Air intake and exhaust reed for aircraft engine of unmanned aerial vehicle

Abstract

The utility model belongs to the technical field of air intake and exhaust reeds in fuel aero-engines and installation operation of the air intake and exhaust reeds, and particularly relates to an air intake and exhaust reed of an unmanned aerial vehicle. Air inlet and outlet holes are formed in the top of the reed at equal intervals; fixing holes are formed in the positions, close to the long edge of one side, of the top of the reed at equal intervals in a penetrating mode; the air inlet and outlet holes are uniformly distributed between openings of the fixing holes; a first elastic clamping piece can be installed on the side, provided with the fixing hole, of the reed. The side, away from the first insertion block, of the top of the first elastic clamping piece is fixedly connected with an installation piece. A second elastic clamping piece can also be installed on the side, provided with the fixing hole, of the reed. The outer side face, away from the second insertion block, of the second elastic clamping piece is fixedly connected with a connecting plate. Through cooperative operation of the reed, the first elastic clamping piece and the second elastic clamping piece, rapid installation of the reed in spaces with different installation sizes is achieved, and damage to other parts of an engine caused by the broken reed is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of an intake and exhaust reed for an unmanned aerial vehicle (UAV) aero-engine and its installation operation, in particular to an intake and exhaust reed for a UAV aero-engine. Background Art

[0002] An unmanned aerial vehicle, abbreviated as "UAV", is an unpiloted aircraft controlled by radio remote control equipment and self-prepared program control devices. There is no cockpit on the aircraft, but devices such as an autopilot and a program control device are installed. Personnel on the ground, on a ship or at a mother aircraft remote control station track, position, remotely control, remotely measure and digitally transmit it through equipment such as radar;

[0003] When preparing a UAV, a small internal combustion engine is used as the power. During the operation of the internal combustion engine, a reed exhaust valve is installed above the exhaust port. An eccentric wheel shaft with a heart crank is installed in the cylinder. The rotation center of the eccentric wheel shaft coincides with the center of the inner hole of the cylinder. A rolling piston is installed on the eccentric crank, that is, the rolling piston is concentric with the eccentric crank, so that the outer surface of the rolling piston is tangent to the inner surface of the cylinder. Thus, a crescent-shaped space is formed between the inner surface of the cylinder and the outer surface of the rolling piston, and its two ends are sealed by the cylinder head to form the working chamber of the compressor;

[0004] After the fuel aero-engine has worked for a long time, the phenomenon of internal shrapnel breakage will occur, and the broken shrapnel will cause damage to other parts of the engine, affecting the normal use of other structures of the engine; Therefore, an intake and exhaust reed for a UAV aero-engine is proposed for the above problems. Content of the Utility Model

[0005] In order to make up for the deficiencies of the prior art and solve the problem that the broken shrapnel in the fuel aero-engine causes damage to other parts of the engine, the utility model proposes an intake and exhaust reed for a UAV aero-engine.

[0006] The technical solution adopted by the utility model to solve its technical problems is: an intake and exhaust reed for a UAV aero-engine described in the utility model includes a reed; intake and exhaust holes are equidistantly opened at the top of the reed; the intake and exhaust holes penetrate through the body of the reed; there is a 45° cut at one corner of the reed; fixing holes are equidistantly penetrated and opened at a position near one long side at the top of the reed; the opening position of the fixing holes is near the long side on the side of the cut; the intake and exhaust holes are evenly distributed between the opening ports of the fixing holes; the material of the reed is thermosetting epoxy resin; it can intercept the possibly broken shrapnel.

[0007] Further, a first elastic clip can be installed on the side of the reed where the fixing hole is provided; a first clamping cavity is enclosed between the first elastic clips; a first insertion block is fixedly connected at equal intervals on the inner wall top structural surface of the first clamping cavity; the first insertion block can be inserted into the interior of the fixing hole; facilitating the fixing of the reed on the first elastic clip.

[0008] Further, an installation piece is fixedly connected to the side of the top of the first elastic clip away from the first insertion block; a first through hole is penetrated and opened on the side body of the first elastic clip close to the first insertion block; facilitating the installation of the reed.

[0009] Further, a second elastic clip can also be installed on the side of the reed where the fixing hole is provided; a second clamping cavity is enclosed inside the second elastic clip; a second insertion block is fixedly connected at equal intervals on the inner wall top structural surface of the second clamping cavity; the second insertion block can be inserted into the interior of the fixing hole; facilitating the fixing of the reed on the second elastic clip.

[0010] Further, a connecting plate is fixedly connected to the outer side surface of the second elastic clip away from the second insertion block; three rows of limiting holes are opened at equal intervals on the connecting plate; the first insertion block can be inserted into the interior of the limiting hole; the width of the connecting plate is equal to the inner width of the first clamping cavity; the enclosed height inside the first clamping cavity and the second clamping cavity is the same; the thickness of the connecting plate is the same as the thickness of the reed; enabling the reed to be suitable for installation in different-sized spaces.

[0011] Further, a second through hole is penetrated and opened on the side body of the second elastic clip away from the connecting plate; the opening size of the second through hole is the same as the opening size of the first through hole; the opening diameter of the limiting hole is the same as the opening diameter of the fixing hole; ensuring the smooth operation of the auxiliary installation component.

[0012] Further, a third elastic clip is installed on the installation piece; a third insertion block is fixedly connected to the inner wall surface of the vertical plate body of the third elastic clip; the third insertion block is inserted into the structural hole of the installation piece; a fourth elastic clip is arranged at the top of the third elastic clip; a fourth insertion block is fixedly connected to the inner wall of the vertical plate of the fourth elastic clip; the fourth insertion block can also be inserted into the structural hole of the installation piece; the cross-sectional diameters of the third insertion block and the fourth insertion block are the same; ensuring the stacked installation of the installation piece.

[0013] Further, limiting pieces are installed on both sides of the third elastic clip and the fourth elastic clip; limiting grooves are opened at equal intervals on the piece body of the limiting piece; the opening height of the limiting groove is the same as the thickness of the horizontal plates of the third elastic clip and the fourth elastic clip; a fixing piece is fixedly connected to the end of the limiting piece; a clamping hole is penetrated and opened on the fixing piece; enabling the free adjustment of the distance between the third elastic clip and the fourth elastic clip.

[0014] Furthermore, a fifth elastic clip is externally clamped on the fixing piece; a clamping block is fixedly connected to the inner wall structural surface of the clamping cavity of the fifth elastic clip; the clamping block can be inserted into the inside of the clamping hole; the fifth elastic clips are connected by a mounting plate; mounting holes are equidistantly arranged on the plate body of the mounting plate; facilitating the stacking and installation of multiple reed pieces.

[0015] The beneficial effects of the present utility model are as follows:

[0016] Through the structural design of the reed piece, the first elastic clip and the second elastic clip, the present utility model can clamp the second elastic clip outside the reed piece, and the second insertion block is inserted into the fixing hole. At this time, the opening position of the second through port does not affect the air intake and exhaust effects of the air intake and exhaust holes. Then, the first elastic clip is clamped outside the connecting plate. According to the spatial dimensions of the installation position, the first insertion block is inserted into the limiting hole at a suitable position, and the reed piece is fixed by the mounting piece, realizing the rapid installation of the reed piece in different installation size spaces and facilitating the replacement of the reed piece. Once the phenomenon of shrapnel fragmentation occurs inside the fuel aviation engine, the reed piece can block the splashing and movement of the fragmented shrapnel, preventing the fragmented shrapnel from damaging other parts of the engine and ensuring the safety of other structures inside the engine; at the same time, with the cooperation of the third elastic clip, the fourth elastic clip and the fifth elastic clip, the stacking combination of multiple reed pieces is achieved, facilitating the rapid progress of the installation operation and avoiding the simultaneous replacement of the entire component, saving the input cost. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a structural schematic diagram of the reed piece;

[0019] Figure 2 It is a structural schematic diagram of the installation position of the first elastic clip;

[0020] Figure 3 It is a structural schematic diagram of the first elastic clip;

[0021] Figure 4 It is a structural schematic diagram of the installation positions of the first elastic clip and the second elastic clip;

[0022] Figure 5 It is a structural schematic diagram of the connection state between the second elastic clip and the reed piece;

[0023] Figure 6 It is a schematic structural diagram of the second elastic clip;

[0024] Figure 7 It is a schematic structural diagram of a stacked assembly of multiple reed pieces;

[0025] Figure 8 It is a schematic structural diagram of the auxiliary installation component;

[0026] Figure 9 It is a schematic structural diagram of the installation positions of the limiting piece and the fifth elastic clip;

[0027] Figure 10 It is a schematic structural diagram of the third elastic clip and the fourth elastic clip.

[0028] In the figure: 1, reed piece; 2, air inlet and outlet holes; 3, fixing holes; 4, first elastic clip; 5, first clamping cavity; 6, first insertion block; 7, first through hole; 8, mounting piece; 9, second elastic clip; 10, second clamping cavity; 11, second insertion block; 12, second through hole; 13, connecting plate; 14, limiting hole; 15, third elastic clip; 16, third insertion block; 17, fourth elastic clip; 18, fourth insertion block; 19, limiting piece; 20, limiting groove; 21, fixing piece; 22, clamping hole; 23, fifth elastic clip; 24, clamping block; 25, mounting plate; 26, mounting hole. Specific embodiments

[0029] 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 making creative efforts belong to the scope of protection of the present invention.

[0030] Please refer to Figures 1-5 As shown, an air inlet and outlet reed piece for an unmanned aerial vehicle engine includes a reed piece 1; air inlet and outlet holes 2 are equidistantly arranged at the top of the reed piece 1; the air inlet and outlet holes 2 penetrate through the body of the reed piece 1; there is a 45° notch at one corner of the reed piece 1; fixing holes 3 are equidistantly penetrated and opened at a position near one long side at the top of the reed piece 1; the opening positions of the fixing holes 3 are near the long side on the side of the notch; the air inlet and outlet holes 2 are evenly distributed between the opening ports of the fixing holes 3; the material of the reed piece 1 is thermosetting epoxy resin;

[0031] A first elastic clip 4 can be installed on the side of the reed piece 1 where the fixing holes 3 are opened; a first clamping cavity 5 is enclosed between the first elastic clips 4; first insertion blocks 6 are equidistantly fixedly connected to the inner wall top structural surface of the first clamping cavity 5; the first insertion blocks 6 can be inserted into the interior of the fixing holes 3;

[0032] On one side of the top of the first elastic clip 4 away from the first insertion block 6, a mounting piece 8 is fixedly connected; on the side of the first elastic clip 4 close to the first insertion block 6, a first through hole 7 is penetrated and opened on the body of the clip;

[0033] During operation, the first elastic clip 4 is clamped outside the reed 1, and the first insertion block 6 is inserted into the fixing hole 3. At this time, the opening position of the first through hole 7 does not affect the air intake and exhaust effects of the air intake and exhaust holes 2, and the reed 1 is fixed by using the mounting piece 8, which facilitates the installation operation of the reed and avoids the broken elastic piece from damaging other parts of the engine.

[0034] On the side of the reed 1 where the fixing hole 3 is opened, a second elastic clip 9 can also be installed; a second clamping cavity 10 is enclosed inside the second elastic clip 9; on the structural surface of the inner wall top of the second clamping cavity 10, second insertion blocks 11 are fixedly connected at equal intervals; the second insertion blocks 11 can be inserted into the inside of the fixing hole 3;

[0035] On the outer side surface of the second elastic clip 9 away from the second insertion block 11, a connecting plate 13 is fixedly connected; three rows of limiting holes 14 are opened on the connecting plate 13 at equal intervals; the first insertion block 6 can be inserted into the inside of the limiting holes 14; the width of the connecting plate 13 is equal to the inner width of the first clamping cavity 5; the enclosed heights inside the first clamping cavity 5 and the second clamping cavity 10 are the same; the thickness of the connecting plate 13 is the same as the thickness of the reed 1;

[0036] On the side of the second elastic clip 9 away from the connecting plate 13, a second through hole 12 is penetrated and opened on the body of the clip; the opening size of the second through hole 12 is the same as the opening size of the first through hole 7; the opening diameter of the limiting holes 14 is the same as the opening diameter of the fixing hole 3;

[0037] During operation, if the installation space size is larger, the second elastic clip 9 can be clamped outside the reed 1, and the second insertion blocks 11 are inserted into the fixing holes 3. At this time, the opening position of the second through hole 12 does not affect the air intake and exhaust effects of the air intake and exhaust holes 2. Then, the first elastic clip 4 is clamped outside the connecting plate 13, and according to the space size of the installation position, the first insertion block 6 is inserted into the limiting holes 14 at the appropriate position, realizing the rapid installation of the reed 1 in different installation size spaces and facilitating the replacement of the reed.

[0038] Please refer to Figures 7-10 As shown, a third elastic clip 15 is installed on the mounting piece 8; on the inner wall surface of the vertical plate body of the third elastic clip 15, a third insertion block 16 is fixedly connected; the third insertion block 16 is inserted into the structural hole of the mounting piece 8; on the top of the third elastic clip 15, a fourth elastic clip 17 is provided; on the inner wall of the vertical plate of the fourth elastic clip 17, a fourth insertion block 18 is fixedly connected; the fourth insertion block 18 can also be inserted into the structural hole of the mounting piece 8; the cross-sectional diameters of the third insertion block 16 and the fourth insertion block 18 are the same;

[0039] Limit pieces 19 are installed on both sides of the third elastic clip 15 and the fourth elastic clip 17; limiting grooves 20 are equidistantly formed on the body of the limit piece 19; the height of the limiting groove 20 is the same as the thickness of the transverse plates of the third elastic clip 15 and the fourth elastic clip 17; a fixing piece 21 is fixedly connected to the end of the limit piece 19; a card hole 22 is formed through the fixing piece 21;

[0040] A fifth elastic clip 23 is clamped outside the fixing piece 21; a clamping block 24 is fixedly connected to the inner wall structural surface of the clamping cavity of the fifth elastic clip 23; the clamping block 24 can be inserted into the inside of the card hole 22; the fifth elastic clips 23 are connected by a mounting plate 25; mounting holes 26 are equidistantly formed on the body of the mounting plate 25;

[0041] During operation, according to the usage requirements and safety standards, multiple reed pieces 1 need to be installed in a stacked manner. Select the assembled reed pieces 1, the first elastic clip 4 and the second elastic clip 9 assembly, select the third elastic clip 15 and the fourth elastic clip 17, insert the No. 3 insertion block 16 and the No. 4 insertion block 18 into the structural holes on different mounting pieces 8 respectively. Subsequently, according to the installation requirements, use the fixing piece 21 to insert the third elastic clip 15 and the fourth elastic clip 17 into the limiting grooves 20 at different positions on the limit piece 19 respectively. Then, use the mounting plate 25 to insert the fixing piece 21 into the corresponding fifth elastic clips 23 respectively, and insert the clamping block 24 into the card hole 22, achieving the stacked combination of multiple reed pieces 1, facilitating the rapid progress of the installation operation, and since the structural components are all detachable, it also facilitates the rapid replacement of a damaged component subsequently, avoiding the simultaneous replacement of the entire component and saving the input cost.

[0042] Working principle: After a fuel aviation engine has been operating for a long time, internal shrapnel may break, and the broken shrapnel can damage other parts of the engine and affect the normal use of other structures of the engine. In this application, the reed 1, the first elastic clip 4, and the second elastic clip 9 cooperate. The first elastic clip 4 is clamped outside the reed 1, and the first insertion block 6 is inserted into the fixing hole 3. At this time, the opening position of the first through hole 7 does not affect the intake and exhaust effects of the intake and exhaust holes 2, and the reed 1 is fixed by the mounting piece 8. If the installation space is larger, the second elastic clip 9 can be clamped outside the reed 1, and the second insertion block 11 is inserted into the fixing hole 3. At this time, the opening position of the second through hole 12 does not affect the intake and exhaust effects of the intake and exhaust holes 2. Then, the first elastic clip 4 is clamped outside the connecting plate 13, and according to the space size of the installation position, the first insertion block 6 is inserted into the limiting hole 14 at a suitable position, realizing the rapid installation of the reed 1 in different installation size spaces and facilitating the replacement of the reed. Once shrapnel breaks inside the fuel aviation engine, the reed 1 can block the splashing and movement of the broken shrapnel, preventing the broken shrapnel from damaging other parts of the engine and ensuring the safety of other structures inside the engine.

[0043] According to the usage requirements and safety standards, when multiple reeds 1 need to be installed in a stacked manner, an assembled component of the reed 1, the first elastic clip 4, and the second elastic clip 9 can be selected. The third elastic clip 15 and the fourth elastic clip 17 are selected, and the third insertion block 16 and the fourth insertion block 18 are respectively inserted into the structural holes on different mounting pieces 8. Subsequently, according to the installation requirements, using the fixing piece 21, the inserted third elastic clip 15 and the fourth elastic clip 17 are respectively inserted into the limiting grooves 20 at different positions on the limiting piece 19. Then, the fixing piece 21 is respectively inserted into the corresponding fifth elastic clips 23 by using the mounting plate 25, and the clamping block 24 is inserted into the clamping hole 22, achieving the stacked combination of multiple reeds 1, facilitating the rapid progress of the installation operation, and since the structural components are all detachable, it also facilitates the rapid replacement of a damaged component subsequently, avoiding the simultaneous replacement of the entire component and saving the input cost.

[0044] In the description of this specification, the description referring to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0045] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed.

Claims

1. An air intake and exhaust reed for a UAV engine, characterized by: The invention comprises a reed (1); the top of the reed (1) is provided with air inlet and outlet holes (2) at equal intervals; the air inlet and outlet holes (2) penetrate the body of the reed (1); a 45° cut is provided at one corner of the reed (1); fixing holes (3) are provided at equal intervals at the top of the reed (1) near one long side; the fixing holes (3) are provided at positions close to the long side of the cut; the air inlet and outlet holes (2) are evenly distributed between the openings of the fixing holes (3); the material of the reed (1) is a thermosetting epoxy resin.

2. The UAV engine intake and exhaust reed according to claim 1, characterized in that: A first elastic clip (4) can be installed on the side of the spring sheet (1) where the fixing hole (3) is opened; a first clamping cavity (5) is enclosed between the first elastic clips (4); a first insertion block (6) is fixedly connected at equal distances to the top structural surface of the inner wall of the first clamping cavity (5); the first insertion block (6) can be inserted into the interior of the fixing hole (3).

3. The UAV engine intake and exhaust reed according to claim 2, characterized in that: A mounting plate (8) is fixedly connected to the top of the first elastic clip (4) on one side away from the first insertion block (6); and a first through hole (7) is formed through the first elastic clip (4) on one side close to the first insertion block (6).

4. The UAV engine intake and exhaust reed according to claim 3, characterized in that: A second elastic clip (9) may also be installed on the side of the spring sheet (1) where the fixing hole (3) is opened; a second clamping cavity (10) is enclosed inside the second elastic clip (9); a second insertion block (11) is fixedly connected to the top structural surface of the inner wall of the second clamping cavity (10) at equal distances; the second insertion block (11) can be inserted into the fixing hole (3).

5. The UAV engine intake and exhaust reed according to claim 4, characterized in that: A connecting plate (13) is fixedly connected to the outer surface of the second elastic clip (9) away from the second insertion block (11); three rows of limiting holes (14) are equidistantly provided on the connecting plate (13); the first insertion block (6) can be inserted into the inside of the limiting holes (14); the width of the connecting plate (13) is equal to the internal width of the first clamping cavity (5); the enclosed height of the first clamping cavity (5) and the second clamping cavity (10) is the same; the thickness of the connecting plate (13) is the same as the thickness of the spring leaf (1).

6. The UAV engine intake and exhaust reed according to claim 5, characterized in that: A second through hole (12) is formed through the second elastic clip (9) on the side away from the connecting plate (13); the opening size of the second through hole (12) is the same as the opening size of the first through hole (7); and the opening diameter of the limiting hole (14) is the same as the opening diameter of the fixing hole (3).

7. The UAV engine intake and exhaust reed according to claim 6, characterized in that: A third elastic clip (15) is mounted on the mounting plate (8); a third insertion block (16) is fixedly connected to the inner wall surface of the vertical plate body of the third elastic clip (15); the third insertion block (16) is inserted into the structural hole of the mounting plate (8); a fourth elastic clip (17) is arranged on the top of the third elastic clip (15); a fourth insertion block (18) is fixedly connected to the inner wall surface of the vertical plate of the fourth elastic clip (17); the fourth insertion block (18) can also be inserted into the structural hole of the mounting plate (8); the cross-sectional diameters of the third insertion block (16) and the fourth insertion block (18) are the same.

8. The UAV engine intake and exhaust reed according to claim 7, characterized in that: Limiting plates (19) are installed on both sides of the third elastic clip (15) and the fourth elastic clip (17); limiting grooves (20) are arranged at equal intervals on the body of the limiting plate (19); the opening height of the limiting grooves (20) is the same as the thickness of the cross plate of the third elastic clip (15) and the fourth elastic clip (17); a fixing plate (21) is fixedly connected to the end of the limiting plate (19); and a clamping hole (22) is penetrated through the fixing plate (21).

9. The UAV engine intake and exhaust reed according to claim 8, characterized in that: The fixing plate (21) is provided with a fifth elastic clip (23) on its exterior; a clamping block (24) is fixedly connected to the inner wall structure surface of the clamping cavity of the fifth elastic clip (23); the clamping block (24) can be inserted into the inside of the clamping hole (22); the fifth elastic clips (23) are connected via a mounting plate (25); and mounting holes (26) are equidistantly provided on the body of the mounting plate (25).

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