques to the parallel servo motor through a vortex reducer (3). The vortex reducer (3) is used to amplify the torque output by the stepper motor (2). The torque sensor (6) is used to detect the torque output by the output shaft of the parallel servo motor. The bottom of the parallel servo motor is provided with a mounting slide rail (4) for adjusting the installation position of the parallel servo motor. The inner side of the second housing (102) is provided with a stepper motor control switch (8) for controlling the stepper motor (2). The stepper motor control switch (8) is used to control the start time and speed of the stepper motor.
2. The experimental device for a helicopter parallel servo motor torque switch according to claim 1, characterized in that, A second flexible coupling (9) is provided between the stepper motor (2) and the worm gear reducer (3).
3. The experimental device for a helicopter parallel servo motor torque switch according to claim 1, characterized in that, The first housing (101) has a power module (11) located below the mounting panel (5) inside. The power module (11) is electrically connected to the stepper motor (2), torque sensor (6) and stepper motor control switch (8) through wires. The stepper motor control switch (8) is electrically connected to the stepper motor (2) and torque sensor (6) through wires. The mounting panel (5) has wire through holes (12). The wires on the power module (11) are electrically connected to the stepper motor (2), torque sensor (6) and stepper motor control switch (8) through the wire through holes (12).
4. The experimental device for a helicopter parallel servo motor torque switch according to claim 3, characterized in that, The power module (11) can be selectively connected to a DC or AC power source. A current selection switch for selecting AC or DC current is electrically connected to the power transmission terminal of the power module (11). The power module (11) is electrically connected to the stepper motor (2) and the stepper motor control switch (8) to form a stepper motor control circuit. A stepper motor start / stop switch for controlling the start, stop and direction of the stepper motor is also electrically connected to the stepper motor control circuit.
5. The experimental device for a helicopter parallel servo motor torque switch according to claim 3, characterized in that, The mounting panel (5) is also provided with a first display (10) and a second display (13). The first display (10) is used to display the torque detected by the torque sensor, and the second display (13) is used to display the voltage and current of the parallel servo motor. The first display (10) is electrically connected to the torque sensor (6) and the power module (11) to form a torque detection circuit. The parallel servo motor is also connected to a load circuit. The load circuit is provided with an unload selection switch that allows selection of no load connection or simulated no-load environment or connected load to simulate load working environment, as well as a voltage sensor and a current sensor. The second display (13) is connected to the power module (11), the voltage sensor and the current sensor to form a voltage and current detection circuit.