Equipment capable of realizing horizontal automatic weighing of gas cylinder

Abstract

The invention discloses equipment capable of realizing horizontal automatic weighing of gas cylinders. The equipment comprises a gas cylinder weighing module and a gas cylinder consignment module, the gas cylinder weighing module comprises two bottom columns, two vertical moving blocks, two turntables, a central shaft, a first motor and an electronic balance; the central shaft is connected with the two turntables, one end penetrates through the center of one turntable to be connected with a first motor, and the other end penetrates through the center of the other turntable to be connected with a fixed block; the electronic balance is arranged in the middle of the two bottom columns; two supporting rod mechanisms at corresponding positions on the two turntables are used for supporting the two ends of the gas cylinder groove which is in a horizontal state and is consigned by the gas cylinder consignment module and rotating the two ends of the gas cylinder groove to the position above the electronic balance, and the gas cylinders in the gas cylinder groove are weighed; the gas cylinder consignment module comprises a supporting frame, a moving frame and a gas cylinder frame; a plurality of groove positions are arranged above the top of the gas cylinder frame in parallel at intervals and used for containing gas cylinder grooves. The automatic weighing device can replace manual work to complete automatic weighing operation, and the weighing efficiency is improved on the premise that safety is guaranteed.

Description

Technical Field

[0001] This invention belongs to the technical field of gas cylinder weighing devices, specifically referring to a device that can automatically weigh gas cylinders horizontally. Background Technology

[0002] A gaseous standard reference is a homogeneous mixture of gases stored under high pressure in an aluminum alloy cylinder. The accuracy of its values ​​directly affects the reliability of measurement results in fields such as chemical engineering, medicine, environmental protection, and safety. Its preparation requires quantitatively filling the cylinder with a specific mass of each component gas in a predetermined order. Since the mass of the filled gas is only a fraction of the cylinder's mass, directly weighing before and after filling would result in significant errors. Therefore, the "cross-weighing" method is widely used both domestically and internationally: a cylinder of similar size to the sample cylinder is selected as a reference cylinder, and a high-sensitivity electronic balance is used to alternately weigh the reference cylinder and the sample cylinder to obtain the mass difference. By comparing the change in this mass difference before and after filling, the net mass of the filled gas can be accurately calculated. The cylinder masses of each component gas are then weighed sequentially before and after filling to calculate the molar number of each component gas and convert it to a mole fraction, thereby determining the concentration of each component gas.

[0003] However, current aluminum alloy cylinders used to store gaseous reference materials typically weigh about 10 kg, are slender cylindrical in shape, have a high center of gravity, and a small base area. Operators need to repeatedly pick up and put down the cylinders during weighing, a process that is not only labor-intensive but also poses safety hazards such as cylinder impacts and drops. Furthermore, the high-pressure valve of the cylinder adds an extra eccentric load, requiring manual alignment and anti-rolling measures after each weighing, resulting in a long stabilization time. Since the weighing process usually takes more than half of the total preparation time, it has become one of the key factors affecting the efficiency of gaseous reference material preparation.

[0004] Currently, the weighing of gaseous standard substances still relies mainly on manual operation, which is cumbersome and inefficient. The specific steps are as follows: Before filling the gas, a reference gas cylinder of the same specifications as the sample cylinder must be selected and its mass recorded on an electronic balance. Then, the sample gas cylinder is weighed using the same electronic balance, and its mass is recorded. This process needs to be repeated multiple times to obtain the average mass of the reference and sample cylinders, thus calculating the mass difference between them. After filling the gas, the above process must be repeated again to obtain another set of mass differences. The difference between the two values ​​is the mass of the filled gas. Therefore, to obtain the mass of a single filling, the gas cylinder needs to be weighed at least ten times. Furthermore, the cylindrical shape of the gas cylinder results in a high center of gravity, requiring a long time to stabilize on the balance. Frequent weighing can also cause collisions between the gas cylinder and the electronic balance, leading to reading drift or even damage. Manual reading, recording, and calculation are also prone to introducing random errors, resulting in low overall accuracy and high labor intensity, making it difficult to meet the growing demand for batch preparation of standard gases.

[0005] Currently, some institutions have adopted automated weighing methods for gas cylinders. The basic method involves placing a reference gas cylinder and a sample gas cylinder on a disc. An electronic balance is positioned below a cutout on the disc. By slowly rotating the disc and precisely controlling its rise and fall, the reference and sample gas cylinders can be weighed alternately on the electronic balance. Throughout the process, the gas cylinders remain upright. Because cylindrical gas cylinders have a high center of gravity and poor stability, the disc must rotate extremely slowly; otherwise, there is a risk of the cylinders tipping over. Therefore, such automated weighing devices take much longer than manual weighing. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide an automatic weighing device for gas cylinders that can replace manual weighing and improve weighing efficiency while ensuring safety.

[0007] This invention is implemented as follows: An automatic horizontal weighing device for gas cylinders includes: a gas cylinder weighing module and a gas cylinder transport module; The gas cylinder weighing module includes: two base columns, two vertical moving blocks, two turntables, a central shaft, a first motor, and an electronic balance. The central shaft connects the two turntables, with one end passing through the center of one of the turntables and connecting to the first motor, and the other end passing through the center of the other turntable and connecting to a fixed block. The bottom of the fixed block and the first motor are respectively fixedly connected to a vertical moving block, and each vertical moving block slides up and down within one of the base columns via a driving mechanism. The electronic balance is located between the two base columns, and its display panel is located on the outer side of one of the base columns. The electronic balance and the display panel are connected by a circuit. Each turntable has multiple evenly spaced support rod mechanisms. Two support rod mechanisms at corresponding positions on the two turntables lift and rotate the two ends of the horizontal gas cylinder tray brought by the gas cylinder transport module to above the electronic balance, and weigh the gas cylinders in the gas cylinder tray. The gas cylinder transport module includes: a support frame, a movable frame, and a gas cylinder rack; a second motor is provided at the middle of the top end of the support frame, and the output shaft of the second motor extends longitudinally along the support frame to the top end of the support frame; a fixed guide rod is provided on each side of the support frame on both sides of the output shaft, parallel to the output shaft; two grooved tracks are provided at the bottom of the support frame, parallel to the fixed guide rods; the bottom of the movable frame is located on the grooved tracks, and the middle part of the movable frame is respectively fitted onto the output shaft and the two fixed guide rods; a lifting column is provided on the upper part of each side of the movable frame, and a support block is fixedly connected to the top of each lifting column; the gas cylinder rack is located in the middle of the support frame, and its top is located above the output shaft; multiple slots are provided at intervals and parallel above the top of the gas cylinder rack for placing gas cylinders.

[0008] Furthermore, the drive mechanism includes: a third motor; Each of the base columns is provided with a base, one of the base columns is provided with the third motor, and the other base column is provided with a rotating shaft. The third motor is connected to the rotating shaft through a first track. The rotating shaft and the third motor are respectively connected to the rollers in the corresponding base column through a second track, so as to drive the vertical moving block in the base column to slide up and down.

[0009] Furthermore, each of the aforementioned support rod mechanisms includes: a fixed rod, a connecting block, and a hanging rod; one end of the fixed rod is fixedly connected to the turntable, the upper part of the connecting block has a through hole and is fitted onto the fixed rod, and the other end of the fixed rod is provided with a stop to prevent the connecting block from sliding out; the lower part of the connecting block is fixedly connected to the hanging rod parallel to the fixed rod, which is used to hang the gas cylinder slot, and the length of the hanging rod is longer than that of the fixed rod.

[0010] Furthermore, the gas cylinder slot includes: a slot cover portion and a slot base portion; the slot base portion is an arc-shaped groove adapted to the shape of the gas cylinder, and its middle part is a hollow structure; the slot cover portion is arc-shaped, and there are two of them, which are respectively located at both ends of the slot base portion and extend outward.

[0011] Furthermore, the support frame of the gas cylinder transport module is provided with a foldable first connecting plate on each side of its bottom end, and the two bottom columns of the gas cylinder weighing module are each provided with a second connecting plate; the first connecting plate is provided with a hollow structure that matches the second connecting plate. When the gas cylinder weighing module and the gas cylinder transport module are correctly placed in the designated position, the first connecting plate can be horizontally fastened to the second connecting plate to prevent the two modules from being misaligned during operation.

[0012] The advantages of this invention are: by placing the gas cylinder horizontally to achieve automatic weighing, it replaces the traditional vertical weighing method, which solves the problems of long time consumption and easy tipping, effectively reduces the risk of gas cylinder rolling and collisions with the valve and body, and provides operators with a more efficient, accurate and safe weighing solution. Attached Figure Description

[0013] The present invention will now be further described with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 This is a schematic diagram of the gas weighing module structure in this invention.

[0016] Figure 3 This is a schematic diagram of the gas cylinder transport module in this invention.

[0017] Figure 4 yes Figure 2 A schematic diagram of the gas cylinder weighing mechanism.

[0018] Figure 5 yes Figure 3 A schematic diagram of the explosion structure.

[0019] Figure 6 This is a schematic diagram showing the state of the gas cylinder placed on the mobile frame according to the present invention.

[0020] Figure 7 yes Figure 6 A schematic diagram of the explosion structure.

[0021] Figure label: Gas cylinder weighing module, 200-Gas cylinder transport module, 101-Base column, 102-Vertical moving block, 103-Turntable, 104-Central shaft, 105-First motor, 106-Electronic balance, 1061-Weighing auxiliary block, 107-Fixing block, 108-Display panel, 109-Wires, 110-Supporting rod mechanism, 1101-Fixing rod, 1102-Connecting block, 1103-Hanging rod, 111-Third motor, 112-Base, 113-Rotating shaft, 11 4-First track, 115-Second track, 116-Second connecting plate, 117-Control panel, 201-Support frame, 202-Moving frame, 203-Gas cylinder rack, 204-Second motor, 205-Output shaft, 206-Fixed guide rod, 207-Groove track, 208-Lifting column, 2081-Support block, 209-Slot, 210-Gas cylinder slot, 2101-Slot cover, 2102-Slot seat, 2103-Hollowed structure, 211-First connecting plate. Detailed Implementation

[0022] like Figures 1 to 7 As shown, an automatic horizontal weighing device for gas cylinders includes: a gas cylinder weighing module 100 and a gas cylinder transport module 200. The gas cylinder weighing module 100 includes: two base columns 101, two vertical moving blocks 102, two turntables 103, a central shaft 104, a first motor 105, and an electronic balance 106. The two ends of the central shaft 104 are respectively connected to a turntable 103. One end passes through the center of one turntable 103 and connects to the first motor 105, while the other end passes through the center of the other turntable 103 and connects to a fixed block 107. A vertical moving block 102 is fixedly connected to the bottom of the fixed block 107 and the first motor 105. Each vertical moving block 102 is located within a base column 101 and is driven by a... The mechanism slides up and down; the electronic balance 106 is located between the two base columns 101, and its display panel 108 is located on the outer side of one of the base columns 101. The electronic balance 106 and the display panel 108 are connected by a line 109; four support rod mechanisms 110 are evenly spaced on each turntable 103. The two support rod mechanisms 110 at corresponding positions on the two turntables 103 lift up both ends of the gas cylinder slot 210 for holding the horizontal gas cylinder A brought by the gas cylinder transport module 200, and rotate it onto the electronic balance 106 so that the gas cylinder A is weighed on the electronic balance 106; The gas cylinder transport module 200 includes: a support frame 201, a movable frame 202, and a gas cylinder rack 203; a second motor 204 is provided at the middle of the top end of the support frame 201, and the output shaft 205 of the second motor 204 extends longitudinally along the support frame 201 to the top end of the support frame 201; a fixed guide rod 206 is provided on each side of the support frame 201 on both sides of the output shaft 205, parallel to the output shaft 205; two grooved rails 207 are provided at the bottom of the support frame 201, parallel to the fixed guide rods 206. The bottom of the movable frame 202 is located on the grooved track 207, and the middle part of the movable frame 202 is respectively sleeved on the output shaft 205 and two fixed guide rods 206; a lifting column 208 is respectively provided on the upper part of both sides of the movable frame 202, and a support block 2081 is fixedly connected to the top of each lifting column 208; the gas cylinder rack 203 is located in the middle of the support frame 201, and its top is located above the output shaft 205. Multiple slots 209 are provided parallel to each other on the top of the gas cylinder rack 203 for placing gas cylinder slots 210.

[0023] The driving mechanism of the vertical moving block 102 includes: a third motor 111; a base 112 is provided below each base column 101, a third motor 111 is provided on one base 112, and a rotating shaft 113 is provided on the other base 112. The third motor 111 is connected to the rotating shaft 113 through a first track 114. The rotating shaft 113 and the third motor 111 are respectively connected to the rollers (not shown) in the corresponding base column 101 through a second track 115 to drive the vertical moving block 102 in the base column 101 to slide up and down.

[0024] Each support rod mechanism 110 includes: a fixed rod 1101, a connecting block 1102, and a hanging rod 1103; one end of the fixed rod 1101 is fixedly connected to the turntable 103, the upper part of the connecting block 1102 has a through hole and is sleeved on the fixed rod 1101, and the other end of the fixed rod 1101 is provided with a stop 1104 to prevent the connecting block 1102 from slipping out; the lower part of the connecting block 1102 is fixedly connected to a hanging rod 1103 parallel to the fixed rod 1101, which is used to hang the gas cylinder tank 210, and the length of the hanging rod 1103 is longer than that of the fixed rod 1101.

[0025] The gas cylinder slot 210 includes: a slot cover portion 2101 and a slot base portion 2102; the slot base portion 2102 is an arc-shaped groove adapted to the shape of the gas cylinder A, and the middle part is a hollow structure 2103; the slot cover portion 2101 is arc-shaped, there are two of them, and they are respectively located at both ends of the slot base portion 2102 and extend outward.

[0026] The support frame 201 in the gas cylinder transport module 200 has a foldable first connecting plate 211 on each side of its bottom end. The two bottom columns 101 of the gas cylinder weighing module 100 each have a second connecting plate 116. The second connecting plate 116 has a protrusion, and the first connecting plate 211 has a hollow structure that matches the protrusion of the second connecting plate 116. When the gas cylinder weighing module 100 and the gas cylinder transport module 200 are correctly placed in the designated position, the first connecting plate 211 can be horizontally fastened to the second connecting plate 116 to prevent the two modules from being misaligned during operation.

[0027] Work process: The procedure for placing the gas cylinder onto the gas cylinder weighing module 100 is as follows: When weighing gas cylinders is required, initially, all gas cylinder slots 210 are stably placed within slots 209. The gas cylinder to be weighed is then placed into a gas cylinder slot 210. This embodiment has four gas cylinder slots 210, thus accommodating one reference gas cylinder and several sample gas cylinders (1-3 in number). For ease of description, the four gas cylinders are labeled as Gas Cylinder A, Gas Cylinder B, Gas C, and Gas D. The corresponding gas cylinder slots 210 are labeled, from closest to furthest from the second motor 204, as Gas Cylinder Slot 210A, Gas Cylinder Slot 210B, Gas Cylinder Slot 210C, and Gas Cylinder Slot 210D. The slots 209 are labeled as Slot 209A, Slot 209B, Slot 209C, and Slot 209D.

[0028] The operation is performed via the control panel 117 located on the side of the base column 101. In the initial state, the support rod mechanism 110 on the gas cylinder weighing module 100 is located at the highest point, lowest point, and both extreme positions of the turntable 103, and the height of the vertical moving block 102 is set to A2 (middle position). The moving frame 202 is located closest to the second motor 204, and the height of the lifting column 208 is set to B1 (low position).

[0029] At this point, select the gas cylinder to be transferred via control panel 117, such as gas cylinder A, gas cylinder B, gas cylinder C, or gas cylinder D. Then, start the operation with one key via panel 117. The second motor 204 will then start, driving the moving frame 202 to move directly below the gas cylinder slot 209A. The lifting column 208 will then rise, and during this rise, the support blocks 2081 will lift both ends of the slot base 2102, causing the bottom of the gas cylinder slot 210A to move away from the slot 209A. The lifting column 208 will stop when it reaches the B2 position (middle position). In this state, the bottom of the gas cylinder slot 210A is higher than the other gas cylinder slots 210B, 210C, and 210D.

[0030] The second motor 204 then restarts, driving the moving frame 202 towards the gas cylinder weighing module 100. During the movement, the gas cylinder slot 210A remains parallel to the central axis 104. When it reaches its limit position, the second motor 204 stops, at which point the slot cover 2101 at both ends of the gas cylinder slot 210A is directly above a pair of hanging rods 1103. The third motor 111 is then started, driving the vertical moving block 102 upwards. During the upward movement, the hanging rods 1103 gradually lift the slot cover 2101, causing the bottom of the slot seat 2102 of the gas cylinder slot 210A to detach from the support block 2081. The vertical moving block 102 stops when it reaches position A3 (high position).

[0031] At the same time, the second motor 204 also starts, driving the moving frame 202 to a position close to the second motor 204, reaching its limit position. At this point, the lifting column 208 begins to descend to the B1 position (low position) and stops. During this process, the first motor 105 starts synchronously and drives the turntable 103 to rotate 90°, at which point the gas cylinder tank 210A rotates to the highest position of the turntable 103. Then, the third motor 111 starts, driving the vertical moving block 102 back to the A2 position (middle position).

[0032] Then, following the above procedure, the remaining three gas cylinder tanks are sequentially mounted onto the remaining three sets of support rod mechanisms 110; for ease of description, they are named support rod mechanism 110A, support rod mechanism 110B, support rod mechanism 110C, and support rod mechanism 110D respectively.

[0033] The weighing procedure for gas cylinders is as follows: After all the gas cylinder slots are mounted on the support mechanism, the first motor 105 is started to rotate the turntable 103, so that the gas cylinder slot 6A is at the lowest point of the turntable 103. Then, the third motor 111 is started to drive the vertical moving block 102 downward. During the descent, the weighing auxiliary block 1061 passes through the hollow structure 2103 and lifts the gas cylinder A from the gas cylinder slot 210A. After the height of the vertical moving block 102 drops to the A1 position (low position) and stops, the gas cylinder A is independently supported by the weighing auxiliary block 1061, and the gas cylinder slot 210A is completely separated from the gas cylinder A. After standing still for a period of time (about 5-10 seconds), the mass weighed by the electronic balance 106 is the total mass of the gas cylinder A and the weighing auxiliary block 1061, and the result is directly displayed on the display panel 108.

[0034] After weighing, the third motor 111 drives the vertical moving block 102 to rise. During the rising process, the weighing auxiliary block 1061 begins to detach from gas cylinder A, and the gas cylinder slot 210A lifts gas cylinder A again. After the height of the vertical moving block 102 rises to the A2 position (middle position), the third motor 111 stops. The first motor 105 starts, and as the turntable 103 rotates, the gas cylinder slot 210A moves away from the lowest point of the turntable 103, and the gas cylinder slot 210B begins to move to the lowest point of the turntable 103. Since gas cylinder B is inside the gas cylinder slot 210B, the aforementioned descent-weighing-rising process is repeated. During this process, the electronic balance 106 weighs the total mass of gas cylinder B and the weighing auxiliary block 1061, and displays the result directly on the display panel 108.

[0035] If all gas cylinders need to be weighed, they can be weighed in the order of cylinder A—cylinder B—cylinder C—cylinder D. The number of repetitions can be entered on control panel 117. The average weighing value for each cylinder is m. A m B m C and m DSince cylinder A is the reference cylinder, and cylinders B, C, and D are the sample cylinders, three weighing differences can be obtained: Δm B0 =m B —m A , △m C0 =m C —m A and △m D0 =m D —m A These three weighing differences can be displayed on the balance display panel 108.

[0036] The process for moving the gas cylinder to the gas cylinder transport module 200 is as follows: After all gas cylinders have been weighed, the gas cylinder slots that need to be returned to their positions can be selected via the control panel 117, such as gas cylinder slots 210B, 210C, and 210D.

[0037] Start the first motor 105 to rotate the turntable 103 so that the gas cylinder slot 210B is on the side close to the gas cylinder transport module 200. Then, start the second motor 204 to drive the moving frame 202 to move towards the gas cylinder weighing module 100. At this time, the gas cylinder slot 210B is directly above the support block 2081. As the lifting column 208 continues to rise, the support block 2081 lifts the slot seat 2102, and the slot cover 2101 is disengaged from the hanging rod 1103. When the lifting column 208 rises to the height of B3 (high position) and stops, the second motor 204 moves the moving frame 202 to the position directly above the slot 209B. Then, the lifting column 208 is lowered so that the gas cylinder slot 210B lands smoothly on the slot 209B. When the lifting column 208 descends to the height of B1 (low position) and stops, the support block 2081 is completely separated from the slot seat 2102, and the gas cylinder slot 210B is independently supported by the slot position 2091B.

[0038] After the above process is completed, the first motor 105 starts to rotate the turntable 103, so that the gas cylinder slot 210C is on the side close to the gas cylinder transport module 200. Repeat the above steps so that the gas cylinder slot 210C is placed on the slot 209C. Similarly, the gas cylinder slot 210D is also placed on the slot 209D through the above steps.

[0039] The gas cylinder was weighed again: After weighing all sample gas cylinders (cylinder B, cylinder C, and cylinder D), cylinders B, C, and D can be removed from cylinder slots 210B, 210C, and 210D, respectively. Then, the cylinders are filled with gas. After filling, the cylinders are returned to their corresponding slots one by one. Following these steps, the average weighing values ​​of cylinders A, B, C, and D are obtained again. Similarly, another set of weighing differences can be obtained: Δm B1 =mB —m A , △m C1 =m C —m A and △m D1 =m D —m A Therefore, the masses of the component gases filled into gas cylinders B, C, and D are respectively M B1 =△m B1 —△m B0 M C1 =△m C1 —△m C0 and M D1 =△m D1 —△m D0 Meanwhile, M B1 M C1 and M D1 The quality can also be obtained from the balance display panel 108.

[0040] If multiple gas groups need to be filled, the above steps can be followed to obtain the gas mass of different components filled into the gas cylinder.

[0041] The gas cylinders in cylinder tank 210A are not limited to reference cylinders. If multiple cylinders are to be filled, reference cylinders and sample cylinders can be specified on the control panel 117. For example, the cylinders in cylinder tank 210B can be specified as reference cylinders, and the cylinders in the other cylinder tanks (210A, 210C, 210D) can be specified as sample cylinders. Then, the automatic alternating weighing operation is performed according to the above process.

[0042] If only one gas cylinder is being filled, a reference gas cylinder and a sample gas cylinder can be specified on the control panel 117. For example, the gas cylinder in the gas cylinder tank 210C can be specified as the reference gas cylinder and the gas cylinder in the gas cylinder tank 210D as the sample gas cylinder. Then, the automatic alternating weighing operation is performed according to the above process.

[0043] This invention achieves automatic weighing by placing gas cylinders horizontally, replacing the traditional vertical weighing method. This solves the problems of long weighing time and easy tipping, effectively reducing the risk of gas cylinders rolling off and collisions with valves and cylinder bodies, and providing operators with a more efficient, accurate and safe weighing solution.

[0044] The above embodiments and figures are not intended to limit the product form and style of the present invention. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of the present invention.

Claims

1. A device capable of automatic weighing of a gas cylinder horizontally, characterized in that: The utility model relates to a gas cylinder weighing and transporting device, which comprises a gas cylinder weighing module and a gas cylinder transporting module. The gas cylinder weighing module comprises two bottom columns, two vertical moving blocks, two rotating discs, a central shaft, a first motor and an electronic balance. The central shaft is connected to the two rotating discs, with one end passing through the center of one of the rotating discs to connect the first motor and the other end passing through the center of the other rotating disc to connect a fixed block. The bottom of the fixed block and the first motor is respectively fixedly connected to one of the vertical moving blocks, and each vertical moving block slides up and down in one of the bottom columns through a driving mechanism.

2. The automatic gas cylinder level weighing device according to claim 1, wherein: The electronic balance is arranged at a position between the two bottom columns, with its display panel arranged on the outer side of one of the bottom columns. The electronic balance and the display panel are connected through a circuit.

3. The automatic gas cylinder level weighing device according to claim 1, wherein: Each rotating disc is uniformly provided with a plurality of supporting rod mechanisms.

4. The automatic gas cylinder level weighing device according to claim 1, wherein: The two supporting rod mechanisms at the corresponding positions of the two rotating discs lift and rotate the two ends of the horizontal gas cylinder tank transported by the gas cylinder transporting module to the upper side of the electronic balance to weigh the gas cylinder in the gas cylinder tank. The gas cylinder transporting module comprises a supporting frame, a moving frame and a gas cylinder frame. The top of the supporting frame is provided with a second motor in the middle of the first end. The output shaft of the second motor extends along the longitudinal direction of the supporting frame to the top of the second end of the supporting frame. The supporting frame on the two sides of the output shaft is respectively provided with a fixed guide rod parallel to the output shaft. The bottom of the supporting frame is provided with two groove tracks parallel to the fixed guide rods. The bottom of the moving frame is located on the groove tracks, and the middle part of the moving frame is respectively sleeved on the output shaft and the two fixed guide rods. The two sides of the moving frame are respectively provided with a lifting column, and the top of each lifting column is fixedly connected to a supporting block. The gas cylinder frame is located in the middle of the supporting frame, with its top located above the output shaft. The top of the gas cylinder frame is provided with a plurality of groove positions in parallel and at intervals for placing gas cylinder tanks. The driving mechanism comprises a third motor. Each bottom column is provided with a base, one of the bases is provided with the third motor, and the other base is provided with a rotating shaft. The third motor is connected to the rotating shaft through a first track. The rotating shaft and the third motor are respectively connected to the rollers in the corresponding bottom columns through a second track to drive the vertical moving blocks in the bottom columns to slide up and down. Each supporting rod mechanism comprises a fixed rod, a connecting block and a hanging rod. One end of the fixed rod is fixedly connected to the rotating disc. The upper part of the connecting block is provided with a through hole sleeved on the fixed rod. The other end of the fixed rod is provided with a stopper to prevent the connecting block from sliding out. The lower part of the connecting block is fixedly connected to the hanging rod parallel to the fixed rod to hang the gas cylinder tank. The gas cylinder tank comprises a cover part and a seat part. The seat part is an arc-shaped groove matched with the shape of the gas cylinder, with a hollow structure in the middle. The cover part is arc-shaped and has two, extending outward from the two ends of the seat part.

5. The automatic gas cylinder level weighing device according to claim 1, wherein: The tail end bottom of the support frame in the gas cylinder shipping module is provided with a first foldable connecting plate on each side, and the two bottom columns of the gas cylinder weighing module are each provided with a second connecting plate; the first connecting plate is provided with a hollow structure matched with the second connecting plate, and when the gas cylinder weighing module and the gas cylinder shipping module are correctly placed at the specified positions, the first connecting plate can be horizontally buckled on the second connecting plate to prevent dislocation of the two modules during operation.

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