A small aircraft engine packaging box

Abstract

This invention belongs to the field of engine packaging, and specifically relates to a small aircraft engine packaging box, comprising: a base with two supports fixedly mounted on it; a box body fixed to the base, with a sealing seat fixed inside the box body and mounted on the two supports; a covering base, the covering base being fixed to the inner sidewall of the box body, forming a sealed cavity between the covering base and the sealing seat, an air intake pipe with a control valve mounted on the sidewall of the sealed cavity, a flexible rubber sheet for the covering base, and a liquid cavity formed within the covering base. Compared with transmission engine packaging boxes, this invention, in addition to meeting the normal packaging and transportation requirements of engines, features a compact structure, light weight, high reliability, low cost, and ease of use. In particular, its low cost and reusability reduce resource waste, resulting in significant economic and social benefits.

Description

Technical Field

[0001] This invention belongs to the field of engine packaging, and in particular relates to a small aircraft engine packaging box. Background Technology

[0002] An aircraft engine is a thermodynamic machine with a precise structure and complex assembly. It mainly provides flight power for helicopters, fixed-wing aircraft, and autogyros.

[0003] Existing engine packaging boxes, such as the one disclosed in Chinese Patent Publication No. CN109573332B, use thermosetting resin to evenly distribute the overall weight of the engine across the entire surface of the engine, so that the pressure on the engine surface is not too high. At the same time, by fully covering the bottom of the engine, it can ensure that the engine can maintain good stability with the packaging box even if it is tilted during transportation, and will not tip over significantly.

[0004] Before curing, thermosetting resins are generally solids or viscous liquids with low molecular weight. During the molding process, they can soften or flow, have plasticity, and can be made into a certain shape. At the same time, they undergo chemical reactions to cross-link and cure. Sometimes, some by-products, such as water, are released. This reaction is irreversible. Once cured, it is impossible to soften or flow again under pressure and heat. If the temperature is too high, it will decompose or carbonize.

[0005] Traditional engine packaging boxes are complex in structure, cumbersome to use, and large in size. They are mainly used for packaging high-power engines and cannot meet the needs of operating and storing small engines with a total weight of less than 100kg. The packaging of small engines is usually made of wooden boards nailed together, which cannot be reused, is costly, not rainproof, unstable during transportation, unsafe, and can easily damage the engine. The above-mentioned solution uses thermosetting resin to wrap and fix the engine as a whole. However, because thermosetting resin has poor mechanical properties and stability, and because once thermosetting resin has cured, it cannot be softened or flowed again under pressure and heat, it cannot be reused multiple times for engines of different shapes and sizes, and its application scope is relatively limited. Summary of the Invention

[0006] The purpose of this invention is to address the problems mentioned in the background section by providing a small aircraft engine packaging box.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a small aircraft engine packaging box, including a base, on which two brackets are fixedly installed;

[0008] The box body is fixed on the base, and a sealing seat is fixed inside the box body. The sealing seat is installed on two brackets.

[0009] The base is covered and fixed to the inner wall of the box. A sealed cavity is formed between the base and the sealing seat. An air inlet pipe is provided on the side wall of the sealed cavity. A control valve is provided on the air inlet pipe. The base is covered with a flexible rubber sheet. A liquid cavity is opened in the base and filled with electrorheological fluid. Multiple sets of electrode plates are arranged at equal intervals in the liquid cavity. Each set of electrode plates consists of two positive and negative electrode plates in opposite positions.

[0010] An inertial assembly includes a housing fixed to a sealing seat. The upper surface of the housing has an opening communicating with the interior of the box. A sliding plate is slidably connected to the interior of the housing, and a counterweight is slidably connected to the bottom surface of the housing. Guide rods are fixed on both sides of the counterweight, and the two guide rods pass through the side walls of both sides of the housing. Limiting plates are fixed on both guide rods, and the limiting plates are connected to the side walls of the housing via a first spring. A helical coil is embedded in the sliding plate, and a permanent magnet is embedded in the counterweight. Both ends of the helical coil are electrically connected to an electrode plate.

[0011] Furthermore, the base is equipped with a tail nozzle box, a file box, and a tool box.

[0012] Furthermore, the enclosure is an integral frame structure composed of Class I plywood and Class II timber, and two louvers, two observation windows, and a set of protective irons are symmetrically installed on the side wall of the enclosure.

[0013] Furthermore, four latches are symmetrically arranged on the side wall of the box, and a waterproof lip is provided around the upper surface of the base. Four buckles that match the latches are fixed on the base at the edge of the waterproof lip.

[0014] Furthermore, it also includes an adjustment component, which includes two limiting blocks slidably disposed on the bottom surface of the box body. Both limiting blocks are connected to a counterweight block via a second spring. A through groove is provided in the limiting block for the guide rod to pass through. A resistance coil is disposed in the through groove and is spirally wound along the length of the through groove. A slider is fixed to the portion of the guide rod surface located in the through groove. The two ends of the spiral coil are electrically connected to the electrode plate via the slider and the resistance coil, respectively. When the guide rod slides in the through groove, the slider contacts the resistance coil at different positions, thereby changing the resistance value of the circuit connected to the resistance coil.

[0015] Furthermore, the upper end of the limiting block adopts a wedge-shaped structure, and the bottom of the sliding plate is provided with an inclined surface that matches the wedge-shaped structure.

[0016] Furthermore, the bottom of the base is provided with several square timbers arranged at equal intervals.

[0017] Compared with existing technologies, the advantages of this small aircraft engine packaging box are:

[0018] 1. Compared with the transmission engine packaging box, the present invention can not only meet the normal packaging and transportation requirements of the engine, but also has the characteristics of compact structure, light weight, high reliability, low cost and convenient use. In particular, it is low cost and reusable, which reduces resource waste and has good economic and social benefits.

[0019] 2. This invention, by setting up a covered base and an electrorheological fluid, allows the electrorheological fluid to be in a liquid state in environments where the electric field strength is below a critical value, enabling the covered base to form and completely adhere to the bottom of the engine, providing excellent support and protection. In environments where the electric field strength is above the critical value, the electrorheological fluid is in a solid state, effectively fixing the bottom of the engine. During transportation, when the packaging box shakes or tilts due to inertia, it prevents the engine from shaking and colliding, demonstrating good stability. Furthermore, the electrorheological fluid can undergo free liquid-to-solid transformation under the influence of an electric field. Compared to existing technologies that use thermosetting resin for heating deformation and cooling fixation, this method offers higher stability, allows for multiple deformations, and has a wider range of applications.

[0020] 3. This invention, by setting up a counterweight, a permanent magnet, a spiral coil, and an electrode plate, allows the counterweight to slide forward or backward under the action of inertial force when the packaging box shakes or tilts due to inertia. As the permanent magnet slides with the counterweight, the spiral coil continuously cuts the magnetic field lines of the permanent magnet to generate an induced current, which powers the electrode plate. Thus, the electrode plate can be automatically energized by tilting or shaking the packaging box, causing the electrochemical fluid to undergo a liquid-to-solid transformation, thereby fixing the engine and making it flexible in use.

[0021] 4. By setting a guide rod, a slider, and a resistance coil, this invention can control the resistance value of the resistance coil connected to the circuit according to the sliding distance of the counterweight, thereby controlling the magnitude of the electric field strength between the electrode plates. That is, the greater the overall shaking amplitude or tilt angle of the packaging box, the greater the sliding distance of the counterweight, which increases the resistance value of the resistance coil connected to the circuit, and thus increases the electric field strength. This makes the electrorheological fluid transform from liquid to solid faster, further improving the protection effect on the engine. Attached Figure Description

[0022] Figure 1 This is a perspective view of a small aircraft engine packaging box provided by the present invention;

[0023] Figure 2 This is a front view schematic diagram of the internal structure of a small aircraft engine packaging box provided by the present invention;

[0024] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 This is a schematic diagram of the internal structure of a small aircraft engine packaging box provided by the present invention;

[0026] Figure 5 yes Figure 4 Enlarged view of section B in the middle.

[0027] In the diagram, 1 is the base, 2 is the bracket, 3 is the box, 4 is the sealing seat, 5 is the covered base, 6 is the sealing cavity, 7 is the air inlet pipe, 8 is the electrorheological fluid, 9 is the electrode plate, 10 is the box body, 11 is the sliding plate, 12 is the counterweight, 13 is the guide rod, 14 is the limiting plate, 15 is the first spring, 16 is the spiral coil, 17 is the permanent magnet, 18 is the tail nozzle box, 19 is the file box, 20 is the tool box, 21 is the louver, 22 is the observation window, 23 is the guard iron, 24 is the latch, 25 is the nut, 26 is the limiting block, 27 is the second spring, 28 is the through groove, 29 is the resistance coil, 30 is the slider, and 31 is the square timber. Detailed Implementation

[0028] The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0029] like Figure 1-5 As shown, a small aircraft engine packaging box includes a base 1, a box body 3, a covering base 5, an inertial assembly and an adjustment assembly. Two brackets 2 are fixedly installed on the base 1. Several square timbers 31 are arranged at equal intervals on the bottom of the base 1. A certain space is left under the base 1 to facilitate the transfer of the packaging box using a manual trailer or forklift. The base 1 is provided with a tail nozzle box 18, a document box 19 and a tool box 20.

[0030] The housing 3 is fixed on the base 1. A sealing seat 4 is fixed inside the housing 3. The sealing seat 4 is installed on two brackets 2. The brackets 2 are used to provide stable support for the sealing seat 4.

[0031] The cover base 5 is fixed to the inner wall of the box 3. A sealing cavity 6 is formed between the cover base 5 and the sealing seat 4. An air inlet pipe 7 is provided on the side wall of the sealing cavity 6. A control valve is provided on the air inlet pipe 7. The cover base 5 is made of flexible rubber sheet and has a liquid cavity. The liquid cavity is filled with electrorheological fluid 8. Multiple sets of electrode plates 9 are arranged at equal intervals in the liquid cavity. Each set of electrode plates 9 consists of two positive and negative electrode plates in opposite positions. The electrorheological fluid 8 is composed of solid particles with high dielectric constant uniformly dispersed in insulating oil with low dielectric constant. It can undergo liquid-solid transformation under the action of an electric field. When the packaging box is transported stably, the electrode plates 9 are in a de-energized state. In an environment where the electric field strength is below the critical value, the electrorheological fluid 8 is in a liquid state. The cover base 5 can be formed and completely fit the bottom of the engine, forming a good wrapping support for the engine. A top cover is provided on the top of the box 1. By opening the top cover, the engine can be placed on the cover base 5 inside the box 1.

[0032] The inertial assembly includes a box 10 fixed to a sealing seat 4. The upper surface of the box 10 has an opening communicating with the interior of a housing 3. A sliding plate 11 is slidably connected inside the box 10, and a counterweight 12 is slidably connected to the bottom surface of the box 10. Guide rods 13 are fixed on both sides of the counterweight 12, and the two guide rods 13 pass through the side walls of both sides of the box 10. Limiting plates 14 are fixed to both guide rods 13, and the limiting plates 14 are connected to the side walls of the box 10 via a first spring 15. A spiral coil 16 is embedded in the sliding plate 11, and a permanent magnet 17 is embedded in the counterweight 12. The two ends of the spiral coil 16 are electrically connected to an electrode plate 9. Specifically, multiple sets of electrodes... In plate 9, both the positive and negative plates are connected in series with wires. The spiral coil 16 is electrically connected to the positive and negative plates respectively. When the packaging box shakes or tilts due to inertia, the counterweight 12 will slide forward or backward under the action of inertial force. When the permanent magnet 17 slides with the counterweight 12, the spiral coil 16 continuously cuts the magnetic field lines of the permanent magnet 17 to generate an induced current, which supplies power to the electrode plate 9. At this time, in an environment where the electric field strength is higher than the critical value, the electrorheological fluid 8 is solid and effectively fixes the bottom of the engine. Compared with the existing technology, the method of heating and deforming and cooling the thermosetting resin is more stable, can be deformed multiple times, has a wider range of applications, and is more flexible in use.

[0033] The box body 3 is an integral frame structure composed of Class I plywood and Class II timber. Two louvers 21, two observation windows 22 and a set of protective irons 23 are symmetrically installed on the side walls of the box body 3. Lifting rings are installed on the protective irons 23. There is a louver 21 on each side of the box body 3 to keep the air inside the packaging box in a circulating state. There is an observation window 22 on each side of the box body 3 to facilitate the observation of the actual status of the engine during engine storage. The lifting rings 1 facilitate the lifting and transportation of the packaging box.

[0034] Four latches 24 are symmetrically arranged on the side wall of the box 3. A waterproof lip is provided around the upper surface of the base 1. Four nuts 25 that match the latches 24 are fixed on the base 1 at the edge of the waterproof lip. The box 3 can be fixedly installed on the base 1 by the latches 24 and the nuts 25.

[0035] The adjustment assembly includes two limiting blocks 26 slidably disposed on the bottom surface of the housing 10. Both limiting blocks 26 are connected to the counterweight block 12 via a second spring 27. A through groove 28 is provided in each limiting block 26 for the guide rod 13 to pass through. A resistance coil 29 is disposed within the through groove 28 and spirally wound along the length of the through groove 28. A slider 30 is fixed to the portion of the guide rod 13 located within the through groove 28. The two ends of the spiral coil 16 are electrically connected to the electrode plate 9 via the slider 30 and the resistance coil 29, respectively. When the guide rod 13 slides within the through groove 28, the slider 30 and the resistance coil 29 are positioned differently. Position contact achieves the purpose of changing the resistance value of the resistor coil 29 connected to the circuit. When the counterweight 12 slides due to inertia, it drives the guide rod 13 to slide synchronously. The resistance value of the resistor coil 29 connected to the circuit can be controlled according to the sliding distance of the counterweight 12, thereby controlling the magnitude of the electric field strength between the electrode plates 9. That is, the greater the overall shaking amplitude or tilt angle of the packaging box, the greater the sliding distance of the counterweight 12, which increases the resistance value of the resistor coil 29 connected to the circuit, thereby increasing the electric field strength between the electrode plates 9. This makes the electrochemical fluid 8 change from liquid to solid faster, further improving the protection effect on the engine.

[0036] The upper end of the limiting block 26 adopts a wedge-shaped structure, and the bottom of the sliding plate 11 is provided with an inclined surface that matches the wedge-shaped structure. When the counterweight 12 slides to the limiting block 26, it will push the limiting block 26 to move. Since the bottom of the sliding plate 11 is provided with an inclined surface that matches the wedge-shaped structure of the limiting block 26, it will push the sliding plate 11 to move upward, thereby increasing the air pressure in the sealing cavity 6 and further ensuring the supporting effect of the cover base 5 on the engine.

[0037] The working principle of this invention is as follows:

[0038] Place the engine file or other documents into the file box 19, remove the tailpipe from the engine and place it into the tailpipe box 18, put the random tools into the tool box 20, fix the thermometer and hygrometer in a position that is easy to observe, put the desiccant into the base 1, and finally close the box 3 onto the base 1 and fix the box 3 to the two brackets 2 with bolts. Open the top cover of the box 3 and place the engine on the covered base 5 inside the box 3. If there are many engines to store, multiple boxes 3 can be stacked up, with no more than five layers of empty boxes and no more than three layers of packed boxes. Introduce air into the sealed cavity 6 through the air intake pipe 7 so that the covered base 5 is in contact with the bottom of the engine under air pressure. After completion, close the air intake pipe 7 through the control valve so that the sealed cavity 6 is in a sealed state.

[0039] During transportation, when the packaging box is transported smoothly, the electrode plate 9 is de-energized. In an environment where the electric field strength is below the critical value, the electrorheological fluid 8 is in a liquid state, covering the bottom support 5 and forming a complete fit with the bottom of the engine, providing good support for the engine. When the packaging box shakes or tilts due to inertia, the counterweight 12 will slide forward or backward under the action of inertial force. When the permanent magnet 17 slides with the counterweight 12, the spiral coil 16 continuously cuts the magnetic field lines of the permanent magnet 17 to generate an induced current, which powers the electrode plate 9. At this time, in an environment where the electric field strength is above the critical value, the electrorheological fluid 8 is in a solid state, effectively fixing the bottom of the engine. During transportation, when the packaging box shakes or tilts due to inertia, it avoids the engine shaking and collision, and has good stability. Furthermore, the electrorheological fluid 8 can undergo free transformation from liquid to solid under the action of an electric field. Compared with the existing technology, which uses the method of heating and deforming thermosetting resin and then cooling and fixing, it has higher stability, can be deformed multiple times, has a wider range of applications, and is more flexible in use.

[0040] When the counterweight 12 slides due to inertia, it drives the guide rod 13 to slide synchronously. The resistance value of the resistor coil 29 connected to the circuit can be controlled according to the sliding distance of the counterweight 12, thereby controlling the magnitude of the electric field strength between the electrode plates 9. That is, the greater the overall shaking amplitude or tilt angle of the packaging box, the greater the sliding distance of the counterweight 12, which increases the resistance value of the resistor coil 29 connected to the circuit, thereby increasing the electric field strength between the electrode plates 9. This makes the electrochemical fluid 8 change from liquid to solid faster, further improving the protection effect on the engine.

[0041] When the counterweight 12 slides to the limit block 26, it will push the limit block 26 to move. Since the bottom of the sliding plate 11 is provided with an inclined surface that matches the wedge structure of the limit block 26, it will push the sliding plate 11 to move upward, thereby increasing the air pressure in the sealing cavity 6 and further ensuring the support effect of the cover base 5 on the engine.

[0042] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A small aircraft engine packaging box, characterized in that, include: A base (1) on which two brackets (2) are fixedly installed; Box (3), the box (3) is fixed on the base (1), and a sealing seat (4) is fixed inside the box (3). The sealing seat (4) is installed on two brackets (2); A base plate (5) is fixed around the inner wall of the box (3). A sealing cavity (6) is formed between the base plate (5) and the sealing seat (4). An air inlet pipe (7) is provided on the side wall of the sealing cavity (6). A control valve is provided on the air inlet pipe (7). The base plate (5) is made of flexible rubber plate. A liquid cavity is opened in the base plate (5). The liquid cavity is filled with electrorheological fluid (8). Multiple sets of electrode plates (9) are arranged equidistantly in the liquid cavity. Each set of electrode plates (9) consists of two positive electrode plates and a negative electrode plate with opposite positions. An inertial assembly includes a box (10) fixed on a sealing seat (4). The upper surface of the box (10) has an opening that communicates with the inside of the box (3). A sliding plate (11) is slidably connected inside the box (10). A counterweight (12) is slidably connected to the bottom surface of the box (10). Guide rods (13) are fixed on both sides of the counterweight (12). The two guide rods (13) pass through the side walls on both sides of the box (10) respectively. Limiting plates (14) are fixed on both guide rods (13). The limiting plates (14) are connected to the side walls of the box (10) through a first spring (15). A spiral coil (16) is embedded in the sliding plate (11). A permanent magnet (17) is embedded in the counterweight (12). The two ends of the spiral coil (16) are electrically connected to the electrode plate (9) respectively.

2. The small aircraft engine packaging box according to claim 1, characterized in that, The base (1) is provided with a tail nozzle box (18), a file box (19) and a tool box (20).

3. The small aircraft engine packaging box according to claim 1, characterized in that, The box (3) has two louvers (21), two observation windows (22) and a set of protective iron (23) symmetrically installed on its side wall.

4. The small aircraft engine packaging box according to claim 1, characterized in that, Four latches (24) are symmetrically arranged on the side wall of the box (3). A waterproof lip is provided around the upper surface of the base (1). Four buckles (25) that match the latches (24) are fixed on the base (1) at the edge of the waterproof lip.

5. The small aircraft engine packaging box according to claim 1, characterized in that, It also includes an adjustment component, which includes two limiting blocks (26) slidably disposed on the bottom surface of the box (10). Both limiting blocks (26) are connected to the counterweight (12) by a second spring (27). A through groove (28) for the guide rod (13) to pass through is provided in the limiting block (26). A resistance coil (29) is provided in the through groove (28). The resistance coil (29) is spirally wound along the length of the through groove (28). A slider (30) is fixed on the part of the guide rod (13) located in the through groove (28). The two ends of the spiral coil (16) are electrically connected to the electrode plate (9) through the slider (30) and the resistance coil (29) respectively. When the guide rod (13) slides in the through groove (28), the slider (30) contacts the resistance coil (29) at different positions, thereby changing the resistance value of the resistance coil (29) connected to the circuit.

6. The small aircraft engine packaging box according to claim 5, characterized in that, The upper end of the limiting block (26) adopts a wedge-shaped structure, and the bottom of the sliding plate (11) is provided with an inclined surface that matches the wedge-shaped structure.

7. The small aircraft engine packaging box according to claim 1, characterized in that, The bottom of the base (1) is equidistantly arranged with several square timbers (31).

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