A dynamic pressure test bench for a piston engine

Abstract

This utility model provides a dynamic pressure test bench for a piston engine, relating to the field of test bench technology. A slider fixed to the lower surface of a base plate is connected to a slide rail mounted on the upper surface of the test bench. The slide rail is arranged along a first direction, and the thrust generated by the engine body acts on the base plate along the first direction. This allows the cooperation between the slide rail and the slider to counteract the bending moment of the engine body during operation, ensuring that the thrust generated by the engine body acts perpendicularly on the pressure detection component. This facilitates better thrust detection by the pressure detection component. Furthermore, the thrust is dynamically detected by an AGV (Automated Guided Vehicle) and engine fuel consumption can be detected by a weighing module. This alleviates the technical problem in the prior art where the weight of the aero-piston engine and the misalignment between the engine and the thrust sensor easily cause the thrust sensor to experience a large bending moment, resulting in errors in thrust detection during aero-piston engine operation.

Description

Technical Field

[0001] This utility model relates to the field of test bench technology, and in particular to a dynamic pressure test bench for piston engines. Background Technology

[0002] Piston engines are one of the power systems of aircraft, especially in small aircraft and unmanned aerial vehicles. The engine's operating condition, power output, and fuel consumption directly affect the aircraft's performance, safety, and economy. Aircraft engine test benches are generally used for ground testing to simulate the engine's operating conditions in flight and to test the engine's thrust and fuel consumption.

[0003] When using a traditional dynamic pressure test bench, if the aircraft piston engine is directly mounted on the thrust sensor, the aircraft piston engine has a certain weight, and the engine and the thrust sensor are not on the same axis, which can easily cause the thrust sensor to be subjected to a large bending moment, resulting in errors in the thrust detection of the aircraft piston engine during operation. Utility Model Content

[0004] The purpose of this invention is to provide a dynamic pressure test bench for a piston engine, so as to alleviate the technical problem in the prior art that the piston engine has a certain weight, and the misalignment between the engine and the thrust sensor can easily cause the thrust sensor to be subjected to a large bending moment, resulting in errors in the thrust sensor's thrust detection when the piston engine is working.

[0005] The present invention provides a dynamic pressure test bench for a piston engine, comprising: a frame, a base plate, a slide rail, a slider, an engine mounting plate, and pressure detection components;

[0006] The platform has a top plate, the top plate is provided with the slide rail, and the bottom of the base plate is provided with the slider, which is slidably connected to the slide rail;

[0007] The engine mounting plate is mounted on the base plate, and the engine body is mounted on the side surface of the engine mounting plate. The thrust generated by the engine body acts on the base plate in a first direction.

[0008] The pressure detection component is mounted on the substrate, and the pressure detection component is configured to detect the thrust force applied to the substrate.

[0009] The slide rail is arranged along a first direction so that the thrust generated by the engine body acts perpendicularly on the pressure detection component.

[0010] In an optional implementation,

[0011] The engine mounting plate is located at one end of the base plate, the pressure detection component is mounted on the end of the base plate away from the engine mounting plate, and the pressure detection component is mounted on the bottom of the base plate.

[0012] In an optional implementation,

[0013] The piston engine dynamic pressure test bench also includes a thrust plate.

[0014] The thrust plate is fixed to the top plate and is used to abut against the pressure detection component to prevent the base plate from moving.

[0015] In an optional implementation,

[0016] The piston engine dynamic pressure test bench also includes a first display table;

[0017] The first indicator is connected to the pressure detection component via a signal connection. The first indicator is mounted on the top plate and is used to display the pressure data detected by the pressure detection component.

[0018] In an optional implementation,

[0019] The piston engine dynamic pressure test bench also includes a weighing module;

[0020] The platform also has a base plate located below the top plate, and the weighing module is mounted on the base plate for weighing the oil storage device.

[0021] In an optional implementation,

[0022] The piston engine dynamic pressure test bench also includes a second indicator.

[0023] The second indicator is connected to the weighing module via a signal. The second indicator is mounted on the top plate and is used to display the weighing data detected by the weighing module.

[0024] In an optional implementation,

[0025] The piston engine dynamic pressure test bench also includes a chassis and a support frame;

[0026] The bottom of the support frame is connected to the chassis, the top of the support frame is connected to the top plate, the bottom plate is connected to the support frame, and the bottom plate is located between the top plate and the chassis.

[0027] In an optional implementation,

[0028] The chassis is rotatably connected to a drive wheel and a driven wheel;

[0029] The chassis is equipped with a drive component, which is connected to the drive wheel via a transmission.

[0030] In an optional implementation,

[0031] The bottom of the support frame is provided with leveling legs, and the bottom of the leveling legs is connected to the chassis.

[0032] In an optional implementation,

[0033] The slide rails are configured as one or more, with the slide rails arranged in parallel at intervals and symmetrically arranged along the axis of the substrate.

[0034] This utility model provides a dynamic pressure test bench for a piston engine. A slider fixed to the lower surface of a base plate is connected to a slide rail mounted on the upper surface of the test bench. The slide rail is arranged along a first direction, and the thrust generated by the engine body acts on the base plate along the first direction. This allows the cooperation between the slide rail and the slider to counteract the bending moment of the engine body during operation, ensuring that the thrust generated by the engine body acts perpendicularly on the pressure detection component. This facilitates better thrust detection of the engine body by the pressure detection component, alleviating the technical problem in the prior art where the aero-piston engine has a certain weight, and the misalignment between the engine and the thrust sensor easily causes the thrust sensor to be subjected to a large bending moment, resulting in errors in the thrust detection of the aero-piston engine during operation. Attached Figure Description

[0035] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0036] Figure 1 A schematic diagram of the overall structure of a piston engine dynamic pressure test bench provided for an embodiment of this utility model;

[0037] Figure 2 A schematic diagram of the structure of a piston engine dynamic pressure test bench from another perspective, provided as an embodiment of this utility model;

[0038] Figure 3 for Figure 1 Enlarged diagram of point A in the middle.

[0039] Icons: 1-Frame; 2-Base plate; 3-Slide rail; 4-Slider; 5-Engine mounting plate; 6-Engine body; 7-Pressure detection component; 8-Thrust plate; 9-First indicator; 10-Second indicator; 11-Weighing module; 12-Leveling support leg; 13-Chassis; 14-Drive component; 15-Drive wheel; 16-Driven wheel; 17-Support frame; 18-Top plate; 19-Base plate. Detailed Implementation

[0040] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0041] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 utility model according to the specific circumstances.

[0043] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0044] like Figure 1 , Figure 2 and Figure 3As shown, this embodiment provides a dynamic pressure test bench for a piston engine, including: a frame 1, a base plate 2, a slide rail 3, a slider 4, an engine mounting plate 5, and a pressure detection component 7; the frame 1 serves as the support for the overall device, and the top of the frame 1 has a top plate 18, on which a slide rail 3 is fixedly installed, and the slide rail 3 is arranged along a first direction, which is a horizontal direction and parallel to the length direction of the top plate 18. A slider 4 is provided at the bottom of the base plate 2, and the slider 4 is slidably connected to the slide rail 3. In order to improve stability, multiple slide rails 3 can be set, and each slide rail 3 is provided with two slide rails 3. The base plate 2 moves stably in the first direction through the arrangement of multiple sliders 4 and slide rails 3.

[0045] An engine mounting plate 5 is mounted on a base plate 2. The engine mounting plate 5 is mounted on the base plate 2 in a vertical direction. An engine body 6 is mounted on the outer surface of the engine mounting plate 5. The engine body 6 is specifically configured as an aviation piston engine, and the thrust generated by the engine body 6 acts on the base plate 2 in a first direction. A pressure detection component 7 is mounted on the base plate 2. The pressure detection component 7 is specifically configured as a pressure sensor, and the pressure detection component 7 is configured to detect the thrust received by the base plate 2. In addition, since the thrust direction is the same as the arrangement direction of the slide rail 3, the thrust acts on the pressure detection component 7 in the first direction, that is, the horizontal direction, thereby making the thrust generated by the engine body 6 act vertically on the pressure detection component 7.

[0046] This embodiment provides a dynamic pressure test bench for a piston engine. A slider 4 fixed on the lower surface of a base plate 2 is connected to a slide rail 3 mounted on the upper surface of a frame 1. The slide rail 3 is arranged along a first direction, and the thrust generated by the engine body 6 acts on the base plate 2 along the first direction. The cooperation between the slide rail 3 and the slider 4 can counteract the bending moment of the engine body 6 during operation, so that the thrust generated by the engine body 6 acts perpendicularly on the pressure detection component 7. This facilitates the pressure detection component 7 to better detect the thrust of the engine body 6, alleviating the technical problem in the prior art where the aero-piston engine has a certain weight, and the engine and thrust sensor are not aligned, which can easily cause the thrust sensor to be subjected to a large bending moment, resulting in errors in the thrust detection of the aero-piston engine during operation.

[0047] Based on the above embodiments, in an optional embodiment, the engine mounting plate 5 in the piston engine dynamic pressure test bench provided in this embodiment is located at the end of the base plate 2. The engine mounting plate 5 is fixed to the base plate 2 by bolts. The pressure detection component 7 is installed at the end of the base plate 2 away from the engine mounting plate 5 and at the bottom of the base plate 2. Specifically, the end of the base plate 2 away from the engine mounting plate 5 has a side plate, and the pressure sensor is installed on the side plate by bolts.

[0048] In an optional embodiment, a piston engine dynamic pressure test bench further includes a thrust plate 8; the thrust plate 8 is fixed on the top plate 18 and is used to abut against the pressure detection component 7 to prevent the base plate 2 from moving. Through the abutment between the thrust plate 8 and the pressure detection component 7, the thrust generated by the engine body 6 is blocked by the thrust plate 8, and the pressure detection component 7 is squeezed against the thrust plate 8. The pressure detection component 7 detects this squeezing force as the thrust of the engine body 6.

[0049] In an optional embodiment, a piston engine dynamic pressure test bench further includes a first indicator 9; the first indicator 9 is signal-connected to the pressure detection component 7, and is mounted on the top plate 18 to display the pressure data detected by the pressure detection component 7.

[0050] In an optional embodiment, a piston engine dynamic pressure test bench further includes a weighing module 11; the test bench 1 also has a base plate 19, which is located below the top plate 18, and the weighing module 11 is disposed on the base plate 19. The weighing module 11 is capable of weighing an oil storage device, which is not shown in the figure. The oil storage device supplies driving oil to the engine body 6.

[0051] In an optional embodiment, a piston engine dynamic pressure test bench further includes a second indicator 10; the second indicator 10 is signal-connected to the weighing module 11, the second indicator 10 is mounted on the top plate 18, and the weighing data detected by the weighing module 11 is displayed through the second indicator 10.

[0052] In an optional embodiment, a piston engine dynamic pressure test bench further includes a chassis 13 and a support frame 17; the bottom of the support frame 17 is connected to the chassis 13, the top of the support frame 17 is connected to the top plate 18, the bottom plate 19 is connected to the support frame 17, and the bottom plate 19 is located between the top plate 18 and the chassis 13.

[0053] In an optional embodiment, the chassis 13 is rotatably connected to a drive wheel 15 and a driven wheel 16; a drive component 14 is provided on the chassis 13, specifically a drive motor, and the drive component 14 is connected to the drive wheel 15 in a transmission manner, so that the drive component 14 drives the drive wheel 15 to rotate, enabling the overall test bench to move.

[0054] The base plate 19, drive wheel 15 and driven wheel 16 form an AGV (Automated Guided Vehicle).

[0055] In an optional embodiment, the bottom of the support frame 17 is provided with a leveling leg 12, the bottom of the leveling leg 12 is connected to the chassis 13, and the four corners of the support frame 17 are provided with leveling legs 12. The leveling leg 12 includes a threaded rod and a support foot. The top of the threaded rod is threadedly connected to the support frame 17, and the support foot is connected to the bottom of the threaded rod. Leveling is achieved by turning the threaded rod.

[0056] This utility model provides a dynamic pressure test bench for a piston engine, which achieves significant technical improvements and advantages through the following design:

[0057] 1. Improved structural stability

[0058] By fixing the slider 4 to the lower surface of the substrate 2 and forming a sliding connection with the slide rail 3 installed on the top plate 18, this cooperation method effectively enhances the stability of the substrate 2 on the top plate 18. Compared with traditional fixed or simple support structures, the sliding cooperation between the slide rail 3 and the slider 4 can better adapt to dynamic load changes and reduce structural displacement caused by vibration or uneven force.

[0059] 2. Moment cancellation mechanism

[0060] Aircraft piston engines generate significant thrust and bending moments during operation, which can lead to distorted sensor readings or equipment damage in traditional testing devices. In this invention, one end of the base plate 2 is fixed to the aircraft piston engine via an engine mounting plate 5, while the other end abuts against a thrust plate 8 via a pressure sensor. The cooperation of the slide rail 3 and the slider 4 effectively disperses and counteracts the bending moment generated during aircraft piston engine operation, thereby preventing the base plate 2 from tilting or deforming.

[0061] 3. Improved thrust detection accuracy

[0062] Based on the aforementioned moment cancellation, this invention ensures that the thrust generated by the aero-piston engine acts perpendicularly on the pressure sensor. This design allows the pressure sensor to measure the thrust value more accurately, avoiding measurement errors caused by bending moment or other non-perpendicular force components. Therefore, this test bench can provide more accurate and reliable thrust detection data, providing important support for the performance evaluation of aero-piston engines. Furthermore, the first indicator 9 is electrically connected to the pressure sensor, facilitating the display of the pressure from the pressure sensor. The weighing module 11 mounted on the base plate 19 is electrically connected to the second indicator 10, allowing the weighing module 11 to display the pressure value on the second indicator 10 when weighing the fuel storage device, thus facilitating the measurement of fuel consumption. The AGV trolley positioned below the test bench 1 allows for the simulation of the thrust and fuel consumption of the aero-piston engine during operation.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A dynamic pressure test bench for a piston engine, characterized in that, include: The test stand (1), base plate (2), slide rail (3), slider (4), engine mounting plate (5) and pressure detection component (7); The platform (1) has a top plate (18), on which the slide rail (3) is provided, and the bottom of the base plate (2) is provided with the slider (4), which is slidably connected to the slide rail (3); The engine mounting plate (5) is mounted on the base plate (2), and the engine body (6) is mounted on the side surface of the engine mounting plate (5), and the thrust generated by the engine body (6) acts on the base plate (2) in the first direction. The pressure detection component (7) is mounted on the substrate (2), and the pressure detection component (7) is configured to detect the thrust received by the substrate (2); The slide rail (3) is arranged along a first direction so that the thrust generated by the engine body (6) acts perpendicularly on the pressure detection component (7).

2. The piston engine dynamic pressure test bench according to claim 1, characterized in that, The engine mounting plate (5) is located at the end of the base plate (2), the pressure detection component (7) is installed at the end of the base plate (2) away from the engine mounting plate (5), and the pressure detection component (7) is installed at the bottom of the base plate (2).

3. The piston engine dynamic pressure test bench according to claim 1, characterized in that, The piston engine dynamic pressure test bench also includes a thrust plate (8); The thrust plate (8) is fixed to the top plate (18) and is used to abut against the pressure detection component (7) to prevent the base plate (2) from moving.

4. The piston engine dynamic pressure test bench according to claim 1, characterized in that, The piston engine dynamic pressure test bench also includes a first indicator (9); The first indicator (9) is signal connected to the pressure detection component (7), and the first indicator (9) is installed on the top plate (18). The first indicator (9) is used to display the pressure data detected by the pressure detection component (7).

5. The piston engine dynamic pressure test bench according to claim 1, characterized in that, The piston engine dynamic pressure test bench also includes a weighing module (11); The platform (1) also has a base plate (19) located below the top plate (18), and the weighing module (11) is disposed on the base plate (19). The weighing module (11) is used to weigh the oil storage device.

6. The piston engine dynamic pressure test bench according to claim 5, characterized in that, The piston engine dynamic pressure test bench also includes a second indicator (10); The second indicator (10) is connected to the weighing module (11) by signal. The second indicator (10) is installed on the top plate (18) and is used to display the weighing data detected by the weighing module (11).

7. A dynamic pressure test bench for a piston engine according to claim 5, characterized in that, The piston engine dynamic pressure test stand also includes a chassis (13) and a support frame (17); The bottom of the support frame (17) is connected to the chassis (13), the top of the support frame (17) is connected to the top plate (18), the bottom plate (19) is connected to the support frame (17), and the bottom plate (19) is located between the top plate (18) and the chassis (13).

8. The piston engine dynamic pressure test bench according to claim 7, characterized in that, The chassis (13) is rotatably connected to a drive wheel (15) and a driven wheel (16); A drive component (14) is provided on the chassis (13), and the drive component (14) is connected to the drive wheel (15) in a transmission connection.

9. A dynamic pressure test bench for a piston engine according to claim 7, characterized in that, The bottom of the support frame (17) is provided with a leveling leg (12), and the bottom of the leveling leg (12) is connected to the chassis (13).

10. A dynamic pressure test bench for a piston engine according to claim 1, characterized in that, The slide rail (3) is configured as one or more, the multiple slide rails (3) are arranged in parallel and spaced apart, and the multiple slide rails (3) are arranged symmetrically along the axis of the substrate (2).

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