A cargo floor for transport aircraft

Abstract

The present application belongs to the technical field of aircraft structure design, and particularly relates to a transport aircraft cargo floor, the cargo floor comprising a floor panel (3), a plurality of mooring rail tracks (4) and a bushing support (6), wherein the floor panel (3) is supported on a lower frame of the floor by a plurality of rows of longitudinal beam profiles (5); each mooring rail track (4) is arranged between two selected adjacent longitudinal beam profiles (5), and a mooring rail (2) is installed thereon; the bushing support (6) is fixed on the selected longitudinal beam profile (5), and a plurality of bushing supports (6) are arranged in a row, wherein each mooring rail (2) has a mooring row composed of a plurality of bushing supports (6) on both sides, and each bushing support (6) is installed with a threaded bushing (1). The present application can select the required cargo system equipment according to the conditions of the cargo to be transported, so as to realize flexible transportation and loading and unloading of the cargo. The cargo floor is light in weight, simple in structure, easy to install, has good maintainability and strong adaptability.

Description

Technical Field

[0001] The present application belongs to the technical field of aircraft structure design, and in particular relates to a cargo floor for a transport aircraft. Background Art

[0002] The cargo floor is an important load-bearing component of transport aircraft, and it is also an important functional component. It is covered with cargo system interfaces. The cargo system is installed to ultimately achieve cargo loading and unloading and transportation, ensuring the configuration, delivery, mooring and locking of cargo in the aircraft cargo hold. In order to meet the above requirements, existing aircraft often set up complex cargo system interfaces according to different cargo systems. The cargo system interfaces lack versatility and flexibility, adding a lot of redundant weight while also affecting the economy of the aircraft. In addition, as a functional component, the cargo floor is prone to accidental damage due to frequent use, and needs to have good maintainability and safety. Summary of the invention

[0003] In order to solve the above problems, the present application provides a transport aircraft freight floor to achieve rapid loading and unloading of the freight system.

[0004] The transport aircraft cargo floor provided in this application mainly includes:

[0005] A floor panel, the floor panel being supported on a lower floor frame by a plurality of rows of longitudinal beam profiles;

[0006] A plurality of tie-down rail tracks, each of which is arranged between two selected adjacent longitudinal beam profiles, a tie-down rail is installed above each of the tie-down rail tracks, and the tie-down rail has a track groove formed on the upper surface of the floor panel;

[0007] The bushing support is fixed on the selected longitudinal beam profile, and a plurality of bushing supports are arranged in a row, wherein each mooring slide rail has a mooring row composed of a plurality of bushing supports on both sides, and each bushing support is installed with a threaded bushing.

[0008] Preferably, the threaded bushing has an internal thread and an external thread, the bushing support has an internal thread, the external thread of the threaded bushing is cooperatively connected with the internal thread of the bushing support, and the internal thread of the threaded bushing is used to connect the freight system equipment.

[0009] Preferably, the threaded surface of the threaded bushing and / or bushing support is provided with an anti-stick coating.

[0010] Preferably, the anti-stick coating comprises ion-plated aluminum or surface-coated aluminum.

[0011] Preferably, the bushing support is a box body structure with edge strips on all sides, a threaded hole structure with internal threads is formed on the upper edge strip of the box body structure, the lower edge strip of the box body structure is fixed to the lower frame of the floor, and the vertical edge strips of the box body on both sides of the box body structure are connected to the longitudinal beam web of the longitudinal beam profile.

[0012] Preferably, the groove bottom edge strip of the track groove of the mooring slide rail is fixed to the track upper edge strip of the mooring slide rail track by bolts.

[0013] Preferably, the track groove of the mooring slide rail is a strip groove, and a mooring interface with arc-shaped expansion on both sides of the groove is formed at a set interval on the strip groove.

[0014] Preferably, the mooring slide rail and the longitudinal beam profile are both formed by processing aluminum alloy extrusion profiles.

[0015] The application can select the required freight system equipment according to the conditions of the transported goods to realize flexible transportation and loading and unloading of goods. The freight floor itself is light in weight, simple in structure, easy to install, has good maintainability and strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top view of the floor of a preferred embodiment of the freight floor of the transport aircraft of the present application.

[0017] Figure 2 This application Figure 1 AA cross-sectional structural schematic diagram of the embodiment shown.

[0018] Figure 3 This application Figure 2 An enlarged schematic diagram of the structure at point B of the illustrated embodiment.

[0019] Figure 4 This application Figure 2 Schematic diagram of the threaded bushing structure of the illustrated embodiment.

[0020] Figure 5 This application Figure 2 Schematic diagram of the bushing support structure of the illustrated embodiment.

[0021] Figure 6 This application Figure 2 Top view of the tie-down rail of the illustrated embodiment.

[0022] Figure 7 This application Figure 6 AA cross-sectional structural diagram of the tethered slide rail of the illustrated embodiment.

[0023] Figure 8 This is a schematic diagram of the freight system equipment installed on the freight floor of the transport aircraft in this application.

[0024] Among them, 1-threaded bushing, 2-mooring slide rail, 21-track groove, 22-groove bottom edge strip, 23-mooring interface, 3-floor panel, 4-mooring slide rail, 41-track upper edge strip, 5-longitudinal beam profile, 51-longitudinal beam web, 6-bushing support, 61-box upper edge strip, 62-box lower edge strip, 63-box vertical edge strip, 100-freight system equipment, 200-mooring rope. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the implementation of this application clearer, the technical scheme in the implementation of this application will be described in more detail in combination with the drawings in the implementation of this application. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described implementation is a part of the implementation of this application, not all of the implementations. The implementation described below with reference to the drawings is exemplary and is intended to be used to explain this application, and cannot be understood as a limitation on this application. Based on the implementation in this application, all other implementations obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The implementation of this application is described in detail below in combination with the drawings.

[0026] The present application provides a transport aircraft freight floor, such as Figure 1-Figure 3 As shown, it mainly includes:

[0027] A floor panel 3, the floor panel 3 being supported on the lower floor frame by a plurality of rows of longitudinal beam profiles 5;

[0028] A plurality of mooring rail tracks 4, each of which is arranged between two selected adjacent longitudinal beam profiles 5, and a mooring rail 2 is installed above each mooring rail track 4, wherein the mooring rail 2 has a track groove 21 formed on the upper surface of the floor panel 3;

[0029] The bushing support 6 is fixed on the selected longitudinal beam profile 5, and multiple bushing supports 6 are arranged in rows, wherein each mooring slide rail 2 has a mooring row composed of multiple bushing supports 6 on both sides, and each bushing support 6 is installed with a threaded bushing 1.

[0030] The floor panel of the present application forms multiple rows of tethered rails 2 and threaded bushings 1, and the multiple rows of tethered rails 2 and the multiple rows of threaded bushings 1 are arranged at intervals. Figure 8 The left and right sides of the cargo system device 100 can be tied to the track groove 21 by a tie rope 200 or a tie chain, and the front and rear sides of the cargo system device 100 can be fixed to the threaded bushing 1 by a tie rope or a tie chain. The cargo system device 100 can be installed between adjacent tie rails 2, or can span multiple tie rails.

[0031] In some optional embodiments, such as Figure 4 and Figure 5 As shown, the threaded bushing 1 has an internal thread and an external thread, the bushing support 6 has an internal thread, the external thread of the threaded bushing 1 is matched and connected with the internal thread of the bushing support 6, and the internal thread of the threaded bushing 1 is used to connect the freight system equipment 100.

[0032] In some optional embodiments, the threaded surface of the threaded bushing 1 and / or the bushing support 6 is provided with an anti-stick coating.

[0033] In this embodiment, the threaded bushing 1 and the bushing support 6 are generally made of stainless steel, and the adhesion of stainless steel threads is a common problem in engineering practice. In order to prevent the two threads from sticking and being difficult to disassemble and assemble during long-term use, certain measures need to be taken during manufacturing and installation. First, when processing the threads, ensure the processing accuracy and surface quality. The thread surface is coated with an anti-stick coating. In some optional embodiments, the anti-stick coating includes ion-plated aluminum or surface aluminum coating. When the threads are installed, lubrication measures can also be taken to prevent thread adhesion, such as coating with molybdenum disulfide.

[0034] In some optional embodiments, reference Figure 3 and Figure 5 The bushing support 6 is a box structure with edge strips on all sides, a threaded hole structure with internal threads is formed on the upper edge strip 61 of the box structure, the lower edge strip 62 of the box structure is fixed to the lower frame of the floor, and the vertical edge strips 63 of the box structure on both sides are connected to the longitudinal beam web 51 of the longitudinal beam profile 5.

[0035] In this embodiment, the upper edge strip 61 of the box body provides local support for the floor panel 3. The load transmitted by the cargo through the cargo system will be directly transmitted to the longitudinal beam profile 5 of the floor and the lower frame of the floor through the threaded bushing 1 and the bushing support 6.

[0036] In some optional embodiments, such as Figure 3 As shown, the groove bottom edge strip 22 of the track groove 21 of the mooring slide rail 2 is fixed to the track upper edge strip 41 of the mooring slide rail track 4 by bolts.

[0037] In some optional embodiments, reference Figure 6 and Figure 7 The track groove 21 of the mooring slide rail 2 is a strip groove, and a mooring interface 23 with arc-shaped expansion on both sides of the groove is formed at a set interval on the strip groove.

[0038] In this embodiment, the mooring rail 2 has strong versatility and flexibility. The mooring rail 2 has multiple mooring interfaces 23. When used as a cargo mooring point interface, a detachable mooring ring can be installed at any mooring interface 23 according to the location of the mooring point. The mooring rail 2 can be used as an interface for a cargo guide device-detachable roller system, and can also be used as a pallet installation interface. When transporting personnel, the mooring rail 2 is used as a seat rail interface, and can also be used as a connection interface for various product equipment such as a stretcher station and a medical workbench.

[0039] In some optional embodiments, the mooring rail track 4 and the longitudinal beam profile 5 are both formed by aluminum alloy extrusion profiles. In this embodiment, the mooring rail 2 is processed by aluminum alloy / titanium alloy thick plate or extrusion profiles according to the load requirements.

[0040] In the alternative implementation, the mooring rail 2, the floor panel 3, the mooring rail track 4 and the longitudinal beam profile 5 can be reasonably divided into sections and blocks according to the actual situation and then assembled. The mooring rail 2 and the threaded bushing 1 are the main interfaces of the freight system. If they are damaged during frequent use, they can also be quickly replaced. If the floor panel 3 is damaged in daily use, it can also be conveniently repaired or even replaced.

[0041] The cargo floor of the present application has two universal cargo system interfaces, a threaded bushing and a mooring rail. The internal thread of the threaded bushing can be used to install detachable mooring equipment, cargo guide equipment, arresting equipment, etc. of the cargo system according to the needs of use. The mooring rail has multiple mooring interfaces to achieve universal connection of different cargo system equipment.

[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 transport aircraft cargo floor, characterized in that: include: A floor panel (3), the floor panel (3) being supported on a lower floor frame via a plurality of rows of longitudinal beam profiles (5); A plurality of mooring slide rails (4), each mooring slide rail (4) being arranged between two selected adjacent longitudinal beam profiles (5), a mooring slide rail (2) being installed above each mooring slide rail (4), the mooring slide rail (2) having a track groove (21) formed on the upper surface of the floor panel (3); A bushing support (6) is fixed on the selected longitudinal beam profile (5), and a plurality of bushing supports (6) are arranged in a row, wherein each mooring slide rail (2) has a mooring row composed of a plurality of bushing supports (6) on both sides, and a threaded bushing (1) is installed on each bushing support (6); The threaded bushing (1) has an internal thread and an external thread, the bushing support (6) has an internal thread, the external thread of the threaded bushing (1) is matched and connected with the internal thread of the bushing support (6), and the internal thread of the threaded bushing (1) is used to connect the freight system equipment (100).

2. The cargo floor of a transport aircraft according to claim 1, characterized in that: The threaded surface of the threaded bushing (1) and / or the bushing support (6) is provided with an anti-stick coating.

3. The cargo floor of a transport aircraft according to claim 2, characterized in that: The anti-stick coating includes ion-plated aluminum or surface-coated aluminum.

4. The cargo floor of a transport aircraft according to claim 1, characterized in that: The bushing support (6) is a box structure having edge strips on all sides, a threaded hole structure having internal threads is formed on an upper box edge strip (61) of the box structure, a lower box edge strip (62) of the box structure is fixed to the lower frame of the floor, and vertical box edge strips (63) on both sides of the box structure are connected to the longitudinal beam web (51) of the longitudinal beam profile (5).

5. The transport aircraft cargo floor according to claim 1, characterized in that: The groove bottom edge strip (22) of the track groove (21) of the mooring slide rail (2) is fixed to the track upper edge strip (41) of the mooring slide rail track (4) by means of bolts.

6. The cargo floor of a transport aircraft according to claim 1, characterized in that: The track groove (21) of the mooring slide rail (2) is a strip groove, and a mooring interface (23) with arc-shaped expansion on both sides of the groove opening is formed at a set interval on the strip groove.

7. The cargo floor of a transport aircraft according to claim 1, characterized in that: The mooring slide rail track (4) and the longitudinal beam profile (5) are both formed by processing aluminum alloy extruded profiles.

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