Transportation device

Abstract

The utility model relates to the technical field of transportation, and discloses a transportation device which comprises a base, a first supporting structure, a second supporting structure and a buffering structure. The end, close to the first supporting structure, of the second supporting structure is close to the base relative to the other end, so that the second face is obliquely arranged in the direction close to the first supporting structure, and the to-be-transported object is located in the containing space formed by the first face of the first supporting structure and the second face of the second supporting structure; the to-be-transported article can be blocked through the second surface, and the position of the to-be-transported article can be limited, so that the technical effect of improving the position limiting stability of the to-be-transported article is achieved. And meanwhile, by arranging a buffering structure, when the to-be-transported article passes through a bumpy road surface, the buffering structure can absorb vibration borne by the to-be-transported article, the to-be-transported article is prevented from being damaged, and therefore the technical effect of improving the transportation safety of the to-be-transported article is achieved.

Description

Technical Field

[0001] This utility model relates to the field of transportation technology, and specifically to transportation devices. Background Technology

[0002] Existing office buildings and cultural complexes mostly use large-area curtain wall glass to decorate the walls, which can improve the lighting effect of office areas. However, during the construction process, due to the large size of the curtain wall glass, it is necessary to use specialized flatbed trucks for transporting materials to move it.

[0003] Flatbed trucks specifically designed for transporting goods include:

[0004] Multiple spaced-apart frames, each including two inclined surfaces, are arranged in an overall "Λ" shape;

[0005] A fixing rod is installed above multiple frames to connect and fix them together.

[0006] Two extension frames are set horizontally at the two ends of the bottom surface of each frame, and the two extension frames extend horizontally in opposite directions.

[0007] The base plate is located below the extension frame, and pulleys are installed below the base plate to facilitate the transportation of the curtain wall glass.

[0008] Specifically, the bottom of the curtain wall glass is placed on top of the extension frame, and the sides of the curtain wall glass are placed at an angle on the frame, with the angle of inclination being the same as the angle of the inclined surface of the frame. This ensures that the curtain wall glass and the frame are completely in contact, avoiding the situation where the vertically set frame can only make line contact with the curtain wall glass. The inclined frame can increase the contact area with the curtain wall glass and improve the support effect on the curtain wall glass.

[0009] However, during use, because the flatbed truck lacks a horizontal positioning structure for the curtain wall glass, it is prone to bumping and colliding with the extension frame when traversing uneven terrain, potentially causing damage. Furthermore, the curtain wall glass may also slide horizontally off the extension frame, resulting in further damage. Utility Model Content

[0010] In view of this, the present invention provides a transportation device to solve the problems of existing curtain wall glass being easily damaged by bumps when transported by flatbed trucks on uneven roads, and the curtain wall glass easily slipping off the extension frame, causing damage to the curtain wall glass.

[0011] This utility model provides a transportation device, comprising:

[0012] Base;

[0013] A first support structure is disposed above the base, and a first surface is provided on the first support structure;

[0014] The second support structure is located above the base and on one side of the first support structure. One end of the second support structure is hinged to the first support structure. The end of the second support structure closer to the first support structure is positioned closer to the base than the other end. The second support structure has a second surface, and a accommodating space for supporting the items to be transported is formed between the second surface and the first surface.

[0015] A buffer structure is disposed between the base and the second support structure, the buffer structure comprising:

[0016] The elastic element is connected at one end to the second support structure and at the other end to the base.

[0017] Beneficial effects: By positioning the second support structure with one end closer to the first support structure relative to the other end closer to the base (i.e., the height of the second surface of the second support structure farther from the first support structure is higher than the height of the end closer to the first support structure), the second surface is tilted towards the first support structure. The item to be transported is located within the accommodating space formed by the first and second surfaces of the first and second support structures. The second surface acts as a barrier, limiting the position of the item and thus improving the stability of its position. Simultaneously, the inclusion of a buffer structure allows the item to absorb vibrations when traversing uneven surfaces, preventing damage and enhancing the safety of transporting the item.

[0018] In one alternative embodiment, the transport device includes:

[0019] A limiting structure is provided on the second support structure to limit the position of the item to be transported.

[0020] Beneficial effects: By setting a limiting structure, the position of the item to be transported can be restricted, thereby improving the stability of the item's position and thus enhancing the safety of transporting the item.

[0021] In one optional implementation, the limiting structure includes:

[0022] Multiple limiting grooves are provided on the second surface;

[0023] The first limiting element engages with the limiting groove;

[0024] And / or, the limiting structure includes a plurality of second limiting elements disposed on the second surface, the second limiting elements protruding from the second surface.

[0025] Beneficial effects: The engagement between the first limiting element and the limiting groove achieves the limiting of the item to be transported, ensuring its stable placement on the second surface and thus improving the positional stability of the item. And / or, by making the second limiting element protrude from the second surface, the position of the item to be transported can be further defined, further improving the stability of the positional limitation.

[0026] In one alternative embodiment, the transport device includes:

[0027] A drive structure, disposed on the base and / or the first support structure, is used to drive the movement of the transport device.

[0028] Beneficial effects: By setting a drive structure on the base and / or the first support structure, it is possible to facilitate the movement of the transport device by external force through the drive structure, thereby achieving the technical effect of improving the ease of driving the transport device.

[0029] In one optional implementation, the driving structure includes:

[0030] A driving element, one end of which is hinged to the base;

[0031] The telescopic structure has one end hinged to the driving element and the other end hinged to the first support structure, and is used to adjust the driving angle of the driving element.

[0032] And / or, a sliding element is provided on the bottom surface of the base.

[0033] Beneficial effects: Since one end of the drive element is hinged to the base, and the drive element is also hinged to the telescopic structure, adjusting the length of the telescopic structure allows for adjustment of the distance between the drive element and the first support structure, i.e., adjustment of the angle between the drive element and the base. This facilitates adjustment of the drive angle according to the user's habits, thereby improving the ease of use of the transport device. And / or, by setting a sliding element, the transport device can be driven to slide on the road surface, thereby improving the ease of movement of the transport device.

[0034] In one alternative implementation, the telescopic structure includes:

[0035] The housing includes a third hollow structure, the housing is hinged to the first support structure, and the side of the housing is provided with a plurality of first through holes;

[0036] A telescopic element, one end of which is hinged to the driving element, and the other end of which is sleeved in the third hollow structure and can move along the length of the third hollow structure. The side of the telescopic element is provided with a second through hole corresponding to the first through hole.

[0037] A fixing element is inserted through the first through hole and the second through hole to form a positional positioning between the housing and the telescopic element.

[0038] Beneficial effects: By setting up a shell and a telescopic element, the telescopic element can slide along the third hollow structure inside the shell. After the position of the telescopic element is determined, the relative position between the telescopic element and the shell is fixed by passing a fixing element through the first through hole of the shell and the second through hole of the telescopic element. This telescopic structure has the technical advantages of simple structure and easy implementation.

[0039] In one optional implementation, the first support structure includes:

[0040] Multiple first support units are spaced apart along the extension direction of the base, and the first support unit is provided with the first surface;

[0041] The second support unit is fixedly connected to multiple first support units;

[0042] And / or, a protective element, disposed on the outside of the first surface, at least covering a portion of the structure of the first surface, for protecting the item to be transported.

[0043] Beneficial effects: By setting multiple first support units and fixing their positions with second support units, the connection points of the multiple first support units can be increased, thereby improving the transport stability of the transport device. And / or, by setting protective elements, the contact area between the transport device and the transported item can be increased, thereby increasing the support force of the transport device on the transported item and improving the reliability of the transport device. Attached Figure Description

[0044] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0045] Figure 1 This is a schematic diagram of the structure of a transportation device according to this embodiment;

[0046] Figure 2for Figure 1 The side view of the transport device shown;

[0047] Figure 3 This is a schematic diagram of the driving structure in this embodiment;

[0048] Figure 4 for Figure 3 A magnified view of part B in the diagram.

[0049] Explanation of reference numerals in the attached figures:

[0050] 1. Base;

[0051] 2. First support structure; 201. First surface; 202. First support unit; 203. Second support unit; 204. Protective element; 205. Third support unit; 206. Fourth support unit;

[0052] 3. Second support structure; 301. Second surface;

[0053] 4. Buffer structure; 403. Elastic element;

[0054] 5. Limiting structure; 501. Limiting groove; 502. First limiting element; 503. Second limiting element;

[0055] 6. Drive structure; 601. Drive element;

[0056] 602. Telescopic structure; 6021. Housing; 6022. Telescopic element; 6023. Fixing element;

[0057] 603. Sliding element. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0059] The following is combined Figures 1 to 4 The following describes embodiments of the present invention.

[0060] According to an embodiment of the present invention, a transportation device is provided, comprising:

[0061] Base 1;

[0062] The first support structure 2 is located above the base 1, and the first support structure 2 is provided with a first surface 201;

[0063] The second support structure 3 is located above the base 1 and on one side of the first support structure 2. One end of the second support structure 3 is hinged to the first support structure 2. The end of the second support structure 3 closer to the first support structure 2 is positioned closer to the base 1 than the other end. The second support structure 3 is provided with a second surface 301. The second surface 301 and the first surface 201 form an accommodating space for supporting the items to be transported.

[0064] Buffer structure 4 is disposed between base 1 and second support structure 3, and buffer structure 4 includes:

[0065] The elastic element 403 is connected at one end to the second support structure 3 and at the other end to the base 1.

[0066] In the transportation device of this embodiment, by setting one end of the second support structure 3 closer to the first support structure 2 relative to the other end closer to the base 1, that is, the height of the second surface 301 of the second support structure 3 away from the first support structure 2 is higher than the height of the end closer to the first support structure 2, the second surface 301 is inclined towards the first support structure 2. The item to be transported is located in the accommodating space formed by the first surface 201 of the first support structure 2 and the second surface 301 of the second support structure 3. The second surface 301 can act as a barrier to the item to be transported, thus limiting the position of the item and improving the stability of the position limitation. At the same time, by setting the buffer structure 4, when passing through uneven road surfaces, the buffer structure 4 can absorb the vibration of the item to be transported, preventing damage to the item and thus improving the safety of transporting the item.

[0067] The meaning of "the second support structure 3 is positioned closer to the first support structure 2 at one end than the other end closer to the base 1" is: with Figure 2 Taking the second support structure 3 on the left as an example, the right end of the second support structure 3 is the end closest to the first support structure 2. Compared to the left end of the second support structure 3, i.e., the other end of the second support structure 3, the right end of the second support structure 3 is closer to the base 1, so that the second surface 301 of the second support structure 3 is inclined from left to right towards the first support structure 2, which can form a support for the items to be transported along the... Figure 2 The horizontal obstruction shown in the figure blocks the item to be transported within the accommodating space formed by the first surface 201 and the second surface 301, thereby achieving the technical effect of improving the positional stability of the item to be transported.

[0068] In this embodiment, the item to be transported is curtain wall glass. Of course, in other embodiments, the type of item to be transported can be changed or adjusted depending on the actual type of item being transported.

[0069] In addition, combined Figure 2 As shown, in this embodiment, one end of the second support structure 3 is hinged to the first support structure 2. Based on this, when the buffer structure 4 performs a buffering operation on the item to be transported, the second support structure 3 can move relative to the first support structure 2, that is, move closer to or away from the base 1, so as to avoid the base 1 giving the item to be transported an impact force, thereby achieving the technical effect of improving the transportation safety of the item to be transported.

[0070] Specifically, the hinge position of the second support structure 3 and the first support structure 2 can extend to the second surface 301, that is, the hinge position of the second support structure 3 and the first support structure 2 is located on the same plane as the second surface 301. This can prevent the items to be transported from being located in the accommodating space between the first surface 201 and the second surface 301, where the hinge position and the second surface 301 are not on the same horizontal plane, which would cause the items to be transported to collide and break. This achieves the technical effect of improving the transport stability of the items to be transported.

[0071] In addition, buffer structure 4 includes:

[0072] The elastic element 403 is connected at one end to the second support structure 3 and at the other end to the base 1. Based on this, when the transport device travels over uneven roads, the elastic deformation of the elastic element 403 can absorb the impact on the second support structure 3, thereby achieving the technical effect of improving the protection of the second support structure 3.

[0073] Specifically, the elastic element 403 can be a spring. Since springs are readily available, the ease of obtaining the elastic element 403 can be improved, thereby achieving the technical effect of improving the ease of processing the transport device. As an alternative implementation, the elastic element 403 can also be other cushioning structures 4, such as rubber or foam.

[0074] In addition, combined Figure 2 As shown, in this embodiment, the transport device includes:

[0075] A limiting structure 5, mounted on the second support structure 3, is used to limit the position of the item to be transported. Based on this, the limiting structure 5 can limit the position of the item to be transported, specifically limiting the item's movement along... Figure 2 The horizontal position shown is designed to improve the stability of the position of the items to be transported, thereby enhancing the technical effect of improving the safety of transporting the items.

[0076] Among them, combined Figure 2 As shown, the limiting structure 5 includes:

[0077] Multiple limiting grooves 501 are provided on the second surface 301;

[0078] The first limiting element 502 is engaged with the limiting groove 501.

[0079] The first limiting element 502 engages with one of the multiple limiting slots 501, i.e. Figure 2 Taking the first limiting element 502 on the left as an example, the first limiting element 502 engages with the limiting groove 501 closest to the left edge of the item to be transported. Based on this, the degree of freedom of the item to be transported can be limited, and the edge position of the item to be transported can be limited, so as to achieve the technical effect of improving the positional stability of the first limiting element 502.

[0080] Specifically, the first limiting element 502 is a block structure. The first limiting element 502 and the limiting groove 501 are connected by an insertion, which realizes the snap-fit ​​between the first limiting element 502 and the limiting groove 501. This snap-fit ​​method has the technical effect of simple structure and easy operation.

[0081] Furthermore, the limiting structure 5 also includes a plurality of second limiting elements 503 disposed on the second surface 301, with the second limiting elements 503 protruding from the second surface 301. The second limiting elements 503 can serve as a structure to increase the friction between the item to be transported and the second surface 301, thereby improving the positional stability of the item to be transported. Moreover, the second limiting elements 503 can also serve as a guide for the item to be transported along... Figure 2 The second side 301 shown is a limiting point in the extending direction, meaning the item to be transported can be placed... Figure 2 The same technical effect of improving the positional stability of the item to be transported can be achieved by placing the first surface 201 between itself and the nearest second limiting element 503, or by placing the item to be transported between adjacent second limiting elements 503.

[0082] Of course, in other embodiments, only the second limiting element 503 or only the limiting groove 501 and the first limiting element 502 can be provided, which can also achieve the technical effect of limiting the stability of the position of the transported item.

[0083] In other embodiments, the first limiting element 502 and the limiting groove 501 can also be connected by a snap fastener, which can also achieve the technical effect of limiting the position of the item to be transported.

[0084] In addition, combined Figure 1 As shown, the transport device includes:

[0085] The drive structure 6 is mounted on the base 1 and the first support structure 2 and is used to drive the movement of the transport device.

[0086] Based on this, it is convenient for external forces to drive the movement of the transport device through the drive structure 6, thereby achieving the technical effect of improving the ease of driving the transport device.

[0087] Of course, in other embodiments, depending on the design of the transport device, the drive device may be connected only to the base 1 or only to the first support structure 2 to achieve the technical effect of facilitating the movement of the transport device.

[0088] Furthermore, combined Figure 2 , Figure 3 and Figure 4 As shown, the drive structure 6 includes:

[0089] The drive element 601 is hinged at one end to the base 1;

[0090] The telescopic structure 602 is hinged at one end to the drive element 601 and at the other end to the first support structure 2, and is used to adjust the drive angle of the drive element 601.

[0091] The sliding element 603 is located on the bottom surface of the base 1.

[0092] Since one end of the drive element 601 is hinged to the base 1, and the drive element 601 is also hinged to the telescopic structure 602, adjusting the length of the telescopic structure 602 allows for adjustment of the distance between the drive element 601 and the first support structure 2, i.e., adjustment of the angle between the drive element 601 and the base 1. This facilitates adjustment of the drive angle according to the user's habits, thereby improving the ease of use of the transport device. Simultaneously, the sliding element 603 enables the transport device to slide on the road surface, further enhancing the ease of movement of the transport device.

[0093] Specifically, in this embodiment, combined with Figure 3 As shown, the drive element 601 includes a connecting rod and a drive handle. The bottom end of the connecting rod is hinged to the base 1, the drive handle is located at the top of the connecting rod, and the sliding element 603 is a caster wheel. As an alternative implementation, the drive element 601 can also be a push plate, and the sliding element 603 can be a regular pulley.

[0094] Of course, in other embodiments, the drive structure 6 may only be provided with the sliding element 603, or only with the drive element 601 and the telescopic structure 602, to achieve the drive of the transport device.

[0095] Furthermore, combining Figure 4 As shown, the telescopic structure 602 includes:

[0096] The housing 6021 includes a third hollow structure. The housing 6021 is hinged to the first support structure 2. The side of the housing 6021 is provided with a plurality of first through holes.

[0097] The telescopic element 6022 has one end hinged to the drive element 601, and the other end of the telescopic element 6022 is sleeved in the third hollow structure and can move along the length of the third hollow structure. The side of the telescopic element 6022 is provided with a second through hole corresponding to the first through hole.

[0098] The fixing element 6023 is inserted through the first through hole and the second through hole to form a positional positioning between the housing 6021 and the telescopic element 6022.

[0099] The telescopic structure 602 adjusts its length by sliding the telescopic element 6022 along the length of the housing 6021 and adjusting the length of the telescopic element 6022 within the housing 6021. Once the position of the telescopic element 6022 is determined, the fixing element 6023 passes through the first through hole of the housing 6021 and the second through hole of the telescopic element 6022 to fix the relative position between the telescopic element 6022 and the housing 6021. This telescopic structure 602 has the advantages of simple structure and easy implementation.

[0100] Specifically, the fixing element 6023 includes a threaded bolt and a nut. The bolt passes through the first through hole and the second through hole and is threadedly connected to the nut to fix the position between the housing 6021 and the telescopic element 6022. The bolt and nut are standard parts and are easy to obtain, thereby achieving the technical effect of improving the ease of processing of the transportation device.

[0101] Of course, in other embodiments, depending on the design of the transport device, the construction of the telescopic structure 602 can be adjusted to adjust the included angle between the drive element 601 and the base 1, all of which are within the protection scope of this utility model.

[0102] In addition, combined Figure 1 and Figure 2 As shown, in this embodiment, the first support structure 2 includes:

[0103] Multiple first support units 202 are spaced apart along the extension direction of the base 1, and a first surface 201 is provided on the first support unit 202;

[0104] The second support unit 203 is fixedly connected to the plurality of first support units 202;

[0105] The protective element 204 is located on the outside of the first surface 201 and covers at least part of the structure of the first surface 201 to protect the items to be transported.

[0106] By setting multiple first support units 202 and fixing their positions with second support units 203, the connection points of the multiple first support units 202 can be increased, thereby improving the transport stability of the transport device. Simultaneously, by setting a protective element 204, the contact area between the transport device and the transported item can be increased, thereby enhancing the support force of the transport device on the transported item and improving the reliability of the transport device.

[0107] In this embodiment, the first support unit 202 includes a first support element arranged in a "Λ" shape. Based on this, items to be transported can be set on both the left and right sides of the "Λ" shaped first support element at the same time, thereby achieving the technical effect of improving transportation efficiency.

[0108] Of course, in other embodiments, the items to be transported may be placed only on one side of the first support element. Compared to other embodiments, in this embodiment, distributing the items to be transported on both sides of the first support element can improve the balance of forces during transportation, thereby achieving the technical effect of improving the operational stability of the transportation device.

[0109] Furthermore, combined Figure 1 As shown, in this embodiment, the first support structure 2 includes:

[0110] The third support unit 205 is located inside the first support element, forming an "A" shape with the "Λ"-shaped first support element, and is hinged to the housing 6021. The third support unit 205 can further enhance the structural strength of the first support element, thereby achieving the technical effect of improving the structural stability of the transportation device.

[0111] In other embodiments, depending on the design of the first support structure 2, only the protective element 204 may be provided, or only multiple first support units 202 and second support units 203 may be provided.

[0112] Furthermore, in this embodiment, the protective element 204 is a protective plate that can be connected to multiple first support elements. The bottom end of the protective element 204 is located on the upper part of the first support element, that is, the protective element 204 only covers the upper part of the first support element, which can increase the contact area between the first support unit 202 and the item to be transported. Moreover, the protective plate is made of a rigid material, such as an alloy structure, which can achieve the technical effect of improving the support of the item to be transported.

[0113] Further, preferably, combined with Figure 1 As shown, since the first support element is arranged in a "Λ" shape, at least two protective elements 204 are provided, and they are located along the second support unit 203. Figure 2The two protective elements 204 are arranged symmetrically with respect to the second support unit 203 to provide support and protection for the items to be transported on each side. Furthermore, by providing a fourth support unit 206 between the two symmetrically arranged protective elements 204, the position of the two protective elements 204 can be further fixed, thereby further enhancing the structural strength of the transport device.

[0114] Of course, in other embodiments, the protective element 204 can also be a mesh structure, and the bottom end of the protective element 204 can also be located at the lower part of the first support element. Its position does not affect the buffering movement of the second support structure 3, and the same technical effect of improving the support of the transported items can be achieved.

[0115] In addition, in this embodiment, the first support element, the second support unit 203, the third support unit 205 and the fourth support unit 206 are all rod-shaped structures.

[0116] Of course, in other embodiments, the first support element, the second support unit 203, the third support unit 205 and the fourth support unit 206 may also be a support plate.

[0117] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A transport device, characterized in that, include: Base (1); A first support structure (2) is provided above the base (1), and a first surface (201) is provided on the first support structure (2); The second support structure (3) is located above the base (1) and on one side of the first support structure (2). One end of the second support structure (3) is hinged to the first support structure (2). The end of the second support structure (3) closer to the first support structure (2) is located closer to the base (1) than the other end. The second support structure (3) has a second surface (301). The second surface (301) and the first surface (201) form a accommodating space for supporting the items to be transported. A buffer structure (4) is disposed between the base (1) and the second support structure (3), the buffer structure (4) comprising: The elastic element (403) is connected at one end to the second support structure (3) and at the other end to the base (1).

2. The transport device according to claim 1, characterized in that, include: A limiting structure (5) is provided on the second support structure (3) to limit the position of the item to be transported.

3. The transport device according to claim 2, characterized in that, The limiting structure (5) includes: Multiple limiting grooves (501) are provided on the second surface (301); The first limiting element (502) engages with the limiting groove (501); And / or, the limiting structure (5) includes a plurality of second limiting elements (503) disposed on the second surface (301), and the second limiting elements (503) protrude from the second surface (301).

4. The transport device according to claim 1, characterized in that, include: A drive structure (6) is disposed on the base (1) and / or the first support structure (2) for driving the movement of the transport device.

5. The transport device according to claim 4, characterized in that, The driving structure (6) includes: The driving element (601) is hinged at one end to the base (1); The telescopic structure (602) is hinged at one end to the driving element (601) and at the other end to the first support structure (2), and is used to adjust the driving angle of the driving element (601). And / or, a sliding element (603) is provided on the bottom surface of the base (1).

6. The transport device according to claim 5, characterized in that, The telescopic structure (602) includes: The housing (6021) includes a third hollow structure, the housing (6021) is hinged to the first support structure (2), and the side of the housing (6021) is provided with a plurality of first through holes; The telescopic element (6022) is hinged at one end to the driving element (601), and the other end of the telescopic element (6022) is sleeved in the third hollow structure and can move along the length direction of the third hollow structure. The side of the telescopic element (6022) is provided with a second through hole corresponding to the first through hole. A fixing element (6023) is inserted through the first through hole and the second through hole to form a positional positioning between the housing (6021) and the telescopic element (6022).

7. The transport device according to claim 1, characterized in that, The first support structure (2) includes: Multiple first support units (202) are spaced apart along the extension direction of the base (1), and the first support unit (202) is provided with the first surface (201); The second support unit (203) is fixedly connected to a plurality of the first support units (202); And / or, a protective element (204) is disposed on the outside of the first surface (201), covering at least a portion of the structure of the first surface (201), for protecting the item to be transported.

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