Rapid unloading device for closed refrigeration house

Abstract

The invention relates to the technical field of logistics equipment, and discloses a quick unloading device for a closed refrigeration house, which comprises a bottom plate, and the top of the bottom plate is provided with a connecting bin butted with an inlet and an unloading outlet of the refrigeration house; the flexible butt-joint mechanism is arranged on the side, close to the unloading opening, of the connecting bin and used for conducting butt-joint sealing treatment on the connecting bin and a container of the refrigerated truck during unloading; and the compensation adjusting mechanism is arranged on the connecting bin. By adding and arranging a compensation adjusting mechanism, before frozen products are put in storage, the mechanism can accurately cope with instantaneous temperature difference impact when a truck is in butt joint with a refrigeration house, the temperature in the refrigeration house is monitored in real time through a resistance-type temperature sensor, and when the truck is opened to cause temperature rise, a PID controller can rapidly trigger an electromagnetic control valve; the liquid nitrogen in the high-pressure storage tank is accurately jetted through the trace jet row, the temperature in the bin is pulled back to a target interval within a short time, and myoglobin oxidation or taste deterioration of cargoes due to short-term temperature change is avoided.

Description

Technical Field

[0001] This invention relates to the field of logistics equipment technology, specifically to a rapid unloading device for enclosed cold storage. Background Technology

[0002] Special goods, due to their unique physicochemical properties, have stringent requirements for storage environments, necessitating long-term stable preservation in sealed cold storage facilities. Deep-sea tuna is a prime example. The freshness and edibility of tuna are highly dependent on stable cryogenic storage conditions. The myoglobin in its flesh is extremely sensitive to temperature changes, and the muscle fiber structure is prone to irreversible damage in unstable environments. If the storage environment cannot maintain a consistently cryogenic state, it will not only lead to myoglobin oxidation, causing a significant deterioration in the meat's color, but also damage the integrity of the muscle tissue, resulting in a noticeably tougher texture. This directly impacts the product's commercial value and the dining experience. Therefore, the stability of the cryogenic environment is a core prerequisite for ensuring the quality of tuna.

[0003] In the cold chain logistics of tuna, the docking process with cold storage after truck transport is a critical point where temperature control is easily compromised. The natural differences between the truck compartment and the interior of the cold storage mean that the brief exposure during docking can cause a sudden temperature shock, disrupting the stable cryogenic state of the tuna. Even short-term temperature fluctuations can trigger quality deterioration. Simultaneously, the conveyor equipment inside the cold storage, constantly operating in a cryogenic environment, faces problems such as material embrittlement at low temperatures and component lubrication failure. This can easily lead to mechanical failures and transport interruptions, affecting not only the efficiency of cargo transfer but also potentially causing physical damage to the tuna due to equipment jams or collisions. These problems, combined, not only restrict the operational efficiency of cryogenic cold chain logistics but also pose a challenge to the quality assurance of high-value ingredients like tuna, becoming a critical technical pain point that urgently needs to be addressed in the industry.

[0004] Therefore, those skilled in the art have proposed a closed-loop cold storage rapid unloading device to solve the aforementioned technical problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a closed-loop cold storage rapid unloading device, which solves the problem that frozen products are prone to spoilage due to instantaneous temperature fluctuations during transfer.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a closed-type cold storage rapid unloading device, comprising: a base plate, the top of which is provided with a connecting compartment for docking with the cold storage entrance and unloading outlet; a flexible docking mechanism, located on the side of the connecting compartment near the unloading outlet, for sealing the connecting compartment with the refrigerated truck cargo box during unloading; a compensation and adjustment mechanism, located above the connecting compartment, for compensating for the instantaneous temperature difference impact generated inside the connecting compartment when the refrigerated truck cargo box is opened; a balance adjustment mechanism, located on the upper part of the base plate, for adjusting the balance during the conveying process; and a rapid transfer mechanism, located above the base plate, for frictionless conveying and transfer of frozen products.

[0007] Preferably, the flexible docking mechanism includes a dispersing seat, which is provided on the side of the connecting compartment away from the cold storage entrance. A folding docking compartment is located in the middle of one side of the dispersing seat. Multiple interconnected honeycomb inflation units are equidistantly arranged in the middle of the inner side of the folding docking compartment, and the interior of the folding docking compartment is connected to the interior of the dispersing seat. Multiple micro air pumps are equidistantly arranged on both sides of the outer wall of the connecting compartment, and the exhaust ports of the micro air pumps are all connected to the interior of the dispersing seat.

[0008] Preferably, the flexible docking mechanism further includes limiting fasteners, and multiple limiting fasteners are rotatably connected at equal intervals on one side of the dispersing seat. An aluminum foil reflective layer is provided on the inner side of the folding docking compartment, and a polyurethane insulation layer is provided on the outer side of the folding docking compartment.

[0009] Preferably, the flexible docking mechanism further includes a flexible fitting seat, the upper part of the base plate is slidably connected to the flexible fitting seat, one side of the flexible fitting seat is connected to one side of the folding docking compartment, and multiple partition slides are equidistantly arranged inside the flexible fitting seat, and strip magnetic seats are slidably connected between adjacent partition slides.

[0010] Preferably, the compensation and adjustment mechanism includes a resistance temperature sensor, and multiple resistance temperature sensors are equidistantly arranged on the inner top of the connecting chamber. A PID controller is arranged on one side of the outer wall of the connecting chamber, and an ultra-low temperature compressor and an alloy evaporator are respectively arranged on one side of the middle part of the top of the connecting chamber.

[0011] Preferably, the compensation and adjustment mechanism further includes a micro-injection nozzle. A micro-injection nozzle is provided on the inner wall of the connecting chamber near the dispersion seat. A high-pressure storage tank is provided at the top center of the connecting chamber. The high-pressure storage tank is filled with liquid nitrogen. The discharge end of the high-pressure storage tank is connected to the liquid inlet of the micro-injection nozzle through a connecting pipe. An electromagnetic control valve is provided on the connecting pipe.

[0012] Preferably, the rapid transfer mechanism includes superconducting magnetic rails, with superconducting magnetic rails provided on both sides of the top center of the base plate, a magnetic levitation tray provided on the upper part of the base plate, and a track moving seat provided inside each of the superconducting magnetic rails. The four bottom corners of the magnetic levitation tray are respectively connected to the top of the corresponding track moving seat, and a linear motor for controlling the movement of the track moving seat is provided at the center of one end of each superconducting magnetic rail.

[0013] Preferably, the rapid transfer mechanism further includes a stator coil holder, stator coil holders are provided at the center of both sides of the superconducting magnetic track, multiple permanent magnets are equidistantly arranged at both sides of the bottom edge of the magnetic levitation tray, and a mover coil holder is provided at the center of the bottom end of the magnetic levitation tray.

[0014] Preferably, the balance adjustment mechanism includes split-type storage seats, and the top of the magnetic levitation tray is provided with multiple split-type storage seats. The bottom center of each split-type storage seat is connected to the corresponding position at the top of the magnetic levitation tray through a ball joint. A folding limiting plate is rotatably connected to one side of the top of each split-type storage seat, and a pressure sensor is provided at the front center of the magnetic levitation tray.

[0015] Preferably, the balance adjustment mechanism further includes traction springs. Four traction springs are equidistantly arranged at the top center of the magnetic levitation tray. The other end of each traction spring is connected to the bottom corner of the corresponding split-type storage seat. The magnetic levitation tray has multiple moving cavities arranged in a circular array inside. A piston seat is slidably connected inside each moving cavity. The piston seat and the other part of the moving cavity form a sealed cavity. A rotating rod is rotatably connected to the inner center of the piston seat. Edge limiting seats are provided at both ends of the rotating rod. Torsion springs are provided on both sides of the middle part of the rotating rod. One end of the rotating rod is connected to a connecting rope. The other end of the connecting rope passes through the magnetic levitation tray and is connected to the corner of the corresponding split-type storage seat.

[0016] Working Principle: After the refrigerated truck transports the refrigerated products to the designated location, the driver moves the truck to the floor position. The flexible docking mechanism then activates. Based on the truck's parking position, the operator starts the micro-pump on the connecting compartment. This micro-pump injects gas into the distribution seat on the connecting compartment. The gas is then evenly distributed into the honeycomb inflation units within the folding docking compartment. As the gas content in each honeycomb inflation unit increases, the folding docking compartment unfolds from its retracted state. Simultaneously, the flexible bonding seat slides along the floor towards the refrigerated compartment. Once aligned with the compartment, the operator manually adjusts the position of the magnetic strip on the partition plate within the flexible bonding seat, ensuring it aligns with the edge contour of the refrigerated compartment. Then, the strip magnetic chuck is magnetically attached to the edge of the refrigerated truck compartment. While the chuck is attaching, it compresses the flexible fitting between the refrigerated truck compartment and the refrigerated truck compartment, causing deformation and sealing the connection between the folding docking compartment and the refrigerated truck compartment. After sealing the docking compartment, the staff adjusts the interior of the docking compartment to a suitable temperature. Once the temperature is adjusted, the aluminum foil reflective layer and polyurethane insulation layer on the folding docking compartment maintain the temperature, ensuring suitability for refrigerated goods upon entry. This completes the flexible docking and sealing process between the cold storage and the refrigerated truck compartment. Then, the compensation adjustment mechanism is activated, and the refrigerated truck compartment is opened. Due to the temperature change between the truck compartment and the docking compartment, the temperature inside the truck compartment will cause a momentary temperature difference impact on the interior of the docking compartment. At this time, the resistance temperature sensor inside the docking compartment monitors the internal temperature change in real time. If the temperature rises momentarily due to the opening of the truck door, the PID sensor on the docking compartment will... The controller activates the solenoid valve, allowing liquid nitrogen from the high-pressure storage tank to enter the micro-injection system in the connecting chamber via a connecting pipe. This micro-injection quickly brings the temperature of the connecting chamber back to the target range. Once the temperature in the connecting chamber reaches the set standard, the PID controller resets the solenoid valve on the connecting chamber. Then, the cryogenic compressor and alloy evaporator on the connecting chamber start to maintain the temperature within the connecting chamber, thus preventing temperature fluctuations during subsequent cargo transfer. This completes the temperature compensation and regulation process during cargo transfer.Afterwards, the balancing mechanism is activated. Once the temperature within the connecting compartment is adjusted to the set range, workers transfer the frozen products from the refrigerated truck compartment to the split-type storage seat. Simultaneously, the frozen products are restrained by the folding limiting plates on the seat. As more frozen products accumulate on the split-type storage seat, and as the uneven weight distribution causes it to tilt outwards, the frozen products press down on the outer corners of the split-type storage seat. This causes the split-type storage seat to tilt and rotate under the action of the ball joint on the magnetic levitation tray. During this tilting and rotation, the bottom of the split-type storage seat... The traction springs in the opposite direction change from a contracted state to a stretched state due to their tilt. Simultaneously, during this stretching process, the tilted split-type storage seat on the magnetic levitation tray also assists in resetting. Furthermore, as the split-type storage seat tilts and rotates, corresponding positions at opposite corners inside the split-type storage seat also move upwards synchronously. During this upward movement, the split-type storage seat pulls the piston seat within the sealed cavity via a connecting rope. As the connecting rope moves, it pulls the rotating rod inside the piston seat to rotate synchronously. During the rotation of the rotating rod, the torsion spring on it also tightens synchronously, applying a reverse pulling force to the corresponding position at the bottom of the split-type storage seat. Simultaneously, after the rotating rod reaches its limit position, the connecting rope pulls the piston seat inside the moving cavity to move. Under the action of the sealed cavity inside the moving cavity, the tilt angle of the split-type storage seat is limited again, thereby preventing the frozen products from tipping over due to imbalance during rotation. This completes the balance adjustment process during the transport of frozen products. Then, the rapid transfer mechanism is activated. After the frozen products on the magnetic levitation tray have been adjusted by the balance adjustment mechanism, the frozen products on the magnetic levitation tray can maintain a balanced state during transport. Then, the frozen products at the top of the split-type storage seat on the magnetic levitation tray are repelled by the permanent magnet at the bottom of the magnetic levitation tray. The magnetic levitation pallet is suspended by the action of a magnetic sensor, thus avoiding mechanical friction during transport. Simultaneously, pressure sensors on the magnetic levitation pallet adjust the current supplied to the linear motor on the superconducting magnetic track based on the weight of the goods. This alternating magnetic field between the stator coil on the superconducting magnetic track and the mover coil at the bottom of the magnetic levitation pallet drives the track moving seat within the superconducting magnetic track to move linearly. After it reaches the designated location in the cold storage, the linear motor slowly provides power, and the track moving seat stops moving. Workers then move the frozen products on it to the corresponding location in the cold storage for storage, thus completing the rapid transfer of frozen products.

[0017] This invention provides a closed-type rapid unloading device for cold storage. It offers the following advantages: 1. By adding and setting a flexible docking mechanism, this invention effectively achieves a sealed fit between the cold storage and the refrigerated truck before frozen products are placed in the storage. On one hand, a micro-air pump supplies air to the honeycomb inflation unit inside the folding docking compartment, causing the compartment to unfold and push the flexible fitting seat to fit the refrigerated compartment of the truck. Combined with the adsorption and fixation of the strip magnetic seat and the deformation filling of the flexible fitting seat, the docking gaps are tightly sealed, preventing cold leakage. On the other hand, the aluminum foil reflective layer inside the folding docking compartment and the polyurethane insulation layer on the outside work together to maintain the cold environment inside the compartment. Simultaneously, the limiting buckle enhances docking stability, adapting to trucks with different parking positions and vehicle types, reducing temperature fluctuations caused by improper docking, providing a stable transition environment for cargo transfer, and ensuring that the quality of deep-cold goods such as tuna is not affected by the docking process.

[0018] 2. By adding and setting a compensation and adjustment mechanism, this invention can accurately respond to the instantaneous temperature difference impact when the truck docks with the cold storage before the frozen products are put into storage. Not only does it monitor the temperature inside the connected compartment in real time through a resistive temperature sensor, but when the truck door is opened and the temperature rises, the PID controller can quickly trigger the electromagnetic control valve, so that the liquid nitrogen in the high-pressure storage tank is precisely injected through a micro-jet nozzle, which quickly pulls the temperature inside the compartment back to the target range, avoiding myoglobin oxidation or deterioration of taste due to short-term temperature changes. Moreover, after the temperature recovers, the ultra-low temperature compressor and alloy evaporator can continuously maintain the temperature stability inside the connected compartment, preventing temperature fluctuations during subsequent cargo transfer. It provides dual protection from the aspects of emergency compensation and continuous heat preservation, solving the problem of temperature runaway during the transfer of cryogenic goods.

[0019] 3. By adding and setting a balance adjustment mechanism, this invention can effectively prevent goods from tipping over due to imbalance during the storage of frozen products. First, when the goods on the split-type storage seat tilt due to uneven weight, the ball head seat allows the storage seat to rotate adaptively. At the same time, the traction spring on the tilted side stretches to generate a reverse pull force, assisting the storage seat to return to its original position and preventing the tilt from worsening. Second, when the storage seat tilts, the connecting rope pulls the piston seat to move, causing the rotating rod to rotate and tighten the torsion spring, further applying a reverse constraint. Moreover, the sealed cavity can limit the piston seat movement through air pressure, precisely limiting the tilt angle of the storage seat. This ensures the balance and stability of the goods during transportation and avoids physical damage to fragile goods such as tuna due to equipment jamming or collisions, thus improving transportation safety.

[0020] 4. By adding and setting a rapid transfer mechanism, this invention enables frictionless, efficient, and precise transport of frozen products during warehousing. On one hand, the permanent magnet at the bottom of the magnetic levitation pallet and the superconducting magnetic track form a repulsive force, causing the pallet to levitate above the track, completely eliminating mechanical friction and reducing malfunctions caused by component lubrication failure or low-temperature embrittlement in cryogenic environments, thus extending the service life of the equipment. On the other hand, the pressure sensor can adjust the linear motor current according to the weight of the goods, and the alternating magnetic field generated by the stator coil seat and the mover coil seat drives the track moving seat to run smoothly, ensuring accurate pallet start-stop positioning and avoiding misalignment during goods transfer. This not only improves transport efficiency but also prevents damage to goods due to shaking or collision during transfer, ensuring the quality stability of cryogenic goods throughout the entire transfer process. Attached Figure Description

[0021] Figure 1 is a front view of the structure of the present invention; Figure 2 is a schematic diagram of the front side view structure of the present invention; Figure 3 is a cross-sectional schematic diagram of the internal structure of the flexible bonding seat of the present invention; Figure 4 is a schematic diagram of the honeycomb air-filled unit structure of the present invention; Figure 5 is a schematic diagram of the internal structure of the folding docking compartment of the present invention; Figure 6 is a partial structural schematic diagram of the magnetic levitation tray of the present invention; Figure 7 is a schematic diagram of the bottom structure of the split-type storage seat of the present invention; Figure 8 is a cross-sectional schematic diagram of the internal structure of the magnetic levitation tray of the present invention; Figure 9 is a cross-sectional schematic diagram of the internal structure of the piston seat of the present invention; Figure 10 is a schematic diagram of a partial structure of the superconducting magnetic track of the present invention.

[0022] The components include: 1. Base plate; 2. Connecting compartment; 3. Cryogenic compressor; 4. Alloy evaporator; 5. High-pressure storage tank; 6. Electromagnetic control valve; 7. Dispersion seat; 8. Limiting buckle seat; 9. Flexible fitting seat; 10. Split-type storage seat; 11. Magnetic levitation tray; 12. Linear motor; 13. Stator coil seat; 14. Folding docking compartment; 15. Miniature air pump; 16. PID controller. Controller; 17. Resistance temperature sensor; 18. Micro-injection nozzle; 19. Folding limit plate; 20. Pressure sensor; 21. Mover coil seat; 22. Ball head seat; 23. Permanent magnet; 24. Separating slide plate; 25. Strip magnetic seat; 26. Honeycomb inflation unit; 27. Aluminum foil reflective layer; 28. Polyurethane insulation layer; 29. ​​Traction spring; 30. Piston seat; 31. Sealing cavity; 32. Connecting rope; 33. Moving cavity; 34. Torsion spring; 35. Rotating rod; 36. Edge limit seat; 37. Superconducting magnetic track; 38. Track moving seat. Detailed Implementation

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please refer to Figures 1 and 2. This embodiment of the invention provides a closed cold storage rapid unloading device, including a base plate 1. The top of the base plate 1 is provided with a connecting compartment 2 that connects to the cold storage inlet and the unloading outlet. Please refer to Figures 2 and 3. A flexible docking mechanism is provided on the side of the connecting compartment 2 near the unloading outlet, used to dock and seal the connecting compartment 2 with the cargo box of the refrigerated truck during unloading. The flexible docking mechanism includes a dispersing seat 7. The dispersing seat 7 is provided on the side of the connecting compartment 2 away from the cold storage inlet. A folding docking compartment 14 is provided in the middle of one side of the dispersing seat 7. Multiple interconnected honeycomb inflation units 26 are equidistantly arranged in the middle of the inner side of the folding docking compartment 14. The interior of the folding docking compartment 14 is connected to the interior of the dispersing seat 7. Multiple micro air pumps 15 are equidistantly arranged on both sides of the outer wall of the connecting compartment 2. The exhaust ports of the micro air pumps 15 are all connected to the interior of the dispersing seat 7.

[0025] When the flexible docking mechanism is activated, the staff starts the micro air pump 15 on the connecting compartment 2 according to the location of the refrigerated truck. After activation, the micro air pump 15 injects gas into the dispersing seat 7 on the connecting compartment 2. At this time, the gas entering the dispersing seat 7 is evenly distributed into the honeycomb inflation unit 26 in each position of the folding docking compartment 14 after being divided by it. As the gas content in each honeycomb inflation unit 26 increases, the folding docking compartment 14 unfolds from its original contracted state. At the same time as unfolding, the folding docking compartment 14 simultaneously pushes the flexible bonding seat 9 on the base plate 1 to slide synchronously towards the refrigerated compartment of the truck and move closer to the location of the refrigerated compartment of the truck.

[0026] The flexible docking mechanism also includes a flexible fitting seat 9. The flexible fitting seat 9 is slidably connected to the upper part of the base plate 1. The middle part of one side of the flexible fitting seat 9 is connected to one side of the folding docking compartment 14. Multiple partition slides 24 are equidistantly arranged inside the flexible fitting seat 9. A strip magnetic seat 25 is slidably connected between adjacent partition slides 24.

[0027] When the flexible fitting seat 9 is moved to the position of the refrigerated truck compartment, the staff manually adjusts the position of the strip magnetic seat 25 on the inner partition slide 24 of the flexible fitting seat 9 so that the adjusted strip magnetic seat 25 corresponds to the edge contour of the refrigerated truck compartment. Then, the strip magnetic seat 25 is magnetically attracted and fixed to the edge of the refrigerated truck compartment. While the strip magnetic seat 25 is attracting, it squeezes the flexible fitting seat 9 between the refrigerated truck compartment and the flexible fitting seat 9, causing it to deform, thereby filling and sealing the connection between the folding docking compartment 14 and the refrigerated truck compartment.

[0028] The flexible docking mechanism also includes limit fasteners 8. Multiple limit fasteners 8 are equidistantly rotatably connected on one side of the dispersed seat 7. An aluminum foil reflective layer 27 is provided on the inner side of the folding docking chamber 14, and a polyurethane insulation layer 28 is provided on the outer side of the folding docking chamber 14.

[0029] After completing the docking and sealing with the truck compartment, the staff adjusts the interior of the connecting compartment 2 to a suitable temperature. After the temperature adjustment is completed, the temperature inside the connecting compartment 2 is maintained by the cooperation of the aluminum foil reflective layer 27 and the polyurethane insulation layer 28 on the folded docking compartment 14, thereby ensuring the suitability of refrigerated goods when they enter, thus completing the flexible docking and sealing treatment between the cold storage and the refrigerated truck compartment.

[0030] Please refer to Figures 4 and 5. The compensation and adjustment mechanism is installed on the connecting compartment 2 and is used to compensate for the instantaneous temperature difference impact generated inside the connecting compartment 2 when the refrigerated truck cargo box is opened. The compensation and adjustment mechanism also includes a micro-injection nozzle 18. The micro-injection nozzle 18 is installed on the inner wall of the connecting compartment 2 near the dispersion seat 7. A high-pressure storage tank 5 is installed at the top center of the connecting compartment 2. The high-pressure storage tank 5 is filled with liquid nitrogen. The discharge end of the high-pressure storage tank 5 is connected to the liquid inlet of the micro-injection nozzle 18 through a connecting pipe. An electromagnetic control valve 6 is installed on the connecting pipe.

[0031] When the compensation and adjustment mechanism is activated, the staff opens the refrigerated compartment. Due to the temperature change between the compartment and the connecting compartment 2, the temperature inside the compartment will cause a momentary temperature difference shock to the inside of the connecting compartment 2. At this time, the resistance temperature sensor 17 inside the connecting compartment 2 monitors the temperature change inside in real time. If the temperature rises momentarily due to the opening of the truck door, the PID controller 16 on the connecting compartment 2 controls the electromagnetic control valve 6 to start. The liquid nitrogen in the high-pressure storage tank 5 enters the micro-injection outlet 18 inside the connecting compartment 2 through the connecting pipe, and is micro-injected through the micro-injection outlet 18, thereby pulling the cooling of the connecting compartment 2 back to the target range in a short time.

[0032] The compensation and adjustment mechanism includes a resistance temperature sensor 17. Multiple resistance temperature sensors 17 are equidistantly arranged on the inner top of the connecting chamber 2. A PID controller 16 is arranged on one side of the outer wall of the connecting chamber 2. An ultra-low temperature compressor 3 and an alloy evaporator 4 are respectively arranged on one side of the middle part of the top of the connecting chamber 2.

[0033] Once the temperature inside the connecting compartment 2 reaches the set standard, the PID controller 16 controls the solenoid control valve 6 on the connecting compartment 2 to reset. Then, the cryogenic compressor 3 and alloy evaporator 4 on the connecting compartment 2 are started to maintain the temperature inside the connecting compartment 2, thereby avoiding temperature fluctuations during subsequent cargo transfer and completing the temperature compensation and regulation process during cargo transfer.

[0034] Please refer to Figures 6-9. The balance adjustment mechanism is located on the upper part of the base plate 1 and is used to adjust the balance during the conveying process. The balance adjustment mechanism includes split-type storage seats 10. Multiple split-type storage seats 10 are provided on the top of the magnetic levitation tray 11. The bottom center of each split-type storage seat 10 is connected to the corresponding position on the top of the magnetic levitation tray 11 through a ball joint 22. A folding limiting plate 19 is rotatably connected to one side of the top of each split-type storage seat 10. A pressure sensor 20 is provided at the front center of the magnetic levitation tray 11.

[0035] When the balance adjustment mechanism is activated, after adjusting the temperature in the connecting compartment 2 to the set range, the staff transfers the frozen products in the refrigerated compartment of the truck to the split-type storage seat 10. At the same time, the frozen products are limited by the folding limiting plate 19 on it. Then, as the frozen products on the split-type storage seat 10 continue to increase, when the frozen products on it tilt outward due to the different weights at various positions, the frozen products on the split-type storage seat 10 press down on the outer corner of the split-type storage seat 10, thereby causing the split-type storage seat 10 to tilt and rotate under the action of the ball head seat 22 on the magnetic levitation tray 11.

[0036] When the split shelf 10 tilts and rotates, the traction spring 29 on the opposite side of the bottom of the split shelf 10 changes from a contracted state to a stretched state due to its tilt. At the same time, during the stretching process of the traction spring 29, it also assists the tilted split shelf 10 on the magnetic levitation tray 11 to return to its original position.

[0037] The balance adjustment mechanism also includes traction springs 29. Four traction springs 29 are equidistantly arranged at the top center of the magnetic levitation tray 11. The other end of the traction springs 29 is connected to the bottom corner of the corresponding split-type storage seat 10. The magnetic levitation tray 11 has multiple moving cavities 33 arranged in a circular array inside. A piston seat 30 is slidably connected inside the moving cavity 33. The piston seat 30 and the other part of the moving cavity 33 form a sealed cavity 31. A rotating rod 35 is rotatably connected to the inner center of the piston seat 30. Edge limiting seats 36 are provided on both ends of the rotating rod 35. Torsion springs 34 are provided on both sides of the middle part of the rotating rod 35. One end of the rotating rod 35 is connected to the connecting rope 32. The other end of the connecting rope 32 passes through the magnetic levitation tray 11 and is connected to the corner of the corresponding split-type storage seat 10.

[0038] Furthermore, as the split-type storage seat 10 tilts and rotates, the corresponding positions at the diagonal corners inside the split-type storage seat 10 will also move upward synchronously. During the upward movement, the split-type storage seat 10 pulls the piston seat 30 inside the sealed cavity 31 to move via the connecting rope 32. During the movement, the connecting rope 32 pulls the rotating rod 35 inside the piston seat 30 to rotate synchronously. During the rotation of the rotating rod 35, the torsion spring 34 on it will also tighten synchronously, applying a reverse pulling force to the corresponding position at the bottom of the split-type storage seat 10.

[0039] Meanwhile, after the rotating rod 35 rotates to the limit position, the connecting rope 32 pulls the piston seat 30 in the moving cavity 33 to move. Under the action of the sealing cavity 31 in the moving cavity 33, the tilt angle of the split-type storage seat 10 is limited again, thereby preventing the frozen products from tipping over due to imbalance during rotation, thus completing the balance adjustment process of the frozen products during transportation.

[0040] Please refer to Figures 2 and 10. The rapid transfer mechanism, which is mounted on the base plate 1, is used for frictionless conveying and transfer of frozen products.

[0041] The rapid transfer mechanism includes superconducting magnetic rails 37. Superconducting magnetic rails 37 are provided on both sides of the top center of the base plate 1. A magnetic levitation tray 11 is provided on the upper part of the base plate 1. Track moving seats 38 are provided inside the superconducting magnetic rails 37. The four corners of the bottom end of the magnetic levitation tray 11 are connected to the top of the corresponding track moving seats 38. A linear motor 12 for controlling the movement of the track moving seats 38 is provided at the center of one end of the superconducting magnetic rails 37.

[0042] When the rapid transfer mechanism is activated, the frozen products on the magnetic levitation tray 11 are adjusted by the balance adjustment mechanism, so that the frozen products on the magnetic levitation tray 11 can maintain a balanced state during the transportation process. Then, the frozen products on the top of the split-type storage seat 10 on the magnetic levitation tray 11 are suspended under the repulsive force of the permanent magnet 23 at the bottom of the magnetic levitation tray 11, thereby avoiding the generation of mechanical friction during the transportation process.

[0043] The rapid transfer mechanism also includes a stator coil holder 13. Stator coil holders 13 are provided in the middle of both sides of the superconducting magnetic rail 37. Multiple permanent magnets 23 are provided at equal intervals on both sides of the bottom edge of the magnetic levitation tray 11. A mover coil holder 21 is provided in the middle of the bottom end of the magnetic levitation tray 11.

[0044] Simultaneously, the pressure sensor 20 on the magnetic levitation pallet 11 adjusts the current supplied to the linear motor 12 on the superconducting magnetic track 37 based on the weight data of the goods. This causes the alternating magnetic field generated between the stator coil seat 13 on the superconducting magnetic track 37 and the mover coil seat 21 at the bottom of the magnetic levitation pallet 11 to drive the track moving seat 38 inside the superconducting magnetic track 37 to move linearly. After it moves to the designated position in the cold storage, the linear motor 12 slowly provides power, and the track moving seat 38 inside the superconducting magnetic track 37 stops and moves. The staff then moves the frozen products on it to the corresponding position in the cold storage for storage, thus completing the rapid transfer of frozen products.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rapid unloading device for enclosed cold storage, characterized in that, include, The bottom plate (1) has a connecting compartment (2) at the top that connects to the cold storage entrance and the unloading exit. A flexible docking mechanism is set on the side of the connecting compartment (2) near the unloading port, and is used to dock and seal the connecting compartment (2) with the refrigerated truck cargo box during unloading. The compensation and adjustment mechanism is set on the connecting compartment (2) and is used to compensate for the instantaneous temperature difference impact generated in the connecting compartment (2) when the cargo box of the refrigerated truck is opened. The balance adjustment mechanism is located on the upper part of the base plate (1) and is used to adjust the balance during the conveying process. A rapid transfer mechanism is set on the base plate (1) and is used for frictionless transport and transfer of frozen products.

2. The closed-type cold storage rapid unloading device according to claim 1, characterized in that, The flexible docking mechanism includes a dispersing seat (7). The dispersing seat (7) is provided on the side of the connecting chamber (2) away from the cold storage entrance. The middle of one side of the dispersing seat (7) is provided in the folding docking chamber (14). Multiple interconnected honeycomb inflation units (26) are equidistantly arranged in the middle of the inner side of the folding docking chamber (14). The interior of the folding docking chamber (14) is connected to the interior of the dispersing seat (7). Multiple micro air pumps (15) are equidistantly arranged on both sides of the outer wall of the connecting chamber (2). The exhaust ports of the micro air pumps (15) are all connected to the interior of the dispersing seat (7).

3. The closed-type cold storage rapid unloading device according to claim 2, characterized in that, The flexible docking mechanism also includes a limiting buckle (8). Multiple limiting buckles (8) are equidistantly rotatably connected on one side of the dispersed seat (7). An aluminum foil reflective layer (27) is provided on the inner side of the folding docking compartment (14), and a polyurethane insulation layer (28) is provided on the outer side of the folding docking compartment (14).

4. The closed-type cold storage rapid unloading device according to claim 3, characterized in that, The flexible docking mechanism also includes a flexible fitting seat (9). The upper part of the base plate (1) is slidably connected to the flexible fitting seat (9). The middle part of one side of the flexible fitting seat (9) is connected to one side of the folding docking compartment (14). Multiple partition slides (24) are equidistantly arranged inside the flexible fitting seat (9). A strip magnetic suction seat (25) is slidably connected between adjacent partition slides (24).

5. The closed-type cold storage rapid unloading device according to claim 1, characterized in that, The compensation and adjustment mechanism includes a resistance temperature sensor (17). Multiple resistance temperature sensors (17) are equidistantly arranged on the inner top of the connecting chamber (2). A PID controller (16) is arranged on one side of the outer wall of the connecting chamber (2). An ultra-low temperature compressor (3) and an alloy evaporator (4) are respectively arranged on one side of the middle part of the top of the connecting chamber (2).

6. The closed-type cold storage rapid unloading device according to claim 4, characterized in that, The compensation and adjustment mechanism also includes a micro-injection row (18). The micro-injection row (18) is provided on the inner wall of the connecting chamber (2) near the dispersing seat (7). A high-pressure storage tank (5) is provided at the top center of the connecting chamber (2). The high-pressure storage tank (5) is filled with liquid nitrogen. The discharge end of the high-pressure storage tank (5) is connected to the liquid inlet of the micro-injection row (18) through a connecting pipe. An electromagnetic control valve (6) is provided on the connecting pipe.

7. The closed-type cold storage rapid unloading device according to claim 1, characterized in that, The rapid transfer mechanism includes a superconducting magnetic rail (37). Superconducting magnetic rails (37) are provided on both sides of the top center of the base plate (1). A magnetic levitation tray (11) is provided on the upper part of the base plate (1). A track moving seat (38) is provided inside the superconducting magnetic rail (37). The four corners of the bottom end of the magnetic levitation tray (11) are respectively connected to the top of the corresponding track moving seat (38). A linear motor (12) for controlling the movement of the track moving seat (38) is provided at the center of one end of the superconducting magnetic rail (37).

8. A closed-type cold storage rapid unloading device according to claim 7, characterized in that, The rapid transfer mechanism also includes a stator coil seat (13), and stator coil seats (13) are provided in the middle of both sides of the superconducting magnetic rail (37). Multiple permanent magnets (23) are provided at equal intervals on both sides of the bottom edge of the magnetic levitation tray (11), and a moving coil seat (21) is provided in the middle of the bottom end of the magnetic levitation tray (11).

9. A closed-type cold storage rapid unloading device according to claim 7, characterized in that, The balance adjustment mechanism includes a split-type storage seat (10). The top of the magnetic levitation tray (11) is provided with multiple split-type storage seats (10). The bottom center of each split-type storage seat (10) is connected to the corresponding position at the top of the magnetic levitation tray (11) through a ball head seat (22). A folding limiting plate (19) is rotatably connected to one side of the top of each split-type storage seat (10). A pressure sensor (20) is provided at the front center of the magnetic levitation tray (11).

10. A closed-type cold storage rapid unloading device according to claim 9, characterized in that, The balance adjustment mechanism also includes traction springs (29). Four traction springs (29) are equidistantly arranged at the top center of the magnetic levitation tray (11). The other end of the traction springs (29) is connected to the bottom corner of the corresponding split-type storage seat (10). The magnetic levitation tray (11) has multiple moving cavities (33) arranged in a circular array inside. A piston seat (30) is slidably connected inside the moving cavity (33). The piston seat (30) and the other part of the moving cavity (33) form a sealed cavity (31). A rotating rod (35) is rotatably connected to the inner center of the piston seat (30). An edge limiting seat (36) is provided on both ends of the rotating rod (35). A torsion spring (34) is provided on both sides of the middle part of the rotating rod (35). One end of the rotating rod (35) is connected to a connecting rope (32). The other end of the connecting rope (32) passes through the magnetic levitation tray (11) and is connected to the corner of the corresponding split-type storage seat (10).

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