Temperature real-time monitoring and early warning device for blueberry cold-chain logistics transportation

Abstract

The invention relates to the technical field of cold-chain logistics, in particular to a temperature real-time monitoring and early warning device for blueberry cold-chain logistics transportation, which comprises a transportation box and a hollow vertical block, the vertical block is fixedly connected in the transportation box, the side wall of the vertical block is fixedly connected with three transverse plates, and the cross section of each transverse plate is in a concave shape with an opening facing one side. Three through holes are formed in the side wall of each vertical block, and the vertical blocks communicate with the interior of the transverse plate through the corresponding through holes. Wherein the two transverse plates are each internally provided with a monitoring mechanism, each monitoring mechanism is composed of a reciprocating assembly, a rotating assembly, a driving assembly and a cleaning assembly, each reciprocating assembly comprises two rotating shafts, the rotating shafts are rotationally connected with the inner top walls of the transverse plates through bearings, and mounting holes are formed in the lower surfaces of the transverse plates. And the inner side wall of the mounting hole is slidably connected with a follower plate. The device has the advantages that the monitoring range is wider, the influence of the icing condition is small, and meanwhile, the self-cleaning of the probe can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of cold chain logistics, and in particular to a real-time temperature monitoring and early warning device for cold chain logistics transportation of blueberries. Background Art

[0002] Cold chain transportation is a common mode of transportation, whereby goods are transported in a low-temperature environment. It is commonly used to transport fruits, vegetables, aquatic products, and other items. Blueberries, a highly nutritious but perishable fruit, are also commonly transported through the cold chain. At room temperature, blueberries are susceptible to microbial contamination, enzymatic reactions, and oxidation, which can cause the fruit to deteriorate and rot, losing both its edible and economic value. Generally speaking, the ideal transportation temperature is around 0-5°C. Cold chain transportation of blueberries requires the use of temperature monitoring and early warning devices to monitor the internal temperature in real time to ensure the ideal temperature for transport and avoid temperature anomalies that could damage the blueberries and cause unnecessary economic losses. Existing logistics vehicles store goods at low temperatures, but their temperature monitoring range is relatively general. Due to space allocation and technical investment, accurate real-time temperature detection is not possible.

[0003] Existing invention patents, such as the application number CN113054791B, the publication date is 2022-04-15, and the name is a Chinese invention patent for a temperature real-time detection type intelligent logistics monitoring device. It is mainly composed of partitions, top plates, middle plates, side strips, guide grooves, bottom plates, pads, controllers, control panels, guide devices and other structures. Partitions, top plates, middle plates and bottom plates are used to group logistics boxes, and the reciprocating movement of the monitoring device is used to realize temperature monitoring of logistics items. Compared with traditional box-type sealed fixed-point monitoring, the temperature monitoring of the present invention is more efficient, the monitoring feedback is more agile, and the monitoring range is more comprehensive, which effectively ensures the temperature control of logistics items during transportation or storage, and improves the quality of logistics services.

[0004] In this technical solution, a threaded screw is used for transmission to perform reciprocating motion. However, considering the working environment of the device, it is located in a cold chain transport box with a relatively low temperature, and the interior is in a low-temperature state. During the operation of the transport box, it is difficult to avoid ice formation on the screw. Once ice forms, the reciprocating motion will be interfered with, affecting normal monitoring, and manual regular cleaning is also cumbersome. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems in the prior art and to propose a real-time temperature monitoring and early warning device for cold chain logistics transportation of blueberries.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A real-time temperature monitoring and early warning device for cold chain logistics transportation of blueberries, comprising a transport box and a hollow vertical block. The vertical block is fixedly connected to the transport box. Three horizontal plates are fixedly connected to the side walls of the vertical block. The cross-section of the horizontal plate is a concave shape with the opening facing one side. The side walls of the vertical block are provided with three through holes. The vertical block communicates with the interior of the horizontal plate through the corresponding through holes.

[0008] Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion.

[0009] An airflow circulation mechanism is provided in the vertical block. The airflow circulation mechanism comprises a plurality of air holes. The air holes are opened on the side wall of the vertical block close to the horizontal plate.

[0010] Furthermore, the reciprocating assembly also includes two first gears, which are fixedly connected to the corresponding rotating shafts, and the two first gears are jointly tensioned and meshed with a toothed belt, and the toothed belt is fixedly connected with a fixing pin, and the fixing pin is fixedly connected to the upper surface of the follower plate, and the follower plate is fixedly connected to the lower surface of the toothed belt, and the lower surface of the connecting shaft is fixedly connected with an infrared temperature probe.

[0011] Furthermore, the rotating assembly also includes a second gear, which is fixedly connected to the connecting shaft and meshes with the spur rack.

[0012] Furthermore, the drive assembly also includes a servo motor, which is fixedly connected to the inner bottom wall of the vertical block through a bracket, and the output shaft of the servo motor is fixedly connected to the second bevel gear, and the drive shaft is fixedly connected to a first bevel gear and two second pulleys, and the first bevel gear is meshed with the second bevel gear, and one of the rotating shafts in each of the horizontal plates is fixedly connected to the first pulley, and the first pulley and the corresponding second pulley are jointly tensioned with a synchronous belt.

[0013] Furthermore, the cleaning assembly also includes a third gear, the third gear is fixedly connected to the rotating rod, the upper surface of the follower plate is fixedly connected to an arc rack, the arc rack is meshed with the third gear, the inner side wall of the horizontal plate is fixedly connected to a main sleeve, the horizontal plate is passed through and fixedly connected to a plurality of air pipes, one end of the air pipe extends through the horizontal plate and is fixedly connected to the main sleeve, the other end extends through the outside of the horizontal plate and is fixedly connected to a secondary sleeve, a piston is sealingly and slidably connected in the main sleeve, and the piston and the third gear are connected to a connecting rod for common rotation.

[0014] Furthermore, the air flow circulation mechanism also includes two functional plates, which are rotatably connected to multiple fan shafts through bearings. The end of the fan shaft close to the drive shaft is fixedly connected to the fourth bevel gear, and the end of the fan shaft away from the drive shaft is fixedly connected to the fan. The drive shaft is fixedly connected to multiple third bevel gears, and the third bevel gears are engaged with the corresponding fourth bevel gears.

[0015] Furthermore, the toothed belt is made of silicone rubber, and the surface of the toothed belt is coated with a nano-hydrophobic coating.

[0016] Furthermore, a damping washer is provided at the rotation connection between the connecting shaft and the follower plate.

[0017] Furthermore, the number of teeth of the spur rack is an integer multiple of the number of teeth of the second gear.

[0018] Furthermore, the number of teeth of the third bevel gear is greater than the number of teeth of the fourth bevel gear.

[0019] The present invention has the following advantages:

[0020] 1. The servo motor drives the drive shaft to rotate, thereby causing the rotating shaft to rotate. The gear and the toothed belt are engaged to move the toothed belt, which in turn drives the follower plate to reciprocate, thereby causing the infrared temperature probe to reciprocate, ensuring that it can monitor the temperature at various locations in the transport box, thereby improving the detection range and detection accuracy.

[0021] 2. The reciprocating motion of the infrared temperature measuring probe is achieved by meshing the toothed belt with the first gear. Compared with the existing screw-driven method, the probe is less affected by the icing of the driving components, thus avoiding the interference of the reciprocating motion caused by icing and ensuring the continuous monitoring.

[0022] 3. During the movement of the follower plate, the second gear will alternately mesh with the two spur racks, causing the infrared temperature probe to continuously rotate during the reciprocating motion, further increasing its monitoring range. Only one infrared temperature probe is needed to complete the temperature monitoring of the space between the two horizontal plates, greatly reducing the cost of the device.

[0023] 4. When the follower plate moves to the third gear, it will also drive the third gear to rotate through the meshing of the arc rack and the third gear, and then drive the piston to reciprocate through the connecting rod, and finally make the auxiliary sleeve continuously blow and suck air, so that a certain amount of airflow is generated at the infrared temperature probe. The infrared temperature probe surface is cleaned by this airflow, thereby achieving a self-cleaning effect and preventing impurities from affecting the temperature measurement accuracy;

[0024] 5. The setting of the auxiliary sliding sleeve also plays a certain marking role. The stacking height of the goods cannot be higher than the auxiliary sliding sleeve, otherwise it may interfere with the movement of the infrared temperature measuring probe, which greatly protects the infrared temperature measuring probe;

[0025] 6. When the drive shaft rotates, it will also drive the fan to rotate through the engagement of the third bevel gear and the fourth bevel gear. The rotation of the fan will make the air flow in a directional manner, so that the air in the transport box will flow in a directional manner, so that the cold air can better enter the gaps between the stacked goods inside, thereby ensuring the uniform temperature of the goods. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of a real-time temperature monitoring and early warning device for cold chain logistics transportation of blueberries proposed by the present invention, located inside a transport box;

[0027] Figure 2 This is a structural schematic diagram of a real-time temperature monitoring and early warning device for cold chain logistics transportation of blueberries proposed by the present invention;

[0028] Figure 3 This is a schematic diagram of the internal structure of a real-time temperature monitoring and early warning device for cold chain logistics transportation of blueberries proposed by the present invention, in longitudinal section;

[0029] Figure 4 for Figure 3 A magnified view of point A in the figure;

[0030] Figure 5 for Figure 3 Enlarged view of point B in FIG.

[0031] Figure 6 This is a schematic diagram of the internal structure of a cross-section of a real-time temperature monitoring and early warning device for cold chain logistics transportation of blueberries proposed by the present invention;

[0032] Figure 7 for Figure 6 Enlarged view of point C in the figure;

[0033] Figure 8 This is a schematic diagram of the internal structure of another cross-section of a real-time temperature monitoring and early warning device for cold chain logistics transportation of blueberries proposed by the present invention;

[0034] Figure 9This is a schematic diagram of the internal structure of another longitudinal section of a real-time temperature monitoring and early warning device for cold chain logistics transportation of blueberries proposed by the present invention.

[0035] In the figure: 1 vertical block, 2 horizontal plate, 3 through hole, 4 rotating shaft, 5 first gear, 6 toothed belt, 7 mounting hole, 8 fixing pin, 9 follower plate, 10 connecting shaft, 11 infrared temperature probe, 12 first pulley, 13 driving shaft, 14 second pulley, 15 synchronous belt, 16 first bevel gear, 17 servo motor, 18 second bevel gear, 19 second gear, 20 fixing plate, 21 straight rack, 22 arc rack, 23 rotating rod, 24 main slide, 25 air pipe, 26 secondary slide, 27 piston, 28 third gear, 29 connecting rod, 30 air hole, 31 function plate, 32 fan shaft, 33 fan, 34 third bevel gear, 35 fourth bevel gear, 101 transport box. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] Example

[0038] Reference Figure 1-9 A temperature real-time monitoring and early warning device for cold chain logistics transportation of blueberries includes a transport box 101 and a hollow vertical block 1. The vertical block 1 is fixedly connected to the transport box 101. Three horizontal plates 2 are fixedly connected to the side wall of the vertical block 1. The cross section of the horizontal plate 2 is a concave shape with the opening facing one side. Three through holes 3 are opened on the side wall of the vertical block 1. The vertical block 1 is connected to the inside of the horizontal plate 2 through the corresponding through holes 3.

[0039] Wherein, a group of monitoring mechanisms are provided in each of the two horizontal plates 2, and the monitoring mechanism consists of a reciprocating assembly, a rotating assembly, a driving assembly and a cleaning assembly. The reciprocating assembly includes two rotating shafts 4, which are rotatably connected to the inner top wall of the horizontal plate 2 through a bearing. A mounting hole 7 is provided on the lower surface of the horizontal plate 2, and a follower plate 9 is slidably connected to the inner side wall of the mounting hole 7. The lower surface of the follower plate 9 is rotatably connected to the connecting shaft 10 through a bearing. The rotating assembly includes a plurality of fixed plates 20, which are fixedly connected to the lower surface of the horizontal plate 2, and the plurality of fixed plates 20 are commonly fixedly connected to two straight racks 21. The driving assembly includes a driving shaft 13, which is rotatably connected between the inner top wall and the inner bottom wall of the vertical block 1 through a bearing. The cleaning assembly includes a rotating rod 23, which is rotatably connected to the inner bottom wall of the horizontal plate 2 through a bearing;

[0040] An air circulation mechanism is provided in the vertical block 1 , and the air circulation mechanism includes a plurality of air holes 30 . The air holes 30 are opened on the side wall of the vertical block 1 close to the horizontal plate 2 .

[0041] The reciprocating assembly also includes two first gears 5, the first gear 5 is fixedly connected to the corresponding rotating shaft 4, the two first gears 5 are jointly tensioned and meshed with a toothed belt 6, the toothed belt 6 is fixedly connected with a fixing pin 8, the fixing pin 8 is fixedly connected to the upper surface of the follower plate 9, the follower plate 9 is fixedly connected to the lower surface of the toothed belt 6, and the lower surface of the connecting shaft 10 is fixedly connected with an infrared temperature measuring probe 11. The infrared temperature measuring probe 11 can measure the temperature of the goods and automatically alarm when the temperature exceeds a certain range. This is a prior art and will not be described in detail here. When the driving shaft 13 is driven, the second pulley 14 is driven to rotate, and the second pulley 14 rotates to drive the first pulley through the synchronous belt 15 The wheel 12 rotates, and the first pulley 12 rotates to rotate the rotating shaft 4, which in turn rotates the first gear 5. The rotation of the first gear 5 drives the toothed belt 6 to move, and the movement of the toothed belt 6 drives the follower plate 9 to move with it. It makes reciprocating motion according to the shape of the toothed belt 6, so that the infrared temperature measuring probe 11 under the follower plate 9 reciprocates with it. During the reciprocating motion, the goods in the entire transport box 101 are scanned and their temperature is monitored, which greatly improves the temperature measuring range of the infrared temperature measuring probe 11 and avoids the influence of ice on the screw surface as in the prior art, thereby greatly improving the stability of the device operation.

[0042] The rotating assembly further includes a second gear 19, which is fixedly connected to the connecting shaft 10 and meshes with the spur rack 21. There is a certain misalignment between the connecting shaft 10 and the rotating shaft 4 (such as Figure 4 As shown), the second gear 19 will not mesh with the two spur racks 21 at the same time during the movement, thereby avoiding the occurrence of interference movement. The follower plate 9 will also make the second gear 19 alternately mesh with the two symmetrical spur racks 21 in the process of moving with the toothed belt 6. When the second gear 19 is in meshing state with the spur rack 21, the movement of the follower plate 9 will cause the second gear 19 to rotate through the meshing with the spur rack 21, thereby causing the infrared temperature probe 11 to rotate accordingly, that is, the infrared temperature probe 11 will rotate while it reciprocates, so that it can monitor the temperature of various parts in the transport box 101, further improving the monitoring range, so that only one infrared temperature probe 11 is needed to complete the temperature measurement of the goods between the two horizontal plates 2, greatly reducing the equipment cost.

[0043] The drive assembly also includes a servo motor 17, which is fixedly connected to the inner bottom wall of the vertical block 1 through a bracket. The output shaft of the servo motor 17 is fixedly connected to the second bevel gear 18, and the drive shaft 13 is fixedly connected to a first bevel gear 16 and two second pulleys 14. The first bevel gear 16 is meshed with the second bevel gear 18. One of the rotating shafts 4 in each horizontal plate 2 is fixedly connected to the first pulley 12. The first pulley 12 and the corresponding second pulley 14 are jointly tensioned with a synchronous belt 15. The first pulley 12 and the second pulley 14 are provided with teeth on the outside (not shown in the figure), and teeth are also provided on the surface of the synchronous belt 15 (not shown in the figure). The first pulley 12, the second pulley 14 and the synchronous belt 15 are meshingly driven to ensure smooth transmission.

[0044] The cleaning assembly also includes a third gear 28, which is fixedly connected to the rotating rod 23. The upper surface of the follower plate 9 is fixedly connected to an arc rack 22, which meshes with the third gear 28. The inner wall of the horizontal plate 2 is fixedly connected to the main sliding sleeve 24. The horizontal plate 2 is penetrated and fixedly connected with a plurality of air pipes 25. One end of the air pipe 25 extends through the horizontal plate 2 and is fixedly connected to the main sliding sleeve 24, and the other end extends through the outside of the horizontal plate 2 and is fixedly connected to the auxiliary sliding sleeve 26. The main sliding sleeve 24 is sealed and slidably connected with a piston 27. The piston 27 and the third gear 28 are rotated together and are connected to a connecting rod 29. The connecting rod 29 is connected to the The pin shaft is rotatably connected with the piston 27 and the third gear 28. When the follower plate 9 moves to the rotating shaft 4 away from the driving shaft 13, the arc rack 22 on the follower plate 9 will mesh with the third gear 28. The rotation of the third gear 28 will drive the piston 27 to reciprocate through the connecting rod 29. The reciprocating motion of the piston 27 will cause the auxiliary sleeve 26 to generate airflow, which blows towards the moving infrared temperature probe 11. The surface of the infrared temperature probe 11 is cleaned by the faster airflow, achieving a self-cleaning effect, avoiding impurities or dust from affecting the temperature measurement accuracy, and avoiding manual regular cleaning, greatly reducing labor intensity.

[0045] It should be noted that the cross-sectional area of ​​the main sleeve 24 is 10-20 times that of the auxiliary sleeve 26, so that during the reciprocating motion of the piston 27, the gas generated in the auxiliary sleeve 26 flows faster, thereby better cleaning impurities on the surface of the infrared temperature probe 11.

[0046] It is worth mentioning that the setting of the auxiliary sleeve 26 also plays a certain marking role. The stacking height of the goods shall not be higher than the lower surface of the auxiliary sleeve 26, otherwise the goods may interfere with the movement of the infrared temperature measuring probe 11, thereby playing a certain protective role for the infrared temperature measuring probe 11.

[0047] The air circulation mechanism also includes two functional plates 31, which are rotatably connected to a plurality of fan shafts 32 through bearings. The end of the fan shaft 32 close to the drive shaft 13 is fixedly connected to a fourth bevel gear 35, and the end of the fan shaft 32 away from the drive shaft 13 is fixedly connected to a fan 33. The drive shaft 13 is fixedly connected to a plurality of third bevel gears 34, and the third bevel gears 34 are meshed with the corresponding fourth bevel gears 35. The two fourth bevel gears 35 at the same height are symmetrical to each other, and the fan blades of the two fans 33 at the same height are tilted in opposite directions, thereby ensuring that all fans 33 only direct air in one direction. To achieve this, servo motor 17 meshes with first bevel gear 16 and second bevel gear 18 to rotate drive shaft 13. This rotation of drive shaft 13 drives third bevel gear 34, which in turn drives meshed fourth bevel gear 35. Fourth bevel gear 35, in turn, drives fan 33 via fan shaft 32. The rotation of fan 33 creates a directional flow of air, which enters and exits through air holes 30. This creates a directional flow of air within transport box 101, allowing cooler air to more quickly reach the stacked goods in the middle, resulting in a more uniform internal temperature.

[0048] The toothed belt 6 is made of silicone rubber, and the surface of the toothed belt 6 is coated with a nano-hydrophobic coating. It should be noted that the synchronous belt 15 is also made of silicone rubber. Silicone rubber not only has good elasticity, but also has a small thermal expansion and contraction rate, and is almost unaffected by temperature changes, thereby effectively avoiding volume changes caused by temperature changes, resulting in the toothed belt 6 and the synchronous belt 15 being separated. The nano-hydrophobic coating on its surface can prevent water vapor from adhering to its surface and causing freezing.

[0049] A damping washer is provided at the rotation connection between the connecting shaft 10 and the follower plate 9. The setting of the damping washer makes there be a certain friction resistance in the rotation between the connecting shaft 10 and the follower plate 9. Through the setting of this resistance, the connecting shaft 10 will only rotate when the second gear 19 is engaged with the spur rack 21, thereby preventing external force from causing it to rotate and affecting the direction of the infrared temperature probe 11.

[0050] The number of teeth of the spur rack 21 is an integer multiple of the number of teeth of the second gear 19, so that after the second gear 19 and the spur rack 21 are engaged and rotated, they rotate exactly an integer number of circles, so that after the rotation, the infrared temperature measuring probe 11 still maintains its original direction, avoiding the direction being unfixed after the rotation is completed.

[0051] The number of teeth of the third bevel gear 34 is greater than that of the fourth bevel gear 35 . The third bevel gear 34 with a larger number of teeth can drive the fourth bevel gear 35 with a smaller number of teeth to rotate faster, thereby causing the fan 33 to rotate faster and the air flow to flow faster.

[0052] In the present invention, the blueberries to be transported are stacked between the two transverse plates 2, and the stacking height thereof shall not be higher than the lower surface of the auxiliary sliding sleeve 26. After stacking, the transport box 101 is closed, and the servo motor 17 is turned on to start transportation.

[0053] During transportation, the servo motor 17 rotates the drive shaft 13 through the engagement of the first bevel gear 16 and the second bevel gear 18. The rotation of the drive shaft 13 will drive the third bevel gear 34 to rotate, and the third bevel gear 34 will drive the fourth bevel gear 35 engaged with it to rotate. The fourth bevel gear 35 drives the fan 33 to rotate through the fan shaft 32. The rotation of the fan 33 will cause the air to flow in a directional manner, and the air will enter and exit from the air hole 30, so that the air in the transport box 101 will flow in a directional manner, so that the low-temperature air can enter the stacked goods in the middle part more quickly, thereby making the internal temperature more uniform.

[0054] When the drive shaft 13 rotates, it will also drive the second pulley 14 to rotate. The rotation of the second pulley 14 drives the first pulley 12 to rotate through the synchronous belt 15. The rotation of the first pulley 12 causes the rotating shaft 4 to rotate, and then causes the first gear 5 to rotate. The rotation of the first gear 5 drives the toothed belt 6 to move. The movement of the toothed belt 6 will drive the follower plate 9 to move with it, and it will make reciprocating motion according to the shape of the toothed belt 6, so that the infrared temperature measuring probe 11 under the follower plate 9 will reciprocate with it. During the reciprocating motion, the goods in the entire transport box 101 are scanned and their temperature is monitored. When the temperature of the goods exceeds a range, an automatic alarm is triggered.

[0055] When the follower plate 9 moves with the toothed belt 6, the second gear 19 will be alternately engaged with the two symmetrical spur racks 21. When the second gear 19 is engaged with the spur racks 21, the movement of the follower plate 9 will cause the second gear 19 to rotate through the engagement with the spur racks 21, thereby causing the infrared temperature probe 11 to rotate accordingly. That is, the infrared temperature probe 11 will rotate while it reciprocates, so that it can monitor the temperature of various parts inside the transport box 101.

[0056] When the follower plate 9 moves to the rotating shaft 4 on the side away from the drive shaft 13, the arc rack 22 on the follower plate 9 will engage with the third gear 28. The rotation of the third gear 28 will drive the piston 27 to reciprocate through the connecting rod 29. The reciprocating motion of the piston 27 will cause the secondary sleeve 26 to generate airflow, which blows towards the moving infrared temperature probe 11. The surface of the infrared temperature probe 11 is cleaned by the faster airflow to prevent impurities or dust from affecting the temperature measurement accuracy.

[0057] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A temperature real-time monitoring and early warning device for cold chain logistics transportation of blueberries, comprising a transport box and a hollow vertical block, wherein the vertical block is fixedly connected to the transport box, characterized in that: The side walls of the vertical blocks are fixedly connected to three horizontal plates, the cross-section of the horizontal plates is a concave shape with the opening facing one side, and the side walls of the vertical blocks are provided with three through holes, and the vertical blocks are connected to the interior of the horizontal plates through the corresponding through holes; Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion. An air circulation mechanism is provided in the vertical block. The air circulation mechanism comprises a plurality of air holes. The air holes are opened on the side wall of the vertical block close to the horizontal plate.

2. A temperature real-time monitoring and early warning device for cold chain logistics transportation of blueberries according to claim 1, characterized in that: The reciprocating assembly also includes two first gears, which are fixedly connected to the corresponding rotating shafts. The two first gears are jointly tensioned and meshed with a toothed belt. The toothed belt is fixedly connected with a fixing pin, which is fixedly connected to the upper surface of the follower plate. The follower plate is fixedly connected to the lower surface of the toothed belt, and the lower surface of the connecting shaft is fixedly connected to an infrared temperature measuring probe.

3. A temperature real-time monitoring and early warning device for cold chain logistics transportation of blueberries according to claim 1, characterized in that: The rotating assembly further includes a second gear, the second gear is fixedly connected to the connecting shaft, and the second gear is meshed with the spur rack.

4. A temperature real-time monitoring and early warning device for cold chain logistics transportation of blueberries according to claim 1, characterized in that: The drive assembly also includes a servo motor, which is fixedly connected to the inner bottom wall of the vertical block through a bracket, and the output shaft of the servo motor is fixedly connected to the second bevel gear, and the drive shaft is fixedly connected to a first bevel gear and two second pulleys, and the first bevel gear is meshed with the second bevel gear. One of the rotating shafts in each of the horizontal plates is fixedly connected to the first pulley, and the first pulley and the corresponding second pulley are jointly tensioned with a synchronous belt.

5. The real-time temperature monitoring and early warning device for cold chain logistics transportation of blueberries according to claim 1 is characterized in that: The cleaning assembly also includes a third gear, which is fixedly connected to the rotating rod, an arc rack is fixedly connected to the upper surface of the follower plate, and the arc rack is meshed with the third gear. The inner side wall of the horizontal plate is fixedly connected to a main sleeve, and a plurality of air pipes are fixedly connected to the horizontal plate. One end of the air pipe extends into the horizontal plate and is fixedly connected to the main sleeve, and the other end extends to the outside of the horizontal plate and is fixedly connected to a secondary sleeve. A piston is sealingly and slidingly connected in the main sleeve, and the piston and the third gear are connected to a connecting rod for rotation together.

6. The temperature real-time monitoring and early warning device for cold chain logistics transportation of blueberries according to claim 1 is characterized in that: The airflow circulation mechanism also includes two functional plates, which are rotatably connected to multiple fan shafts through bearings. The end of the fan shaft close to the drive shaft is fixedly connected to the fourth bevel gear, and the end of the fan shaft away from the drive shaft is fixedly connected to the fan. The drive shaft is fixedly connected to multiple third bevel gears, and the third bevel gears are engaged with the corresponding fourth bevel gears.

7. The real-time temperature monitoring and early warning device for cold chain logistics transportation of blueberries according to claim 2 is characterized in that: The toothed belt is made of silicone rubber, and the surface of the toothed belt is coated with a nano-hydrophobic coating.

8. The real-time temperature monitoring and early warning device for cold chain logistics transportation of blueberries according to claim 2 is characterized in that: A damping washer is provided at the rotation connection between the connecting shaft and the follower plate.

9. The real-time temperature monitoring and early warning device for cold chain logistics transportation of blueberries according to claim 3 is characterized in that: The number of teeth of the spur rack is an integer multiple of the number of teeth of the second gear.

10. The real-time temperature monitoring and early warning device for cold chain transportation of blueberries according to claim 6, characterized in that: The number of teeth of the third bevel gear is greater than the number of teeth of the fourth bevel gear.

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