CN218949996U - Double-deck cold chain thing flow box - Google Patents

Abstract

The utility model relates to the technical field of cold chain logistics boxes, in particular to a double-layer cold chain logistics box which reduces the damage of objects at the bottom caused by larger pressure and reduces the damage of vibration to the objects; the heat-conducting inner container comprises a shell and a heat-conducting inner container, wherein the top end of the shell is provided with an opening, the heat-conducting inner container stretches into the shell through the opening, the top end of the heat-conducting inner container is provided with an opening, the outer side wall of the heat-conducting inner container is provided with a plurality of groups of frameworks, the plurality of groups of frameworks are connected with the inner side wall of the shell, and a cavity is formed between the shell and the heat-conducting inner container; still include strutting arrangement, closing means, multiunit flexible post, multiunit first spring, bottom plate and backup pad, multiunit flexible post's bottom all is connected with heat conduction inner bag inside wall bottom, multiunit first spring cooperation suit respectively on multiunit flexible post lateral wall, the bottom plate bottom is connected with multiunit flexible post top, the bottom plate sets up in heat conduction inner bag bottom, the backup pad passes through strutting arrangement setting at heat conduction inner bag inner middle part, the shell top is provided with closing means.

Description

Double-deck cold chain thing flow box

Technical Field

The utility model relates to the technical field of cold chain logistics boxes, in particular to a double-layer cold chain logistics box.

Background

The cold chain is a special supply chain system for ensuring the safety and biosafety of food products, wherein certain food raw materials, processed foods or semi-finished products are always in a specific low-temperature environment required by the products in the processing, storage, transportation, distribution and retail links, at present, when the cold chain products are transported, the logistics box comprises a box cover, an inner container box and an outer box body, an iron block is arranged on the outer side of the bottom surface of the inner container box, a magnet is arranged on the inner side of the bottom surface of the outer box body, the position of the iron block is matched with the position of the magnet, a damping spring is arranged below the magnet, and the magnet is connected with the outer box body through the damping spring;

however, when the logistics box is used, the objects are directly stacked in the inner container box, and when the objects are stacked higher, the objects at the bottom of the box are easy to be extruded and damaged by the weight of the objects at the upper part, so that the transportation quality of the logistics box on the objects is reduced, and the double-layer cold chain logistics box for reducing the extrusion damage of the objects is provided.

Disclosure of Invention

In order to solve the technical problems, the utility model provides the double-layer cold chain logistics box which reduces the damage of the bottom articles caused by vibration and the damage of the articles under the condition of larger pressure.

The utility model relates to a double-layer cold chain logistics box which comprises a shell and a heat conduction inner container, wherein the top end of the shell is provided with an opening, the heat conduction inner container stretches into the shell through the opening, the top end of the heat conduction inner container is provided with an opening, the outer side wall of the heat conduction inner container is provided with a plurality of groups of frameworks, the frameworks are connected with the inner side wall of the shell, and a cavity is formed between the shell and the heat conduction inner container; the bottom of the base plate is connected with the top ends of the plurality of groups of telescopic columns, the base plate is arranged at the bottom of the heat conduction liner, the support plate is arranged at the middle part of the heat conduction liner through the support device, the top end of the shell is provided with the sealing device, and the sealing device is used for sealing the shell, the heat conduction liner and the cavity; the refrigerator is placed in the cavity through the gap between the shell and the top end of the heat conducting liner, then articles are placed in the heat conducting liner, articles entering the heat conducting liner fall to the top end of the bottom plate, after the articles are stacked to a certain height, the supporting plate is placed in the heat conducting liner, the supporting plate is stopped at the middle part in the heat conducting liner through the limiting of the supporting device, then the rest articles are placed at the top of the supporting plate, the closing device is closed after the articles are placed, the closing device seals the gap between the top end opening of the shell, the top end opening of the heat conducting liner and the top end of the cavity, the heat conducting liner is separated into an upper part and a lower part through the supporting plate, the articles at the bottom are reduced from being damaged by larger pressure, the heat conducting liner cools the articles in the shell through the heat conducting liner, the convenience of storing the articles at low temperature of the logistics box is improved, and when the bottom plate is elastically supported by a plurality of groups of first springs, the damage to the articles is reduced.

Preferably, the supporting device comprises a plurality of groups of cylinders, a plurality of groups of pistons, a plurality of groups of supporting rods, a plurality of groups of magnets, a plurality of groups of second springs and a plurality of groups of sealing rings, wherein the plurality of groups of cylinders are all arranged on the inner side wall of the heat conduction liner, damping liquid is arranged in the plurality of groups of cylinders, the plurality of groups of pistons are respectively arranged in the plurality of groups of cylinders in a sliding manner up and down, a plurality of groups of through holes are respectively arranged on the plurality of groups of pistons, the bottom ends of the plurality of groups of supporting rods are respectively connected with the top ends of the plurality of groups of pistons, the top ends of the plurality of groups of supporting rods are respectively connected with the bottom ends of the plurality of groups of magnets, the plurality of groups of second springs are respectively matched and arranged in the plurality of groups of cylinders, the plurality of second springs are respectively arranged at the bottom ends of the plurality of groups of pistons, the plurality of sealing rings are respectively arranged at the top ends of the plurality of groups of cylinders, and the plurality of supporting rods respectively pass through the plurality of sealing rings to slide; after the heat conduction inner bag is put into to the backup pad, backup pad bottom and multiunit magnet top contact, adsorb the backup pad through the magnetic force of magnet fixedly, when the article on backup pad top receives the vibrations from top to bottom, the backup pad drives magnet reciprocates, the magnet is through bracing piece promotion piston downwardly sliding after moving downwards, the piston provides elasticity to the backup pad through the second spring and buffers, thereby reduce the article vibration intensity on backup pad top, improve the protective effect of article, in the multiunit through-hole of piston is passed to damping liquid in the barrel when the piston slides from top to bottom, thereby make the slip of piston receive the damping, improve the mobility stability of backup pad.

Preferably, the sealing device comprises a sealing door, a plurality of groups of hinges and a sealing gasket, wherein the sealing door is arranged at the opening at the top end of the shell and the heat conduction inner container, the left end of the sealing door is rotatably arranged on the outer side wall of the shell through the plurality of groups of hinges, the sealing gasket is arranged at the bottom end of the sealing door, and the sealing gasket seals the edges of the shell and the heat conduction inner container; the rotary cover of the sealing door is arranged at the top end of the shell, so that the sealing door is matched with the sealing gasket to seal the top end opening of the shell, the top end opening of the heat conduction liner and the top end of the cavity, thereby avoiding the leakage of refrigerant in the cavity and improving the sealing effect in the heat conduction liner.

Preferably, the door further comprises a plurality of groups of fixing components and a plurality of groups of lock catches, wherein the plurality of groups of fixing components are all arranged at the right end of the closed door, the plurality of groups of lock catches are all arranged at the upper part of the right side wall of the shell, and the plurality of groups of lock catches are respectively matched with the positions of the plurality of groups of fixing components; when the closed door cover is arranged at the top end of the shell, the upper parts of the plurality of groups of lock catches are sleeved on the outer side walls of the plurality of groups of fixing parts, so that the plurality of groups of fixing parts and the plurality of groups of lock catches fix the rotation of the closed door, and the use stability of the closed door is improved.

Preferably, the device also comprises a plurality of groups of guide blocks, wherein the groups of guide blocks are respectively arranged at the top end of the supporting plate; the supporting plates are slidably guided through the multiple groups of guide blocks, so that the operation convenience of the supporting plates when the heat conduction inner containers are horizontally placed is improved.

Preferably, the device also comprises two groups of handles, wherein the two groups of handles are respectively arranged at the front and rear parts of the top end of the supporting plate; through setting up two sets of handles, be convenient for take out the heat conduction inner bag outside with backup pad upward movement, improve the operation convenience.

Preferably, the door also comprises four groups of L-shaped plates which are respectively arranged at four corners of the top end of the closed door, and the spaces among the four groups of L-shaped plates are matched with the outer diameter size of the bottom end of the shell; when other shell screws are placed at the top end of the closed door, the four groups of L-shaped plates limit the bottom end of the shell, so that the stability of placing the logistics box screws is improved.

Compared with the prior art, the utility model has the beneficial effects that: the refrigerator is placed in the cavity through the gap between the shell and the top end of the heat conducting liner, then articles are placed in the heat conducting liner, articles entering the heat conducting liner fall to the top end of the bottom plate, after the articles are stacked to a certain height, the supporting plate is placed in the heat conducting liner, the supporting plate is stopped at the middle part in the heat conducting liner through the limiting of the supporting device, then the rest articles are placed at the top of the supporting plate, the closing device is closed after the articles are placed, the closing device seals the gap between the top end opening of the shell, the top end opening of the heat conducting liner and the top end of the cavity, the heat conducting liner is separated into an upper part and a lower part through the supporting plate, the articles at the bottom are reduced from being damaged by larger pressure, the heat conducting liner cools the articles in the shell through the heat conducting liner, the convenience of storing the articles at low temperature of the logistics box is improved, and when the bottom plate is elastically supported by a plurality of groups of first springs, the damage to the articles is reduced.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of a partial structure of a heat conductive liner and a skeleton or the like;

FIG. 3 is a schematic view of a partial structure of a connection of a support bar with a magnet or the like;

FIG. 4 is a schematic illustration of the partial structure of the closing door as measured by the axis connecting with the L-shaped plate, etc.;

the reference numerals in the drawings: 1. a housing; 2. a heat conductive liner; 3. a skeleton; 4. a telescopic column; 5. a first spring; 6. a bottom plate; 7. a support plate; 8. a cylinder; 9. a piston; 10. a support rod; 11. a magnet; 12. a second spring; 13. a seal ring; 14. closing the door; 15. a hinge; 16. a sealing gasket; 17. a fixing member; 18. locking; 19. a guide block; 20. a handle; 21. an L-shaped plate.

Description of the embodiments

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. This utility model may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Examples

As shown in fig. 1 to 4, the heat-conducting inner container comprises a shell 1 and a heat-conducting inner container 2, wherein the top end of the shell 1 is provided with an opening, the heat-conducting inner container 2 stretches into the shell 1 through the opening, the top end of the heat-conducting inner container 2 is provided with an opening, the outer side wall of the heat-conducting inner container 2 is provided with a plurality of groups of frameworks 3, the frameworks 3 are connected with the inner side wall of the shell 1, and a cavity is formed between the shell 1 and the heat-conducting inner container 2; the heat-conducting liner further comprises a supporting device, a closing device, a plurality of groups of telescopic columns 4, a plurality of groups of first springs 5, a bottom plate 6 and a supporting plate 7, wherein the bottom ends of the plurality of groups of telescopic columns 4 are connected with the bottom of the inner side wall of the heat-conducting liner 2, the plurality of groups of first springs 5 are respectively matched and sleeved on the outer side wall of the plurality of groups of telescopic columns 4, the bottom end of the bottom plate 6 is connected with the top ends of the plurality of groups of telescopic columns 4, the bottom plate 6 is arranged at the bottom in the heat conduction liner 2, the supporting plate 7 is arranged at the middle part in the heat conduction liner 2 through the supporting device, the top end of the shell 1 is provided with a sealing device, and the sealing device is used for sealing the shell 1, the heat conduction liner 2 and the cavity;

as shown in fig. 3, the supporting device comprises a plurality of groups of cylinders 8, a plurality of groups of pistons 9, a plurality of groups of supporting rods 10, a plurality of groups of magnets 11, a plurality of groups of second springs 12 and a plurality of groups of sealing rings 13, wherein the plurality of groups of cylinders 8 are all arranged on the inner side wall of the heat conduction liner 2, damping liquid is arranged in the plurality of groups of cylinders 8, the plurality of groups of pistons 9 are respectively arranged in the plurality of groups of cylinders 8 in a sliding manner, a plurality of groups of through holes are respectively arranged on the plurality of groups of pistons 9, the bottom ends of the plurality of groups of supporting rods 10 are respectively connected with the top ends of the plurality of groups of pistons 9, the top ends of the plurality of groups of supporting rods 10 are respectively connected with the bottom ends of the plurality of groups of magnets 11, the plurality of groups of second springs 12 are respectively arranged in the plurality of groups of cylinders 8 in a matching manner, the plurality of groups of second springs 12 are respectively arranged at the bottom ends of the plurality of pistons 9, the plurality of groups of sealing rings 13 are respectively arranged at the top ends of the plurality of groups of cylinders 8, and the plurality of supporting rods 10 respectively slide through the plurality of groups of the plurality of sealing rings 13.

In this embodiment, put into the cavity with the refrigerant through the gap between shell 1 and the heat conduction inner bag 2 top, afterwards put into heat conduction inner bag 2 inside with the article, get into the article in the heat conduction inner bag 2 and fall to bottom plate 6 top, after the article stacks certain height, put into heat conduction inner bag 2 inside with backup pad 7, backup pad 7 stops at heat conduction inner bag 2 inner middle part through strutting arrangement's spacing, afterwards place backup pad 7 top with the surplus article, close closing means after the article is placed, make closing means seal shell 1 top opening, heat conduction inner bag 2 top opening and the gap on cavity top, cut off in the heat conduction inner bag 2 through setting up backup pad 7, make the article in the heat conduction inner bag 2 divide into upper and lower two parts, reduce the bottom article and receive great pressure damage's condition, cool down in the outer shell 1 through the refrigerant, heat conduction inner bag 2 cools down inside article, improve the convenience of commodity circulation case to article low temperature storage, when supporting bottom plate 6 elastic support through multiunit first spring 5, reduce the damage to article of vibrations.

Examples

As shown in fig. 1 to 4, the heat-conducting inner container comprises a shell 1 and a heat-conducting inner container 2, wherein the top end of the shell 1 is provided with an opening, the heat-conducting inner container 2 stretches into the shell 1 through the opening, the top end of the heat-conducting inner container 2 is provided with an opening, the outer side wall of the heat-conducting inner container 2 is provided with a plurality of groups of frameworks 3, the frameworks 3 are connected with the inner side wall of the shell 1, and a cavity is formed between the shell 1 and the heat-conducting inner container 2; the heat-conducting liner further comprises a supporting device, a closing device, a plurality of groups of telescopic columns 4, a plurality of groups of first springs 5, a bottom plate 6 and a supporting plate 7, wherein the bottom ends of the plurality of groups of telescopic columns 4 are connected with the bottom of the inner side wall of the heat-conducting liner 2, the plurality of groups of first springs 5 are respectively matched and sleeved on the outer side wall of the plurality of groups of telescopic columns 4, the bottom end of the bottom plate 6 is connected with the top ends of the plurality of groups of telescopic columns 4, the bottom plate 6 is arranged at the bottom in the heat conduction liner 2, the supporting plate 7 is arranged at the middle part in the heat conduction liner 2 through the supporting device, the top end of the shell 1 is provided with a sealing device, and the sealing device is used for sealing the shell 1, the heat conduction liner 2 and the cavity;

as shown in fig. 3, the supporting device comprises a plurality of groups of cylinders 8, a plurality of groups of pistons 9, a plurality of groups of supporting rods 10, a plurality of groups of magnets 11, a plurality of groups of second springs 12 and a plurality of groups of sealing rings 13, wherein the plurality of groups of cylinders 8 are all arranged on the inner side wall of the heat conduction liner 2, damping liquid is arranged in the plurality of groups of cylinders 8, the plurality of groups of pistons 9 are respectively arranged in the plurality of groups of cylinders 8 in a sliding manner, a plurality of groups of through holes are respectively arranged on the plurality of groups of pistons 9, the bottom ends of the plurality of groups of supporting rods 10 are respectively connected with the top ends of the plurality of groups of pistons 9, the top ends of the plurality of groups of supporting rods 10 are respectively connected with the bottom ends of the plurality of groups of magnets 11, the plurality of groups of second springs 12 are respectively arranged in the plurality of groups of cylinders 8 in a matching manner, the plurality of groups of second springs 12 are respectively arranged at the bottom ends of the plurality of pistons 9, the plurality of groups of sealing rings 13 are respectively arranged at the top ends of the plurality of groups of cylinders 8, and the plurality of supporting rods 10 respectively slide through the plurality of groups of the plurality of sealing rings 13.

As shown in fig. 1 and fig. 4, the sealing device comprises a sealing door 14, a plurality of sets of hinges 15 and a sealing gasket 16, wherein the sealing door 14 is arranged at the top end opening of the shell 1 and the heat conduction liner 2, the left end of the sealing door 14 is rotatably arranged on the outer side wall of the shell 1 through the plurality of sets of hinges 15, the sealing gasket 16 is arranged at the bottom end of the sealing door 14, and the sealing gasket 16 seals the edges of the shell 1 and the heat conduction liner 2;

as shown in fig. 1, the sealing door further comprises a plurality of groups of fixing components 17 and a plurality of groups of lock catches 18, wherein the plurality of groups of fixing components 17 are all arranged at the right end of the sealing door 14, the plurality of groups of lock catches 18 are all arranged at the upper part of the right side wall of the shell 1, and the positions of the plurality of groups of lock catches 18 are respectively matched with the positions of the plurality of groups of fixing components 17;

as shown in fig. 1, 2 and 4, the device further comprises a plurality of groups of guide blocks 19, two groups of handles 20 and four groups of L-shaped plates 21, wherein the plurality of groups of guide blocks 19 are respectively arranged at the top end of the supporting plate 7, the two groups of handles 20 are respectively arranged at the front and rear parts of the top end of the supporting plate 7, the four groups of L-shaped plates 21 are respectively arranged at four corners of the top end of the sealing door 14, and the intervals among the four groups of L-shaped plates 21 are matched with the outer diameter size of the bottom end of the shell 1;

in this embodiment, after backup pad 7 put into heat conduction inner bag 2, backup pad 7 bottom and multiunit magnet 11 top contact, the magnetic force through magnet 11 adsorbs the backup pad 7 fixedly, when the article on backup pad 7 top receives the vertical vibrations, backup pad 7 drives magnet 11 and reciprocates, the back is moved down to magnet 11 promotes piston 9 through bracing piece 10 and slides downwards, piston 9 provides elasticity through second spring 12 and buffers backup pad 7, thereby reduce the article shock strength on backup pad 7 top, improve the protective effect of article, damping fluid in barrel 8 passes in the multiunit through-hole of piston 9 when piston 9 slides from top to make the slip of piston 9 receive the damping, improve the mobility stability of backup pad 7, with sealing door 14 rotary cap dress in shell 1 top, make sealing door 14 and sealing pad 16 cooperate shell 1 top opening, heat conduction inner bag 2 top opening and cavity top seal, avoid the refrigerant leakage in the cavity, after sealing door 14 lid dress in shell 1 top, thereby reduce the article shock strength on multiunit mounting 17 lateral wall in multiunit mounting 18, thereby make multiunit mounting 17 and guide screw die plate 17 put into the stability when the seal door 14 is put into place at the top of the seal box 1, thereby when sealing door 14 is put into the seal door 14 and the seal box 1, thereby the stability is put into place to multiunit screw-type door 14, the seal door 1 is convenient for carrying out, the stability is improved, when the multiunit is put into the seal door 1, and seal door is put into use and the seal box is used to seal box 21.

When the double-layer cold-chain logistics box is in operation, a refrigerant is placed into a cavity through a gap between the shell 1 and the top end of the heat conduction liner 2, then objects are placed into the heat conduction liner 2, the objects entering the heat conduction liner 2 fall to the top end of the bottom plate 6, after the objects are piled up to a certain height, the supporting plate 7 is placed into the heat conduction liner 2, the supporting plate 7 stays in the middle part in the heat conduction liner 2 through the limit of the supporting device, then the rest objects are placed at the top of the supporting plate 7, after the placement of the objects is completed, the sealing door 14 is rotatably covered at the top end of the shell 1, and the sealing door 14 is matched with the sealing gasket 16 to seal the top end opening of the shell 1, the top end opening of the heat conduction liner 2 and the top end of the cavity.

The main functions realized by the utility model are as follows: partition in to heat conduction inner bag 2 through setting up backup pad 7, make article in the heat conduction inner bag 2 divide into upper and lower two parts, reduce the bottom article and receive the circumstances of great pressure damage, cool down in to shell 1 through the refrigerant, heat conduction inner bag 2 cools down inside article through heat conduction, improves the convenience that the thing flow box stored article low temperature, when through the first spring 5 of multiunit to bottom plate 6 elastic support, reduce the damage of vibrations to article.

The lock catch 18 of the double-layer cold-chain logistics box is purchased in the market, and a person skilled in the art only needs to install and operate according to the attached using instruction, and the creative labor of the person skilled in the art is not needed.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.

Claims (7)

1. The utility model provides a double-deck cold chain logistics case, includes shell (1) and heat conduction inner bag (2), and shell (1) top is provided with the opening, and heat conduction inner bag (2) stretch into inside shell (1) through the opening, and heat conduction inner bag (2) top is provided with the opening, and heat conduction inner bag (2) lateral wall is provided with multiunit skeleton (3), and multiunit skeleton (3) all are connected with shell (1) inside wall to shaping cavity between shell (1) and heat conduction inner bag (2); the heat conduction inner container is characterized by further comprising a supporting device, a closing device, a plurality of groups of telescopic columns (4), a plurality of groups of first springs (5), a bottom plate (6) and a supporting plate (7), wherein the bottoms of the plurality of groups of telescopic columns (4) are connected with the bottom of the inner side wall of the heat conduction inner container (2), the plurality of groups of first springs (5) are respectively matched and sleeved on the outer side wall of the plurality of groups of telescopic columns (4), the bottom end of the bottom plate (6) is connected with the top end of the plurality of groups of telescopic columns (4), the bottom plate (6) is arranged at the inner bottom of the heat conduction inner container (2), the supporting plate (7) is arranged at the inner middle part of the heat conduction inner container (2) through the supporting device, and the top end of the shell (1) is provided with the closing device which is used for sealing the shell (1), the heat conduction inner container (2) and the cavity.

2. The double-layer cold chain logistics box of claim 1, wherein the supporting device comprises a plurality of groups of cylinders (8), a plurality of groups of pistons (9), a plurality of groups of supporting rods (10), a plurality of groups of magnets (11), a plurality of groups of second springs (12) and a plurality of groups of sealing rings (13), the plurality of groups of cylinders (8) are all arranged on the inner side wall of the heat conduction inner container (2), damping liquid is arranged in the plurality of groups of cylinders (8), the plurality of groups of pistons (9) are respectively arranged in the plurality of groups of cylinders (8) in a sliding manner, a plurality of groups of through holes are respectively arranged on the plurality of groups of pistons (9), the bottom ends of the plurality of groups of supporting rods (10) are respectively connected with the top ends of the plurality of pistons (9), the top ends of the plurality of groups of supporting rods (10) are respectively connected with the bottom ends of the plurality of magnets (11), the plurality of groups of second springs (12) are respectively matched and are respectively arranged at the bottom ends of the plurality of groups of pistons (9), the plurality of sealing rings (13) are respectively arranged at the top ends of the plurality of groups of cylinders (8), and the plurality of supporting rods (10) respectively slide through the plurality of groups of the supporting rods (13).

3. The double-layer cold chain logistics box of claim 1, wherein the sealing device comprises a sealing door (14), a plurality of sets of hinges (15) and a sealing gasket (16), the sealing door (14) is arranged at the top end opening of the shell (1) and the heat conducting inner container (2), the left end of the sealing door (14) is rotatably arranged on the outer side wall of the shell (1) through the plurality of sets of hinges (15), the sealing gasket (16) is arranged at the bottom end of the sealing door (14), and the sealing gasket (16) seals the edges of the shell (1) and the heat conducting inner container (2).

4. A double-layer cold chain logistics box as claimed in claim 3, further comprising a plurality of groups of fixing elements (17) and a plurality of groups of locking catches (18), wherein the plurality of groups of fixing elements (17) are all arranged at the right end of the closed door (14), the plurality of groups of locking catches (18) are all arranged at the upper part of the right side wall of the shell (1), and the plurality of groups of locking catches (18) are respectively matched with the positions of the plurality of groups of fixing elements (17).

5. A double-layer cold chain logistics box as claimed in claim 1, further comprising a plurality of sets of guide blocks (19), wherein the plurality of sets of guide blocks (19) are respectively arranged at the top ends of the support plates (7).

6. The double-layer cold chain logistics box of claim 1, further comprising two sets of handles (20), wherein the two sets of handles (20) are respectively arranged at the front and rear parts of the top end of the supporting plate (7).

7. A double-layer cold chain logistics box as claimed in claim 3, further comprising four sets of L-shaped plates (21), wherein the four sets of L-shaped plates (21) are respectively arranged at four corners of the top end of the closing door (14), and the spaces between the four sets of L-shaped plates (21) are matched with the outer diameter size of the bottom end of the outer shell (1).

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