A general refrigeration house and real-time inventory system based on ultra-high frequency RFID technology

Abstract

The application relates to the technical field of cold storage, and particularly discloses a common cold storage based on super-high-frequency RFID technology and a real-time inventory system, which comprises a cold storage body, a door hole is formed in one end of the cold storage body, a protective frame is installed on the inner wall of the cold storage body close to the one end of the door hole, a protective plate is installed on the outer wall of the protective frame away from the cold storage body, grooves are formed in the length direction on the inner walls of the two sides of the protective frame, first radio frequency antennas are installed on the inner walls of the grooves and the inner top of the protective frame, a rotating frame is rotatably installed on the bottom end of the side of the protective frame away from the inner wall of the cold storage body, limiting grooves are formed in the length direction on the inner walls of the two sides of the rotating frame close to the protective frame, the top end of the limiting groove penetrates through the rotating frame, and a lifting plate is slidably installed in the rotating frame. When the application is used, workers do not need to manually or through a trolley to carry the materials to be stored into the interior of the cold storage body, so that the material storage efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of cold storage technology, and in particular to a general cold storage and real-time inventory system based on ultra-high frequency RFID technology. Background Technology

[0002] UHF RFID is a wireless communication technology that enables automatic object identification and data transmission. It uses radio frequency signals to communicate, transmitting information from tags to readers, thus enabling object tracking and management. UHF RFID technology allows for contactless data reading and writing, improving work efficiency and convenience. Furthermore, it can read multiple tags simultaneously, significantly increasing data processing speed. Common cold storage facilities require regular inventory checks to confirm the quantity, location, classification, layering, and zoning of materials.

[0003] In common cold storage facilities, when using UHF RFID technology to identify and record incoming materials, the radio frequency antenna for UHF RFID is installed at the entrance of the cold storage. When staff manually move or push carts to transport materials into the cold storage, the radio frequency antenna automatically identifies the electronic tags on the materials. However, manual material handling is inefficient, and pushing carts can bring dust and dirt into the cold storage, resulting in a large amount of dust inside, which is detrimental to the storage of materials. Furthermore, the fast movement of carts when moving materials into the cold storage makes it difficult for the radio frequency antenna to identify the electronic tags on the materials. In addition, commonly used cold storage facilities cannot automatically move incoming materials during operation. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a general cold storage and real-time inventory system based on ultra-high frequency RFID technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A common cold storage and real-time inventory system based on ultra-high frequency RFID technology includes a cold storage body, one end of which has a door opening, a protective frame installed on the inner wall of the cold storage body near the door opening, a protective plate installed on the outer wall of the protective frame away from the cold storage body, and grooves opened along the length direction on both inner walls of the protective frame, and a first radio frequency antenna installed on the inner wall of the groove and the inner top of the protective frame.

[0007] A rotating frame is rotatably installed at the bottom end of the protective frame on the side away from the inner wall of the cold storage body. Limiting grooves are formed along the length direction on the inner walls of both sides of the rotating frame near the protective frame. The top of the limiting grooves penetrates the rotating frame. A lifting plate is slidably installed inside the rotating frame. The two sides of the lifting plate are slidably installed inside the two limiting grooves respectively. The top of the lifting plate penetrates the limiting grooves. Limiting blocks are installed near the corners on the top of the lifting plate on the side away from the protective frame. Guide rails matching the limiting blocks are installed along the length direction on both sides of the inner bottom of the cold storage body. Electric sliders are slidably installed at both ends of the guide rails.

[0008] Preferably, the lifting plate has a storage cavity inside, a discharge hole is opened at the bottom of the storage cavity, and a feed hole is opened at the top of the inner walls on both sides of the storage cavity. The feed hole and the discharge hole both penetrate the lifting plate. Fixing plates are installed on both sides of the top of the lifting plate. The fixing plates are located above the feed holes, and the bottom of the fixing plates abuts against the top of the rotating frame.

[0009] Preferably, the fixing plate has a fixing groove on the side near the protective frame, a motor is installed on the inner wall of the fixing groove, the output shaft of the motor passes through the fixing plate, and several mounting plates are installed thereon. Several brushes are installed on the side of the mounting plates away from the protective frame.

[0010] Preferably, the inner bottom of the cold storage body is provided with an installation groove at one end near the door opening. The installation groove is located inside the protective frame. A discharge hole is provided on the inner wall of the installation groove at one end near the door opening. The discharge hole penetrates the cold storage body. A guide slope is provided at the corner of the inner bottom of the installation groove near the protective plate. The installation groove is located on the bottom side of the lifting plate.

[0011] Preferably, a conveyor belt is installed inside the mounting groove, and rotating rollers are installed at both ends of the conveyor belt. The outer wall of the rotating rollers abuts against the inner wall of the conveyor belt. The two ends of the rotating rollers are respectively rotatably mounted on the inner walls of the two ends of the mounting groove. A protective groove is opened on the inner wall of one end of the mounting groove, and a motor is installed on the inner wall of the protective groove. The output shaft of the motor is connected to one end of one of the rotating rollers through a coupling.

[0012] Preferably, the protective plate has fixing holes at both ends of its side, and the two fixing holes are located on both sides of the rotating frame. An electric telescopic rod is rotatably installed on both sides of the protective frame. The end of the electric telescopic rod away from the side of the protective frame passes through the fixing hole and is rotatably installed on the side of the rotating frame.

[0013] Preferably, a plurality of air outlets are installed on the inner walls of both sides of the protective frame, and the plurality of air outlets are located on both sides of the groove. A blower is installed on both sides of the protective frame, and the air outlet pipe of the blower is connected to the air outlet.

[0014] Preferably, a top plate is installed on the inner top of the cold storage body along its length, and several second radio frequency antennas are installed obliquely on both sides of the top plate. Several lighting lamps and fire sprinklers are installed at the bottom of the top plate, with the fire sprinklers located between two adjacent lighting lamps. A reader is installed on the top of the protective frame, and the first and second radio frequency antennas are electrically connected to the reader.

[0015] Preferably, shelves are installed on both sides of the inner bottom of the cold storage body, with the two shelves located below the top plate on both sides, and the shelves are located between the guide rail and the inner wall of the cold storage body.

[0016] An inventory method for a conventional cold storage facility based on ultra-high frequency RFID technology, as disclosed in this invention, includes the following steps:

[0017] Step 1: When in use, the staff places the materials to be stored on the top of the conveyor belt. Several air outlets on the inner walls of both sides of the protective frame blow air to clean the surface of the materials. At the same time, the first radio frequency antennas on the inner walls and top of the protective frame collect and record the information of the materials through the electronic tags on the surface of the materials. Several second radio frequency antennas on the side of the top plate can record the quantity and position of the materials on the shelves inside the cold storage body.

[0018] Step 2: After the material on the conveyor belt is placed, the electric telescopic rod pushes the rotating frame and the lifting plate to rotate, so that the limit block on the lifting plate rotates between the two electric sliders inside the guide rail, and the conveyor belt drives the material on it to the top of the lifting plate.

[0019] Step 3: The electric slider moves the lifting plate and the materials on it away from the door opening by pushing the limit block. At the same time, the lifting plate moves out of the limit slot on the rotating frame until the lifting plate and the materials on it move to the designated position on the side of the shelf according to the electronic tag information on the materials. The staff then place the materials on the lifting plate on the shelf.

[0020] Step 4: When the lifting plate moves, several brushes located on the sides of the fixed plates on both sides of the lifting plate rotate around the output shaft of the motor. When the brushes rotate, they clean the impurities and dust at the bottom of the cold storage body. When the brushes rotate, they drive the impurities and dust through the feed hole to the storage cavity for storage.

[0021] Step 5: After the staff has finished storing the materials on the lifting plate, the electric slider pushes the lifting plate to move back into the limit slot. The electric telescopic rod drives the rotating frame and the lifting plate to the side of the protective frame. When the lifting plate rotates, the impurities and dust inside the storage cavity slide down into the installation slot through the discharge hole. The impurities and dust inside the installation slot are then discharged to the outside through the discharge hole by the rotation of the conveyor belt.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. In this invention, the lifting platform can rotate according to usage. Workers can use a conveyor belt to transport materials to be stored to the top of the lifting platform. When in use, the electric slider can move the materials to the side of the designated shelf according to the information recorded by the electronic tag on the materials by the first radio frequency antenna. This allows workers to directly place the materials to be stored on the designated shelf, reducing the time workers spend searching for the shelf where the materials are placed and improving the efficiency of material storage. When in use, workers do not need to manually or by trolley carry the materials to be stored into the cold storage body, making it more convenient to use and reducing the manpower required for material storage. At the same time, it can also prevent dirt and dust on the surface and wheels of the trolley from entering the interior of the cold storage body when workers carry materials by trolley.

[0024] 2. In this invention, when the cold storage body stores materials, the lifting plate and rotating frame abut against the side of the protective frame. The lifting plate seals and protects the protective frame, preventing air inside the cold storage body from dissipating to the outside through the protective frame and door openings during material storage. It also prevents dust and hot air from entering the interior of the cold storage body during use. When the lifting plate moves and transports materials inside the cold storage body, the brushes on both sides of the lifting plate can clean the dust and impurities at the bottom of the cold storage body, storing them inside the storage cavity. When the lifting plate seals the protective frame again and rotates, the dust and impurities collected in the storage cavity can slide down through the discharge hole into the installation slot. During use, it can automatically clean the dust and impurities inside the storage cavity.

[0025] 3. In this invention, the conveyor belt can place materials to be stored for a short time during use, facilitating the recording of material information by the first radio frequency antenna. Simultaneously, the conveyor belt can transport the materials on it while rotating, moving them onto the lifting plate. The lifting plate then moves the materials to a designated position on the side of the shelf. When the dust and impurities collected in the storage cavity are poured into the installation slot, the bottom of the conveyor belt can discharge the dust and impurities at the bottom of the installation slot to the outside while rotating. During use, the conveyor belt transports materials and discharges impurities simultaneously, automatically cleaning the collected dust and impurities while transporting and storing materials.

[0026] 4. In this invention, when workers place the materials to be stored on the top of the conveyor belt in sequence, several air outlets can clean the dust on the surface of the materials. After the dust on the surface of the materials is cleaned, it can be blown to the outside through the door holes. During use, the surface of the materials entering the cold storage can be cleaned in real time to prevent external dust from entering the cold storage body along with the materials. When workers need to enter the cold storage body, the air outlets can also clean the dust off the workers. During use, it can reduce the amount of external dust entering the cold storage body and prevent the materials from deteriorating or becoming unhygienic due to excessive dust when stored inside the cold storage body. Attached Figure Description

[0027] Figure 1 This is a three-dimensional view of a conventional cold storage and real-time inventory system based on ultra-high frequency RFID technology proposed in this invention.

[0028] Figure 2 This is a cross-sectional view of a cold storage unit based on ultra-high frequency RFID technology and a real-time inventory system, as proposed in this invention.

[0029] Figure 3 This is a schematic diagram of the protective frame installation structure of a general cold storage and real-time inventory system based on ultra-high frequency RFID technology proposed in this invention.

[0030] Figure 4 This is a schematic diagram of the rotating frame installation structure of a conventional cold storage and real-time inventory system based on ultra-high frequency RFID technology proposed in this invention.

[0031] Figure 5 This is a schematic diagram of the lifting platform installation structure of a conventional cold storage and real-time inventory system based on ultra-high frequency RFID technology proposed in this invention.

[0032] Figure 6 This is a schematic diagram of the rotating frame structure of a conventional cold storage and real-time inventory system based on ultra-high frequency RFID technology proposed in this invention.

[0033] Figure 7 This is a schematic diagram of the fixed plate installation structure of a general cold storage and real-time inventory system based on ultra-high frequency RFID technology proposed in this invention.

[0034] Figure 8 This is a cross-sectional view of a lifting platform for a conventional cold storage and real-time inventory system based on ultra-high frequency RFID technology proposed in this invention.

[0035] Figure 9 This is a schematic diagram of the conveyor belt installation structure of a general cold storage and real-time inventory system based on ultra-high frequency RFID technology proposed in this invention.

[0036] Figure 10 This is a schematic diagram of the rotating roller installation structure of a conventional cold storage and real-time inventory system based on ultra-high frequency RFID technology proposed in this invention.

[0037] Figure 11 This is a schematic diagram of the top plate structure of a conventional cold storage and real-time inventory system based on ultra-high frequency RFID technology proposed in this invention.

[0038] Figure 12 This is a schematic diagram of the guide roller structure of a conventional cold storage and real-time inventory system based on ultra-high frequency RFID technology proposed in this invention.

[0039] In the diagram: 1. Cold storage body; 2. Door opening; 3. Protective frame; 4. Discharge hole; 5. Mounting groove; 6. Shelf; 7. Guide rail; 8. Top plate; 9. Protective plate; 10. Discharge hole; 11. Blower; 12. Reader / writer; 13. First radio frequency antenna; 14. Groove; 15. Air outlet; 16. Electric telescopic rod; 17. Fixing hole; 18. Lifting plate; 19. Rotating frame; 20. Limiting block; 21. Fixing plate; 22. Mounting plate; 23. Brush; 24. Fixing groove; 25. Limiting groove; 26. Storage cavity; 27. Feed hole; 28. Conveyor belt; 29. ​​Rotating roller; 30. Motor; 31. Second radio frequency antenna; 32. Lighting lamp; 33. Fire sprinkler head; 34. Electric slider; 35. Motor. Detailed Implementation

[0040] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0041] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0042] Reference Figure 1-12 A common cold storage and real-time inventory system based on ultra-high frequency RFID technology includes a cold storage body 1, a door opening 2 at one end of the cold storage body 1, a protective frame 3 installed on the inner wall of the cold storage body 1 near the door opening 2, a protective plate 9 installed on the outer wall of the protective frame 3 away from the cold storage body 1, and grooves 14 are provided on both inner walls of the protective frame 3 along the length direction. A first radio frequency antenna 13 is installed on the inner wall of the groove 14 and the inner top of the protective frame 3.

[0043] A rotating frame 19 is rotatably installed on the bottom side of the protective frame 3 away from the inner wall of the cold storage body 1. Limiting grooves 25 are opened along the length direction on the inner walls of both sides of the rotating frame 19 near the protective frame 3. The top of the limiting grooves 25 passes through the rotating frame 19. A lifting plate 18 is slidably installed inside the rotating frame 19. The two sides of the lifting plate 18 are slidably installed inside the two limiting grooves 25 respectively. The top of the lifting plate 18 passes through the limiting grooves 25. Limiting blocks 20 are installed near the corners on the top of the lifting plate 18 away from the protective frame 3. Guide rails 7 matching the limiting blocks 20 are installed along the length direction on both sides of the inner bottom of the cold storage body 1. Electric sliders 34 are slidably installed at both ends of the guide rails 7.

[0044] As a technical optimization of the present invention, the lifting plate 18 is provided with a storage cavity 26 inside, and a discharge hole 10 is provided at the bottom of the storage cavity 26. A feed hole 27 is provided at the top of the inner walls on both sides of the storage cavity 26. The feed hole 27 and the discharge hole 10 both penetrate the lifting plate 18. Fixing plates 21 are installed on both sides of the top of the lifting plate 18. The fixing plates 21 are located above the feed holes 27, and the bottom of the fixing plates 21 abuts against the top of the rotating frame 19. When in use, the storage cavity 26 can store dust and impurities on the bottom floor of the cold storage body 1, which is convenient for staff to clean the dust and impurities.

[0045] As a technical optimization of the present invention, a fixing groove 24 is provided on the side of the fixing plate 21 near the protective frame 3. A motor 35 is installed on the inner wall of the fixing groove 24. The output shaft of the motor 35 passes through the fixing plate 21 and is equipped with several mounting plates 22. Several brushes 23 are installed on the side of the mounting plates 22 away from the protective frame 3. The output shaft of the motor 35 can drive the several brushes 23 to clean the inner bottom of the cold storage body 1, so that the cleaned dust and impurities move to the inside of the storage cavity 26.

[0046] As a technical optimization of the present invention, an installation groove 5 is provided at the bottom of the cold storage body 1 near the door hole 2. The installation groove 5 is located inside the protective frame 3. A discharge hole 4 is provided on the inner wall of the end of the installation groove 5 near the door hole 2. The discharge hole 4 penetrates the cold storage body 1. A guide slope is provided at the corner of the bottom of the installation groove 5 near the protective plate 9. The installation groove 5 is located at the bottom side of the lifting plate 18. When the staff finishes placing the materials, the lifting plate 18 will rotate to the side of the protective frame 3, and the dust inside the storage cavity 26 can slide into the interior of the installation groove 5.

[0047] As a technical optimization of the present invention, a conveyor belt 28 is installed inside the mounting groove 5. Rotating rollers 29 are installed at both ends of the conveyor belt 28. The outer wall of the rotating rollers 29 abuts against the inner wall of the conveyor belt 28. The two ends of the rotating rollers 29 are respectively rotatably mounted on the inner walls of the two ends of the mounting groove 5. A protective groove is opened on the inner wall of one end of the mounting groove 5. A motor 30 is installed on the inner wall of the protective groove. The output shaft of the motor 30 is connected to one end of one of the rotating rollers 29 through a coupling. When in use, the motor 30 can drive the conveyor belt 28 to rotate through the rotating rollers 29, which facilitates the workers to carry out and carry out the materials through the conveyor belt 28. At the same time, it may push away impurities and dust inside the mounting groove 5.

[0048] As a technical optimization of the present invention, the protective plate 9 has fixing holes 17 at both ends of its side. The two fixing holes 17 are located on both sides of the rotating frame 19. Electric telescopic rods 16 are rotatably installed on both sides of the protective frame 3. The end of the electric telescopic rod 16 away from the side of the protective frame 3 passes through the fixing hole 17 and is rotatably installed on the side of the rotating frame 19. When in use, the electric telescopic rod 16 can drive the rotating frame 19 and the lifting plate 18 to rotate, so that the lifting plate 18 can both transport and handle materials and seal the interior of the cold storage body 1.

[0049] As a technical optimization of the present invention, a plurality of air outlets 15 are installed on the inner walls of both sides of the protective frame 3. The plurality of air outlets 15 are located on both sides of the groove 14. A blower 11 is installed on both sides of the protective frame 3. The air outlet pipe of the blower 11 is connected to the air outlet 15. When the worker places the material on the top of the conveyor belt 28, the plurality of air outlets 15 can blow on the surface of the material to clean the surface of the material.

[0050] As a technical optimization of the present invention, a top plate 8 is installed on the inner top of the cold storage body 1 along its length. Several second radio frequency antennas 31 are installed obliquely on both sides of the top plate 8. Several lighting lamps 32 and fire sprinkler heads 33 are installed at the bottom of the top plate 8. The fire sprinkler heads 33 are located between two adjacent lighting lamps 32. A reader 12 is installed on the top of the protective frame 3. The first radio frequency antenna 13 and the second radio frequency antenna 31 are electrically connected to the reader 12. During use, the several second radio frequency antennas 31 on the top plate 8 can perform timed inventory of the materials on the shelf 6, and understand and record the quantity and location of the materials.

[0051] As a technical optimization of the present invention, shelves 6 are installed on both sides of the inner bottom of the cold storage body 1. The two shelves 6 are located below the two sides of the top plate 8 respectively. The shelves 6 are located between the guide rail 7 and the inner wall of the cold storage body 1. When the lifting plate 18 moves the materials, the lifting plate 18 is located between the two adjacent shelves 6, which makes it convenient for the staff to place and pick up the materials on the shelves 6.

[0052] An inventory method for a conventional cold storage facility based on ultra-high frequency RFID technology, as disclosed in this invention, includes the following steps:

[0053] Step 1: When in use, the staff places the materials to be stored on the top of the conveyor belt 28. Several air outlets 15 on both sides of the inner wall of the protective frame 3 blow air to clean the surface of the materials. At the same time, the first radio frequency antenna 13 on both sides of the inner wall and the inner top of the protective frame 3 collects and records the information of the materials through the electronic tags on the surface of the materials. Several second radio frequency antennas 31 on the side of the top plate 8 can record the quantity and position of the materials on the shelves 6 inside the cold storage body 1.

[0054] Step 2: After the material on the conveyor belt 28 is placed, the electric telescopic rod 16 pushes the rotating frame 19 and the lifting plate 18 to rotate, so that the limiting block 20 on the lifting plate 18 rotates between the two electric sliders 34 inside the guide rail 7, and the conveyor belt 28 drives the material on it to the top of the lifting plate 18.

[0055] Step 3: The electric slider 34 drives the lifting plate 18 and the material on it to move away from the door opening 2 by pushing the limit block 20. At the same time, the lifting plate 18 moves out of the limit slot 25 on the rotating frame 19 until the lifting plate 18 and the material on it move to the designated position on the side of the shelf 6 according to the electronic tag information on the material. The staff then place the material on the lifting plate 18 on the shelf 6.

[0056] Step 4: When the lifting plate 18 moves, several brushes 23 located on the sides of the fixed plates 21 on both sides of the lifting plate 18 rotate around the output shaft of the motor 35. When the brushes 23 rotate, they clean the impurities and dust at the bottom of the cold storage body 1. When the brushes 23 rotate, they drive the impurities and dust through the feed hole 27 to the storage cavity 26 for storage.

[0057] Step 5: After the staff has finished storing the materials on the lifting plate 18, the electric slider 34 pushes the lifting plate 18 to move back into the limit groove 25. The electric telescopic rod 16 drives the rotating frame 19 and the lifting plate 18 to rotate to the side of the protective frame 3. When the lifting plate 18 rotates, the impurities and dust inside the storage cavity 26 slide down into the installation groove 5 through the discharge hole 10. The impurities and dust inside the installation groove 5 are discharged to the outside through the discharge hole 4 by the rotation of the conveyor belt 28.

[0058] In use, the present invention allows workers to install a protective door on the end of the cold storage body 1 near the door opening 2 to protect the internal temperature of the cold storage body 1 and reduce heat loss to the outside. The protective door works in conjunction with the lifting plate 18 to provide double protection for the cold storage body 1. Alternatively, the protective door can be omitted for ease of material handling and placement; installation can be selective based on usage. Workers place the materials to be stored sequentially through the door opening 2 onto the top of the conveyor belt 28 inside the protective frame 3. The top of the conveyor belt 28 passes through the mounting groove 5, facilitating the transport of materials to the lifting plate 18. As workers place the materials, several first radio frequency antennas 13 located on the inner walls and top of the protective frame 3 transmit radio frequency signals to the materials. Electronic tags on the material surface transmit information to the reader 12 via the first radio frequency antennas 13, allowing for the reading, transporting, and recording of the incoming material information.

[0059] When staff place materials to be stored on top of conveyor belt 28, several air outlets 15 on the inner walls of both sides of the protective frame 3 blow air onto the surface of the materials via blowers 11. This cleans the dust from the material surface, and the air blown out by the outlets 15, after cleaning the dust, is blown to the outside through the door openings 2. This continuous cleaning of the material surface prevents external dust from entering the cold storage unit 1 along with the materials, thus avoiding excessive dust accumulation inside the unit and ensuring the storage effectiveness and hygiene of the materials. When staff need to enter the cold storage unit 1, they can stand on top of conveyor belt 28, and the air outlets 15 will clean the dust off their clothing. This reduces dust accumulation inside the cold storage unit 1, preventing materials from spoiling or becoming unhygienic due to excessive dust.

[0060] After the staff has placed the materials on top of the conveyor belt 28, the staff can activate the electric telescopic rods 16 on both sides of the protective frame 3. The electric telescopic rods 16 push the rotating frame 19 on the side of the protective frame 3 and the lifting plate 18 on it to rotate, so that the side of the rotating frame 19 away from the door hole 2 abuts against the inner bottom of the cold storage body 1. When in use, the rotating frame 19 is located between the protective plate 9 and the guide rail 7. At the same time, the limiting block 20 on the side of the lifting plate 18 rotates into the interior of the guide rail 7, and the limiting block 20 is located inside the guide rail 7 on the side of one of the electric sliders 34 away from the door hole 2. After the staff has finished rotating the rotating frame 19 and the lifting plate 18, the staff can start the motor 30. The output shaft of the motor 30 drives the rotating roller 29 to rotate. When the rotating roller 29 rotates, it drives the conveyor belt 28 to rotate, so that the material on the top of the conveyor belt 28 moves to the top of the lifting plate 18. When in use, the staff does not need to manually or by trolley carry the material to be stored into the cold storage body 1. It is more convenient to use and reduces the manpower required for material storage. At the same time, it can also prevent the mud and dust on the surface and wheels of the trolley from entering the interior of the cold storage body 1 when the staff carries the material by trolley. When the door opening 2 is small, it is more convenient for the staff to carry the material into the cold storage.

[0061] After the conveyor belt 28 transports the materials to be stored to the top of the lifting platform 18, the electric slider 34 located inside the guide rail 7 on the side of the limiting block 20 near the door opening 2 can push the limiting block 20 to move away from the protective frame 3. At the same time, the limiting block 20 can move the lifting platform 18 and the materials placed on top of it. In use, the lifting platform 18 and the materials on it can move between two adjacent shelves 6 inside the cold storage body 1 via the electric slider 34 until the lifting platform 18 and the materials on it move to the designated position on the side of the shelf 6 according to the electronic tag information on the materials. The staff can stand on the side of the lifting platform 18 and place the materials on the lifting platform 18 into the designated positions on the shelf 6 in sequence. When in use, there is no need for staff to search for the shelf 6 where the material to be stored needs to be placed inside the cold storage body 1. The electric slider 34 can move the material to the side of the designated shelf 6 according to the information recorded by the electronic tag on the material by the first radio frequency antenna 13. This makes it convenient for staff to place the material to be stored directly on the shelf 6 in the designated area. When staff are storing materials, it reduces the time spent by staff to find the shelf 6 where the material is placed and improves the efficiency of material storage.

[0062] When the rotating frame 19 rotates to the inner bottom of the cold storage body 1, the fixed plates 21 on both sides of the lifting plate 18 are positioned above the inner bottom of the cold storage body 1, and the several brushes 23 on the sides of the fixed plates 21 are in contact with the ground. When the electric slider 34 drives the lifting plate 18 and the materials on it to transport, the motor 35 can drive the several brushes 23 to clean the dust on the inner bottom of the cold storage body 1 through the mounting plate 22 on its output shaft. When the lifting plate 18 moves at the bottom of the cold storage body 1, several brushes 23 can move the dust and impurities at the bottom of the cold storage body 1 through the feed hole 27 into the storage cavity 26 inside the lifting plate 18. During use, the storage cavity 26 can collect and store the dust and impurities at the bottom of the cold storage body 1, making it convenient for staff to clean the inside of the cold storage body 1. At the same time, it prevents a small amount of material debris from falling to the bottom of the cold storage body 1 when staff are handling materials on the lifting plate 18. When material debris falls, there is no need for staff to manually clean it up, making it more convenient to use.

[0063] After the staff finishes storing the materials on the lifting plate 18, the electric slider 34 inside the guide rail 7, located in the direction away from the door opening 2 via the limit block 20, can push the lifting plate 18 towards the door opening 2 until the lifting plate 18 moves back into the limit groove 25 on the rotating frame 19. The electric telescopic rod 16 pulls the rotating frame 19 and the lifting plate 18, causing them to rotate towards the protective frame 3 until the side of the lifting plate 18 abuts against the protective frame 3. During use, the lifting plate 18 and the rotating frame 19 can cooperate to seal the cold storage body 1 near the door opening 2, preventing air inside the cold storage body 1 from dissipating to the outside through the protective frame 3 and the door opening 2 when storing materials. It also prevents dust and hot air from entering the interior of the cold storage body 1.

[0064] When the lifting plate 18 rotates towards the protective frame 3, the dust and impurities collected in the storage cavity 26 inside the lifting plate 18 can slide down through the discharge hole 10 into the installation groove 5. When the conveyor belt 28 rotates, the bottom end of the conveyor belt 28 can drive the dust and impurities at the bottom of the installation groove 5 to be discharged to the outside through the discharge hole 4. When the conveyor belt 28 transports materials to the materials at the top, it can automatically clean and discharge the dust and impurities inside the installation groove 5. During use, there is no need for personnel to manually clean the impurities, making it more convenient. When the lifting plate 18 rotates, it can both seal and protect the protective frame 3 and empty the dust and impurities inside the storage cavity 26. When personnel put materials into storage, the lifting plate 18 can also transport the materials.

[0065] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A conventional cold storage facility based on ultra-high frequency RFID technology, comprising a cold storage body (1), characterized in that, The cold storage body (1) has a door opening (2) at one end. A protective frame (3) is installed on the inner wall of the cold storage body (1) near the door opening (2). A protective plate (9) is installed on the outer wall of the protective frame (3) away from the cold storage body (1). Grooves (14) are provided on both inner walls of the protective frame (3) along the length direction. A first radio frequency antenna (13) is installed on the inner wall of the groove (14) and the inner top of the protective frame (3). A rotating frame (19) is rotatably installed on the bottom side of the protective frame (3) away from the inner wall of the cold storage body (1). On the inner walls of both sides of the rotating frame (19) near the protective frame (3), a limiting groove (25) is opened along the length direction. The top of the limiting groove (25) passes through the rotating frame (19). A lifting plate (18) is slidably installed inside the rotating frame (19). The two sides of the lifting plate (18) are slidably installed inside the two limiting grooves (25). The top of the lifting plate (18) passes through the limiting groove (25). A limiting block (20) is installed on the top of the lifting plate (18) near the corner on the side away from the protective frame (3). Guide rails (7) matching the limiting blocks (20) are installed on both sides of the inner bottom of the cold storage body (1) along the length direction. Electric sliders (34) are slidably installed at both ends of the guide rails (7). The lifting plate (18) has a storage cavity (26) inside. The bottom of the storage cavity (26) has a discharge hole (10). The top of the inner walls on both sides of the storage cavity (26) has a feed hole (27). The feed hole (27) and the discharge hole (10) both pass through the lifting plate (18). The top two sides of the lifting plate (18) are equipped with fixing plates (21). The fixing plates (21) are located above the feed hole (27). The bottom of the fixing plates (21) abuts against the top of the rotating frame (19). The fixing plate (21) has a fixing groove (24) on the side near the protective frame (3). A motor (35) is installed on the inner wall of the fixing groove (24). The output shaft of the motor (35) passes through the fixing plate (21) and is equipped with several mounting plates (22). Several brushes (23) are installed on the side of the mounting plate (22) away from the protective frame (3). An mounting groove (5) is opened at the bottom of the cold storage body (1) near the door hole (2). A conveyor belt (28) is installed inside the mounting groove (5). Fixing holes (17) are provided at both ends of the side of the protective plate (9). The two fixing holes (17) are located on both sides of the rotating frame (19). Electric telescopic rods (16) are rotatably installed on both sides of the protective frame (3). The end of the electric telescopic rod (16) away from the side of the protective frame (3) passes through the fixing hole (17) and is rotatably installed on the side of the rotating frame (19). A top plate (8) is installed on the inner top of the cold storage body (1) along the length direction. Several second radio frequency antennas (31) are installed obliquely on both sides of the top plate (8).

2. A conventional cold storage facility based on UHF RFID technology according to claim 1, characterized in that, The mounting groove (5) is located inside the protective frame (3). A discharge hole (4) is provided on the inner wall of the mounting groove (5) near the door hole (2). The discharge hole (4) penetrates the cold storage body (1). A guide slope is provided at the corner of the inner bottom of the mounting groove (5) near the protective plate (9). The mounting groove (5) is located on the bottom side of the lifting plate (18).

3. A conventional cold storage facility based on UHF RFID technology according to claim 2, characterized in that, Rotating rollers (29) are installed at both ends of the conveyor belt (28). The outer wall of the rotating rollers (29) abuts against the inner wall of the conveyor belt (28). The two ends of the rotating rollers (29) are respectively rotatably installed on the inner walls of the two ends of the mounting groove (5). A protective groove is provided on the inner wall of one end of the mounting groove (5). A motor (30) is installed on the inner wall of the protective groove. The output shaft of the motor (30) is connected to one end of one of the rotating rollers (29) through a coupling.

4. A conventional cold storage facility based on UHF RFID technology according to claim 1, characterized in that, Several air outlets (15) are installed on the inner walls of both sides of the protective frame (3). The air outlets (15) are located on both sides of the groove (14). A blower (11) is installed on both sides of the protective frame (3). The air outlet pipe of the blower (11) is connected to the air outlet (15).

5. A conventional cold storage facility based on UHF RFID technology according to claim 1, characterized in that, The bottom of the top plate (8) is equipped with several lighting lamps (32) and fire sprinkler heads (33). The fire sprinkler heads (33) are located between two adjacent lighting lamps (32). The top of the protective frame (3) is equipped with a reader (12). The first radio frequency antenna (13) and the second radio frequency antenna (31) are electrically connected to the reader (12).

6. A conventional cold storage facility based on UHF RFID technology according to claim 5, characterized in that, Shelves (6) are installed on both sides of the bottom of the cold storage body (1). The two shelves (6) are located below the top plate (8) on both sides respectively. The shelves (6) are located between the guide rail (7) and the inner wall of the cold storage body (1).

7. An inventory method for a conventional cold storage facility based on UHF RFID technology, as described in any one of claims 1-6, comprising the following steps: Step 1: When in use, the staff places the materials to be stored on the top of the conveyor belt (28). Several air outlets (15) on the inner walls of both sides of the protective frame (3) blow air to clean the surface of the materials. At the same time, the first radio frequency antenna (13) on the inner walls of both sides and the top of the protective frame (3) collects and records the information of the materials through the electronic tags on the surface of the materials. Several second radio frequency antennas (31) on the side of the top plate (8) record the quantity and position of the materials on the shelves (6) inside the cold storage body (1). Step 2: After the material on the conveyor belt (28) is placed, the electric telescopic rod (16) pushes the rotating frame (19) and the lifting plate (18) to rotate, so that the limit block (20) on the lifting plate (18) rotates between the two electric sliders (34) inside the guide rail (7), and the conveyor belt (28) moves the material on it to the top of the lifting plate (18). Step 3: The electric slider (34) drives the lifting plate (18) and the material on it to move away from the door opening (2) by pushing the limit block (20). At the same time, the lifting plate (18) moves out of the limit slot (25) on the rotating frame (19) until the lifting plate (18) and the material on it move to the designated position on the side of the shelf (6) according to the electronic tag information on the material. The staff places the material on the lifting plate (18) on the shelf (6). Step 4: When the lifting plate (18) moves, several brushes (23) located on the sides of the fixed plates (21) on both sides of the lifting plate (18) rotate around the output shaft of the motor (35). When the brushes (23) rotate, they clean the impurities and dust at the bottom of the cold storage body (1). When the brushes (23) rotate, they drive the impurities and dust through the feed hole (27) to the storage cavity (26) for storage. Step 5: After the staff has finished storing the materials on the lifting plate (18), the electric slider (34) pushes the lifting plate (18) to move back to the inside of the limiting groove (25), while the electric telescopic rod (16) drives the rotating frame (19) and the lifting plate (18) to rotate to the side of the protective frame (3). When the lifting plate (18) rotates, the impurities and dust inside the storage cavity (26) slide down into the inside of the installation groove (5) through the discharge hole (10), and the impurities and dust inside the installation groove (5) are discharged to the outside through the discharge hole (4) by the rotation of the conveyor belt (28).

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