Filling clamp for filling gas steel cylinder

Abstract

When the filling clamp is used, the gas steel cylinder to be filled is placed at an opening groove of a bottom plate, a driving motor is matched with a nut base through a lead screw to enable a movable plate to move horizontally, an arc-shaped clamping plate is aligned to the steel cylinder, a telescopic air cylinder drives the arc-shaped clamping plate to clamp the steel cylinder, and the gas steel cylinder is filled with gas. The lifting air cylinder drives the lifting seat to ascend, so that the bottom of the steel cylinder is higher than the rotary placement seat, the steel cylinder moves to the position over the placement groove and is placed in the placement groove, the arc-shaped clamping plate loosens the gas steel cylinder, the rotary placement seat is driven by the rotary motor to drive the steel cylinder to rotate until a filling opening of the steel cylinder faces the filling gas conveying pipe joint, and the arc-shaped clamping plate clamps the steel cylinder; and the filling gas pipe joint is connected with the filling opening of the gas steel cylinder for gas filling, so that the device can realize accurate alignment of the filling opening and the filling joint under the condition that the posture of the gas steel cylinder does not need to be manually adjusted in advance, the steel cylinder positioning process is greatly simplified, the operation convenience is improved, and the labor intensity is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas filling equipment, in particular to a filling clamp for gas cylinder filling. BACKGROUND

[0002] The gas cylinder is usually made of high-strength steel material, which has good compression resistance and can withstand high pressure when filling gas inside. However, the gas stored in the cylinder has high pressure characteristics, and once improper operation or cylinder dumping occurs, it is easy to cause safety accidents, so effective fixing measures must be taken to ensure that the cylinder is in a stable state during the cylinder filling operation.

[0003] In the actual filling process, the gas is usually injected into the cylinder through the filling port arranged on the top or side of the cylinder. In order to avoid the cylinder from tilting or moving during the filling process, the operator often needs to use a filling clamp to clamp and fix the cylinder. The filling clamp in the prior art has a relatively simple structure and can only realize the clamping function of the cylinder, lacking the adjustment ability of the posture or orientation of the cylinder. In actual operation, the operator needs to manually adjust the cylinder to the position where the filling port is aligned with the filling equipment before clamping the cylinder. This operation not only wastes time and effort, but also increases the complexity and safety hazards of manual intervention, which is not conducive to improving the operation efficiency. CONTENT OF THE UTILITY MODEL

[0004] In view of the deficiencies in the prior art, the purpose of the present application is to provide a filling clamp for gas cylinder filling to solve the problems raised in the background art.

[0005] According to one aspect of the present application, a filling clamp for gas cylinder filling includes a support frame, a rotating assembly, a moving assembly, a lifting assembly and a clamping assembly. The lower part of the support frame is fixedly provided with a rotating assembly, which is used to place a gas cylinder and drive the gas cylinder to rotate. The upper part of the support frame is fixedly provided with a fixing piece, which is used to fix a gas filling connector. The moving assembly is fixedly arranged on the support frame at positions on both sides of the rotating assembly. The lifting assembly is fixedly arranged on the moving assembly. The clamping assembly is fixedly arranged on the lifting assembly and is used to clamp and fix the gas cylinder.

[0006] Preferably, the support frame includes a bottom plate and a vertical plate, the vertical plate is vertically fixed on one side of the bottom plate, the fixing piece is fixed on the top of the vertical plate, the rotating assembly is fixed on the bottom plate near the vertical plate, and the moving assembly is fixed on the bottom plate at positions on both sides of the rotating assembly.

[0007] Preferably, the rotating assembly comprises a fixing frame, a rotating motor, a driving gear, a driven gear and a rotating placement seat, the fixing frame is fixedly arranged on the bottom plate, the rotating motor is fixedly arranged on the top of the fixing frame, the output shaft of the rotating motor penetrates through the top of the fixing frame and is fixedly connected with the driving gear, the driving gear is in meshing transmission connection with the driven gear, the middle of the driven gear is fixedly connected with the rotating shaft, the rotating shaft penetrates through the top of the fixing frame and is fixedly connected with the bottom surface of the rotating placement seat, the top surface of the rotating placement seat is recessed in the middle to form a placement groove, the shape and size of the placement groove are matched with the shape and size of the bottom of the gas cylinder, and the rotating shaft and the output shaft of the rotating motor are both rotationally connected with the top of the fixing frame through bearings.

[0008] Preferably, the moving assembly comprises a driving member, a moving slide rail, a moving plate and a supporting vertical plate, the moving slide rail is fixedly arranged on the bottom plate at a position on both sides of the fixing frame along the length thereof, the moving plate is slidably arranged on the moving slide rail through a sliding block, the supporting vertical plate is vertically and fixedly arranged on the opposite side of the moving plate, the distance between the two supporting vertical plates is greater than the width of the rotating assembly, the moving plate and the supporting vertical plate are fixedly connected through a reinforcing rib, the connecting plate is fixedly arranged between the upper portions of the two supporting vertical plates which are close to the rotating assembly, the connecting plate is located above the rotating assembly, the lifting assembly is fixedly arranged on the moving plate, and the moving plate is in transmission connection with the driving member.

[0009] Preferably, the driving member comprises a driving motor, a lead screw, a nut seat, a guide rod and a guide block, the driving motor is fixedly arranged on the bottom plate, the output shaft of the driving motor is fixedly connected with one end of the lead screw, the axis of the lead screw is parallel to the axis of the moving slide rail, the two ends of the lead screw are connected with the bottom plate through a supporting seat, the nut seat is threadedly connected with the lead screw, the nut seat is fixedly connected with one side of the moving plate, the other side of the moving plate is fixedly connected with the guide block, the guide block is slidably arranged on the guide rod, the axis of the guide rod is parallel to the axis of the lead screw, and the two ends of the guide rod are fixedly connected with the bottom plate.

[0010] Preferably, the lifting assembly comprises a lifting cylinder, a lifting seat and a lifting slide rail, the lifting cylinder is fixedly arranged on the moving plate, the extending end of the lifting cylinder is vertically and upwardly arranged, the top of the extending end of the lifting cylinder is fixedly arranged with the lifting seat, the lifting seat is fixedly arranged with the clamping assembly, the lifting slide rail is fixedly arranged on the side of the supporting vertical plate which faces the corresponding lifting seat along the extending direction of the lifting cylinder, and the lifting seat is slidably arranged on the lifting slide rail through a sliding block.

[0011] Preferably, the clamping assembly comprises telescopic air cylinders, arc-shaped clamping plates and non-slip mats, two telescopic air cylinders are horizontally and fixedly arranged on the two lifting seats respectively, the two telescopic air cylinders are symmetrically arranged, the extending ends of the two telescopic air cylinders are oppositely arranged, strip-shaped slot holes are formed in the two supporting vertical plates along the axis direction of the lifting slide rails, the extending ends of the two telescopic air cylinders respectively pass through the strip-shaped slot holes in the corresponding supporting vertical plates, arc-shaped clamping plates are fixedly arranged on the extending ends of the telescopic air cylinders, the inner arc surfaces of the two arc-shaped clamping plates are oppositely and symmetrically arranged, the symmetric reference surfaces of the two arc-shaped clamping plates pass through the central axis of the placing groove, non-slip mats are fixedly arranged on the inner arc surfaces of the arc-shaped clamping plates, and the central axes of the two arc-shaped clamping plates are parallel to the central axis of the placing groove.

[0012] Preferably, an open slot is formed in the middle of the side of the bottom plate away from the rotating assembly, the open slot is used for placing a gas cylinder to be filled, and initially, the two arc-shaped clamping plates are located on the two sides of the open slot.

[0013] Preferably, the fixing member comprises a fixed clamping piece and a movable clamping piece, the fixed clamping piece is fixedly arranged on the top of the vertical plate, the movable clamping piece is fixedly arranged above the fixed clamping piece through screws, and an arc-shaped groove is arranged between the fixed clamping piece and the movable clamping piece and used for placing a filling gas pipe.

[0014] Compared with the prior art, the gas cylinder filling clamp has the advantages that: the gas cylinder to be filled is placed at the opening groove position of the bottom plate, then the driving motor of the moving assembly drives the screw rod to rotate, so that the nut seat moves along the screw rod, and the moving plate moves on the moving slide rail through the sliding block, so that the arc-shaped clamping plate of the clamping assembly is aligned with the gas cylinder to be filled, then the extension end of the telescopic cylinder on both sides is extended to tightly clamp the bottle body of the gas cylinder, then the extension end of the lifting cylinder of the lifting assembly is extended upward to drive the lifting seat to rise, so that the arc-shaped clamping plate clamps the gas cylinder to rise and make the bottom higher than the rotating placement seat of the rotating assembly, then the gas cylinder is moved to the upper side of the placement groove of the rotating placement seat through the moving assembly, then the gas cylinder is lowered and placed in the placement groove through the lifting assembly, then the extension end of the telescopic cylinder is retracted to release the gas cylinder, then the driving motor of the rotating assembly drives the driving gear to rotate, so that the rotating placement seat is rotated through the driven gear, and the gas cylinder is rotated, so that the filling port of the gas cylinder is opposite to the filling gas pipe connector, then the extension end of the telescopic cylinder is extended to clamp and fix the gas cylinder, and the filling gas pipe connector is connected with the filling port of the gas cylinder for filling, so that the device can accurately align the filling port and the filling connector without manual adjustment of the posture of the gas cylinder in advance, the steel cylinder positioning process is greatly simplified, the operation convenience is improved, and the manual strength is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a perspective view of a gas cylinder filling clamp according to an embodiment of the application.

[0016] Figure 2 It is a front view of a gas cylinder filling clamp according to an embodiment of the application.

[0017] Figure 3 It is a top view of a gas cylinder filling clamp according to an embodiment of the application.

[0018] Figure 4 It is a partial view of a rotating assembly of a gas cylinder filling clamp according to an embodiment of the application.

[0019] Figure 5 It is a use state diagram of a gas cylinder filling clamp according to an embodiment of the application.

[0020] Reference numerals: 1. Base plate; 2. Vertical plate; 3. Fixing frame; 4. Rotary motor; 5. Drive gear; 6. Driven gear; 7. Rotary placement seat; 8. Placement groove; 9. Rotating shaft; 10. Moving slide rail; 11. Moving plate; 12. Supporting vertical plate; 13. Connecting plate; 14. Drive motor; 15. Lead screw; 16. Nut seat; 17. Guide rod; 18. Guide block; 19. Lifting cylinder; 20. Lifting seat; 21. Lifting slide rail; 22. Telescopic cylinder; 23. Arc-shaped clamping plate; 24. Anti-slip pad; 25. Opening slot; 26. Fixed clamping piece; 27. Movable clamping piece; 28. Gas cylinder. Detailed Implementation

[0021] To make the content of this application easier to understand, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to the accompanying drawings. Figure 2 In this context, the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. Furthermore, terms such as "first," "second," etc., are used for descriptive purposes only and should not be interpreted as indicating or implying relative importance.

[0022] like Figures 1-5 As shown, a filling fixture for filling gas cylinders includes a support frame, a rotating assembly, a moving assembly, a lifting assembly, and a clamping assembly. The support frame includes a base plate 1 and a vertical plate 2. The vertical plate 2 is vertically fixed to one side of the base plate 1. A fixing component is fixedly provided on the top of the vertical plate 2. The fixing component includes a fixed clamping piece 26 and a movable clamping piece 27. The fixed clamping piece 26 is fixedly provided on the top of the vertical plate 2. The movable clamping piece 27 is fixed above the fixed clamping piece 26 by screws. An arc-shaped groove is provided between the fixed clamping piece 26 and the movable clamping piece 27 for fixing and placing the filling gas pipe. This design can fix and position the filling gas pipe before filling, ensuring that the pipeline and the filling port of the gas cylinder are always in the correct alignment position. To prevent the pipeline from sliding or falling off during vibration, the movable clamp 27 can be adjusted by screws to finely adjust the pipeline position; a rotating component is fixedly installed on the base plate 1 near the upright plate 2. The rotating component is used to place the gas cylinder 28 and drive the gas cylinder 28 to rotate. An opening slot 25 is opened in the middle of the side of the base plate 1 away from the rotating component. The opening slot 25 is used to place the gas cylinder 28 to be filled. A moving component is fixedly installed on the base plate 1 on both sides of the rotating component. A lifting component is fixedly installed on the moving component. A clamping component is fixedly installed on the lifting component. The clamping component is used to clamp and fix the gas cylinder 28. Initially, the clamping component is located on both sides of the opening slot 25.

[0023] In one embodiment, the rotating assembly comprises a fixed frame 3, a rotating motor 4, a driving gear 5, a driven gear 6 and a rotating placement seat 7, the fixed frame 3 is fixedly arranged on the bottom plate 1, the rotating motor 4 is fixedly arranged on the top of the fixed frame 3, the output shaft of the rotating motor 4 penetrates through the top of the fixed frame 3 downward and is fixedly connected with the driving gear 5, the driving gear 5 is in meshing transmission connection with the driven gear 6, the middle of the driven gear 6 is fixedly connected with the rotating shaft 9, the rotating shaft 9 penetrates through the top of the fixed frame 3 upward and is fixedly connected with the bottom surface of the rotating placement seat 7, the top surface of the rotating placement seat 7 is recessed with a placement groove 8 in the middle, the shape and size of the placement groove 8 are matched with the shape and size of the bottom of the gas cylinder 28, and the rotating shaft 9 and the output shaft of the rotating motor 4 are both rotationally connected with the top of the fixed frame 3 through bearings; in this design, the shape and size of the placement groove 8 are matched with the bottom of the cylinder, the bottom of the cylinder is carried and accurately positioned, the center of the cylinder body is concentric with the rotating shaft 9 during rotation, and after the cylinder is placed in the placement groove, the meshing gear set is driven by the rotating motor 4 to realize slow and controllable rotation of the cylinder body, so as to automatically turn the filling port to a specified direction.

[0024] In one embodiment, the moving assembly comprises a driving member, a moving slide rail 10, a moving plate 11 and a supporting vertical plate 12, the moving slide rail 10 is fixedly arranged on the bottom plate 1 at positions on both sides of the fixed frame 3 along the length thereof, the moving plate 11 is slidingly arranged on the two moving slide rails 10 through sliding blocks, the supporting vertical plate 12 is vertically and fixedly arranged on the opposite side of the two moving plates 11, the distance between the two supporting vertical plates 12 is greater than the width of the rotating assembly, the moving plate 11 and the supporting vertical plate 12 are fixedly connected through reinforcing ribs, and the connecting plate 13 is fixedly arranged between the upper parts of the two supporting vertical plates 12 close to the rotating assembly, so as to enhance the overall structural strength and stability of the moving assembly, the connecting plate 13 is located above the rotating assembly to avoid moving interference, and the lifting assembly is fixedly arranged on the two moving plates 11 and is in transmission connection with the driving member, specifically, the driving member comprises a driving motor 14, a lead screw 15, a nut seat 16, a guide rod 17 and a guide block 18, the driving motor 14 is fixedly arranged on the bottom plate 1, the output shaft of the driving motor 14 is fixedly connected with one end of the lead screw 15, the axis of the lead screw 15 is parallel to the axis of the moving slide rail 10, the two ends of the lead screw 15 are connected with the bottom plate 1 through supporting seats, the nut seat 16 is threadedly connected with the lead screw 15, the nut seat 16 is fixedly connected with the moving plate 11 on one side, the moving plate 11 on the other side is fixedly connected with the guide block 18, the guide block 18 is slidingly sleeved on the guide rod 17, the axis of the guide rod 17 is parallel to the axis of the lead screw 15, and the two ends of the guide rod 17 are fixedly connected with the bottom plate 1; in this design, the moving assembly can be driven by the driving member to move the clamping assembly and the lifting assembly horizontally along the slide rails on both sides of the bottom plate 1, so as to complete the horizontal translation of the gas cylinder 28 from the initial placement position to above the rotating placement seat 7.

[0025] In one embodiment, the clamping assembly includes telescopic cylinders 22, arc-shaped clamping plates 23 and non-slip mats 24, two telescopic cylinders 22 are respectively fixed horizontally on the two lifting seats 20, the two telescopic cylinders 22 are symmetrically arranged, and the extending ends of the two telescopic cylinders 22 are oppositely arranged, strip-shaped slots are formed on the two support vertical plates 12 along the axis direction of the lifting slide rails 21, the extending ends of the two telescopic cylinders 22 respectively pass through the strip-shaped slots on the corresponding support vertical plates 12, and the extending ends of the telescopic cylinders 22 are fixedly provided with the arc-shaped clamping plates 23, the inner arc surfaces of the two arc-shaped clamping plates 23 are oppositely and symmetrically arranged, and the symmetric reference planes of the two arc-shaped clamping plates 23 pass through the central axis of the placing groove 8, the non-slip mats 24 are fixedly arranged on the inner arc surfaces of the arc-shaped clamping plates 23, the central axes of the two arc-shaped clamping plates 23 are parallel to the central axis of the placing groove 8, initially, the two arc-shaped clamping plates 23 are located on both sides of the open slot 25, the open slot 25 is designed to quickly place the gas cylinder 28 to be filled at the position of the bottom plate 1, facilitating pre-positioning, in the design, the telescopic cylinders 22 push the arc-shaped clamping plates 23 to clamp the cylinder body of the gas cylinder 28 inward, the non-slip mats 24 increase friction to prevent slipping, the stable grabbing and releasing of the gas cylinder 28 are completed, the double-cylinder double-plate symmetric arrangement realizes uniform stress, avoids the eccentric load of the cylinder body, the curvature of the arc-shaped clamping plates 23 matches the curvature of the cylinder body of the gas cylinder 28, the stress surface is large, and the clamping is more reliable.

[0026] In one embodiment, the lifting assembly includes lifting cylinders 19, lifting seats 20 and lifting slide rails 21, the lifting cylinders 19 are fixedly arranged on the two moving plates 11, the extending ends of the two lifting cylinders 19 are vertically upwardly arranged, and the top portions of the two lifting cylinders 19 are fixedly provided with the lifting seats 20, the clamping assembly is fixedly arranged on the lifting seat 20, the lifting slide rails 21 are fixedly arranged on the side of the two support vertical plates 12 facing the corresponding lifting seats 20 along the extending direction of the lifting cylinders 19, and the lifting seat 20 is slidingly arranged on the lifting slide rail 21 through a sliding block; in the design, after the clamping assembly clamps the cylinder body of the gas cylinder 28, the extending and retracting of the lifting cylinders 19 realizes the vertical lifting of the clamping assembly together with the whole cylinder, for lifting the bottom of the cylinder away from the initial open slot 25 and placing the cylinder above the rotating placing seat 7, and the descending on the placing seat is completed in the same way.

[0027] In one embodiment, the open slot 25 is formed in the middle of the side of the bottom plate 1 away from the rotating assembly, the open slot 25 is used for placing the gas cylinder 28 to be filled, initially, the two arc-shaped clamping plates 23 are located on both sides of the open slot 25,

[0028] Working principle: in use, the gas cylinder 28 to be filled is placed at the open slot 25 of the bottom plate 1, then the drive belt of the driving motor 14 drives the screw rod 15 to rotate, so that the nut seat 16 moves along the screw rod 15 and drives the moving plate 11 to move on the moving slide rail 10 through the sliding block, so that the arc-shaped clamping plate 23 is aligned with the gas cylinder 28 to be filled, then the extension end of the telescopic cylinder 22 on both sides is extended to drive the arc-shaped clamping plate 23 to tightly clamp the cylinder body of the gas cylinder 28, then the extension end of the lifting cylinder 19 is extended upward to drive the lifting seat 20 to rise, so that the arc-shaped clamping plate 23 clamps the gas cylinder 28 to rise and make its bottom higher than the rotating placing seat 7, then the gas cylinder 28 is driven by the moving assembly to move to the above of the placing groove 8 of the rotating placing seat 7, then the gas cylinder 28 is driven by the lifting assembly to descend and be placed in the placing groove 8, then the extension end of the telescopic cylinder 22 is retracted to release the arc-shaped clamping plate 23 from the gas cylinder 28, then the driving gear 5 is driven by the rotating motor 4 to rotate, so that the driven gear 6 drives the rotating placing seat 7 to rotate and drives the gas cylinder 28 to rotate, so that the filling port of the gas cylinder 28 is opposite to the filling gas pipe joint, then the extension end of the telescopic cylinder 22 is extended to clamp and fix the gas cylinder 28, and the filling gas pipe joint is connected with the filling port of the gas cylinder 28 for inflation, so that the device can accurately align the filling port and the filling joint without manual adjustment of the attitude of the gas cylinder 28 in advance, greatly simplifies the cylinder positioning process, improves the operation convenience, and reduces the labor intensity.

[0029] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them. Although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that, without departing from the spirit and scope defined by the claims of the present application, they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features.

Claims

1. A filling clamp for a gas cylinder, comprising a support frame, a rotating assembly, a moving assembly, a lifting assembly and a clamping assembly, characterized in that, The lower part of the support frame is fixedly provided with a rotating assembly for placing and rotating a gas cylinder (28), and the upper part of the support frame is fixedly provided with a fixing member for fixing a gas filling connector.

2. A filling clamp for filling gas cylinders according to claim 1, characterized in that The support frame comprises a bottom plate (1) and a vertical plate (2) fixedly provided on one side of the bottom plate (1), and the fixing member is fixedly provided on the top of the vertical plate (2); the rotating assembly is fixedly provided on the bottom plate (1) near the vertical plate (2); and the moving assembly is fixedly provided on the bottom plate (1) at positions on both sides of the rotating assembly.

3. A filling clamp for filling gas cylinders according to claim 2, characterized in that The rotating assembly comprises a fixing frame (3), a rotating motor (4), a driving gear (5), a driven gear (6) and a rotating placing seat (7); the fixing frame (3) is fixedly provided on the bottom plate (1); the rotating motor (4) is fixedly installed on the top of the fixing frame (3); the output shaft of the rotating motor (4) penetrates downward through the top of the fixing frame (3) and is fixedly connected with the driving gear (5); the driving gear (5) is in meshing transmission connection with the driven gear (6); the middle part of the driven gear (6) is fixedly connected with a rotating shaft (9); the rotating shaft (9) penetrates upward through the top of the fixing frame (3) and is fixedly connected with the bottom surface of the rotating placing seat (7); the top surface of the rotating placing seat (7) is recessed in the middle part to form a placing groove (8); the shape and size of the placing groove (8) are adapted to those of the bottom of the gas cylinder (28); and the rotating shaft (9) and the output shaft of the rotating motor (4) are both rotationally connected with the top of the fixing frame (3) through bearings.

4. A filling clamp for filling gas cylinders according to claim 3, characterized in that The moving assembly comprises a driving member, moving slide rails (10), a moving plate (11) and support vertical plates (12); the moving slide rails (10) are fixedly provided on the bottom plate (1) at positions on both sides of the fixing frame (3) along the length thereof; the moving plate (11) is slidably provided on the two moving slide rails (10) through sliding blocks; the support vertical plates (12) are fixedly provided on opposite sides of the moving plate (11) in a vertical manner; the distance between the two support vertical plates (12) is greater than the width of the rotating assembly; the moving plate (11) and the support vertical plates (12) are fixedly connected through reinforcing ribs; a connecting plate (13) is fixedly provided between the upper parts of the two support vertical plates (12) near the rotating assembly; the connecting plate (13) is located above the rotating assembly; the lifting assembly is fixedly provided on the moving plate (11); and the moving plate (11) is in transmission connection with the driving member.

5. A filling clamp for filling gas cylinders according to claim 4, characterized in that The driving member comprises a driving motor (14), a lead screw (15), a nut seat (16), a guide rod (17) and a guide block (18), the driving motor (14) is fixedly arranged on the bottom plate (1), the output shaft of the driving motor (14) is fixedly connected with one end of the lead screw (15), the axis of the lead screw (15) is parallel to the axis of the moving slide rail (10), both ends of the lead screw (15) are connected with the bottom plate (1) through support seats, the lead screw (15) is threadedly connected with the nut seat (16), the nut seat (16) is fixedly connected with the moving plate (11) on one side, the moving plate (11) on the other side is fixedly connected with the guide block (18), the guide block (18) is slidably arranged on the guide rod (17), the axis of the guide rod (17) is parallel to the axis of the lead screw (15), and both ends of the guide rod (17) are fixedly connected with the bottom plate (1).

6. A filling clamp for filling gas cylinders according to claim 4, characterized in that The lifting assembly comprises a lifting cylinder (19), a lifting seat (20) and a lifting slide rail (21), the lifting cylinder (19) is fixedly arranged on each of the two moving plates (11), the extending ends of the two lifting cylinders (19) are vertically upwardly arranged and the top of each of the two lifting cylinders (19) is fixedly provided with the lifting seat (20), the lifting seat (20) is fixedly provided with the clamping assembly, the lifting slide rail (21) is fixedly arranged on the side of each of the two support vertical plates (12) facing the corresponding lifting seat (20) along the extending direction of the lifting cylinder (19), and the lifting seat (20) is slidably arranged on the lifting slide rail (21) through a sliding block.

7. A filling clamp for filling gas cylinders according to claim 6, characterized in that The clamping assembly comprises a telescopic cylinder (22), an arc-shaped clamping plate (23) and a non-slip pad (24), the telescopic cylinder (22) is horizontally fixedly arranged on each of the two lifting seats (20), the two telescopic cylinders (22) are symmetrically arranged, the extending ends of the two telescopic cylinders (22) are oppositely arranged, a strip-shaped slot is formed in the axis direction of the lifting slide rail (21) on each of the two support vertical plates (12), the extending end of each of the two telescopic cylinders (22) penetrates through the strip-shaped slot on the corresponding support vertical plate (12) and the extending end of the telescopic cylinder (22) is fixedly provided with the arc-shaped clamping plate (23), the inner arc surfaces of the two arc-shaped clamping plates (23) are oppositely and symmetrically arranged, the symmetric reference planes of the two arc-shaped clamping plates (23) pass through the central axis of the placing groove (8), the non-slip pad (24) is fixedly arranged on the inner arc surface of the arc-shaped clamping plate (23), and the central axes of the two arc-shaped clamping plates (23) are parallel to the central axis of the placing groove (8).

8. A filling clamp for filling gas cylinders according to claim 7, characterized in that An open slot (25) is formed in the middle of the side of the bottom plate (1) away from the rotating assembly, the open slot (25) is used for placing the gas cylinder (28) to be filled, and initially, the two arc-shaped clamping plates (23) are located on the two sides of the open slot (25).

9. The filling clamp for filling gas cylinders according to claim 2, wherein The fixing part comprises a fixed clamping piece (26) and a movable clamping piece (27), the fixed clamping piece (26) is fixed on the top of the vertical plate (2), the movable clamping piece (27) is fixed above the fixed clamping piece (26) through a screw, and an arc-shaped recess is arranged between the fixed clamping piece (26) and the movable clamping piece (27) and used for placing a filling gas conveying pipe.

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