Tobacco box two-dimensional code anti-counterfeiting scanning and tracking device

By designing the tobacco box QR code anti-counterfeiting scanning and tracking equipment, the problem of scanning equipment being offline during the production process is solved, and efficient, safe and comprehensive anti-counterfeiting scanning of tobacco box is achieved, ensuring product quality and safety.

CN120197633AInactive Publication Date: 2025-06-24湖南烟草公司株洲市公司
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202510298353.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-13
Publication Date
2025-06-24
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure CN120197633A_ABST
    Figure CN120197633A_ABST
Patent Text Reader

Abstract

The invention belongs to the technical field of two-dimensional code anti-counterfeiting, and discloses tobacco box two-dimensional code anti-counterfeiting scanning and tracking equipment which comprises a conveying mechanism, a bottom code scanning mechanism is arranged at one end of the conveying mechanism, anti-pinch mechanisms are arranged on the two sides of the end, away from the bottom code scanning mechanism, of the conveying mechanism, and anti-falling frames are arranged on the two sides of the top of the conveying mechanism. The middle sections of the two sides of the conveying mechanism are each provided with a pushing alignment mechanism, one end, close to the bottom code scanning mechanism, of the top of the conveying mechanism is provided with a three-side code scanning mechanism, the bottom of the conveying mechanism is provided with a supporting mechanism, an enterprise can track each production link by scanning a two-dimensional code, the product quality and safety are ensured, and the production efficiency is improved. Through the two-dimensional code technology, consumers can easily scan and verify the authenticity of tobacco products, sales of counterfeit tobacco products is effectively reduced, the tobacco box two-dimensional code anti-counterfeiting scanning and tracking device is usually connected with an information management system of an enterprise, and real-time uploading and automatic processing of data are achieved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This application relates to the field of two-dimensional code anti-counterfeiting technology, and more specifically, to a two-dimensional code anti-counterfeiting scanning and tracking device for tobacco boxes. Background Art

[0002] By scanning the two-dimensional code and entering the verification website of the tobacco product, the authenticity of the product can be queried in combination with the digital verification code visible after opening, or by checking the number of query records of the two-dimensional code of the product on the verification website to verify the authenticity of the product. Some industrial companies have launched gift package activities, generally in the form of red envelope draws, in order to encourage consumers to participate in combating counterfeiting, building an integrity system, or encouraging consumers to repurchase cigarettes of this brand.

[0003] Since the production of boxed tobacco is carried out in a production line operation, when working continuously, the placement of personnel will shift, resulting in the product going offline without being scanned, so that the customers who purchase cannot query the authenticity of this box of tobacco on the tobacco anti-counterfeiting website.

[0004] To solve the above problems, this application provides a two-dimensional code anti-counterfeiting scanning and tracking device for tobacco boxes. Summary of the Invention

[0005] The two-dimensional code anti-counterfeiting scanning and tracking device for tobacco boxes provided by this application adopts the following technical solutions: A two-dimensional code anti-counterfeiting scanning and tracking device for tobacco boxes includes a conveying mechanism. One end of the conveying mechanism is provided with a bottom scanning mechanism. Both sides of the end of the conveying mechanism far from the bottom scanning mechanism are provided with anti-pinch mechanisms. Both sides of the top of the conveying mechanism are provided with anti-falling frames. Both middle sections of both sides of the conveying mechanism are provided with propulsion and alignment mechanisms. One end of the top of the conveying mechanism close to the bottom scanning mechanism is provided with a three-side scanning mechanism. The bottom of the conveying mechanism is provided with a support mechanism.

[0006] Further, the propulsion and alignment mechanisms are all located outside the anti-falling frames, and the propulsion and alignment mechanisms all pass through the anti-falling frames, and the anti-pinch mechanisms are all located between the relative anti-falling frames.

[0007] Further, the conveying mechanism includes a conveyor belt housing. The number of conveyor belt housings is two and they are symmetrically distributed. Uniformly distributed conveyor rollers are provided between the relative conveyor belt housings. A driving motor is provided on one side of one conveyor belt housing far from the conveyor rollers. Gears are provided at both ends of the conveyor rollers. Linkage toothed belts are wound around the outer walls of the gears, and the linkage toothed belts and gears are all located inside the conveyor belt housing.

[0008] Further, the anti-pinch mechanism includes anti-pinch plates. The number of anti-pinch plates is two. Curved parts are provided at the ends of the anti-pinch plates far from the bottom scanning mechanism.

[0009] Furthermore, the propulsion alignment mechanism includes an air pump. On the top of one side of the air pump close to the conveying mechanism, there are evenly distributed air pump push rods. At one end of the air pump push rod close to the conveying mechanism, there is an alignment rod, and both the air pump push rod and the alignment rod are located above the conveying mechanism.

[0010] Furthermore, the three-sided code scanning mechanism includes a gantry. On both sides of the inner wall of the gantry, there are symmetrically arranged side code scanners, and on the top of the inner wall of the gantry, there is a top code scanner.

[0011] Furthermore, the bottom code scanning mechanism includes a discharge frame. A through slot runs through one side of the inner top of the discharge frame close to the conveying mechanism, and at the same position of the bottom of the discharge frame corresponding to the through slot, there is a bottom code scanner.

[0012] Furthermore, the support mechanism includes a support frame. On the top between the opposite sides of the support frame, there are evenly distributed reinforcing beams, and in the middle section between the opposite reinforcing beams, there are reinforcing ribs.

[0013] In summary, the present application has the following beneficial technical effects: By scanning the QR code, enterprises can track each production link to ensure product quality and safety. Through QR code technology, consumers can easily scan and verify the authenticity of tobacco products, effectively reducing the sales of counterfeit tobacco products. The tobacco box QR code anti-counterfeiting scanning and tracking device is usually connected to the enterprise's information management system, realizing real-time data upload and automated processing, reducing the need for manual operations, improving work efficiency and accuracy. The three-sided code scanning mechanism realizes the comprehensive scanning of the QR codes on three sides of the tobacco box through the combination of the gantry, side code scanners, and top code scanners. The bottom code scanning mechanism completes the accurate scanning of the QR code on the bottom of the tobacco box through the cooperation of the discharge frame, through slot, and bottom code scanner. These designs together constitute an important part of the tobacco box QR code anti-counterfeiting scanning and tracking device, providing comprehensive and reliable data support for anti-counterfeiting verification. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present application; Figure 2 is a schematic diagram of the linkage toothed belt structure of the present application; Figure 3 is a schematic diagram of the gear structure of the present application; Figure 4 is a schematic diagram of the propulsion alignment mechanism structure of the present application; Figure 5 is a schematic diagram of the three-sided code scanning mechanism structure of the present application; Figure 6 is a schematic diagram of the support mechanism structure of the present application.

[0015] Description of reference numerals in the figure: 1. Conveyor mechanism; 101. Conveyor belt housing; 102. Conveyor roller; 103. Driving motor; 104. Linkage toothed belt; 105. Gear; 2. Anti-pinch mechanism; 201. Anti-pinch plate; 202. Bending part; 3. Anti-falling frame; 4. Pushing and aligning mechanism; 401. Air pump; 402. Air pump push rod; 403. Aligning rod; 5. Three-sided code scanning mechanism; 501. Gantry; 502. Side code scanner; 503. Top code scanner; 6. Bottom code scanning mechanism; 601. Discharge frame; 602. Through slot; 603. Bottom code scanner; 7. Support mechanism; 701. Support frame; 702. Reinforcing beam; 703. Reinforcing rib. Detailed implementation manners

[0016] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application; obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0017] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0018] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "provided with", "sheathed / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0019] Embodiment: An embodiment of the present application discloses a tobacco box two-dimensional code anti-counterfeiting scanning and tracking device. Please refer to Figures 1-6, including a conveying mechanism 1, with a bottom code scanning mechanism 6 provided at one end of the conveying mechanism 1, anti-pinch mechanisms 2 provided on both sides at the end of the conveying mechanism 1 far from the bottom code scanning mechanism 6, anti-drop frames 3 provided on both sides of the top of the conveying mechanism 1, propulsion alignment mechanisms 4 provided in the middle sections on both sides of the conveying mechanism 1, a three-sided code scanning mechanism 5 provided at one end of the top of the conveying mechanism 1 close to the bottom code scanning mechanism 6, and a support mechanism 7 provided at the bottom of the conveying mechanism 1. The propulsion alignment mechanisms 4 are all located outside the anti-drop frames 3 and penetrate through the anti-drop frames 3. The anti-pinch mechanisms 2 are all located between the opposite sides of the anti-drop frames 3. The conveying mechanism 1 serves as the core of the entire device and is responsible for the continuous conveyance of tobacco boxes. One end of it is connected to the bottom code scanning mechanism 6, which is used to first scan the two-dimensional code at the bottom of the tobacco box to achieve preliminary anti-counterfeiting verification. The bottom code scanning mechanism 6 is located at one end of the conveying mechanism 1 and is specifically designed to scan the two-dimensional code at the bottom of the tobacco box to ensure the authenticity and traceability of the tobacco box. The anti-pinch mechanisms 2 are provided on both sides at the end of the conveying mechanism 1 far from the bottom code scanning mechanism 6, effectively preventing the tobacco box from being accidentally pinched or damaged during conveyance, and improving the safety performance of the device. The anti-drop frames 3 are arranged along both sides of the top of the conveying mechanism 1, providing a safe conveyance channel for the tobacco box, effectively preventing the tobacco box from falling during conveyance, and ensuring the stable operation of the device. The propulsion alignment mechanisms 4 are located in the middle sections on both sides of the conveying mechanism 1 and penetrate through the anti-drop frames 3. These mechanisms are responsible for pushing and aligning the tobacco boxes to ensure that each tobacco box can accurately reach the code scanning position, improving the accuracy and efficiency of code scanning. The three-sided code scanning mechanism 5 is provided at one end of the top of the conveying mechanism 1 close to the bottom code scanning mechanism 6 and is used to scan the two-dimensional codes on three sides of the tobacco box, further enhancing the reliability and comprehensiveness of anti-counterfeiting verification. The support mechanism 7 is located at the bottom of the conveying mechanism 1, providing a stable support for the entire device and ensuring the stability and reliability of the device during long-term operation. This tobacco box two-dimensional code anti-counterfeiting scanning and tracking device realizes the efficient, safe and comprehensive anti-counterfeiting scanning and tracking of tobacco boxes by integrating multiple functions such as conveyance, alignment, code scanning, anti-pinch and anti-drop. Each component works together to ensure the high performance and practicality of the device.

[0020] The conveying mechanism 1 includes a conveyor belt housing 101. The number of the conveyor belt housings 101 is two and they are symmetrically distributed. A uniformly distributed conveying roller 102 is provided between the opposite conveyor belt housings 101. A driving motor 103 is provided on one side of the conveyor belt housing 101 away from the conveying roller 102. Gears 105 are provided at both ends of the conveying roller 102. A linkage toothed belt 104 is wound around the outer walls of the gears 105, and the linkage toothed belt 104 and the gears 105 are both located inside the conveyor belt housing 101. The anti-pinch mechanism 2 includes anti-pinch plates 201. The number of the anti-pinch plates 201 is two. Bending portions 202 are provided at one ends of the anti-pinch plates 201 away from the bottom scanning mechanism 6. The conveying mechanism 1 is mainly composed of two symmetrically distributed conveyor belt housings 101, and these two housings provide protection and support for the internal conveying components. Between the opposite conveyor belt housings 101, a plurality of conveying rollers 102 are uniformly distributed. These rollers cooperate together to drive the tobacco boxes to move smoothly on the conveyor belt. In order to drive these conveying rollers 102, a driving motor 103 is installed on one side of the conveyor belt housing 101. The driving motor 103 is connected to the conveying roller 102 through a linkage rack to provide power for it. Gears 105 are installed at both ends of each conveying roller 102, and these gears are connected to each other through the linkage toothed belt 104 wound around their outer walls. The linkage toothed belt 104 ensures that all the conveying rollers 102 can rotate synchronously, thus maintaining the smooth operation of the conveyor belt. This design not only improves the conveying efficiency but also helps to reduce wear and noise.

[0021] The described propulsion alignment mechanism 4 includes an air pump 401. On the top of the side of the air pump 401 close to the conveying mechanism 1, there are evenly distributed air pump push rods 402. At one end of the air pump push rod 402 close to the conveying mechanism 1, there is an alignment rod 403. And both the air pump push rod 402 and the alignment rod 403 are located above the conveying mechanism 1. The propulsion alignment mechanism 4 is mainly composed of the air pump 401, the air pump push rod 402, and the alignment rod 403. The air pump 401 serves as the power source and is responsible for providing the required air pressure for the entire propulsion alignment mechanism. It is usually installed at an appropriate position on the equipment for easy maintenance and operation, on the top of the side close to the conveying mechanism 1. The air pump 401 is connected to a plurality of evenly distributed air pump push rods 402. These push rods can be telescopic under the action of the air pump 401, thereby realizing the functions of propelling and aligning the tobacco boxes. The number and distribution of the air pump push rods 402 are usually determined according to the width of the conveying mechanism 1 and the size of the tobacco boxes to ensure that each tobacco box can be fully propelled and aligned. At one end of each air pump push rod 402 close to the conveying mechanism 1, there is an alignment rod 403 installed. The alignment rods 403 are usually made of hard materials to ensure sufficient rigidity and stability when propelling the tobacco boxes. Their positions and lengths are also carefully designed to ensure that they can accurately contact the tobacco boxes during the propulsion process and push them to the predetermined alignment positions. The main function of the propulsion alignment mechanism 4 is to, when the tobacco boxes are conveyed to the designated positions, push the alignment rods 403 towards the tobacco boxes through the telescopic action of the air pump push rods 402, thereby pushing them to the predetermined alignment positions. This process not only helps to ensure that each tobacco box can accurately reach the scanning position, improving the accuracy and efficiency of scanning, but also helps to reduce the scanning failures or equipment malfunctions caused by the incorrect positions of the tobacco boxes. The propulsion alignment mechanism 4 provides power through the air pump 401 and utilizes the telescopic function of the air pump push rods 402 and the rigid support of the alignment rods 403 to achieve the smooth and accurate propulsion and alignment of the tobacco boxes. This design not only improves the automation degree and operation efficiency of the equipment but also helps to ensure the stability and safety of the tobacco boxes during the conveying process.

[0022] The three - side code scanning mechanism 5 includes a gantry 501. On both sides of the inner wall of the gantry 501, symmetric side code scanners 502 are provided. On the top of the inner wall of the gantry 501, a top code scanner 503 is provided. The bottom code scanning mechanism 6 includes a discharge frame 601. A through - slot 602 is penetrated through one side of the top of the discharge frame 601 near the conveying mechanism 1. At the bottom of the discharge frame 601 at the same position as the through - slot 602, a bottom code scanner 603 is provided. The three - side code scanning mechanism 5 is mainly composed of a gantry 501, side code scanners 502, and a top code scanner 503. The gantry 501, as a sturdy support structure, is designed to provide a stable working environment for accurately scanning the three sides of the tobacco box. On both sides of the inner wall of the gantry 501, symmetric side code scanners 502 are installed. These code scanners are responsible for scanning the left and right sides of the tobacco box to ensure comprehensive collection of two - dimensional code information. The position and angle of the side code scanners are carefully adjusted to ensure that the two - dimensional code image can be accurately captured when the tobacco box passes through. On the top of the inner wall of the gantry 501, a top code scanner 503 is also provided. This code scanner is responsible for scanning the two - dimensional code on the top of the tobacco box, providing additional data support for anti - counterfeiting verification. The design of the top code scanner takes into account the height and shape of the tobacco box to ensure an appropriate distance and angle during the scanning process. The bottom code scanning mechanism 6 is mainly composed of a discharge frame 601, a through - slot 602, and a bottom code scanner 603. The discharge frame 601, as a structure for collecting and discharging the tobacco box, is designed to be seamlessly docked with the conveying mechanism 1 so that the tobacco box can be smoothly discharged after scanning. On the inner side of the top of the discharge frame 601, a through - slot 602 is penetrated through one side near the conveying mechanism 1. This through - slot allows the tobacco box to pass through smoothly during the conveying process and reach the scanning area of the bottom code scanner. The design of the through - slot takes into account the size and shape of the tobacco box to ensure an appropriate gap and positioning during the scanning process. The bottom code scanner 603 located at the bottom of the discharge frame 601 is responsible for scanning the two - dimensional code on the bottom of the tobacco box. The position and angle of this code scanner are adjusted to ensure that the two - dimensional code image can be accurately captured when the tobacco box passes through the through - slot. The use of the bottom code scanner provides key data for anti - counterfeiting verification, helping to ensure the authenticity and traceability of the tobacco box. The three - side code scanning mechanism 5 realizes the comprehensive scanning of the two - dimensional codes on the three sides of the tobacco box through the combination of the gantry 501, side code scanners 502, and the top code scanner. The bottom code scanning mechanism 6, through the cooperation of the discharge frame 601, the through - slot 602, and the bottom code scanner, completes the accurate scanning of the two - dimensional code on the bottom of the tobacco box. These designs together constitute an important part of the tobacco box two - dimensional code anti - counterfeiting scanning and tracking device, providing comprehensive and reliable data support for anti - counterfeiting verification.

[0023] The support mechanism 7 includes a support frame 701. At the top between the opposite sides of the support frame 701, evenly distributed reinforcing beams 702 are provided. In the middle section between the opposite sides of the reinforcing beams 702, reinforcing ribs 703 are provided. The support mechanism 7 is an important component in the tobacco box two-dimensional code anti-counterfeiting scanning and tracking device, and it is mainly responsible for providing stable support for the entire device. This mechanism is mainly composed of a support frame 701, reinforcing beams 702, and reinforcing ribs 703. The support frame 701 is the foundation of the entire support mechanism, and it is usually made of strong metal materials such as steel or aluminum alloy to ensure sufficient strength and stability. The design of the support frame 701 takes into account the overall layout and weight distribution of the device to ensure that it can withstand various forces and torques generated during the operation of the device. At the top between the opposite sides of the support frame 701, multiple reinforcing beams 702 are evenly distributed. These reinforcing beams not only increase the stiffness of the support frame but also improve its torsional and bending resistance. The number and position of the reinforcing beams 702 are usually determined according to the size and weight of the device to ensure the best support effect. In the middle section between the opposite sides of each reinforcing beam 702, a reinforcing rib 703 is provided. The reinforcing rib is a thin and strong structural member that increases the overall strength and stability by forming connections between beams or plates. In the support mechanism 7, the reinforcing rib 703 plays a further role in strengthening and reinforcing, ensuring that the support frame 701 remains stable when facing various loads. The main function of the support mechanism 7 is to provide stable support to ensure that the tobacco box two-dimensional code anti-counterfeiting scanning and tracking device can remain stable during operation. Through reasonable structural design and material selection, the support mechanism 7 can withstand various forces and torques generated during the operation of the device, preventing the device from deforming or being damaged. At the same time, the addition of the reinforcing beams 702 and the reinforcing ribs 703 further improves the stiffness and stability of the support mechanism, making it more suitable for various complex working environments. The support mechanism 7 provides stable support for the tobacco box two-dimensional code anti-counterfeiting scanning and tracking device through the ingenious combination of the support frame 701, the reinforcing beams 702, and the reinforcing ribs 703. This design not only ensures the stability and safety of the device but also improves its torsional and bending resistance, making it more suitable for various working environments. At the same time, through reasonable structural design and material selection, the support mechanism 7 also achieves a balance between lightweight and high strength, providing a strong guarantee for the overall performance of the device.

[0024] The above are all preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A tobacco box QR code anti-counterfeiting scanning and tracking device, comprising a conveying mechanism (1), characterized in that: A bottom code scanning mechanism (6) is provided at one end of the conveying mechanism (1), anti-clamping mechanisms (2) are provided on both sides of an end of the conveying mechanism (1) away from the bottom code scanning mechanism (6), anti-dropping frames (3) are provided on both sides of the top of the conveying mechanism (1), a propulsion alignment mechanism (4) is provided at the middle section of both sides of the conveying mechanism (1), a three-side code scanning mechanism (5) is provided at one end of the top of the conveying mechanism (1) close to the bottom code scanning mechanism (6), and a supporting mechanism (7) is provided at the bottom of the conveying mechanism (1).

2. A tobacco box two-dimensional code anti-counterfeiting scanning and tracking device according to claim 1, characterized in that: The propulsion alignment mechanisms (4) are all located on the periphery of the anti-drop frame (3), and the propulsion alignment mechanisms (4) pass through the anti-drop frame (3), and the anti-clamping mechanisms (2) are all located between the anti-drop frames (3).

3. A tobacco box two-dimensional code anti-counterfeiting scanning and tracking device according to claim 1, characterized in that: The conveying mechanism (1) comprises a conveyor belt shell (101), wherein the number of the conveyor belt shells (101) is two and they are symmetrically distributed, and evenly distributed conveyor rollers (102) are arranged between the conveyor belt shells (101) opposite to each other, and a driving motor (103) is arranged on one side of the conveyor belt shell (101) away from the conveyor rollers (102), and gears (105) are arranged at both ends of the conveyor rollers (102), and a linkage toothed belt (104) is wound around the outer wall of the gear (105), and the linkage toothed belt (104) and the gear (105) are both located on the conveyor belt shell (101).

4. A tobacco box two-dimensional code anti-counterfeiting scanning and tracking device according to claim 1, characterized in that: The anti-pinch mechanism (2) comprises an anti-pinch plate (201), the number of the anti-pinch plates (201) is two, and the anti-pinch plates (201) are each provided with a bent portion (202) at one end away from the bottom code scanning mechanism (6).

5. The tobacco box two-dimensional code anti-counterfeiting scanning and tracking device according to claim 1, characterized in that: The propulsion alignment mechanism (4) comprises an air pump (401), and a top portion of the air pump (401) close to the conveying mechanism (1) is provided with evenly distributed air pump push rods (402), and an end of the air pump push rod (402) close to the conveying mechanism (1) is provided with an alignment rod (403), and both the air pump push rod (402) and the alignment rod (403) are located above the conveying mechanism (1).

6. A tobacco box two-dimensional code anti-counterfeiting scanning and tracking device according to claim 1, characterized in that: The three-side code scanning mechanism (5) comprises a gantry (501), and mutually symmetrical side code scanning devices (502) are provided on both sides of the inner wall of the gantry (501), and a top code scanning device (503) is provided on the top of the inner wall of the gantry (501).

7. The tobacco box two-dimensional code anti-counterfeiting scanning and tracking device according to claim 1, characterized in that: The bottom code scanning mechanism (6) comprises a discharging frame (601), a through slot (602) is provided on one side of the top of the discharging frame (601) close to the conveying mechanism (1), and a bottom code scanning machine (603) is provided at the same position of the through slot (602) at the bottom of the discharging frame (601).

8. The tobacco box two-dimensional code anti-counterfeiting scanning and tracking device according to claim 1, characterized in that: The support mechanism (7) comprises a support frame (701), the tops of the support frames (701) are provided with evenly distributed reinforcement beams (702), and the middle sections of the reinforcement beams (702) are provided with reinforcement ribs (703).