A pre-prepared food constant temperature cold chain transportation device

Abstract

The application provides a prefabricated food constant-temperature cold-chain transportation device, and relates to the field of food transportation.The device comprises a device main body, a sealing structure and a prefabricated food placing box.Four groups of first communication pipes are fixedly inserted on the protruding plates on one side of the device main body.Four groups of insertion holes are arranged in the grooves on the other side of the device main body.Four groups of second communication pipes are fixedly inserted in the insertion holes.The inner side end of the first communication pipe and the inner side end of the second communication pipe are respectively sealed by the sealing baffle of the sealing structure.The bottom side of the prefabricated food placing box is provided with a supporting frame which is inserted outside the clamping frame in the device main body.The left and right ends of the inner side of the prefabricated food placing box are respectively separated by side frames.The middle of the inner side is separated by a placing frame.The top side is provided with a box cover.The device main body can be individually sealed.The two device main bodies can be connected to each other after being connected.The device can be clamped with the box cover under the support of the supporting spring to clamp the prefabricated food and keep the temperature inside consistent.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of food transportation, in particular to a prefabricated food constant-temperature cold chain transportation device. BACKGROUND

[0002] Cold chain transportation is a common preservation method for ensuring the freshness of food ingredients and achieving low-temperature storage and transportation of medicines. Its conventional operation usually uses cold chain containers in combination with foam boxes for storage and transportation. However, for some goods that need to be transported over short distances or need to be frequently moved and transferred, using traditional transport vehicles for cold chain distribution not only has high costs, but also has limited transportation coverage, often only reaching specific places such as indoor locations. In contrast, traditional portable cold chain transport boxes often sacrifice air conditioning systems to improve portability and instead use ice packs as a cold source to achieve cold chain transportation.

[0003] As disclosed in patent application No. 202210874378.9, a cold chain transport box includes a box body, an annular partition, a heat insulation plate, a cooling and drying unit, a negative pressure unit, a box cover, and casters. The annular partition is arranged inside the box body. The heat insulation plate is an annular structure with both ends disconnected, and the heat insulation plate is attached to the annular partition and the box body. The inner wall of the heat insulation plate attached to the outer wall of the annular partition is vertically and spacedly provided with a plurality of layers of annular gas flow channels, and the plurality of layers of annular gas flow channels are in communication with each other. The upper and lower parts of the annular partition correspond to the annular gas flow channels and are provided with a plurality of first through holes and a plurality of second through holes. The cooling and drying unit is arranged on the outer wall of the box body and communicates with the uppermost layer of the annular gas flow channels. The negative pressure unit is arranged on the outer wall of the box body and communicates with the lowermost layer of the annular gas flow channels through a gas pipe. One side of the box cover is rotatably connected to one side of the upper end face of the box body through a rotating connection mechanism. The casters are arranged on the lower end face corners of the box body. The present scheme is flexible and reliable in operation, and can dehumidify and dry the interior of the transport box without opening the box.

[0004] In the current application scenario of cold chain transport boxes, these prefabricated foods are usually randomly stacked inside the box, lacking a structure specifically designed to fix prefabricated foods. Moreover, the interior of existing boxes often adopts a separate sealing method. Once the dry ice placed inside the box completely sublimates, the interior of the box will lose the protection of the low-temperature environment, and in this case, the prefabricated foods are prone to spoilage and damage due to temperature rise. Therefore, a main body that can achieve mutual communication and also has separate sealing function is needed. SUMMARY

[0005] To solve the problems in the background art, the present application provides a prefabricated food constant-temperature cold chain transportation device. The interior of the device main body can be individually sealed, and after the two device main bodies are docked, they can also achieve mutual communication. In addition, under the support of the stay spring, the device main body and the box cover can clamp the prefabricated foods, and the temperature of the side frame, the placement frame, and the interior of the device main body can be kept consistent.

[0006] The application provides a prefabricated food constant-temperature cold chain transportation device, which specifically comprises a device main body, a sealing structure, a prefabricated food placing box, a grid plate and a T-shaped limiting plug plate.

[0007] The inner side of the device main body is provided with a round hole A, and a water collecting frame is fixed to the bottom side and communicates with the water collecting frame through the round hole A, and the outer side of one end of the water collecting frame is provided with two groups of water outlet holes, and sealing plugs are inserted into the water outlet holes.

[0008] Four groups of first communication pipes are fixed and inserted on the convex plate on one side of the device main body, four groups of insertion holes are arranged in the recess on the other side, four groups of second communication pipes are respectively fixed and inserted in the insertion holes, and the inner side ends of the first communication pipes and the inner side ends of the second communication pipes are respectively flush with the inner wall of the device main body and are sealed by the sealing baffle of the sealing structure.

[0009] The bottom side of the prefabricated food placing box is provided with a supporting frame, and the supporting frame is inserted outside the clamping frame in the device main body, the inner side of the prefabricated food placing box is respectively provided with side frames at the left and right ends, the inner side is provided with a placing frame, and the top side is provided with a box cover.

[0010] The grid plate is provided with two groups and is tightly inserted between the insertion slots in the device main body, and the T-shaped limiting plug plate passes through the strip holes at the two ends of the top side of the grid plate and is attached to the box cover.

[0011] The top side of the device main body is provided with a sealing cover which is clamped by a lock buckle, and the sealing cover is provided with a temperature display.

[0012] Further, the inner side of the first communication pipe is respectively provided with a supporting frame, the supporting frame is composed of two groups of vertical rods and one group of horizontal rods, and the horizontal rod extends 10cm out of the outer end of the first communication pipe.

[0013] Further, the second communication pipe is fixedly connected with the inner side end of the insertion hole through the connecting plate at the inner side end, the outer side end of the second communication pipe extends 62cm out of the outer end of the recess, and is provided with upper and lower opposite strip grooves.

[0014] Further, when the two groups of device main bodies are connected by the lock buckle after being abutted left and right, the outer convex plate is clamped into the recess, the first communication pipe is inserted into the insertion hole and is attached to the connecting plate, the vertical rod of the supporting frame is inserted into the strip groove, the outer end of the horizontal rod of the supporting frame is used to open the sealing baffle attached to the inner side of the second communication pipe, the outer end of the second communication pipe is used to open the sealing baffle attached to the inner side of the first communication pipe, and the interiors of the two groups of device main bodies are communicated.

[0015] Further, the square hole A on the clamping frame, the square hole B on the bottom side of the supporting frame and the square hole C on the bottom side of the grid plate are opposite left and right.

[0016] Further, the sealing structure further comprises a guide rod and a square frame, one end of the guide rod is provided with a hand-operated plate, and sequentially penetrates through the square frame and the sealing baffle at two ends, is screwed into the threaded hole in the inner wall of the device main body through the threaded end, and the spring is further sleeved on the guide rod between the sealing baffle and the square frame.

[0017] Further, the inner side upper end of the placing frame is provided with a stop block at four corners, a circular hole B is arranged at the middle of the bottom side, and a supporting plate is slidably arranged on the inner side of the placing frame; the supporting plate is provided with a through hole, and a supporting spring is arranged between the supporting plate and the bottom side of the placing frame.

[0018] Further, the bottom side of the box cover is provided with a lower protruding plate at two ends, respectively, and the lower protruding plate is clamped into the side frame; vertical through pipes are respectively inserted into the box cover and the lower protruding plate; the top ends of the vertical through pipes on the left side and the right side are connected with the longitudinal connecting pipe, respectively; the remaining vertical through pipes are connected with the horizontal connecting pipe; the left end and the right end of the horizontal connecting pipe are connected with the longitudinal connecting pipe, respectively; the front end and the rear end of the longitudinal connecting pipe are both open structures; when the box cover is clamped on the top side of the prefabricated food placing box, the side frame and the placing frame are communicated through the vertical through pipe, the longitudinal connecting pipe and the horizontal connecting pipe.

[0019] The prefabricated food constant-temperature cold chain transportation device has the following beneficial effects:

[0020] In the application, the device main body can be individually sealed, and after the two device main bodies are connected, the device main bodies can be communicated with each other; the device main body can be clamped with the box cover under the support of the supporting spring to clamp the prefabricated food, and the temperature in the side frame, the placing frame and the device main body can be kept consistent.

[0021] In addition, the sealing structure is arranged on the inner side of the first connecting pipe and the second connecting pipe, respectively, so that the inner side of the first connecting pipe and the second connecting pipe can be sealed by the sealing baffle and the spring, respectively, so that a single sealing body is formed in the device main body; after the two device main bodies are connected, the outer protruding plate is clamped into the groove, the first connecting pipe is inserted into the insertion hole and is attached to the connecting plate, the vertical rod of the supporting frame is inserted into the strip groove, the outer end of the horizontal rod of the supporting frame pushes open the sealing baffle attached to the inner side of the second connecting pipe, the outer end of the second connecting pipe pushes open the sealing baffle attached to the inner side of the first connecting pipe, so that the interiors of the two device main bodies are communicated with each other, and the temperatures in the interiors of the two device main bodies can be kept consistent.

[0022] In addition, by setting the prefabricated food placing box, by placing the prefabricated food alone on the supporting plate in the placing frame, by putting dry ice in the side frame, by lowering the temperature in the side frame by sublimation of the dry ice, by clamping the box cover on the top side of the prefabricated food placing box, by clamping the prefabricated food with the box cover under the support of the supporting spring, by realizing the intercommunication between the side frame and the placing frame and the inside of the device main body under the communication of the vertical through pipe, the horizontal connecting pipe and the vertical connecting pipe, by keeping the temperature consistent, by avoiding the direct contact of the prefabricated food with the dry ice, and by avoiding the long-time contact of the bottom of the prefabricated food with the water drops caused by temperature change, the damage of the prefabricated food is avoided.

[0023] In addition, by setting the round hole B at the bottom of the placing frame, by setting the round hole A at the bottom of the device main body, by making the square hole A on the clamping frame and the square hole B on the bottom side of the supporting frame and the square hole C on the bottom side of the grid plate opposite to each other, the water drops generated in the inside of the placing frame and the water drops generated in the inside of the device main body can flow into the water collecting frame along the round hole A, and finally the sealing plug is removed, and the water in the water collecting frame is discharged through the water outlet hole. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below.

[0025] The drawings in the following description only relate to some embodiments of the present application, and are not limited to the present application.

[0026] In the drawings:

[0027] Figure 1 A schematic diagram showing the overall structure of the present application is shown;

[0028] Figure 2 A schematic diagram showing the overall structure of the present application is shown; Figure 1 A left side view structure schematic diagram when the sealing cover is opened upward in the present application is shown;

[0029] Figure 3 A schematic diagram showing the overall structure of the present application is shown; Figure 2 An enlarged structure schematic diagram at A in the present application is shown;

[0030] Figure 4 A schematic diagram showing the overall structure of the present application is shown; Figure 1 A front side vertical section structure schematic diagram after the sealing cover is opened in the present application is shown;

[0031] Figure 5 A schematic diagram showing the overall structure of the present application is shown; Figure 4 An enlarged structure schematic diagram at B in the present application is shown;

[0032] Figure 6 A schematic diagram showing the overall structure of the present application is shown; Figure 4 A side view structure schematic diagram in the present application is shown;

[0033] Figure 7 A schematic diagram showing the overall structure of the present application is shownFigure 1 Structure diagram of the T-shaped limiting plugboard after the middle sealing cover is opened, the T-shaped limiting plugboard is pulled out of the strip hole, the prefabricated food placing box and the grid plate are taken out, and the box cover is detached from the prefabricated food placing box;

[0034] Figure 8 The application is shown Figure 7 Structure diagram of the middle side-up structure;

[0035] Figure 9 The application is shown Figure 7 Structure diagram of the middle device main body inside lateral top view structure;

[0036] Figure 10 The application is shown Figure 9 Structure diagram of the middle right side lateral top view structure;

[0037] Figure 11 The application is shown Figure 7 Structure diagram of the middle prefabricated food placing box after the front end is vertically cut;

[0038] Figure 12 The application is shown Figure 9 Structure diagram of the middle two groups of device main bodies after the front end is vertically cut after the left and right abutment;

[0039] Figure 13 The application is shown Figure 12 Structure diagram of the middle C is enlarged;

[0040] Figure 14 The application is shown Figure 12 Structure diagram of the middle first communication pipe and the second communication pipe after the front end is vertically cut after the plug-in abutment.

[0041] List of reference signs

[0042] 1, device main body; 101, card frame; 1011, square hole A; 102, slot; 103, round hole A; 104, outer protruding plate; 105, first communication pipe; 1051, support frame; 106, groove; 1061, plug hole; 107, second communication pipe; 1071, connecting plate; 1072, strip groove; 108, water collecting frame; 1081, water outlet hole; 109, sealing plug; 2, sealing structure; 201, sealing baffle; 202, guide rod; 2021, hand-operated plate; 203, square frame; 3, prefabricated food placing box; 301, support frame; 3011, square hole B; 302, side frame; 303, placing frame; 3031, stop block; 3032, round hole B; 304, support plate; 305, support spring; 306, box cover; 3061, lower protruding plate; 3062, vertical communication pipe; 3063, horizontal communication pipe; 3064, longitudinal communication pipe; 4, grid plate; 401, square hole C; 402, strip hole; 5, T-shaped limiting plugboard; 6, sealing cover; 601, temperature display. DETAILED DESCRIPTION

[0043] In order to make the purpose, scheme and advantages of the technical solutions of the present application clearer, the technical solutions of the embodiments of the present application will be described clearly and completely below in combination with the drawings of specific embodiments of the present application. Unless otherwise specified, the terms used herein have the meanings commonly used in the art. The same reference numerals in the drawings represent the same components.

[0044] Embodiment one: please refer to Figures 1 to 14 :

[0045] The present application provides a prefabricated food constant temperature cold chain transportation device, comprising: device body 1, sealing structure 2, prefabricated food placing box 3, grid plate 4 and T-shaped limiting plug plate 5;

[0046] The inner side of the device body 1 is provided with a round hole A103, and a water collecting frame 108 is fixed to the bottom side and communicates with the water collecting frame 108 through the round hole A103, and two groups of water outlet holes 1081 are arranged on the outer side of one end of the water collecting frame 108, and sealing plugs 109 are inserted into the water outlet holes 1081;

[0047] Four groups of first communication pipes 105 are fixed and inserted on the protruding plate 104 on one side of the device body 1, four groups of insertion holes 1061 are arranged in the recess 106 on the other side, four groups of second communication pipes 107 are respectively fixed and inserted in the insertion holes 1061, and the inner side ends of the first communication pipes 105 and the second communication pipes 107 are respectively flush with the inner wall of the device body 1, and are respectively sealed by the sealing baffle 201 of the sealing structure 2;

[0048] The bottom side of the prefabricated food placing box 3 is provided with a supporting frame 301, which is inserted outside the clamping frame 101 inside the device body 1 through the supporting frame 301, the inner side of the prefabricated food placing box 3 is respectively spaced apart from the side frame 302 at the left and right ends, and the inner side is spaced apart from the placing frame 303 at the middle, and the top side is clamped with a box cover 306;

[0049] The grid plate 4 is provided with two groups and is tightly inserted between the insertion slots 102 inside the device body 1, and the T-shaped limiting plug plate 5 passes through the strip holes 402 at the two ends of the top side of the grid plate 4 and is attached to the box cover 306;

[0050] The top side of the device body 1 is clamped with a sealing cover 6 through a lock, and a temperature display 601 is installed on the sealing cover 6.

[0051] In the embodiment of the present application, as Figure 3 , Figure 5 , Figure 12 and Figure 13 and Figure 14As shown, a support frame 1051 is fixed to the inner side of the first connecting pipe 105. The support frame 1051 consists of two sets of vertical rods and one set of horizontal rods. The horizontal rod extends 10cm beyond the outer end of the first connecting pipe 105. The second connecting pipe 107 is fixedly connected to the inner end of the insertion hole 1061 through the connecting plate 1071 at the inner end. The outer end of the second connecting pipe 107 extends 62cm beyond the outer end of the groove 106 and is provided with vertically opposite grooves 1072. When the two sets of device main bodies 1 are connected by locking the left and right sides, the outer protruding plate 104 is precisely locked in place. The first connecting pipe 105 is inserted into the socket 1061 and attached to the connecting plate 1071. The vertical rod of the support 1051 is inserted into the groove 1072. The outer end of the horizontal rod of the support 1051 pushes open the sealing baffle 201 attached to the inner side of the second connecting pipe 107. The outer end of the second connecting pipe 107 pushes open the sealing baffle 201 attached to the inner side of the first connecting pipe 105, so that the two sets of device bodies 1 can communicate with each other. After the two sets of device bodies 1 are connected left and right, the internal temperature of the two sets of device bodies 1 can be kept consistent.

[0052] In embodiments of the present invention, such as Figure 6 and Figure 9 As shown, the square hole A1011 on the card frame 101 is opposite to the square hole B3011 on the bottom side of the support frame 301 and the square hole C401 on the bottom side of the grid plate 4. The water droplets generated inside the main body 1 can flow into the water collection frame 108 through the square holes A1011, B3011 and C401 that are opposite to each other.

[0053] In embodiments of the present invention, such as Figure 9 and Figure 10 As shown, the sealing structure 2 also includes a guide rod 202 and a square frame 203. One end of the guide rod 202 is provided with a hand control plate 2021, which passes through the square frame 203 and the two ends of the sealing baffle 201 in sequence, and is screwed into the threaded hole in the inner wall of the device body 1 through the threaded end. A spring is also fitted on the guide rod 202 between the sealing baffle 201 and the square frame 203. The sealing baffle 201 and the spring can seal the inner sides of the first connecting pipe 105 and the second connecting pipe 107 respectively, so that the inside of the device body 1 forms a separate sealed body.

[0054] In embodiments of the present invention, such as Figure 2 , Figure 4 , Figure 7 , Figure 8 as well as Figure 11As shown, the inner side upper end of the placing frame 303 is provided with a stopper 3031 at four corners, a round hole B3032 is arranged in the middle of the bottom side, a supporting plate 304 is slidably arranged in the inner side of the placing frame 303, a through hole is arranged on the supporting plate 304, a supporting spring 305 is arranged between the bottom side of the placing frame 303, the bottom side of the box cover 306 is provided with a lower protruding plate 3061, the lower protruding plate 3061 is clamped into the side frame 302, a vertical through pipe 3062 is respectively inserted and arranged on the box cover 306 and the lower protruding plate 3061, the top ends of the vertical through pipes 3062 on the left side and the right side are respectively connected with a longitudinal connecting pipe 3064, the remaining vertical through pipes 3062 are connected with a horizontal connecting pipe 3063, the left and right ends of the horizontal connecting pipe 3063 are respectively connected with the longitudinal connecting pipe 3064, the front and rear ends of the longitudinal connecting pipe 3064 are both open structures, when the box cover 306 is clamped on the top side of the prefabricated food placing box 3, the side frame 302 and the placing frame 303 are communicated through the vertical through pipe 3062, the longitudinal connecting pipe 3064 and the horizontal connecting pipe 3063, the box cover 306 is supported by the supporting spring 305 to clamp the prefabricated food, the side frame 302 and the placing frame 303 are communicated with the inside of the device main body 1 under the communication of the vertical through pipe 3062, the horizontal connecting pipe 3063 and the longitudinal connecting pipe 3064, and the temperature is kept consistent.

[0055] The specific use mode and effect of the embodiment are as follows:

[0056] In the present application, the prefabricated food placing box 3 is inserted and arranged outside the clamping frame 101 in the device main body 1 through the supporting frame 301 at the bottom, the grid plate 4 is respectively inserted and arranged between the insertion slots 102, the prefabricated food is placed on the supporting plate 304 in the placing frame 303, dry ice is put into the side frame 302, the temperature in the side frame 302 is lowered by the sublimation of the dry ice, the box cover is clamped on the top side of the prefabricated food placing box, the T-shaped limiting insertion plate 5 is inserted and arranged in the strip hole 402 at the top side of the two ends of the grid plate 4, the T-shaped limiting insertion plate 5 is attached to the box cover 306, the prefabricated food is clamped by the box cover 306 under the support of the supporting spring 305, the side frame 302 and the placing frame 303 are communicated with the inside of the device main body 1 under the communication of the vertical through pipe 3062, the horizontal connecting pipe 3063 and the longitudinal connecting pipe 3064, and the temperature is kept consistent, at this time, the inside of the device main body 1 forms a separate sealed body by sealing the inner side of the first communication pipe 105 and the second communication pipe 107 by the sealing baffle 201 and the spring respectively, the water droplets generated in the inside of the placing frame 303 flow into the water collecting frame 108 through the round hole B3032 and the round hole A103, the water droplets generated in the inside of the device main body 1 can flow into the water collecting frame 108 through the left and right opposite square holes A1011, the square holes B3011 and the square holes C401 and the round hole A103, the water in the water collecting frame 108 can be discharged through the water outlet hole 1081 by taking out the sealing plug 109;

[0057] The two device bodies 1 can be butted left and right, and locked and clamped, at this time, the outer convex plate 104 is clamped into the groove 106, the first communication pipe 105 is inserted into the insertion hole 1061 and attached to the connecting plate 1071, the vertical rod of the support frame 1051 is inserted into the strip groove 1072, the outer end of the horizontal rod of the support frame 1051 pushes open the sealing baffle 201 attached to the inner side of the second communication pipe 107, the outer end of the second communication pipe 107 pushes open the sealing baffle 201 attached to the inner side of the first communication pipe 105, the interiors of the two device bodies 1 are communicated, and the temperature in the interiors of the two device bodies 1 is kept consistent.

[0058] In this document, the following should be noted:

[0059] 1. The embodiment of the present application only relates to the structure involved in the embodiment of the present application, and other structures can refer to the general design.

[0060] 2. In the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined to obtain new embodiments.

[0061] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A pre-prepared food thermostatic cold chain transport device comprising: Device body (1), sealing structure (2), prepackaged food placement box (3), grid plate (4) and T type limit plug-in board (5); The inner side of the device body (1) is provided with a round hole A (103), the bottom side is fixed with a water collecting frame (108), and the water collecting frame (108) is communicated with the round hole A (103), and the outer side of one end of the water collecting frame (108) is provided with two groups of water outlets (1081), and the water outlets (1081) are plugged with sealing plugs (109); The device body (1) is characterized in that four groups of first communication pipes (105) are fixed and inserted on the convex plate (104) on one side, four groups of insertion holes (1061) are arranged in the recess (106) on the other side, four groups of second communication pipes (107) are respectively fixed and inserted in the insertion holes (1061), and the inner side of the first communication pipe (105) and the inner side of the second communication pipe (107) are respectively flush with the inner wall of the device body (1), and are respectively sealed by the sealing baffle (201) of the sealing structure (2); The bottom side of the prepackaged food placement box (3) is provided with a support frame (301), which is inserted outside the clamping frame (101) in the device body (1), and the inner side of the prepackaged food placement box (3) is respectively provided with a side frame (302) and a placement frame (303) at the left and right ends, and a box cover (306) is arranged on the top side; The grid plate (4) is provided with two groups, which are respectively tightly inserted between the insertion slots (102) in the device body (1), and the T type limit plug-in board (5) passes through the strip holes (402) at the top of the two ends of the grid plate (4) and is attached to the box cover (306); The top side of the device body (1) is provided with a sealing cover (6) through a lock buckle, and a temperature display (601) is arranged on the sealing cover (6); The inner side of the first communication pipe (105) is respectively provided with a support frame (1051), which is composed of two groups of vertical rods and a group of horizontal rods, and the horizontal rod extends out of the outer end of the first communication pipe (105) by 10 cm; The second communication pipe (107) is fixedly connected with the inner side of the insertion hole (1061) through the connecting plate (1071) at the inner side, the outer end of the second communication pipe (107) extends out of the outer end of the recess (106) by 62 cm, and is provided with upper and lower opposite strip grooves (1072); When the two groups of device bodies (1) are connected by lock buckles after being connected left and right, the outer convex plate (104) is inserted into the recess (106), the first communication pipe (105) is inserted into the insertion hole (1061) and is attached to the connecting plate (1071), the vertical rod of the support frame (1051) is inserted into the strip groove (1072), the outer end of the horizontal rod of the support frame (1051) is opened and attached to the sealing baffle (201) on the inner side of the second communication pipe (107), the outer end of the second communication pipe (107) is opened and attached to the sealing baffle (201) on the inner side of the first communication pipe (105), and the interiors of the two groups of device bodies (1) are communicated; The bottom side of the box cover (306) is respectively provided with a lower convex plate (3061) at both ends, and the lower convex plate (3061) is clamped into the side frame (302), the box cover (306) and the lower convex plate (3061) are respectively provided with a vertical through pipe (3062), and the top ends of the vertical through pipes (3062) at the left end and the right end are respectively connected with a longitudinal connecting pipe (3064), the remaining vertical through pipes (3062) are connected with a horizontal connecting pipe (3063), the left end and the right end of the horizontal connecting pipe (3063) are respectively connected with the longitudinal connecting pipe (3064), and the front end and the rear end of the longitudinal connecting pipe (3064) are both open structures, when the box cover (306) is clamped on the top side of the prefabricated food placing box (3), the side frame (302) and the placing frame (303) are communicated through the vertical through pipe (3062), the longitudinal connecting pipe (3064) and the horizontal connecting pipe (3063).

2. A pre-cooked food constant temperature cold chain transportation device according to claim 1, characterized in that: The square hole A (1011) on the clamping frame (101) is left-right opposite to the square hole B (3011) on the bottom side of the supporting frame (301) and the square hole C (401) on the bottom side of the grid plate (4).

3. A pre-cooked food constant temperature cold chain transportation device according to claim 1, characterized in that: The sealing structure (2) further comprises a guide rod (202) and a square frame (203), one end of the guide rod (202) is provided with a hand operating plate (2021), and sequentially passes through the square frame (203) and the sealing baffle (201) at both ends, and is screwed into the threaded hole in the inner wall of the device main body (1) through the threaded end, and the guide rod (202) between the sealing baffle (201) and the square frame (203) is further sleeved with a spring.

4. The pre-cooked food constant-temperature cold-chain transportation device according to claim 1, characterized in that: The inner side of the placing frame (303) is provided with a stop block (3031) at the upper end of four corners, and a circular hole B (3032) is arranged at the middle of the bottom side, and the placing frame (303) is further provided with a supporting plate (304) which is slidably installed on the inner side of the placing frame (303), and the supporting plate (304) is provided with a through hole, and the supporting plate (304) is provided with a supporting spring (305) between the bottom side of the placing frame (303).

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