A cold chain transport box shelf structure

Abstract

The application discloses a cold-chain transportation box shelf structure and relates to the technical field of cold-chain logistics. The shelf structure comprises two side supports, a fresh-keeping refrigeration device and a plurality of storage rack mechanisms. The storage rack mechanism comprises a storage belt assembly, a net wrapping assembly and a hollow shunt plate. The net wrapping assembly comprises a rotating assembly and a wrapping belt net. The two sides of the net wrapping assembly are wound on the rotating assembly in an elastic winding manner. When the rotating assembly is rotated to the upper side of the storage belt assembly and is in a horizontal state, the wrapping belt net can be stretched and wrapped around the articles on the upper surface of the storage belt assembly. When the rotating assembly is rotated to the upper side of the hollow shunt plate and is in a vertical state, the two ends of the wrapping belt net are wound on the hollow shunt plate, and the wrapping belt net is straightened. The application has the advantages of simple structure, direct conveying of the articles to the box opening of the cold-chain transportation box, convenient discharging, wrapping of the articles by the wrapping belt net after the articles are placed, increased stability of the articles and high practicability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cold chain logistics, and particularly relates to a cold chain transport box shelf structure. BACKGROUND

[0002] With the rapid development and continuous progress of the fresh food e-commerce market, the transportation demand for fresh food in China becomes very large, and in order to ensure the quality of fresh food and other goods, it is necessary to refrigerate them during transportation. In China, a cold chain transport box with a semiconductor refrigerating sheet is generally used to refrigerate and transport fresh food and other products.

[0003] The refrigeration mode of the cold chain transport box is to place the goods on the shelf in the box body. The semiconductor refrigerating sheet in the cold chain transport box is generally arranged close to the outer wall of the inner cavity of the box body. The refrigerating sheet reduces the temperature of the cold chain transport box to achieve the refrigeration effect. The goods support is placed on the shelf without being fixed. During transportation, due to the bumping of the vehicle and other problems, the goods may be squeezed, the goods may collide with each other, and the goods may fall off the shelf, which may damage the goods and make the volume of the box body not be fully utilized. SUMMARY

[0004] The purpose of the present application is to provide a cold chain transport box shelf structure to solve the problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0006] A cold chain transport box shelf structure, comprising two side supports, a fresh-keeping refrigeration device arranged on the inner wall of the cold fresh transport box, and a plurality of storage rack mechanisms arranged between the two side supports, the storage rack mechanism comprising a storage belt assembly, a net wrapping assembly and a hollow shunt plate, the two ends of the storage belt assembly are respectively connected with the two side supports, and the storage belt assembly can transport the goods on its upper surface to one of the side supports, the hollow shunt plate is arranged at the back of the storage belt assembly, and the hollow shunt plate is connected with the gas outlet end of the fresh-keeping refrigeration device through a gas guide pipe; the hollow shunt plate is used to spray the gas flow discharged by the fresh-keeping refrigeration device to the upper surface of the storage belt assembly in a dispersed manner, the net wrapping assembly comprises a rotating assembly and a wrapping belt net, the rotating assembly is rotatably arranged on the upper side of the hollow shunt plate, and the rotating assembly can be rotated to the upper side of the storage belt assembly; the wrapping belt net is a plurality of and is arranged on the rotating assembly at equal intervals, and the two sides of the net wrapping assembly are wound on the rotating assembly in an elastic winding manner; when the rotating assembly is rotated to the upper side of the storage belt assembly and is in a horizontal state, the wrapping belt net can be stretched and wrapped around the goods on the upper surface of the storage belt assembly; when the rotating assembly is rotated to the upper side of the hollow shunt plate and is in a vertical state, the two ends of the wrapping belt net are wound on the hollow shunt plate, and the wrapping belt net is straightened.

[0007] On the basis of the above technical scheme, the application further provides the following optional technical schemes.

[0008] In an optional scheme, the rotating assembly comprises a wrapping rotating shaft, a fixing sleeve and a wrapping motor, two ends of the wrapping rotating shaft are rotatably installed on the upper side of the hollow distribution plate through bearing seats respectively, the output end of the wrapping motor is connected with one end of the wrapping rotating shaft, the fixing sleeve is a plurality of, one end of the fixing sleeve is fixedly connected with the wrapping rotating shaft and the other end of the fixing sleeve is provided with a spacing rod, the wrapping belt net is arranged between every two adjacent spacing rods, the side of the spacing rod is provided with a receiving groove and a winding and unwinding roller is installed in the receiving groove, the winding and unwinding roller is rotatably connected with the inner wall of the receiving groove through a clockwork bearing, and the end of the wrapping belt net is wound on the winding and unwinding roller.

[0009] In an optional scheme, the middle part of the wrapping belt net is provided with at least three pressing rod strips along the width direction thereof, the end of each pressing rod strip extends to the side of the wrapping belt net, and the end of the pressing rod strip away from the hollow distribution plate is provided with a front stop rod rotatably connected therewith.

[0010] In an optional scheme, the two ends of the hollow distribution plate are fixed on the side supports respectively and a plurality of jet holes are arranged on the end face of the hollow distribution plate facing the article belt assembly, a gas pipe connecting head is arranged on the end face of the hollow distribution plate away from the article belt assembly and the gas pipe connecting head is detachably connected with the end of the air guide pipe.

[0011] In an optional scheme, the article belt assembly comprises an outer fixing frame and a placing belt unit, the two ends of the outer fixing frame are fixedly connected with the two side supports respectively, a plurality of supporting conveying rollers rotatably connected with the end thereof are arranged on the inner side of the outer fixing frame at equal intervals, the placing belt unit comprises a conveying article belt and a conveying motor, the conveying article belt is wound around the outer side of the plurality of supporting conveying rollers and a plurality of convex strip parts are arranged on the outer surface of the conveying article belt along the width direction thereof, the conveying motor is arranged on the outer wall of the outer fixing frame and the output end of the conveying motor is connected with the one supporting conveying roller located at the most end.

[0012] In an optional scheme, the article belt assembly further comprises a lower slag collecting groove, an L-shaped bracket and a plurality of slag scraping pieces, the L-shaped bracket is two and the two L-shaped brackets are fixed on the side of the two side supports through the mounting fixed parts respectively, the bottom end of the L-shaped bracket extends to the lower side of the end of the conveying article belt, the lower slag collecting groove is located below the conveying article belt and the two ends of the lower slag collecting groove are supported by the two L-shaped brackets respectively, and the plurality of slag scraping pieces are arranged on the lower side of the outer fixing frame and the upper edge of the slag scraping piece is in contact with the lower surface of the conveying article belt.

[0013] In an alternative: the slag scraping piece includes a lower scraping rod, an extension connecting part and a scraping strip, the lower scraping rod is arranged along the width direction of the conveying storage belt, and one end of the lower scraping rod is fixedly connected with the side wall of the outer fixed frame through the extension connecting part, and the scraping strip is arranged on the side of the lower scraping rod facing the conveying storage belt; the scraping strip is in contact with the lower surface of the conveying storage belt.

[0014] Compared with the prior art, the present application has the following advantages:

[0015] 1、The net wrapping assembly in the present application can separate and wrap the articles on the storage belt assembly, so that the articles can be placed in intervals. Since the articles are always wrapped under the net wrapping assembly, the articles will not vibrate greatly when the cold chain transport box moves, thereby avoiding the articles from falling off the storage belt assembly and ensuring the stability of the article placement.

[0016] 2、The two ends of the wrapping belt net in the present application are connected to the rotating assembly in an elastic coiled manner, so that the wrapping belt net can be unwound when wrapping the articles on the storage belt assembly, thereby increasing the wrapping area of the wrapping belt net, so that it can adapt to articles of a larger size range.

[0017] 3、The present application has a simple structure, the storage belt assembly can directly convey the articles to the mouth of the cold chain transport box, facilitating unloading, and the articles are wrapped by the wrapping belt net after being placed, increasing the stability of placement, and having strong practicality. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a front shaft side schematic view of the shelf structure in an embodiment of the present application.

[0019] Figure 2 It is a rear shaft side structure schematic view of the shelf structure in an embodiment of the present application.

[0020] Figure 3 It is a storage shelf mechanism structure schematic view in an embodiment of the present application.

[0021] Figure 4 It is a front side structure schematic view of the net wrapping assembly in an embodiment of the present application.

[0022] Figure 5 It is a rear side structure schematic view of the net wrapping assembly in an embodiment of the present application.

[0023] Figure 6 It is a storage belt assembly structure schematic view in an embodiment of the present application.

[0024] Figure 7 It is a slag scraping piece structure schematic view in an embodiment of the present application.

[0025] The reference signs are annotated: side support 100, storage belt assembly 200, outer fixing frame 210, conveying motor 211, supporting conveying roller 212, conveying storage belt 213, convex strip part 214, lower slag collecting groove 220, mounting fixing part 230, L-shaped bracket 240, slag scraping member 250, lower scraping rod 251, extension connecting part 252, scraping strip 253, net wrapping assembly 300, wrapping rotating shaft 310, wrapping belt net 320, front blocking rod 322, pressing rod strip 321, fixing sleeve 330, wrapping motor 340, spacing rod member 350, storage groove 351, winding and unwinding roller 352, fresh-keeping refrigerator 400, air guide pipe 410, hollow shunt plate 500, jet flow hole 510, air pipe connecting head 520. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples; in the drawings or description, similar or identical parts use the same reference signs, and in practical application, the shape, thickness or height of each component can be enlarged or reduced. The listed examples of the present application are only used to illustrate the present application, and are not used to limit the scope of the present application. Any obvious modification or change made to the present application does not deviate from the spirit and scope of the present application.

[0027] In one embodiment, as Figures 1-5As shown, a cold chain transport box shelf structure includes two side supports 100, a fresh-keeping refrigeration device 400 arranged on the inner wall of the cold fresh transport box, and a plurality of storage rack mechanisms arranged between the two side supports 100. The storage rack mechanism includes a storage belt assembly 200, a net wrapping assembly 300, and a hollow diversion plate 500. The two ends of the storage belt assembly 200 are respectively connected to the two side supports 100, and the storage belt assembly 200 can transport the objects on its upper surface to one of the side supports 100. The hollow diversion plate 500 is arranged at the back of the storage belt assembly 200, and the hollow diversion plate 500 is connected to the air outlet end of the fresh-keeping refrigeration device 400 through an air guide pipe 410. The hollow diversion plate 500 is used to spray the air flow discharged by the fresh-keeping refrigeration device 400 in a dispersed manner to the upper surface of the storage belt assembly 200. The net wrapping assembly 300 includes a rotating assembly and a wrapping belt net 320. The rotating assembly is rotatably arranged on the upper side of the hollow diversion plate 500 and can be rotated to the upper side of the storage belt assembly 200. The wrapping belt net 320 is arranged on the rotating assembly at equal intervals, and the two sides of the net wrapping assembly 300 are wound on the rotating assembly in an elastic winding manner. When the rotating assembly is rotated to the upper side of the storage belt assembly 200 and is in a horizontal state, the wrapping belt net 320 can be stretched and wrapped around the objects on the upper surface of the storage belt assembly 200. When the rotating assembly is rotated to the upper side of the hollow diversion plate 500 and is in a vertical state, the two ends of the wrapping belt net 320 are wound on the hollow diversion plate 500, and the wrapping belt net 320 is straightened.

[0028] In the embodiment of the present application, the entire shelf structure is installed on the side wall of the cold chain transport box, and one of the side supports 100 is located at the box opening of the cold chain transport box. In the initial state, the rotating assembly is located on the upper side of the hollow diversion plate 500 and is in a vertical state, which facilitates the placement of objects on the storage belt assembly 200. The rotating assembly starts to work and rotates to the upper side of the storage belt assembly 200. The wrapping belt net 320 starts to cover the outer side of the corresponding object. As the rotating assembly rotates, the two ends of the wrapping belt net 320 are unwound from the hollow diversion plate 500 and stretched. The stretched wrapping belt net 320 wraps around the outer side of the object. The fresh-keeping refrigeration device 400 starts to work, and the fresh-keeping refrigeration device 400 guides the fresh-keeping air flow into the hollow diversion plate 500 through a plurality of air guide pipes 410. The fresh-keeping air flow flows from the end surface of the storage belt assembly 200 to the objects on the storage belt assembly 200 through the hollow diversion plate 500. The fresh-keeping air flow can directly act on the objects through the wrapping belt net 320, thereby improving the cold storage and fresh-keeping effect of the objects. Since the objects are always wrapped on the lower side of the wrapping belt net 320, the objects will not vibrate greatly when the cold chain transport box moves, thereby avoiding the objects from falling off the storage belt assembly 200 and ensuring the stability of the placement of the objects.

[0029] In one embodiment, as Figures 1-5As shown, the rotating assembly comprises a wrapping rotating shaft 310, a fixing sleeve 330 and a wrapping motor 340, both ends of the wrapping rotating shaft 310 are rotatably installed on the upper side of the hollow distribution plate 500 through bearing seats, the output end of the wrapping motor 340 is connected with one end of the wrapping rotating shaft 310, the fixing sleeve 330 is multiple, one end of the fixing sleeve 330 is fixedly connected with the wrapping rotating shaft 310 and the other end of the fixing sleeve 330 is provided with a spacing rod 350, the wrapping belt net 320 is arranged between every two adjacent spacing rods 350, the side of the spacing rod 350 is provided with a receiving groove 351 and the receiving groove 351 is provided with a winding and unwinding roller 352, the winding and unwinding roller 352 is rotatably connected with the inner wall of the receiving groove 351 through a clockwork bearing, and the end of the wrapping belt net 320 is wound on the winding and unwinding roller 352; in the embodiment of the application, the clockwork bearing is a mechanism formed by winding a clockwork between the bearing and the shaft end inside the bearing, and when the shaft end rotates relative to the bearing, the elastic damping effect of the clockwork is generated; therefore, in the initial state, the two ends of the wrapping belt net 320 are wound on the corresponding winding and unwinding roller 352 under the action of the clockwork bearing, and the wrapping belt net 320 is straightened; when the wrapping motor 340 starts to work, the wrapping motor 340 drives the wrapping rotating shaft 310 to rotate, the wrapping rotating shaft 310 drives the multiple fixing sleeves 330 to rotate synchronously and the fixing sleeve 330 can rotate to the upper side of the article belt assembly 200, the multiple spacing rods 350 rotate to the horizontal state and separate the two adjacent articles, the wrapping belt net 320 between the two spacing rods 350 covers the corresponding article, with the rotation of the spacing rod 350 towards the article belt assembly 200, the two sides of the wrapping belt net 320 are unwound from the winding and unwinding roller 352 under the blocking of the top of the article, so that the two ends of the wrapping belt net 320 are located on the two sides of the article to realize the wrapping of the article, thereby effectively limiting the movement of the article on the article belt assembly 200 and ensuring the stability of the article when the cold chain transport box moves.

[0030] In one embodiment, as shown in Figures 1-5 The middle part of the wrapping belt net 320 is provided with at least three pressing rod strips 321 along the width direction thereof, the end of each pressing rod strip 321 extends to the side of the wrapping belt net 320, and the end of the pressing rod strip 321 away from the hollow distribution plate 500 is provided with a front blocking rod 322 rotatably connected therewith; in the embodiment of the application, when the wrapping belt net 320 contacts the article on the article belt assembly 200, the multiple pressing rod strips 321 can be clamped in the groove on the top of the article or abut against the upper surface of the article in a surface contact manner, so as to further limit the movement of the article, and the front blocking rod 322 can rotate to the front side of the article to block the article from separating from the side of the article belt assembly 200.

[0031] In one embodiment, as shown in Figures 1-5As shown, the hollow diversion plate 500 is fixed at both ends of the side support 100 respectively and a plurality of jet holes 510 are arranged on the end face of the hollow diversion plate 500 facing the storage belt assembly 200, an air pipe connecting head 520 is arranged on the end face of the hollow diversion plate 500 away from the storage belt assembly 200 and the air pipe connecting head 520 is detachably connected with the end of the air guide pipe 410; in the embodiment, the fresh-keeping airflow generated by the fresh-keeping refrigerator 400 enters the inside of the hollow diversion plate 500 through the air guide pipe 410, then the fresh-keeping airflow is sprayed out through the plurality of jet holes 510 and is dispersed to the upper surface of the storage belt assembly 200, so that the articles on the storage belt assembly 200 are uniformly preserved.

[0032] In one embodiment, as shown in Figure 1 、 Figure 2 、 Figure 3 and Figure 6 , the storage belt assembly 200 comprises an outer fixed frame 210 and a placing belt unit, the outer fixed frame 210 is fixedly connected with two side supports 100 at both ends respectively, a plurality of supporting conveying rollers 212 are arranged on the inner side of the outer fixed frame 210 at equal intervals and the end of each supporting conveying roller 212 is rotatably connected with the outer fixed frame 210, the placing belt unit comprises a conveying storage belt 213 and a conveying motor 211, the conveying storage belt 213 is wrapped around the outer side of the plurality of supporting conveying rollers 212 and a plurality of convex strip parts 214 are arranged on the outer surface of the conveying storage belt 213 along the width direction of the conveying storage belt 213, the conveying motor 211 is arranged on the outer wall of the outer fixed frame 210 and the output end of the conveying motor 211 is connected with one supporting conveying roller 212 located at the most end; in the embodiment, the conveying motor 211 drives the supporting conveying roller 212 to rotate, the supporting conveying roller 212 drives the conveying storage belt 213 outside the supporting conveying roller 212 to move in a loop, and the moving conveying storage belt 213 can convey the articles thereon to the box opening of the cold chain transport box, so as to facilitate the discharging.

[0033] In one embodiment, as shown in Figure 1 、 Figure 2 、 Figure 3 and Figure 6As shown, the article placing belt assembly 200 further comprises a lower slag collecting groove 220, two L-shaped brackets 240 and a plurality of slag scraping members 250, the two L-shaped brackets 240 are respectively fixed on the side of the two side supports 100 through the mounting fixing part 230, the bottom end of the L-shaped bracket 240 extends to the lower side of the end of the conveying article placing belt 213, the lower slag collecting groove 220 is located below the conveying article placing belt 213 and the two ends of the lower slag collecting groove 220 are respectively supported by the two L-shaped brackets 240; the plurality of slag scraping members 250 are respectively arranged on the lower side of the outer fixed frame 210 and the upper edge of the slag scraping member 250 is in contact with the lower surface of the conveying article placing belt 213; in the embodiment of the application, when the part of the conveying article placing belt 213 supporting the article rotates to the lower side, the surface of the conveying article placing belt 213 is in contact with the slag scraping member 250, with the movement of the conveying article placing belt 213, the slag scraping member 250 can scrape off the stains remaining on the article adhered to the lower surface of the conveying article placing belt 213, the scraped stains fall into the lower slag collecting groove 220 for storage, and the lower slag collecting groove 220 can be pulled out from between the two L-shaped brackets 240, thereby facilitating the cleaning of the stains adhered to the surface of the conveying article placing belt 213 due to the placement of the article.

[0034] In one embodiment, as shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 6 and Figure 7 , the slag scraping member 250 comprises a lower scraping rod 251, an extension connecting part 252 and a scraping strip 253, the lower scraping rod 251 is arranged along the width direction of the conveying article placing belt 213 and one end of the lower scraping rod 251 is fixedly connected with the side wall of the outer fixed frame 210 through the extension connecting part 252, the scraping strip 253 is arranged on the side of the lower scraping rod 251 facing the conveying article placing belt 213; the scraping strip 253 is in contact with the lower surface of the conveying article placing belt 213; in the embodiment of the application, the scraping strip 253 is made of rubber material and has bristles on the surface; when the lower surface of the conveying article placing belt 213 passes through the lower scraping rod 251, the scraping strip 253 can scrape off and clean the stains adhered to the lower surface of the conveying article placing belt 213.

[0035] The above embodiment provides a cold chain transport box shelf structure, wherein, in the initial state, the rotating assembly is located on the upper side of the hollow distribution plate 500 and is in a vertical state, which can facilitate the placement of articles on the article belt assembly 200; the rotating assembly starts to work and rotates to the upper side of the article belt assembly 200, the wrapping belt net 320 starts to cover the outer side of the corresponding article, with the rotation of the rotating assembly, the two ends of the wrapping belt net 320 are released from the hollow distribution plate 500 and the wrapping belt net 320 is stretched, and the stretched wrapping belt net 320 wraps the outer side of the article; the fresh-keeping refrigerator 400 starts to work, and the fresh-keeping refrigerator 400 guides the fresh-keeping airflow into the hollow distribution plate 500 through a plurality of air guide pipes 410 respectively, the fresh-keeping airflow flows to the article on the article belt assembly 200 from the end face of the article belt assembly 200 through the hollow distribution plate 500, and the fresh-keeping airflow can directly act on the article through the wrapping belt net 320, thereby improving the cold storage and fresh-keeping effect of the article; since the article is always wrapped under the wrapping belt net 320, when the cold chain transport box moves, the article will not produce large vibration, thereby avoiding the article from falling off the article belt assembly 200 and ensuring the stability of the article placement.

[0036] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A cold chain transport box shelf structure comprising two side supports, a fresh-keeping refrigeration device arranged on the inner wall of a cold fresh transport box, and a plurality of shelf mechanisms arranged between the two side supports, characterized in that, The shelf mechanism comprises a shelf belt assembly, a net wrapping assembly and a hollow diversion plate; Two ends of the shelf belt assembly are connected with two side supports respectively, and the shelf belt assembly can transport the articles on the upper surface thereof to one of the side supports; the hollow diversion plate is arranged at the back of the shelf belt assembly and is connected with the air outlet end of the fresh-keeping refrigerator through the air guide pipe; The hollow diversion plate is used for spraying the air flow guided by the fresh-keeping refrigerator to the upper surface of the shelf belt assembly in a dispersed manner; The net wrapping assembly comprises a rotating assembly and a wrapping belt net; The rotating assembly is rotatably arranged on the upper side of the hollow diversion plate and can rotate to the upper side of the shelf belt assembly; the wrapping belt net comprises a plurality of wrapping belt nets which are arranged on the rotating assembly at equal intervals, and the two side edges of the net wrapping assembly are wound on the rotating assembly in an elastic manner; When the rotating assembly rotates to the upper side of the shelf belt assembly and is in a horizontal state, the wrapping belt net can be stretched and wrapped around the articles on the upper surface of the shelf belt assembly; When the rotating assembly rotates to the upper side of the hollow diversion plate and is in a vertical state, the two ends of the wrapping belt net are wound on the hollow diversion plate, and the wrapping belt net is straightened.

2. The cold chain shipping box rack structure of claim 1, wherein, The rotating assembly comprises a wrapping shaft, a fixing sleeve and a wrapping motor; Two ends of the wrapping shaft are rotatably arranged on the upper side of the hollow diversion plate through bearing seats respectively, and the output end of the wrapping motor is connected with one end of the wrapping shaft; The fixing sleeve comprises a plurality of fixing sleeves, one end of each fixing sleeve is fixedly connected with the wrapping shaft, and the other end of each fixing sleeve is provided with a spacing rod; Each adjacent two spacing rods are provided with the wrapping belt net, the side of each spacing rod is provided with a receiving groove, a winding and unwinding roller is arranged in the receiving groove, the winding and unwinding roller is rotatably connected with the inner wall of the receiving groove through a clockwork bearing, and the end of the wrapping belt net is wound on the winding and unwinding roller.

3. The cold chain shipping box rack structure of claim 2, wherein, The middle part of the wrapping belt net is provided with at least three pressing rod strips along the width direction thereof, the end of each pressing rod strip extends to the side of the wrapping belt net, and the end of each pressing rod strip away from the hollow diversion plate is provided with a front stop rod rotatably connected therewith.

4. The cold chain shipping box rack structure of claim 1, wherein, The two ends of the hollow diversion plate are fixed on the side supports respectively, a plurality of jet holes are arranged on the end face of the hollow diversion plate facing the shelf belt assembly, a gas pipe connector is arranged on the end face of the hollow diversion plate away from the shelf belt assembly, and the gas pipe connector is detachably connected with the end of the air guide pipe.

5. The cold chain shipping box rack structure of claim 1, wherein, The shelf belt assembly comprises an outer fixed frame and a placing belt unit; Two ends of the outer fixed frame are fixedly connected with two side supports respectively, and the inner side of the outer fixed frame is provided with a plurality of supporting conveying rollers rotatably connected with the ends thereof at equal intervals; The placing belt unit comprises a conveying shelf belt and a conveying motor; The conveying shelf belt surrounds the outer side of the plurality of supporting conveying rollers, and the outer surface of the conveying shelf belt is provided with a plurality of convex strip portions along the width direction thereof; the conveying motor is arranged on the outer wall of the outer fixed frame, and the output end of the conveying motor is connected with one of the supporting conveying rollers located at the endmost portion.

6. The cold chain shipping box rack structure of claim 5, wherein, The shelf belt assembly further comprises a lower slag collecting groove, an L-shaped bracket and a plurality of slag scraping members. The two L-shaped brackets are respectively fixed on the side of the two side supports through the mounting fixing parts, and the bottom end of the L-shaped bracket extends to the lower side of the end of the conveying storage belt, and the slag collecting groove is located below the conveying storage belt, and the two ends of the slag collecting groove are respectively supported by the two L-shaped brackets. A plurality of slag scraping members are respectively arranged on the lower side of the outer fixed frame, and the upper edge of the slag scraping member is in contact with the lower surface of the conveying storage belt.

7. The cold chain shipping box rack structure of claim 6, wherein, The slag scraping member comprises a lower scraping rod, an extension connecting part and a scraping strip. The lower scraping rod is arranged along the width direction of the conveying storage belt, one end of the lower scraping rod is fixedly connected with the side wall of the outer fixed frame through the extension connecting part, and the scraping strip is arranged on the side of the lower scraping rod facing the conveying storage belt. The scraping strip is in contact with the lower surface of the conveying storage belt.

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