Engine thrust test bench

Abstract

The utility model discloses an engine thrust testboard, which belongs to the technical field of engine testing and comprises a bottom plate and a testing mechanism arranged on the bottom plate, a protruding table is welded on one side of the top wall of the bottom plate, a sliding groove is formed in the protruding table, two side grooves are formed in one side, back to the center of the bottom plate, of the sliding groove, and the side grooves are communicated with the protruding table. Two horizontal sliding rods with the same height are arranged in the sliding groove, the two ends of each sliding rod are welded to the inner wall of the sliding groove and the inner wall of the side groove correspondingly, the two sliding rods are slidably sleeved with a storage table, the storage table is used for installing an unmanned aerial vehicle engine, two springs are fixedly connected to one side wall of the storage table, and positioning blocks are connected to the two springs correspondingly. Pressure sensors are installed in the two side grooves, and a display screen and a controller are further installed on the outer wall of the protruding table. The engine thrust test bench can test the influence of wind in different directions on the thrust of the engine of the unmanned aerial vehicle, so that the test is more comprehensive, and the test result is more valuable.

Description

Technical Field

[0001] The utility model belongs to the technical field of engine testing, and in particular relates to an engine thrust testing platform. Background Art

[0002] When a drone is flying, the engine thrust of the drone is affected by factors such as wind speed and airflow, which will affect the power consumption, fuel consumption, and flight time. Therefore, it is necessary to test the engine thrust of the drone before it leaves the factory.

[0003] In the process of realizing the present utility model, the inventors found that there are at least the following problems in the technology: most of the test benches currently used to test the thrust of UAV engines can only blow wind from one specified direction (usually directly in front) to test the thrust of the UAV engine, but this testing method is obviously not comprehensive enough (because when the UAV is actually used, the external wind may blow from all directions).

[0004] To this end, we proposed an engine thrust test bench to solve the above problems. Utility Model Content

[0005] The main purpose of the utility model is to provide an engine thrust test bench, which can test the influence of winds in different directions on the thrust of UAV engines, so that the test is more comprehensive and the test results are more valuable, which can effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An engine thrust test bench comprises a bottom plate and a test mechanism located on the bottom plate, a protruding platform is welded on one side of the top wall of the bottom plate, a slide groove is formed on the protruding platform, wherein two side grooves are provided on the side of the slide groove facing away from the center of the bottom plate, two horizontal sliding bars of equal height are arranged in the slide groove, two ends of the sliding bars are respectively welded to the inner wall of the slide groove and the inner wall of the side groove, a storage platform is slidably sleeved on the two sliding bars, and the storage platform is used to install the UAV engine;

[0008] Two springs are fixedly connected to one side wall of the storage table, and positioning blocks are connected to the two springs respectively. Pressure sensors are installed in the two side grooves. A display screen and a controller are also installed on the outer wall of the protruding table, wherein the display screen and the two pressure sensors are coupled and connected to the controller. The pressure sensor can refer to the technical principle of the FSR402 model, and the controller can refer to the technical principle of the S7-200 model;

[0009] A fixed seat is welded on the other side of the top wall of the base plate. The testing mechanism includes a motor mounted on the fixed seat, an upper support shaft coaxially connected to the output shaft of the motor, a mounting plate welded on the upper support shaft, and a fan mounted on the mounting plate. The upper support shaft is rotatably connected to the fixed seat.

[0010] As a preferred embodiment, the two springs are respectively sleeved on the outsides of the two slide bars, and the two springs do not contact the slide bars, so that the slide bars and the springs do not interfere with each other.

[0011] As a preferred implementation scheme, the two positioning blocks are respectively slidably mounted on the two sliding rods, and the four side walls of the positioning blocks are in contact with the inner walls of the side grooves; when the UAV engine on the storage table generates thrust, it pushes the positioning blocks to move, and the positioning blocks enter the side grooves to generate pressure on the pressure sensor.

[0012] As a preferred implementation scheme, an inner groove is formed on one side wall of the fixing seat facing the protruding platform, and the motor is vertically installed in the inner groove; this makes the motor structure stable, and the motor needs power from external power facilities.

[0013] As a preferred implementation scheme, the wind direction of the fan is a wind direction that blows horizontally and directly to the chute; and the fan needs to be powered by an external power source.

[0014] As a preferred implementation scheme, a pulley is installed on the side of the bottom wall of the mounting plate facing away from the upper support shaft, and the pulley abuts against the top wall of the fixing seat; so that when the mounting plate is flipped, the pulley can be driven to roll on the fixing seat, thereby supporting the fan.

[0015] In summary, the technical effects and advantages of the utility model are as follows:

[0016] The engine thrust test bench operates the fan to directly blow the propeller of the UAV engine, so that the UAV engine drives the storage table to move, thereby making the positioning block contact with the pressure sensor. The pressure generated by the positioning block on the pressure sensor will be fed back to the display screen through the controller, so as to reversely infer the thrust size of the UAV engine. It can also drive the motor to drive the fan to turn, so as to test the influence of wind in different directions on the thrust of the UAV engine, making the test more comprehensive and the test results more valuable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a vertical cross-sectional view of the utility model;

[0019] Figure 3 It is a partial cross-sectional view of the protruding platform of the utility model.

[0020] In the figure: 1. bottom plate; 2. protruding platform; 3. slide groove; 4. slide rod; 5. storage table; 6. spring; 7. positioning block; 8. side groove; 9. pressure sensor; 10. display screen; 11. controller; 12. fixing seat; 13. inner groove; 14. motor; 15. upper support shaft; 16. mounting plate; 17. fan; 18. pulley. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-Figure 3 An engine thrust test bench comprises a bottom plate 1 and a test mechanism located on the bottom plate 1, a protruding platform 2 is welded on one side of the top wall of the bottom plate 1, a slide groove 3 is formed on the protruding platform 2, wherein two side grooves 8 are opened on the side of the slide groove 3 facing away from the center of the bottom plate 1, two horizontal and equal-height slide bars 4 are arranged in the slide groove 3, and the two ends of the slide bar 4 are respectively welded to the inner wall of the slide groove 3 and the inner wall of the side groove 8, and a storage platform 5 is slidably sleeved on the two slide bars 4, and the storage platform 5 is used to install the UAV engine;

[0023] Two springs 6 are fixedly connected to one side wall of the storage table 5. The two springs 6 are respectively sleeved on the outer sides of the two slide bars 4, and the two springs 6 do not contact the slide bars 4, so that the slide bars 4 and the springs 6 do not interfere with each other. Positioning blocks 7 are respectively connected to the two springs 6. Pressure sensors 9 are installed in the two side grooves 8. The two positioning blocks 7 are respectively slidably sleeved on the two slide bars 4. The four side walls of the positioning blocks 7 are in contact with the inner walls of the side grooves 8, so that when the UAV engine on the storage table 5 generates thrust, it will push the positioning blocks 7 to move, and the positioning blocks 7 enter the side grooves 8 to generate pressure on the pressure sensors 9. A display screen 10 and a controller 11 are also installed on the outer wall of the protruding table 2, wherein the display screen 10 and the two pressure sensors 9 are coupled and connected to the controller 11. The pressure sensor 9 can refer to the technical principle of the FSR402 model, and the controller 11 can refer to the technical principle of the S7-200 model;

[0024] A fixed seat 12 is welded on the other side of the top wall of the bottom plate 1. The test mechanism includes a motor 14 installed on the fixed seat 12, an upper support shaft 15 coaxially connected to the output shaft of the motor 14, a mounting plate 16 welded on the upper support shaft 15, and a fan 17 installed on the mounting plate 16. An inner groove 13 is formed on one side wall of the fixed seat 12 facing the protruding platform 2. The motor 14 is vertically mounted in the inner groove 13, so that the structure of the motor 14 is stable. At the same time, the motor 14 needs to be powered by external power facilities. The upper support shaft 15 is rotatably connected to the fixed seat 12. The wind direction of the fan 17 is the wind direction that blows horizontally directly to the slide groove 3, and the fan 17 needs to be powered by an external power supply. A pulley 18 is installed on the side of the bottom wall of the mounting plate 16 that is away from the upper support shaft 15, and the pulley 18 abuts against the top wall of the fixed seat 12, so that when the mounting plate 16 is flipped, it can drive the pulley 18 to roll on the fixed seat 12, so that the pulley 18 supports the fan 17.

[0025] The engine thrust test bench: during the test, the UAV engine to be tested is first installed on the storage table 5, and the fan 17 is driven to blow directly on the propeller of the UAV engine, so that the UAV engine generates thrust, and the UAV engine drives the storage table 5 to move away from the fan 17. The storage table 5 moves to generate pressure on the two springs 6, so that the two positioning blocks 7 accelerate into the side grooves 8 and contact the two pressure sensors 9, and generate pressure on the two pressure sensors 9. The two pressure sensors 9 transmit electrical signals to the controller 11, so that the two controllers 11 transmit electrical signals to the display screen 10 to display the pressure values, so that personnel have an idea of ​​the thrust size of the UAV engine; then the motor 14 can be driven to drive the upper support shaft 15 and the mounting plate 16 to flip, and at the same time, the mounting plate 16 drives the pulley 18 to roll on the fixed seat 12 when flipping, so as to change the direction of the fan 17, so that the wind direction blowing the propeller of the UAV engine changes, thereby testing the influence of different wind directions on the thrust of the UAV engine.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An engine thrust test bench, comprising a base plate (1) and a test mechanism located on the base plate (1), characterized in that: A protruding platform (2) is welded to one side of the top wall of the bottom plate (1), and a slide groove (3) is formed on the protruding platform (2), wherein two side grooves (8) are provided on the side of the slide groove (3) facing away from the center of the bottom plate (1), and two horizontal and equal-height slide bars (4) are provided in the slide groove (3), and the two ends of the slide bars (4) are respectively welded to the inner wall of the slide groove (3) and the inner wall of the side groove (8), and a storage platform (5) is slidably sleeved on the two slide bars (4); Two springs (6) are fixedly connected to one side wall of the storage platform (5), and positioning blocks (7) are respectively connected to the two springs (6). Pressure sensors (9) are installed in the two side grooves (8). A display screen (10) and a controller (11) are also installed on the outer wall of the protruding platform (2), wherein the display screen (10) and the two pressure sensors (9) are coupled to the controller (11); A fixing seat (12) is welded to the other side of the top wall of the bottom plate (1), and the testing mechanism comprises a motor (14) mounted on the fixing seat (12), an upper support shaft (15) coaxially connected to the output shaft of the motor (14), a mounting plate (16) welded to the upper support shaft (15), and a fan (17) mounted on the mounting plate (16).

2. An engine thrust test bench according to claim 1, characterized in that: The two springs (6) are respectively sleeved on the outsides of the two slide bars (4), and the two springs (6) are not in contact with the slide bars (4).

3. The engine thrust test bench according to claim 1, characterized in that: The two positioning blocks (7) are respectively slidably mounted on the two sliding rods (4), and the four side walls of the positioning blocks (7) are all in contact with the inner wall of the side groove (8).

4. The engine thrust test bench according to claim 1, characterized in that: An inner groove (13) is formed on a side wall of the fixing seat (12) facing the protruding platform (2), and the motor (14) is vertically installed in the inner groove (13).

5. The engine thrust test bench according to claim 1, characterized in that: The wind direction of the fan (17) is a wind direction that blows horizontally and directly toward the chute (3).

6. The engine thrust test bench according to claim 1, characterized in that: A pulley (18) is installed on the side of the bottom wall of the mounting plate (16) facing away from the upper support shaft (15), and the pulley (18) abuts against the top wall of the fixing seat (12).

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