Gas cylinder filling transition device

Abstract

This utility model relates to a gas cylinder filling transition device, comprising: a channel for gas cylinder entry and exit formed on one side of the device body; a support assembly including a support base plate disposed at the bottom of the device body, a first turntable rotatably supported on the support base plate, a second turntable rotatably supported on the first turntable, a support plate disposed on the second turntable, a first drive mechanism disposed on the support base plate and connected to the first turntable, a second drive mechanism disposed on the first turntable and connected to the second turntable, and a plurality of clamping mechanisms disposed on the first turntable and connected to the second turntable; a clamping space is formed between the plurality of clamping mechanisms; the second drive mechanism is used to drive the second turntable to rotate relative to the first turntable to drive the plurality of clamping mechanisms to move synchronously to adjust the size of the clamping space and clamp the gas cylinder on the support plate through the clamping mechanisms; the first drive mechanism is used to drive the first turntable to rotate relative to the support base plate. This utility model can adapt to various gas cylinder specifications.

Description

Technical Field

[0001] This utility model relates to the field of pressure vessel transfer technology, and in particular to a gas cylinder filling transition device. Background Technology

[0002] In modern industrial production, special gases such as oxygen, nitrogen, hydrogen, and acetylene are widely used in various production processes. For example, oxygen is used in metal cutting and welding to increase combustion and temperature; nitrogen is used in chemical synthesis to create an inert environment; and acetylene is a commonly used welding and cutting gas in metal processing. These gases typically require gas cylinders and are compressed and stored using high-pressure technology to increase gas storage capacity, meet the needs of large-scale industrial production, and reduce transportation and storage costs. During the filling and storage of gas cylinders, transition devices are crucial tools for ensuring the safe and stable storage of these cylinders. Existing transition devices lack versatility, often only adapting to specific types or sizes of cylinders. For example, a gas cylinder transfer device disclosed in Chinese Utility Model Patent (CN217415802U), while its movable frame can be adjusted to accommodate cylinders of different lengths, may not be effective for cylinders with significantly different diameters. For instance, the diameter difference between small and large cylinders means the frame cannot simultaneously meet the fixing requirements of cylinders of different diameters. When industrial production requires the use of multiple cylinder specifications, multiple different transition devices are needed, undoubtedly increasing equipment procurement costs and management complexity for enterprises. Some transition devices also lack sufficient consideration for cylinder stability in their design, even posing certain safety hazards.

[0003] Given the shortcomings of the existing technology, it is urgent to develop a new type of gas cylinder transfer device. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model discloses a gas cylinder filling transition device, which has the advantages of adapting to gas cylinders of different specifications, achieving multi-dimensional adjustment, stable clamping, and avoiding damage to the gas cylinder.

[0005] The technical solution adopted in this utility model is as follows: A gas cylinder filling transition device, comprising: The main body of the device includes a base and a frame disposed on the base; the frame has a channel for the gas cylinder to enter and exit the frame on at least one side; The support assembly includes a support base plate disposed at the bottom of the frame, a first turntable rotatably supported on the support base plate, a second turntable rotatably supported on the first turntable, a support plate disposed on the second turntable, a first drive mechanism disposed on the support base plate and connected to the first turntable, a second drive mechanism disposed on the first turntable and connected to the second turntable, and a plurality of clamping mechanisms disposed on the first turntable and connected to the second turntable; a clamping space is formed between the plurality of clamping mechanisms. The second driving mechanism is used to drive the second turntable to rotate relative to the first turntable, so as to drive the multiple clamping mechanisms to move synchronously to adjust the size of the clamping space; the first driving mechanism is used to drive the first turntable to rotate relative to the supporting base plate.

[0006] In one embodiment of the present invention, the first driving mechanism includes a first support rotatably mounted on the supporting base plate, a first motor horizontally mounted on the first support, a second support mounted on the first turntable, a lead screw nut mounted on the second support, and a drive lead screw with the lead screw nut threadedly engaged and one end connected to the output end of the first motor.

[0007] In one embodiment of the present invention, the second driving mechanism includes a third support fixed to the supporting base plate and a first cylinder rotatably mounted on the first turntable via the third support; the other end of the first cylinder is hinged to the second turntable.

[0008] In one embodiment of the present invention, a plurality of the clamping mechanisms are arranged circumferentially along the first turntable or the second turntable.

[0009] In one embodiment of this utility model, the clamping mechanism includes a movable base that moves radially along the first turntable, a guide wheel disposed at the inner end of the movable base along the radial direction of the first turntable, a clamping support disposed at the outer end of the movable base along the radial direction of the first turntable, and a clamping block disposed on the inner side of the top of the clamping support; the second turntable has an equal number of arc-shaped guide grooves as the clamping mechanism; the arc-shaped guide grooves extend arc-shapedly from a position near the edge of the second turntable towards a position near the center of the second turntable; the guide wheel is located in the arc-shaped guide groove and can roll along the arc-shaped guide groove.

[0010] In one embodiment of the present invention, the clamping mechanism further includes a clamping slide rail disposed radially on the first turntable along the first turntable, and a clamping slider slidably connected to the clamping slide rail; a movable base is mounted on the clamping slider.

[0011] In one embodiment of the present invention, a limiting component is further included on the frame; the limiting component is configured to limit the gas cylinder from a position higher than the center of gravity of the gas cylinder.

[0012] In one embodiment of the present invention, the limiting component includes a first limiting mechanism; the first limiting mechanism includes a first mounting plate fixedly installed on the frame and disposed relative to the channel, two roller supports mirror-disposed on the first mounting plate, and a first roller disposed on the roller supports.

[0013] In one embodiment of the present invention, the limiting component further includes two sets of second limiting mechanisms mirroring the first limiting mechanism; the second limiting mechanism includes a second mounting plate fixedly mounted on the frame, a limiting slide rail disposed on the second mounting plate, a movable seat slidably connected to the limiting slide rail, a rocker arm with one end hinged to the second mounting plate, a second roller rotatably mounted on the other end of the rocker arm, a connecting rod with both ends respectively hinged to the movable seat and the rocker arm, and a second cylinder mounted on the second mounting plate with its actuating end connected to the movable seat.

[0014] In one embodiment of this utility model, a plurality of pressure sensors are also provided on the frame and the base.

[0015] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art: The gas cylinder filling transition device of this utility model achieves stable clamping, multi-angle adjustment, and adaptability to different specifications of gas cylinders during the filling process through the coordinated action of the multi-stage rotating structure of the support component and the drive mechanism, combined with the double fixation of the clamping mechanism and the limiting component. It has the advantages of strong adaptability, safe operation and high efficiency. Attached Figure Description

[0016] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the gas cylinder filling transition device.

[0018] Figure 2 This is a structural schematic diagram of the support assembly.

[0019] Figure 3 This is a structural schematic diagram of the support assembly (the support plate and base plate are not shown).

[0020] Figure 4 yes Figure 3 Side view.

[0021] Figure 5 This is a schematic diagram of the limit component.

[0022] Figure 6 This is a top view of the limiting component.

[0023] Explanation of reference numerals on the accompanying drawings: 10. Main body of the device; 11. Base; 111. Anchor bolts; 12. Frame; 20. Support assembly; 21. Support base plate; 22. First turntable; 23. Second turntable; 231. Arc-shaped guide groove; 24. Support plate; 25. First drive mechanism; 251. First support; 252. First motor; 253. Drive screw; 254. Second support; 255. Screw nut; 26. Second drive mechanism; 261. Third support; 262. First cylinder; 263. Hinge pin; 27. Clamping mechanism; 271. Clamping slide rail; 272. Clamping slider; 273. Moving base; 274. Guide wheel; 275. Clamping support; 276. Clamping block; 277. Clamping pad; 28. First rotary support; 29. ​​Second rotary support; 30. Gas cylinders; 40. Limiting component; 41. First limiting mechanism; 411. First mounting plate; 412. Roller support; 413. First roller; 42. Second limiting mechanism; 421. Second mounting plate; 422. Limiting slide rail; 423. Movable seat; 424. Rocker arm; 425. Second roller; 426. Connecting rod; 427. Second cylinder. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0025] The foregoing and other technical contents, features, and effects of this utility model will be clearly presented in the following detailed description of the embodiments with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as up, down, left, right, front, or back, are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for illustrative purposes and not for limiting the present utility model. Furthermore, in all embodiments, the same reference numerals denote the same elements.

[0026] Existing gas cylinder transition devices generally suffer from insufficient versatility, making it difficult to adapt to gas cylinders of different diameters. Traditional devices typically employ fixed-size clamping structures, which cannot effectively adjust the clamping distance when the cylinder diameter changes, leading to unstable cylinder fixation. For example, in metal processing workshops, operators need to frequently switch between oxygen and acetylene cylinders, but existing devices cannot simultaneously hold cylinders with significantly different diameters, posing a risk of tipping. Furthermore, the single-dimensional positioning method makes it difficult to adjust the cylinder angle during filling operations, affecting filling efficiency.

[0027] To address the aforementioned issues, this embodiment provides a gas cylinder filling transition device.

[0028] like Figure 1 As shown, a gas cylinder filling transition device includes a device body 10 and a clamping support assembly 20.

[0029] The main body 10 of the device includes a base 11 and a frame 12 mounted on the base 11. The base 11 is equipped with anchor bolts 111 for leveling. The frame 12 is mounted on the base 11 and has a channel for the gas cylinder 30 to enter and exit the frame 12 on at least one side. The frame 12 and the base 11 are the main support structures of the gas cylinder transfer device, and can be implemented using a combination of a metal frame and a composite base.

[0030] Combination Figure 2 The support assembly 20 includes a support base plate 21 at the bottom of the frame 12, a first turntable 22 rotatably supported on the support base plate 21, a second turntable 23 rotatably supported on the first turntable 22, a support plate 24 on the second turntable 23, a first drive mechanism 25 on the support base plate 21 and connected to the first turntable 22, a second drive mechanism 26 on the first turntable 22 and connected to the second turntable 23, and multiple clamping mechanisms 27 on the first turntable 22 and connected to the second turntable 23. The second drive mechanism 26 drives the second turntable 23 to rotate relative to the first turntable 22 and clamps the gas cylinder 30 on the support plate 24 through the clamping mechanisms 27. The first drive mechanism 25 drives the first turntable 22 to rotate relative to the support base plate 21 to adjust the orientation of the gas cylinder 30 on the support plate 24.

[0031] Combination Figure 3 and Figure 4The first turntable 22 is rotatably mounted on the support base plate 21 via the first slewing support 28. The second turntable 23 is rotatably mounted on the first turntable 22 via the second slewing support 29. A slewing support refers to a connection method between two components that allows relative rotation around an axis. Specifically, it can be implemented using crossed roller bearings or slewing bearings, allowing the first turntable 22 and the second turntable 23 to rotate freely in a plane. The first slewing support 28 and the second slewing support 29 can be implemented by setting a slewing base and a slewing bearing.

[0032] The first drive mechanism 25 includes a first support 251, a first motor 252, a drive screw 253, a second support 254, and a screw nut 255. The first motor 252 is rotatably mounted on the support base 21 via the first support 251. The screw nut 255 is mounted on the first turntable 22 via the second support 254. The drive screw 253 is connected to the output end of the first motor 252. The drive screw 253 and the screw nut 255 are threadedly engaged. The first motor 252 drives the drive screw 253 to rotate, thereby causing the screw nut 255 to move axially along the drive screw 253, which in turn drives the first turntable 22 to rotate.

[0033] When the first motor 252 starts, its output shaft drives the drive screw 253 to rotate. Since the screw nut 255 is restricted to the second support 254 and cannot rotate, the threaded engagement forces the screw nut 255 to move along the axis of the drive screw 253. This linear displacement is transmitted to the first turntable 22 through the second support 254, transforming it into rotational motion of the first turntable 22 around the central axis of the support base plate 21. The rolling bearing structure of the first support 251 allows the first motor 252 to produce a small angular deflection when transmitting torque, eliminating the influence of installation errors on transmission accuracy. The rigid connection between the second support 254 and the first turntable 22 ensures the stability of the power transmission path and prevents motion deviations caused by structural deformation.

[0034] The second drive mechanism 26 includes a third support 261, a first cylinder 262, and a hinge pin 263. One end of the first cylinder 262 is rotatably mounted on the first turntable 22 via the third support 261. The other end of the first cylinder 262 is hinged to the second turntable 23 via the hinge pin 263. Therefore, the extension and retraction of the first cylinder 262 can drive the second turntable 23 to rotate.

[0035] Specifically, the third support 261 is fixed to the support base plate 21 to form a rigid support, and the cylinder end of the first cylinder 262 is rotatably connected to the first turntable 22 through the rotary bearing of the third support 261. When the piston rod of the first cylinder 262 extends or retracts, it is hinged to the end of the second turntable 23, converting the linear thrust into rotational torque, thereby causing the second turntable 23 to rotate relative to the first turntable 22. This movement process is linked to the clamping mechanism 27 to adjust the clamping position of the gas cylinder 30. For example, when the first cylinder 262 extends, it pushes the second turntable 23 to rotate clockwise, guiding the clamping mechanism 27 to retract towards the center of the gas cylinder 30; when the first cylinder 262 retracts, it drives the second turntable 23 to rotate counterclockwise, causing the clamping mechanism 27 to expand outward, thereby adapting to the fixing requirements of gas cylinders 30 of different diameters.

[0036] The aforementioned multiple clamping mechanisms 27 are arranged circumferentially along the first turntable 22 or the second turntable 23. Specifically, when the clamping mechanisms 27 are arranged circumferentially along the first turntable 22, the rotation of the first turntable 22 drives all the clamping mechanisms 27 to rotate synchronously, forming an overall adjustment of the clamping position; when the clamping mechanisms 27 are arranged circumferentially along the second turntable 23, the independent rotation of the second turntable 23 causes the clamping mechanisms 27 to have relative displacement with respect to the first turntable 22, realizing local adjustment of the clamping position. During the clamping process, the circumferentially distributed clamping mechanisms 27 expand outward or contract inward synchronously to form a dynamically adjustable clamping space. When processing gas cylinders 30 of different diameters, the clamping mechanisms 27 move radially under the rotational drive of the first turntable 22 or the second turntable 23, so that the clamping mechanisms 27 contact the outer wall of the gas cylinder 30 and apply uniform pressure, thereby avoiding clamping failure caused by the difference in diameter of the gas cylinder 30.

[0037] The clamping mechanism 27 includes a clamping slide rail 271 radially disposed on the first turntable 22, a clamping slider 272 slidably connected to the clamping slide rail 271, a movable base 273 mounted on the clamping slider 272, a guide wheel 274 disposed on the inner end of the movable base 273 along the radial direction of the first turntable 22, a clamping support 275 disposed on the outer end of the movable base 273 along the radial direction of the first turntable 22, a clamping block 276 disposed on the inner side of the top of the clamping support 275, and a clamping pad 277 mounted on the inner side of the clamping block 276. Meanwhile, the second turntable 23 has an equal number of arc-shaped guide grooves 231 as the clamping mechanism 27, extending arc-shaped from near the edge of the second turntable 23 towards near the center. The guide wheel 274 is located within the arc-shaped guide groove 231 and can roll along the arc-shaped guide groove 231. With the above configuration, during the rotation of the second turntable 23 relative to the first turntable 22, the arc-shaped guide groove 231 on its surface will push the guide wheel 274 to move. Since the guide wheel 274 is fixed to the inner end of the movable base 273, and the movable base 273 is connected to the clamping slide rail 271 through the clamping slider 272, the displacement of the guide wheel 274 will force the clamping slider 272 to slide radially along the clamping slide rail 271. This motion transmission causes the clamping support 275 to drive the clamping block 276 to move radially in sync, thereby changing the contact position between the clamping block 276 and the outer wall of the gas cylinder 30. When the diameter of the gas cylinder 30 changes, the rotation angle of the second turntable 23 will be adjusted accordingly. Through the cooperation between the arc-shaped guide groove 231 and the guide wheel 274, the radial position of the clamping support 275 is automatically adjusted, so that the clamping block 276 always maintains effective contact with the outer wall of the gas cylinder 30.

[0038] Combination Figure 1 The gas cylinder filling transition device provided in this embodiment also includes a limiting component 40, which is used to limit the gas cylinder 30 from a position higher than the center of gravity of the gas cylinder 30, preventing the gas cylinder 30 from tipping over and improving the stability of the gas cylinder 30 during loading, unloading, and filling. The position higher than the center of gravity of the gas cylinder means that the constraint point of the limiting component 40 is located vertically above the overall center of gravity of the gas cylinder 30. Specifically, this can be achieved by measuring the height of the center of gravity of the gas cylinder 30 and adjusting the installation height of the limiting component 40 on the frame 12, so that the limiting point and the center of gravity of the gas cylinder 30 form a torque balance relationship.

[0039] Combination Figure 5 and Figure 6The limiting component 40 includes a first limiting mechanism 41, which comprises a first mounting plate 411 fixedly mounted on the frame 12, two mirror-image roller supports 412, and a first roller 413 mounted on the roller supports 412. This allows for two-way horizontal limiting of the gas cylinder 30 during placement, thus improving its stability. When the gas cylinder 30 is placed on the support plate 24, the upper cylindrical section of the gas cylinder 30 enters the clamping area formed by the two mirror-image roller supports 412. The first roller 413 forms rolling contact with the outer wall of the gas cylinder 30. When the gas cylinder 30 experiences slight displacement due to changes in inflation pressure or position adjustment, the first roller 413 rotates in the direction of movement of the gas cylinder 30, preventing surface damage caused by rigid friction. The symmetrical arrangement of the two roller supports 412 provides the gas cylinder 30 with a balanced lateral restraint force, effectively counteracting any lateral torque that may occur during inflation. The rigid connection between the roller support 412 and the first mounting plate 411 ensures that the constraint force is transmitted to the base 11 through the frame 12, forming a complete mechanical transmission path.

[0040] The limiting assembly 40 also includes two sets of second limiting mechanisms 42 mirror-images of the first limiting mechanism 41. Each second limiting mechanism 42 includes a second mounting plate 421 mounted on the frame 12, a limiting slide rail 422 mounted on the second mounting plate 421, a movable seat 423 slidably connected to the limiting slide rail 422, a rocker arm 424 hinged at one end to the second mounting plate 421, a second roller 425 rotatably mounted at the other end of the rocker arm 424, and a connecting rod 426 connecting the movable seat 423 and the rocker arm 424. The movable seat 423 obtains power from a second cylinder 427 mounted on the second mounting plate 421 to move relative to the limiting slide rail 422. One end of the connecting rod 426 is hinged to the movable seat 423, and the other end is hinged to the middle of the rocker arm 424. Therefore, when the second cylinder 427 pushes the movable seat 423 to move horizontally along the limiting slide rail 422, the connecting rod 426 transmits the displacement of the movable seat 423 to the rocker arm 424, forcing the rocker arm 424 to rotate around the hinge point. The second roller 425 at the end of the rocker arm 424 then undergoes radial displacement, thereby adjusting the space between the second roller 425 and the first roller 413 of the first limiting mechanism 41, thus clamping the gas cylinder 30. During this process, the gas cylinder 30 can rotate to adjust the direction of the gas nozzle without tipping over.

[0041] When the two sets of mirror-symmetrical second limiting mechanisms 42 operate synchronously, the second rollers 425 apply symmetrical clamping forces from both sides of the gas cylinder 30, keeping the axis of the gas cylinder 30 aligned with the channel of the frame 12. When the diameter of the gas cylinder 30 changes, the second cylinder 427 adjusts the stroke of the movable seat 423, ensuring that the second rollers 425 always remain in contact with the surface of the gas cylinder 30. The rotational freedom of the second rollers 425 allows the gas cylinder 30 to rotate circumferentially during inflation, preventing abnormal increases in clamping force due to frictional resistance. Compared to existing technologies, traditional limiting devices typically use rigid baffles with fixed spacing or pneumatic grippers in a single direction, which cannot dynamically adjust the clamping range according to the diameter of the gas cylinder 30. This embodiment achieves continuous adjustment of the clamping range through the linkage structure of the limiting slide rail 422 and the rocker arm 424, while utilizing a mirror-symmetrical layout to counteract the eccentric load caused by unilateral force application. Compared to purely mechanical adjustment mechanisms, the cylinder-driven method can integrate automated control, correcting the clamping position in real time after the gas cylinder is placed.

[0042] In a further embodiment, the first roller 413 is mounted to the roller support 412 via an elastic element. This allows the space between the two first rollers 413 and the two second rollers 425 to be elastically varied, maintaining the axial position constant when adapting to gas cylinders 30 of different sizes.

[0043] In a further embodiment, the rocker arm 424 bends away from the first limiting mechanism 41 at the position where it is hinged to the connecting rod 426, thereby increasing the size of the gas cylinder that the limiting assembly 40 can restrict.

[0044] In a further embodiment, multiple pressure sensors (not shown in the figure) are provided between the frame 12 and the base 11. These pressure sensors are located at the corners of the frame 12 or the base 11. The pressure difference values ​​from the pressure sensors can be used for both horizontal adjustment and monitoring of the inflation process of the gas cylinder 30. A pressure sensor is a detection element that converts contact pressure into an electrical signal; specifically, a piezoelectric sensor or a strain gauge sensor can be used. By measuring the pressure changes at the contact surface between the gas cylinder and the device, data support is provided for dynamic adjustment. A pressure monitoring network is formed by covering the main contact area between the gas cylinder and the device with multiple distributed pressure sensors. Specifically, the pressure sensors are arranged at the corners of the frame 12 or the base 11. When the gas cylinder 30 is fixed by the clamping mechanism 27, the sensors on the frame 12 monitor the contact pressure between the sidewall of the gas cylinder 30 and the supporting structure in real time, while the sensors on the base 11 simultaneously detect the pressure distribution between the bottom of the gas cylinder 30 and the support plate 24. When the internal pressure of the gas cylinder 30 changes during inflation, causing a shift in the center of gravity, the pressure sensor data of the frame 12 and the base 11 will show an asymmetrical distribution. At this time, the control system can trigger the drive mechanism of the clamping mechanism 27 to adjust the clamping force or rotation angle, so that the gas cylinder 30 can be restored to a balanced state. For example, when the pressure value on one side of the base 11 exceeds a preset threshold, it can be determined that the gas cylinder 30 is at risk of tilting. Then, the turntable angle is adjusted by the first drive mechanism 25 or the second drive mechanism 26 to redistribute the support force.

[0045] The working principle of this utility model is as follows: When the second drive mechanism 26 drives the second turntable 23 to rotate relative to the first turntable 22, the arc-shaped guide groove 231 on the second turntable 23 pushes the guide wheel 274 of the clamping mechanism 27 to generate radial displacement, which drives the clamping slider 272 to move along the clamping slide rail 271, thereby changing the spacing between the clamping blocks 276 to accommodate gas cylinders 30 of different diameters.

[0046] When the first drive mechanism 25 drives the first turntable 22 to rotate as a whole, the gas cylinder 30 on the support plate 24 rotates synchronously with the first turntable 22 to achieve adjustment of the inflation port angle.

[0047] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A gas cylinder filling transition device, characterized in that, include: The main body (10) of the device includes a base (11) and a frame (12) disposed on the base (11); the frame (12) has a channel for the gas cylinder (30) to enter and exit the frame (12) on at least one side; The support assembly (20) includes a support base plate (21) disposed at the bottom of the frame (12), a first turntable (22) rotatably supported on the support base plate (21), a second turntable (23) rotatably supported on the first turntable (22), a support plate (24) disposed on the second turntable (23), a first drive mechanism (25) disposed on the support base plate (21) and connected to the first turntable (22), a second drive mechanism (26) disposed on the first turntable (22) and connected to the second turntable (23), and a plurality of clamping mechanisms (27) disposed on the first turntable (22) and connected to the second turntable (23); a clamping space is formed between the plurality of clamping mechanisms (27); The second drive mechanism (26) is used to drive the second turntable (23) to rotate relative to the first turntable (22) so as to drive the multiple clamping mechanisms (27) to move synchronously to adjust the size of the clamping space; the first drive mechanism (25) is used to drive the first turntable (22) to rotate relative to the support base plate (21).

2. The gas cylinder filling transition device according to claim 1, characterized in that, The first drive mechanism (25) includes a first support (251) rotatably mounted on the support base plate (21), a first motor (252) horizontally mounted on the first support (251), a second support (254) mounted on the first turntable (22), a lead screw nut (255) mounted on the second support (254), and a drive screw (253) threadedly engaged with the lead screw nut (255) and whose one end is connected to the output end of the first motor (252).

3. The gas cylinder filling transition device according to claim 1, characterized in that, The second drive mechanism (26) includes a third support (261) fixed to the support base plate (21) and a first cylinder (262) rotatably mounted on the first turntable (22) via the third support (261); the other end of the first cylinder (262) is hinged to the second turntable (23).

4. The gas cylinder filling transition device according to claim 1, characterized in that, Multiple clamping mechanisms (27) are arranged circumferentially along the first turntable (22) or the second turntable (23).

5. The gas cylinder filling transition device according to claim 1, characterized in that, The clamping mechanism (27) includes a movable base (273) that moves radially along the first turntable (22), a guide wheel (274) located at the inner radial end of the movable base (273) along the first turntable (22), a clamping support (275) located at the outer radial end of the movable base (273) along the first turntable (22), and a clamping block (276) located on the inner side of the top of the clamping support (275); the second turntable (23) has an equal number of arc-shaped guide grooves (231) as the clamping mechanism (27); the arc-shaped guide grooves (231) extend arc-shapedly from the position near the edge of the second turntable (23) towards the position near the center of the second turntable (23); the guide wheel (274) is located in the arc-shaped guide groove (231) and can roll along the arc-shaped guide groove (231).

6. The gas cylinder filling transition device according to claim 5, characterized in that, The clamping mechanism (27) further includes a clamping slide rail (271) radially disposed on the first turntable (22) along the first turntable (22), and a clamping slider (272) slidably connected to the clamping slide rail (271); a movable base (273) is mounted on the clamping slider (272).

7. The gas cylinder filling transition device according to claim 1, characterized in that, It also includes a limiting component (40) installed on the frame (12); the limiting component (40) is configured to limit the gas cylinder (30) from a position above the center of gravity of the gas cylinder (30).

8. The gas cylinder filling transition device according to claim 7, characterized in that, The limiting component (40) includes a first limiting mechanism (41); the first limiting mechanism (41) includes a first mounting plate (411) fixedly installed on the frame (12) and disposed relative to the channel, two roller supports (412) mirror-disposed on the first mounting plate (411), and a first roller (413) disposed on the roller supports (412).

9. The gas cylinder filling transition device according to claim 8, characterized in that, The limiting assembly (40) further includes two sets of second limiting mechanisms (42) mirror-arranged with respect to the first limiting mechanism (41); the second limiting mechanism (42) includes a second mounting plate (421) fixedly installed on the frame (12), a limiting slide rail (422) provided on the second mounting plate (421), a movable seat (423) slidably connected to the limiting slide rail (422), a rocker arm (424) with one end hinged to the second mounting plate (421), a second roller (425) rotatably installed on the other end of the rocker arm (424), a connecting rod (426) with both ends hinged to the movable seat (423) and the rocker arm (424) respectively, and a second cylinder (427) installed on the second mounting plate (421) and whose working end is connected to the movable seat (423).

10. The gas cylinder filling transition device according to claim 1, characterized in that, It also includes multiple pressure sensors located on the frame (12) and the base (11).

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