A multi-story freight warehouse straddling lines within a railway logistics base

Abstract

The present invention discloses an overline multi-layer freight warehouse in a railway logistics base, comprising: a railway transfer layer for transferring goods, the railway transfer layer includes two platform units, a train track unit is formed between the two platform units, and a first road transportation unit is formed on each of the opposite sides; a road transportation layer is arranged above the railway transfer layer, the road transportation layer includes a first goods storage unit and two second road transportation units, the two second road transportation units are arranged in one-to-one correspondence with the two first road transportation units, and the first goods storage unit is used for storing temporary goods; a goods storage layer is arranged above the road transportation layer, the goods storage layer includes a plurality of second goods storage units, and the second goods storage units are used for storing long-term goods. The present invention aims to solve the problems of low land development and utilization rate of existing railway logistics bases, insufficient area of on-line warehouses, loose connection of multimodal transport, and difficult warehouse layout to meet market demands.

Description

Technical Field

[0001] The present invention relates to the technical field of railway transportation, and particularly to an overline multi - layer freight warehouse in a railway logistics base. Background Art

[0002] Railway logistics bases are key nodes of railway freight transportation and an important component of railway freight operations. Currently, the common layout of express warehouses in China is a single - layer layout for railway warehouses. One side of the warehouse is adjacent to the railway track, and the other side is adjacent to the road transportation side to achieve functions such as cargo transfer and warehousing. With the accelerated development of China's urbanization process, urban planning has put forward higher requirements for the intensive use of land in logistics bases, especially in southeastern coastal cities, which have set new standards for the economic output of land. Generally, railway freight yards cover a large area, but currently, the traditional warehouse layout mode has warehouses on both sides of the railway line and is all single - layer layout. The space above the tracks and above the warehouses is difficult to utilize, resulting in a large amount of resource waste. Goods for multimodal transport warehousing need to be transferred through railway freight platforms and then transported to road freight warehouses, with low logistics efficiency and high transfer costs. Moreover, the limited resources of the on - line warehouses are difficult to meet the needs of large express companies for large - scale and high - standard on - line warehouses, and cannot well adapt to market demands. Making full use of and expanding warehouse space resources under limited land resources to achieve high - efficiency development of multimodal transport is an urgent problem to be solved in current logistics bases and freight yards. Summary of the Invention

[0003] The main object of the present invention is to propose an overline multi - layer freight warehouse in a railway logistics base, aiming to solve the problems of low land development and utilization rate in existing railway logistics bases, insufficient area of on - line warehouses, loose connection of multimodal transport, and difficult warehouse layout to meet market demands.

[0004] To achieve the above object, the present invention provides an overline multi - layer freight warehouse in a railway logistics base, including:

[0005] A railway transfer layer for transferring goods. The railway transfer layer includes two platform units oppositely arranged in the left - right direction. A train track unit is formed between the two platform units, and a first road transportation unit is formed on each side of the two platform units facing away from each other;

[0006] A road transportation layer is arranged above the railway transfer layer. The road transportation layer includes a first cargo storage unit and two second road transportation units. The two second road transportation units are respectively arranged on the left - right sides of the first cargo storage unit and are arranged in one - to - one correspondence with the two first road transportation units. The first cargo storage unit is used for storing temporary goods; and,

[0007] The goods storage layer is arranged above the road transportation layer. The goods storage layer includes a plurality of second goods storage units stacked in sequence in the up-and-down direction, and the second goods storage units are used for storing long-term goods.

[0008] Optionally, each of the platform units includes a temporary warehouse. A railway platform is formed on one side of the temporary warehouse close to the train track unit, and a road platform is formed on the other side. The temporary warehouse is used for temporarily storing goods.

[0009] Optionally, the train track unit and the temporary warehouse form a first unit;

[0010] The first goods storage unit is located above the first unit.

[0011] Optionally,

[0012] The multi-story freight warehouse with cross lines in the railway logistics base further includes a plurality of first vertical conveying devices. The plurality of first vertical conveying devices are arranged at intervals in the left-right direction, and each of the first vertical conveying devices penetrates through the temporary warehouse, the first goods storage unit and the plurality of second goods storage units in the up-and-down direction;

[0013] The first vertical conveying device is used to transfer the goods on the railway transfer layer to the road transportation layer or the goods storage layer.

[0014] Optionally, each of the first vertical conveying devices includes:

[0015] A conveying support, arranged on the platform unit, and the upper end of the conveying support sequentially passes through the first goods storage unit and the plurality of second goods storage units;

[0016] A carrying platform, movably installed on the transport support in the up-and-down direction, for carrying goods; and,

[0017] A driving device, drivingly connected to the carrying platform, for driving the carrying platform to move in the up-and-down direction.

[0018] Optionally, the multi-story freight warehouse with cross lines in the railway logistics base further includes a second vertical conveying device, and the second vertical conveying device penetrates through the first goods storage unit and the plurality of second goods storage units in the up-and-down direction;

[0019] Wherein, the second vertical conveying device is used to transfer the goods on the road transportation layer to the goods storage layer.

[0020] Optionally, the goods storage layer further includes a plurality of first horizontal conveying devices, and the plurality of first horizontal conveying devices are arranged between each of the first vertical conveying devices and the second vertical conveying device for transferring goods.

[0021] Optionally, each of the first horizontal conveying devices includes a guide rail and a trolley. The guide rail is laid between the first vertical conveying device and the second vertical conveying device, and the trolley is movably arranged on the guide rail.

[0022] Optionally, each of the second road transportation units includes a road carrying platform and a road. The road carrying platform is arranged above the corresponding first road transportation unit. One end of the road is connected to the road carrying platform, and the other end is connected to the corresponding first road transportation unit. The road carrying platform is used for trucks to dock.

[0023] Optionally, the railway transportation layer further includes at least one second horizontal conveying device for transferring the goods in the train track unit to the platform unit; and / or,

[0024] The road transportation layer further includes at least one third horizontal conveying device for transferring the goods in the first goods storage unit to each of the second road transportation units.

[0025] In the technical solution of the present invention, the multi - storey freight warehouse with cross - line in the railway logistics base adopts a multi - storey structure. Compared with the traditional railway siding warehouse (one - storey warehouse), the storage area is greatly increased on the same land area, improving the land utilization rate. Moreover, there is no mutual interference between railway transportation and road transportation, with high intermodal transportation efficiency, many turnover times, fast logistics speed, saving logistics costs to a certain extent, and improving material efficiency. Specifically, in the actual transfer process, when the train arrives at the station, the goods on the train are transported to the two platform units. The goods that need to be transported away immediately are directly transported away through the first road transportation unit adjacent to the two platform units. Some goods are temporary goods, which are transferred to the first goods storage unit for storage. When needed for transportation, they are directly transported through the second road transportation unit without having to be transported to the railway transfer layer for various transports again, improving the transportation efficiency. Some goods are long - term goods, which are transferred to the second goods storage unit for storage. When transfer is needed, they are then selectively transferred to the railway transfer layer or the road transportation layer for transportation according to the means of transportation. With such an arrangement, the space above the train track unit is reasonably utilized, and at the same time, in cooperation with the first road transportation unit and the second road transportation unit, the loading and unloading capacity is improved, the intermediate links are reduced, and seamless multi - modal transportation is achieved. Description of the Drawings

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on the structures shown in these drawings.

[0027] Figure 1 This is a schematic structural diagram of an embodiment of a multi - layer freight warehouse straddling lines in a railway logistics base provided by the present invention.

[0028] Explanation of the reference numerals in the drawings:

[0029]

[0030] The realization of the object of the present invention, its functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings. Specific embodiments

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0032] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present invention, these directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If this specific posture changes, the directional indications will also change accordingly.

[0033] In addition, if there are descriptions such as "first", "second", etc. in the embodiments of the present invention, these "first", "second", etc. descriptions are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel scenarios. Taking "A and / or B" as an example, it includes scenario A, or scenario B, or the scenario where A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0034] Railway logistics bases are key nodes of railway freight transportation and an important component of railway freight operations. Currently, the common layout of express warehouses in China is a single-story layout for railway warehouses, with one side of the warehouse adjacent to railway tracks and the other side adjacent to the road transportation side, to achieve functions such as cargo transfer and warehousing. With the accelerating development of China's urbanization process, urban planning has put forward higher requirements for the intensive use of land in logistics bases, especially in southeastern coastal cities, which have set new standards for the economic output of land. Generally, railway freight yards cover a large area, but currently, in the traditional warehouse layout mode, the warehouses are located on both sides of the railway line and are all single-story layouts. The space above the tracks and above the warehouses is difficult to utilize, resulting in a large amount of resource waste. Goods for multimodal transport warehousing need to be transferred through the railway freight platform and then transported to the road freight warehouse, with low logistics efficiency and high transfer costs. Moreover, the limited resources of the warehouses adjacent to the line are difficult to meet the needs of large express companies for large-scale and high-standard warehouses adjacent to the line, and cannot well adapt to the market demand. Making full use of and expanding the warehouse space resources under limited land resources to achieve the high-efficiency development of multimodal transport is an urgent problem to be solved in current logistics bases and freight yards.

[0035] In view of this, the present invention provides a multi-story freight warehouse straddling the line within a railway logistics base. Figure 1 The following is an embodiment of the multi-story freight warehouse straddling the line within the railway logistics base provided by the present invention. The multi-story freight warehouse straddling the line within the railway logistics base will be mainly described below with reference to specific drawings.

[0036] Please refer to Figure 1 , the multi-story freight warehouse 100 straddling the line within the railway logistics base includes a railway transfer layer 1, a road transportation layer 2, and a cargo storage layer 3; the railway transfer layer 1 is used for transferring goods, and the railway transfer layer 1 includes two platform units 11 arranged opposite to each other in the left-right direction. A train track unit 12 is formed between the two platform units 11. On the opposite sides of the two platform units 11, a first road transportation unit 13 is formed on each side; the road transportation layer 2 is arranged above the railway transfer layer 1, and the road transportation layer 2 includes a first cargo storage unit 21 and two second road transportation units 22. The two second road transportation units 22 are respectively arranged on the left and right sides of the first cargo storage unit 21 in the left-right direction and are arranged in one-to-one correspondence with the two first road transportation units 13. The first cargo storage unit 21 is used for storing temporary goods; the cargo storage layer 3 is arranged above the road transportation layer 2, and the cargo storage layer 3 includes a plurality of second cargo storage units 31 stacked in sequence in the up-down direction. The second cargo storage units 31 are used for storing long-term goods.

[0037] In the technical solution of the present invention, the multi-story freight warehouse 100 across the line in the railway logistics base adopts a multi-story structure. Compared with the traditional railway side-line warehouse (one-story warehouse), it greatly improves the storage area on the same land area, improves the land utilization rate, and there is no mutual interference between railway transportation and road transportation. It has high intermodal transportation efficiency, many turnover times, fast logistics speed, saves logistics costs to a certain extent, and improves material efficiency. Specifically, in the actual transfer process, when the train arrives at the station, the goods on the train are transported to the two platform units 11. The goods that need to be transported immediately are directly transported away by the first road transportation unit 13 adjacent to the two platform units 11. Some goods are temporary goods, which are transferred to the first goods storage unit 21 for storage. When they need to be transported, they are directly transported by the second road transportation unit, without the need to be transported to the railway transfer layer 1 for various transports again, improving the transportation efficiency. Some goods are long-term goods, which are transferred to the second goods storage unit 31 for storage. When they need to be transferred, they are selectively transferred to the railway transfer layer 1 or the road transportation layer 2 for transportation according to the transportation means. With such a setting, the space above the train track unit 12 is reasonably utilized, and at the same time, in cooperation with the first road transportation unit 13 and the second road transportation unit 22, the loading and unloading capacity is improved, the intermediate links are reduced, and seamless multimodal transportation is achieved.

[0038] Please continue to refer to Figure 1 Each of the platform units 11 includes a temporary warehouse 111. A railway platform 112 is formed on one side of the temporary warehouse 111 close to the train track unit 12, and a road platform 113 is formed on the other side. The temporary warehouse 111 is used for temporarily storing goods. Specifically, in this embodiment, the platform unit 11 includes a platform and a temporary warehouse 111. The temporary warehouse 111 is arranged on the platform. When the train travels into the train track unit 12, all the goods in the train are transported into the temporary warehouse 111, and classification is carried out in the temporary warehouse 111. Some goods that need to be directly transported are directly stored in the temporary warehouse 111 and then transported to the road platform 113 and directly transported away by the trucks on the first road transportation unit 13. The part of the temporary goods is transferred to the first goods storage unit 21 for storage. Some long-term goods are directly transferred to the second goods storage unit 31 for storage. By reasonably arranging the train track unit 12 and the first road transportation unit 13, the storage area is greatly improved on the same land area. At the same time, by reasonably arranging the positional relationship, the two do not affect each other, improving the transportation efficiency.

[0039] Further, please continue to refer to Figure 1. The train track unit 12 and the temporary warehouse 111 form a first unit; the first cargo storage unit 21 is located above the first unit. Conventional railway freight warehouses are arranged in a single layer and on both sides of the railway loading and unloading lines. Due to the requirement for the lateral width of the cargo warehouse, the total area of the warehouse is limited, and the adjacent railway loading and unloading resources are limited, making it difficult to fully utilize the railway loading and unloading line resources. The warehouse area also restricts the development of large direct trains and other services in railway freight. Secondly, the space above the train track unit 12 in traditional railways is often left idle without reasonable utilization, thus limiting the total area of the warehouse. In this embodiment, the first cargo storage unit 21 is arranged above the first unit, reasonably utilizing the space above the train track unit 12, increasing the effective usable area of the multi-level cross-line freight warehouse 100 in the railway logistics base, greatly improving the storage area on the same land area, and improving the land utilization rate.

[0040] Please continue to refer to Figure 1 , the multi-level cross-line freight warehouse 100 in the railway logistics base further includes a plurality of first vertical conveying devices 4. The plurality of first vertical conveying devices 4 are arranged at intervals in the left-right direction, and each of the first vertical conveying devices 4 penetrates through the temporary warehouse 111, the first cargo storage unit 21, and the plurality of second cargo storage units 31 in the up-down direction; the first vertical conveying device 4 is used to transfer the goods on the railway transfer layer 1 to the road transportation layer 2 or the cargo storage layer 3. In this embodiment, after the railway train arrives, the goods are unloaded from the train and transferred to the temporary warehouse 111 through the railway platform 112. If the goods are to be transferred out in the short term, they are directly moved to the road platform 113, and then the goods are loaded and unloaded onto the trucks on the first road transportation unit 13 through the road platform 113. If the goods need to be stored for a period of time, the goods are transported to the first cargo storage unit 21 or the second cargo storage unit 31 through the plurality of first vertical conveying devices 4. The setting of the first vertical conveying device 4 facilitates the transportation of goods, avoiding the centralized accumulation of goods and causing chaos in warehouse storage.

[0041] Further, the specific type of the first vertical conveying device 4 is not limited as long as it can convey goods. Specifically, in this embodiment, each of the first vertical conveying devices 4 includes a conveying support, a carrying platform, and a driving device; the conveying support is disposed on the platform unit 11, and the upper end of the conveying support sequentially passes through the first goods storage unit 21 and a plurality of the second goods storage units 31; the carrying platform is movably installed on the conveying support in the vertical direction for carrying goods; the driving device is drivingly connected to the carrying platform for driving the carrying platform to move in the vertical direction. Specifically, when goods need to be transported to the first goods storage unit 21 or the second goods storage unit 31, the operator first transports the goods to the carrying platform, and the driving device drives the carrying platform to move so as to realize the transportation of the goods; further, the driving device is a driving motor, and the first vertical conveying device 4 further includes a pulley structure. The carrying platform is fixed on the support through the pulley structure, and the driving motor is drivingly connected to the pulley structure. By driving the pulley structure, the carrying platform is driven to move. Specifically, the specific connection manner and the specific working principle of the carrying platform, the pulley structure, and the driving motor may refer to the conventional settings in the art, and will not be elaborated herein one by one.

[0042] It should be noted that a second road transportation unit 22 is provided in the road transportation layer 2. Sometimes, the goods in the second goods storage unit 31 only need to be transported by road and do not need to be transported by rail. Therefore, the goods in the second goods storage unit 31 only need to be transported to the second road transportation unit 22 for conveying. Specifically, in this embodiment, please continue to refer to Figure 1 , the multi-story freight warehouse 100 with cross-line in the railway logistics base further includes a second vertical conveying device 5. The second vertical conveying device 5 is disposed through the first goods storage unit 21 and a plurality of the second goods storage units 31 in the vertical direction; wherein, the second vertical conveying device 5 is used to transfer the goods in the road transportation layer 2 to the goods storage layer 3. With such a setting, the spatial layout is reasonably utilized, which neither affects the transfer work of the railway transfer layer 1 nor affects the transportation of the goods in the second goods storage unit 31, separates the railway goods and the road goods, and realizes the intensive utilization of the warehouse.

[0043] Please continue to refer to Figure 1, in this embodiment, the goods storage layer 3 further includes a plurality of first horizontal conveying devices 6. The plurality of first horizontal conveying devices 6 are arranged between each of the first vertical conveying devices 4 and the second vertical conveying devices 5 for transferring goods. When the railway train arrives, the goods on the train are concentrated for loading and unloading at the railway platform 112, and the goods are loaded and unloaded onto the plurality of first horizontal conveying devices 6, and then transported by the plurality of first horizontal conveying devices 6. With such an arrangement, the transportation of goods is made more automated, improving the goods transportation capacity.

[0044] Further, in this embodiment, each of the first horizontal conveying devices 6 includes a guide rail and a trolley. The guide rail is laid between the first vertical conveying device 4 and the second vertical conveying device 5, and the trolley is movably arranged on the guide rail. During the actual transportation process, guide rails are laid on the ground of the temporary warehouse 111, the railway platform 112 and the highway platform 113, and the trolley directly transports along the guide rail during the transportation process. With such an arrangement, it is more automated and improves the goods transportation capacity.

[0045] Please continue to refer to Figure 1 , each of the second highway transportation units 22 includes a highway carrying platform 221 and a road 222. The highway carrying platform 221 is arranged above the corresponding first highway transportation unit 13. One end of the road 222 is connected to the highway carrying platform 221, and the other end is connected to the corresponding first highway transportation unit 13. The highway carrying platform 221 is used for trucks to dock. Specifically, in this embodiment, in order to facilitate the loading of goods in the first goods storage unit 21 or the second goods storage unit 31, a highway carrying platform 221 is set on the highway transportation layer 2 through columns. The highway carrying platform 221 includes two parts: a loading and unloading area and columns. Since the column grid of the highway carrying platform 221 has a certain influence on the loading and unloading and transportation of vehicles, the trucks arranged in the first highway transportation unit 13 are arranged outside the column grid; with such an arrangement, the space is reasonably utilized, the loading and unloading capacity is improved, the intermediate transfer links are reduced, and seamless connection transportation of multimodal transport is realized.

[0046] Please continue to refer to Figure 1 , the railway transportation layer further includes at least one second horizontal conveying device 7 for transferring the goods in the train track unit 12 to the platform unit 11; the highway transportation layer 2 further includes at least one third horizontal conveying device 8 for transferring the goods in the first goods storage unit 21 to each of the second highway transportation units 22. Specifically, the specific structures of the second horizontal conveying device 7 and the third horizontal conveying device 8 are the same as the structure of the first horizontal conveying device 6. Refer to the specific structure of the first horizontal conveying device 6 for details, and they will not be elaborated here one by one.

[0047] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A multi-story freight warehouse straddling lines within a railway logistics base, characterized in that, include: A railway transfer layer, used for transferring goods, the railway transfer layer comprises two platform units arranged opposite to each other in the left and right directions, a train track unit is formed between the two platform units, and a first road transport unit is formed on the opposite sides of the two platform units; a road transport layer, arranged above the railway transfer layer, the road transport layer comprising a first cargo storage unit and two second road transport units, the two second road transport units being arranged on both sides of the first cargo storage unit in the left and right directions and corresponding to the two first road transport units one by one, the first cargo storage unit being used to store temporary cargo; and, A cargo storage layer is arranged above the road transport layer, the cargo storage layer comprises a plurality of second cargo storage units stacked in sequence in an up-and-down direction, the second cargo storage units are used to store long-term cargo; Each of the platform units includes a temporary warehouse, a railway platform is formed on one side of the temporary warehouse close to the train track unit, and a highway platform is formed on the other side, and the temporary warehouse is used for temporarily storing goods; the temporary warehouse is arranged on the platform, and when the train enters the train track unit, all the goods in the train are transported to the temporary warehouse, and are sorted in the temporary warehouse, and some goods that need to be transported directly are directly stored in the temporary warehouse, and then transported to the highway platform, and directly transported by the truck on the first highway transport unit; Part of the temporary goods is transferred to the first goods storage unit for storage; part of the long-term goods is directly transferred to the second goods storage unit for storage; The cross-line multi-layer freight warehouse in the railway logistics base also includes a plurality of first vertical conveying devices, which are arranged at intervals in the left-right direction, and each of the first vertical conveying devices is arranged in the upper and lower directions to penetrate the temporary warehouse, the first cargo storage unit and the plurality of the second cargo storage units; The first vertical transport device is used to transfer the cargo from the railway transfer layer to the road transport layer or the cargo storage layer; The cross-line multi-layer freight warehouse in the railway logistics base further includes a second vertical conveying device, which is arranged to penetrate the first cargo storage unit and the plurality of the second cargo storage units in the up-down direction; Wherein, the second vertical conveying device is used to transfer the cargo from the road transport layer to the cargo storage layer; The cargo storage layer further comprises a plurality of first horizontal conveying devices, which are arranged between each of the first vertical conveying devices and the second vertical conveying devices for transferring cargo; The railway transport layer further comprises at least one second horizontal transport device, the second horizontal transport device being used to transfer the goods in the train track unit to the platform unit; and / or, The road transport layer further comprises at least one third horizontal conveying device, and the third horizontal conveying device is used to transfer the cargo in the first cargo storage unit to each of the second road transport units.

2. The multi - storey freight warehouse straddling lines within the railway logistics base according to claim 1, characterized in that, The train track unit and the temporary warehouse constitute the first unit; The first cargo storage unit is located above the first unit.

3. The multi-story freight warehouse straddling lines within the railway logistics base according to claim 1, wherein Each of the first vertical conveying devices includes: A conveying support provided on the platform unit, and the upper end of the conveying support sequentially passes through the first cargo storage unit and a plurality of the second cargo storage units; A carrying platform movably mounted on the conveying support in the vertical direction for carrying goods; and A driving device drivingly connected to the carrying platform for driving the carrying platform to move in the vertical direction.

4. The multi-story freight warehouse straddling lines within the railway logistics base according to claim 1, characterized in that Each of the first horizontal conveying devices includes a guide rail and a trolley, the guide rail is laid between the first vertical conveying device and the second vertical conveying device, and the trolley is movably disposed on the guide rail.

5. The multi-story freight warehouse straddling lines within the railway logistics base according to claim 1, characterized in that, Each of the second road transportation units includes a road carrying platform and a road, the road carrying platform is disposed above the corresponding first road transportation unit, one end of the road is connected to the road carrying platform, and the other end is connected to the corresponding first road transportation unit, and the road carrying platform is used for a truck to dock.

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