Aircraft cargo system limit device

Abstract

A limiting device for an aircraft cargo system, used to secure a pallet loaded with cargo, includes: a guide rail, the guide rail being elongated and its long side perpendicular to the central axis of the aircraft; and a left and right securing assembly, each having multiple securing devices. These multiple securing devices are inclined relative to the guide rail and rotatable relative to it. The limiting device further includes an anti-misloading component, detachably inserted into the guide rail at a position adjacent to and above the bottom ends of the multiple securing devices. This aircraft cargo system limiting device effectively prevents the securing devices from being accidentally pressed down during pallet loading.

Description

Technical Field

[0001] This utility model relates to a limiting device for an aircraft cargo system, and more specifically, to a limiting device for an aircraft cargo system mainly used in civil aircraft cargo systems. Background Technology

[0002] Civil aircraft often need to transport cargo, therefore, the aircraft cargo system is an important component of civil aircraft. The limiting device of the aircraft cargo system is used to secure the cargo inside the aircraft cabin.

[0003] like Figure 5 As shown, cargo aircraft typically use pallets 2 to load cargo 3, and use fasteners to secure the pallets 2 to the aircraft's hold, thereby securing the cargo 3 within the cargo hold.

[0004] The commonly used fixing device integrates multiple fixing devices into a single guide rail to secure container plates 2 of different sizes. This fixing device is then fixed in approximately the center of the aircraft cabin to ensure the stability of the aircraft's center of gravity.

[0005] For example, conventional aircraft cargo system limiting devices 1' mainly include left and right symmetrical fixing components 11' and right fixing components 12'. Through the cooperation of the left fixing components 11' and right fixing components 12', the container plate 2 can be fixed to the guide rail DG' of the fixing device, and thus fixed in the cargo hold of the aircraft.

[0006] Since the left fixator assembly 11' and the right fixator assembly 12' are symmetrical, the following explanation will mainly focus on the right fixator assembly 12', and will not elaborate on the left fixator assembly 11'.

[0007] Specifically, such as Figure 6 As shown, the conventional aircraft cargo system limiting device 1' includes a left retainer assembly 11', a right retainer assembly 12', a guide rail DG', and a pin XZ'. The left retainer assembly 11' includes a left first retainer, a left second retainer, and a left third retainer. The right retainer assembly 12' includes a right first retainer 121', a right second retainer 122', and a right third retainer 123'. Each retainer in the left retainer assembly 11' and the right retainer assembly 12' is fixed to the guide rail DG' by the pin XZ'.

[0008] By coordinating the left and right fixing devices, the left and right fixing devices, and the left and right fixing devices, the symmetrical fixing of container plates of three different widths can be achieved.

[0009] like Figure 6As shown, in the non-use state, due to the elastic force of the spring, each of the retainers in the left retainer assembly 11' and the right retainer assembly 12' remains in the upright state.

[0010] In addition, such as Figure 7 As shown, in the right retainer assembly 12', the right first retainer 121' and the right second retainer 122' also include a guide shuttle DXS'.

[0011] When you want to use the left third fastener and the right third fastener to load a large container pallet 2, first, place the container pallet 2 on top of the right first fastener 121' and the right second fastener 122', and then push the cargo 3 in relative to the container pallet 2.

[0012] During the process of pushing in the cargo 3, due to the weight of the cargo 3, the container plate 2, through the guide shuttle DXS' of the right first fixing device 121' and the right second fixing device 122', overcomes the elastic force of the spring and presses the right first fixing device 121' and the right second fixing device 122' downward until the uppermost end of the fixing device is flush with the upper surface of the guide rail DG', thereby restricting the container plate 2 between the left third fixing device and the right third fixing device.

[0013] However, when loading small-sized pallets, for example, when using left and right clamps to load pallets, there is a problem that the left or right clamp may be accidentally pressed down when pushing the pallet in, resulting in the small-sized pallet being mistakenly loaded into a larger clamp.

[0014] Currently, manual inspection is used to ensure that the fasteners are properly erected. However, since manual inspection becomes inconvenient after the goods are pushed in, there is a risk that the fasteners may not be properly erected, which could lead to the risk that the container plate 2 is not reliably secured.

[0015] In addition, such as Figure 8 As shown, in addition to the guide shuttle DXS', the right first retainer 121' and right second retainer 122' in the right retainer assembly 12' also include a clamping part KYB' and an abutting part DJB'. The clamping part KYB' is used to clamp the upper surface of the container plate when it is loaded, thereby preventing the container plate from shifting in the vertical direction. The abutting part DJB' is used to contact the side surface of the container plate when it is loaded, thereby preventing the container plate from shifting in the length direction of the guide rail DG'.

[0016] However, the contact part DJB' of the fastener is prone to wear due to prolonged contact with the side surface of the container plate. This wear will increase the distance between the two fasteners used in conjunction. This increased distance will further lead to the container plate being unsecured and shifting in position. Furthermore, the container plate may generate additional impact loads on the contact part due to changes in the aircraft's movement, which will further aggravate the wear of the contact part and ultimately lead to the problem of not being able to securely fasten the container plate.

[0017] Previously, when the fasteners wore out and severely affected the securing of the container plates, the only solution was to manually replace the fasteners, which was time-consuming and costly.

[0018] In view of the shortcomings of the existing technology, how to provide a limiting device for aircraft cargo systems to prevent the fixing device from being accidentally pressed down when loading the container pallet has become an urgent technical problem to be solved. Utility Model Content

[0019] This disclosure is made to solve the above-mentioned technical problems, and its purpose is to provide a limiting device for an aircraft cargo system. During the loading process, the limiting device can prevent unspecified fasteners from being accidentally pressed down when loading the container pallet, and can also effectively solve the problem that the container pallet cannot be firmly fixed due to wear of the abutment part of the fastener.

[0020] To achieve the purpose of this disclosure, an aircraft cargo system limiting device is provided for securing a container pallet loaded with cargo. The device includes: a guide rail, which is elongated and whose long side is perpendicular to the central axis of the aircraft; a left retainer assembly and a right retainer assembly, each having multiple retainers. These multiple retainers are inclined relative to the guide rail and are mounted on the guide rail in a rotatable manner relative to it. The aircraft cargo system limiting device also includes an anti-misloading component, which is detachably inserted into the guide rail at a position adjacent to and above the bottom ends of the multiple retainers.

[0021] As described above, this anti-misinstallation component can limit the bottom end of the fixture, thereby preventing the fixture from rotating toward the lowering position under the action of external force, which would lead to the misinstallation of the container plate.

[0022] Preferably, a mating groove for receiving the anti-misinstallation component is formed at the position corresponding to the anti-misinstallation component in one of the plurality of fasteners.

[0023] As described above, by matching the groove in the retainer with the shape of the anti-misloading component, the position of the retainer can be effectively limited, thereby preventing misloading of the container plate.

[0024] Preferably, the plurality of retainers in the left retainer assembly and the plurality of retainers in the right retainer assembly are arranged symmetrically along the long side of the guide rail.

[0025] As described above, by arranging multiple retainers symmetrically along the guide rail, it is possible to prevent the aircraft's center of gravity from being affected by the installation of the aircraft cargo system limiting device, thereby effectively ensuring flight performance.

[0026] Preferably, a clearance portion is formed at the position corresponding to the plurality of retainers in the guide rail, so that the plurality of retainers can be clearance portioned until the upper surface of the plurality of retainers is flush with the upper surface of the guide rail.

[0027] As described above, when installing a large-sized container, the fixing device located within the coverage area of ​​the container can be pressed downward into the clearance portion, thereby effectively installing and limiting the large-sized container.

[0028] Preferably, it also includes an eccentric bushing, which is installed between the guide rail and the plurality of retainers, and translates the plurality of retainers toward the center position in the long side direction of the guide rail.

[0029] Preferably, one end of the eccentric bushing is fixedly installed on the guide rail, and the other end is formed into a hollow cylinder, with the inner circle center of the hollow cylinder located closer to the center position than the outer circle center.

[0030] As described above, by compensating for the eccentricity of the eccentric bushing, wear caused by the contact between the retainer and the container plate can be effectively compensated, thereby securing the container plate in place.

[0031] Preferably, the plurality of retainers includes guide shuttles, which are symmetrically arranged on both sides of the plurality of retainers in the short side direction of the guide rail, and their outer surfaces are formed as arc surfaces.

[0032] As described above, by setting a guide shuttle and forming its outer surface into an arc surface, the fixture can be pressed downwards to the lowered position under the action of the gravity of the cargo, thereby facilitating the loading of large-sized container pallets.

[0033] Preferably, the aforementioned fasteners are formed in exactly the same shape.

[0034] As described above, by forming multiple fasteners into identical shapes, manufacturing and installation are facilitated, operation is simple, and economic costs are low.

[0035] Preferably, a retainer is provided at both ends of the guide rail along the long side, which is vertically positioned relative to the guide rail.

[0036] As described above, by providing a retainer at the end, large-sized container pallets can be loaded effectively.

[0037] Preferably, the plurality of the above-mentioned fasteners include a clamping portion that extends obliquely downward from the upper end of the plurality of the above-mentioned fasteners.

[0038] According to the configuration described above, by providing a clamping part, the upper surface of the container plate can be clamped when loading the container plate, thereby restricting the vertical displacement of the container plate. Attached Figure Description

[0039] With reference to the above objectives, the technical features of this utility model are clearly described in the following technical solutions, and its advantages are apparent from the following detailed description with reference to the accompanying drawings, which illustrate preferred embodiments of this utility model by way of example, without limiting the scope of the inventive concept.

[0040] Figure 1 This is a schematic diagram of the overall structure of the right half of the limiting device for the aircraft cargo system of this utility model.

[0041] Figure 2 This is a side cross-sectional view of the right half of the limiting device of the aircraft cargo system of this utility model.

[0042] Figure 3 This is a schematic diagram of the assembly structure of the eccentric bushing of the limiting device for the aircraft cargo system of this utility model.

[0043] Figure 4 This is a three-dimensional structural diagram of the eccentric bushing of the limiting device for the aircraft cargo system of this utility model.

[0044] Figure 5 This is a schematic diagram of the overall structure of a traditional air cargo system.

[0045] Figure 6 This is a schematic diagram of the retaining device of a conventional aircraft cargo system in the upright position.

[0046] Figure 7 This is a schematic diagram of the retainer of the limiting device in the previous aircraft cargo system when it is in the lowered position.

[0047] Figure 8This is a schematic diagram of the overall structure of the rightmost retainer of the limiting device in a previous aircraft cargo system. Symbol Explanation

[0048] 1.1' Aircraft cargo system limit device; 11' Left Fixator Assembly; 12, 12' right fixator assembly; 121, 121' rightmost fixator; 122' Right Second Fixator; 123, 123' right third fixation device; FWZJ anti-misinstallation component; PXCT eccentric bushing; DG, DG' guide rails; BRB (Breakpoint Reduction Bracket) GDJ fasteners; GDK mounting holes; AZK mounting holes; O1 is the center of the inner circle; O2 outer circle center; XZ and XZ' pins; DXS, DXS' guide shuttle; KYB, KYB' crimping part; DJB, DJB's landing section; 2. Container pallets; 3. Goods. Detailed Implementation

[0049] Various embodiments of the present invention will now be described in detail, examples of which are shown in the accompanying drawings.

[0050] Although this invention has been described in conjunction with exemplary embodiments, it should be understood that this specification is not intended to limit the invention to the exemplary embodiments described below. Rather, the invention is intended to cover not only these exemplary embodiments, but also various alternatives, modifications, equivalents, and other embodiments that may be included within the spirit and scope of the invention as defined by the appended claims.

[0051] The following is for reference Figure 1 The overall structure of the limiting device 1 for the aircraft cargo system of this utility model will be described. Figure 1 This is a schematic diagram showing the overall structure of the right half of the limiting device 1 of the aircraft cargo system of this utility model.

[0052] As described above, similar to conventional pallet holders, the limiting device 1 of the aircraft cargo system of this utility model mainly includes a left holder assembly, a right holder assembly, a guide rail, and a pin.

[0053] Since the left and right retainer assemblies are symmetrical about the center of the guide rail, the following explanation will mainly focus on the right retainer assembly, and will not go into too much detail about the left retainer assembly.

[0054] like Figure 1 As shown, the right retainer assembly 12 includes a right first retainer 121, a right second retainer 122, and a right third retainer 123. The right first retainer 121 and the right second retainer 122 are formed in the same shape and are set at a certain angle relative to the guide rail DG. The right third retainer 123 is set at the end of the guide rail and is set vertically relative to the guide rail DG.

[0055] The aforementioned guide rail DG is formed into a long strip shape, and left and right retainer assemblies are symmetrically installed on the long side of the guide rail DG. Through the mechanical cooperation of the left first retainer and right first retainer, the left second retainer and right second retainer, and the left third retainer and right third retainer, three different width sizes of container plates can be loaded on the top of the guide rail DG.

[0056] In addition, the aforementioned guide rail DG is usually configured such that its long side is perpendicular to the central axis of the aircraft and is symmetrical about the left and right sides relative to the central axis, so as to prevent the aircraft's center of gravity from being affected by the installation of the aircraft cargo system limit device 1, thereby effectively ensuring the safety performance of the aircraft.

[0057] The aforementioned right first retainer 121 and right second retainer 122 are mounted on the guide rail DG via pin XZ in a manner that allows them to rotate relative to the guide rail DG. Furthermore, a torsion spring (not shown) is installed between the right first retainer 121 and right second retainer 122 and pin XZ. Through the elastic force of the torsion spring, the right first retainer 121 and right second retainer 122 can be maintained in an upright state when not in use.

[0058] The aforementioned right-side fixing device 123 is fixedly installed at the edge end of the guide rail DG by fixing pins and always remains in an upright state, thereby limiting the movement of large-sized container plates.

[0059] Furthermore, a clearance portion BRB, which serves as a notch, is formed at the position corresponding to the right first retainer 121 and the right second retainer 122 on the guide rail DG. When installing a large-sized container plate, the right first retainer 121' and the right second retainer 122' can be pressed downward into the clearance portion BRB, thereby ensuring that its upper surface is flush with the upper surface of the guide rail DG, so that the large-sized container plate can be limited by the right third retainer 123.

[0060] As described above Figure 8Similarly, the right retainer 121' in the conventional aircraft cargo system limiting device 1' shown also mainly includes a guide shuttle DXS, a clamping part KYB and an abutment part DJB.

[0061] The aforementioned guide shuttle DXS is disposed on the left and right sides of the right first fixture 121, and its outer surface is formed as an arc surface, which can press the right first fixture 121 down to the lowered position under the action of the gravity of the cargo via the arc surface.

[0062] The aforementioned clamping part KYB extends diagonally downward from the upper end of the right-hand retainer 121. When loading small-sized container plates, it can clamp the upper surface of the container plate, thereby restricting the vertical displacement of the container plate.

[0063] The aforementioned abutment portion DJB is formed between the left and right guide shuttles DXS. When the container plate is loaded, it contacts the side surface of the container plate, thereby limiting the displacement of the container plate in the length direction of the guide rail DG.

[0064] The clamping part KYB and the abutment part DJB described above can securely hold the container plate between the left and right retainers, thereby fixing the container plate to the guide rail.

[0065] Furthermore, a mounting groove and a pin mounting hole are formed in the lower part of the right retainer 121. A torsion spring (not shown) is provided in the mounting groove to maintain the right retainer 121 at a specific tilt angle, and the pin XZ mounts the right retainer 121 to the guide rail DG in a rotatable manner via the mounting hole.

[0066] Return to Figure 1 In addition to the same components as conventional pallet holders, the aircraft cargo system limiting device 1 of this utility model also includes an anti-misloading component FWZJ and an eccentric bushing PXCT.

[0067] The following is for reference Figures 2 to 4 The specific structure and function of the anti-misloading component FWZJ and the eccentric bushing PXCT of the limiting device 1 for the aircraft cargo system of this utility model are described.

[0068] like Figure 2 As shown, the aforementioned anti-misinstallation component FWZJ is formed in the form of a bolt and is inserted into the guide rail DG at a position adjacent to the bottom end of the right first fixing device 121 and the right second fixing device 122.

[0069] By inserting the anti-misinstallation component FWZJ into the guide rail DG, the bottom ends of the right first retainer 121 and the right second retainer 122 can be limited, thereby preventing the right first retainer 121 and the right second retainer 122 from rotating toward the lowered position under the action of external force.

[0070] In addition, mating grooves (not shown) can be formed at the positions corresponding to the anti-misinstallation component FWZJ in the right first retainer 121 and the right second retainer 122. The shape of the mating groove is formed to receive the anti-misinstallation component FWZJ and to fit the shape of the anti-misinstallation component FWZJ, thereby effectively limiting the position of the right first retainer 121 and the right second retainer 122.

[0071] like Figure 3 As shown, the eccentric bushing PXCT is installed between the right first retainer 121 and the guide rail DG. One end of PXCT is fixedly installed on the guide rail DG via the fastener GDJ, and the other end is connected to the eccentric bushing PXCT, the right first retainer 121 and the guide rail DG via the pin XZ.

[0072] The following is for reference Figure 4 The specific structure and working principle of the aforementioned eccentric bushing PXCT will be explained in detail.

[0073] like Figure 4 As shown, a fixing hole GDK is formed at one end of the eccentric bushing PXCT. The eccentric bushing PXCT is fixedly installed on the guide rail DG by inserting a fixing screw or other fastener GDJ into the fixing hole GDK. A hollow cylinder protruding from the surface of the eccentric bushing PXCT is formed at the other end of the eccentric bushing PXCT. A mounting hole AZK is formed in the cylinder. The right fastener 121 is connected to the guide rail DG in a rotatable manner by inserting a pin XZ into the mounting hole AZK and the pin mounting hole of the right fastener 121.

[0074] It should be noted that in this eccentric bushing PXCT, the inner circle center O1 of the mounting hole AZK and the outer circle center O2 of the cylinder are not at the same position. The inner circle center O1 is located to the right of the retainer 121, which is further to the right than the eccentric bushing PXCT. The distance between the inner circle center O1 and the outer circle center O2 is also called the eccentricity of the eccentric bushing PXCT.

[0075] Furthermore, a groove is formed in the guide rail DG, extending from the position corresponding to the outer circle center O2 of the eccentric bushing PXCT, along the long side of the guide rail DG toward the center of the guide rail DG, so as to accommodate the installation requirements of eccentric bushings PXCT with different eccentricities.

[0076] With this configuration, after the eccentric bushing PXCT is fixedly installed on the guide rail DG via the fixing hole GDK, the right retainer 121 can be moved toward the center position of the guide rail DG by the aforementioned eccentricity distance, thereby compensating for the wear caused by the contact between the abutment part DJB and the container plate, and by using eccentric bushings with different eccentricities, different compensation amounts can be achieved. (Technical effect)

[0077] (1) The limiting device of the aircraft cargo system of this utility model is provided with anti-misinstallation bolts for the left first and left second fixers of the left fixer assembly and the right first and right second fixers of the right fixer assembly. When the desired eccentric bushing is to be loaded, by inserting the corresponding eccentric bushing, it can be ensured that the non-specific fixer will not be pressed down by the misinstalled container plate, thereby ensuring the effective fixation of the container plate. In addition, the anti-misinstallation bolt also has the advantages of being lightweight, simple in structure and easy to modify.

[0078] (2) In addition, the limiting device of the aircraft cargo system of this utility model also uses an eccentric bushing to connect the left first and left second fixings and the right first and right second fixings to the guide rail. According to the wear of the fixings, by selecting eccentric bushings with different eccentric amounts, the wear can be compensated, thereby improving the service life of the fixings.

[0079] Although the structure and working principle of this utility model have been described above in conjunction with preferred embodiments, those skilled in the art should recognize that the above examples are merely illustrative and do not constitute a limitation on this utility model. Modifications and variations can be made to this utility model within the spirit and scope of the claims, and all such modifications and variations will fall within the protection scope of this utility model.

Claims

1. A limiting device (1) for an aircraft cargo system, the limiting device (1) being used to secure a pallet loaded with cargo, comprising: The guide rail (DG) is formed in the shape of a long strip, and the direction of its long side is perpendicular to the direction of the central axis of the aircraft. as well as A left retainer assembly and a right retainer assembly, each having a plurality of retainers, the plurality of retainers being inclined relative to the guide rail (DG) and mounted on the guide rail (DG) in a manner rotatable relative to the guide rail (DG). Its features are, The aircraft cargo system limiting device (1) also includes an anti-misloading component (FWZJ). The anti-misinstallation component (FWZJ) is detachably inserted into the guide rail (DG) at a position adjacent to and above the bottom end of the plurality of retainers.

2. The aircraft cargo system limiting device (1) as described in claim 1, characterized in that, A mating groove for receiving the anti-misinstallation component (FWZJ) is formed at the position corresponding to the anti-misinstallation component (FWZJ) in one of the plurality of fasteners.

3. The aircraft cargo system limiting device (1) as described in claim 2, characterized in that, The multiple retainers in the left retainer assembly and the multiple retainers in the right retainer assembly are arranged symmetrically along the long side of the guide rail (DG).

4. The aircraft cargo system limiting device (1) as described in claim 3, characterized in that, At the positions corresponding to the plurality of retainers in the guide rail (DG), clearance portions (BRBs) are also formed. Multiple retainers can be accommodated within the clearance section (BRB) until the upper surfaces of the multiple retainers are flush with the upper surface of the guide rail (DG).

5. The aircraft cargo system limiting device (1) as described in claim 1, characterized in that, It also includes eccentric bushings (PXCT), The eccentric bushing (PXCT) is installed between the guide rail (DG) and the plurality of retainers, and translates the plurality of retainers toward the center position of the guide rail (DG) along its long side.

6. The aircraft cargo system limiting device (1) as described in claim 5, characterized in that, One end of the eccentric bushing (PXCT) is fixedly mounted to the guide rail (DG), and the other end forms a hollow cylinder. The inner circle center (O1) of the hollow cylinder is located closer to the center position than the outer circle center (O2).

7. The aircraft cargo system limiting device (1) as described in claim 1, characterized in that, The plurality of retainers include a guide shuttle (DXS). The guide shuttle (DXS) is symmetrically arranged on both sides of the plurality of retainers in the short side direction of the guide rail (DG), and its outer surface is formed as an arc surface.

8. The aircraft cargo system limiting device (1) as described in any one of claims 1 to 7, characterized in that, The multiple fasteners are formed to be exactly the same shape.

9. The aircraft cargo system limiting device (1) as described in claim 1, characterized in that, Fixtures are also provided at both ends of the guide rail (DG) along the long side direction, which are vertically arranged relative to the guide rail (DG).

10. The aircraft cargo system limiting device (1) as described in claim 9, characterized in that, The plurality of fasteners include a snap-fit ​​portion (KYB) that extends obliquely downward from the upper end of the plurality of fasteners.

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