A type of transport container

Abstract

This application discloses a vehicle transport box, including a base frame and a ramp assembly. The ramp assembly includes a connecting frame and a ramp plate. The connecting frame includes a first end and a second end positioned opposite each other. The first end is pivotally connected to the end wall of the base frame via a rotation axis extending about the width direction of the vehicle transport box. One end of the ramp plate is pivotally connected to the second end via a rotation axis extending about the width direction of the vehicle transport box. When the ramp assembly is in a retracted state, the connecting frame is pivoted relative to the end wall until the second end is substantially vertically above the first end, and the second end is not lower than the top surface of the end wall of the base frame. The ramp plate is pivoted and rests on top of the base frame. According to the vehicle transport box of this utility model, the ramp plate can be pivotally folded and laid flat on top of the base frame when not in use, greatly reducing the overall footprint of the vehicle transport box, facilitating vehicle parking and driving in narrow spaces, and improving the practicality and applicability of the vehicle transport box.

Description

Technical Field

[0001] This utility model relates to the field of transportation equipment technology, specifically to a vehicle transport box. Background Technology

[0002] When loading and unloading vehicles from a freight car carrier, a loading platform needs to be connected from the ground to the upper surface of the carrier's underframe. Currently, most freight car carriers have fixed loading platforms. These fixed platforms occupy a significant amount of space when not in use, causing considerable inconvenience for vehicle parking and daily use. Furthermore, when transporting certain special goods, the fixed loading platform cannot be flexibly adjusted, limiting the freight car carrier's usability.

[0003] Therefore, a transport container is needed to at least partially solve the above problems. Utility Model Content

[0004] The utility model description section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] To at least partially solve the above problems, this utility model provides a car carrier box, the car carrier box comprising:

[0006] A base frame, the base frame including an end wall located at the end of the base frame in the longitudinal direction of the transport box;

[0007] A ramp assembly, the ramp assembly including a connecting frame and a ramp slab;

[0008] The connecting frame includes a first end and a second end positioned opposite each other, wherein the first end is pivotally connected to the end wall via a rotation axis extending about the width direction of the transport box.

[0009] One end of the ramp plate extends about the rotation axis of the width direction of the transport box and is pivotally connected to the second end;

[0010] The ramp assembly has a retracted state. When the ramp assembly is in the retracted state, the connecting frame pivots relative to the end wall so that the second end is substantially vertically above the first end, the second end is not lower than the top surface of the end wall, and the ramp plate pivots and rests on the base frame.

[0011] Optionally, the ramp assembly also has an extended state, in which the connecting frame is pivoted relative to the end wall to a position where the second end is obliquely below the first end, and the ramp plate is pivoted to a position substantially coplanar with the connecting frame and where one end of the ramp plate away from the connecting frame is used for support on the ground.

[0012] Optionally, the ramp assembly also has an upright state, in which the connecting frame is pivoted relative to the end wall to the second end substantially above the first end, and the ramp plate is pivoted to the second end substantially above the connecting frame and substantially coplanar with the connecting frame.

[0013] Optionally, the ramp assembly further includes a limiting component, which is detachably connected to the connecting frame and the ramp plate;

[0014] The limiting component is used to fix the ramp slab and the connecting frame together when the ramp slab and the connecting frame are substantially coplanar, so as to restrict the ramp slab from pivoting relative to the connecting frame.

[0015] Optionally, the limiting assembly includes a fixing plate and at least two fasteners for securing the fixing plate to the ramp plate and the connecting frame; and / or,

[0016] The limiting component is connected to at least one side of the ramp component in the width direction of the transport container.

[0017] Optionally, the transport box further includes a column, which is connected to the end of the base frame in the width direction and the length direction of the transport box;

[0018] When the ramp assembly is in the upright position, the ramp slab is fixedly connected to the column.

[0019] Optionally, the ramp slab and the column are fixedly connected by a fixing assembly;

[0020] The fixing component includes a limiting part and a limiting member; wherein...

[0021] The limiting part is disposed on the column, and the limiting part has an insertion hole; the limiting member is movably disposed on the ramp plate;

[0022] When the ramp assembly is in the upright position, the limiting member can be partially moved to the outside of the ramp plate and inserted into the insertion hole to fix the ramp plate to the column.

[0023] When the ramp assembly is de-erected, the limiting member can retract from the socket and move to the inside of the ramp plate.

[0024] Optionally, the insertion hole is constructed as a through hole, allowing the limiting member to pass through it; the limiting member has a pin hole, and when the limiting member moves into the insertion hole, the pin hole is located on the side of the limiting portion away from the ramp plate; the fixing assembly further includes a pin, which passes through the pin hole to prevent the limiting member from dislodging from the insertion hole; and / or,

[0025] The limiting component is equipped with a handle.

[0026] Optionally, the transport box further includes a column, which is pivotally connected to the end of the base frame in the width direction and the length direction of the transport box; the column has a folded state, and when the column is in the folded state, the column pivots and rests on the base frame.

[0027] When the ramp assembly is in the stowed state, the upright is in the folded state, and in the width direction of the transport box, the ramp assembly and the upright are spaced apart, with the ramp assembly closer to the center of the base frame than the upright; and / or,

[0028] When the ramp assembly is in the stowed state, the column is in the folded state, and the ramp plate is fixedly connected to the column.

[0029] Optionally, the ramp assembly further includes a support and a pivot shaft, the support being fixedly connected to the end wall, the pivot shaft extending along the width direction of the transport box, and the first end being connected to the support via the pivot shaft, so that the connecting frame is pivotally connected to the end wall;

[0030] The pivot shaft and the end wall are spaced apart along the length of the transport car body; and / or

[0031] The support is connected to the top of the end wall in the vertical direction so that when the ramp assembly is in the deployed state, the top surface of the first end and the top surface of the end wall are substantially at the same horizontal plane.

[0032] Optionally, the ramp assembly includes two sub-sections spaced apart in the width direction of the transport container, each sub-section including the connecting frame and the ramp plate, and the two sub-sections connected by a connecting rod; and / or,

[0033] The transport box includes two ramp assemblies, which are respectively connected to the base frame at both ends of the transport box along its length.

[0034] According to this utility model, the ramp used for loading and unloading vehicles can be pivotally folded and laid flat on top of the base frame when not in use, greatly reducing the overall footprint of the transport box. This facilitates parking and movement of vehicles transporting the transport box in narrow spaces, and makes folding of the transport box easier. This utility model solves the problems of existing transport boxes having fixed loading platforms, large space requirements, and inflexible use, thus improving the practicality and applicability of the transport box. Attached Figure Description

[0035] The following drawings, which are incorporated herein by reference and are used to understand this application, illustrate embodiments of the invention and their descriptions to explain the principles of the invention.

[0036] Figure 1 This is a structural schematic diagram of a transport box according to a specific embodiment of the present utility model;

[0037] Figure 2 for Figure 1 A magnified view of a portion of region A in the middle;

[0038] Figure 3 This is a structural schematic diagram of the ramp assembly of the transport box in its unfolded state according to a specific embodiment of the present utility model.

[0039] Figure 4 for Figure 3 A partially enlarged schematic diagram of the ramp component shown;

[0040] Figure 5 This is a partially enlarged schematic diagram of the upright state of the ramp assembly of the transport box according to a specific embodiment of the present utility model.

[0041] Figure 6 for Figure 5 A schematic diagram of the fixed components connecting the ramp assembly to the column in the upright state;

[0042] Figure 7 for Figure 3 A partial bottom view of the ramp assembly shown.

[0043] Explanation of reference numerals in the attached figures:

[0044] 10: Base frame

[0045] 12: End wall

[0046] 20: Sub-section

[0047] 21: Connecting frame

[0048] 21A: First end

[0049] 21B: Second end

[0050] 22: Ramps

[0051] 23: Support

[0052] 24: Pivot axis

[0053] 25: Fixing plate

[0054] 26: Fasteners

[0055] 27: Limiting component

[0056] 271: Handle

[0057] 28: Pin

[0058] 30: Column

[0059] 31: Limiting part

[0060] 40: Connecting rod

[0061] 100: Cargo Box

[0062] D1: Length direction

[0063] D2: Width direction Detailed Implementation

[0064] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0065] To fully understand this invention, a detailed description will be set forth in the following description. It should be understood that these embodiments are provided so that the disclosure of this invention is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. Obviously, the implementation of embodiments of this invention is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this invention are described in detail below; however, other embodiments may be implemented in addition to these detailed descriptions.

[0066] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0067] The ordinal numbers such as "first" and "second" used in this invention are merely identifiers and have no other meaning, such as a specific order. Furthermore, for example, the term "first component" does not imply the existence of "second component," and the term "second component" does not imply the existence of "first component."

[0068] It should be noted that the terms “up,” “down,” “front,” “back,” “left,” “right,” “inner,” “outer,” and similar expressions used in this article are for illustrative purposes only and are not intended to be restrictive.

[0069] This utility model discloses a vehicle transport box for transporting vehicles, which can be loaded into or unloaded from the box via ramps.

[0070] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings.

[0071] like Figure 1 and Figure 2 As shown, this utility model discloses a vehicle transport box 100, which includes a base frame 10 and a ramp assembly. The ramp assembly is connected to the base frame 10 and serves as a connecting plate between the ground outside the box and the base frame 10 after being unfolded, supporting vehicles entering and exiting the vehicle transport box 100. The base frame 10 includes an end wall 12 located at the end of the base frame 10 in the longitudinal direction D1 of the vehicle transport box 100.

[0072] The ramp assembly includes a connecting frame 21 and a ramp plate 22. Both ends of the connecting frame 21 are pivotally connected to the ramp plate 22 and the base frame 10, respectively. Specifically, the connecting frame 21 includes a first end 21A and a second end 21B positioned opposite each other, representing the two ends of the connecting frame 21. The first end 21A has a rotation axis extending about the width direction D2 of the transport box 100, which is pivotally connected to the end wall 12. One end of the ramp plate 22 has a rotation axis extending about the width direction D2 of the transport box 100, which is pivotally connected to the second end 21B. The connecting frame 21 is, for example, a square frame or a U-shaped frame. The ramp plate 22 and the second end 21B can be connected by a hinge or similar structure, allowing the ramp plate 22 to pivot at least 90° relative to the connecting frame 21, from being substantially coplanar with the connecting frame 21 to being substantially perpendicular to the connecting frame 21.

[0073] The ramp assembly has a retracted state. When the ramp assembly is in the retracted state, the connecting frame 21 pivots relative to the end wall 12 until the second end 21B is substantially vertically above the first end 21A, and the second end 21B is not lower than the top surface of the end wall 12. That is, the pivot axis 24 connecting the second end 21B and the ramp plate 22 is not lower than the top surface of the end wall 12. When the ramp assembly is in the retracted state, the ramp plate 22 pivots to rest above the base frame 10, that is, the ramp plate 22 can be placed flat on the base frame 10.

[0074] According to this utility model, when the ramp assembly is not needed, the connecting frame and ramp plate in the ramp assembly can be pivoted, allowing the ramp plate to lie flat on the base frame. This design significantly reduces the overall footprint of the transport box, facilitating parking and movement of vehicles transporting the transport box in confined spaces.

[0075] like Figure 3 and Figure 4 As shown, the ramp assembly also has an deployed state. When the ramp assembly is in the deployed state, the connecting frame 21 pivots relative to the end wall 12 so that the second end 21B is obliquely below the first end 21A, and the ramp plate 22 pivots to a position substantially coplanar with the connecting frame 21, with one end of the ramp plate 22 furthest from the connecting frame 21, for support on the ground. Thus, the vehicle can drive into the compartment from the ground or out of the compartment to the ground. It is understood that the connecting frame 21 can pivot at an angle greater than 90° relative to the end wall 12.

[0076] The ramp assembly also includes a support 23 and a pivot shaft 24. Specifically, the support 23 is fixedly connected to the end wall 12, for example, to the surface of the end wall 12 facing outward in the longitudinal direction D1 of the transport box 100. The pivot shaft 24 extends along the width direction D2 of the transport box 100, with a first end 21A connected to the support 23 via the pivot shaft 24, so that the connecting frame 21 is pivotally connected to the end wall 12. To allow the connecting frame 21 to pivot relative to the end wall 12 until the second end 21B is substantially vertically above the first end 21A, the pivot shaft 24 is spaced apart from the end wall 12 in the longitudinal direction D1 of the transport box 100.

[0077] To ensure a smooth transition of the vehicle from ramp 22 to underframe 10, support 23 is connected to the top of end wall 12 in the vertical direction, so that when the ramp assembly is in the deployed state, the top surface of the first end 21A is substantially at the same level as the top surface of end wall 12.

[0078] When the ramp assembly is in the deployed state, the ramp slab 22 and the connecting frame 21 need to remain substantially coplanar to provide a smooth ramp surface for the vehicle. For this purpose, the ramp assembly also includes a limiting component, which is detachably connected to both the connecting frame 21 and the ramp slab 22. The limiting component securely connects the ramp slab 22 and the connecting frame 21 when they are substantially coplanar, thereby restricting the pivoting of the ramp slab 22 relative to the connecting frame 21.

[0079] In one specific implementation, a set of limiting components includes a fixing plate 25 and at least two fasteners 26 (e.g., screws) for securing the fixing plate 25 to the ramp 22 and the connecting frame 21. Specifically, at least one fastener 26 secures the fixing plate 25 to the ramp 22, and at least one fastener 26 secures the fixing plate 25 to the connecting frame 21. Thus, after installation, the limiting components can restrict the ramp 22 from pivoting relative to the connecting frame 21; after removing the limiting components, the ramp 22 can pivot relative to the connecting frame 21, allowing the ramp components to be in a retracted state.

[0080] The limiting component is connected to at least one side of the ramp component in the width direction D2 of the transport box 100. Preferably, a set of limiting components are connected to a set of ramp plates 22 and a connecting frame 21 on both sides of the transport box 100 in the width direction D2, wherein the set of ramp plates 22 and connecting frame 21 includes a ramp plate 22 and a connecting frame 21 connected to each other.

[0081] like Figure 1As shown, the vehicle carrier 100 also includes a column 30, which is connected to the end of the base frame 10 in the width direction D2 and the length direction D1 of the vehicle carrier 100. The column 30 is fixed in an upright position at least when a vehicle is loaded in the vehicle carrier 100, and the column 30 extends substantially vertically in the upright position.

[0082] like Figure 5 and Figure 6 As shown, the ramp assembly also has an upright position. When the ramp assembly is in the upright position, the connecting frame 21 pivots relative to the end wall 12 so that the second end 21B is substantially vertically above the first end 21A, and the ramp plate 22 pivots so that it is substantially vertically above the connecting frame 21 and substantially coplanar with the connecting frame 21. When the ramp assembly is in the upright position, the ramp plate 22 is fixedly connected to the column 30, that is, the ramp plate 22 can be fixed in the upright position by connecting to the column 30. When the ramp assembly is in the upright position, the fixing plate 25 preferably still fixes the ramp plate 22 and the connecting frame 21 to keep the ramp plate 22 and the connecting frame 21 coplanar. After loading the vehicle into the transport box 100, the ramp assembly is no longer in use and can be pivoted to the upright position and fixed to the column 30. Therefore, the ramp components do not occupy additional space, reducing the overall footprint of the transport box 100, facilitating the parking of vehicles transporting the transport box 100 and their movement in narrow spaces, and reducing the risk of the ramp components being damaged by bumps.

[0083] The ramp slab 22 and the upright 30 are fixedly connected by a fixing assembly. Specifically, the fixing assembly includes a limiting part 31 and a limiting member 27. The limiting part 31 is disposed on the upright 30 and has an insertion hole. The limiting member 27 is movably disposed on the ramp slab 22. For example, the ramp slab 22 has a limiting hole, and the limiting member 27 is movably inserted into the limiting hole of the ramp slab 22. When the ramp assembly is in an upright state, the limiting member 27 can partially move to the outside of the ramp slab 22 and extend into the insertion hole to fix the ramp slab 22 to the upright 30. When the ramp assembly is de-erected, the limiting member 27 can retract from the insertion hole and move to the inside of the ramp slab 22.

[0084] Preferably, the insertion hole is a through hole, allowing the retaining member 27 to pass through it. The retaining member 27 has a pin hole; when the retaining member 27 moves into the insertion hole, the pin hole is located on the side of the retaining portion 31 away from the ramp 22. The fixing assembly also includes a pin 28, which passes through the pin hole to prevent the retaining member 27 from dislodging from the insertion hole. Thus, the pin 28 prevents the retaining member 27 from accidentally dislodging from the insertion hole of the retaining portion 31 due to bumps or other reasons, effectively improving the safety of the ramp 22 during transportation in the transport container 100 and reducing the risk of the ramp 22 slipping or shaking.

[0085] More preferably, such as Figure 7As shown, the limiting member 27 is provided with a handle 271, which allows the user to move the limiting member 27 more conveniently.

[0086] In a preferred embodiment, the upright 30 is pivotally connected to the end of the base frame 10 in the width direction D2 and the length direction D1 of the transport box 100. The upright 30 has a folded state; when folded, it pivots and rests on top of the base frame 10. When the ramp assembly is in the stowed state, the upright 30 is folded, and in the width direction D2 of the transport box 100, the ramp assembly is spaced apart from the upright 30, and the ramp assembly is closer to the center of the base frame 10 than the upright 30. Multiple transport boxes 100 can be stacked or transported after being folded, greatly improving space utilization and transportation efficiency.

[0087] More preferably, when the ramp assembly is in the stowed state, the column 30 is in the folded state, and the ramp plate 22 is fixedly connected to the column 30, which can reduce the bumps of the ramp assembly during transportation and prevent the ramp assembly from accidentally pivoting during handling.

[0088] In a preferred embodiment, such as Figure 3 As shown, the ramp assembly includes two sub-sections 20, which are spaced apart along the width direction D2 of the transport box 100. Each sub-section 20 includes a connecting frame 21 and a ramp plate 22. The ramp assembly has a smaller overall mass, requires less effort to pivot, and saves materials. The two sub-sections 20 are connected by a connecting rod 40, allowing both sub-sections 20 to pivot and be fixed simultaneously. The connecting frame 21 of each sub-section 20 is connected to the end wall 12 via a pivot axis 24, or the pivot axis connecting the connecting frames 21 of both sub-sections 20 to the end wall 12 can be the same pivot axis.

[0089] The vehicle transport box 100 includes two ramp assemblies, which are respectively connected to both ends of the base frame 10 along the length D1 of the vehicle transport box 100. This allows for simultaneous loading or unloading of vehicles from both ends of the vehicle transport box 100, resulting in high loading and unloading efficiency. Both ramp assemblies are foldable, significantly reducing the overall footprint of the vehicle transport box 100 and facilitating parking and movement of vehicles transporting the vehicle transport box 100 in confined spaces.

[0090] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of the invention. Features described in one embodiment may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0091] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are only for illustrative purposes. This utility model is not limited to the above embodiments. Many variations and modifications can be made based on the teachings of this utility model, and all such variations and modifications fall within the scope of protection claimed by this utility model.

Claims

1. A cart carrier, characterized by, The transport container includes: A base frame, the base frame including an end wall located at the end of the base frame in the longitudinal direction of the transport box; A ramp assembly, the ramp assembly including a connecting frame and a ramp slab; The connecting frame includes a first end and a second end positioned opposite each other, wherein the first end is pivotally connected to the end wall via a rotation axis extending about the width direction of the transport box. One end of the ramp plate extends about the rotation axis of the width direction of the transport box and is pivotally connected to the second end; The ramp assembly has a retracted state. When the ramp assembly is in the retracted state, the connecting frame pivots relative to the end wall so that the second end is substantially vertically above the first end, the second end is not lower than the top surface of the end wall, and the ramp plate pivots and rests on the base frame.

2. The transport container according to claim 1, characterized in that, The ramp assembly also has an extended state, in which the connecting frame pivots relative to the end wall to a position where the second end is obliquely below the first end, and the ramp plate pivots to a position substantially coplanar with the connecting frame, with one end of the ramp plate away from the connecting frame used for support on the ground.

3. The transport container according to claim 1, characterized in that, The ramp assembly also has an upright position. When the ramp assembly is in the upright position, the connecting frame is pivoted relative to the end wall so that the second end is substantially vertically above the first end, and the ramp plate is pivoted so that it is substantially vertically above the connecting frame and substantially coplanar with the connecting frame.

4. The transport container according to claim 2 or 3, characterized in that, The ramp assembly also includes a limiting component, which is detachably connected to the connecting frame and the ramp plate; The limiting component is used to fix the ramp slab and the connecting frame together when the ramp slab and the connecting frame are substantially coplanar, so as to restrict the ramp slab from pivoting relative to the connecting frame.

5. The transport container according to claim 4, characterized in that, The limiting assembly includes a fixing plate and at least two fasteners, the fasteners being used to securely connect the fixing plate to the ramp plate and the connecting frame; and / or The limiting component is connected to at least one side of the ramp component in the width direction of the transport container.

6. The transport container according to claim 3, characterized in that, The transport box also includes a column, which is connected to the end of the base frame in the width direction and the length direction of the transport box; When the ramp assembly is in the upright position, the ramp slab is fixedly connected to the column.

7. The transport container according to claim 6, characterized in that, The ramp slab and the column are fixedly connected by a fixing component; The fixing component includes a limiting part and a limiting member; wherein... The limiting part is disposed on the column, and the limiting part has an insertion hole; the limiting member is movably disposed on the ramp plate; When the ramp assembly is in the upright position, the limiting member can be partially moved to the outside of the ramp plate and inserted into the insertion hole to fix the ramp plate to the column. When the ramp assembly is de-erected, the limiting member can retract from the socket and move to the inside of the ramp plate.

8. The transport container according to claim 7, characterized in that, The insertion hole is a through hole, allowing the limiting member to pass through it; the limiting member has a pin hole, and when the limiting member moves into the insertion hole, the pin hole is located on the side of the limiting part away from the ramp plate; the fixing assembly also includes a pin, which passes through the pin hole to prevent the limiting member from dislodging from the insertion hole; and / or The limiting component is equipped with a handle.

9. The transport container according to claim 1, characterized in that, The transport box also includes a column, which is pivotally connected to the end of the base frame in the width direction and the length direction of the transport box; the column has a folded state, and when the column is in the folded state, the column pivots and rests on the base frame. When the ramp assembly is in the stowed state, the upright is in the folded state, and in the width direction of the transport box, the ramp assembly and the upright are spaced apart, with the ramp assembly closer to the center of the base frame than the upright; and / or, When the ramp assembly is in the stowed state, the column is in the folded state, and the ramp plate is fixedly connected to the column.

10. The transport container according to claim 2, characterized in that, The ramp assembly also includes a support and a pivot shaft. The support is fixedly connected to the end wall, and the pivot shaft extends along the width direction of the transport box. The first end is connected to the support via the pivot shaft so that the connecting frame is pivotally connected to the end wall. The pivot shaft and the end wall are spaced apart along the length of the transport car body; and / or The support is connected to the top of the end wall in the vertical direction so that when the ramp assembly is in the deployed state, the top surface of the first end and the top surface of the end wall are substantially at the same horizontal plane.

11. The transport container according to claim 1, characterized in that, The ramp assembly includes two sub-sections spaced apart in the width direction of the transport container. Each sub-section includes the connecting frame and the ramp plate. The two sub-sections are connected by a connecting rod; and / or, The transport box includes two ramp assemblies, which are respectively connected to the base frame at both ends of the transport box along its length.

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