Device for limiting the displacement of a container

Abstract

A device for limiting the displacement of a container comprises: a base in which a strip-shaped groove is formed; the limiting part is installed on the base in the mode that the limiting part can protrude relative to the base or is contained in the groove and is flush with the upper surface of the base, and the container moves in the direction intersecting with the long side direction of the groove of the base. And under the condition that the limiting part is accommodated in the groove and is flush with the upper surface of the base, the limiting part becomes a flat plate.

Description

Technical Field

[0001] The present invention relates to a device for limiting the displacement of a container, in particular to a device for limiting the displacement of a container in an aircraft cargo hold. Background Art

[0002] In the past, when transporting cargo by airplane, a container (container or pallet, etc.) is usually used to load the cargo, and the container is placed at a fixed position in the aircraft cargo hold. In addition, a device for limiting the displacement of the container is usually provided in the aircraft cargo hold, and the device limits the displacement of the container by limiting the bottom plate of the container or the pallet.

[0003] The above-mentioned device for limiting the displacement of the container can not only limit the displacement of the container that needs to be limited in the cargo hold, but also allow the container that does not need to be limited to pass smoothly, and automatically restore to the limited state after the container passes.

[0004] The shape of the portion for limiting the position of the container is formed into a curved surface shape so as to catch the container when limiting the displacement of the container. However, when a container that does not need to be limited passes over the device for limiting the displacement of the container, since the shape of the container that plays a limiting role is formed into a curved surface shape, the container will fluctuate or even get stuck when passing over the portion. Summary of the invention

[0005] The present invention is accomplished in view of the above-mentioned technical problems, and an object thereof is to provide a device for limiting the displacement of a container, which will not cause fluctuation or jamming even when a container that does not require position restriction passes through.

[0006] In order to achieve the above-mentioned purpose, the first aspect of the present invention provides a device for limiting the displacement of a container, comprising: a base, the base being formed with a long strip-shaped groove; a limiting portion, the limiting portion being installed on the base in a manner that it can be raised relative to the base or be received in the groove and be flush with the upper surface of the base, the container moves along a direction intersecting with the long side direction of the groove of the base, and when the limiting portion is received in the groove and is flush with the upper surface of the base, the limiting portion becomes a flat plate.

[0007] According to the above structure, since the limiting part becomes a flat plate when the limiting part is received in the groove and flush with the upper surface of the base, the container that does not need to be limited will not fluctuate or get stuck when passing through the limiting part. Therefore, the limiting part with a simple structure can avoid the container from fluctuating or getting stuck when passing through the limiting part.

[0008] The device for limiting the displacement of a container according to the second aspect of the present invention is based on the device for limiting the displacement of a container according to the first aspect of the present invention, and the limiting part includes a first limiting plate and a second limiting plate, one end of the first limiting plate is fixed relative to the long side direction of the groove of the base and can rotate around the short side direction orthogonal to the long side direction, the other end of the second limiting plate reciprocates relative to the long side direction of the groove of the base and can rotate around the short side direction, the other end of the first limiting plate is pivotally connected to one end of the second limiting plate, and the first limiting plate and the second limiting plate can be raised in an inverted V shape or in a flat plate shape as the other end of the second limiting plate reciprocates relative to the long side direction of the groove of the base.

[0009] According to the above structure, since the limiting part includes a first limiting plate and a second limiting plate, the first limiting plate can be rotatably connected to the base, the second limiting plate can be rotatably connected to the base, and the first limiting plate and the second limiting plate are pivotally connected, the limiting part can be converted between a flat plate shape and an inverted V shape.

[0010] The device for limiting the displacement of a container according to the third aspect of the present invention is based on the device for limiting the displacement of a container according to the second aspect of the present invention, wherein the pivot between the first limiting plate and the second limiting plate extends toward the side where the container is located relative to the groove of the base in the short side direction, and a limiting roller that can rotate relatively is provided on the extending portion of the pivot extending toward the side where the container is located.

[0011] According to the above structure, since the pivot extends toward the side where the container is located in the short side direction relative to the pivot between the first limiting plate and the second limiting plate, and a limiting roller that can rotate relatively is sleeved on the protruding part of the pivot, it is possible to limit the container while allowing its displacement in the X direction.

[0012] The device for limiting the displacement of a container according to a fourth aspect of the present invention is based on the device for limiting the displacement of a container according to the third aspect of the present invention, wherein a receiving hole for receiving the limiting roller is formed on the groove wall of the groove of the base.

[0013] According to the above structure, the limiting roller is accommodated in the accommodation hole formed in the groove wall of the groove of the base, so that the container that does not need to be limited can be prevented from being hindered by the limiting roller when it passes over the first limiting plate and the second limiting plate that are transformed into flat plates.

[0014] The device for limiting the displacement of a container according to the fifth aspect of the present invention is based on the device for limiting the displacement of a container described in any one of the first to fourth aspects of the present invention, wherein one end of the first limiting plate is connected to the base via a fixed shaft, and the other end of the second limiting plate is connected to the base via a rotating shaft, and the fixed shaft and the rotating shaft are connected via an elastic return spring.

[0015] According to the above structure, the first limit plate and the second limit plate are both configured to be connected to the base at one end and connected via an elastic restoring spring at the other end, so that the limit portion can be turned into an inverted V shape when the limit function is exerted, and can be turned into a flat plate for the container to pass over when the limit function is not required, and automatically reset after passing over. Thus, the limit portion can well achieve limit and automatic reset with a simple structure.

[0016] The device for limiting the displacement of a container according to the sixth aspect of the present invention is based on the device for limiting the displacement of a container according to the fifth aspect of the present invention, wherein guide holes for reciprocating movement of the rotating shaft in the long side direction are respectively formed on the groove walls of the groove.

[0017] According to the above structure, since guide holes for the rotating shaft to reciprocate in the long side direction are respectively formed in the groove wall of the groove, the first limiting plate and the second limiting plate can be deformed by the reciprocating movement of the rotating shaft in the guide holes.

[0018] The device for limiting the displacement of a container according to the seventh aspect of the present invention is based on the device for limiting the displacement of a container according to the sixth aspect of the present invention, and the guide hole is constructed so that when the limiting portion is deformed into a flat plate, the rotating shaft moves to one end of the guide hole, and when the limiting portion is deformed into a specified angle, the rotating shaft moves to the other end of the guide hole.

[0019] According to the above structure, since the guide hole is constructed so that when the limiting portion is deformed into a flat plate, the rotating axis moves to one end of the guide hole, and when the limiting portion is deformed into a specified angle, the rotating axis moves to the other end of the guide hole, the length of the guide hole can be appropriately adjusted to meet the deformation requirements of the limiting portion.

[0020] The device for limiting the displacement of a container according to the eighth aspect of the present invention is based on the device for limiting the displacement of a container according to any one of the first to fourth aspects of the present invention, and a limiting component is formed by protruding inwardly on the groove wall of the groove, and the distance between the limiting component and the upper surface of the groove wall of the groove is not less than the thickness of the first limiting plate and the second limiting plate.

[0021] According to the above structure, since a limiting component is also formed on the groove wall of the groove, the distance between the limiting component and the upper surface of the groove wall of the groove is not less than the thickness of the first limiting plate and the second limiting plate. Therefore, when the limiting portion is transformed into a flat plate and received in the groove of the base, it can prevent the container from being stuck when it passes over the limiting portion.

[0022] The device for limiting displacement of a container according to a ninth aspect of the present invention is based on the device for limiting displacement of a container according to the eighth aspect of the present invention, wherein the limiting component is formed to include a plurality of limiting blocks arranged along the long side direction.

[0023] According to the above structure, since the limiting component is formed to include a plurality of limiting blocks arranged along the long side direction, it is possible to ensure that the limiting portion is flush with or lower than the upper surface of the groove wall of the groove of the base when it becomes a flat plate through a simple structure. Therefore, it is possible to avoid fluctuations or jams when the container that does not need to be limited passes over the limiting portion.

[0024] A tenth aspect of the present invention provides an aircraft, wherein the device for limiting the displacement of a container according to any one of the first to ninth aspects is provided in a cargo hold of the aircraft.

[0025] According to the above structure, since the device for limiting the displacement of the container described in any one of the first to eighth aspects is provided in the cargo hold of the aircraft, the container can be smoothly positioned at a specified position in the cargo hold and the containers can be arranged in the X direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 This is a schematic diagram showing a device for limiting displacement of a container according to a first embodiment of the present invention.

[0028] Figure 2 This is a schematic diagram showing a state in which the device for limiting displacement of a container according to the first embodiment of the present invention limits displacement of the container.

[0029] Figure 3 This is a side view showing a state in which the device for limiting displacement of a container according to the first embodiment of the present invention limits the container.

[0030] Figure 4This is a schematic diagram showing a state where the device for restricting displacement of a container according to the first embodiment of the present invention does not restrict the container.

[0031] (Explanation of symbols)

[0032] 100 Devices for limiting the displacement of ULDs;

[0033] 10 base;

[0034] 11 slot bottom;

[0035] 12 slot wall;

[0036] 121 guide hole;

[0037] 122 limit block;

[0038] 123 storage holes;

[0039] 20 limiting part;

[0040] 21 first limiting plate;

[0041] 22 second limiting plate;

[0042] 23 Pivot;

[0043] 24 fixed axis;

[0044] 241 shaft end;

[0045] 242 shaft body;

[0046] 25 rotating shaft;

[0047] 251 shaft end;

[0048] 252 shaft body;

[0049] 26 elastic return spring;

[0050] 27 limit roller;

[0051] 3. ULD;

[0052] 31 bottom plate;

[0053] 32 containers;

[0054] 4 Floor. DETAILED DESCRIPTION

[0055] Below, refer to Figures 1 to 4 Various embodiments of the apparatus 100 for limiting displacement of a container according to the present invention will be described. The apparatus 100 for limiting displacement of a container according to the present invention is used to limit displacement of a container 30 in a cargo hold of an aircraft. Figure 1This is a schematic diagram showing a device for limiting displacement of a container according to a first embodiment of the present invention. Figure 2 This is a schematic diagram showing a state in which the device for limiting displacement of a container according to the first embodiment of the present invention limits displacement of the container. Figure 3 This is a side view showing a state in which the device for limiting displacement of a container according to the first embodiment of the present invention limits displacement of the container. Figure 4 This is a schematic diagram showing a state in which the container passes over the device for restricting displacement of the container according to the first embodiment of the present invention.

[0056] In addition, for the sake of convenience, in the following Figures 1 to 4 In the figure, the long side direction of the groove of the base 10 is set to the X direction, one side is set to the X1 side, and the other side is set to the X2 side. The short side direction of the groove of the base 10 is set to the Y direction, one side is set to the Y1 side, and the other side is set to the Y2 side. The depth direction of the groove of the base 10 is set to the Z direction, one side is set to the Z1 side, and the other side is set to the Z2 side.

[0057] The container of the present invention is formed by including a container plate (refer to Figure 2 ) and a structure in which a container is fixed on a loading board or a structure in which a safety net is directly used to net the cargo on the loading board. In the preferred embodiments hereinafter, only the structure in which a container is fixed on a loading board will be described.

[0058] In the following embodiments, the container is described as being displaced in a direction orthogonal to the longitudinal direction. However, the present invention is not limited thereto, and the container may be displaced in another direction intersecting the longitudinal direction.

[0059] In the following description, the long side direction of the concave groove of the base 10 is referred to as the X direction, the short side direction of the concave groove of the base 10 is referred to as the Y direction, and the direction orthogonal to both the X direction and the Y direction is referred to as the Z direction.

[0060] (First Embodiment)

[0061] like Figure 1 and Figure 2 As shown, the device 100 for limiting the displacement of the container according to the present embodiment is fixed at a predetermined position of the aircraft cargo hold by a fixing member (not shown).

[0062] The device 100 for limiting the displacement of the container of this embodiment includes: a base 10, which is formed in a groove shape, including a groove bottom 11 and a groove wall 12; and a limiting portion 20, which includes a first limiting plate 21, a second limiting plate 22, a pivot 23 pivotally connecting the first limiting plate 21 and the second limiting plate 22, a limiting roller 27 sleeved on the pivot 23, a fixed shaft 24, a rotating shaft 25 and an elastic return spring 26 connecting the fixed shaft 24 and the rotating shaft 25.

[0063] Specifically, if Figure 2 and Figure 3 As shown, the limiting part 20 can limit the displacement of the container 3 in the Y direction. In the limiting part 20, the first limiting plate 21 is in the shape of a flat plate, and one end of the limiting plate 21 on the X2 side is rotatably mounted on the base 10 via a fixed shaft 24. The fixed shaft 24 is formed to include a shaft body 242 located in the groove of the base 10 and shaft ends 241 located at both ends of the groove of the base 10 in the Y direction. The diameter of the shaft end 241 is larger than the diameter of the shaft body 242. The groove wall 12 of the groove is respectively formed with fixing holes (not shown) for mounting the fixing shaft 24. The shaft end 241 of the fixing shaft 24 is exposed on the outer surface of the groove wall 12 and abuts against the outer surface.

[0064] The second limit plate 22 is in the shape of a flat plate, and is rotatably mounted on the base 10 via the rotating shaft 25, and one end of the second limit plate 22 on the X1 side is mounted on the base 10 via the rotating shaft 25. The rotating shaft 25 is formed to include a shaft body 252 located in the groove of the base 10 and shaft ends 251 located at both ends of the groove in the Y direction of the base 10, and the diameter of the shaft end 251 is larger than the diameter of the shaft body 252. The groove wall 12 of the groove is respectively formed with fixing holes (not shown) for mounting the rotating shaft 25, and the shaft end 251 of the rotating shaft 25 is exposed from the outer surface of the groove wall 12 and abuts against the outer surface.

[0065] It should be noted that although the first limiting plate 21 can rotate around the fixed axis 24 and the second limiting plate 22 can rotate around the rotating axis 25, the position of the fixed axis 24 relative to the groove wall 12 of the groove in the long side direction (i.e., the X direction) is fixed, and the position of the rotating axis 25 relative to the groove wall 12 of the groove in the long side direction (i.e., the X direction) is movable.

[0066] In addition, one end of the X1 side of the first limiting plate 21 and one end of the X2 side of the second limiting plate 22 are connected via a pivot 23, and both can rotate around the pivot 23. Moreover, a limiting roller 27 is also provided on the portion of the pivot 23 that extends to the Y1 side beyond the two limiting plates, and the limiting roller 27 can rotate around the pivot 23.

[0067] Specifically, Figure 1As shown in FIG. 1 , an oblong guide hole 121 is formed in each of the groove walls 12, and the shaft body 252 of the rotating shaft 25 passes through the guide hole 121, and the shaft end 251 is exposed to and abuts against the outer surface of the groove wall 12. The rotating shaft 25 is mounted on the base 10 in a manner that it can move along the X direction in the guide hole 121. An elastic return spring 26 is connected between the fixed shaft 24 and the rotating shaft 25.

[0068] In the initial state, if Figure 2 As shown, under the action of the elastic restoring spring 26, the first limit plate 21 and the second limit plate 22 are raised in an inverted V shape, and the angle between the two is 60 degrees. At this time, if the container 3 on the floor 4 moves along the Y direction toward the device 100 for limiting the displacement of the container, the Y2 side edge of the bottom plate 31 of the container 3 will enter the space between the limit roller 27 and the floor 4, thereby limiting the displacement of the container 3 in the Y direction.

[0069] In addition, if Figure 3 As shown, the limiting roller 27 and the floor 4 can also limit the position of the bottom plate 31 of the container 3, thereby limiting the displacement of the container 3 in the Z direction.

[0070] That is, when the first limiting plate 21 and the second limiting plate 22 of the limiting portion are raised in an inverted V shape, the displacement of the container 3 in the Y direction and the Z direction can be limited by the limiting portion 20 at the same time.

[0071] In addition, when the bottom plate 31 of the container 3 enters the space between the limiting roller 27 and the floor 4, as shown in FIG. Figure 3 As shown, the limiting roller 27 contacts the bottom plate 31 and drives the bottom plate 31 to move along the X direction by rotating. In this way, the containers 3 can be arranged in the X direction while limiting the displacement of the containers 3 in the Y direction.

[0072] In addition, if Figure 1 As shown, two stoppers 122 arranged in the X direction are formed on the opposite inner surfaces of the two groove walls 12, that is, a total of four stoppers 122 are formed. These stoppers 122 are arranged at the same interval in the X direction (i.e., the long side direction of the groove of the base 10), and the distance from the upper surface of the groove of the base 10 in the Z direction is less than the thickness of the first stopper plate 21 and the second stopper plate 22. Figure 4 As shown, when the first and second limit plates 21 and 22 are pressed from the Z1 side, the lower surfaces of the first and second limit plates 21 and 22 abut against the four limit blocks 122 to be received in the grooves of the base 10. In this way, the first and second limit plates 21 and 22 become a whole flat plate with their upper surfaces flush.

[0073] At this time, if Figure 4As shown, without limiting the displacement of the container 3, the operator presses the first limit plate 21 and the second limit plate 22 downward from the pivot 23 so that the two become a whole flat plate. At this time, the limit roller 27 is received in the receiving hole 123 formed in the groove wall 12. That is to say, the upper surface of the entire limit portion 20 is flush with the upper surface of the groove of the base 10, and the upper surface of the bottom plate 31 of the container 3 is flush with the upper surface of the groove wall of the groove of the base 10. In this way, the container 32 on the bottom plate 31 will smoothly pass over the surface of the first limit plate 21 and the second limit plate 22. Since the first limit plate 21 and the second limit plate 22 become a whole flat plate at this time, the container 32 will not fluctuate or get stuck when passing over. Moreover, after the container 32 passes over, the first limit plate 21 and the second limit plate 22 automatically return to their original position under the action of the restoring force of the elastic return spring 26. Figure 2 The inverted V shape shown.

[0074] (Technical Effects of the First Embodiment)

[0075] As described above, when the container 3 passes over the limiter 20 along the Y direction, the first limiter plate 21 and the second limiter plate 22 become a flat plate and are accommodated in the groove of the base 10. Therefore, the container 3 will not fluctuate or get stuck in the process of passing over the limiter 20. Thus, the container 3 can be prevented from fluctuating or getting stuck by a simple structure.

[0076] When the container 3 is restricted in displacement by the raised stopper 20, the restricting roller 27 restricts displacement of the container 3 in the Y and Z directions while allowing the container 3 to move in the X direction. Thus, a plurality of containers 3 can be arranged in the X direction.

[0077] In addition, since the first limit plate 21 and the second limit plate 22 are connected via the elastic return spring 26, after the container 3 passes over the first limit plate 21 and the second limit plate 22 which have become a flat plate, the elastic return spring 26 can automatically restore the first limit plate 21 and the second limit plate 22 to an inverted V shape. This can make manual operation easier.

[0078] Above, in order to make the purpose, technical solutions and advantages of each embodiment of the present invention clearer, the technical solutions of each embodiment of the present invention are clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0079] In the above embodiment, four limit blocks are illustrated, but the present invention is not limited thereto. Other numbers of limit blocks may be used, and the limit blocks may be arranged in other ways.

[0080] In the above-mentioned embodiment, the stopper is formed in a block shape, but the present invention is not limited thereto, and may be formed in other shapes.

[0081] In the above embodiment, the first limit plate and the second limit plate are raised in an inverted V shape to achieve the effect of limiting displacement, but the present invention is not limited thereto, and the limit plate may also be raised in other shapes to achieve the effect of limiting displacement.

[0082] In the above embodiment, the angle between the first limiting plate and the second limiting plate when the limiting function in the Y direction is exerted is 60 degrees, but the present invention is not limited thereto and may be other degrees.

Claims

1. A device for limiting the displacement of a container, comprising: A base, wherein the base is formed with a long groove; a limiting portion, the limiting portion being installed on the base in a manner that it can be raised relative to the base or be received in the groove and be flush with the upper surface of the base, The container moves in a direction intersecting the long side direction of the groove of the base. It is characterized in that When the limiting portion is received in the groove and is flush with the upper surface of the groove, the limiting portion becomes a flat plate.

2. The device for limiting the displacement of a container according to claim 1, characterized in that: The limiting portion includes a first limiting plate and a second limiting plate, One end of the first limiting plate is fixed relative to the long side direction of the groove of the base and can rotate around the short side direction orthogonal to the long side direction, and the other end of the second limiting plate reciprocates relative to the long side direction of the groove of the base and can rotate around the short side direction. The other end of the first limit plate is pivotally connected to one end of the second limit plate, and the first limit plate and the second limit plate can be raised in an inverted V shape or in a flat plate shape as the other end of the second limit plate reciprocates relative to the long side direction of the groove of the base.

3. The device for limiting the displacement of a container according to claim 2, characterized in that: The pivot between the first limiting plate and the second limiting plate extends toward the side where the container is located relative to the groove of the base in the short side direction. A relatively rotatable limiting roller is sleeved on a protruding portion of the pivot extending toward a side where the container is located.

4. The device for limiting the displacement of a container according to claim 3, characterized in that: A receiving hole for receiving the limiting roller is formed on the groove wall of the groove of the base.

5. The device for limiting the displacement of a container according to any one of claims 1 to 4, characterized in that: One end of the first limiting plate is connected to the base via a fixed shaft. The other end of the second limiting plate is connected to the base via a rotating shaft. The fixed shaft and the rotating shaft are connected via an elastic return spring.

6. The device for limiting the displacement of a container according to claim 5, characterized in that: Guide holes for the rotating shaft to reciprocate in the long side direction are respectively formed on the groove walls of the grooves.

7. The device for limiting the displacement of a container according to claim 6, characterized in that: The guide hole is configured such that when the limiting portion is deformed into a flat plate, the rotation axis moves to one end of the guide hole, and when the limiting portion is deformed into a specified angle, the rotation axis moves to the other end of the guide hole.

8. The device for limiting the displacement of a container according to any one of claims 1 to 4, characterized in that: A limiting component is formed by protruding inwardly from the groove wall of the groove, and the distance between the limiting component and the upper surface of the groove wall of the groove is not less than the thickness of the first limiting plate and the second limiting plate.

9. The device for limiting the displacement of a container according to claim 8, characterized in that: The limiting component is formed to include a plurality of limiting blocks arranged along the long side direction.

10. An aircraft, characterized in that: The device for limiting the displacement of a container according to any one of claims 1 to 9 is provided in the cargo hold of the aircraft.

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