Lightweight and structural strengthening integrated transformation device for engine

Abstract

The invention discloses an engine light weight and structure strengthening integrated transformation device which comprises a machine shell, an engine is fixedly installed in an inner cavity of the machine shell, three supporting frames and wings are fixedly installed on the outer surface of the machine shell, and an empennage is fixedly connected to one end of the machine shell; the engine comprises a flywheel casing, the flywheel casing is fixedly mounted on one side of an engine body, two mutually meshed flywheels are rotatably mounted in an inner cavity of the flywheel casing, a connecting rod is fixedly connected to one side of one flywheel, a large head and a small head are arranged on the outer surface of the connecting rod, and reinforcing ribs are arranged at the joints of the large head and the connecting rod and the joints of the small head and the connecting rod. Weight reduction is achieved through replacement of non-core component aluminum alloy and removal of a redundant structure, meanwhile, the strength of core component titanium alloy upgrading is strengthened through operations such as non-tearing and non-adhesion stretching, bending and compression, and through titanium alloy material and structure strengthening design, the anti-fatigue performance is improved while the weight of an engine is reduced, and the service life of the engine is prolonged. And high-altitude operation reliability is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of aero-engine structural design and lightweighting, and in particular to an integrated engine lightweighting and structural strengthening transformation device. Background Art

[0002] The core requirements for engines for small sports aircraft are "light weight, high reliability, and high power". Their power-to-weight ratio and unit weight output power directly affect the aircraft's endurance, maneuverability, and flight safety.

[0003] Existing engines, such as those modified from ground vehicles or general-purpose engines, have the defect of weight redundancy. In order to adapt to complex ground working conditions such as bumps and heavy loads, traditional engines mostly use cast iron materials for non-core components such as cylinder blocks and cylinder heads, resulting in excessive weight and inability to meet the use requirements of small sports aircraft.

[0004] Therefore, there is an urgent need for an integrated transformation solution that can reduce weight while strengthening key components through the synergistic effect of material upgrades and structural optimization to adapt to the special needs of small sports aircraft. Summary of the Invention

[0005] In order to remedy the deficiencies of the prior art and solve the problem that the engine is too heavy to be used on a small aircraft, the present invention proposes an integrated engine lightweighting and structural strengthening transformation device.

[0006] An integrated engine lightweighting and structural strengthening transformation device comprises a casing, an engine is fixedly mounted in the inner cavity of the casing, three support frames and wings are fixedly mounted on the outer surface of the casing, and a tail wing is fixedly connected to one end of the casing;

[0007] The engine includes a flywheel housing, which is fixedly mounted on one side of the engine body. Two mutually meshing flywheels are rotatably mounted in the inner cavity of the flywheel housing. A connecting rod is fixedly connected to one side of one of the flywheels. A large head and a small head are provided on the outer surface of the connecting rod. Reinforcing ribs are provided at the connection between the large head and the small head and the connecting rod. The cross-section of the connecting rod is an "I" shape. An outer ring is fixedly mounted on the outer surface of the connecting rod. One end of the connecting rod is fixedly connected to a propeller. A gap is opened inside the wing, and the support frame is I-shaped.

[0008] Preferably, the engine body includes an engine cylinder block and a cylinder head, the engine cylinder block is fixedly mounted on one side of the flywheel housing, and the cylinder head is fixedly mounted on the top of the engine cylinder block.

[0009] Preferably, the engine block and cylinder head are made of high-strength aluminum alloy.

[0010] Preferably, the connecting rod is made of titanium alloy, a reinforcing rib is fixedly installed on the cross section of the connecting rod, and the connecting rod is subjected to weight reduction and reshaping.

[0011] Preferably, the cylinder head top is provided with a groove, and a plugging rod is slidably installed on the inner surface of the groove.

[0012] Preferably, two first mounting blocks are fixedly installed on one side of the engine body, a connecting shaft is rotatably installed on the opposite surfaces of the two first mounting blocks, two knocking blocks are fixedly installed on the outer surface of the connecting shaft, and the knocking blocks are rotatably connected with the plugging rod.

[0013] Preferably, a knocking rod is fixedly installed on one side of the knocking block, a second mounting block is fixedly installed on one side of the engine body, and a sliding rod is slidably installed on the top of the second mounting block.

[0014] Preferably, a piston is slidably installed on the inner surface of the engine cylinder body, a piston rod is rotatably installed on the bottom of the piston, rotating discs are rotatably connected to the bottom of the piston rod, and the two rotating discs are fixedly connected through a transmission shaft.

[0015] The present application has the advantages that:

[0016] 1. The present application replaces the non-core components with aluminum alloy, removes the redundant structure to achieve weight reduction, and upgrades the core components with titanium alloy to strengthen the strength through operations such as stretching, bending and compression without tearing and sticking, thereby solving the problem of insufficient strength caused by simple weight reduction.

[0017] 2. The present application removes the material in the non-stress area of the rod body through equal strength design, and increases arc-shaped reinforcing ribs at the connection between the small head and the large head, which can reduce the weight of the engine and improve the working efficiency of the engine, thereby improving the endurance and maneuverability of the aircraft.

[0018] 3. The core components of the present application are designed through titanium alloy material and structure strengthening design for high-frequency vibration and variable load conditions, which not only reduces the weight of the engine but also improves the fatigue resistance, thereby ensuring the reliability of high-altitude operation. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor.

[0020] Figure 1 It is a whole structure schematic view of one embodiment of the present application.

[0021] Figure 2 It is a schematic view of the internal structure of the shell of one embodiment of the present application.

[0022] Figure 3 This is a schematic diagram of the overall structure of an engine according to the present invention;

[0023] Figure 4 This is a schematic diagram of the rear structure of an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the internal structure of a flywheel housing according to an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the cross-sectional structure of a connecting rod according to an embodiment of the present invention.

[0026] In the figure: 1. Engine body; 11. Engine cylinder block; 12. Cylinder head; 121. Groove; 2. Flywheel housing; 21. Connecting rod; 211. Outer ring; 22. Flywheel; 3. Sealing rod; 31. Spring; 32. Knocking block; 33. First mounting block; 34. Connecting shaft; 35. Knocking rod; 4. Second mounting block; 41. Sliding rod; 5. Piston; 51. Piston rod; 52. Rotating plate; 53. Drive shaft; 6. Casing; 61. Support frame; 62. Wing; 63. Tail; 64. Propeller. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0028] See also Figures 1 to 6 As shown, an integrated engine lightweighting and structural strengthening transformation device includes a casing 6, an engine 1 is fixedly mounted in the inner cavity of the casing 6, three support frames 61 and wings 62 are fixedly mounted on the outer surface of the casing 6, and a tail wing 63 is fixedly connected to one end of the casing 6;

[0029] The engine 1 includes a flywheel housing 2, which is fixedly mounted on one side of the engine body 1. Two mutually meshing flywheels 22 are rotatably mounted in the inner cavity of the flywheel housing 2, one side of which is fixedly connected to a connecting rod 21. A large end and a small end are provided on the outer surface of the connecting rod 21, and reinforcing ribs are provided at the connection between the large end and the small end and the connecting rod 21. The cross-section of the connecting rod 21 is in the shape of an "I", an outer ring 211 is fixedly mounted on the outer surface of the connecting rod 21, one end of the connecting rod 21 is fixedly connected to a propeller 64, a gap is opened inside the wing 62, and the support frame 61 is in the shape of an I;

[0030] The engine cylinder body 11 and the cylinder cover 12 are high-strength aluminum alloy.

[0031] The existing engine, such as a ground vehicle or a general engine modified product, has the defect of weight redundancy, the traditional engine adopts cast iron material for the non-core parts such as cylinder body and cylinder cover to adapt to the complex ground working conditions such as bumping and heavy load, resulting in excessive weight and unable to meet the requirement of sports small aircraft >=1.0kW / kg.

[0032] In use, the engine body 1 rotates with one of the flywheels 22, the rotating flywheel 22 further rotates the other flywheel 22, and the driven flywheel 22 is connected with the connecting rod 21, so that when both flywheels 22 start to rotate, the flywheel 22 also rotates the connecting rod 21, the connecting rod 21 can remove the weight of the flywheel 22 through the I-shaped design, and the strength of the connecting rod 21 can be increased by adding reinforcing ribs on the connecting rod 21 while reducing the weight of the connecting rod 21, and the overall weight of the engine can be further reduced by replacing the non-core parts made of cast iron with parts made of titanium alloy, so as to achieve the purpose of optimizing the engine and enabling the ground engine to be used on the aircraft.

[0033] When the small aircraft flies, the engine 1 rotates with the connecting rod 21, and the connecting rod 21 can drive the propeller 64. The rotation of one end of the machine shell 6 realizes the driving of the small aircraft, and the hollow design of the machine shell 6 and the I-shaped design of the supporting frame 61 can reduce the overall weight of the small aircraft without affecting the strength of the small aircraft.

[0034] Further, as shown in the figure, Figure 2 The engine body 1 includes an engine cylinder body 11 and a cylinder cover 12, the engine cylinder body 11 is fixedly installed on one side of the flywheel shell 2, and the cylinder cover 12 is fixedly installed on the top of the engine cylinder body 11.

[0035] In use, the engine cylinder body 11 and the cylinder cover 12 are essential accessories of the engine body 1, and the cylinder cover 12 is converted into a closed space by the engine cylinder body 11 in cooperation with the cylinder cover 12 to enable the engine body 1 to be used.

[0036] Further, as shown in the figure, Figure 4 The connecting rod 21 is made of titanium alloy, and the connecting rod 21 is provided with reinforcing ribs on the cross section and is lightened and reshaped.

[0037] The application is used for transmitting the power generated by the engine body 1 to the outside through the connecting rod 21, so the connecting rod 21 needs to have sufficient strength, and at the same time, the weight of the connecting rod 21 needs to be reduced, so the cylinder cover 12 originally in a cylindrical shape is modified into a H-shaped structure with two through holes in the inside, which can reduce the material of the connecting rod 21 and reduce the weight of the connecting rod 21, and the H-shaped structure can still maintain the strength of the connecting rod 21 for transmission work.

[0038] Further, as shown in Figure 3 The top of the cylinder cover 12 is provided with a groove 121, and the inner surface of the groove 121 is slidably provided with a blocking rod 3, and the outer surface of the blocking rod 3 is provided with a spring 31.

[0039] The engine body 1 is fixedly provided with two first mounting blocks 33, and the opposite surfaces of the two first mounting blocks 33 are jointly rotatably provided with a connecting shaft 34, and the outer surface of the connecting shaft 34 is fixedly provided with two knocking blocks 32, and the knocking blocks 32 are rotatably connected with the blocking rod 3.

[0040] The side of the knocking block 32 is fixedly provided with a knocking rod 35, and the side of the engine body 1 is fixedly provided with a second mounting block 4, and the top of the second mounting block 4 is slidably provided with a sliding rod 41.

[0041] The inner surface of the engine cylinder body 11 is slidably provided with a piston 5, the bottom of the piston 5 is rotatably provided with a piston rod 51, the bottom of the piston rod 51 is rotatably connected with a rotating disc 52, and the two rotating discs 52 are fixedly connected through a transmission shaft 53.

[0042] In use, the piston 5 slides in the inner cavity of the engine cylinder body 11, and the piston 5 moves with the piston rod 51 when it slides up and down, and further, the piston rod 51 can drive the rotating disc 52 to rotate with the transmission shaft 53, and the transmission shaft 53 is fixedly connected with one of the flywheels 22, thereby driving the flywheel 22, when the piston 5 slides up and down, the blocking rod 3 slides in the inner surface of the groove 121, and the bottom of the blocking rod 3 blocks the groove 121 when the piston 5 slides upward, thereby achieving the purpose of making the inner cavity of the engine cylinder body 11 in a sealed state, when the piston 5 slides downward, the spring 31 will lift the blocking rod 3, and the blocking rod 3 will move with the knocking block 32, the knocking block 32 will rotate at a small angle around the connecting shaft 34, and the knocking block 32 will intermittently contact the sliding rod 41 with the knocking rod 35 when it rotates, and in this process, the sliding rod 41 will also slide relative to the second mounting block 4.

[0043] When the connecting rod 21 rotates, the two outer rings 211 also rotate with the connecting rod 21, and the two slide rods 41 are respectively located at the top of the two outer rings 211, so that the outer rings 211 can intermittently lift the slide rods 41, further enabling the slide rods 41 to drive the knocking rod 35, the knocking block 32 and the blocking rod 3 to move, so that the engine can normally operate.

[0044] Working principle: in use, the explosion of fuel in the inner cavity of the engine body 1 can push the piston 5 to slide in the inner cavity of the engine cylinder 11, and when the piston 5 slides, the rotating disc 52 is driven to rotate through the piston rod 51, both rotating discs 52 rotate around the transmission shaft 53 as the axis, and the rotating disc 52 also drives the transmission shaft 53 to rotate, the transmission shaft 53 further drives one of the flywheels 22 to rotate, and both flywheels 22 can rotate through the meshing of the two flywheels 22, and the other flywheel 22 drives the connecting rod 21 to rotate, and the connecting rod 21 drives the two outer rings 211 to rotate, and the two outer rings 211 can intermittently lift the slide rods 41, the slide rods 41 slide relative to the second mounting block 4, the slide rods 41 further intermittently lift the knocking rod 35, the knocking rod 35 can drive the knocking block 32 to rotate, and the knocking rod 35 further controls the blocking rod 3 to slide on the inner surface of the groove 121, so as to realize the closing and opening of the inner cavity of the engine cylinder 11.

[0045] In use, in order to reduce the overall weight of the engine, the inner cavity of the connecting rod 21 is designed as an I-shaped structure through the connecting rod 21, which can remove part of the material in the inner cavity of the connecting rod 21, thereby achieving the purpose of weight reduction, and at the same time, the I-shaped structure cooperates with the reinforcing ribs installed on the outer surface of the connecting rod 21 to maintain the strength of the connecting rod 21, and the manufacturing material of the connecting rod 21 is replaced from cast iron to titanium alloy, which can further reduce the weight of the engine and increase the applicability of the engine, so that the engine used on land can also be used on an airplane.

[0046] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0047] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. An integrated engine lightweighting and structural strengthening transformation device, comprising a housing (6), an engine (1) being fixedly mounted in an inner cavity of the housing (6), characterized in that: Three support frames (61) and wings (62) are fixedly mounted on the outer surface of the casing (6), and a tail wing (63) is fixedly connected to one end of the casing (6); The engine (1) comprises a flywheel housing (2), the flywheel housing (2) being fixedly mounted on one side of the engine body (1), two mutually meshing flywheels (22) being rotatably mounted in the inner cavity of the flywheel housing (2), one side of the flywheel (22) being fixedly connected to a connecting rod (21), the outer surface of the connecting rod (21) being provided with a large end and a small end, the connection between the large end and the small end and the connecting rod (21) being provided with a reinforcing rib, the cross section of the connecting rod (21) being in the shape of an "I", the outer surface of the connecting rod (21) being fixedly mounted with an outer ring (211), one end of the connecting rod (21) being fixedly connected to a propeller (64), a gap being provided inside the wing (62), and the supporting frame (61) being in the shape of an "I".

2. The engine lightweighting and structural strengthening integrated transformation device according to claim 1, characterized in that: The engine body (1) comprises an engine cylinder block (11) and a cylinder head (12); the engine cylinder block (11) is fixedly mounted on one side of a flywheel housing (2); and the cylinder head (12) is fixedly mounted on the top of the engine cylinder block (11).

3. The engine lightweighting and structural strengthening integrated transformation device according to claim 2, characterized in that: The engine cylinder block (11) and the cylinder head (12) are made of high-strength aluminum alloy.

4. The engine lightweighting and structural strengthening integrated transformation device according to claim 3, characterized in that: The connecting rod (21) is composed of a titanium alloy, a reinforcing rib is fixedly installed on the cross section of the connecting rod (21), and the connecting rod (21) is subjected to weight reduction and reshaping.

5. The integrated engine lightweighting and structural strengthening modification device according to claim 4 is characterized in that: A groove (121) is provided on the top of the cylinder cover (12), a blocking rod (3) is slidably mounted on the inner surface of the groove (121), and a spring (31) is wound around the outer surface of the blocking rod (3).

6. The engine lightweighting and structural strengthening integrated transformation device according to claim 5, characterized in that: Two first mounting blocks (33) are fixedly mounted on one side of the engine body (1); a connecting shaft (34) is rotatably mounted on the opposite surfaces of the two first mounting blocks (33); two knocking blocks (32) are fixedly mounted on the outer surface of the connecting shaft (34); and the knocking blocks (32) are rotatably connected to the blocking rod (3).

7. The integrated engine lightweighting and structural strengthening modification device according to claim 6, characterized in that: A knocking rod (35) is fixedly mounted on one side of the knocking block (32), a second mounting block (4) is fixedly mounted on one side of the engine body (1), and a sliding rod (41) is slidably mounted on the top of the second mounting block (4).

8. The engine lightweighting and structural strengthening integrated transformation device according to claim 7, characterized in that: A piston (5) is slidably mounted on the inner surface of the engine cylinder (11), a piston rod (51) is rotatably mounted on the bottom of the piston (5), a rotating disk (52) is rotatably connected to the bottom of the piston rod (51), and the two rotating disks (52) are fixedly connected via a transmission shaft (53).

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