Split type thrust reverser cover and aircraft comprising split type thrust reverser cover

Abstract

A split-type thrust reverser cover and an aircraft including the split-type thrust reverser cover, the split-type thrust reverser cover being capable of expanding a space for maintenance, the split-type thrust reverser cover comprising: a main cover body being a main body portion of the split-type thrust reverser cover; the movable cover body is located at the position where the movable cover body interferes with the hanging structural part; one end of the hinge piece is connected to the main cover body, the other end of the hinge piece is connected to the movable cover body, the main cover body and the movable cover body can rotate by a certain angle around the hinge piece, and when the split type reverse thrust cover is opened till the movable cover body interferes with the hanging structural piece, the hinge piece can rotate by a certain angle. And the movable cover body rotates and moves towards one side far away from the hanging structural part by taking the hinging part as a circle center. According to the split type reverse thrust cover, the space for equipment maintenance can be expanded while the aerodynamic performance in the flying process is not affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of reverse thrust cover and aircraft, more specifically, a kind of split type reverse thrust cover and aircraft comprising the split type reverse thrust cover, which can separate the cover body of reverse thrust cover to increase the space for maintenance and repair. BACKGROUND

[0002] During the operation of the aircraft, reverse thrust refers to the movement of the moving sleeve of the reverse thrust fairing, which is driven by the hydraulic actuator, to move backward, bring up the blocker door, expose the grid section, block the passage of fan airflow flowing backward and turn to flow out from the grid section, thereby generating reverse thrust.

[0003] After the pilot opens the reverse thrust, the reverse thrust indicator light in the cockpit is on, and the moving sleeve of the reverse thrust fairing is moved backward by the hydraulic actuator. At this time, the reverse thrust fairing will move backward, bring up the blocker door to expose the grid section, block the passage of fan airflow flowing backward and turn to flow out from the grid section, thereby generating reverse thrust to achieve the purpose of slowing down the aircraft.

[0004] Since the reverse thrust fairing needs to bear a very large load during the landing of the aircraft, this functional component is subject to a high degree of wear and tear, and needs to be regularly maintained and repaired to ensure normal function during landing.

[0005] When repairing the reverse thrust fairing of the aircraft, the opening angle of the reverse thrust cover determines the maintenance space and accessibility of the components in the nacelle. Since the engine, reverse thrust device and suspension components in the nacelle are numerous and the space is limited, the maintainability is usually poor.

[0006] That is, the larger the opening angle of the reverse thrust cover, the easier it is for maintenance personnel to enter the nacelle for maintenance and inspection. However, in practice, there are many factors that limit the opening angle of the reverse thrust cover, one of the main factors being mechanical interference.

[0007] For example, as shown in Figure 6 and Figure 7 , when the previous reverse thrust cover 1' is opened, the reverse thrust hinge link as a suspension structural member 2' will interfere with the previous reverse thrust cover 1', making it impossible to open the previous reverse thrust cover 1' to a larger angle. At this time, depending on the interference of the reverse thrust hinge link, the opening angle of the previous reverse thrust cover 1' may become smaller. If the opening angle is too small, it may result in the maintenance time of some equipment not meeting the demand, and the maintenance time becoming too long, thereby causing a decline in economic efficiency.

[0008] Therefore, how to provide a reverse thrust cover that can increase the opening angle during maintenance without affecting the performance of the reverse thrust cover has become a technical problem to be solved. Utility model content

[0009] The utility model discloses to solve the technical problem of above-mentioned, its purpose is to provide a split type reverse push cover and including the split type reverse push cover of aircraft, above-mentioned split type reverse push cover can expand opening angle, to expand the space for equipment maintenance.

[0010] In order to realize the utility model's purpose, provide a split type reverse push cover, can expand the space for maintenance, above-mentioned split type reverse push cover includes: main cover body, above-mentioned main cover body is the main part of above-mentioned split type reverse push cover, movable cover body, above-mentioned movable cover body is in the position with the interference of hanging structural member, hinge piece, one end of above-mentioned hinge piece is connected to above-mentioned main cover body, the other end is connected to above-mentioned movable cover body, and above-mentioned main cover body and above-mentioned movable cover body can rotate a certain angle around above-mentioned hinge piece, when opening above-mentioned split type reverse push cover to above-mentioned movable cover body with above-mentioned hanging structural member interference, above-mentioned movable cover body rotates and moves to the side away from above-mentioned hanging structural member with above-mentioned hinge piece as the center.

[0011] According to the above-mentioned configuration, by dividing the original reverse push cover into the main cover body and the movable cover body connected by the hinge piece, the opening angle can be expanded when the reverse push cover needs to be opened, thereby the space for the operation and maintenance personnel to operate can be expanded.

[0012] Preferably, when the split type reverse push cover is in the closed position, the outer surface of the main cover body and the outer surface of the movable cover body form a continuous complete surface.

[0013] According to the above-mentioned configuration, the space for operation can be expanded without affecting the aerodynamic performance of the original aircraft.

[0014] Preferably, the hinge piece includes a hinge shaft, a movable hinge, and a fixed hinge, one end of the movable hinge is connected to the movable cover body, one end of the fixed hinge is connected to the main cover body, the other end of the movable hinge and the fixed hinge is connected to the hinge shaft in a manner that can rotate around the hinge shaft.

[0015] According to the above-mentioned configuration, the main cover body and the movable cover body can rotate relative to each other through the hinge piece, thereby the opening angle can be expanded when the movable cover body moves to the position interfering with the hanging structural member when being opened, thereby the space for equipment maintenance can be expanded.

[0016] Preferably, one end of the movable hinge and the fixed hinge respectively has a large-area mounting surface.

[0017] According to the above-mentioned configuration, the mounting strength can be improved through the large-area mounting surface, thereby the stability of the equipment is increased.

[0018] Preferably, two mounting portions are formed in one of the other end of the movable hinge and the fixed hinge, and only one mounting portion is formed in the other end.

[0019] According to the above configuration, the hinge member is configured to form two protruding portions as mounting portions in one of the other end of the movable hinge and the fixed hinge, and a connecting ring for inserting the hinge shaft is formed at the end of the two protruding portions, and to form one protruding portion as a mounting portion in the other end of the other end, and a hook pin for sleeving the hinge shaft is formed at the end of the one protruding portion, and the structure is simple.

[0020] Preferably, the hinge member further comprises a shaft sleeve, the shaft sleeve is arranged at the middle position of the hinge shaft, and two mounting portions are respectively formed in the other end of the movable hinge and the fixed hinge.

[0021] According to the above configuration, by forming two mounting portions in the other end of the movable hinge and the fixed hinge respectively, the overall structural strength of the hinge member can be increased.

[0022] Preferably, a stopper is arranged on the main cover body, and the stopper maintains the movable cover body in the closed position.

[0023] Preferably, a torsional spring is further arranged in the hinge member, and the movable cover body is maintained in the closed position by the elastic force of the torsional spring.

[0024] According to the above configuration, the movable cover body can be maintained in the closed position by the simple structure of the stopper and the torsional spring, and the structure is simple, easy to implement and convenient to operate.

[0025] Preferably, a locking structure is further arranged on the main cover body, and the movable cover body is locked in the closed position by the locking structure when the movable cover body is in the closed position.

[0026] According to the above configuration, when the movable cover body is in the closed position, the movable cover body can be locked in the closed position by the locking steel structure, and the movable cover body can be prevented from moving back and forth due to the influence of air flow during flight, thereby causing adverse effects on the aerodynamic performance during flight.

[0027] Preferably, the movable cover body is connected to the main cover body by a single or multiple hinge members.

[0028] According to the above configuration, the movable cover body can be formed to cover the entire interference area and connected to the main cover body by multiple hinge members, or formed to cover only the interference position and connected to the main cover body by a single hinge member, and the implementation is more.

[0029] In addition, the utility model also provides a kind of aircraft, above-mentioned aircraft includes split type reverser cover as described above.

[0030] According to the configuration as described above, the aircraft can expand the space for maintenance without affecting the aerodynamic performance during flight. BRIEF DESCRIPTION OF DRAWINGS

[0031] With reference to the above objects, the technical features of the utility model are clearly described in the following technical solutions, and its advantages are apparent from the following detailed description with reference to the drawings, which show the preferred embodiments of the utility model by way of example, but do not limit the scope of the utility model concept.

[0032] Figure 1 is the overall structure schematic diagram of the split type reverser cover of the utility model.

[0033] Figure 2 is the state schematic diagram when the split type reverser cover of the utility model is in closed position.

[0034] Figure 3 is the state schematic diagram when the split type reverser cover of the utility model is in open position.

[0035] Figure 4 is the overall structure schematic diagram of another form of split type reverser cover of the utility model.

[0036] Figure 5 is the structure effect schematic diagram of the split type reverser cover of the utility model.

[0037] Figure 6 is the interference schematic diagram when the reverser cover and hinge joint of the prior art are observed from one angle.

[0038] Figure 7 is the interference schematic diagram when the reverser cover and hinge joint of the prior art are observed from another angle.

[0039] SYMBOL EXPLANATION

[0040] 1 split type reverser cover;

[0041] 1' reverser cover of the prior art;

[0042] 11 main cover body;

[0043] 12 movable cover body;

[0044] 13 hinge piece;

[0045] 13a hinge shaft;

[0046] 13b movable hinge;

[0047] 13c fixed hinge;

[0048] 13d shaft sleeve;

[0049] 2, 2' hanging structure. DETAILED DESCRIPTION

[0050] Various embodiments of the present application will now be described in detail along with examples thereof. Although the present application is described in conjunction with the exemplary embodiments, it is to be noted that the present application is not intended to be limited to the exemplary embodiments but it is intended to cover various alternatives, modifications, equivalents and other embodiments that can be included within the spirit and scope of the present application as defined by the appended claims.

[0051] Hereinafter, a detailed description will be given of the overall structure of the split-type counter-impeller cover 1 of the present application with reference to the accompanying drawings. Figure 1 Hereinafter, a detailed description will be given of the overall structure of the split-type counter-impeller cover 1 of the present application with reference to the accompanying drawings. Figure 1 FIG. 1 is a schematic view showing the overall structure of the split-type counter-impeller cover 1 of the present application.

[0052] As shown in FIG. 1, the split-type counter-impeller cover 1 of the present application mainly includes a main cover body 11, a movable cover body 12, and hinge members 13. Figure 1 The main cover body 11 is a main part of the counter-impeller cover, and has a certain thickness. The movable cover body 12 is a member obtained by separating the part of the conventional counter-impeller cover which is in the interference position with the hanging structure. One end of the hinge member 13 is connected to the main cover body 11, and the other end thereof is connected to the movable cover body 12, thereby linking the main cover body 11 and the movable cover body 12 together.

[0053] Hereinafter, a detailed description will be given of the specific structure of the split-type counter-impeller cover 1 of the present application with reference to FIGS. 2 and 3.

[0054] Figure 2 Figure 3 Hereinafter, a detailed description will be given of the specific structure of the split-type counter-impeller cover 1 of the present application with reference to FIGS. 2 and 3.

[0055] As shown in FIG. 1, the split-type counter-impeller cover 1 of the present application mainly includes a main cover body 11, a movable cover body 12, and hinge members 13. Figure 2 The hinge member 13 mainly includes a hinge shaft 13a, a movable hinge 13b, and a fixed hinge 13c.

[0056] The hinge shaft 13a is formed in a substantially cylindrical shape, and is provided with the movable hinge 13b and the fixed hinge 13c. The movable hinge 13b and the fixed hinge 13c are rotatable by a certain angle about the hinge shaft 13a.

[0057]

[0058] ​​​A large mounting surface is formed at one end of the movable hinge 13b, and the mounting surface is attached to the inner surface of the movable cover 12, thereby connecting the movable hinge 13b with the movable cover 12. Two protruding parts are formed at the other end of the movable hinge 13b, and connecting rings for inserting the hinge shaft 13a are formed at the ends of the two protruding parts, thereby connecting the movable hinge 13b with the hinge shaft 13a.

[0059] A large mounting surface is formed at one end of the movable hinge 13b, and the mounting surface is attached to the inner surface of the movable cover 12, thereby connecting the movable hinge 13b with the movable cover 12. Two protruding parts are formed at the other end of the movable hinge 13b, and connecting rings for inserting the hinge shaft 13a are formed at the ends of the two protruding parts, thereby connecting the movable hinge 13b with the hinge shaft 13a.

[0060] In addition, as shown in Figure 2 The main cover 11 of the split type anti-thrust cover 1 of the utility model is provided with a stopper for maintaining the movable cover 12 at the closed position.

[0061] In the normal state, the movable cover 12 is kept at the closed position relative to the main cover 11, and the outer surface of the movable cover 12 and the outer surface of the main cover 11 are formed as a continuous complete surface.

[0062] Specifically, in the normal state, the movable cover 12 rotates towards the hanging structure 2 side with the hinge shaft 13a of the hinge 13 as the center under the action of its own gravity, and when the movable cover 12 moves to the closed position, the movable cover 12 is stopped at the closed position by the stopper, thereby facilitating the normal operation of the airplane.

[0063] Preferably, the main cover 11 further comprises a locking structure, by which the movable cover 12 can be not only stopped at the closed position, but also locked at the closed position when the movable cover 12 reaches the closed position.

[0064] In this way, the movable cover 12 can be prevented from moving back and forth with the hinge shaft 13a as the center due to the influence of air flow during the flight of the airplane, and the influence on the aerodynamic performance during flight caused by the back and forth movement of the movable cover 12 can be prevented.

[0065] As shown in Figure 3When the reverse thrust cover needs to be repaired, the reverse thrust cover is opened, the locking of the locking structure is released when the opening interferes with the hanging structural member 2, at this time, the movable cover body 12 can rotate to the side opposite to the hanging structural member 2 with the hinge shaft 13a of the hinge 13 as the center, interference between the reverse thrust cover and the hanging structural member 2 can be avoided, and the space for maintenance and repair can be expanded.

[0066] The above shows an embodiment in which the cover of the whole part interfering with the hanging structural member 2 is formed as the movable cover body 12, and the movable cover body 12 is connected to the main cover body 11 through multiple hinges 13.

[0067] However, as Figure 4 shown, another form of split reverse thrust cover of the utility model can only form the cover of a small part interfering with the hanging structural member 2 as the movable cover body 12, and connect the movable cover body 12 to the main cover body 11 through a single hinge 13.

[0068] This form of split reverse thrust cover is mainly suitable for areas with small interference or sufficient arrangement space. At this time, the size of the single hinge 13 is roughly the same as the area of the movable cover body 12.

[0069] By being thus constituted, the cover area of the movable cover body 12 can be reduced, the influence of splitting the reverse thrust cover on the aerodynamic efficiency of flight can be reduced, and since there is only one hinge 13, compared with the structure shown in Figures 1 to 3 , the cost and complexity are lower.

[0070] In addition, Figure 4 another form of hinge 13 is also shown.

[0071] Different from the hinge 13 shown in Figure 3 , in this form of hinge 13, the hinge 13 further comprises a shaft sleeve 13d, two protruding parts are formed at the other end of the fixed hinge 13c, and connecting rings for inserting the hinge shaft 13a are formed at the ends of the two protruding parts.

[0072] As shown in Figure 4 , the shaft sleeve 13d is formed in a hollow cylindrical form and is sleeved at the roughly middle position of the hinge shaft 13a, the two connecting rings of the fixed hinge 13c are sleeved in the hinge shaft 13a at positions abutting against the two ends of the shaft sleeve 13d, and the two connecting rings of the movable hinge 13b are sleeved at the positions of the two ends of the hinge shaft 13a.

[0073] By being thus constituted, two protruding parts are also formed at the other end of the fixed hinge 13c, and the structural strength of the whole hinge 13 can be improved.

[0074] (Technical Effects)

[0075] As Figure 5 shown, by the split type reverse thrust cover 1 of the utility model, when the reverse thrust cover is in the closed position, the outer surface of the movable cover body 12 and the outer surface of the main cover body 11 are formed into a continuous complete surface, which will not cause any influence on the aerodynamic performance of the airplane.

[0076] When the reverse thrust cover needs to be maintained and opened, without opening the movable cover body 12, the available maintenance space of the split type reverse thrust cover 1 of the utility model is basically the same as that of the previous reverse thrust cover, and when the movable cover body 12 is opened, the available maintenance space of the split type reverse thrust cover 1 of the utility model is obviously expanded, thereby the maintenance and maintenance of the internal cover body structure by the maintenance operator can be facilitated.

[0077] The split type reverse thrust cover 1 of the utility model not only can solve the mechanical limitation problem of the opening angle of the reverse thrust cover, but also can ensure the continuity of the aerodynamic profile when the reverse thrust cover is closed, thereby the aerodynamic efficiency of the airplane can be ensured.

[0078] Although the structure and working principle of the utility model have been described above in combination with the preferred embodiments, the ordinary skilled in the art should realize that the above examples are only used for illustration and do not constitute a limitation on the utility model. The utility model can be modified and changed within the scope of the essential spirit of the claims, and these modifications and changes will fall within the protection scope of the utility model.

[0079] For example, in the utility model, an example of maintaining the movable cover body 12 in the closed position by the stopper and the locking structure is shown, but the utility model is not limited thereto, and a torsional spring can also be arranged in the hinge 13, which keeps the movable cover body 12 in the closed position under normal circumstances, and the elastic force of the torsional spring offsets the gravity of the movable cover body 12.

[0080] In addition, when the reverse thrust cover needs to be opened, the elastic force of the torsional spring can also slow down the collision when interfering with the hanging structure 2, thereby the reverse thrust cover can be slowly opened, and the damage to the reverse thrust cover and the hanging structure can be reduced.

[0081] For example, in the utility model, an example of forming two connecting rings at the other end of the movable hinge 13b and forming a hook pin at the other end of the fixed hinge 13c is shown, but the utility model is not limited thereto, and a hook pin can also be formed at the other end of the movable hinge 13b, and two connecting rings are formed at the other end of the fixed hinge 13c, as long as the movable hinge and the fixed hinge can be installed on the hinge shaft.

[0082] However, since the other end of the movable hinge 13b is coupled to the movable cover body 12, it is necessary to withstand the pressure from the movement of the movable cover body 12, and thus it is preferable to provide two coupling rings at the other end of the movable hinge 13b, thereby being able to increase the structural strength of the hinge 13.

[0083] For example, in the present application, an example in which the two coupling rings of the fixed hinge 13c are sleeved at positions abutting against both ends of the shaft sleeve 13d, and the two coupling rings of the movable hinge 13b are sleeved at positions of both end portions of the hinge shaft 13a is shown in another form of the hinge 13, but the present application is not limited thereto, and the two coupling rings of the movable hinge 13b can be sleeved at positions abutting against both ends of the shaft sleeve 13d, and the two coupling rings of the fixed hinge 13c can be sleeved at positions of both end portions of the hinge shaft 13a.

Claims

1. A split thrust reverser cowl, the split thrust reverser cowl (1) being able to enlarge a space for maintenance, characterized in that, The split type reverse thrust cover (1) comprises: a main cover body (11) which is a main part of the split type reverse thrust cover (1); a movable cover body (12) which is in an interfering position with a hanger structure (2); a hinge (13) which is connected to the main cover body (11) at one end and to the movable cover body (12) at the other end, and around which the main cover body (11) and the movable cover body (12) can rotate, when the split type reverse thrust cover (1) is opened to the position where the movable cover body (12) interferes with the hanger structure (2), the movable cover body (12) is moved away from the hanger structure (2) by rotating around the hinge (13).

2. The split type reverse thrust cover according to claim 1, wherein when the split type reverse thrust cover (1) is in a closed position, the outer surface of the main cover body (11) and the outer surface of the movable cover body (12) form a continuous complete surface.

3. The split type reverse thrust cover according to claim 1 or 2, wherein the hinge (13) comprises a hinge shaft (13a), a movable hinge (13b) and a fixed hinge (13c), one end of the movable hinge (13b) is connected to the movable cover body (12), and one end of the fixed hinge (13c) is connected to the main cover body (11), the other end of the movable hinge (13b) and the fixed hinge (13c) is connected to the hinge shaft (13a) in a manner that can rotate around the hinge shaft (13a).

4. The split type reverse thrust cover according to claim 3, wherein there are large-area mounting surfaces at one end of the movable hinge (13b) and the fixed hinge (13c) respectively.

5. The split type reverse thrust cover according to claim 4, wherein two mounting portions are formed at one of the other end of the movable hinge (13b) and the fixed hinge (13c), and only one mounting portion is formed at the other.

6. The split type reverse thrust cover according to claim 3, wherein the hinge (13) further comprises a shaft sleeve (13d) which is arranged at the middle position of the hinge shaft (13a), two mounting portions are formed at the other end of the movable hinge (13b) and the fixed hinge (13c) respectively.

7. The split type reverse thrust cover according to claim 2, wherein a stopper is arranged on the main cover body (11) to maintain the movable cover body (12) in the closed position.

8. The split type reverse thrust cover according to claim 2, wherein a torsion spring is further arranged in the hinge (13), and the movable cover body (12) is maintained in the closed position by the elastic force of the torsion spring.

9. The split type reverse thrust cover according to claim 7 or 8, wherein a locking structure is further arranged on the main cover body (11), Locking the movable cowl (12) in the closed position by the locking structure when the movable cowl (12) is in the closed position.

10. The split thrust cowl of claim 1, wherein, The movable cowl (12) is connected to the main cowl (11) by a single or multiple articulations (13).

11. An aircraft, characterized in that The aircraft comprises a split thrust cowl (1) according to any one of claims 1 to 10.

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