Small-bypass-ratio turbofan engine structure model

Abstract

The utility model relates to the field of engine models, in particular to a small-bypass-ratio turbofan engine structure model. The utility model aims to solve the problems that the working principle and performance characteristics of a real engine cannot be better simulated in the prior art, so that enthusiasts are difficult to comprehensively and intuitively understand the performance of the turbofan engine under different working conditions. The engine shell can be quickly fixed between the lower bracket and the lower pressing frame through the lower bracket and the lower pressing frame, so that quick mounting and dismounting of the engine shell are realized, and when the performance of a model is displayed, the engine shell can be quickly mounted and dismounted by driving the tail jet turbofan to rotate in the engine shell. The generated wind force blows the wind receiving plate to drive the tail spraying fin plate to automatically turn over and adjust, so that the working principle and performance characteristics of the small-bypass-ratio turbofan engine can be simulated more truly and accurately, and enthusiasts can comprehensively and intuitively observe the performance of the turbofan engine under different working conditions; and the requirements of enthusiasts on convenience and high efficiency are met.

Description

Technical Field

[0001] The utility model relates to the technical field of engine models, in particular to a structural model of a small bypass ratio turbofan engine. Background Art

[0002] In recent years, the field of model making has continued to develop. As a high-end product, the low-bypass-ratio turbofan engine structural model has been favored by many aviation model enthusiasts. With the advancement of technology, aviation model enthusiasts have increasingly higher requirements for the performance and authenticity of the models. The turbofan engine structural model must not only be as close to the real engine as possible in appearance, but also continuously improve in performance to meet the enthusiasts' pursuit of higher flight speeds and more stable flight attitudes.

[0003] The tail nozzle of traditional low-bypass-ratio turbofan engine structural models usually adopts a fixed structure, which cannot better simulate the working principle and performance characteristics of the real engine, making it difficult for enthusiasts to fully and intuitively understand the performance of the turbofan engine under different working conditions. This, to a certain extent, limits the performance of the model and the enthusiasts' in-depth understanding of the turbofan engine. In addition, the tail nozzles of a small number of turbofan engine structural models are manually adjusted, but the adjustment process is relatively cumbersome and lacks intelligent control functions, which makes it difficult to meet the enthusiasts' needs for convenience and efficiency. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] In order to solve the problem that existing technologies cannot better simulate the working principles and performance characteristics of real engines, making it difficult for enthusiasts to fully and intuitively understand the performance of turbofan engines under different working conditions.

[0006] Technical Solution

[0007] The technical solution of the utility model is: a low bypass ratio turbofan engine structural model, comprising a base, an engine casing is arranged above the base, and a flow regulating component is installed at the tail of the engine casing;

[0008] The flow adjustment assembly includes a tail jet fin, a tail jet turbofan, an adjusting shaft, an adjusting gear, a positioning frame, a push-pull rack and a wind receiving plate. The tail surface of the engine casing is hinged with several groups of adjusting shafts in a ring array, the surface of the adjusting shaft is fixed with a tail jet fin, the interior of the engine casing is equipped with a tail jet turbofan, the middle part of the surface of the adjusting shaft is fixed with an adjusting gear, and a clearance groove adapted to the adjusting gear is opened inside the engine casing. A positioning frame is welded on the side of the engine casing close to the adjusting gear, and a push-pull rack is arranged inside the positioning frame, and the wind receiving plate is fixed to the end of the push-pull rack away from the tail jet fin.

[0009] Preferably, by driving the tail jet turbofan to rotate inside the engine casing, the generated wind force will blow the wind receiving plate to push the push-pull rack to slide inside the positioning frame, which can drive the adjusting gear to rotate, and realize the automatic flip adjustment of the adjusting shaft and the tail jet fin, so as to achieve a more realistic and accurate simulation of the working principle and performance characteristics of the small bypass ratio turbofan engine, so that enthusiasts can comprehensively and intuitively observe the performance of the turbofan engine under different working conditions, which helps to deepen the model enthusiasts' understanding of the turbofan engine.

[0010] Furthermore, the surface of the adjusting gear is meshed with a driving gear, a rotating shaft is fixed inside the driving gear, and the rotating shaft is rotatably connected to the inside of the positioning frame. Through the driving gear and the rotating shaft, the thrust of the wind receiving plate pushing the push-pull rack can be transmitted to the adjusting gear.

[0011] Furthermore, limit strips are symmetrically fixed on both sides of the surface of the push-pull rack, and a limit groove adapted to the limit strip is opened inside the positioning frame, and the push-pull rack and the positioning frame are slidingly connected through the limit strip and the limit groove. The movement of the push-pull rack can be limited by the limit strip, which facilitates the stable transmission of power.

[0012] Furthermore, a fixed plate is provided on the side of the wind receiving plate away from the push-pull rack, the fixed plate is welded to the inside of the engine casing, and a tension spring is fixed between the fixed plate and the wind receiving plate. The tension spring can automatically drive the tail jet fin to adjust or reset when the wind force of the tail jet turbofan weakens or disappears.

[0013] Furthermore, a fixing assembly is provided between the base and the engine casing, and the fixing assembly includes a support frame, a lower bracket, an articulated seat and a lower pressure frame. Support frames are welded on both sides of the surface of the base, and a lower bracket is welded on the surface of the support frame, and the engine casing is placed between the two groups of lower brackets. A hinged seat is fixed on one side of the surface of the lower bracket, and a lower pressure frame adapted to the lower bracket is hinged inside the articulated seat. The engine casing can be quickly fixed between the two through the lower bracket and the lower pressure frame, which can save a lot of time. Not only can it make the cleaning, lubrication and other maintenance work of the engine model more efficient, but it can also be quickly adjusted according to different display layouts and themes, so that the model can be flexibly arranged in different display areas.

[0014] Furthermore, a wedge pressure block is fixed on the side of the lower pressure frame away from the hinge seat, and a swing plate is hinged on the side of the lower bracket surface close to the wedge pressure block. A pressure block adapted to the wedge pressure block is fixed on the surface of the swing plate, and a pull ring is welded on the surface of the swing plate. The wedge pressure block and the pressure block can be used to quickly lock and unlock the lower bracket and the lower pressure frame, thereby realizing rapid installation and disassembly of the engine casing.

[0015] Furthermore, a support plate is fixed on one side of the lower bracket surface close to the swing plate, and a spring is fixed between the support plate and the swing plate, so that the swing plate and the pressure block can be quickly reset by the spring.

[0016] Beneficial effects

[0017] Compared with the prior art, the beneficial effects of the present invention are: the engine casing can be quickly fixed between the lower bracket and the lower pressure frame, and the lower bracket and the lower pressure frame can be quickly locked and unlocked through the wedge pressure block and the pressure block, thereby realizing the rapid installation and disassembly of the engine casing. During this period, the elastic force of the spring is utilized, not only can the wedge pressure block and the pressure block fit tightly, but also it is convenient to quickly reset the swing plate and the pressure block. When demonstrating the performance of the model, by driving the tail jet turbofan to rotate inside the engine casing, the wind force generated will blow the wind receiving plate to stretch the tension spring to form. Change, and then push the push-pull rack to slide inside the positioning frame. Through the movement of the push-pull rack, the driving gear can be driven to engage the adjusting gear to rotate, so as to drive the adjusting shaft and the tail jet fin to automatically flip and adjust, so as to achieve a more realistic and accurate simulation of the working principle and performance characteristics of the small bypass ratio turbofan engine, so that enthusiasts can fully and intuitively observe the performance of the turbofan engine under different working conditions, which helps to deepen the model enthusiasts' understanding of the turbofan engine, meet their needs for exploration and learning, expand the scope of use and playability of the model, and meet the enthusiasts' needs for convenience and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 What is shown is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 What is shown is an overall cross-sectional view of the utility model;

[0020] Figure 3 Shown is a schematic diagram of the partial structure of the flow regulating component in the present utility model;

[0021] Figure 4 The utility model is shown in Figure 3 A magnified view of point A;

[0022] Figure 5 Shown is a schematic diagram of the structure of the fixing component in the present utility model;

[0023] Figure 6 Shown is a schematic structural diagram of the mid-tail jet turbofan and regulating shaft of the utility model.

[0024] Explanation of the reference numerals: 1-base, 2-engine casing, 3-flow regulating assembly, 31-tail jet fin plate, 32-tail jet turbofan, 33-adjusting shaft, 34-adjusting gear, 35-driving gear, 36-rotating shaft, 37-positioning frame, 38-push-pull rack, 39-limiting bar, 310-wind receiving plate, 311-tension spring, 312-fixing plate, 4-fixing assembly, 41-support frame, 42-lower bracket, 43-hinge seat, 44-lower pressure frame, 45-wedge pressure block, 46-pressure block, 47-swinging plate, 48-support plate, 49-spring. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Example 1:

[0027] See Figure 1-5 The present invention provides an embodiment: a structural model of a low bypass ratio turbofan engine, comprising a base 1, an engine casing 2 is arranged above the base 1, and a flow regulating component 3 is installed at the tail of the engine casing 2;

[0028] The flow regulating assembly 3 includes a tail jet fin plate 31, a tail jet turbofan 32, an adjusting shaft 33, an adjusting gear 34, a positioning frame 37, a push-pull rack 38 and a wind receiving plate 310. The tail surface of the engine casing 2 is hinged with several groups of adjusting shafts 33 in a ring array. The surface of the adjusting shaft 33 is fixed with a tail jet fin plate 31. The tail jet turbofan 32 is installed inside the engine casing 2. The middle part of the surface of the adjusting shaft 33 is fixed with an adjusting gear 34, and the inside of the engine casing 2 is provided with a makeshift groove adapted to the adjusting gear 34. A positioning frame 37 is welded on one side of the body 2 near the adjusting gear 34, and a push-pull rack 38 is arranged inside the positioning frame 37. A wind-receiving plate 310 is fixed to the end of the push-pull rack 38 away from the tail jet fin plate 31. By driving the tail jet turbofan 32 to rotate inside the engine casing 2, the generated wind force will blow the wind-receiving plate 310 to push the push-pull rack 38 to slide inside the positioning frame 37, thereby driving the adjusting gear 34 to rotate, thereby driving the adjusting shaft 33 and the tail jet fin plate 31 to automatically flip and adjust.

[0029] It should be noted that a driving mechanism is provided inside the engine casing 2, which can drive the tail jet turbofan 32 to operate inside the engine casing 2, thereby enabling the tail jet turbofan 32 to generate wind force inside the engine casing 2, and the magnitude of the generated wind force can be controlled automatically. According to the magnitude of the wind force, the opening and closing angles of the tail jet fins 31 can be automatically adjusted, thereby increasing the authenticity and ornamental value of the model.

[0030] Example 2:

[0031] See also Figure 1-5 In this embodiment, the surface of the adjusting gear 34 is meshed with a driving gear 35, and a rotating shaft 36 is fixed inside the driving gear 35, and the rotating shaft 36 is rotatably connected to the inside of the positioning frame 37. Through the driving gear 35 and the rotating shaft 36, the thrust of the push-pull rack 38 pushed by the wind receiving plate 310 can be transmitted to the adjusting gear 34. The limit bars 39 are symmetrically fixed on both sides of the surface of the push-pull rack 38, and the positioning frame 37 is provided with a limit groove adapted to the limit bar 39, and the push-pull rack 38 and The positioning frame 37 is slidably connected to the limiting groove through the limiting bar 39. The movement of the push-pull rack 38 can be limited by the limiting bar 39, which is convenient for the stable transmission of power. A fixing plate 312 is provided on the side of the wind receiving plate 310 away from the push-pull rack 38. The fixing plate 312 is welded to the inside of the engine casing 2, and a tension spring 311 is fixed between the fixing plate 312 and the wind receiving plate 310. The tension spring 311 can automatically drive the tail jet fin plate 31 to adjust or reset when the wind force of the tail jet turbofan 32 weakens or disappears.

[0032] And through the fixing component 4, a fixing component 4 is arranged between the base 1 and the engine housing 2, the fixing component 4 includes a support frame 41, a lower bracket 42, a hinge seat 43 and a lower pressure frame 44, support frames 41 are welded on both sides of the surface of the base 1, and the surface of the support frame 41 is welded with a lower bracket 42, and the engine housing 2 is placed between the two groups of lower brackets 42, a hinge seat 43 is fixed on one side of the surface of the lower bracket 42, and the interior of the hinge seat 43 is hinged with a lower pressure frame 44 that is adapted to the lower bracket 42. The engine housing 2 can be quickly fixed between the two through the lower bracket 42 and the lower pressure frame 44, which can save a lot of time. It can not only make the cleaning, lubrication and other maintenance work of the engine model more efficient, but also can be quickly adjusted according to different display layouts and themes, so that the model can be flexibly arranged in different display areas.

[0033] It should be noted that for a low-bypass turbofan engine, most of the power comes from the bypass exhaust gas that drives the core engine. This type of engine usually uses a mixing nozzle, that is, the bypass exhaust gas is mixed with the bypass airflow before being discharged. The mixing nozzle can be deformed to adjust the size and even direction of the thrust. The high-temperature exhaust gas is cooled by the bypass airflow, which is also beneficial to reduce the infrared characteristics of the engine.

[0034] A wedge pressure block 45 is fixed to the side of the lower pressure frame 44 away from the hinge seat 43, and a swing plate 47 is hinged on the side of the lower bracket 42 close to the wedge pressure block 45. A pressure block 46 adapted to the wedge pressure block 45 is fixed on the surface of the swing plate 47, and a pull ring is welded on the surface of the swing plate 47. The wedge pressure block 45 and the pressure block 46 can be quickly locked and unlocked between the lower bracket 42 and the lower pressure frame 44, thereby realizing rapid installation and removal of the engine housing 2. A support plate 48 is fixed to the side of the lower bracket 42 close to the swing plate 47. The support plate 48 and the swing plate A spring 49 is fixed between the movable plates 47, which facilitates the rapid reset of the swing plate 47 and the pressure block 46. When the lower pressure frame 44 flips over to the top of the lower bracket 42, the wedge pressure block 45 will squeeze the pressure block 46 to drive the swing plate 47 to flip on the surface of the lower bracket 42, thereby squeezing the spring 49 to deform and generate elastic force. As the wedge pressure block 45 and the inclined surface of the pressure block 46 contact, the wedge pressure block 45 will eventually be stuck at the bottom of the pressure block 46, realizing the locking between the lower pressure frame 44 and the lower bracket 42, and completing the rapid installation of the engine housing 2.

[0035] Through the above steps, the engine casing 2 can be quickly fixed between the lower bracket 42 and the lower pressure frame 44, and the lower bracket 42 and the lower pressure frame 44 can be quickly locked and unlocked through the wedge pressure block 45 and the pressure block 46, thereby realizing the rapid installation and disassembly of the engine casing 2. During this period, the elastic force of the spring 49 can not only make the wedge pressure block 45 and the pressure block 46 fit tightly, but also facilitate the rapid reset of the swing plate 47 and the pressure block 46. When demonstrating the performance of the model, by driving the tail jet turbofan 32 to rotate inside the engine casing 2, the generated wind force will blow the wind receiving plate 310 to stretch the tension spring 311 to generate The push-pull rack 38 is deformed, thereby pushing the push-pull rack 38 to slide inside the positioning frame 37. Through the movement of the push-pull rack 38, the driving gear 35 can be driven to engage the adjusting gear 34 to rotate, so as to drive the adjusting shaft 33 and the tail jet fin plate 31 to automatically flip and adjust, thereby achieving a more realistic and accurate simulation of the working principle and performance characteristics of the small bypass ratio turbofan engine, so that enthusiasts can fully and intuitively observe the performance of the turbofan engine under different working conditions, which helps to deepen the model enthusiasts' understanding of the turbofan engine, meet their needs for exploration and learning, expand the scope of use and playability of the model, and meet the enthusiasts' needs for convenience and efficiency.

[0036] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the purpose of the present invention.

Claims

1. A low bypass ratio turbofan engine structural model, comprising a base (1), characterized in that: An engine housing (2) is provided above the base (1), and a flow regulating assembly (3) is installed at the rear of the engine housing (2); The flow regulating assembly (3) includes a tail jet fin plate (31), a tail jet turbofan (32), an adjusting shaft (33), an adjusting gear (34), a positioning frame (37), a push-pull rack (38) and a wind receiving plate (310). The tail surface of the engine housing (2) is hinged with a plurality of adjusting shafts (33) in a ring array. The surface of the adjusting shaft (33) is fixed with the tail jet fin plate (31). The tail jet turbofan (32) is installed inside the engine housing (2). The middle part of the surface of the adjusting shaft (33) is fixed with an adjusting gear (34). A clearance groove adapted to the adjusting gear (34) is provided inside the engine housing (2). A positioning frame (37) is welded on one side of the engine housing (2) close to the adjusting gear (34). A push-pull rack (38) is provided inside the positioning frame (37). The wind receiving plate (310) is fixed to the end of the push-pull rack (38) away from the tail jet fin plate (31).

2. The low bypass ratio turbofan engine structural model according to claim 1, characterized in that: The surface of the adjusting gear (34) is meshedly connected with a driving gear (35), a rotating shaft (36) is fixed inside the driving gear (35), and the rotating shaft (36) is rotatably connected to the inside of the positioning frame (37).

3. The low bypass ratio turbofan engine structural model according to claim 1, characterized in that: Limiting strips (39) are symmetrically fixed on both sides of the surface of the push-pull rack (38), and a limiting groove adapted to the limiting strip (39) is provided inside the positioning frame (37), and the push-pull rack (38) and the positioning frame (37) are slidably connected via the limiting strip (39) and the limiting groove.

4. The low bypass ratio turbofan engine structural model according to claim 1, characterized in that: A fixing plate (312) is provided on the side of the wind receiving plate (310) away from the push-pull rack (38); the fixing plate (312) is welded inside the engine housing (2); and a tension spring (311) is fixed between the fixing plate (312) and the wind receiving plate (310).

5. The low bypass ratio turbofan engine structural model according to claim 1, characterized in that: A fixing assembly (4) is provided between the base (1) and the engine housing (2), and the fixing assembly (4) comprises a support frame (41), a lower bracket (42), an articulated seat (43) and a lower pressure frame (44). The support frames (41) are welded on both sides of the surface of the base (1), the lower bracket (42) is welded on the surface of the support frame (41), and the engine housing (2) is placed between the two groups of lower brackets (42). The articulated seat (43) is fixed on one side of the surface of the lower bracket (42), and the interior of the articulated seat (43) is hinged with a lower pressure frame (44) adapted to the lower bracket (42).

6. The low bypass ratio turbofan engine structural model according to claim 5, characterized in that: A wedge pressure block (45) is fixed on the side of the lower pressure frame (44) away from the hinge seat (43), and a swing plate (47) is hinged on the side of the surface of the lower bracket (42) close to the wedge pressure block (45). A pressure block (46) adapted to the wedge pressure block (45) is fixed on the surface of the swing plate (47), and a pull ring is welded on the surface of the swing plate (47).

7. The low bypass ratio turbofan engine structural model according to claim 6, characterized in that: A support plate (48) is fixed on one side of the surface of the lower bracket (42) close to the swing plate (47), and a spring (49) is fixed between the support plate (48) and the swing plate (47).

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