Aero-engine test bed

Abstract

The utility model discloses an aero-engine test run rack, which belongs to the technical field of aero-engine test run and comprises a bottom plate, a moving mechanism is arranged at the top of the bottom plate, a movable support is arranged on the moving mechanism, and a fixed support is fixedly connected to the top surface of the bottom plate. According to the engine supporting device, the distance between the two bearing plates can be adjusted through threaded fit between the first screw rod and the moving block, so that engines with different lengths are supported, and the two-way screw rod is driven to rotate through the fourth motor; two corresponding limiting side plates can be driven to get close to each other or get away from each other through cooperation between a two-way lead screw and a sliding block, so that aero-engines with different outer diameters are clamped and fixed, vibration generated when the engines run is detected through a first pressure sensor and a first rubber block on a U-shaped frame, and practicability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of aviation engine test running, and more specifically to an aviation engine test running bench. Background Art

[0002] An aircraft engine is a highly complex and sophisticated thermal machine. In order to ensure the normal operation of the aircraft engine and the stable flight of the aircraft, it is necessary to test the engine's characteristics during the testing phase. Currently, aircraft engines are usually placed on a test bench for testing.

[0003] After searching, the utility model patent with the announcement number CN217687868U discloses an aircraft engine test bench, including a bottom plate and a test block movably arranged on the top of the bottom plate, the top of the bottom plate is movably provided with a first movable plate and a second movable plate, the top of the first movable plate is fixedly provided with a symmetrical first support block, the top of the first support block is fixedly provided with a first bearing plate, the top of the first bearing plate is fixedly provided with a symmetrical first limit block, the test block is an arch-shaped structure, the test block is movably arranged on the top of the first limit block, and a fixed block is fixedly provided on one side of the first bearing plate; the device is provided with a pressure test structure, which can quickly test the pressure generated by the vibration of the aircraft engine on the test body when it is working on the test bench, and can conveniently and quickly adjust and fix the position of the pressure test structure, so as to facilitate the rapid test of the vibration pressure of the outer wall of the aircraft engine when it is running on the test bench.

[0004] However, the above patent still has the following shortcomings: the position of the first limit block is fixed, which is not convenient to ensure that it can contact the outer wall of the engine, and the movement of the second movable block is relatively limited, and it can only be fixed horizontally at the position corresponding to the third screw groove and the fourth screw groove, and can only be fixed vertically at the position corresponding to the first screw groove and the second screw groove. For this reason, we propose an aircraft engine test bench. Utility Model Content

[0005] In view of the problems existing in the prior art, the utility model aims to provide an aero-engine test bench.

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

[0007] An aircraft engine test bench comprises a base plate, a moving mechanism is arranged on the top of the base plate, a moving bracket is arranged on the moving mechanism, a fixed bracket is fixedly connected to the top surface of the base plate, the tops of the fixed bracket and the moving bracket are respectively fixedly connected to a bearing plate, a plurality of slide grooves are opened on the top surface of the bearing plate, a plurality of inner cavities of the slide grooves are respectively rotatably connected with bidirectional screw rods, a group of sliders are respectively threadedly sleeved on the outer sides of both ends of the plurality of bidirectional screw rods, the top ends of the two groups of sliders are respectively fixedly connected to limited side plates, a first testing mechanism is arranged on one of the limited side plates, a plurality of second testing mechanisms are arranged on the front part of the bearing plate, a plurality of fourth motors are fixedly installed on the back side of the bearing plate, and the output shafts of the plurality of fourth motors are respectively connected to the ends of the plurality of bidirectional screw rods.

[0008] As a preferred solution of the utility model, the second testing mechanism includes a support seat fixedly connected to the front part of the bearing plate, a longitudinal tube frame fixedly sleeved on the support seat, a second motor fixedly installed on the bottom surface of the longitudinal tube frame, an output shaft of the second motor extends to the inner cavity of the longitudinal tube frame and is fixedly connected to a second screw, an outer thread of the second screw is sleeved with a longitudinal column, a top of the longitudinal column extends to the top of the longitudinal tube frame and is fixedly connected to a transverse tube frame, a third motor is fixedly installed on the end surface of the transverse tube frame, an output shaft of the third motor extends to the inner cavity of the transverse tube frame and is fixedly connected to a third screw, a transverse column is sleeved with a transverse column on the outer thread of the third screw, one end of the transverse column extends to the outside of the transverse tube frame and is provided with a second mounting groove, a second pressure sensor is fixedly installed in the inner cavity of the second mounting groove, and a second rubber block is fixedly connected to the detection end of the second pressure sensor.

[0009] As a preferred solution of the utility model, the first testing mechanism includes a U-shaped frame sleeved on the limiting side plate, the inner wall of the U-shaped frame is fixedly sleeved with a magnet block, the outer side of the U-shaped frame is provided with a first mounting groove, the inner wall of the first mounting groove is fixedly installed with a first pressure sensor, and the detection end of the first pressure sensor is fixedly connected to a first rubber block.

[0010] As a preferred solution of the utility model, the moving mechanism includes a moving groove opened on the top surface of the base plate and a first motor fixedly installed on the end surface of the base plate, the inner cavity of the moving groove is rotatably connected with a first screw, the output shaft of the first motor is connected to the end of the first screw, the outer thread of the first screw is sleeved with a moving block, the top surface of the moving block is connected to the bottom surface of the moving bracket, the side surface of the moving block is in contact with the inner wall of the moving groove, and the top surface of the moving bracket is in contact with the top surface of the base plate.

[0011] As a preferred solution of the utility model, the side surface of the longitudinal column is in contact with the inner wall of the longitudinal square tube rack, and the inner wall of the transverse square tube rack is in contact with the side surface of the transverse column.

[0012] As a preferred solution of the utility model, the side surface of the sliding block is in contact with the inner wall of the sliding groove.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] (1) In the utility model, the distance between the two bearing plates can be adjusted by the threaded cooperation between the first screw rod and the moving block, so as to support engines of different lengths. The bidirectional screw rod is driven to rotate by the fourth motor, and the cooperation between the bidirectional screw rod and the slider can drive the two corresponding limit side plates to move closer to or away from each other, so as to clamp and fix aircraft engines of different outer diameters, and facilitate the detection of vibrations generated when the engine is running by the first pressure sensor and the first rubber block on the U-shaped frame.

[0015] (2) In the utility model, the second motor is used to drive the second screw to rotate, and the threaded cooperation between the second screw and the longitudinal column is used to drive the transverse tube frame and the second pressure sensor to move up and down, and the third motor is used to drive the third screw to rotate, and the cooperation between the third screw and the transverse column is used to drive the transverse column to expand and contract on the transverse tube frame, so that the end of the second rubber block contacts the side of the engine, thereby realizing precise adjustment of the position of the second pressure sensor and the second rubber block, and having good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the load-bearing plate of the utility model;

[0018] Figure 3 It is a cross-sectional schematic diagram of the longitudinal square pipe rack of the utility model;

[0019] Figure 4 It is a cross-sectional schematic diagram of the first testing mechanism of the utility model.

[0020] Description of the numbers in the figure:

[0021] 1. Bottom plate; 2. Moving mechanism; 3. Moving bracket; 4. Fixed bracket; 5. Load-bearing plate; 6. Slide groove; 7. Bidirectional screw rod; 8. Sliding block; 9. Limiting side plate; 10. Fourth motor; 11. First testing mechanism; 12. Second testing mechanism; 13. Support seat; 14. Longitudinal square tube rack; 15. Second motor; 16. Second screw rod; 17. Longitudinal column; 18. Horizontal square tube rack; 19. Third motor; 20. Third screw rod; 21. Horizontal column; 22. Second mounting groove; 23. Second pressure sensor; 24. Second rubber block; 25. U-shaped frame; 26. Magnet block; 27. First mounting groove; 28. First pressure sensor; 29. ​​First rubber block; 30. Moving groove; 31. First motor; 32. First screw rod; 33. Moving block. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] Example:

[0026] See also Figure 1-4A kind of aircraft engine test bench comprises a base plate 1, a moving mechanism 2 is arranged on the top of the base plate 1, a moving bracket 3 is arranged on the moving mechanism 2, a fixed bracket 4 is fixedly connected to the top surface of the base plate 1, a bearing plate 5 is fixedly connected to the top of the fixed bracket 4 and the moving bracket 3, a plurality of slide grooves 6 are opened on the top surface of the bearing plate 5, a plurality of inner cavities of the plurality of slide grooves 6 are rotatably connected with bidirectional screw rods 7, a group of sliders 8 are respectively threadedly sleeved on the outer sides of the two ends of the plurality of bidirectional screw rods 7, the top ends of the two groups of sliders 8 are respectively fixedly connected with limited side plates 9, a first testing mechanism 11 is arranged on one of the limited side plates 9, a plurality of second testing mechanisms 12 are arranged on the front of the bearing plate 5, a plurality of fourth motors 10 are fixedly installed on the back of the bearing plate 5, and the output shafts of the plurality of fourth motors 10 are respectively connected to the ends of the plurality of bidirectional screw rods 7.

[0027] In this embodiment, the bottom surface of the limiting side plate 9 is in contact with the top surface of the bearing plate 5 , thereby ensuring the stability of the limiting side plate 9 .

[0028] For details, please refer to Figure 1 and Figure 3 The second testing mechanism 12 includes a support seat 13 fixedly connected to the front part of the bearing plate 5, a longitudinal tube frame 14 is fixedly sleeved on the support seat 13, a second motor 15 is fixedly installed on the bottom surface of the longitudinal tube frame 14, an output shaft of the second motor 15 extends to the inner cavity of the longitudinal tube frame 14 and is fixedly connected to a second screw 16, a longitudinal column 17 is sleeved on the outer side of the second screw 16, a top end of the longitudinal column 17 extends to the top of the longitudinal tube frame 14 and is fixedly connected to a transverse tube frame 18, a third motor 19 is fixedly installed on the end surface of the transverse tube frame 18, an output shaft of the third motor 19 extends to the inner cavity of the transverse tube frame 18 and is fixedly connected to a third screw 20, a transverse column 21 is sleeved on the outer side of the third screw 20, one end of the transverse column 21 extends to the outside of the transverse tube frame 18 and is provided with a second mounting groove 22, a second pressure sensor 23 is fixedly installed in the inner cavity of the second mounting groove 22, and a second rubber block 24 is fixedly connected to the detection end of the second pressure sensor 23.

[0029] For details, please refer to Figure 1 and Figure 4 The first testing mechanism 11 includes a U-shaped frame 25 sleeved on the limiting side plate 9, a magnet block 26 is fixedly sleeved on the inner wall of the U-shaped frame 25, a first mounting groove 27 is opened on the outer side of the U-shaped frame 25, a first pressure sensor 28 is fixedly mounted on the inner wall of the first mounting groove 27, and a first rubber block 29 is fixedly connected to the detection end of the first pressure sensor 28.

[0030] In this embodiment, the U-shaped frame 25 is fixed by the magnetic attraction between the magnet block 26 and the limiting side plate 9 , and the side surface of the limiting side plate 9 is in contact with the inner wall of the U-shaped frame 25 .

[0031] For details, please refer to Figure 1 The moving mechanism 2 includes a moving groove 30 opened on the top surface of the base plate 1 and a first motor 31 fixedly installed on the end surface of the base plate 1. The inner cavity of the moving groove 30 is rotatably connected with a first screw 32. The output shaft of the first motor 31 is connected to the end of the first screw 32. The outer thread of the first screw 32 is sleeved with a moving block 33. The top surface of the moving block 33 is connected to the bottom surface of the moving bracket 3. The side surface of the moving block 33 is in contact with the inner wall of the moving groove 30. The top surface of the moving bracket 3 is in contact with the top surface of the base plate 1.

[0032] In this embodiment, the inner wall of the movable groove 30 is used to limit the movable block 33 so that the movable block 33 can only move along the axial direction of the first screw rod 32, and the top surface of the bottom plate 1 is used to support the movable bracket 3 to ensure the stability of the movable bracket 3.

[0033] For details, please refer to Figure 3 The side of the longitudinal column 17 is in contact with the inner wall of the longitudinal square tube frame 14 , and the inner wall of the transverse square tube frame 18 is in contact with the side of the transverse column 21 .

[0034] In this embodiment, the inner wall of the longitudinal square tube rack 14 is used to limit the longitudinal column 17, so that the longitudinal column 17 can only move along the axial direction of the second screw rod 16, and the inner wall of the transverse square tube rack 18 is used to limit the transverse column 21, so that the transverse column 21 can only move along the axial direction of the third screw rod 20.

[0035] For details, please refer to Figure 2 , the side surface of the slider 8 is in contact with the inner wall of the slide groove 6.

[0036] In this embodiment, the inner wall of the slide groove 6 is used to limit the slide block 8 so that the slide block 8 can only move along the axial direction of the bidirectional screw rod 7 .

[0037] Working principle: When in use, first start the first motor 31 to drive the first screw 32 to rotate, and use the threaded fit between the first screw 32 and the moving block 33 to drive the moving block 33 and the moving bracket 3 to move, so as to adjust the distance between the two bearing plates 5 on the top of the moving bracket 3 and the fixed bracket 4, so as to adapt to supporting aircraft engines of different lengths, and then place the aircraft engine on the two bearing plates 5, start multiple fourth motors 10 to drive multiple bidirectional screws 7 to rotate, and use the threaded fit between the bidirectional screw 7 and the slider 8 to drive the two corresponding limiting side plates 9 to approach each other, so that the inner side of the limiting side plate 9 is in contact with the outer side of the engine, thereby fixing the engine. Then, the second motor 15 is started to drive the second screw 16 to rotate, and the cooperation between the second screw 16 and the longitudinal column 17 is used to adjust the height of the transverse tube frame 18 and the second pressure sensor 23. In addition, the third motor 19 is started to drive the third screw 20 to rotate, and the cooperation between the third screw 20 and the transverse column 21 is used to drive the transverse column 21 to expand and contract on the transverse tube frame 18, so that the end of the second rubber block 24 contacts the side of the engine. Finally, the U-shaped frame 25 is put on the limiting side plate 9. When testing the engine, the first pressure sensor 28 on the U-shaped frame 25 and the second pressure sensor 23 on the transverse column 21 are used to detect the vibration of the engine during operation.

[0038] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the utility model according to the technical solution and improved ideas of the utility model, which should be included in the protection scope of the utility model.

Claims

1. An aircraft engine test bench, comprising a base plate (1), characterized in that: A moving mechanism (2) is arranged on the top of the base plate (1), a moving bracket (3) is arranged on the moving mechanism (2), a fixed bracket (4) is fixedly connected to the top surface of the base plate (1), the tops of the fixed bracket (4) and the moving bracket (3) are respectively fixedly connected to a bearing plate (5), a plurality of slide grooves (6) are arranged on the top surface of the bearing plate (5), the inner cavities of the plurality of slide grooves (6) are respectively rotatably connected to bidirectional screw rods (7), a group of sliders (8) are respectively threadedly sleeved on the outer sides of the two ends of the plurality of bidirectional screw rods (7), the top ends of the two groups of sliders (8) are respectively fixedly connected to a limiting side plate (9), a first testing mechanism (11) is arranged on one of the limiting side plates (9), a plurality of second testing mechanisms (12) are arranged on the front of the bearing plate (5), a plurality of fourth motors (10) are fixedly installed on the back of the bearing plate (5), the output shafts of the plurality of fourth motors (10) are respectively connected to the ends of the plurality of bidirectional screw rods (7).

2. The aircraft engine test bench according to claim 1, characterized in that: The second testing mechanism (12) comprises a support seat (13) fixedly connected to the front part of the bearing plate (5), a longitudinal square tube frame (14) being fixedly sleeved on the support seat (13), a second motor (15) being fixedly installed on the bottom surface of the longitudinal square tube frame (14), an output shaft of the second motor (15) extending to the inner cavity of the longitudinal square tube frame (14) and being fixedly connected to a second screw rod (16), a longitudinal column (17) being sleeved on the outer side of the second screw rod (16) through a thread, a top end of the longitudinal column (17) extending to the top of the longitudinal square tube frame (14) and being fixedly connected to a transverse square tube frame (18), A third motor (19) is fixedly mounted on the end surface of the transverse tube rack (18); an output shaft of the third motor (19) extends to the inner cavity of the transverse tube rack (18) and is fixedly connected to a third screw rod (20); a transverse column (21) is threadedly sleeved on the outer side of the third screw rod (20); one end of the transverse column (21) extends to the outside of the transverse tube rack (18) and is provided with a second mounting groove (22); a second pressure sensor (23) is fixedly mounted in the inner cavity of the second mounting groove (22); a second rubber block (24) is fixedly connected to the detection end of the second pressure sensor (23).

3. The aircraft engine test bench according to claim 1, characterized in that: The first testing mechanism (11) comprises a U-shaped frame (25) sleeved on the limiting side plate (9), a magnet block (26) being fixedly sleeved on the inner wall of the U-shaped frame (25), a first mounting groove (27) being provided on the outer side of the U-shaped frame (25), a first pressure sensor (28) being fixedly mounted on the inner wall of the first mounting groove (27), and a first rubber block (29) being fixedly connected to the detection end of the first pressure sensor (28).

4. The aircraft engine test bench according to claim 1, characterized in that: The moving mechanism (2) comprises a moving groove (30) provided on the top surface of the base plate (1) and a first motor (31) fixedly mounted on the end surface of the base plate (1); the inner cavity of the moving groove (30) is rotatably connected to a first screw rod (32); the output shaft of the first motor (31) is connected to the end of the first screw rod (32); a moving block (33) is threadedly sleeved on the outer side of the first screw rod (32); the top surface of the moving block (33) is connected to the bottom surface of the moving bracket (3); the side surface of the moving block (33) is in contact with the inner wall of the moving groove (30); and the top surface of the moving bracket (3) is in contact with the top surface of the base plate (1).

5. The aircraft engine test bench according to claim 2, characterized in that: The side surface of the longitudinal column (17) is in contact with the inner wall of the longitudinal square tube frame (14), and the inner wall of the transverse square tube frame (18) is in contact with the side surface of the transverse column (21).

6. The aircraft engine test bench according to claim 1, characterized in that: The side surface of the sliding block (8) is in contact with the inner wall of the sliding groove (6).

Images