Aero-engine collision friction test platform

Abstract

The invention belongs to the technical field of aero-engine foreign object impact tests, and discloses an aero-engine impact friction test platform which comprises a base, an engine body is arranged on one side of the top end of the base, a fixing frame is arranged at the bottom end of the engine body, and hydraulic lifting rods are symmetrically and fixedly connected to the four corners of the bottom end of the fixing frame. A fixing seat is fixedly connected to the other side of the top end of the base, a shell is fixedly connected to the top end of the fixing seat, and a launching cartridge case is arranged at the top end of the shell; a lifting adjusting assembly is arranged at the bottom end of the launching cartridge case and comprises a lifting mechanism, a protruding block, a lifting plate, a lifting block, a linkage mechanism, a winding and unwinding mechanism and a mounting plate. Through cooperation of a lifting mechanism, a convex block, a lifting plate, a lifting block, a fixing block, a linkage mechanism, a winding and unwinding mechanism and a plurality of connecting structures, a mounting plate can drive a launching cartridge case to adjust the launching angle, so that the device is flexibly adjusted according to actual conditions, and the device is more convenient to use.

Description

Technical Field

[0001] The present application relates to the technical field of foreign object impact testing of aircraft engines, and more specifically, to an aircraft engine collision and friction testing platform. Background Art

[0002] In order to verify the ability of aircraft engines to resist bird strikes and hail impacts, an aircraft engine foreign object impact test is designed. In the aircraft engine foreign object impact test, a bird or hail is loaded into a cartridge case, which is accelerated and fired with a compressed air cannon, so that the cartridge case loaded with the bird or hail hits the separator, and the bird or hail in the cartridge case flies out by inertia, separates from the cartridge case, and hits the aircraft engine, thereby verifying the ability of aircraft engines to resist bird strikes or hail impacts.

[0003] Some existing engine collision simulation test platforms use a fixed launch shell structure, so the launched bird or hail line is fixed, and the engine can only be shot and collided from a fixed angle. This makes it impossible to accurately know the impact conditions of the engine from different angles, and the test effect is relatively simple. In addition, it is impossible to detect the collision conditions of the same point from multiple angles, making it difficult to ensure the accuracy of the test results.

[0004] In order to solve the above problems, the present application provides an aircraft engine collision and friction test platform. Summary of the invention

[0005] The aircraft engine collision and friction test platform provided in this application adopts the following technical solution:

[0006] An aero engine collision and friction test platform comprises a base, an engine body is arranged on one side of the top of the base, a fixing frame is arranged at the bottom of the engine body, hydraulic lifting rods are symmetrically fixedly connected at the four corners of the bottom of the fixing frame, a fixing seat is fixedly connected at the other side of the top of the base, a shell is fixedly connected at the top of the fixing seat, and a launching shell is arranged at the top of the shell;

[0007] A lifting and adjusting assembly is provided at the bottom end of the launching cartridge case, and the lifting and adjusting assembly includes a lifting mechanism, a protrusion, a lifting plate, a lifting block, a linkage mechanism, a winding and unwinding mechanism and a mounting plate. The lifting mechanism is arranged inside a fixing seat, the protrusion is arranged on the top of the fixing seat, the bottom end of the lifting plate is fixedly connected to the top of the protrusion, the lifting block is slidably connected inside the shell, the linkage mechanism is arranged on one side of the lifting plate, the winding and unwinding mechanism is arranged on the top of the linkage mechanism, and the top of the mounting plate is fixedly installed on the bottom end of the launching cartridge case.

[0008] Furthermore, the lifting mechanism includes a moving block, a bidirectional threaded rod, an ear seat and a rotating rod. The bidirectional threaded rod is rotatably connected to the bottom of the fixed seat. A threaded hole matching the bidirectional threaded rod is opened inside the moving block. The moving block is symmetrically sleeved on both ends of the bidirectional threaded rod. The bottom end of the moving block is slidably connected to the bottom inner wall of the fixed seat.

[0009] Through the above technical solution, when the bidirectional threaded rod rotates, the moving blocks on both sides can be driven to shrink inwards or spread outwards.

[0010] Furthermore, the two rotating rods are respectively rotatably connected to the top end of the bidirectional threaded rod, the two rotating rods are internally rotatably connected with a second connecting shaft, a first connecting shaft is provided at the bottom of the rotating rod, both ends of the two first connecting shafts are respectively rotatably connected to the opposite side of a plurality of ear seats, the bottom ends of the plurality of ear seats are symmetrically fixedly connected to the top end of the moving block, one end of the bidirectional threaded rod extends to one side of the fixed seat, and a driving power supply is provided.

[0011] Through the above technical solution, when the moving block moves, the bottom of the rotating rod can be driven to rotate through the ear seat and the first connecting shaft.

[0012] Furthermore, the top of the rotating rod is slidably connected to the bottom end of the protrusion, the top of the lifting plate is fixedly connected to the limiting block, the top of the shell is fixedly connected to the baffle, the top of the lifting block is slidably connected to the inside of the baffle, and the top of the lifting block is fixedly connected to the top block.

[0013] Through the above technical solution, the two moving blocks shrink and move inward, thereby driving the two rotating rods to rotate, and then when the top of the rotating rod shrinks inward, the bottom of the protrusion can be lifted, thereby driving the protrusion to rise.

[0014] Furthermore, the linkage mechanism includes a first rack, a first gear, and a second gear. One side of the first rack is fixedly connected to one side of the lifting plate, the outer wall of the first gear is meshed with the other side of the lifting plate, and the interior of the first gear is fixedly sleeved with a first connecting rod, and both ends of the first connecting rod are respectively rotatably connected to the inner wall of the shell.

[0015] Through the above technical solution, when the lifting plate rises, it can drive the first rack to rise synchronously, and then mesh with the first gear on one side, thereby driving the first gear on one side to rotate.

[0016] Furthermore, the outer wall of the first gear meshes with the outer wall of the second gear, a second connecting rod is fixedly sleeved inside the second gear, and both ends of the second connecting rod are rotatably connected to the inner wall of the shell.

[0017] Through the above technical solution, the first rack and the second gear are connected through the first gear transmission, and the first rack can drive the second gear to rotate during the lifting process.

[0018] Furthermore, the winding and unwinding mechanism includes a second rack, a third gear, a winding wheel and a lifting rope, one side of the second rack is slidably connected to the inner side of the shell, and the other side of the second rack is meshed with the outer wall of the third gear.

[0019] Through the above technical solution, the first gear and the second rack are connected through the second gear transmission. When the first gear rotates, the second rack on one side can be driven to rise and fall.

[0020] Furthermore, a third connecting rod is fixedly sleeved inside the third gear, and both ends of the third connecting rod are rotationally connected to the inner wall of the shell respectively. The winding wheel is sleeved on the outside of the third connecting rod and arranged on the front side of the third gear, and one end of the lifting rope is sleeved on the outside of the winding wheel.

[0021] Through the above technical solution, when the second rack is raised or lowered, the third connecting rod is driven to rotate by the third gear, and then the lifting rope is reeled in by the reel-in wheel.

[0022] Furthermore, a bracket is fixedly connected to the top of the top block, a rotating shaft is rotatably connected inside the bracket, a fixed pulley is sleeved on the outside of the rotating shaft, and an outer wall of the fixed pulley is slidably connected to the bottom end of the lifting rope.

[0023] Through the above technical solution, the fixed pulley is installed on one side of the top end of the top block through the bracket and the rotating shaft, and then the fixed pulley is used to change the pulling direction of the lifting rope.

[0024] Furthermore, an axle block is provided on one side of the top block, an outer wall of the axle block is fixedly connected to one end of the mounting plate, a connecting ring is provided on the top of the mounting plate, and one end of the lifting rope is sleeved on the outside of the connecting ring.

[0025] Through the above technical solution, when the lifting rope is being wound up, the mounting plate is pulled through the connecting ring, thereby driving the mounting plate to rotate.

[0026] In summary, this application includes the following beneficial technical effects:

[0027] 1. The invention designs a lifting and adjusting component, and utilizes the cooperation between multiple connecting structures including a lifting mechanism, a protrusion, a lifting plate, a lifting block, a fixing block, a linkage mechanism, and a winding mechanism, so that the mounting plate can drive the firing shell to adjust the firing angle. In this way, when using the device, the device can be flexibly adjusted according to actual usage conditions, making the device more convenient to use.

[0028] 2. The invention can connect the lifting mechanism and the winding mechanism in series through a group of linkage mechanisms, and then complete multiple adjustment controls through a group of lifting mechanisms, making the adjustment of the entire device more convenient and quick.

[0029] 3. This invention, through the cooperation between the lifting and adjusting assembly and the hydraulic lifting rod on one side, can adjust the height of the firing shell and the engine body, so as to adapt to shooting and colliding at the same point of the engine body at various angles, enrich the test diversity, and ensure the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall structure of this application;

[0031] Figure 2 This is a first cross-sectional structural schematic diagram of the present application;

[0032] Figure 3 This is a second cross-sectional structural schematic diagram of the present application;

[0033] Figure 4 For this application Figure 3 A schematic diagram of the structure enlargement in the middle;

[0034] Figure 5 For this application Figure 3 A magnified schematic diagram of the structure at B in the middle;

[0035] Figure 6 For this application Figure 3 Enlarged schematic diagram of the structure at point C in the middle.

[0036] Description of the numbers in the figure:

[0037] 1. Base; 2. Hydraulic lifting rod; 3. Fixed frame; 4. Engine body; 5. Driving power supply; 6. Fixed seat; 7. Shell; 8. Launch shell; 9. Mounting plate; 10. Top block; 11. Moving block; 1101. Bidirectional threaded rod; 1102. Ear seat; 1103. First connecting shaft; 1104. Rotating rod; 1105. Second connecting shaft; 12. Bump; 13. Lifting plate; 14. First rack; 1401. First gear; 1402. First connecting rod; 1403. Second gear; 1404. Second connecting rod; 15. Lifting block; 16. Baffle; 17. Second rack; 1701. Third gear; 1702. Third connecting rod; 1703. Winding wheel; 1704. Lifting rope; 18. Bracket; 19. Rotating shaft; 20. Fixed pulley; 21. Shaft block; 22. Connecting ring; 23. Limit block. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0039] In the description of the present application, 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 application 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 application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0040] In the description of this application, 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 this application can be understood according to specific circumstances.

[0041] Example:

[0042] The present application discloses an aircraft engine collision and friction test platform. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , comprising a base 1, an engine body 4 is arranged on one side of the top of the base 1, a fixing frame 3 is arranged at the bottom of the engine body 4, a hydraulic lifting rod 2 is symmetrically fixedly connected at the four corners of the bottom of the fixing frame 3, a fixing seat 6 is fixedly connected to the other side of the top of the base 1, a shell 7 is fixedly connected to the top of the fixing seat 6, and a launch shell 8 is arranged at the top of the shell 7;

[0043] A lifting and adjusting assembly is provided at the bottom end of the launching cartridge case 8, and the lifting and adjusting assembly includes a lifting mechanism, a protrusion 12, a lifting plate 13, a lifting block 15, a linkage mechanism, a winding and unwinding mechanism and a mounting plate 9. The lifting mechanism is arranged inside the fixing seat 6, the protrusion 12 is arranged on the top of the fixing seat 6, the bottom end of the lifting plate 13 is fixedly connected to the top of the protrusion 12, the lifting block 15 is slidably connected inside the shell 7, the linkage mechanism is arranged on one side of the lifting plate 13, the winding and unwinding mechanism is arranged on the top of the linkage mechanism, and the top of the mounting plate 9 is fixedly installed on the bottom end of the launching cartridge case 8.

[0044] See also Figure 2 and Figure 3 The lifting mechanism includes a moving block 11, a bidirectional threaded rod 1101, an ear seat 1102 and a rotating rod 1104. The bidirectional threaded rod 1101 is rotatably connected to the bottom of the fixed seat 6. A threaded hole matching the bidirectional threaded rod 1101 is opened inside the moving block 11. The moving block 11 is symmetrically sleeved on both ends of the bidirectional threaded rod 1101, and the bottom end of the moving block 11 is slidably connected to the bottom inner wall of the fixed seat 6.

[0045] The two rotating rods 1104 are cross-distributed and then connected by the second connecting shaft 1105. Then, under the action of the second connecting shaft 1105, the two rotating rods 1104 can rotate crosswise. When the bidirectional threaded rod 1101 rotates, it can drive the moving blocks 11 on both sides to shrink inward or spread outward.

[0046] See also Figure 2 and Figure 3 The two rotating rods 1104 are respectively rotatably connected to the top of the bidirectional threaded rod 1101, and the second connecting shaft 1105 is rotatably connected inside the two rotating rods 1104. The first connecting shaft 1103 is provided at the bottom of the rotating rod 1104. The two ends of the two first connecting shafts 1103 are respectively rotatably connected to the opposite side of the multiple ear seats 1102, and the bottom ends of the multiple ear seats 1102 are symmetrically fixedly connected to the top of the moving block 11. One end of the bidirectional threaded rod 1101 extends to one side of the fixed seat 6, and is provided with a driving power supply 5.

[0047] The output end of the driving power supply 5 is connected to the bidirectional threaded rod 1101. After starting the driving power supply 5, the bidirectional threaded rod 1101 can be driven to rotate. When the moving block 11 moves, the bottom of the rotating rod 1104 can be driven to rotate through the ear seat 1102 and the first connecting shaft 1103.

[0048] See also Figure 2 and Figure 3The top of the rotating rod 1104 is slidably connected to the bottom end of the protrusion 12, the top of the lifting plate 13 is fixedly connected to the limiting block 23, the top of the shell 7 is fixedly connected to the baffle 16, the top of the lifting block 15 is slidably inserted and connected to the inside of the baffle 16, and the top of the lifting block 15 is fixedly connected to the top block 10.

[0049] The protrusion 12 is slidably connected to the top of the fixed seat 6, and the two moving blocks 11 retract and move inward, thereby driving the two rotating rods 1104 to rotate. Then, when the top of the rotating rod 1104 retracts inward, the bottom of the protrusion 12 can be lifted, thereby driving the protrusion 12 to rise.

[0050] See also Figure 3 and Figure 4 The linkage mechanism includes a first rack 14, a first gear 1401, and a second gear 1403. One side of the first rack 14 is fixedly connected to one side of the lifting plate 13, and the outer wall of the first gear 1401 is meshed with the other side of the lifting plate 13. The interior of the first gear 1401 is fixedly sleeved with a first connecting rod 1402, and both ends of the first connecting rod 1402 are rotatably connected to the inner wall of the shell 7 respectively.

[0051] One side of the lifting plate 13 is slidably connected to the inner wall of one side of the shell 7. When the lifting plate 13 is raised, it can drive the first rack 14 to rise synchronously, and then mesh with the first gear 1401 on one side, thereby driving the first gear 1401 on one side to rotate.

[0052] See also Figure 3 and Figure 4 The outer wall of the first gear 1401 is meshed with the outer wall of the second gear 1403 , and a second connecting rod 1404 is fixedly sleeved inside the second gear 1403 , and both ends of the second connecting rod 1404 are rotatably connected to the inner wall of the shell 7 respectively.

[0053] Circular holes matching the first connecting rod 1402 and the second connecting rod 1404 are respectively provided inside the first gear 1401 and the second gear 1403. The first rack 14 and the second gear 1403 are connected by the first gear 1401. The first rack 14 can drive the second gear 1403 to rotate during the lifting process.

[0054] See also Figure 3 , Figure 4 and Figure 5 The winding and unwinding mechanism includes a second rack 17, a third gear 1701, a winding wheel 1703 and a lifting rope 1704. One side of the second rack 17 is slidably connected to the inner side of the shell 7, and the other side of the second rack 17 is meshed with the outer wall of the third gear 1701.

[0055] The first gear 1401 is connected to the second rack 17 via the second gear 1403 . When the first gear 1401 rotates, it can drive the second rack 17 on one side to rise and fall. When the second rack 17 rises, it will mesh with the third gear 1701 .

[0056] See also Figure 3 and Figure 5 The third gear 1701 is internally fixedly sleeved with a third connecting rod 1702, and both ends of the third connecting rod 1702 are rotationally connected to the inner wall of the shell 7 respectively. The winding wheel 1703 is sleeved on the outside of the third connecting rod 1702 and is arranged on the front side of the third gear 1701, and one end of the lifting rope 1704 is sleeved on the outside of the winding wheel 1703.

[0057] One end of the third connecting rod 1702 is fixedly sleeved inside the winding wheel 1703. When the second rack 17 is raised or lowered, the third connecting rod 1702 is driven to rotate through the third gear 1701, and then the lifting rope 1704 is wound or loosened through the winding wheel 1703.

[0058] See also Figure 3 and Figure 6 The top of the top block 10 is fixedly connected to a bracket 18, the inside of the bracket 18 is rotatably connected to a rotating shaft 19, the outside of the rotating shaft 19 is sleeved with a fixed pulley 20, and the outer wall of the fixed pulley 20 is slidably connected to the bottom end of the lifting rope 1704.

[0059] The fixed pulley 20 is installed on one side of the top end of the top block 10 through the bracket 18 and the rotating shaft 19, and then the fixed pulley 20 is used to change the pulling direction of the lifting rope 1704.

[0060] See also Figure 3 and Figure 6 A shaft block 21 is provided on one side of the top block 10, and the outer wall of the shaft block 21 is fixedly connected to one end of the mounting plate 9. A connecting ring 22 is provided on the top of the mounting plate 9, and one end of the lifting rope 1704 is sleeved on the outside of the connecting ring 22.

[0061] The outer wall of the shaft block 21 is rotatably connected to one side of the top block 10, and one side of the mounting plate 9 is rotatably connected to one side of the top block 10 through the shaft block 21. During the winding process, the lifting rope 1704 pulls the mounting plate 9 through the connecting ring 22, which can drive the mounting plate 9 to rotate.

[0062] The implementation principle of this embodiment is as follows: the driving power source 5 is started to drive the bidirectional threaded rod 1101 to rotate clockwise, and then the moving blocks 11 at both ends are retracted and moved inward, and then the rotating rod 1104 is driven to rotate through the ear seat 1102 and the first connecting shaft 1103, and the top of the rotating rod 1104 rotates and retracts, and then a clamping thrust is applied to the protrusion 12 to move the protrusion 12 upward;

[0063] When the protrusion 12 rises, it drives the first rack 14 on one side to rise through the lifting plate 13, and then meshes with the first gear 1401, and drives the first gear 1401 to rotate counterclockwise, and then drives the second gear 1403 to drive the second rack 17 to slide up, and then meshes with the third gear 1701, and relaxes the lifting rope 1704 through the winding wheel 1703;

[0064] Then, the pulling direction of the lifting rope 1704 is changed by the fixed pulley 20, and under the action of the shaft block 21, one end of the mounting plate 9 drives the firing shell 8 to rotate and descend.

[0065] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An aircraft engine collision and friction test platform, comprising a base (1), characterized in that: An engine body (4) is arranged on one side of the top of the base (1), a fixing frame (3) is arranged on the bottom of the engine body (4), hydraulic lifting rods (2) are symmetrically fixedly connected at the four corners of the bottom of the fixing frame (3), a fixing seat (6) is fixedly connected on the other side of the top of the base (1), a shell (7) is fixedly connected to the top of the fixing seat (6), and a launching shell (8) is arranged on the top of the shell (7); The bottom end of the launch cartridge case (8) is provided with a lifting and adjusting assembly, and the lifting and adjusting assembly comprises a lifting mechanism, a protrusion (12), a lifting plate (13), a lifting block (15), a linkage mechanism, a winding and unwinding mechanism and a mounting plate (9). The lifting mechanism is arranged inside the fixing seat (6), the protrusion (12) is arranged on the top of the fixing seat (6), the bottom end of the lifting plate (13) is fixedly connected to the top of the protrusion (12), the lifting block (15) is slidably connected inside the shell (7), the linkage mechanism is arranged on one side of the lifting plate (13), the winding and unwinding mechanism is arranged on the top of the linkage mechanism, and the top of the mounting plate (9) is fixedly installed on the bottom end of the launch cartridge case (8).

2. The aircraft engine collision and friction test platform according to claim 1, characterized in that: The lifting mechanism comprises a moving block (11), a bidirectional threaded rod (1101), an ear seat (1102) and a rotating rod (1104); the bidirectional threaded rod (1101) is rotatably connected to the bottom of the fixed seat (6); a threaded hole matching the bidirectional threaded rod (1101) is provided inside the moving block (11); the moving block (11) is symmetrically sleeved on both ends of the bidirectional threaded rod (1101); and the bottom end of the moving block (11) is slidably connected to the bottom inner wall of the fixed seat (6).

3. The aircraft engine collision and friction test platform according to claim 2, characterized in that: The two rotating rods (1104) are respectively rotatably connected to the top end of the bidirectional threaded rod (1101); the second connecting shaft (1105) is rotatably connected inside the two rotating rods (1104); a first connecting shaft (1103) is provided at the bottom of the rotating rod (1104); the two ends of the two first connecting shafts (1103) are respectively rotatably connected to the opposite side of a plurality of ear seats (1102); the bottom ends of the plurality of ear seats (1102) are symmetrically fixedly connected to the top end of the moving block (11); one end of the bidirectional threaded rod (1101) extends to one side of the fixed seat (6) and is provided with a driving power source (5).

4. The aircraft engine collision and friction test platform according to claim 2, characterized in that: The top of the rotating rod (1104) is slidably connected to the bottom of the protrusion (12), the top of the lifting plate (13) is fixedly connected to the limiting block (23), the top of the shell (7) is fixedly connected to the baffle (16), the top of the lifting block (15) is slidably connected to the inside of the baffle (16), and the top of the lifting block (15) is fixedly connected to the top block (10).

5. The aircraft engine collision and friction test platform according to claim 1, characterized in that: The linkage mechanism comprises a first rack (14), a first gear (1401), and a second gear (1403); one side of the first rack (14) is fixedly connected to one side of the lifting plate (13); the outer wall of the first gear (1401) is meshed with the other side of the lifting plate (13); a first connecting rod (1402) is fixedly sleeved inside the first gear (1401); and both ends of the first connecting rod (1402) are rotatably connected to the inner wall of the shell (7).

6. The aircraft engine collision and friction test platform according to claim 5, characterized in that: The outer wall of the first gear (1401) is meshed with the outer wall of the second gear (1403); a second connecting rod (1404) is fixedly sleeved inside the second gear (1403); and both ends of the second connecting rod (1404) are rotatably connected to the inner wall of the housing (7) respectively.

7. The aircraft engine collision and friction test platform according to claim 5, characterized in that: The winding and unwinding mechanism comprises a second rack (17), a third gear (1701), a winding wheel (1703) and a lifting rope (1704), one side of the second rack (17) being slidably connected to the inner side of the shell (7), and the other side of the second rack (17) being meshed with the outer wall of the third gear (1701).

8. The aircraft engine collision and friction test platform according to claim 7, characterized in that: The third gear (1701) is internally fixedly sleeved with a third connecting rod (1702), and both ends of the third connecting rod (1702) are rotationally connected to the inner wall of the shell (7), and the winding wheel (1703) is sleeved on the outside of the third connecting rod (1702) and arranged on the front side of the third gear (1701), and one end of the lifting rope (1704) is sleeved on the outside of the winding wheel (1703).

9. The aircraft engine collision and friction test platform according to claim 4, characterized in that: The top end of the top block (10) is fixedly connected to a bracket (18), the interior of the bracket (18) is rotatably connected to a rotating shaft (19), the exterior of the rotating shaft (19) is sleeved with a fixed pulley (20), and the outer wall of the fixed pulley (20) is slidably connected to the bottom end of the lifting rope (1704).

10. The aircraft engine collision and friction test platform according to claim 9, characterized in that: An axle block (21) is provided on one side of the top block (10), and the outer wall of the axle block (21) is fixedly connected to one end of the mounting plate (9). A connecting ring (22) is provided at the top end of the mounting plate (9), and one end of the lifting rope (1704) is sleeved on the outside of the connecting ring (22).

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