Multifunctional rear sealing gate of heavy conveyor

Abstract

The invention belongs to the field of airplane design, and particularly relates to a multifunctional rear sealing gate of a heavy conveyor, which comprises a cabin door, a sealing door and an inclined platform, the cabin door is located at the tail of the airplane, and the sealing doors are located on an inclined table on the inner side of the cabin door and comprise the upper sealing door and the lower sealing door. One end of the upper sealing door is hinged above the exit of the cargo hold through a first rotating shaft, and the other end of the upper sealing door is provided with a second rotating shaft; a control device is arranged on the second rotating shaft and used for connecting the upper sealing door and the lower sealing door and driving the lower sealing door to rotate around the second rotating shaft or unlocking the lower sealing door so that the lower sealing door can be separated from the upper sealing door. A control device is arranged on the third rotating shaft and used for connecting and locking the inclined table and the lower sealing door and driving the lower sealing door to rotate around the third rotating shaft or unlocking the lower sealing door to be separated from the inclined table.

Description

Technical Field

[0001] The present application belongs to the field of aircraft design, and in particular relates to a multifunctional rear sealed door of a heavy transport aircraft. Background Art

[0002] Conventional transport aircraft sealed doors are a whole flip-up type, with crane rails on both sides of the sealed door. When the sealed door is flipped up and flattened, its upper hanging rails can be docked with the hanging rails in the cargo hold and at the rear of the sealed door to form a crane operation channel. However, this sealed door requires the cargo hold to be of equal width from top to bottom, or in order to ensure that the sealed door can be flipped up, the width of the sealed door is compressed, resulting in a smaller net width at the sealed door, affecting the loading or airdrop channel.

[0003] The design method of a whole flip-up sealed door is not suitable for the pear-shaped (narrow at the top and wide at the bottom) cargo hold section of heavy transport aircraft, because the upper part is narrow, and the sealed door of the same width as the cargo hold cannot be flipped up. The conventional heavy transport aircraft sealed door design retains the onboard crane, but the airdrop capability cannot be taken into account at the same time. The present invention proposes a multifunctional large sealed door design method, which realizes the compatibility of the lifting and airdrop functions of the rear sealed door of the heavy transport aircraft. Summary of the invention

[0004] In order to solve the above problems, the present application provides a multifunctional rear sealed door for a heavy-duty transport aircraft, comprising:

[0005] Hatch doors, sealing doors and ramps;

[0006] The cabin door is located at the tail of the aircraft, and the sealed door is located on the ramp inside the cabin door.

[0007] The sealing door comprises: an upper sealing door and a lower sealing door; one end of the upper sealing door is hinged above the cargo hold exit through a first rotating shaft, and the other end has a second rotating shaft; one end of the ramp is retracted around a fixed shaft at the end of the cargo hold, and the other end has a third rotating shaft;

[0008] Wherein, a control device is provided on the second rotating shaft, and the control device is used to connect the upper sealing door and the lower sealing door and drive the lower sealing door to rotate around the second rotating shaft or unlock the lower sealing door to separate it from the upper sealing door;

[0009] The third rotating shaft is provided with a control device, which is used to connect and lock the inclined platform and the lower sealing door and drive the lower sealing door to rotate around the third rotating shaft or unlock the lower sealing door to separate it from the inclined platform.

[0010] Preferably, the control device of the lower sealing door includes a locking device and a driving device, the locking device fixedly connects or separates the second rotating shaft from the lower sealing door, and the driving device drives the second rotating shaft to rotate relative to the upper sealing door; the control device of the inclined platform includes a locking device and a driving device, the locking device fixedly connects or separates the third rotating shaft from the lower sealing door, and the driving device drives the third rotating shaft to rotate relative to the inclined platform.

[0011] Preferably, the doors include: a middle door, a left door and a right door; the middle door is connected to the fuselage above by a middle door driving rod, the left door is connected to the fuselage through a left door driving rod, and the right door is connected to the fuselage through a right door driving rod.

[0012] Preferably, there is an onboard crane on the top of the cargo hold, and the onboard crane reciprocates along the heading crane slide rail on the top of the cargo hold.

[0013] Preferably, the door frames at both sides of the upper sealed door are provided with a right fixed airtight section and a left fixed airtight section respectively.

[0014] Preferably, it has multiple functional states, including a sealed door fully closed state, an airdrop state, a ground hoisting state, and a ground self-loading state.

[0015] Preferably, when the sealing door is in a fully closed state, the lower sealing door rotates around the third rotating shaft, the lower sealing door presses on the upper sealing door from outside to inside, and the cabin door is closed.

[0016] Preferably, in the airdrop state, the middle door is driven by the middle door driving rod to slide upward and backward to open, the left door and the right door are driven by the left door driving rod and the right door driving rod to flip outward to open, the ramp is driven by the ramp hydraulic rod to flip downward and flatten around the ramp axis, and the lower sealing door is flipped outward and upward around the second axis to flatten.

[0017] Preferably, when in the ground hoisting state, the middle door is driven by the middle door driving rod to slide upward and backward to open, the left door and the right door are driven by the left door driving rod and the right door driving rod to flip outward and open, the ramp is driven by the ramp hydraulic rod to flip downward to the maximum angle around the ramp axis, the lower sealed door flips outward and downward around the third axis and then continues to flip forward to lie on the ramp, and the upper sealed door flips outward and upward around the first axis to be flat.

[0018] The advantages of the present application include: the present invention solves the problem of decoupling the lifting and airdrop functions of the rear door of a heavy transport aircraft with a pear-shaped extra-wide cargo hold on the sealed door, solves the contradiction between the self-support capability and the airdrop capability of the heavy transport aircraft, greatly improves the mission capability of the heavy transport aircraft, and has very broad application prospects and significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a side view of the multifunctional rear sealed door of a heavy-duty transport aircraft in a fully closed state.

[0020] Figure 2 This is a rear view of the multifunctional rear sealed door of a heavy-duty transport aircraft in a fully closed state.

[0021] Figure 3This is a side view of the heavy transport aircraft's multifunctional rear sealed door in airdrop status.

[0022] Figure 4 This is the rear view of the heavy transport aircraft's multifunctional rear sealed door in airdrop status.

[0023] Figure 5 It is a side view of the multifunctional rear sealed door of a heavy-duty transport aircraft when it is hoisted on the ground.

[0024] Figure 6 This is the rear view of the multifunctional rear sealed door of a heavy-duty transport aircraft when it is hoisted on the ground.

[0025] Figure 7 It is a side view of the multifunctional rear sealed door of a heavy-duty transport aircraft in the state of ground self-loading.

[0026] Figure 8 It is a stereoscopic diagram of the multifunctional rear sealed door of a heavy transport aircraft in the ground self-loading state.

[0027] Fig. 9 It is a stereoscopic image of the heavy transport aircraft's multifunctional rear sealed door in the airdrop state.

[0028] Among them, 1-upper sealing door, 2-lower sealing door, 3-right fixed airtight section, 4-left fixed airtight section, 5-onboard crane, 6-inclined platform, 7-crew cabin floor, 8-middle cabin door, 9-toe plate, 10-cargo cabin floor, 11-middle cabin door driving rod (left), 12-middle cabin door driving rod (right), 13-left cabin door, 14-right cabin door, 15-left cabin door driving rod, 16-right cabin door driving rod, 17-inclined platform hydraulic rod (left), 18-inclined platform hydraulic rod (right). DETAILED DESCRIPTION

[0029] In order to make the technical solution and advantages of the present application clearer, the technical solution of the present application will be further described in detail in detail and in detail with reference to the accompanying drawings. It can be understood that the specific embodiments described here are only partial embodiments of the present application, which are only used to explain the present application, not to limit the present application. It should be noted that, for the convenience of description, only the parts related to the present application are shown in the accompanying drawings, and other related parts can refer to the general design. In the absence of conflict, the embodiments in the present application and the technical features in the embodiments can be combined with each other to obtain new embodiments.

[0030] like Figure 1-Figure 9 As shown, the present application provides a multifunctional rear sealed door for a heavy transport aircraft, comprising: a cabin door, a sealed door and a ramp 6;

[0031] The cabin door is located at the belly of the aircraft tail, and the sealed door is located at the cargo hold exit inside the cabin door;

[0032] The doors include a middle door 8, a left door 13 and a right door 14; the middle door 8 is connected to the fuselage via a middle door driving rod, the left door 13 is connected to the fuselage via a left door driving rod 15, and the right door 14 is connected to the fuselage via a right door driving rod 16. An onboard crane 5 is provided on the top of the cargo hold, and the onboard crane 5 reciprocates along the heading crane slide rail on the top of the cargo hold.

[0033] The sealing door comprises: an upper sealing door 1 and a lower sealing door 2; one end of the upper sealing door 1 is hinged above the cargo hold exit through a first rotating shaft a, and the other end has a second rotating shaft b; one end of the ramp 6 is retracted around a fixed shaft at the end of the cargo hold, and the other end has a third rotating shaft c; the door frames at both sides of the upper sealing door 1 are respectively provided with a right-side fixed airtight section 3 and a left-side fixed airtight section 4.

[0034] The second rotating shaft b is provided with a control device, which is used to connect the upper sealing door 1 and the lower sealing door 2 and drive the lower sealing door 2 to rotate around the second rotating shaft b or unlock the lower sealing door 2 to separate it from the upper sealing door 1;

[0035] The third rotating shaft c is provided with a control device, which is used to connect and lock the inclined platform 6 and the lower sealing door 2 and drive the lower sealing door 2 to rotate around the third rotating shaft c or unlock the lower sealing door 2 to separate it from the inclined platform 6.

[0036] Preferably, the control device of the lower sealing door 2 includes a locking device and a driving device, the locking device fixedly connects or separates the second rotating shaft b from the lower sealing door 2, and the driving device drives the second rotating shaft b to rotate relative to the upper sealing door 1; the control device of the inclined platform 6 includes a locking device and a driving device, the locking device fixedly connects or separates the third rotating shaft c from the lower sealing door 2, and the driving device drives the third rotating shaft c to rotate relative to the inclined platform 6.

[0037] The multifunctional rear sealed door of the heavy-duty transport aircraft of the present application has multiple functional states, including a sealed door fully closed state, an airdrop state, a ground hoisting state, and a ground self-loading state.

[0038] The sealed door is fully closed, as shown in the attached Figure 1-Figure 2 The right fixed airtight section 3 and the left fixed airtight section 4 are fixedly connected to the sealing door frame, and the lower sealing door 2 is pressed on the upper sealing door 1 from outside to inside around the rotating shaft 3.

[0039] Airdrop status, as attached Figure 3-Figure 4 The middle door 8 is driven by the middle door driving rod (left) 11 and the middle door driving rod (right) 12 to slide upward and backward to open, the left door 13 and the right door 14 are driven by the left door driving rod 15 and the right door driving rod 16 to flip outward and open, the ramp 6 is driven by the ramp hydraulic rod (left) 17 and the ramp hydraulic rod (right) 18 to flip downward and flatten around the ramp rotation axis, and the lower sealing door 2 is flipped outward and upward around the second rotation axis b to be flattened.

[0040] Ground hoisting status, as shown in the attached Figure 5-Figure 6 The middle door 8 is driven by the middle door driving rod (left) 11 and the middle door driving rod (right) 12 to slide upward and backward to open, the left door 13 and the right door 14 are driven by the left door driving rod 15 and the right door driving rod 16 to flip outward and open, the ramp 6 is driven by the ramp hydraulic rod (left) 17 and the ramp hydraulic rod (right) 18 to flip downward around the ramp rotation axis to the maximum angle, the lower sealing door 2 flips outward and downward around the third rotation axis c and then continues to flip forward to lie on the ramp 6, and the upper sealing door 1 flips outward and upward around the first rotation axis a to be flat.

[0041] Ground self-loading state, as attached Figure 7-Figure 8 The middle door 8 is driven by the middle door driving rod (left) 11 and the middle door driving rod (right) 12 to slide upward and backward to open, the left door 13 and the right door 14 are driven by the left door driving rod 15 and the right door driving rod 16 to flip outward and open, the ramp 6 is driven by the ramp hydraulic rod (left) 17 and the ramp hydraulic rod (right) 18 to flip downward to the maximum angle around the ramp rotation axis, the lower sealed door 2 flips outward and downward around the third rotation axis c and grounds to the ground, and during the flipping process of the lower sealed door 2, its rear toe plate 9 unfolds outward around its rotation axis and grounds together with the sealed door 2, and the upper sealed door 1 flips outward and upward around the first rotation axis a and is flattened.

[0042] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A multifunctional rear sealed door for a heavy-duty transport aircraft, characterized in that: include: Hatch doors, sealing doors and ramps (6); The cabin door is located at the tail of the aircraft, and the sealed door is located on the ramp inside the cabin door. The sealing door comprises: an upper sealing door (1) and a lower sealing door (2); one end of the upper sealing door (1) is hinged above the cargo hold exit through a first rotating shaft (a), and the other end has a second rotating shaft (b); one end of the ramp (6) is retractable around a fixed shaft at the end of the cargo hold, and the other end has a third rotating shaft (c); The second rotating shaft (b) is provided with a control device, which is used to connect the upper sealing door (1) and the lower sealing door (2) and drive the lower sealing door (2) to rotate around the second rotating shaft (b) or unlock the lower sealing door (2) to separate it from the upper sealing door (1); The third rotating shaft (c) is provided with a control device, which is used to connect and lock the inclined platform (6) and the lower sealing door (2) and drive the lower sealing door (2) to rotate around the third rotating shaft (c) or unlock the lower sealing door (2) to separate it from the inclined platform (6).

2. The multifunctional rear sealed door for heavy-duty transport aircraft as claimed in claim 1, characterized in that: The control device of the lower sealed door (2) comprises a locking device and a driving device, wherein the locking device fixedly connects or separates the second rotating shaft (b) from the lower sealed door (2), and the driving device drives the second rotating shaft (b) to rotate relative to the upper sealed door (1); the control device of the inclined platform (6) comprises a locking device and a driving device, wherein the locking device fixedly connects or separates the third rotating shaft (c) from the lower sealed door (2), and the driving device drives the third rotating shaft (c) to rotate relative to the inclined platform (6).

3. The multifunctional rear sealed door for heavy-duty transport aircraft as claimed in claim 1, characterized in that: The doors include: a middle door (8), a left door (13) and a right door (14); the middle door (8) is connected to the body via a middle door driving rod, the left door (13) is connected to the body via a left door driving rod (15), and the right door (14) is connected to the body via a right door driving rod (16).

4. The multifunctional rear sealed door for heavy-duty transport aircraft as claimed in claim 1, characterized in that: An onboard crane (5) is provided on the top of the cargo hold, and the onboard crane (5) reciprocates along a heading crane slide rail on the top of the cargo hold.

5. The multifunctional rear sealed door for heavy-duty transport aircraft as claimed in claim 1, characterized in that: The door frames at both sides of the upper sealed door (1) are respectively provided with a right fixed airtight section (3) and a left fixed airtight section (4).

6. The multifunctional rear sealed door for heavy-duty transport aircraft as claimed in claim 1, characterized in that: It has multiple functional states, including fully closed state of sealed doors, airdrop state, ground hoisting state, and ground self-loading state.

7. The multifunctional rear sealed door for heavy-duty transport aircraft as claimed in claim 6, characterized in that: When the sealing door is in a fully closed state, the lower sealing door (2) rotates around the third rotating shaft (3), and the lower sealing door (2) presses on the upper sealing door (1) from the outside to the inside, and the cabin door is closed.

8. The multifunctional rear sealed door for heavy-duty transport aircraft as claimed in claim 5, characterized in that: In the airdrop state, the middle door (8) is driven by the middle door driving rod to slide upward and backward to open, the left door (13) and the right door (14) are driven by the left door driving rod (15) and the right door driving rod (16) to flip outward and open, the inclined platform (6) is driven by the inclined platform hydraulic rod to flip downward around the inclined platform rotation axis and flatten, and the lower sealing door (2) is flipped outward and upward around the second rotation axis (b) and flattened.

9. The multifunctional rear sealed door for heavy-duty transport aircraft as claimed in claim 5, characterized in that: When in the ground hoisting state, the middle door (8) is driven by the middle door driving rod to slide upward and backward to open, the left door (13) and the right door (14) are driven by the left door driving rod (15) and the right door driving rod (16) to flip outward and open, the inclined platform (6) is driven by the inclined platform hydraulic rod to flip downward around the inclined platform rotation axis to the maximum angle, the lower sealing door (2) flips outward and downward around the third rotation axis (c) and then continues to flip forward to lie on the inclined platform (6), and the upper sealing door (1) flips outward and upward around the first rotation axis (a) to be flat.

10. The multifunctional rear sealed door for heavy-duty transport aircraft as claimed in claim 5, characterized in that: When the vehicle is in the self-loading state on the ground, the middle door (8) is driven by the middle door driving rod to slide upward and backward to open, the left door (13) and the right door (14) are driven by the left door driving rod (15) and the right door driving rod (16) to flip outward and open, the ramp (6) is driven by the ramp hydraulic rod to flip downward around the ramp rotation axis to the maximum angle, the lower sealing door (2) flips outward and downward around the third rotation axis (c) to touch the ground, and the upper sealing door (1) flips outward and upward around the first rotation axis (a) to flatten.

11. The multifunctional rear sealed door for heavy-duty transport aircraft as claimed in claim 10, characterized in that: The lower sealed door (2) is provided with a hinged toe plate (9). During the turning process of the lower sealed door (2), the lower toe plate (9) is spread outward around its rotation axis and is grounded together with the sealed door (2).

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