Multifunctional engine testboard for small aircraft

Abstract

The utility model relates to a testing device for an engine debugging stage, in particular to a multifunctional engine test board for a small aircraft, which can simultaneously complete the testing of the engine debugging stage and the monitoring and recording of parameters, and is matched with rack parameter adjusting software to realize the rotating speed detection of the engine and the temperature detection of a point to be tested. Engine tension detection and other testing functions are realized. A multifunctional engine testboard comprises a fixing mechanism, a rotating speed detection mechanism, a temperature detection mechanism, a tension detection mechanism and a data acquisition and recording mechanism, a main body part of the multifunctional engine testboard is formed by welding high-strength composite steel, and a movable part is fixed to the main body part through bolts. According to the utility model, various complex device functions in the engine testing process can be realized at the same time.

Description

Technical Field

[0001] The utility model relates to a multi-functional engine test bench for small aircraft, belonging to the technical field of engine test devices. Background Technique

[0002] With the development of production and science and technology, aircraft engines have developed extremely rapidly in terms of both output and variety and quality. Currently, the numerous types of aircraft engines also bring certain difficulties to daily selection and use. Different types of aircraft require aircraft engines that match their performance. During the engine debugging process, the engine speed, temperature, pulling force, etc. need to be detected separately. Currently, the engine test devices for model aircraft on the market have problems such as single test function; insufficient accuracy and precision; high complexity and operation difficulty, requiring professional skills and knowledge to operate and interpret test results; lack of powerful data processing and analysis capabilities, resulting in low data utilization rate, etc.

[0003] In view of the above, an efficient and accurate engine test bench is crucial for evaluating engine performance, optimizing flight effects, and ensuring flight safety. Therefore, it has great practical significance to design a multi-functional and easy-to-operate engine test bench for model aircraft. Summary of the Invention

[0004] In order to simultaneously detect relevant data such as the engine speed, temperature, and pulling force during the engine debugging process, the utility model proposes a multi-functional engine test bench for small aircraft. This test bench can simultaneously complete the tests during the engine debugging stage, parameter monitoring and recording, and data processing and analysis, and cooperate with the bench tuning parameter software to achieve engine speed detection, temperature detection at the measurement points, engine pulling force detection, etc.

[0005] In order to solve the above problems, the technical solution adopted by the utility model is:

[0006] The multi-functional engine test bench for small aircraft is characterized in that it includes a bench main body, and a speed detection mechanism, a temperature detection mechanism, a pulling force detection mechanism, and a data acquisition, recording and processing mechanism installed on the bench main body;

[0007] The bench main body serves as the support base of the entire test bench and is welded by high-strength composite steel. It includes a base, support vertical plates welded on both sides of the base, and a first cross beam and a second cross beam welded between the two support vertical plates. Among them, the upper part of the two support vertical plates is set as the engine installation platform; the second cross beam is located on one side of the engine installation platform for installing the speed detection mechanism and the pulling force detection mechanism;

[0008] The rotation speed detection mechanism includes a photoelectric rotation speed sensor mounting post, a photoelectric rotation speed sensor mounted on the photoelectric rotation speed sensor mounting post, and a reflective sticker for pasting on the position of the engine to be measured.

[0009] The temperature detection mechanism uses a patch-type temperature sensor.

[0010] The tensile force detection mechanism consists of a tensile force sensor and a hook. The hook is used to connect the engine, and cooperate with the tensile force sensor to realize real-time and accurate sensing of the tensile force generated by the engine.

[0011] The data recording mechanism includes a sensor distribution box and a computer control system communicatively connected thereto.

[0012] Further, in order to adapt to engines of different model sizes, the position of the engine mounting table is set as an adjustable structure. The engine mounting table is connected to the two side support vertical plates through a slider guide rail, and the position of the adjusted engine mounting table is locked by a positioning screw along the sliding rail direction.

[0013] Further, a protective cover is adapted on the engine mounting table.

[0014] Further, universal wheels are installed on the base of the bench body.

[0015] Further, a protective cover is installed above the engine mounting table.

[0016] Further, a reinforcing diagonal brace is tied between the top of the support vertical plate and the base.

[0017] The multi-functional engine test bench of the present utility model has the following remarkable beneficial effects compared with the traditional similar test devices:

[0018] 1. Highly integrated, time-saving and simple in test operation. Compared with other current devices, the multi-functional engine test bench integrates other various devices, combines multiple functions such as rotation speed detection, temperature detection, tensile force detection and powerful data acquisition, recording and processing, avoids multiple installations and dismountings of the engine, effectively improves efficiency, saves time, and has simple operation.

[0019] 2. Safe and reliable in the test process. The multi-functional engine test bench is equipped with a protective cover, which can protect the personal safety of the tester in case of special situations such as insecure engine installation, propeller disengagement or breakage.

[0020] 3. Highly intelligent and simple in operation. By introducing advanced control systems and data acquisition technologies, the test bench realizes automated and intelligent operation and management, and the manual operation is simple.

[0021] 4. The test data has high precision and strong accuracy. By installing high-precision sensors and high-speed signal transmission lines, relatively accurate data can be obtained. Then, combined with the computer bench parameter adjustment software, various data are comprehensively calibrated to ensure the precision and accuracy of the test data.

[0022] 5. It has strong data processing and analysis capabilities and high data utilization rate. The computer bench parameter adjustment software has powerful functions. It can effectively process and analyze a large amount of data generated by engine tests, extract useful information, and provide accurate values corresponding to rotational speed, temperature, and tensile force, as well as line graphs of the corresponding value changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 : Schematic structural diagram of the multi-functional engine test bench for small aircraft in Embodiment 1;

[0024] Figure 2 : Figure 1 Side view of

[0025] Figure 3 : Figure 1 Side view of

[0026] Figure 4 : Figure 1 Top view of

[0027] In the figure, 1 is the bench main body, 1a is the base, 1b is the supporting vertical plate, 1c is the first cross beam, 1d is the second cross beam, 1e is the strengthening diagonal brace, 5 is the engine mounting table, 2 is the slider guide rail, 4 is the protective cover, 3 is the moving wheel, 8 is the sensor distribution box, 6 is the hook, 7 is the tensile force sensor, 9 is the optoelectronic rotational speed sensor mounting column, 10 is the optoelectronic rotational speed sensor, and 11 is the temperature sensor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following will give a detailed description of the present invention with reference to the drawings.

[0029] Embodiment 1

[0030] The multi-functional engine test bench for small aircraft has a structure as Figures 1-4 shown, including the bench main body 1, and a rotational speed detection mechanism, a temperature detection mechanism, a tensile force detection mechanism, and a data acquisition, recording, and processing mechanism installed on the bench main body 1. The bench main body 1 serves as the bearing platform for the entire working process, and the rotational speed detection mechanism, temperature detection mechanism, tensile force detection mechanism, and data acquisition and recording mechanism respectively rely on this platform to coordinate and complete the test process.

[0031] The bench body 1 is welded by high-strength composite steel, and includes a main body skeleton, an engine mounting table 5, a slider guide rail 2, a protective cover 4 and moving wheels 3. When the engine starts, especially when it is at full power, a large reaction force will be generated and act on the test bench. Therefore, the main body skeleton in this embodiment is designed as a reinforced structure, including a base 1a, support vertical plates 1b welded on both sides of the base 1a, and a first cross beam 1c and a second cross beam 1d welded between the two support vertical plates 1b. Both the base 1a and the support vertical plates 1b are frame structures with reinforcing beams. A reinforcing diagonal brace 1e is connected between the top of the support vertical plates 1b and the base 1a. The moving wheels 3 are 4 universal wheels, all placed under the base 1a, and can cooperate with each other to enable the multi-functional engine test bench to move freely in the plane. The engine mounting table 5 is installed above the two support vertical plates 1b through the slider guide rail 2. The engine mounting table 5 is a high-strength composite steel flat plate for fixing the engine. The engine mounting table 5 is located on one side of the second cross beam 1d, and the second cross beam 1d is used to install a rotational speed detection mechanism and a tensile force detection mechanism. The mutual sliding cooperation of the slider guide rail 2 can enable the engine mounting table 5 to slide back and forth above the main body skeleton to adapt to more engine models. At the same time, positioning screws are arranged along the direction of the slide rail to lock the position of the adjusted engine mounting table. A protective cover 4 for protecting the operator is installed above the engine mounting table 5. The protective cover 4 is a detachable structure for easy adjustment of its position.

[0032] The rotational speed detection mechanism is arranged on the second cross beam 1d of the main body skeleton, and includes an optoelectronic rotational speed sensor mounting post 9, an optoelectronic rotational speed sensor 10 installed above the optoelectronic rotational speed sensor mounting post 9, and a reflective sticker. The reflective sticker is used to reflect the rotation action of the engine propeller, and the attachment position on the engine is selected according to the actual situation. The optoelectronic rotational speed sensor 10 is used to sense the rotation action of the engine propeller reflected on the reflective sticker, so as to realize the rotational speed detection.

[0033] The temperature detection mechanism uses a patch type temperature sensor 11, which can be attached to the surface to be measured of the engine mounting table 5 according to requirements to sense the engine temperature in real time.

[0034] The tensile force detection mechanism is also arranged on the second cross beam 1d of the main body skeleton, and is composed of a tensile force sensor 7 and a hook 6. The hook 6 is used to connect the engine, and can cooperate with the tensile force sensor 7 to realize real-time and accurate sensing of the tensile force generated by the engine.

[0035] The data recording mechanism includes a sensor distribution box 8 and a remote computer control system communicatively connected thereto. The sensor distribution box 8 is installed on the base 1a, and its main function is to centrally process the signals of multiple sensors, and send the signals of each sensor to the remote computer control system through a cable, thereby simplifying the wiring process, saving space, and making the system easier to maintain. The computer control system is installed and runs bench parameter adjustment software for displaying, processing, and recording all data obtained from the engine test.

[0036] For the multi-functional engine test bench of the small aircraft in this embodiment, the test operation process is as follows:

[0037] I. Preparation before testing

[0038] 1. Power on the tension sensor, photoelectric speed sensor, and temperature sensor on the bench, and connect the connecting wires of each sensor to the sensor distribution box, and connect them to the computer control system running the bench parameter adjustment software through the sensor distribution box.

[0039] 2. Tension test preparation: After fixing the engine to the engine mounting table, connect the engine to the hook of the tension sensor.

[0040] 3. Speed test preparation: Stick the reflective sticker to the position to be measured on the engine, such as the middle cover of the engine or the blade of the propeller. Align the photoelectric speed sensor with the reflective sticker. If the indicator light on the speed sensor lights up when aligned, it means the installation position is correct.

[0041] 4. Temperature test preparation: Attach the temperature sensor to the position to be measured.

[0042] II. Tension test

[0043] After connecting all the devices, the relevant data can be presented on the display interface. First, click 'Zero the tension measurement value' on the display interface, and then rotate the engine to generate tension, and the change trend of the tension can be seen on the display interface.

[0044] III. Speed test

[0045] After sticking the reflective sticker and aligning the photoelectric speed sensor, the engine speed test can be carried out. When the engine rotates, the corresponding speed data and the corresponding line chart will change.

[0046] IV. Temperature test

[0047] After tightly attaching the temperature sensor to the area to be measured, when the temperature of the area to be measured changes, the corresponding temperature data and the corresponding line chart will change.

[0048] V. Measurement data recording

[0049] When the start measurement is clicked, the control system starts to display and record the current real-time values, and the data is saved to the system after the measurement stops.

Claims

1. A multifunctional engine test bench for small aircraft, characterized in that: It includes a test bench main body, and a rotation speed detection mechanism, a temperature detection mechanism, a tension detection mechanism and a data acquisition, recording and processing mechanism installed on the test bench main body; The test bench body is a supporting base of the entire test bench, which is welded from high-strength composite steel and includes a base, support vertical plates welded to both sides of the base, and a first crossbeam and a second crossbeam welded between the support vertical plates on both sides, wherein the upper part of the two support vertical plates is provided with an engine mounting platform; the second crossbeam is located on one side of the engine mounting platform and is used to install a speed detection mechanism and a tension detection mechanism; The speed detection mechanism includes a photoelectric speed sensor mounting post, a photoelectric speed sensor mounted on the photoelectric speed sensor mounting post, and a reflective sticker, wherein the reflective sticker is used to be pasted to a position to be tested on the engine; The temperature detection mechanism adopts a patch temperature sensor; The tension detection mechanism is composed of a tension sensor and a hook, and the hook is used to connect the engine and cooperate with the tension sensor to realize real-time and accurate sensing of the tension generated by the engine; The data acquisition, recording and processing mechanism includes a sensor junction box and a computer control system communicatively connected thereto.

2. The small aircraft multifunctional engine test bench according to claim 1, characterized in that: The position of the engine mounting platform is set as an adjustable structure. The engine mounting platform is connected to the supporting vertical plates on both sides through a slider guide rail, and the adjusted engine mounting platform is locked in position through positioning screws along the slide rail direction.

3. The small aircraft multifunctional engine test bench according to claim 1, characterized in that: The engine mounting platform is adapted to be provided with a protective cover.

4. The small aircraft multifunctional engine test bench according to claim 1, characterized in that: Universal wheels are installed on the base of the platform body.

5. The small aircraft multifunctional engine test bench according to claim 1, characterized in that: A reinforcing diagonal brace is connected between the top of the supporting vertical plate and the base.

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