Food cold-chain transportation process sample sampling device and sampling method

Abstract

The invention relates to the technical field of cold-chain transportation, and particularly discloses a food cold-chain transportation process sample sampling device and a sampling method.The food cold-chain transportation process sample sampling device comprises a cold-chain transportation box, the top and the bottom of the inner wall of the cold-chain transportation box are each connected with a plurality of guiding parts, and a plurality of cold-chain transportation frames are placed on the guiding parts. According to the fresh meat food sampling device, through the sampling component, under the condition that the cold chain transport box does not need to be opened, fresh meat food is automatically sampled through the sampling barrel in the cold chain transport box, and the situation that when the cold chain transport box is opened for sampling, under the condition that pollution exists in the cold chain transport box, a large amount of pollution sources overflow, and great trouble is generated for subsequent disinfection and killing is avoided; furthermore, through cooperation of a connecting thread sleeve, a connecting ring and a connecting rod, the connecting thread sleeve is detached from the second electric telescopic rod by rotating the connecting thread sleeve, so that the sampling barrel is detached, and subsequent cleaning and disinfection of the sampling barrel are facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of cold chain transportation, and in particular to a sample sampling device and a sampling method for a food cold chain transportation process. Background Art

[0002] Cold chain transportation refers to the transportation process in which the transported goods are always kept at a certain temperature, regardless of loading and unloading, changing the mode of transportation, replacing packaging equipment, etc.; cold chain transportation methods can be road transportation, water transportation, rail transportation, air transportation, or a comprehensive transportation method composed of multiple transportation methods. Cold chain transportation is an important link in cold chain logistics.

[0003] Cold chain transportation includes frozen transportation and refrigerated transportation. During the refrigerated transportation of fresh meat products, it is difficult to take samples of the fresh meat products inside without opening the refrigerator. It is difficult to determine whether there are safety hazards in the fresh meat products without sampling and testing. If there are epidemic prevention hazards in the fresh meat products, if the refrigerator is opened rashly at this time, the pollution source is likely to overflow, resulting in a larger epidemic spread. Therefore, in order to solve such problems, we proposed a sample sampling device and sampling method for the food cold chain transportation process. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a food cold chain transportation process sample sampling device and sampling method.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A food cold chain transportation process sample sampling device comprises a cold chain transportation box, the top and bottom of the inner wall of the cold chain transportation box are connected to a plurality of guide components, and a plurality of cold chain transportation racks are placed on the guide components, and both sides of one end of the inner wall of the cold chain transportation box and both sides of one end are jointly installed with material receiving components, and both sides of the inner wall of the cold chain transportation box are connected to sampling components, and the sampling components comprise two support blocks, and the sides of the two support blocks that are away from each other are connected to the inner wall of the cold chain transportation box, one end of the support block is connected to a sliding rod, and one end of the sliding rod is connected to one side of the inner wall of the cold chain transportation box, a linear motor 1 is sleeved on the outer side of the sliding rod, a moving rod is arranged between the upper and lower linear motors 1, and a support sleeve is sleeved on the top and bottom of the outer side of the moving rod, and both ends of one side of the linear motor 1 are connected to an L-shaped frame, and the side of the L-shaped frame away from the linear motor 1 is connected to an L-shaped plate, and both ends of the inner wall of the L-shaped plate are connected to an electric telescopic rod 1, and the telescopic end of the electric telescopic rod 1 is connected to the support sleeve.

[0006] Preferably, the number of the guide components is eight, and the eight guide components are evenly distributed up and down, the guide components include slide rails, and the sides of the upper and lower slide rails that are away from each other are connected to the inner wall of the cold chain transport box, and the cold chain transport rack is placed between the upper and lower corresponding slide rails.

[0007] Preferably, the slide rail is provided with a plurality of limit slots, the inner wall of the limit slot is slidably provided with a limit block, the side away from the upper and lower limit blocks passes through the limit slot and is connected with a connecting plate, the side of the connecting plate away from the limit block is connected with an electric push rod, and the side of the electric push rod away from the connecting plate is connected to the inner wall of the cold chain transport box.

[0008] Preferably, the outer sleeve of the moving rod is provided with a linear motor 2, the top of the linear motor 2 is connected to a mounting block, one side of the mounting block is respectively inlaid with a temperature sensor and a video acquisition probe, and the bottom of the linear motor 2 is connected to a collection component.

[0009] Preferably, the collecting component includes two bearing sleeves, the tops of the two bearing sleeves are connected to the bottom of the second linear motor, a rotating shaft is movably connected between the two bearing sleeves through a bearing, the bottom of the rotating shaft is connected to a swing plate, one end of the rotating shaft is connected to a conical rotor drive motor, the top of the conical rotor drive motor is connected to an L-shaped positioning plate, and the side of the L-shaped positioning plate away from the conical rotor drive motor is connected to the second linear motor.

[0010] Preferably, the swing plate is penetrated by an electric telescopic rod No. 2, the telescopic end threaded sleeve of the electric telescopic rod No. 2 is provided with a connecting screw sleeve, the outside of the connecting screw sleeve is connected to a connecting ring, one side of the connecting ring is connected to a plurality of connecting rods, the side of the connecting rod away from the connecting ring is connected to a sampling barrel, one side of the inner wall of the sampling barrel is provided with an annular cutting blade surface, the other side of the bottom of the sampling barrel is provided with a blanking port, the other side of the sampling barrel is respectively connected to a sampling motor and an inlaid electromagnet, the output end of the sampling motor penetrates into the interior of the sampling barrel and is connected to a spiral conveying reamer, and one side of the spiral conveying reamer is connected to a plurality of cutting knives.

[0011] Preferably, both ends of the bottom of one side of the swing plate are connected to reinforcing rods, the side of the reinforcing rod away from the swing plate is connected to an arc-shaped U-shaped plate used in conjunction with the blanking port, the tops of both ends of the arc-shaped U-shaped plate are connected to an outer cylinder, the inner wall of the outer cylinder is connected to a buffer spring, and the end of the buffer spring away from the inner wall of the outer cylinder is connected to an inner column.

[0012] Preferably, the material receiving component includes a receiving component and a storage box, one end of the storage box is connected to the cold chain transport box, the top of the storage box is respectively connected to the high temperature and high pressure box and the induced draft fan, an electromagnetic exhaust valve is installed on the top of the high temperature and high pressure box, the pipe at the air outlet end of the induced draft fan is connected to the high temperature and high pressure box, the pipe at the air inlet end of the induced draft fan is connected to the storage box, both ends of the inner wall of the high temperature and high pressure box are connected to ultraviolet sterilization lamps, the top of the inner wall of the high temperature and high pressure box is connected to an inclined baffle, both ends of the bottom of the inner wall of the storage box are connected to support rails, and a sample storage box is clamped on the support rails.

[0013] Preferably, the receiving component includes a receiving box, one end of which is connected to the inner wall of the cold chain transport box via a stabilizing rod, a conveying pipe is connected to the bottom of the receiving box, a side of the conveying pipe away from the receiving box passes through the cold chain transport box and is connected to the storage box, the tops of both ends of the receiving box are connected to movable tracks, both sides of the movable tracks are connected to blocks, a sealing cover plate is placed on the top of the receiving box, both ends of the bottom of the sealing cover plate are connected to movable slides used in conjunction with the movable track, and iron blocks are inlaid on opposite sides of the two sealing cover plates.

[0014] A sampling method for a food cold chain transportation process sample sampling device, the sampling method comprises the above-mentioned food cold chain transportation process sample sampling device, and the sampling method further comprises the following steps: Step 1: During the transportation of the food cold chain vehicle, the temperature sensor is always in working condition, monitoring the temperature inside the cold chain transport box in real time. The obtained temperature data is displayed on the on-board screen of the food cold chain vehicle. The driver observes the temperature inside the cold chain transport box while driving. The ultraviolet sterilization lamp will be turned on regularly to sterilize the inside of the storage box; Step 2: Before sampling, the preset control system in the on-board screen of the food cold chain vehicle is used to control linear motor 1 to move from left to right or from right to left outside the sliding rod, and linear motor 2 is controlled to move up and down outside the moving rod. At the same time, the video acquisition probe is turned on, and the video acquisition probe is used to capture images of fresh meat products placed on the cold chain transport rack. The collected image information will be displayed on the on-board screen; the samplers check the fresh meat products placed on the cold chain transport rack through the image information, and during the viewing process, the samplers randomly select fresh meat products at any position on the cold chain transport rack for sampling. After selection, linear motor 1 and linear motor 2 drive the sampling tube to move to the corresponding position, and then linear motor 1 and linear motor 2 stop running; Step three: When sampling, the electric telescopic rod is extended as soon as possible, and the supporting sleeve drives the moving rod to move to one side of the cold chain transport rack. The sampling tube moves toward the fresh meat food. The sampling motor drives the spiral conveyor reamer and the cutting knife to rotate. After the electric telescopic rod is extended as soon as possible, the electric telescopic rod 2 extends the sampling tube and gradually penetrates into the fresh meat food. Due to the presence of the annular cutting blade surface, the sampling tube can easily penetrate into the fresh meat. The rotating cutting knife cuts and samples the fresh meat, and the fresh meat sample is transported to the side of the drop port by the spiral conveyor reamer. During the extension of the electric telescopic rod 2, before the sampling tube enters the fresh meat food, the drop port is completely covered by the arc-shaped U-shaped plate. During the subsequent sampling process, the drop port is continuously covered so that the fresh meat sample will not fall from the drop port. Step 4: After sampling, the electric telescopic rod 1 contracts, driving the sampling barrel to detach from the fresh meat and away from the cold chain transport rack. At this time, the electric telescopic rod 2 does not contract, the blanking port is not free from the constraint of the arc-shaped U-shaped plate, and the sampling motor stops running. Linear motor 1 moves to the right outside the sliding rod, and linear motor 2 moves up or down outside the moving rod. Linear motor 1 moves to the rightmost side of the sliding rod, and the induced draft fan is turned on to close the electromagnetic exhaust valve. At this time, the sampling barrel corresponds to the sealing cover plate. The electric telescopic rod 2 contracts and drives the sampling barrel to move toward the sealing cover plate and contact the sealing cover plate. Under the cooperation of the moving track and the moving slideway, the sealing cover plate is pushed to move toward the inner wall of the cold chain transport box. After one side of the sealing cover plate contacts the block, the electric telescopic rod 2 completes the contraction, and the blanking port is completely separated from the arc-shaped U-shaped plate. Turn on the sampling motor to drive the spiral conveying reamer to rotate, and the fresh meat sample in the sampling barrel falls into the receiving box through the blanking port. Under the action of the induced draft fan, the fresh meat sample is sucked into the storage box through the conveying pipe, and the fresh meat sample falls into the sample storage box through the inclined baffle. After the sample is discharged, the storage box is opened and the sample storage box is taken out to test the fresh meat sample inside; Step 5: After the sample is discharged, the sampling motor is turned off, and the electromagnet is turned on. The electromagnet absorbs the iron block, and then the electric telescopic rod 2 is extended. The cooperation between the electromagnet and the iron block drives the sealing cover plate to move forward and reset. After the reset, the electromagnet is powered off, the electric telescopic rod 2 stops extending, and each component is reset to its original position; Step 6: After the fresh meat sample is tested and qualified, the cold chain transport box is opened, the electric push rod retracts, driving the connecting plate and the limit block to move, and the limit block stops limiting the cold chain transport rack. The linear motor 1 is controlled to move right outside the sliding rod, and the linear motor 2 is moved up outside the moving rod, so that the sampling tube moves to the middle of the leftmost cold chain transport rack. The electric telescopic rod 1 is extended so that the arc-shaped U-shaped plate corresponds to the beam of the cold chain transport rack. The linear motor 1 is controlled to move left outside the sliding rod, and the arc-shaped U-shaped plate is used to push the cold chain transport rack to the left to the edge of the inlet and outlet of the cold chain transport box. The electric telescopic rod 1 retracts so that the arc-shaped U-shaped plate does not correspond to the beam of the cold chain transport rack. The cold chain transport rack can be taken out using the lifting equipment later. During the removal process, the linear motor 1 moves right outside the sliding rod to the middle of the next cold chain transport rack, and then the electric telescopic rod 1 is extended so that the arc-shaped U-shaped plate corresponds to the beam of the cold chain transport rack. This is repeated to complete the removal of the cold chain transport rack. When loading the cold chain transport rack, use the lifting equipment to place the cold chain transport rack on the left edge of the cold chain transport box, and then use the arc-shaped U-shaped plate to correspond to the cold chain transport rack beam. The linear motor moves right, driving the cold chain transport rack to move right on the slide rail surface. After the cold chain transport rack is installed, the electric push rod extends and uses the limit block to continue to limit the cold chain transport rack. If it is unqualified, after taking out the cold chain transport rack, it will be handled according to the epidemic prevention needs.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1: In the present invention, the sampling component is used, and the sampling of fresh meat food is automatically completed in the cold chain transport box through the sampling barrel without opening the cold chain transport box, so as to avoid the situation that when the cold chain transport box is opened for sampling, there is contamination inside, which causes a large amount of pollution source to overflow, causing great trouble to the subsequent disinfection and sterilization; further, through the cooperation of the connecting screw sleeve, the connecting ring and the connecting rod, the connecting screw sleeve is removed from the electric telescopic rod 2 by rotating the connecting screw sleeve, and the disassembly of the sampling barrel is completed, which is conducive to the subsequent cleaning and disinfection of the sampling barrel.

[0016] 2: In the present invention, through the cooperation of the limiting slot and the limiting block, after the cold chain transport rack is placed, the electric push rod extends to push the limiting block out of the limiting slot, and the limiting block is used to limit the cold chain transport rack to avoid the damage of the cold chain transport rack and the scattering of fresh meat products due to the random movement of multiple cold chain transport racks on the slide rail during the transportation of the cold chain transport box.

[0017] 3: In the present invention, the interior of the storage box can be sterilized by an ultraviolet sterilization lamp to maintain the cleanliness of the interior of the storage box, thereby preventing the taken samples from being contaminated by pollutants in the storage box, causing inaccurate subsequent sampling and testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an axonometric diagram of the present invention; Figure 2 For the present invention Figure 1 A top view of Figure 3 This is an axonometric diagram of the material receiving component structure of the present invention; Figure 4 For the present invention Figure 3 Left view of Figure 5 The axonometric view of the structure of the access component of the present invention; Figure 6 For the present invention Figure 5 Bottom view of Figure 7 It is an axonometric diagram of the sampling component structure of the present invention; Figure 8 The exploded view of the structure of the components of the present invention is collected; Fig. 9 For the present invention Figure 8 Bottom view of Fig.10 For the present invention Figure 8 A top view of Fig.11 This is a diagram showing the coordination of the guide component and the cold chain transport rack structure of the present invention; Fig.12 The guide component structure of the present invention Figure 1 ; Fig.13 The guide component structure of the present invention Figure 2 .

[0019] In the figure: 1. cold chain transport box; 2. sampling component; 21. support block; 22. sliding rod; 23. linear motor 1; 24. L-shaped frame; 25. L-shaped plate; 26. collection component; 261. bearing sleeve; 262. rotating shaft; 263. swing plate; 264. connecting ring; 265. connecting screw sleeve; 266. outer cylinder; 267. arc-shaped U-shaped plate; 268. cutting knife; 269. spiral conveying reamer; 2610. sampling cylinder; 2611. inner column; 2612. reinforcing rod; 2613. connecting rod; 2614. electric telescopic rod 2; 2615. buffer spring; 2616. drop opening; 2617. annular cutting blade surface; 2618. electromagnet; 27. electric telescopic Rod one; 28, mounting block; 29, linear motor two; 210, support sleeve; 211, moving rod; 212, video acquisition probe; 213, temperature sensor; 3, guide component; 31, connecting plate; 32, limit block; 33, slide rail; 34, limit slot; 35, electric push rod; 4, cold chain transport rack; 5, material receiving component; 51, storage box; 52, ultraviolet sterilization lamp; 53, high temperature and high pressure box; 54, receiving component; 541, conveying pipe; 542, iron block; 543, sealing cover plate; 544, block; 545, moving track; 546, receiving box; 547, moving slide; 55, induced draft fan; 56, support track; 57, sample storage box; 58, tilted baffle. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Reference Figure 1-Figure 13A food cold chain transportation process sample sampling device comprises a cold chain transportation box 1, a plurality of guide components 3 are connected to the top and bottom of the inner wall of the cold chain transportation box 1, a plurality of cold chain transportation racks 4 are placed on the guide components 3, a material receiving component 5 is installed on both sides of one end of the inner wall of the cold chain transportation box 1 and both sides of one end, a sampling component 2 is connected to both sides of the inner wall of the cold chain transportation box 1, and the sampling component 2 comprises two support blocks 21, a side of the two support blocks 21 away from each other is connected to the inner wall of the cold chain transportation box 1, one end of the support block 21 is connected to a sliding rod 22, and one end of the sliding rod 22 is connected to one side of the inner wall of the cold chain transportation box 1 A linear motor 23 is sleeved on the outside of the sliding rod 22, a moving rod 211 is arranged between the upper and lower linear motors 23, a support sleeve 210 is sleeved on the top and bottom of the moving rod 211, both ends of one side of the linear motor 23 are connected with an L-shaped frame 24, a side of the L-shaped frame 24 away from the linear motor 23 is connected with an L-shaped plate 25, both ends of the inner wall of the L-shaped plate 25 are connected with an electric telescopic rod 27, and the telescopic end of the electric telescopic rod 27 is connected to the support sleeve 210; a notch is opened on the L-shaped plate 25 for use with the moving rod 211; the notch facilitates the moving rod 211 to move toward the L-shaped plate 25.

[0022] As a technical optimization solution of the present invention, the number of guide components 3 is eight, and the eight guide components 3 are evenly distributed up and down, the guide components 3 include slide rails 33, and the sides of the upper and lower slide rails 33 that are away from each other are connected to the inner wall of the cold chain transport box 1, and the cold chain transport frame 4 is placed between the upper and lower corresponding slide rails 33.

[0023] As a technical optimization scheme of the present invention, a plurality of limit slots 34 are penetrated on the slide rail 33, and a limit block 32 is slidably set on the inner wall of the limit slot 34, and the side of the upper and lower limit blocks 32 that are away from each other passes through the limit slot 34 and is connected to a connecting plate 31, and the side of the connecting plate 31 away from the limit block 32 is connected to an electric push rod 35, and the side of the electric push rod 35 away from the connecting plate 31 is connected to the inner wall of the cold chain transport box 1; through the cooperation of the limit slot 34 and the limit block 32, after the cold chain transport rack 4 is placed, the electric push rod 35 can be extended to push the limit block 32 out of the limit slot 34, and the cold chain transport rack 4 can be limited by the limit block 32 to avoid collisions caused by the random movement of multiple cold chain transport racks 4 on the slide rail 33 during the transportation of the cold chain transport box 1.

[0024] As a technical optimization solution of the present invention, the outer sleeve of the moving rod 211 is provided with a linear motor 29, the top of the linear motor 29 is connected to a mounting block 28, one side of the mounting block 28 is respectively inlaid with a temperature sensor 213 and a video acquisition probe 212, and the bottom of the linear motor 29 is connected to a collection component 26; the mounting block 28 is convenient for the installation of the temperature sensor 213 and the video acquisition probe 212, the temperature sensor 213 can monitor the internal temperature of the cold chain transport box 1, and the video acquisition probe 212 can perform video monitoring of the pork food placed on the cold chain transport rack 4, which is convenient for subsequent sampling.

[0025] As a technical optimization solution of the present invention, the collection component 26 includes two bearing sleeves 261, the tops of the two bearing sleeves 261 are connected to the bottom of the linear motor 29, a rotating shaft 262 is movably connected between the two bearing sleeves 261 through a bearing, a swing plate 263 is connected to the bottom of the rotating shaft 262, one end of the rotating shaft 262 is connected to a conical rotor drive motor, and an L-shaped positioning plate is connected to the top of the conical rotor drive motor, and the side of the L-shaped positioning plate away from the conical rotor drive motor is connected to the linear motor 29; the rotating shaft 262 can be supported by the two bearing sleeves 261, which is beneficial to the subsequent rotation of the rotating shaft 262; the L-shaped positioning plate can facilitate the connection between the conical rotor drive motor and the linear motor 29, thereby improving the stability of the conical rotor drive motor.

[0026] As a technical optimization solution of the present invention, an electric telescopic rod 2614 is provided through the swing plate 263, and a connecting screw sleeve 265 is provided on the telescopic end of the electric telescopic rod 2614, and a connecting ring 264 is connected to the outside of the connecting screw sleeve 265, and a plurality of connecting rods 2613 are connected to one side of the connecting ring 264, and a sampling barrel 2610 is connected to the side of the connecting rod 2613 away from the connecting ring 264, and an annular cutting blade surface 2617 is provided on one side of the inner wall of the sampling barrel 2610, and a drop opening 2616 is provided on the other side of the bottom of the sampling barrel 2610. The other side of the sample barrel 2610 is respectively connected to a sampling motor and an electromagnet 2618, the output end of the sampling motor passes through the interior of the sampling barrel 2610 and is connected to a spiral conveying reamer 269, and one side of the spiral conveying reamer 269 is connected to a plurality of cutting knives 268; through the cooperation of the connecting screw sleeve 265, the connecting ring 264 and the connecting rod 2613, when the connecting screw sleeve 265 is rotated, the connecting screw sleeve 265 is removed from the electric telescopic rod 2614, and the disassembly of the sampling barrel 2610 is completed, which is conducive to the subsequent cleaning and disinfection of the sampling barrel 2610.

[0027] As a technical optimization solution of the present invention, both ends of the bottom of one side of the swing plate 263 are connected with reinforcing rods 2612, and the side of the reinforcing rod 2612 away from the swing plate 263 is connected with an arc-shaped U-shaped plate 267 used in conjunction with the drop opening 2616, and the tops of both ends of the arc-shaped U-shaped plate 267 are connected with an outer cylinder 266, and the inner wall of the outer cylinder 266 is connected with a buffer spring 2615, and the end of the buffer spring 2615 away from the inner wall of the outer cylinder 266 is connected with an inner column 2611; through the arc-shaped U-shaped plate 267, the drop opening 2616 is adjusted when the material is taken. 6 is shielded to prevent the sample taken out during the sampling process from falling from the drop-out port 2616, making it impossible to complete the sampling operation. Further, after the electric telescopic rod 2614 is fully retracted, the sampling cylinder 2610 is moved backward to drive the drop-out port 2616 to separate from the arc-shaped U-shaped plate 267, which is beneficial to the subsequent discharge of materials. Through the cooperation of the outer cylinder 266, the buffer spring 2615 and the inner column 2611, a buffering effect can be played during the contact between the arc-shaped U-shaped plate 267 and the cold chain transport rack 4, avoiding direct collision between the two and causing deformation and damage to the arc-shaped U-shaped plate 267.

[0028] As a technical optimization scheme of the present invention, the material receiving component 5 includes a receiving component 54 and a storage box 51, one end of the storage box 51 is connected to the cold chain transport box 1, and the top of the storage box 51 is respectively connected to the high-temperature and high-pressure box 53 and the induced draft fan 55, an electromagnetic exhaust valve is installed on the top of the high-temperature and high-pressure box 53, the pipeline at the air outlet end of the induced draft fan 55 is connected to the high-temperature and high-pressure box 53, and the pipeline at the air inlet end of the induced draft fan 55 is connected to the storage box 51, both ends of the inner wall of the high-temperature and high-pressure box 53 are connected with ultraviolet sterilization lamps 52, the top of the inner wall of the high-temperature and high-pressure box 53 is connected with an inclined baffle 58, both ends of the bottom of the inner wall of the storage box 51 are connected with support rails 56, a sample storage box 57 is clamped on the support rails 56, and a sealed box door is installed on one side of the storage box 51; the ultraviolet sterilization lamp 52 can be used to sterilize the inside of the storage box 51 to maintain the cleanliness of the inside of the storage box 51, and avoid the removed samples from being contaminated by pollutants in the storage box 51, resulting in inaccurate subsequent sampling and testing.

[0029] As a technical optimization solution of the present invention, the receiving component 54 includes a receiving box 546, one end of which is connected to the inner wall of the cold chain transport box 1 through a stabilizing rod, and the bottom of the receiving box 546 is connected to a conveying pipe 541, and the side of the conveying pipe 541 away from the receiving box 546 passes through the cold chain transport box 1 and is connected to the storage box 51, and the tops of both ends of the receiving box 546 are connected to movable rails 545, and both sides of the movable rails 545 are connected to blocks 544, and a sealing cover plate 543 is placed on the top of the receiving box 546, and both ends of the bottom of the sealing cover plate 543 are connected to movable slides 5 used in conjunction with the movable rails 545. 47, an iron block 542 is embedded on one side opposite to the two sealing cover plates 543; the movable slide 547 can be limited by the stop block 544 to prevent the movable slide 547 from being separated from the top of the storage box 51 due to lack of limit during the forward and backward movement of the movable slide 547; the conveying pipe 541, the receiving box 546, the inclined baffle 58, the arc-shaped U-shaped plate 267 and the sampling tube 2610 are all covered with Teflon coating. The Teflon coating makes it difficult for the removed fresh meat sample to adhere to the conveying pipe 541, the receiving box 546, the inclined baffle 58, the arc-shaped U-shaped plate 267 and the sampling tube 2610, which is conducive to the fresh meat sample entering the interior of the sample storage box 57.

[0030] A sampling method for a food cold chain transportation process sample sampling device, the sampling method comprises the above-mentioned food cold chain transportation process sample sampling device, and the sampling method further comprises the following steps: Step 1: During the transportation of the food cold chain vehicle, the temperature sensor 213 is always in working state, and the temperature in the cold chain transport box 1 is monitored in real time. The obtained temperature data is displayed on the on-board screen of the food cold chain vehicle. The driver observes the temperature in the cold chain transport box 1 while driving. The ultraviolet sterilization lamp 52 will be turned on regularly to sterilize the inside of the storage box 51; Step 2: Before sampling, the preset control system in the on-board screen of the food cold chain vehicle is used to control the linear motor 1 23 to move from left to right or from right to left outside the sliding rod 22, and at the same time control the linear motor 2 29 to move up and down outside the moving rod 211, and at the same time turn on the video acquisition probe 212, and use the video acquisition probe 212 to collect images of the fresh meat food placed on the cold chain transport rack 4, and the collected image information will be displayed on the on-board screen; the sampler checks the fresh meat food placed on the cold chain transport rack 4 through the image information, and during the checking process, the sampler randomly selects fresh meat food at any position on the cold chain transport rack 4 for sampling. After selection, the linear motor 1 23 and the linear motor 2 29 drive the sampling tube 2610 to move to the corresponding position, and then the linear motor 1 23 and the linear motor 2 29 stop running; Step 3: When sampling, the electric telescopic rod 27 is extended, and the moving rod 211 is driven to move to the side of the cold chain transport rack 4 through the support sleeve 210, and the sampling barrel 2610 is moved toward the fresh meat food. The operation of the sampling motor drives the spiral conveying reamer 269 and the cutting knife 268 to rotate. After the electric telescopic rod 27 is extended, the electric telescopic rod 2614 is extended and the sampling barrel 2610 gradually penetrates into the fresh meat food. Due to the presence of the annular cutting blade surface 2617, the sampling barrel 2610 can easily penetrate into the fresh meat, and the rotating cutting knife 268 cuts and samples the fresh meat, and the taken fresh meat sample is conveyed to the side of the drop port 2616 by the spiral conveying reamer 269. During the extension of the second electric telescopic rod 2614, before the sampling tube 2610 enters the interior of the fresh meat food, the drop opening 2616 is completely shielded by the arc-shaped U-shaped plate 267. During the subsequent sampling process, the drop opening 2616 is continuously shielded, so that the fresh meat sample will not fall from the drop opening 2616. Step 4: After sampling, the electric telescopic rod 1 27 contracts, driving the sampling barrel 2610 to leave the fresh meat and away from the cold chain transport rack 4. At this time, the electric telescopic rod 2 2614 does not contract, the drop port 2616 does not break away from the constraint of the arc-shaped U-shaped plate 267, and the sampling motor stops running. The linear motor 1 23 moves right outside the sliding rod 22, and the linear motor 2 29 moves up or down outside the moving rod 211. The linear motor 1 23 moves to the rightmost side of the sliding rod 22, and the induced draft fan 55 is turned on to close the electromagnetic exhaust valve. At this time, the sampling barrel 2610 corresponds to the sealing cover plate 543. The electric telescopic rod 2614 contracts and drives the sampling barrel 2610 to move toward the sealing cover plate 543 and contact the sealing cover plate 543. Then, the sealing cover plate 543 is pushed toward the inner wall of the cold chain transport box 1 under the cooperation of the moving track 545 and the moving slide 547. After one side of the sealing cover plate 543 contacts the block 544, the electric telescopic rod 2614 completes the contraction. At this time, the drop-out port 2616 is completely separated from the arc-shaped U-shaped plate 267. The sampling motor is turned on to drive the spiral conveying reamer 269 to rotate, and the fresh meat sample in the sampling barrel 2610 falls into the receiving box 546 through the drop-out port 2616. Under the action of the induced draft fan 55, the fresh meat sample is sucked into the storage box 51 through the conveying pipe 541. The fresh meat sample is limited by the inclined baffle 58 and falls into the sample storage box 57. After the sample is discharged, the storage box 51 is opened to take out the sample storage box 57 for testing the fresh meat sample therein; Step 5: After the sample is discharged, the sampling motor is turned off, and the electromagnet 2618 is turned on. The electromagnet 2618 absorbs the iron block 542, and then the electric telescopic rod 2614 is extended. The cooperation between the electromagnet 2618 and the iron block 542 drives the sealing cover plate 543 to move forward and reset. After the reset, the electromagnet 2618 is powered off, the electric telescopic rod 2614 stops extending, and each component is reset to its original position. Step 6: The fresh meat sample is qualified, the cold chain transport box 1 is opened, the electric push rod 35 is retracted, driving the connecting plate 31 and the limit block 32 to move, and the limit block 32 stops limiting the cold chain transport rack 4. The linear motor 1 23 is controlled to move right outside the sliding rod 22, and the linear motor 2 29 is moved up outside the moving rod 211, so that the sampling tube 2610 moves to the middle of the leftmost cold chain transport rack 4, and the electric telescopic rod 1 27 is extended so that the arc-shaped U-shaped plate 267 corresponds to the beam of the cold chain transport rack 4. The linear motor 1 23 is controlled to move left outside the sliding rod 22, and the arc-shaped U-shaped plate 267 is used to push the cold chain transport rack 4 to the left to the edge of the inlet and outlet of the cold chain transport box 1. The electric telescopic rod 1 27 is retracted so that the arc-shaped U-shaped plate 267 does not correspond to the beam of the cold chain transport rack 4, and the cold chain transport rack 4 can be taken out using the lifting equipment later. During the removal process, the linear motor 23 moves right outside the sliding rod 22 and moves to the middle of the next cold chain transport rack 4, and then the electric telescopic rod 27 extends, so that the arc-shaped U-shaped plate 267 corresponds to the beam of the cold chain transport rack 4, and the cold chain transport rack 4 is taken out repeatedly in this way. When the cold chain transport rack 4 is loaded, the cold chain transport rack 4 is placed on the left edge of the cold chain transport box 1 using a lifting device, and then the arc-shaped U-shaped plate 267 is used to correspond to the beam of the cold chain transport rack 4, and the linear motor 23 moves right, driving the cold chain transport rack 4 to move right on the surface of the slide rail 33. After the installation of the cold chain transport rack 4 is completed, the electric push rod 35 extends and uses the limit block 32 to continue to limit the cold chain transport rack 4. If it is unqualified, after taking out the cold chain transport rack 4, it will be handled according to the epidemic prevention requirements.

[0031] During the transportation of the food cold chain vehicle in the present invention, the temperature sensor 213 is always in working state, and the temperature in the cold chain transport box 1 is monitored in real time. The obtained temperature data is displayed on the on-board screen of the food cold chain vehicle. The driver observes the temperature in the cold chain transport box 1 during driving. When the temperature in the cold chain transport box 1 is found to be abnormal, it is convenient to handle it in time to avoid abnormal temperature and cause the fresh meat food in the cold chain transport box 1 to deteriorate and be damaged. The ultraviolet sterilization lamp 52 will be turned on regularly to sterilize the inside of the storage box 51 to prevent external bacteria from invading the storage box 51 and causing pollution to the inside, and to pollute the fresh meat samples taken out later, causing the fresh meat sample test data to change, making the test data inaccurate.

[0032] Before sampling, the preset control system in the on-board screen of the food cold chain vehicle controls the linear motor 1 23 to move from left to right or from right to left outside the sliding rod 22, and controls the linear motor 2 29 to move up and down outside the moving rod 211, and turns on the video acquisition probe 212, and uses the video acquisition probe 212 to collect images of the fresh meat placed on the cold chain transport rack 4, and the collected image information will be displayed on the on-board screen; the sampler checks the fresh meat placed on the cold chain transport rack 4 through the image information, and during the checking process, the sampler randomly selects fresh meat at any position on the cold chain transport rack 4 for sampling. After selection, the linear motor 1 23 and the linear motor 2 29 drive the sampling barrel 2610 to move to the corresponding position, and then the linear motor 1 23 and the linear motor 2 29 stop running.

[0033] When sampling, the electric telescopic rod 1 27 extends, drives the moving rod 211 to move to the side of the cold chain transport rack 4 through the support sleeve 210, and the sampling barrel 2610 moves to the fresh meat food. The operation of the sampling motor drives the spiral conveying reamer 269 and the cutting knife 268 to rotate. After the electric telescopic rod 1 27 is extended, the electric telescopic rod 2 2614 extends the sampling barrel 2610 and gradually penetrates into the fresh meat food. Due to the presence of the annular cutting blade surface 2617, the sampling barrel 2610 can easily penetrate into the fresh meat. The rotating cutting knife 268 cuts and samples the fresh meat, and the fresh meat sample is transported to the side of the drop opening 2616 by the spiral conveying reamer 269. During the extension of the electric telescopic rod 2 2614, before the sampling barrel 2610 enters the fresh meat food, the drop opening 2616 is completely shielded by the arc-shaped U-shaped plate 267. During the subsequent sampling process, the drop opening 2616 is continuously shielded, so that the fresh meat sample will not fall from the drop opening 2616. Further, according to different sampling positions, before sampling, the conical rotor driving motor can be controlled to rotate forward, driving the rotating shaft 262 and the swing plate 263 to rotate forward, driving the sampling end of the sampling tube 2610 to tilt. When sampling is performed later, the sampling tube 2610 can be inserted into the fresh meat for sampling. The presence of the annular cutting blade surface 2617 can cut off the bones in the fresh meat food, and the cutting knife 268 can cut the bone surface.

[0034] After sampling, the electric telescopic rod 1 27 contracts, driving the sampling barrel 2610 to leave the fresh meat and away from the cold chain transport rack 4. If the inclined sampling method is used in the early stage, the conical rotor drives the motor to reverse, driving the sampling barrel 2610 to reverse and reset. At this time, the electric telescopic rod 2 2614 has not contracted, the drop port 2616 has not been separated from the constraint of the arc-shaped U-shaped plate 267, and the sampling motor stops running. The linear motor 1 23 moves to the right outside the sliding rod 22, and the linear motor 2 29 moves up or down outside the moving rod 211. The linear motor 1 23 moves to the rightmost side of the sliding rod 22, and the induced draft fan 55 is turned on to close the electromagnetic exhaust valve. At this time, the sampling barrel 2610 corresponds to the sealing cover plate 543. The electric telescopic rod 2614 contracts and drives the sampling tube 2610 to move toward the sealing cover plate 543 and contact the sealing cover plate 543. Then, the sealing cover plate 543 is pushed toward the inner wall of the cold chain transport box 1 under the cooperation of the moving track 545 and the moving slide 547. After one side of the sealing cover plate 543 contacts the block 544, the electric telescopic rod 2614 completes the contraction, and the drop opening 2616 is completely separated from the arc-shaped U-shaped plate 267. The sampling motor is turned on to drive the spiral conveying reamer 269 to rotate, and the fresh meat sample in the sampling tube 2610 falls into the receiving box 546 through the drop opening 2616. Under the action of the induced draft fan 55, the fresh meat sample is sucked into the storage box 51 through the conveying pipe 541, and the fresh meat sample falls into the sample storage box 57 through the inclined baffle 58. After the sample is discharged, the sealed box door is opened to take out the sample storage box 57 from the storage box 51 to test the fresh meat sample therein. During the sampling process, the ultraviolet sterilization lamp 52 is not running. Before sampling, in order to ensure the cleanliness of the sample box 57, the ultraviolet sterilization lamp 52 can be turned on in advance to sterilize the inside of the sample box 57. After the sample box 57 is taken out, the sealed box door is closed and the ultraviolet sterilization lamp 52 is turned on to sterilize the inside of the storage box 51. During the removal of the sample box 57, the induced draft fan 55 is always in operation, so that there is a negative pressure in the storage box 51, and the air inside it will not overflow to the outside in large quantities, effectively protecting the surrounding environment. The air exhausted during the operation of the induced draft fan 55 enters the high-temperature and high-pressure box 53, and the electromagnetic exhaust valve is opened after high-temperature sterilization to exhaust the gas, so as to avoid the presence of pollutants in the exhausted air to pollute the surrounding air, thereby bringing potential risks of epidemic transmission.

[0035] After the sample is discharged, the sampling motor is turned off, and the electromagnet 2618 is turned on. The iron block 542 is attracted by the electromagnet 2618, and then the electric telescopic rod 2614 is extended. The sealing cover plate 543 is driven forward and reset by the cooperation of the electromagnet 2618 and the iron block 542. After the reset, the electromagnet 2618 is powered off, the electric telescopic rod 2614 stops extending, and the components are reset to their original positions. If the sampling tube 2610 needs to be removed for cleaning, the reverse sampling tube 2610 drives the connecting screw sleeve 265 to reverse at the output end of the electric telescopic rod 2614, so that it is separated from the telescopic end of the electric telescopic rod 2614, and the sampling tube 2610 is disassembled for subsequent disinfection and cleaning.

[0036] The fresh meat sample is qualified, the cold chain transport box 1 is opened, the electric push rod 35 is retracted, driving the connecting plate 31 and the limit block 32 to move, and the limit block 32 stops limiting the cold chain transport rack 4. The linear motor 1 23 is controlled to move right outside the sliding rod 22, and the linear motor 2 29 is moved up outside the moving rod 211, so that the sampling tube 2610 moves to the middle of the leftmost cold chain transport rack 4, the electric telescopic rod 1 27 is extended so that the arc-shaped U-shaped plate 267 corresponds to the beam of the cold chain transport rack 4, the linear motor 1 23 is controlled to move left outside the sliding rod 22, and the arc-shaped U-shaped plate 267 is used to push the cold chain transport rack 4 to the left to the edge of the inlet and outlet of the cold chain transport box 1, and the electric telescopic rod 1 27 is retracted so that the arc-shaped U-shaped plate 267 does not correspond to the beam of the cold chain transport rack 4, and the cold chain transport rack 4 can be taken out using the lifting equipment later. During the removal process, the linear motor 23 moves right outside the sliding rod 22 and moves to the middle of the next cold chain transport rack 4, and then the electric telescopic rod 27 extends, so that the arc-shaped U-shaped plate 267 corresponds to the beam of the cold chain transport rack 4, and the cold chain transport rack 4 is taken out repeatedly in this way. When the cold chain transport rack 4 is loaded, the cold chain transport rack 4 is placed on the left edge of the cold chain transport box 1 using a lifting device, and then the arc-shaped U-shaped plate 267 is used to correspond to the beam of the cold chain transport rack 4, and the linear motor 23 moves right, driving the cold chain transport rack 4 to move right on the surface of the slide rail 33. After the installation of the cold chain transport rack 4 is completed, the electric push rod 35 extends, and the limit block 32 is used to continue to limit the cold chain transport rack 4. If it is unqualified, after taking out the cold chain transport rack 4, it will be handled according to the epidemic prevention requirements.

[0037] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A food cold chain transportation process sample sampling device, comprising a cold chain transportation box (1), characterized in that: The top and bottom of the inner wall of the cold chain transport box (1) are connected to a plurality of guide components (3), a plurality of cold chain transport racks (4) are placed on the guide components (3), both sides of one end of the inner wall of the cold chain transport box (1) and both sides of one end are jointly installed with material receiving components (5), both sides of the inner wall of the cold chain transport box (1) are connected to sampling components (2), the sampling components (2) include two support blocks (21), the sides of the two support blocks (21) that are away from each other are connected to the inner wall of the cold chain transport box (1), one end of the support block (21) is connected to a sliding rod (22), and one end of the sliding rod (22) is connected to the cold chain transport box (1). The invention relates to a box (1) and a housing (22). The housing (22) is connected to one side of the inner wall of the box (1), the outer sleeve of the sliding rod (22) is provided with a linear motor (23), a moving rod (211) is provided between the upper and lower linear motors (23), the outer top and bottom of the moving rod (211) are both sleeved with a support sleeve (210), both ends of one side of the linear motor (23) are connected to an L-shaped frame (24), a side of the L-shaped frame (24) away from the linear motor (23) is connected to an L-shaped plate (25), both ends of the inner wall of the L-shaped plate (25) are connected to an electric telescopic rod (27), and the telescopic end of the electric telescopic rod (27) is connected to the support sleeve (210).

2. A food cold chain transportation process sample sampling device according to claim 1, characterized in that: The number of the guide components (3) is eight, and the eight guide components (3) are evenly distributed up and down. The guide components (3) include slide rails (33), and the sides of the upper and lower slide rails (33) that are separated from each other are connected to the inner wall of the cold chain transport box (1). The cold chain transport rack (4) is placed between the upper and lower corresponding slide rails (33).

3. A food cold chain transportation process sampling device according to claim 2, characterized in that: The slide rail (33) is provided with a plurality of limit slots (34), the inner wall of the limit slot (34) is slidably provided with a limit block (32), the side of the upper and lower limit blocks (32) away from each other passes through the limit slot (34) and is connected to a connecting plate (31), the side of the connecting plate (31) away from the limit block (32) is connected to an electric push rod (35), and the side of the electric push rod (35) away from the connecting plate (31) is connected to the inner wall of the cold chain transport box (1).

4. The food cold chain transportation process sampling device according to claim 1 is characterized in that: The outer sleeve of the moving rod (211) is provided with a second linear motor (29); the top of the second linear motor (29) is connected to a mounting block (28); one side of the mounting block (28) is respectively inlaid with a temperature sensor (213) and a video acquisition probe (212); and the bottom of the second linear motor (29) is connected to a acquisition component (26).

5. A food cold chain transportation process sampling device according to claim 4, characterized in that: The collecting component (26) comprises two bearing sleeves (261), the tops of the two bearing sleeves (261) are connected to the bottom of the second linear motor (29), a rotating shaft (262) is movably connected between the two bearing sleeves (261) via a bearing, the bottom of the rotating shaft (262) is connected to a swing plate (263), one end of the rotating shaft (262) is connected to a conical rotor driving motor, the top of the conical rotor driving motor is connected to an L-shaped positioning plate, and the side of the L-shaped positioning plate away from the conical rotor driving motor is connected to the second linear motor (29).

6. A food cold chain transportation process sampling device according to claim 5, characterized in that: The swing plate (263) is provided with an electric telescopic rod 2 (2614) extending therethrough. The telescopic end of the electric telescopic rod 2 (2614) is threadedly provided with a connecting screw sleeve (265). The outside of the connecting screw sleeve (265) is connected to a connecting ring (264). One side of the connecting ring (264) is connected to a plurality of connecting rods (2613). The side of the connecting rod (2613) away from the connecting ring (264) is connected to a sampling barrel (2610). An annular cutting blade surface (2617) is provided on one side of the inner wall of the sampling barrel (2610). A material drop opening (2616) is provided on the other side of the bottom of the sampling barrel (2610). A sampling motor and an electromagnet (2618) are respectively connected to the other side of the sampling barrel (2610). The output end of the sampling motor extends through the interior of the sampling barrel (2610) and is connected to a spiral conveying reamer (269). One side of the spiral conveying reamer (269) is connected to a plurality of cutting knives (268).

7. A food cold chain transportation process sampling device according to claim 6, characterized in that: Both ends of the bottom of one side of the swing plate (263) are connected to reinforcing rods (2612); the side of the reinforcing rod (2612) away from the swing plate (263) is connected to an arc-shaped U-shaped plate (267) used in conjunction with the blanking port (2616); the tops of both ends of the arc-shaped U-shaped plate (267) are connected to an outer cylinder (266); the inner wall of the outer cylinder (266) is connected to a buffer spring (2615); and the end of the buffer spring (2615) away from the inner wall of the outer cylinder (266) is connected to an inner column (2611).

8. The food cold chain transportation process sampling device according to claim 1 is characterized in that: The material receiving component (5) comprises a receiving component (54) and a storage box (51); one end of the storage box (51) is connected to the cold chain transport box (1); the top of the storage box (51) is respectively connected to the high-temperature and high-pressure box (53) and the induced draft fan (55); an electromagnetic exhaust valve is installed on the top of the high-temperature and high-pressure box (53); the pipeline at the air outlet end of the induced draft fan (55) is connected to the high-temperature and high-pressure box (53); the pipeline at the air inlet end of the induced draft fan (55) is connected to the storage box (51); both ends of the inner wall of the high-temperature and high-pressure box (53) are connected to ultraviolet sterilization lamps (52); the top of the inner wall of the high-temperature and high-pressure box (53) is connected to an inclined baffle (58); both ends of the bottom of the inner wall of the storage box (51) are connected to support rails (56); and a sample storage box (57) is clamped on the support rails (56).

9. A food cold chain transportation process sampling device according to claim 8, characterized in that: The receiving component (54) comprises a receiving box (546), one end of which is connected to the inner wall of the cold chain transport box (1) via a stabilizing rod, the bottom of the receiving box (546) is connected to a conveying pipe (541), the side of the conveying pipe (541) away from the receiving box (546) passes through the cold chain transport box (1) and is connected to the storage box (51), the tops of both ends of the receiving box (546) are connected to movable tracks (545), both sides of the movable tracks (545) are connected to stoppers (544), a sealing cover plate (543) is placed on the top of the receiving box (546), both ends of the bottom of the sealing cover plate (543) are connected to movable slideways (547) used in conjunction with the movable tracks (545), and opposite sides of the two sealing cover plates (543) are inlaid with iron blocks (542).

10. A sampling method for a food cold chain transportation sample sampling device, characterized in that: The sampling method comprises the food cold chain transportation process sample sampling device in claims 1-9 above, and the sampling method further comprises the following steps: Step 1: During the transportation of the food cold chain vehicle, the temperature sensor (213) is always in working condition, and the temperature in the cold chain transport box (1) is monitored in real time. The obtained temperature data is displayed on the on-board screen of the food cold chain vehicle, and the driver observes the temperature in the cold chain transport box (1) while driving. The ultraviolet sterilization lamp (52) will be turned on regularly to sterilize the inside of the storage box (51); Step 2: Before sampling, the preset control system in the on-board screen of the food cold chain vehicle is used to control the linear motor 1 (23) to move from left to right or from right to left outside the sliding rod (22), and at the same time, the linear motor 2 (29) is controlled to move up and down outside the moving rod (211), and at the same time, the video acquisition probe (212) is turned on, and the video acquisition probe (212) is used to collect images of the fresh meat food placed on the cold chain transport rack (4), and the collected image information will be displayed on the on-board screen; the sampling personnel check the fresh meat food placed on the cold chain transport rack (4) through the image information, and during the checking process, the sampler randomly selects fresh meat food at any position on the cold chain transport rack (4) for sampling. After selection, the linear motor 1 (23) and the linear motor 2 (29) drive the sampling tube (2610) to move to the corresponding position, and then the linear motor 1 (23) and the linear motor 2 (29) stop running; Step 3: When sampling, the electric telescopic rod 1 (27) is extended, and the moving rod (211) is driven to move toward the side of the cold chain transport rack (4) through the support sleeve (210), and the sampling tube (2610) is moved toward the fresh meat food. The sampling motor is driven to rotate the spiral conveying reamer (269) and the cutting knife (268). After the electric telescopic rod 1 (27) is extended, the electric telescopic rod 2 (2614) extends the sampling tube (2610) and gradually penetrates into the fresh meat food. Due to the presence of the annular cutting blade surface (2617), the sampling tube (2610) can easily penetrate into the fresh meat. The rotating cutting knife (268) cuts the fresh meat and samples it. The fresh meat sample is conveyed to the side of the drop opening (2616) by the spiral conveying reamer (269). When the second electric telescopic rod (2614) is extended, before the sampling tube (2610) enters the interior of the fresh meat food, the drop opening (2616) is completely shielded by the arc-shaped U-shaped plate (267); during the subsequent sampling process, the drop opening (2616) is continuously shielded, so that the fresh meat sample will not fall from the drop opening (2616); Step 4: After sampling, the electric telescopic rod 1 (27) contracts, driving the sampling tube (2610) to leave the fresh meat and move away from the cold chain transport rack (4). At this time, the electric telescopic rod 2 (2614) does not contract, the drop opening (2616) does not break away from the restraint of the arc-shaped U-shaped plate (267), and the sampling motor stops running. The linear motor 1 (23) moves rightward outside the sliding rod (22), and the linear motor 2 (29) moves up or down outside the moving rod (211). The linear motor 1 (23) moves to the rightmost side of the sliding rod (22), the induced draft fan (55) is turned on, and the electromagnetic exhaust valve is closed. At this time, the sampling tube (2610) corresponds to the sealing cover plate (543). The second electric telescopic rod (2614) contracts to drive the sampling tube (2610) to move toward the sealing cover plate (543) and contact the sealing cover plate (543). Then, the sealing cover plate (543) is pushed toward the inner wall of the cold chain transport box (1) under the cooperation of the moving track (545) and the moving slideway (547). After one side of the sealing cover plate (543) contacts the stopper (544), the second electric telescopic rod (2614) completes the contraction, and the drop opening (2616) is completely separated from the arc-shaped U-shaped plate (267). The sampling motor is turned on to drive the spiral conveying reamer (269) to rotate, and the fresh meat sample in the sampling tube (2610) falls into the receiving box (546) through the drop opening (2616). Under the action of the induced draft fan (55), the fresh meat sample is sucked into the storage box (51) through the conveying pipe (541), and the fresh meat sample is limited by the inclined baffle (58), and falls into the sample storage box (57). After the sample is discharged, the storage box (51) is opened, the sample storage box (57) is taken out, and the fresh meat sample therein is tested; Step 5: After the sample is discharged, the sampling motor is turned off and the electromagnet (2618) is turned on. The electromagnet (2618) adsorbs the iron block (542), and then the second electric telescopic rod (2614) is extended. The cooperation between the electromagnet (2618) and the iron block (542) drives the sealing cover plate (543) to move forward and reset. After the reset, the electromagnet (2618) is powered off, the second electric telescopic rod (2614) stops extending, and the components are reset to their original positions. Step 6: The fresh meat sample is tested to be qualified, the cold chain transport box (1) is opened, the electric push rod (35) is retracted, driving the connecting plate (31) and the limit block (32) to move, and the limit block (32) stops limiting the cold chain transport rack (4). The linear motor 1 (23) is controlled to move rightward outside the sliding rod (22), and the linear motor 2 (29) is controlled to move upward outside the moving rod (211), so that the sampling tube (2610) moves to the middle of the leftmost cold chain transport rack (4), and the electric telescopic rod 1 (27) is extended so that the arc-shaped U-shaped plate (267) corresponds to the beam of the cold chain transport rack (4). The linear motor 1 (23) is controlled to move leftward outside the sliding rod (22), and the arc-shaped U-shaped plate (267) is used to push the cold chain transport rack (4) to the left to the edge of the inlet and outlet of the cold chain transport box (1). The electric telescopic rod 1 (27) is contracted so that the arc-shaped U-shaped plate (267) does not correspond to the beam of the cold chain transport rack (4), and the cold chain transport rack (4) can be taken out using a lifting device. During the removal process, the linear motor 1 (23) moves rightward outside the sliding rod (22) and moves to the middle of the next cold chain transport rack (4), and then the electric telescopic rod 1 (27) extends, so that the arc-shaped U-shaped plate (267) corresponds to the beam of the cold chain transport rack (4), and the cold chain transport rack (4) is removed repeatedly in this way. When the cold chain transport rack (4) is loaded onto the vehicle, the cold chain transport rack (4) is placed on the left edge of the cold chain transport box (1) using a lifting device, and then the arc-shaped U-shaped plate (267) corresponds to the beam of the cold chain transport rack (4), and the linear motor 1 (23) moves rightward, driving the cold chain transport rack (4) to move rightward on the surface of the slide rail (33). After the installation of the cold chain transport rack (4) is completed, the electric push rod (35) extends and uses the limit block (32) to continue to limit the cold chain transport rack (4). If it is unqualified, after the cold chain transport rack (4) is removed, it is processed according to epidemic prevention requirements.

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