Thrust test bench of turbojet engine
By introducing a combination of radial adjustment mechanism and slider in the turbojet engine thrust test bench, the problem that the existing turbojet engine thrust test bench is not able to adapt to engines of different diameters is solved, and higher adaptability and accurate thrust measurement are achieved.
Patent Information
- Application Number
- CN202422446086.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-10
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-10-10
AI Technical Summary
The existing turbojet engine thrust test benches cannot adapt to turbojet engines of different diameters, resulting in low versatility of the test bench.
A thrust test bench for turbojet engines is designed, adopting a bottom plate and a movable plate structure. A radial adjustment mechanism is provided on both sides of the movable plate. Through the combination of adjustment plate and slider, the thread connection of the engine clamp bolts is realized, supporting the installation of engines of different diameters, and thrust is measured through the thrust test assembly.
It improves the adaptability of the thrust test bench of the turbojet engine, can adapt to engines of different diameters, and achieves accurate thrust measurement and data recording.
Smart Images
Figure CN223179774U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of engine test devices, in particular to a thrust test bench for a turbojet engine. Background Art
[0002] By testing the thrust parameters of a turbojet engine, the performance of the engine under different conditions can be evaluated. At the same time, the thrust test of the turbojet engine also helps engineers understand the working state of the engine at different speeds, thereby providing a basis for the improvement and optimization of the engine. The existing engine thrust test bench includes a bottom plate and a movable plate, and a thrust sensor is arranged between the bottom plate and the movable plate. During the test, the turbojet engine is installed on the movable plate, and the thrust generated by the engine startup is measured by the thrust sensor.
[0003] When installing the turbojet engine, generally, the clamp outside the turbojet engine is connected to the movable plate by bolts, and the installation positions of the bolts are fixed, which cannot meet the test requirements for turbojet engines with different diameters, and the versatility of the test bench is low.
[0004] Therefore, a thrust test bench for a turbojet engine is proposed. Content of the Utility Model
[0005] The purpose of the utility model is to provide a thrust test bench for a turbojet engine, aiming to solve or improve at least one of the above technical problems.
[0006] To achieve the above purpose, the utility model provides the following solution: The utility model provides a thrust test bench for a turbojet engine, including:
[0007] A bottom plate, on the top of which a movable plate is slidably connected, and a thrust test component for measuring the thrust of the movable plate is arranged on the bottom plate;
[0008] A radial adjustment mechanism, on both sides of the movable plate, first grooves are respectively opened, the radial adjustment mechanism includes an adjustment plate slidably connected to the first grooves, the sliding direction of the adjustment plate is perpendicular to the sliding direction of the movable plate, and a first positioning component detachably connected to the adjustment plate is arranged on the movable plate;
[0009] Two sliders, the two sliders are respectively arranged on the two adjustment plates, and a plurality of first threaded grooves are opened on the sliders, and the first threaded grooves are used for threadedly connecting with the bolts on the engine clamp.
[0010] Preferably, the first positioning component includes a plurality of first bolts threadedly connected to the side walls of the first grooves, a plurality of first threaded holes are opened on the adjustment plate, and the first bolts penetrate through the side walls of the first grooves and are threadedly connected to the first threaded holes.
[0011] Preferably, one end of the adjusting plate extending out of the first groove is fixedly connected with a support plate. A connecting platform is fixedly connected to the top of the support plate. The top of the connecting platform is in sliding contact with the bottom of the slider. The sliding direction of the slider is perpendicular to the sliding direction of the movable plate. A second positioning component detachably connected to the slider is arranged on the connecting platform.
[0012] Preferably, the second positioning component includes a plurality of long strip through holes opened on the connecting platform. A plurality of second bolts are threadedly connected to the slider. The plurality of second bolts respectively penetrate through the plurality of long strip through holes and are threadedly connected with locking nuts. The connecting platform is pressed between the slider and the locking nuts.
[0013] Preferably, the thrust test component includes a thrust sensor fixedly connected to the bottom plate. The thrust sensor is in contact with the side wall of the movable plate. The thrust sensor is located between the two sliders.
[0014] Preferably, a second groove is opened on the top of the bottom plate. A slide rail is fixedly connected in the second groove. A slide table is slidably connected to the slide rail. The top of the slide table is fixedly connected to the center of the bottom of the movable plate. A gap is provided between the movable plate and the bottom plate.
[0015] Preferably, positioning holes are respectively opened at the four corners of the bottom plate.
[0016] The following technical effects are disclosed by the present utility model: Bolts are respectively connected to both sides of the engine clamp. The bolts on both sides are respectively threadedly connected to the first thread grooves on the two sliders, so as to realize the installation of the engine. Start the engine, and the thrust generated by the engine is transmitted to the movable plate and measured by the thrust test component. Among them, when installing the engine, the length of the adjusting plate extending out of the first groove can be changed and positioned through the first positioning component, so as to change the distance between the two sliders, thereby meeting the fixing requirements of different diameter turbojet engines and improving the adaptability of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The accompanying drawings constituting a part of this application are used to provide a further understanding of this application. The schematic embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation to this application. In the drawings:
[0018] Figure 1 is a schematic structural diagram of the present utility model;
[0019] Figure 2 is an exploded view of the bottom plate and the movable plate of the present utility model;
[0020] Figure 3 is an exploded view of the movable plate, the adjusting plate and the slider of the present utility model.
[0021] In the figure: 1, bottom plate; 2, movable plate; 3, first groove; 4, adjusting plate; 5, slider; 6, first threaded groove; 7, first bolt; 8, first threaded hole; 9, support plate; 10, connecting platform; 11, long strip through hole; 12, second bolt; 13, locking nut; 14, thrust sensor; 15, second groove; 16, slide rail; 17, slide table; 18, positioning hole. Detailed implementation mode
[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.
[0023] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation modes.
[0024] Referring to Figures 1 - 3 , the present invention provides a thrust test bench for a turbojet engine, including:
[0025] A bottom plate 1, a movable plate 2 is slidably connected to the top of the bottom plate 1, and a thrust test assembly for measuring the thrust of the movable plate 2 is arranged on the bottom plate 1;
[0026] A radial adjustment mechanism, first grooves 3 are respectively opened on the two opposite sides of the movable plate 2, the radial adjustment mechanism includes an adjusting plate 4 slidably connected to the first groove 3, the sliding direction of the adjusting plate 4 is perpendicular to the sliding direction of the movable plate 2, and a first positioning assembly detachably connected to the adjusting plate 4 is arranged on the movable plate 2;
[0027] Two sliders 5 are respectively arranged on the two adjusting plates 4, and a plurality of first threaded grooves 6 are opened on the sliders 5, and the first threaded grooves 6 are used for threaded connection with the bolts on the engine clamp;
[0028] Bolts are respectively connected to both sides of the engine clamp, and the bolts on both sides are respectively threadedly connected to the first threaded grooves 6 on the two sliders 5, so as to realize the installation of the engine. Start the engine, and the thrust generated by the engine is transmitted to the movable plate 2 and measured by the thrust test assembly; among them, when installing the engine, the length of the adjusting plate 4 extending out of the first groove 3 can be changed and positioned through the first positioning assembly, so as to change the distance between the two sliders 5, so as to meet the fixing requirements of turbojet engines with different diameters and improve the adaptability of the device;
[0029] In this embodiment, the overall size of the test stand is 200mmX200mmX130mm, which is convenient, small and compact, and is suitable for testing turbojet engines with a maximum diameter less than Ф170mm and a maximum thrust less than 55kg.
[0030] In a further optimized solution, the first positioning component includes a plurality of first bolts 7 threadedly connected to the side wall of the first groove 3. A plurality of first threaded holes 8 are formed in the adjusting plate 4. The first bolts 7 penetrate through the side wall of the first groove 3 and are threadedly connected to the first threaded holes 8.
[0031] By connecting the first bolts 7 to the first threaded holes 8 at different positions, the adjusting plate 4 extending different lengths out of the first groove 3 is fixed.
[0032] In a further optimized solution, one end of the adjusting plate 4 extending out of the first groove 3 is fixedly connected with a support plate 9. The top of the support plate 9 is fixedly connected with a connecting platform 10. The top of the connecting platform 10 is in sliding contact with the bottom of the slider 5. The sliding direction of the slider 5 is perpendicular to the sliding direction of the movable plate 2. A second positioning component detachably connected to the slider 5 is arranged on the connecting platform 10.
[0033] In a further optimized solution, the second positioning component includes a plurality of long strip through holes 11 formed in the connecting platform 10. A plurality of second bolts 12 are threadedly connected to the slider 5. The plurality of second bolts 12 respectively penetrate through the plurality of long strip through holes 11 and are threadedly connected with lock nuts 13. The connecting platform 10 is pressed between the slider 5 and the lock nuts 13.
[0034] By placing the slider 5 at different positions on the connecting platform 10, the second bolts 12 penetrate through the long strip through holes 11 and are locked and fixed by the lock nuts 13 to realize fine adjustment of the distance between the two sliders 5; by coarsely adjusting the position of the adjusting plate 4 and finely adjusting the position of the slider 5, the accuracy of the position adjustment of the two sliders 5 is improved.
[0035] In a further optimized solution, the thrust test component includes a thrust sensor 14 fixedly connected to the bottom plate 1. The thrust sensor 14 is in contact with the side wall of the movable plate 2. The thrust sensor 14 is located between the two sliders 5.
[0036] In a further optimized solution, a second groove 15 is formed in the top of the bottom plate 1. A slide rail 16 is fixedly connected in the second groove 15. A slide table 17 is slidably connected to the slide rail 16. The top of the slide table 17 is fixedly connected to the center of the bottom of the movable plate 2. There is a gap between the movable plate 2 and the bottom plate 1.
[0037] When the engine is started, the engine generates a backward thrust. The thrust is transmitted to the movable plate 2. The movable plate 2 drives the slide table 17 to slide on the slide rail 16, thereby squeezing the thrust sensor 14 backward. The thrust sensor 14 is connected to a computer through a specific interface such as DB9, so as to realize the display and recording of data.
[0038] For a further optimized solution, positioning holes 18 are respectively formed at the four corners of the bottom plate 1. Through the positioning holes 18, it can be fixed to the workbench or the ground using bolts or anchor screws according to the application scenario.
[0039] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.
[0040] The above-described embodiments are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.
Claims
1. A thrust test bench for a turbojet engine, characterized in that, Including: A bottom plate (1), on the top of the bottom plate (1) is slidably connected with a movable plate (2), and a thrust test assembly for measuring the thrust of the movable plate (2) is arranged on the bottom plate (1); A radial adjustment mechanism, on both sides of the movable plate (2) are respectively provided with first grooves (3), the radial adjustment mechanism includes an adjustment plate (4) slidably connected with the first grooves (3), the sliding direction of the adjustment plate (4) is perpendicular to the sliding direction of the movable plate (2), and a first positioning assembly detachably connected with the adjustment plate (4) is arranged on the movable plate (2); Two sliders (5), the two sliders (5) are respectively arranged on the two adjustment plates (4), a plurality of first threaded grooves (6) are formed in the sliders (5), and the first threaded grooves (6) are used for threadedly connecting with bolts on an engine clamp.
2. The thrust test bench for a turbojet engine according to claim 1, characterized in that: The first positioning assembly includes a plurality of first bolts (7) threadedly connected with the side walls of the first grooves (3), a plurality of first threaded holes (8) are formed in the adjustment plate (4), and the first bolts (7) penetrate through the side walls of the first grooves (3) and are threadedly connected with the first threaded holes (8).
3. The thrust test bench for a turbojet engine according to claim 1, characterized in that: One end of the adjustment plate (4) extending out of the first groove (3) is fixedly connected with a support plate (9), the top of the support plate (9) is fixedly connected with a connecting platform (10), the top of the connecting platform (10) is in sliding contact with the bottom of the slider (5), the sliding direction of the slider (5) is perpendicular to the sliding direction of the movable plate (2), and a second positioning assembly detachably connected with the slider (5) is arranged on the connecting platform (10).
4. The thrust test bench for a turbojet engine according to claim 3, characterized in that: The second positioning assembly includes a plurality of long strip through holes (11) formed in the connecting platform (10), a plurality of second bolts (12) are threadedly connected to the slider (5), the plurality of second bolts (12) respectively penetrate through the plurality of long strip through holes (11) and are threadedly connected with lock nuts (13), and the connecting platform (10) is pressed between the slider (5) and the lock nuts (13).
5. The thrust test bench for a turbojet engine according to claim 1, characterized in that: The thrust test assembly includes a thrust sensor (14) fixedly connected to the bottom plate (1), the thrust sensor (14) is in contact with the side wall of the movable plate (2), and the thrust sensor (14) is located between the two sliders (5).
6. The thrust test bench for a turbojet engine according to claim 5, characterized in that: A second groove (15) is formed in the top of the bottom plate (1), a slide rail (16) is fixedly connected in the second groove (15), a slide table (17) is slidably connected to the slide rail (16), the top of the slide table (17) is fixedly connected to the center of the bottom of the movable plate (2), and a gap is provided between the movable plate (2) and the bottom plate (1).
7. The thrust test bench for a turbojet engine according to claim 1, characterized in that: Positioning holes (18) are respectively formed at the four corners of the bottom plate (1).