An engine test system

Abstract

The application discloses an engine test system, and relates to the technical field of engine testing equipment, which comprises a test movable frame, a test fixed frame, a force measuring assembly and a calibration assembly. The test fixed frame is fixedly arranged, the test movable frame is arranged on the inner side of the test fixed frame, the force measuring assembly and the calibration assembly are arranged between the test movable frame and the test fixed frame, the force measuring assembly comprises a horizontal force measuring device, an axial force measuring device and a vertical force measuring device, the horizontal force measuring device is arranged horizontally between the test movable frame and the test fixed frame, the axial force measuring device is arranged horizontally and perpendicularly to the horizontal force measuring device between the test movable frame and the test fixed frame, and the vertical force measuring device is arranged vertically between the test movable frame and the test fixed frame. The application can simulate and measure the thrust direction and size during the engine operation, thereby assisting the staff in the debugging work of the engine.

Description

Technical Field

[0001] This invention relates to the field of engine testing equipment technology, specifically to an engine test system. Background Technology

[0002] During flight, aircraft engines need to ensure the stability of their thrust. If there is a deviation in the output thrust of the engine during flight, it will cause a significant change in the flight trajectory of the aircraft and will also increase the torque pressure that the aircraft needs to bear. Therefore, during the development of aircraft engines, it is necessary to test the engine. Existing technologies require the provision of test systems for aircraft engines. Summary of the Invention

[0003] The purpose of this invention is to provide an engine testing system that addresses the shortcomings of existing technologies.

[0004] To achieve the above objectives, the present invention adopts the following solution:

[0005] One embodiment of an engine test system includes a test frame, a test stationary frame, a force measuring component, and a calibration component. The test stationary frame is fixedly installed, and the test frame is located inside the test stationary frame. The force measuring component and the calibration component are disposed between the test frame and the test stationary frame. The force measuring component includes a horizontal force gauge, an axial force gauge, and a vertical force gauge. The horizontal force gauge is horizontally installed between the test frame and the test stationary frame. The axial force gauge is horizontally installed and perpendicular to the horizontal force gauge between the test frame and the test stationary frame. The vertical force gauge is vertically installed between the test frame and the test stationary frame. Several calibration components are provided, with one calibration component corresponding to the side end of each horizontal force gauge, axial force gauge, and vertical force gauge.

[0006] A fastening device is provided between the engine and the mounting frame. The fastening device includes a mounting shell, an adjustment mechanism, and a first limiting member. The adjustment mechanism includes a vertical rod, a horizontal rod, and an adjustment handle. Two vertical rods are provided. The adjustment handle is fixedly located at the top of the vertical rods. The two vertical rods are rotatably mounted inside the mounting shell. A first bevel gear is provided at the upper end of each of the two vertical rods. A lead screw with opposite helical directions is provided at the upper and lower parts of the two vertical rods. A lead screw sleeve is provided on the first limiting member. Four first limiting members are provided. All four first limiting members are slidably mounted on the mounting shell. The four first limiting members are respectively sleeved on the upper and lower parts of the two vertical rods. The lead screw sleeve on the first limiting member and the lead screw on the vertical rod are mutually engaged. A second bevel gear is provided at both ends of the horizontal rod. The horizontal rod is rotatably mounted on the mounting shell. The first bevel gear and the second bevel gear mesh with each other.

[0007] Furthermore, the horizontal force gauge, axial force gauge, and vertical force gauge have the same structure. The horizontal force gauge includes a working sensor and a universal connector. Two universal connectors are provided. One end of the two universal connectors is installed on both sides of the working sensor, and the other end of the two universal connectors is installed on the test moving frame and the test stationary frame, respectively.

[0008] Furthermore, the calibration assembly includes a standard sensor, a control unit, and a hydraulic cylinder. The standard sensor and the main hydraulic cylinder are connected and disposed between the test moving frame and the test stationary frame. The standard sensor is electrically connected to the control unit, and the control unit is connected to the hydraulic cylinder.

[0009] Furthermore, the control unit includes a signal measuring instrument, a controller, a speed regulating motor, and an oil pump. The signal measuring instrument is electrically connected to a standard sensor. The signal measuring instrument, the controller, and the speed regulating motor are electrically connected in sequence. The output end of the speed regulating motor is connected to the oil pump, and the oil pump's oil delivery pipeline is connected to the hydraulic cylinder.

[0010] Furthermore, a manual fine-tuning valve is installed inside the oil pump.

[0011] Furthermore, two horizontal force gauges are provided, which are arranged in the same direction and symmetrically between the test moving frame and the test stationary frame. Two axial force gauges are provided, which are arranged in the same direction and symmetrically between the test moving frame and the test stationary frame. Two vertical force gauges are provided, which are arranged in the same direction and symmetrically between the test moving frame and the test stationary frame.

[0012] Furthermore, the measurement range of the horizontal force gauge, axial force gauge, and vertical force gauge is ±300kN.

[0013] A second embodiment of an engine test system includes a test frame, a test stationary frame, a force measuring component, and a calibration component. The test stationary frame is fixedly installed, and the test frame is located inside the test stationary frame. The force measuring component and the calibration component are disposed between the test frame and the test stationary frame. The force measuring component includes a horizontal force gauge, an axial force gauge, and a vertical force gauge. The horizontal force gauge is horizontally installed between the test frame and the test stationary frame. The axial force gauge is horizontally installed and perpendicular to the horizontal force gauge between the test frame and the test stationary frame. The vertical force gauge is vertically installed between the test frame and the test stationary frame. Several calibration components are provided, with one calibration component corresponding to the side end of each horizontal force gauge, axial force gauge, and vertical force gauge.

[0014] A fastening device is provided between the engine and the mounting frame. The fastening device includes a mounting shell, an adjustment mechanism, and a first limiting member. The adjustment mechanism includes a vertical rod, a horizontal rod, and an adjustment handle. Two vertical rods are provided. The adjustment handle is fixedly located at the top of the vertical rods. The two vertical rods are rotatably mounted inside the mounting shell. A first bevel gear is provided at the upper end of each of the two vertical rods. A lead screw with opposite helical directions is provided at the upper and lower parts of the two vertical rods. A lead screw sleeve is provided on the first limiting member. Four first limiting members are provided. All four first limiting members are slidably mounted on the mounting shell. The four first limiting members are respectively sleeved on the upper and lower parts of the two vertical rods. The lead screw sleeve on the first limiting member and the lead screw on the vertical rod are mutually engaged. A second bevel gear is provided at both ends of the horizontal rod. The horizontal rod is rotatably mounted on the mounting shell. The first bevel gear and the second bevel gear mesh with each other.

[0015] Furthermore, the horizontal force gauge, axial force gauge, and vertical force gauge have the same structure. The horizontal force gauge includes a working sensor and a universal connector. Two universal connectors are provided. One end of the two universal connectors is installed on both sides of the working sensor, and the other end of the two universal connectors is installed on the test moving frame and the test stationary frame, respectively.

[0016] Furthermore, the calibration assembly includes a standard sensor, a control unit, and a hydraulic cylinder. The standard sensor and the main hydraulic cylinder are connected and disposed between the test moving frame and the test stationary frame. The standard sensor is electrically connected to the control unit, and the control unit is connected to the hydraulic cylinder.

[0017] Furthermore, the control unit includes a signal measuring instrument, a controller, a speed regulating motor, and an oil pump. The signal measuring instrument is electrically connected to a standard sensor. The signal measuring instrument, the controller, and the speed regulating motor are electrically connected in sequence. The output end of the speed regulating motor is connected to the oil pump, and the oil pump's oil delivery pipeline is connected to the hydraulic cylinder.

[0018] Furthermore, a manual fine-tuning valve is installed inside the oil pump.

[0019] Furthermore, three horizontal force gauges are provided, which are arranged in the same direction and symmetrically between the test moving frame and the test stationary frame. Three axial force gauges are provided, which are arranged in the same direction and symmetrically between the test moving frame and the test stationary frame. Three vertical force gauges are provided, which are arranged in the same direction and symmetrically between the test moving frame and the test stationary frame.

[0020] Furthermore, the measurement range of the horizontal force gauge, axial force gauge, and vertical force gauge is ±300kN.

[0021] Furthermore, it also includes second limiting members. The adjustment mechanism is provided in two parts, and the second limiting members are provided in four parts. The four first limiting members are provided in one adjustment mechanism, and the four second limiting members are provided in another adjustment mechanism. A horizontal roller is rotatably provided on the first limiting member, and a vertical roller is rotatably provided on the second limiting member.

[0022] The advantages of this invention compared to the prior art are:

[0023] Firstly, this application involves mounting the engine on the test frame and using a calibration component to calibrate and adjust the tension value between the test frame and the test stationary frame. Then, the engine is started for a hot test. During engine operation, thrust is generated, and the force measuring component measures and records the force at various angles during engine operation, thereby obtaining engine test data to facilitate engine debugging by the staff.

[0024] Secondly, in order to facilitate the installation of the engine, a fastening device is provided in this application. The operator controls the first and second limiting parts to abut against the outer wall of the engine by adjusting the handle, thereby achieving the effect of lateral adjustment, angle adjustment and complete fixation of the engine. Attached Figure Description

[0025] Figure 1 This is a block diagram of the overall structure of the engine test system;

[0026] Figure 2 This is a block diagram showing the combined structure of the force measuring component and the calibration component.

[0027] Figure 3 This is a three-dimensional structural diagram of the fastening device;

[0028] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0029] Figure 5 This is a cross-sectional schematic diagram of the fastening device.

[0030] Figure label:

[0031] Mounting housing 1, adjusting mechanism 2, vertical rod 21, horizontal rod 22, adjusting handle 23, first bevel gear 24, second bevel gear 25, first limiting member 3, second limiting member 4. Detailed Implementation

[0032] An engine generates thrust during operation, which propels an aircraft to fly and turn. Therefore, the magnitude and angle of the torque generated by the engine during operation affect the flight stability of the aircraft. This application allows the engine to be installed in a device that can then be started and run, and the forces generated by the engine in various directions can be measured to assist personnel in debugging the engine.

[0033] Combination Figure 1 and Figure 2 As shown, one embodiment of an engine test system includes a test moving frame, a test stationary frame, a force measuring component, and a calibration component. The test stationary frame is fixedly installed, and the test moving frame is located inside the test stationary frame. The force measuring component and the calibration component are disposed between the test moving frame and the test stationary frame. The moving frame is mounted on the test moving frame via the force measuring component and the calibration component. The force measuring component includes a horizontal force gauge, an axial force gauge, and a vertical force gauge. The horizontal force gauge is horizontally positioned between the test moving frame and the test stationary frame, and the axial force gauge is horizontally positioned and perpendicular to the horizontal force gauge between the test moving frame and the test stationary frame. The vertical force gauge is vertically installed between the test vehicle moving frame and the test vehicle stationary frame. By using the horizontal force gauge, axial force gauge, and vertical force gauge, the horizontal force, axial force, and vertical force generated during engine operation can be detected separately, thereby accurately obtaining the driving force at various angles during engine operation. Several calibration components are provided, with a corresponding calibration component on the side end of each horizontal force gauge, axial force gauge, and vertical force gauge. The calibration components can be used to calibrate and adjust the connection force between the moving frame and the test vehicle stationary frame, thereby improving the measurement accuracy of the engine during the testing process.

[0034] Preferably, the horizontal force gauge, axial force gauge, and vertical force gauge have the same structure. The horizontal force gauge includes a working sensor and universal joints. Two universal joints are provided. One end of each universal joint is installed on both sides of the working sensor, and the other end of each universal joint is installed on the test vehicle moving frame and the test vehicle stationary frame, respectively. The universal joints are connected to the test vehicle moving frame and the test vehicle stationary frame, respectively. During the hot test of the engine, when the test vehicle moving frame is moved, the universal joints can adaptively adjust the angle, thereby ensuring the measurement accuracy of the working sensor.

[0035] Preferably, the calibration assembly includes a standard sensor, a control unit, and a hydraulic cylinder. The standard sensor and the main hydraulic cylinder are connected and disposed between the test run moving frame and the test run stationary frame. The standard sensor is electrically connected to the control unit, and the control unit is connected to the hydraulic cylinder.

[0036] The control unit includes a signal measuring instrument, a controller, a speed regulating motor, and an oil pump. The signal measuring instrument is electrically connected to a standard sensor. The signal measuring instrument, the controller, and the speed regulating motor are electrically connected in sequence. The output end of the speed regulating motor is connected to the oil pump. The oil pump's oil delivery pipeline is connected to a hydraulic cylinder. The oil pump is equipped with a manual fine-tuning valve. Through the manual fine-tuning valve, the oil pump can be manually controlled to input hydraulic oil into the hydraulic cylinder, thereby achieving manual pressure adjustment.

[0037] During operation, the standard component measures the connection vector force between the test vehicle moving frame and the test vehicle stationary frame using standard sensors. The vector force measured by the standard sensors is then input into a signal measuring instrument, which transmits the data to the controller. The controller inputs an electrical signal to the speed-regulating motor according to the set program, starting the speed-regulating motor to run according to the set value and driving the oil pump. The oil pump controls the input of hydraulic oil into the hydraulic cylinder, thereby controlling the extension and retraction of the hydraulic cylinder. This allows for the adjustment of the pressure between the test vehicle moving frame and the test vehicle stationary frame. During the adjustment process of the hydraulic cylinder, the standard sensors continuously monitor the vector force value, thus enabling precise control.

[0038] Preferably, two horizontal force gauges are provided, symmetrically arranged in the same direction between the test frame and the test stationary frame; two axial force gauges are provided, symmetrically arranged in the same direction between the test frame and the test stationary frame; and two vertical force gauges are provided, symmetrically arranged in the same direction between the test frame and the test stationary frame. The coordinated arrangement of the two horizontal force gauges, two axial force gauges, and two vertical force gauges enables the detection of forces in six vector directions during engine hot testing, thereby further ensuring the stability of the testing equipment and the accuracy of the data.

[0039] Preferably, the measuring range of the horizontal force gauge, axial force gauge and vertical force gauge is ±300kN.

[0040] Combination Figure 1 and Figure 2As shown, a second embodiment of an engine test system includes a test moving frame, a test stationary frame, a force measuring component, and a calibration component. The test stationary frame is fixedly installed, and the test moving frame is located inside the test stationary frame. The force measuring component and the calibration component are disposed between the test moving frame and the test stationary frame. The moving frame is mounted on the test moving frame via the force measuring component and the calibration component. The force measuring component includes a horizontal force gauge, an axial force gauge, and a vertical force gauge. The horizontal force gauge is horizontally positioned between the test moving frame and the test stationary frame, and the axial force gauge is horizontally positioned and perpendicular to the horizontal force gauge between the test moving frame and the test stationary frame. The vertical force gauge is vertically installed between the test vehicle moving frame and the test vehicle stationary frame. By using the horizontal force gauge, axial force gauge, and vertical force gauge, the horizontal force, axial force, and vertical force generated during engine operation can be detected separately, thereby accurately obtaining the driving force at various angles during engine operation. Several calibration components are provided, with a corresponding calibration component on the side end of each horizontal force gauge, axial force gauge, and vertical force gauge. The calibration components can be used to calibrate and adjust the connection force between the moving frame and the test vehicle stationary frame, thereby improving the measurement accuracy of the engine during the testing process.

[0041] Preferably, the horizontal force gauge, axial force gauge, and vertical force gauge have the same structure. The horizontal force gauge includes a working sensor and universal joints. Two universal joints are provided. One end of each universal joint is installed on both sides of the working sensor, and the other end of each universal joint is installed on the test vehicle moving frame and the test vehicle stationary frame, respectively. The universal joints are connected to the test vehicle moving frame and the test vehicle stationary frame, respectively. During the hot test of the engine, when the test vehicle moving frame is moved, the universal joints can adaptively adjust the angle, thereby ensuring the measurement accuracy of the working sensor.

[0042] Preferably, the calibration assembly includes a standard sensor, a control unit, and a hydraulic cylinder. The standard sensor and the main hydraulic cylinder are connected and disposed between the test run moving frame and the test run stationary frame. The standard sensor is electrically connected to the control unit, and the control unit is connected to the hydraulic cylinder.

[0043] The control unit includes a signal measuring instrument, a controller, a speed regulating motor, and an oil pump. The signal measuring instrument is electrically connected to a standard sensor. The signal measuring instrument, the controller, and the speed regulating motor are electrically connected in sequence. The output end of the speed regulating motor is connected to the oil pump. The oil pump's oil delivery pipeline is connected to a hydraulic cylinder. The oil pump is equipped with a manual fine-tuning valve. Through the manual fine-tuning valve, the oil pump can be manually controlled to input hydraulic oil into the hydraulic cylinder, thereby achieving manual pressure adjustment.

[0044] During operation, the standard component measures the connection vector force between the test vehicle moving frame and the test vehicle stationary frame using standard sensors. The vector force measured by the standard sensors is then input into a signal measuring instrument, which transmits the data to the controller. The controller inputs an electrical signal to the speed-regulating motor according to the set program, starting the speed-regulating motor to run according to the set value and driving the oil pump. The oil pump controls the input of hydraulic oil into the hydraulic cylinder, thereby controlling the extension and retraction of the hydraulic cylinder. This allows for the adjustment of the pressure between the test vehicle moving frame and the test vehicle stationary frame. During the adjustment process of the hydraulic cylinder, the standard sensors continuously monitor the vector force value, thus enabling precise control.

[0045] Preferably, three horizontal force gauges are provided, and the three horizontal force gauges are arranged in the same direction and symmetrically between the test moving frame and the test stationary frame. The arrangement points of the three horizontal force gauges are connected to form an isosceles triangle, thereby improving the stability of the horizontal force measurement.

[0046] Three axial force measuring devices are provided. The three axial force measuring devices are arranged in the same direction and symmetrically between the test moving frame and the test stationary frame. The arrangement points of the three axial force measuring devices are connected to form an isosceles triangle, which can improve the stability of axial force measurement.

[0047] Three vertical force gauges are provided, and the three vertical force gauges are symmetrically arranged in the same direction between the test moving frame and the test stationary frame. The arrangement points of the three vertical force gauges form an isosceles triangle, which can improve the stability of vertical force measurement.

[0048] By using a combination of three horizontal force gauges, three axial force gauges, and three vertical force gauges, forces in nine vector directions can be detected during engine hot-running, thus enabling more accurate detection of the appropriate forces on the engine.

[0049] The measurement range of the horizontal force gauge, axial force gauge and vertical force gauge is ±300kN.

[0050] In this application, the engine is installed on the test frame, and the pressure between the test frame and the test stationary frame is detected and calibrated by the calibration component. Then, the engine is hot-tested, the engine is started to generate thrust, and the torque generated at various angles during the engine operation is detected and recorded by the force measuring component, so as to calculate the thrust state of the engine during operation, so as to facilitate the R&D staff to debug the engine.

[0051] To facilitate engine mounting, a fastening device is provided. This device includes a mounting housing 1, an adjusting mechanism 2, a first limiting member 3, and a second limiting member 4. Two adjusting mechanisms 2 are provided, with the first limiting member 3 and the second limiting member 4 respectively mounted on the two mechanisms. Each adjusting mechanism 2 includes a vertical rod 21, a horizontal rod 22, and an adjusting handle 23. Two vertical rods 21 are provided, and the adjusting handle 23 is fixedly mounted on the top of each vertical rod 21. The two vertical rods 21 are rotatably mounted within the mounting housing 1. A first bevel gear 24 is provided at the upper end of each of the two vertical rods 21. Lead screws with opposite helical directions are provided at the upper and lower parts of each vertical rod 21. A lead screw sleeve is provided on the first limiting member 3. Second bevel gears 25 are provided at both ends of the horizontal rod 22. The horizontal rod 22 is rotatably mounted on the mounting housing 1. The first bevel gear and the second bevel gear 25 mesh with each other.

[0052] Four of the first limiting member 3 and the second limiting member 4 are provided. The four first limiting members 3 are slidably disposed on the mounting shell 1. The four first limiting members 3 are respectively sleeved on the upper and lower parts of the two vertical rods 21. The screw sleeve on the first limiting member 3 is engaged with the screw on the vertical rod 21.

[0053] Four second limiting members 4 are slidably disposed on the mounting shell 1. The second limiting members 4 are respectively sleeved on the two vertical rods 21 of another adjusting mechanism 2. The screw sleeve on the second limiting member 4 is engaged with the screw on the vertical rod 21.

[0054] A horizontal roller is rotatably mounted on the first limiting member 3, and a vertical roller is rotatably mounted on the second limiting member 4.

[0055] In use, the engine is first pushed into the inner side of the mounting housing 1. Then, the operator rotates the adjustment handles 23 on the two adjustment mechanisms 2 to control the first limiting member 3 and the second limiting member 4 to move laterally and abut against the outer wall of the engine. The rotation of the adjustment handles 23 drives the single vertical rod 21 to rotate. The first bevel gear 24 on the vertical rod 21 and the second bevel gear 25 on the horizontal rod 22 cooperate to drive the horizontal rod 22 to rotate. The second bevel gear 25 on the horizontal rod 22 cooperates with the first bevel gear 24 on the other vertical rod 21, so that the two vertical rods 21 rotate synchronously. During the rotation of the two vertical rods 21, the upper lead screw is driven, so that the lead screw sleeve that matches it moves laterally under the rotation of the lead screw. The upper and lower parts of the vertical rod 21 are respectively provided with lead screws with opposite helical directions. Therefore, the first limiting member 3 and the second limiting member 4 at the upper and lower parts of the vertical rod 21 will move synchronously towards the middle under the action of the upper and lower lead screws, thereby achieving the positioning of the engine.

[0056] When the operator controls the four first limiting parts 3 to contact the outer wall of the engine, the engine can rotate at a certain angle because the first limiting parts 3 are equipped with transverse rollers, which makes it easier to fine-tune the engine.

[0057] When the operator controls the four second limiting parts 4 to contact the outer wall of the engine, the engine can move laterally within the mounting housing 1 because the second limiting parts 4 are equipped with vertical rollers that rotate on them, thus facilitating fine-tuning of the engine.

[0058] When the operator controls the four first limiting members 3 and the four second limiting members 4 to contact the outer wall of the engine simultaneously, the first limiting members 3 and the second limiting members 4 can limit the engine, thereby ensuring that the engine can stably carry out subsequent thrust tests.

[0059] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0060] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0061] In the description of this invention, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0062] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An engine testing system, characterized in that, The system includes a test frame, a test stationary frame, a force measuring component, and a calibration component. The test stationary frame is fixedly installed, and the test frame is located inside the test stationary frame. The force measuring component and the calibration component are located between the test frame and the test stationary frame. The force measuring component includes a horizontal force gauge, an axial force gauge, and a vertical force gauge. The horizontal force gauge is horizontally installed between the test frame and the test stationary frame. The axial force gauge is horizontally installed and perpendicular to the horizontal force gauge between the test frame and the test stationary frame. The vertical force gauge is vertically installed between the test frame and the test stationary frame. Several calibration components are provided, with one calibration component corresponding to the side end of each horizontal force gauge, axial force gauge, and vertical force gauge. A fastening device is provided between the engine and the mounting frame. The fastening device includes a mounting shell (1), an adjustment mechanism (2), and a first limiting member (3). The adjustment mechanism (2) includes a vertical rod (21), a horizontal rod (22), and an adjustment handle (23). Two vertical rods (21) are provided. The adjustment handle (23) is fixedly provided on the top of the vertical rods (21). The two vertical rods (21) are rotatably disposed in the mounting shell (1). The upper ends of the two vertical rods (21) are respectively provided with first bevel gears (24). The upper and lower parts of the two vertical rods (21) are respectively provided with helical directions. Conversely, the first limiting member (3) is provided with a screw sleeve, and four first limiting members (3) are provided. The four first limiting members (3) are slidably disposed on the mounting shell (1). The four first limiting members (3) are respectively sleeved on the upper and lower parts of the two vertical rods (21). The screw sleeve on the first limiting member (3) and the screw on the vertical rod (21) are mutually engaged. The two ends of the horizontal rod (22) are respectively provided with second bevel gears (25). The horizontal rod (22) is rotatably disposed on the mounting shell (1). The first transforming gear and the second bevel gear (25) mesh with each other. The horizontal force gauge, axial force gauge and vertical force gauge have the same structure. The horizontal force gauge includes a working sensor and a universal connector. Two universal connectors are provided. One end of the two universal connectors is installed on both sides of the working sensor, and the other end of the two universal connectors is installed on the test moving frame and the test stationary frame, respectively. It also includes a second limiting member (4). The adjustment mechanism (2) is provided in two parts, and the second limiting member (4) is provided in four parts. The four first limiting members (3) are provided in one adjustment mechanism (2), and the four second limiting members (4) are provided in another adjustment mechanism (2). A horizontal roller is rotatably provided on the first limiting member (3), and a vertical roller is rotatably provided on the second limiting member (4).

2. The engine test system according to claim 1, characterized in that, The calibration assembly includes a standard sensor, a control unit, and a hydraulic cylinder. The standard sensor and the main hydraulic cylinder are connected and disposed between the test run moving frame and the test run stationary frame. The standard sensor is electrically connected to the control unit, and the control unit is connected to the hydraulic cylinder.

3. The engine test system according to claim 2, characterized in that, The control unit includes a signal measuring instrument, a controller, a speed regulating motor, and an oil pump. The signal measuring instrument is electrically connected to a standard sensor. The signal measuring instrument, the controller, and the speed regulating motor are electrically connected in sequence. The output end of the speed regulating motor is connected to the oil pump. The oil pump's oil delivery pipeline is connected to the hydraulic cylinder.

4. The engine test system according to claim 3, characterized in that, The oil pump is equipped with a manual fine-tuning valve.

5. An engine testing system according to claim 1, characterized in that, Two horizontal force gauges are provided, and the two horizontal force gauges are arranged in the same direction and symmetrically between the test moving frame and the test stationary frame. Two axial force gauges are provided, and the two axial force gauges are arranged in the same direction and symmetrically between the test moving frame and the test stationary frame. Two vertical force gauges are provided, and the two vertical force gauges are arranged in the same direction and symmetrically between the test moving frame and the test stationary frame.

6. The engine test system according to claim 1, characterized in that, Three horizontal force gauges are provided, and the three horizontal force gauges are arranged in the same direction and symmetrically between the test moving frame and the test stationary frame. Three axial force gauges are provided, and the three axial force gauges are arranged in the same direction and symmetrically between the test moving frame and the test stationary frame. Three vertical force gauges are provided, and the three vertical force gauges are arranged in the same direction and symmetrically between the test moving frame and the test stationary frame.

7. An engine testing system according to claim 1, characterized in that, The measurement range of the horizontal force gauge, axial force gauge and vertical force gauge is ±300kN.

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