Steel cylinder three-code-in-one tracing device

Abstract

The utility model relates to the technical field of steel cylinder production, in particular to steel cylinder three-code-in-one tracing equipment which comprises a roller way conveying line used for conveying steel cylinders, the roller way conveying line comprises a support, the support is rotationally connected with a plurality of conveying rollers which are arranged at equal intervals front and back, and a main machine frame is arranged on the outer side of the roller way conveying line. A three-code-in-one tracing host is arranged at the top of the main rack, a first adjusting part is arranged on the right side of the inner wall of the main rack, a shield two-code recognition device is arranged on the first adjusting part, a second adjusting part is arranged at the position, close to the left side, of the top of the inner wall of the main rack, and a valve two-dimensional code recognition device is arranged on the second adjusting part. According to the steel cylinder three-code-in-one tracing equipment, through cooperative work of the shield two-code recognition device and the valve two-dimensional code recognition device, a two-dimensional code on a steel cylinder shield, a hollow-out code and a two-dimensional code at a valve can be collected at the same time, three-code-in-one data integration is achieved, and potential safety hazards caused by lack of a single tracing code are eliminated.

Description

Technical Field

[0001] This utility model relates to the field of steel cylinder production technology, specifically a steel cylinder three-code integrated traceability device. Background Technology

[0002] Gas cylinders are essential containers for storing and transporting various gases, widely used in industries such as manufacturing, medicine, and food. Their structural design and material selection enable them to withstand high pressures and ensure the safety of gases during transportation and use. However, with the increasing frequency of cylinder use and the complexity of application environments, effective management and traceability of cylinder information have become crucial. Cylinder traceability devices have emerged to address this need, helping users record and track the status, usage history, and maintenance records of each cylinder, thereby improving safety and management efficiency.

[0003] Patent CN211827301U discloses a gas cylinder traceability system, including an identification device for recognizing the gas cylinder's identity information, a weighing device for weighing the identified gas cylinder, a camera device for photographing the weighing process, and a control unit for coordinating the operation of the above devices. In this invention, under the control of the control unit, the identification device identifies the gas cylinder, the weighing device weighs the gas cylinder, and the camera device photographs the weighing process. This facilitates the storage of the identified and weighed gas cylinder information, enabling subsequent traceability of the gas cylinder and achieving traceability for each gas cylinder's pre-inspection and re-inspection. Moreover, the traceability process is automatically completed by the identification device, weighing device, and camera device, making it convenient, fast, and labor-saving.

[0004] The aforementioned existing technologies identify gas cylinders using identification devices; however, these technologies still have certain limitations. Specifically, while identification devices can read the QR codes and perforated codes on the cylinder covers, modern gas cylinders, for enhanced security, typically also have traceability QR codes on the valves. Therefore, existing systems fail to comprehensively read all three types of traceability codes on the cylinders, leaving potential security risks. This deficiency hinders the effective management and traceability of gas cylinders and may, in some cases, lead to information asymmetry and security risks. In light of this, we propose a gas cylinder three-code integrated traceability device to address the shortcomings of existing technologies and improve the security and effectiveness of gas cylinder traceability management. Utility Model Content

[0005] The purpose of this utility model is to provide a three-code integrated traceability device for steel cylinders to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A three-code integrated traceability device for steel cylinders includes a roller conveyor line for transporting steel cylinders. The roller conveyor line includes a support frame, on which multiple conveying rollers are rotatably connected in a front-to-back equidistant arrangement for transporting steel cylinders. The steel cylinders are placed in the center, ensuring that the QR code and the perforated code on the steel cylinder cover face directly to the right, so that the two codes on the steel cylinder cover can be recognized by the cover two-code recognition device. A main frame is provided on the outside of the roller conveyor line, and a three-code integrated traceability host is provided on the top of the main frame. The three-code integrated traceability host is used to integrate the data collected by the cover two-code recognition device and the valve QR code recognition device and upload them to a cloud management platform.

[0008] The right side of the inner wall of the main frame is provided with a first adjusting component, and the first adjusting component is provided with a protective cover two-code recognition device. The first adjusting component can adjust the height of the protective cover two-code recognition device and the distance between the protective cover two-code recognition device and the gas cylinder cover, so as to adapt to different models of gas cylinders. The protective cover two-code recognition device reads the QR code and the hollow code of the gas cylinder cover simultaneously through an optical sensor to avoid human operation error.

[0009] A second adjusting component is located at the top of the inner wall of the main frame and near the left side. The second adjusting component is equipped with a valve QR code recognition device. The second adjusting component can adjust the height of the valve QR code recognition device. The valve QR code recognition device is located directly above the gas cylinder and is adapted to different models of gas cylinders to recognize the valve QR code. The valve QR code recognition device adopts a wide-angle lens design to ensure accurate recognition of the QR code at the gas cylinder valve.

[0010] Preferably, each of the conveying roller shafts is provided with a double-groove drive wheel at its left end, and two adjacent double-groove drive wheels are connected by a drive belt to realize the synchronous rotation of multiple conveying rollers and ensure the smooth conveying of steel cylinders.

[0011] Preferably, the support has an L-shaped mounting plate on the left side, and a drive motor is located on the left side of the L-shaped mounting plate. The drive motor is powered by an external power source. The output shaft of the drive motor is coaxially connected to the shaft of one of the double-groove transmission wheels. The drive motor drives one double-groove transmission wheel to rotate, and multiple double-groove transmission wheels rotate synchronously through a transmission belt. The bottom of the support has multiple support legs arranged in a matrix. The support legs are fixed to the ground or base with bolts to prevent the roller conveyor line from shaking during operation.

[0012] Preferably, the first adjusting component includes a strip-shaped vertical plate fixedly connected to the right side of the inner wall of the main frame. A T-shaped connecting plate is provided on the left side of the strip-shaped vertical plate, and an adjustable adjusting plate is provided on the outer side of the T-shaped connecting plate. The strip-shaped vertical plate and the T-shaped connecting plate form a vertical guiding structure, restricting the adjusting plate to move only in the vertical direction. A rectangular horizontal tube is provided at the top left side of the adjusting plate, and a rectangular horizontal plate is sleeved inside the rectangular horizontal tube. The two-code identification device of the protective cover is installed on the left side of the rectangular horizontal plate by bolts. The sleeve design of the rectangular horizontal tube and the rectangular horizontal plate allows the two-code identification device of the protective cover to move horizontally, further adapting to cylinders of different diameters.

[0013] Preferably, a T-shaped connecting groove is provided on the right side of the adjusting plate, and the adjusting plate is connected to the outside of the T-shaped connecting plate through the T-shaped connecting groove. A positioning bolt is threadedly connected to the left side of the adjusting plate near the bottom, and the threaded end of the positioning bolt is provided with an insert rod. Multiple positioning slots are provided on the left side of the T-shaped connecting plate, which are arranged vertically at equal intervals. The insert rod is inserted into one of the positioning slots. The insertion and cooperation between the positioning slot and the insert rod realizes the rapid positioning of the height of the adjusting plate and avoids displacement of the two-code recognition device of the protective cover during the detection process.

[0014] Preferably, a clamping bolt is threadedly connected to the bottom of the rectangular horizontal tube near the left side. The threaded end of the clamping bolt abuts against the bottom of the rectangular horizontal plate. The clamping bolt fixes the horizontal position of the rectangular horizontal plate through friction, ensuring that the distance between the two-code identification device of the protective cover and the gas cylinder protective cover is stable.

[0015] Preferably, the second adjusting component includes a U-shaped plate fixedly connected to the top of the inner wall of the main frame. A lead screw is rotatably connected between the upper and lower sides of the inner wall of the U-shaped plate, near the left side. The bottom end of the lead screw passes through the bottom of the inner wall of the U-shaped plate and is fixedly connected to a knob. A movable plate is threadedly connected to the outer wall of the lead screw. The valve QR code recognition device is bolted to the right end of the bottom of the movable plate. The threaded transmission structure between the lead screw and the movable plate allows the height of the valve QR code recognition device to be adjusted by rotating the knob.

[0016] Preferably, a positioning vertical rod is provided between the upper and lower sides of the inner wall of the U-shaped plate and near the right side. The movable plate is slidably connected to the outside of the positioning vertical rod. The positioning vertical rod restricts the movable plate to move only in the vertical direction, preventing the movable plate from shifting when the screw rotates, and ensuring the positioning accuracy of the valve QR code recognition device.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This cylinder three-code integrated traceability device, through the coordinated work of the protective cover two-code recognition device and the valve QR code recognition device, can simultaneously collect the QR code on the cylinder protective cover, the hollow code, and the QR code on the valve, realizing the integration of the three codes into one data, eliminating the safety hazards caused by the lack of a single traceability code, and ensuring the integrity and traceability of cylinder information.

[0019] 2. The three-code traceability device for steel cylinders uses a first adjusting component and a second adjusting component to adjust the positions of the two-code identification device on the protective cover and the two-code identification device on the valve, respectively. This allows the two-code identification device on the protective cover and the two-code identification device on the valve to be adapted to steel cylinders of different sizes, solving the problem of blind spots caused by differences in steel cylinder models in existing equipment, and improving the versatility and flexibility of the equipment.

[0020] 3. This cylinder three-code integrated traceability device uses a roller conveyor line to continuously transport cylinders via a drive motor, transmission belt, and synchronously rotating conveyor rollers. Combined with the automatic data collection and uploading function of the three-code integrated traceability host, it reduces manual intervention, lowers operational errors, and significantly improves the efficiency of cylinder traceability management. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall first-view structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the overall second-view structure of this utility model;

[0023] Figure 3 This is a partial structural schematic diagram of the roller conveyor line in this utility model;

[0024] Figure 4 This is a schematic diagram of the assembly structure of the first adjusting component and the two-code identification device of the protective cover in this utility model;

[0025] Figure 5 This is a schematic diagram of the assembly structure of the second adjusting component and the valve QR code recognition device in this utility model.

[0026] In the diagram: 1. Roller conveyor line; 10. Support frame; 11. Conveyor roller; 12. Double groove drive wheel; 13. Drive belt; 14. L-shaped mounting plate; 15. Drive motor; 16. Support leg; 2. Main frame; 3. Three-code integrated traceability host; 4. First adjusting component; 40. Strip vertical plate; 41. T-shaped connecting plate; 410. Positioning slot; 42. Adjusting plate; 420. T-shaped connecting groove; 43. Positioning bolt; 430. Insert rod; 44. Rectangular horizontal tube; 45. Rectangular horizontal plate; 46. Clamping bolt; 5. Two-code identification device for protective cover; 6. Second adjusting component; 60. U-shaped plate; 61. Screw; 62. Movable plate; 63. Knob; 64. Positioning vertical rod; 7. Valve QR code identification device. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] Please see Figures 1-5 This utility model provides a technical solution:

[0030] A three-code integrated traceability device for steel cylinders includes a roller conveyor line 1 for conveying steel cylinders. The roller conveyor line 1 includes a support 10, on which multiple conveyor rollers 11 arranged at equal intervals are rotatably connected for conveying steel cylinders. The steel cylinders are placed in the center, ensuring that the QR code and the perforated code on the steel cylinder cover face directly to the right, so that the two codes on the steel cylinder cover can be recognized by the cover two-code recognition device 5. A main frame 2 is provided on the outside of the roller conveyor line 1, and a three-code integrated traceability host 3 is provided on the top of the main frame 2. The three-code integrated traceability host 3 is used to integrate the data collected by the cover two-code recognition device 5 and the valve QR code recognition device 7 and upload them to the cloud management platform.

[0031] The right side of the inner wall of the main frame 2 is provided with a first adjusting component 4, and the first adjusting component 4 is provided with a protective cover two-code recognition device 5. The first adjusting component 4 can adjust the height of the protective cover two-code recognition device 5 and the distance between the protective cover two-code recognition device 5 and the gas cylinder cover, so as to adapt to different models of gas cylinders. The protective cover two-code recognition device 5 reads the QR code and the hollow code of the gas cylinder cover simultaneously through an optical sensor to avoid human operation error.

[0032] A second adjusting component 6 is located at the top of the inner wall of the main frame 2 and near the left side. The second adjusting component 6 is equipped with a valve QR code recognition device 7. The second adjusting component 6 can adjust the height of the valve QR code recognition device 7. The valve QR code recognition device 7 is located directly above the gas cylinder, adapting to different models of gas cylinders, thereby recognizing the valve QR code. The valve QR code recognition device 7 adopts a wide-angle lens design to ensure accurate recognition of the QR code at the gas cylinder valve.

[0033] After the roller conveyor line 1 transports the steel cylinder to the preset position, a scanning action is triggered by the position sensor or the rotation signal of the conveyor roller 11. The protective cover two-code recognition device 5 simultaneously scans the QR code and the hollow code on the steel cylinder protective cover using an optical sensor (such as a camera or laser scanner). The built-in supplementary light of the device ensures clear recognition under different lighting conditions. The valve QR code recognition device 7, located directly above the steel cylinder, scans the QR code on the steel cylinder valve downwards using a wide-angle lens. The three-code integrated traceability host 3 receives the three code data (protective cover QR code and hollow code, valve QR code) uploaded by the protective cover two-code recognition device 5 and the valve QR code recognition device 7 in real time and performs the following processing:

[0034] 1. Data verification: Verify the integrity and consistency of the three codes (e.g., verify whether they are associated codes of the same gas cylinder).

[0035] 2. Information Binding: Bind the three codes to the real-time status of the gas cylinder (such as weight, inspection time, operator) to form a complete data packet;

[0036] 3. Anomaly Handling: If a code is missing or cannot be identified, the traceability host 3 will trigger an alarm and suspend the conveying process, prompting manual intervention;

[0037] 4. The three-code integrated traceability host 3 uploads the integrated data to the cloud management platform via a wireless communication module (such as 4G / 5G or Wi-Fi) to achieve the following functions:

[0038] a. Historical traceability: Users can query the entire life cycle record of the cylinder (production, filling, inspection, maintenance, etc.) through the platform.

[0039] b. Safety warning: After analyzing the data, the platform automatically sends warning information to cylinders that are nearing their inspection deadline or have potential safety hazards.

[0040] c. Access Control: Different levels of personnel (such as operators and administrators) can access data in a tiered manner to ensure information security.

[0041] In this embodiment, each conveying roller 11 has a double-groove drive wheel 12 at the left end of its rotating shaft. Two adjacent double-groove drive wheels 12 are connected by a drive belt 13 to achieve synchronous rotation of multiple conveying rollers 11 and ensure stable conveying of steel cylinders.

[0042] Specifically, an L-shaped mounting plate 14 is provided on the left side of the bracket 10, and a drive motor 15 is provided on the left side of the L-shaped mounting plate 14. It is powered by an external power supply. The output shaft of the drive motor 15 is coaxially connected to the rotating shaft of one of the double-groove transmission wheels 12. The drive motor 15 drives one double-groove transmission wheel 12 to rotate. Multiple double-groove transmission wheels 12 rotate synchronously through a transmission belt 13. The bottom of the bracket 10 is provided with multiple support legs 16 arranged in a matrix. The support legs 16 are fixed to the ground or base with bolts to prevent the roller conveyor line 1 from shaking during operation.

[0043] Furthermore, the first adjusting component 4 includes a strip vertical plate 40 fixedly connected to the right side of the inner wall of the main frame 2. A T-shaped connecting plate 41 is provided on the left side of the strip vertical plate 40, and an adjusting plate 42 that can be adjusted up and down is provided on the outside of the T-shaped connecting plate 41. The strip vertical plate 40 and the T-shaped connecting plate 41 form a vertical guiding structure, which restricts the adjusting plate 42 to move only in the vertical direction. A rectangular horizontal tube 44 is provided at the top left side of the adjusting plate 42, and a rectangular horizontal plate 45 is sleeved inside the rectangular horizontal tube 44. The protective cover two-code identification device 5 is installed on the left side of the rectangular horizontal plate 45 by bolts. The sleeve design of the rectangular horizontal tube 44 and the rectangular horizontal plate 45 allows the protective cover two-code identification device 5 to move horizontally, further adapting to steel cylinders of different diameters.

[0044] Furthermore, a T-shaped connecting groove 420 is provided on the right side of the adjusting plate 42, and the adjusting plate 42 is connected to the outside of the T-shaped connecting plate 41 through the T-shaped connecting groove 420. A positioning bolt 43 is threadedly connected to the left side of the adjusting plate 42 near the bottom. The threaded end of the positioning bolt 43 is provided with a plug rod 430. A plurality of positioning slots 410 arranged vertically and horizontally are provided on the left side of the T-shaped connecting plate 41. The plug rod 430 is inserted into one of the positioning slots 410. The insertion and cooperation of the positioning slot 410 and the plug rod 430 realizes the rapid positioning of the height of the adjusting plate 42, and avoids the displacement of the two-code recognition device 5 of the protective cover during the detection process.

[0045] Furthermore, a clamping bolt 46 is threadedly connected to the bottom of the rectangular horizontal tube 44 near the left side. The threaded end of the clamping bolt 46 abuts against the bottom of the rectangular horizontal plate 45. The clamping bolt 46 fixes the horizontal position of the rectangular horizontal plate 45 by friction, ensuring that the distance between the two-code identification device 5 and the cylinder cover is stable.

[0046] Furthermore, the second adjusting component 6 includes a U-shaped plate 60 fixedly connected to the top of the inner wall of the main frame 2. A lead screw 61 is rotatably connected between the upper and lower sides of the inner wall of the U-shaped plate 60 and near the left side. The bottom end of the lead screw 61 passes through the bottom of the inner wall of the U-shaped plate 60 and is fixedly connected to a knob 63. A movable plate 62 is threadedly connected to the outer wall of the lead screw 61. The valve QR code recognition device 7 is bolted to the right end of the bottom of the movable plate 62. The threaded transmission structure between the lead screw 61 and the movable plate 62 allows the height of the valve QR code recognition device 7 to be adjusted by rotating the knob 63.

[0047] Furthermore, a positioning vertical rod 64 is provided between the upper and lower sides of the inner wall of the U-shaped plate 60 and near the right side. The movable plate 62 is slidably connected to the outside of the positioning vertical rod 64. The positioning vertical rod 64 restricts the movable plate 62 to move only in the vertical direction, preventing the movable plate 62 from shifting when the screw 61 rotates, and ensuring the positioning accuracy of the valve QR code recognition device 7.

[0048] In this embodiment, when using the cylinder three-code integrated traceability device, the operator first moves the protective cover two-code identification device 5 up and down along the T-shaped connecting plate 41 to a suitable height via the adjusting plate 42 of the first adjusting component 4, and then fixes the height by inserting the rod 430 of the positioning bolt 43 into the positioning slot 410 of the T-shaped connecting plate 41. Then, the operator loosens the clamping bolt 46 to adjust the horizontal position of the rectangular horizontal plate 45 within the rectangular horizontal tube 44, so that the optical sensor of the protective cover two-code identification device 5 faces the cylinder protective cover. Simultaneously, the operator rotates the knob 63 of the second adjusting component 6 to drive the lead screw 61 to rotate, causing the movable plate 62 to rise and fall vertically along the positioning vertical rod 64, so that the wide-angle lens of the valve QR code identification device 7 accurately aligns with the QR code on the cylinder valve. Then, the operator places the cylinder in the center on the roller conveyor. On the conveyor rollers 11 of conveyor line 1, the double-groove transmission wheel 12 is driven to rotate by the drive motor 15. The double-groove transmission wheel 12 drives all the conveyor rollers 11 to rotate synchronously through the transmission belt 13, so that the cylinder moves smoothly along the roller conveyor line 1 to the detection area of ​​the main frame 2. When the cylinder reaches the preset position, the protective cover two-code recognition device 5 scans the QR code and the hollow code on the protective cover at the same time, and the valve QR code recognition device 7 scans the QR code on the cylinder valve. The three-code integrated traceability host 3 receives the three types of code data collected by the protective cover two-code recognition device 5 and the valve QR code recognition device 7 in real time, verifies the integrity, binds the cylinder status information and uploads it to the cloud management platform. If data abnormality occurs, an alarm is triggered to suspend the conveying process. After the detection is completed, the cylinder continues to be conveyed by the roller conveyor line 1 to the next process.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A three-code integrated traceability device for steel cylinders, comprising a roller conveyor line (1) for conveying steel cylinders, characterized in that: The roller conveyor line (1) includes a support (10), on which a plurality of conveying rollers (11) are rotatably connected and arranged at equal intervals. A main frame (2) is provided on the outside of the roller conveyor line (1). A three-code integrated traceability host (3) is provided on the top of the main frame (2). A first adjusting member (4) is provided on the right side of the inner wall of the main frame (2). A protective cover two-code recognition device (5) is provided on the first adjusting member (4). A second adjusting member (6) is provided on the top of the inner wall of the main frame (2) and near the left side. A valve two-code recognition device (7) is provided on the second adjusting member (6).

2. The gas cylinder three-code integrated traceability device according to claim 1, characterized in that: Each conveyor roller (11) has a double-groove drive wheel (12) at the left end of its shaft, and two adjacent double-groove drive wheels (12) are connected by a drive belt (13).

3. The gas cylinder three-code integrated traceability device according to claim 2, characterized in that: The bracket (10) has an L-shaped mounting plate (14) on its left side, and a drive motor (15) is provided on the left side of the L-shaped mounting plate (14). The output shaft of the drive motor (15) is coaxially connected to the shaft of one of the double-groove transmission wheels (12). The bottom of the bracket (10) has multiple legs (16) arranged in a matrix.

4. The gas cylinder three-code integrated traceability device according to claim 1, characterized in that: The first adjusting component (4) includes a strip vertical plate (40) fixedly connected to the right side of the inner wall of the main frame (2). A T-shaped connecting plate (41) is provided on the left side of the strip vertical plate (40). An adjusting plate (42) that can be adjusted up and down is provided on the outside of the T-shaped connecting plate (41). A rectangular horizontal tube (44) is provided at the top left side of the adjusting plate (42). A rectangular horizontal plate (45) is sleeved inside the rectangular horizontal tube (44). The two-code identification device (5) of the protective cover is installed on the left side of the rectangular horizontal plate (45) by bolts.

5. The gas cylinder three-code integrated traceability device according to claim 4, characterized in that: The right side of the adjusting plate (42) is provided with a T-shaped connecting groove (420). The adjusting plate (42) is connected to the outside of the T-shaped connecting plate (41) through the T-shaped connecting groove (420). The left side of the adjusting plate (42) and near the bottom is threaded with a positioning bolt (43). The threaded end of the positioning bolt (43) is provided with a plug (430). The left side of the T-shaped connecting plate (41) is provided with multiple positioning slots (410) arranged vertically and vertically at equal intervals. The plug (430) is inserted into one of the positioning slots (410).

6. The gas cylinder three-code integrated traceability device according to claim 4, characterized in that: A clamping bolt (46) is threadedly connected to the bottom of the rectangular horizontal tube (44) and near the left side, and the threaded end of the clamping bolt (46) abuts against the bottom of the rectangular horizontal plate (45).

7. The gas cylinder three-code integrated traceability device according to claim 1, characterized in that: The second adjusting component (6) includes a U-shaped plate (60) fixedly connected to the top of the inner wall of the main frame (2). A lead screw (61) is rotatably connected between the upper and lower sides of the inner wall of the U-shaped plate (60) and near the left side. The bottom end of the lead screw (61) passes through the bottom of the inner wall of the U-shaped plate (60) and is fixedly connected to a knob (63). A movable plate (62) is threadedly connected to the outer wall of the lead screw (61). The valve QR code recognition device (7) is bolted to the right end of the bottom of the movable plate (62).

8. The gas cylinder three-code integrated traceability device according to claim 7, characterized in that: A positioning rod (64) is provided between the upper and lower sides of the inner wall of the U-shaped plate (60) and near the right side. The movable plate (62) is slidably connected to the outside of the positioning rod (64).

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