Refrigeration equipment for cold-chain logistics engineering and mounting method of refrigeration equipment

Abstract

The invention relates to the field of cold chain transportation, in particular to refrigeration equipment for cold chain logistics engineering and an installation method thereof.The refrigeration equipment comprises a compartment body installed on a cold chain vehicle and is characterized in that a refrigeration cabinet, the refrigeration equipment, a compartment door and a side door are arranged on the compartment body, and the refrigeration cabinet is arranged on the outer side of the compartment body; the refrigeration equipment is arranged on the inner side of the compartment body and communicates with the refrigeration cabinet, and in the actual use process, workers can enter the compartment body by opening the side door with the relatively small area. After entering, personnel can directly act on the conveying mechanism on the functional part and go in and out through the side door to carry out tallying or auxiliary operation, and goods are conveyed outwards through the conveying mechanism and the window of the thermal insulation cavity. Due to the fact that the opening frequency of the side door is high, the single opening area is small, and the core cooling capacity of the main goods storage area is not directly interfered, the full-open state of the cabin door caused by people entering and exiting is greatly reduced, and instant leakage of a large amount of cold air is effectively avoided.

Description

Technical Field

[0001] This invention relates to the field of cold chain transportation, specifically to a refrigeration equipment and its installation method for cold chain logistics engineering. Background Technology

[0002] In cold chain logistics engineering, refrigerated trucks are the main mode of transportation. However, the refrigeration system carried by traditional refrigerated trucks can be turned on and off at any time. Although this results in fast cooling speed, it also consumes a lot of energy. Especially during loading and unloading, when loading and unloading personnel frequently open the doors and move goods back and forth, the cold air in the space will be lost rapidly. Therefore, there is a need for a refrigeration device that can effectively reduce the loss of cold air, and there is also a need for an installation method that can install the refrigeration device in the compartment of existing traditional refrigerated trucks to improve the utilization of existing refrigerated trucks. Summary of the Invention

[0003] This invention provides a refrigeration equipment and its installation method for cold chain logistics engineering, which overcomes the shortcomings described in the background art.

[0004] The technical solution adopted by this invention to solve its technical problem is: A refrigeration device for a cold chain logistics project includes a truck body installed on a cold chain vehicle. The truck body is characterized in that it is provided with a refrigeration cabinet, a refrigeration device, a truck door, and a side door. The refrigeration cabinet is located on the outside of the truck body, while the refrigeration device is located on the inside of the truck body and is connected to the refrigeration cabinet. The truck door and the side door are respectively located on two different sides of the truck body. The carriage body is equipped with functional components and thermal insulation components. The functional components are located on the side of the carriage body away from the door, and there is a thermal insulation cavity between the functional components and the door. The thermal insulation components are located in the thermal insulation cavity. The thermal insulation components include symmetrically arranged aerogel layers and curtains. Supporting steel members are provided on both sides of the aerogel layers. Windows are provided on the sides of the supporting steel members. Buffer pads are provided in the windows. The buffer pads abut against the aerogel layers and the supporting steel members respectively. A window for transporting goods is provided between the two aerogel layers. The curtains cover the surface of the windows, and the upper ends of the curtains are connected to the aerogel layers on both sides respectively. The functional component includes a conveying mechanism and a base plate. The base plate is fixed to the bottom of the inner side of the carriage body. The conveying mechanism is located on the surface of the functional component near the heat insulation component, and the conveying mechanism abuts against the window between the two aerogel layers. The conveying mechanism communicates outward through the window. The conveying mechanism is equipped with adjustable conveying ports at both the left and right ends. The two conveying ports are opened and closed by a drive mechanism. When the drive mechanism drives one of the conveying ports to open, the other conveying port gradually closes.

[0005] In a preferred embodiment, the conveying mechanism includes a first isolation chamber, a second isolation chamber, a first partition plate, and a second partition plate. The first partition plate and the second partition plate are respectively disposed on the left and right sides of the second isolation chamber, while the first isolation chamber is disposed on the side of the second isolation chamber near the door. The first partition plate and the second partition plate are symmetrically arranged, and the conveying port is formed when both first partition plates are opened or both second partition plates are opened; The second isolation chamber is connected to the first isolation chamber, and the first isolation chamber is connected to the window.

[0006] A preferred technical solution is that the driving mechanism includes a driving mechanism, which includes a driving gear, a first driven gear, a second driven gear, and a third driven gear. The first driven gear and the second driven gear are respectively meshed on the left and right sides of the driving gear. The surfaces of the first partition plate and the second partition plate are provided with tooth rows. The first driven gear meshes with the tooth rows on the surface of the first partition plate, and the second driven gear meshes with the tooth rows on the surface of the second partition plate through the third driven gear. The conveying mechanism also includes a slide rail and a material transport plate. One end of the slide rail is located inside the second isolation chamber, while the other end extends outside the second isolation chamber. The material transport plate slides on the surface of the slide rail.

[0007] A preferred technical solution is that there is a gap between the lower end of the second partition plate and the surface of the functional component for the material conveying plate to pass through, and baffles are provided on the adjacent surfaces of the two second partition plates, and the two baffles are respectively connected to the surface of the second partition plate through connectors. The connector includes a first fixed shaft, a connecting shaft, and a second fixed shaft. The first fixed shaft is fixed to the surface of the baffle, and the second fixed shaft is fixed to the surface of the second partition plate. The first fixed shaft is movably connected to the second fixed shaft through the connecting shaft, and a spring is provided at the connection end of the connecting shaft and the first fixed shaft. When the spring is stationary, the two baffles are parallel. The length of the second fixed shaft in one of the connectors is longer than that in the other connector, and there is a gap between the connecting shaft connected to the second fixed shaft and the second partition plate for another baffle to pass through. When the two second partition plates are closed, the two baffles overlap.

[0008] A preferred technical solution is that the base plate includes a lower plate and an upper plate fixed on the lower plate. An arc-shaped groove is provided between the adjacent surfaces of the lower plate and the upper plate. The two arc-shaped grooves form a gas flow channel. The first and last ends of the gas flow channel extend to the upper end surface of the upper plate, respectively. An air compressor is provided on the surface of the lower plate, and the air compressor is connected to one end of the gas flow channel. The surfaces of both arc-shaped grooves are provided with reinforcing ribs. When the upper plate is installed onto the lower plate, the reinforcing ribs on the surfaces of the two arc-shaped grooves abut against each other. The surface of the upper plate is provided with a plurality of air holes that communicate with the gas flow channel, and the air holes are located near the bends of the gas flow channel.

[0009] A method for installing refrigeration equipment in a cold chain logistics project, based on the aforementioned refrigeration equipment in a cold chain logistics project, is characterized in that, when installing the refrigeration equipment, a side door needs to be formed on the side of the carriage body, and the refrigeration cabinet and refrigeration equipment are installed in sequence. Then, the bottom plate is installed into the carriage body, and the bottom plate is pushed to the inner end of the carriage body to form a gap between it and the carriage body for installing the door. Then, the door is installed into the gap, and the conveying mechanism is installed onto the surface of the bottom plate. When installing the conveying mechanism, the central axis of the conveying mechanism should be aligned with the central axis of the door and the insulation component, and the first isolation chamber in the conveying mechanism should be connected to the window between the two aerogel layers.

[0010] Compared with existing technologies, this technical solution has the following advantages: In practical use, handling personnel no longer need to open large doors to enter the compartment. Instead, they can enter the compartment through a relatively small side door. Once inside, personnel can directly operate the conveyor mechanism on the functional components, using the side door for cargo handling or auxiliary operations, while goods are transported outwards through the conveyor mechanism and windows in the insulation chamber. Because the side door opens frequently but with a small opening area each time, and does not directly interfere with the core cold air of the main cargo storage area, it greatly reduces the need for fully open doors due to personnel entering and exiting, effectively preventing a large amount of cold air from leaking out instantly.

[0011] When cargo is being transported out, the drive mechanism first opens the second partitions on both sides of the second isolation compartment, while the first partition remains closed, thus blocking direct communication between the interior of the carriage and the second isolation compartment. Goods enter and exit the second isolation compartment through the openings formed by the second partitions. Subsequently, the drive mechanism closes the second partitions while simultaneously opening the first partition, allowing goods to flow between the first and second isolation compartments. This alternating opening and closing mechanism ensures that at least one set of partitions is closed at any given time. This airlock-type physical isolation effectively prevents the direct escape of cold air along the transport channel, thereby maximizing the maintenance of the temperature environment inside the carriage while ensuring cargo transport operations. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is an overall diagram of the present invention.

[0014] Figure 2 for Figure 1 Exploded view diagram.

[0015] Figure 3 This is a schematic diagram of the conveying mechanism.

[0016] Figure 4 This is a front view of the second partition.

[0017] Figure 5 This is a schematic diagram of the opening and closing process of the second partition plate.

[0018] Figure 6 for Figure 5 Enlarged schematic diagram of point a in the middle.

[0019] Figure 7 This is a schematic diagram of the thermal insulation component.

[0020] Figure 8 This is a top view of the lower plate.

[0021] Figure 9 for Figure 8 3D schematic diagram.

[0022] Figure 10 for Figure 9 Exploded view diagram.

[0023] In the diagram: 1. Carriage body; 11. Refrigeration unit; 12. Refrigeration equipment; 13. Carriage door; 14. Side door; Functional component 2, conveying mechanism 21, lower plate 22, upper plate 23, air compressor 24; First isolation chamber 211, second isolation chamber 212, first partition plate 213, second partition plate 214, drive mechanism 215, slide rail 216, material transport plate 217; 2141 movable wheel, 2142 baffle, 1421 connector, 4211 first fixed shaft, 4212 connecting shaft, 4213 second fixed shaft, 4214 toggle spring; Drive gear 2151, first driven gear 2152, second driven gear 2153, third driven gear 2154; Thermal insulation component 3, aerogel layer 31, curtain 32, supporting steel component 33, cushioning pad 34; Gas flow channel 200, reinforcing rib 201, air hole 202; Detailed Implementation

[0024] like Figures 1 to 10As shown, this invention proposes a refrigeration device for cold chain logistics engineering, including a truck body 1 installed on a refrigerated truck. The truck body 1 is equipped with a refrigeration unit 11, a refrigeration device 12, a truck door 13, and a side door 14. The refrigeration unit 11 is located on the outside of the truck body 1, while the refrigeration device 12 is located on the inside of the truck body 1 and is connected to the refrigeration unit 11. The truck door 13 and the side door 14 are respectively located on two different sides of the truck body 1. The side door 14 is designed to address the significant cold air loss caused by frequent opening of the main compartment door 13 during loading and unloading in traditional refrigerated trucks. Its significance lies in providing an independent, low-interference personnel access route. In actual use, handling personnel no longer need to open the large compartment door 13 to enter the truck body 1. Instead, workers can enter through the relatively small side door 14. Once inside, personnel can directly interact with the conveyor mechanism 21 on the functional component 2. This design logic spatially separates "personnel entry / exit" from "cargo output": personnel enter and exit through the side door for sorting or auxiliary operations, while goods are conveyed outwards through the conveyor mechanism 21 and the windows of the insulation chamber. Although the side door 14 opens frequently, its single opening area is small and it does not directly interfere with the core cold air of the main cargo storage area, thus greatly reducing the need for the doors to be fully open due to personnel entry / exit, effectively preventing a large-scale instantaneous leakage of cold air.

[0025] The carriage body 1 is equipped with a functional component 2 and a heat insulation component 3. The functional component 2 is located on the side of the carriage body 1 away from the door 13. There is a heat insulation cavity between the functional component 2 and the door 13. The heat insulation component 3 is located in the heat insulation cavity. The heat insulation component 3 includes symmetrically arranged aerogel layers 31 and curtains 32. Supporting steel members 33 are provided on both sides of the aerogel layers 31. The supporting steel members 33 have windows on their sides. A buffer pad layer 34 is provided in the window. The buffer pad layer 34 abuts against the aerogel layers 31 and the supporting steel members 33 respectively. A window for transporting goods is provided between the two aerogel layers 31. The curtain 32 covers the surface of the window, and the upper end of the curtain 32 is connected to the aerogel layers 31 on both sides respectively. The aerogel layer 31, serving as the core insulation material, is symmetrically arranged. Aerogel itself has an extremely low thermal conductivity, effectively blocking heat transfer between the inside and outside of the vehicle compartment via conduction. A window for handling goods is reserved between the two aerogel layers 31, but this does not compromise the overall insulation integrity. Secondly, to ensure the structural stability of the aerogel layers and fill gaps, the supporting steel members 33 on both sides act as a framework. A buffer layer 34 is installed inside the window on the side of the supporting steel member. This buffer layer abuts against both the aerogel layer 31 and the supporting steel member 33, absorbing vibrations during vehicle movement and, more importantly, eliminating assembly gaps between the aerogel and the steel member, preventing the formation of a cold bridge effect. Finally, and most importantly, a curtain 32 covers the window surface between the two aerogel layers. The upper end of this curtain is fixed to the aerogel layer; when no goods are passing below, the curtain naturally hangs down to cover the window. This flexible sealing method allows goods to pass through intermittently, while blocking the convection exchange between cold air and external hot air for most of the time, thereby greatly reducing the leakage of cold air and maintaining a low-temperature environment inside the carriage.

[0026] Furthermore, the functional component 2 includes a conveying mechanism 21 and a base plate. The base plate is fixed to the bottom of the inner side of the carriage body 1. The conveying mechanism 21 is disposed on the surface of the functional component 2 near the heat insulation component 3, and the conveying mechanism 21 abuts against the window between the two aerogel layers 31. The conveying mechanism 21 communicates outward through the window. The conveying mechanism 21 has adjustable conveying ports at both ends. The two conveying ports are opened and closed by a driving mechanism. When the driving mechanism drives one of the conveying ports to open, the other conveying port gradually closes.

[0027] Furthermore, the conveying mechanism 21 includes a first isolation chamber 211, a second isolation chamber 212, a first partition plate 213, and a second partition plate 214. The first partition plate 213 and the second partition plate 214 are respectively disposed on the left and right sides of the second isolation chamber 212, while the first isolation chamber 211 is disposed on the side of the second isolation chamber 212 near the door 13. The first partition plate 213 and the second partition plate 214 are symmetrically arranged. When both first partition plates 213 are opened or both second partition plates 214 are opened, the conveying port is formed. The second isolation chamber 212 is connected to the first isolation chamber 211, and the first isolation chamber 211 is connected to the window. When cargo is being transported out, the drive mechanism first opens the second partitions 214 on both sides of the second isolation compartment 212, while the first partition 213 remains closed, thus blocking direct communication between the interior of the compartment and the second isolation compartment 212. Goods enter and exit the second isolation compartment 212 through the openings formed by the second partitions 214. Subsequently, the drive mechanism closes the second partitions 214 while simultaneously opening the first partitions 213, allowing goods to flow between the first isolation compartment 211 and the second isolation compartment 212. This alternating opening and closing mechanism ensures that at least one set of partitions is closed at any given time. This airlock-type physical isolation effectively prevents the direct escape of cold air along the transport channel, thereby maximizing the maintenance of the temperature environment inside the compartment while ensuring cargo transport operations.

[0028] Furthermore, the driving mechanism includes a driving mechanism 215, which includes a driving gear 2151, a first driven gear 2152, a second driven gear 2153, and a third driven gear 2154. The first driven gear 2152 and the second driven gear 2153 are respectively meshed on the left and right sides of the driving gear 2151. The surfaces of the first partition plate 213 and the second partition plate 214 are provided with tooth rows. The first driven gear 2152 meshes with the tooth rows on the surface of the first partition plate 213, and the second driven gear 2153 meshes with the tooth rows on the surface of the second partition plate 214 through the third driven gear 2154. The conveying mechanism 21 also includes a slide rail 216 and a material conveying plate 217. One end of the slide rail 216 is located inside the second isolation chamber 212, while the other end extends outside the second isolation chamber 212. The material conveying plate 217 is slidably mounted on the surface of the slide rail 216.

[0029] Furthermore, there is a gap between the lower end of the second partition plate 214 and the surface of the functional component 2 for the material conveying plate 217 to pass through, and baffles 2142 are provided on the adjacent surfaces of the two second partition plates 214 respectively. The two baffles 2142 are connected to the surface of the second partition plate 214 through the connector 1421. The connector 1421 includes a first fixed shaft 4211, a connecting shaft 4212, and a second fixed shaft 4213. The first fixed shaft 4211 is fixed to the surface of the baffle 2142, and the second fixed shaft 4213 is fixed to the surface of the second partition plate 214. The first fixed shaft 4211 is movably connected to the second fixed shaft 4213 through the connecting shaft 4212. A spring 4214 is provided at the connection end of the connecting shaft 4212 and the first fixed shaft 4211. When the spring 4214 is stationary, the two baffles 2142 are parallel. The length of the second fixed shaft 4213 in one of the connectors 1421 is longer than that in the other connector 1421, and there is a gap between the connecting shaft 4212 connected to the second fixed shaft 4213 and the second partition plate 214 for another baffle 2142 to pass through. When the two second partition plates 214 are closed, the two baffles 2142 overlap. When the material transport plate 217 transports goods through the area of ​​the second partition plate 214, its side or front end first contacts and pushes the baffle 2142. Since the baffle 2142 is movably connected to the second partition plate 214 via the connector 1421, and a spring 4214 is provided between the connecting shaft 4212 and the first fixed shaft 4211, when the material transport plate 217 continues to move forward, the thrust applied to the baffle 2142 overcomes the elastic force of the spring 4214, causing the baffle 2142 to swing around the connecting shaft 4212, thereby making way and allowing the material transport plate 217 to smoothly enter the interior of the second isolation chamber 212. After the material has completely entered the second isolation chamber 212, the second partition plate 214 performs a closing action, sealing the outer passage; then the first partition plate 213 opens, allowing the material to be transferred into the first isolation chamber 211. At this point, the external thrust on baffle 2142 disappears. Under the restoring force of the spring 4214, the two baffles 2142 simultaneously swing back to their initial planar positions, restoring themselves to a parallel state. When the second partition plates 214 on both sides continue to close into place, due to the longer design of the second fixed shaft 4213 on one side, sufficient space is reserved between its corresponding connecting shaft 4212 and the partition plate, allowing the baffle 2142 on the other side to pass through. Finally, the two baffles 2142 achieve staggered overlap in the closed state, ensuring the continuity of the sealing surface and avoiding mechanical interference, forming a tight airtight barrier and effectively preventing cold air leakage.

[0030] Furthermore, the base plate includes a lower plate 22 and an upper plate 23 fixed on the lower plate 22. An arc-shaped groove is provided between the adjacent surfaces of the lower plate 22 and the upper plate 23. The two arc-shaped grooves form a gas flow channel 200. The first and last ends of the gas flow channel 200 extend to the upper end surface of the upper plate 23, respectively. An air compressor 24 is provided on the surface of the lower plate 22, and the air compressor 24 is connected to one end of the gas flow channel 200. Both of the two arc-shaped grooves are provided with reinforcing ribs 201. When the upper plate 23 is installed on the lower plate 22, the reinforcing ribs 201 on the surfaces of the two arc-shaped grooves abut against each other. In order to allow the cold air to flow fully, multiple air holes 202 connected to the gas flow channel 200 are provided on the surface of the upper plate 23. These air holes 202 are located near the bends of the gas flow channel 200. When the air compressor 24 pressurizes, the airflow speed in the gas flow channel increases and the pressure increases. Some of the cold air will flow into the carriage body 1 in advance through the air holes, thereby maintaining the air temperature balance in the carriage body 1.

[0031] Based on the above, this invention also proposes an installation method for refrigeration equipment in cold chain logistics engineering. The refrigeration equipment in cold chain logistics engineering is characterized in that, when installing the refrigeration equipment, a side door 14 needs to be formed on the side of the carriage body 1, and the refrigeration cabinet 11 and the refrigeration equipment 12 are installed in sequence. Then, the bottom plate is installed into the carriage body 1, and the bottom plate is pushed to the inner end of the carriage body 1 so that a gap is formed between it and the carriage body 1 for installing the door 13. Then, the door 13 is installed into the gap, and the conveying mechanism 21 is installed on the surface of the bottom plate. When installing the conveying mechanism 21, the central axis of the conveying mechanism 21 should be aligned with the central axis of the door 13 and the insulation component 3, and the first isolation chamber 211 in the conveying mechanism 21 should be connected to the window between the two aerogel layers 31.

[0032] The above description is merely a preferred embodiment of the present invention, and therefore should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of the patent and the contents of the specification should still fall within the scope of the present invention.

Claims

1. A refrigeration device for cold chain logistics engineering, comprising a vehicle body (1) installed on a refrigerated truck, characterized in that, The carriage body (1) is equipped with a refrigeration cabinet (11), a refrigeration device (12), a carriage door (13) and a side door (14). The refrigeration cabinet (11) is located on the outside of the carriage body (1), while the refrigeration device (12) is located on the inside of the carriage body (1) and is connected to the refrigeration cabinet (11). The carriage door (13) and the side door (14) are respectively located on two different sides of the carriage body (1). The carriage body (1) is equipped with a functional component (2) and a heat insulation component (3). The functional component (2) is located on the side of the carriage body (1) away from the door (13). There is a heat insulation cavity between the functional component (2) and the door (13). The heat insulation component (3) is located in the heat insulation cavity. The heat insulation component (3) includes symmetrically arranged aerogel layers (31) and curtains (32). Supporting steel parts (33) are provided on both sides of the aerogel layer (31). The supporting steel parts (33) have windows on their sides. A buffer pad layer (34) is provided in the window. The buffer pad layer (34) abuts against the aerogel layer (31) and the supporting steel parts (33). A window for transporting goods is provided between the two aerogel layers (31). The curtain (32) covers the surface of the window, and the upper end of the curtain (32) is connected to the aerogel layers (31) on both sides. The functional component (2) includes a conveying mechanism (21) and a base plate. The base plate is fixed to the bottom of the inner side of the carriage body (1). The conveying mechanism (21) is located on the surface of the functional component (2) near the heat insulation component (3). The conveying mechanism (21) abuts against the window between the two aerogel layers (31). The conveying mechanism (21) communicates outward through the window. The conveying mechanism (21) has adjustable conveying ports at both ends. The two conveying ports are opened and closed by a driving mechanism. When the driving mechanism drives one of the conveying ports to open, the other conveying port gradually closes.

2. The refrigeration equipment for a cold chain logistics project according to claim 1, characterized in that, The conveying mechanism (21) includes a first isolation chamber (211), a second isolation chamber (212), a first partition plate (213), and a second partition plate (214). The first partition plate (213) and the second partition plate (214) are respectively disposed on the left and right sides of the second isolation chamber (212), while the first isolation chamber (211) is disposed on the side of the second isolation chamber (212) near the door (13). The first partition plate (213) and the second partition plate (214) are symmetrically arranged. When the two first partition plates (213) are opened or the two second partition plates (214) are opened, the conveying port is formed. The second isolation chamber (212) is connected to the first isolation chamber (211), and the first isolation chamber (211) is connected to the window.

3. The refrigeration equipment for a cold chain logistics project according to claim 2, characterized in that, The driving mechanism includes a driving mechanism (215), which includes a driving gear (2151), a first driven gear (2152), a second driven gear (2153), and a third driven gear (2154). The first driven gear (2152) and the second driven gear (2153) are respectively meshed on the left and right sides of the driving gear (2151). The surfaces of the first partition plate (213) and the second partition plate (214) are provided with tooth rows. The first driven gear (2152) meshes with the tooth rows on the surface of the first partition plate (213), and the second driven gear (2153) meshes with the tooth rows on the surface of the second partition plate (214) through the third driven gear (2154). The conveying mechanism (21) also includes a slide rail (216) and a material conveying plate (217). One end of the slide rail (216) is located inside the second isolation chamber (212), while the other end extends outside the second isolation chamber (212). The material conveying plate (217) is slidably mounted on the surface of the slide rail (216).

4. The refrigeration equipment for a cold chain logistics project according to claim 1, characterized in that; There is a gap between the lower end of the second partition plate (214) and the surface of the functional component (2) for the material conveying plate (217) to pass through, and the adjacent surfaces of the two second partition plates (214) are provided with baffles (2142), and the two baffles (2142) are connected to the surface of the second partition plate (214) respectively through connectors (1421); The connector (1421) includes a first fixed shaft (4211), a connecting shaft (4212), and a second fixed shaft (4213). The first fixed shaft (4211) is fixed to the surface of the baffle (2142), and the second fixed shaft (4213) is fixed to the surface of the second partition plate (214). The first fixed shaft (4211) is movably connected to the second fixed shaft (4213) through the connecting shaft (4212). A spring (4214) is provided at the connection end of the connecting shaft (4212) and the first fixed shaft (4211). When the spring (4214) is stationary, the two baffles (2142) are parallel. The length of the second fixed shaft (4213) in one of the connectors (1421) is longer than that in the other connector (1421), and there is a gap between the connecting shaft (4212) connected to the second fixed shaft (4213) and the second partition plate (214) for another baffle (2142) to pass through. When the two second partition plates (214) are closed, the two baffles (2142) overlap.

5. The refrigeration equipment for a cold chain logistics project according to claim 4, characterized in that, The base plate includes a lower plate (22) and an upper plate (23) fixed on the lower plate (22). There are arc-shaped grooves between the adjacent surfaces of the lower plate (22) and the upper plate (23). The two arc-shaped grooves form a gas flow channel (200). The two ends of the gas flow channel (200) extend to the upper end surface of the upper plate (23). An air compressor (24) is provided on the surface of the lower plate (22), and the air compressor (24) is connected to one end of the gas flow channel (200); The surfaces of the two arc-shaped grooves are provided with reinforcing ribs (201). When the upper plate (23) is installed on the lower plate (22), the reinforcing ribs (201) on the surfaces of the two arc-shaped grooves abut against each other. The surface of the upper plate (23) is provided with a plurality of air holes (202) that communicate with the gas flow channel (200), and the air holes (202) are provided near the bends of the gas flow channel (200).

6. A method for installing refrigeration equipment in a cold chain logistics project, based on the refrigeration equipment in a cold chain logistics project as described in claim 5, characterized in that, When installing the refrigeration equipment, a side door (14) needs to be formed on the side of the carriage body (1), and the refrigeration cabinet (11) and refrigeration equipment (12) are installed in sequence. Then, the bottom plate is installed inside the carriage body (1), and the bottom plate is pushed to the inner end of the carriage body (1) to form a gap between it and the carriage body (1) for installing the door (13). Then, the door (13) is installed in the gap, and the conveying mechanism (21) is installed on the surface of the bottom plate. When installing the conveying mechanism (21), the central axis of the conveying mechanism (21) should be aligned with the central axis of the door (13) and the insulation component (3), and the first isolation chamber (211) in the conveying mechanism (21) should be connected to the window between the two aerogel layers (31).

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