Flame cutting machine gun head connection tooling

Abstract

The invention discloses a flame cutting machine gun head connecting tool, comprising a gun barrel sleeve and a gun head, wherein the gun head is fixed in the gun barrel sleeve, and is characterized in that it also comprises a crossbeam and a connecting plate, wherein one end of the crossbeam is hingedly connected to the connecting plate, and the connecting plate is fixedly connected to the gun barrel sleeve at a side wall away from the crossbeam, and the cutting angle of the gun head is adjusted by rotating the connecting plate relative to the crossbeam, and an angle control structure is also provided on the crossbeam; the flame cutting machine gun head connecting tool of the invention controls the extension and contraction of the threaded rod through the angle control structure, thereby pulling the connecting plate to rotate, so that the gun head can be rotated arbitrarily within a certain angle and keep the angle constant, thereby facilitating automatic control and adjustment of the gun head to keep a certain angle to cut the material. The crossbeam connected to the gun head can be lifted and lowered as a whole through a lifting mechanism, so that the optimal cutting distance can be adjusted for materials of different thicknesses or heights during blanking, thereby improving the cutting accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of flame cutting machines, in particular to a flame cutting machine gun head connecting tooling. Background Art

[0002] Flame cutting machine is a kind of cutting equipment that uses gas and oxygen or gasoline and oxygen to cut metal materials. According to the metal material and the thickness of the metal to be cut, from a process point of view, it is recommended to use flame to cut carbon steel plates above 5mm, because the thermal deformation of such steel plates is very small. Early flame cutting machines were usually hand-held cutting or semi-automatic cutting. With the progress of society and the development of science and technology, CNC flame cutting machines have emerged. CNC flame cutting machine CNC cutting machine uses digital program to drive the movement of machine tools, is equipped with a flame cutting system, and uses a CNC system to control the switch of the flame cutting system to cut metal materials such as steel plates, avoiding manual hand-held operation and improving cutting accuracy and cutting efficiency; this mechatronic cutting equipment is a CNC flame cutting machine; CNC flame cutting machine has the ability to cut large-thickness carbon steel, and plays a key role in plate cutting and blanking during ship construction.

[0003] However, the general fixing method of the CNC flame cutting machine gun head in the prior art is: Publication (Announcement) No. CN101376188B is a CNC flame cutting machine torch and a CNC flame cutting machine, in which the gun head is fixed on a cutting nozzle holder, and a fixed gun head connecting tooling structure is adopted, so that the gun head of the flame cutting machine can only cut vertically on the surface of the steel plate during processing, so that the cut can only cut a straight cut, and cannot cut an oblique cut, resulting in an increase in the workload of subsequent grinding of the oblique cut.

[0004] Publication (announcement) No. CN106513918B discloses a flame cutting machine, in which one end of a first connecting rod is movably connected to one end of a second connecting rod via a first pin shaft, and the other end of the second connecting rod is movably connected to a side surface of a flame nozzle via a second pin shaft. Although a tooling for clamping a flame cutting machine gun head with adjustable angle is designed, they are all simply hinged connections with pin shafts, which are not convenient for fixing the angle, and are prone to angle changes during use, resulting in an inaccurate cutting angle.

[0005] In view of the above, we propose a flame cutting machine gun head connecting tooling to solve the above problems. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the above technical defects and provide a flame cutting machine gun head connecting tooling which has a reasonable structure, strong practicality, good clamping effect on the gun head, easy angle adjustment and high precision.

[0007] In order to solve the above technical problems, the technical solution provided by the present invention is as follows: a flame cutting machine gun head connecting tooling comprises a gun barrel sleeve and a gun head, wherein the gun head is fixed in the gun barrel sleeve, and further comprises a crossbeam and a connecting plate, wherein one end of the crossbeam is hingedly connected to the connecting plate, and the connecting plate is fixedly connected to the gun barrel sleeve at a side wall away from the crossbeam, and the cutting angle of the gun head is adjusted by rotating the connecting plate relative to the crossbeam, and an angle control structure is also provided on the crossbeam;

[0008] The angle control structure includes a keyway, a sliding key, and a telescopic rod structure. The keyway is a recessed groove arranged on the side of the connecting plate. The sliding key is placed in the keyway for sliding connection. The telescopic rod structure is set on the beam and can controllably telescope along the direction of the beam. The end of the telescopic rod structure is connected to the sliding key.

[0009] Furthermore, the telescopic rod structure includes a threaded rod, a connecting rod, and a driving part. At least two guide blocks are fixedly provided on the lower side of the crossbeam. The threaded rod passes through the guide block and is slidably connected thereto and can be telescopically moved along the crossbeam direction under the control of the driving part. One end of the threaded rod facing the keyway is connected to the sliding key through a connecting rod. The connecting rod is fixedly connected to the threaded rod, and the other end of the connecting rod is rotatably connected to the keyway.

[0010] The driving part includes a reduction motor, a worm wheel, and a worm. The worm wheel is rotatably connected and arranged in a guide block, and the inner ring of the worm wheel has an internal thread. The worm wheel is screwed to the threaded rod through the internal thread. The output end of the reduction motor is connected to the worm, and the worm is meshed with the outer ring of the worm wheel.

[0011] Furthermore, it also includes a lifting mechanism for controlling the up and down lifting of the crossbeam. A connecting block and a nut structure are provided on the side of the crossbeam away from the gun head. The lifting mechanism includes a guide rod, a lifting screw, and a driving motor. The guide rod is arranged in parallel with the lifting screw. The upper and lower ends of the guide rod are respectively fixed on the fixed blocks. The two ends of the lifting screw are rotatably connected to the fixed blocks on both sides. The driving motor is arranged on the fixed block and its output end drives the lifting screw to rotate. The connecting block is slidably connected to the guide rod, and the nut structure is threadedly connected to the lifting screw.

[0012] Furthermore, it also includes a clutch structure for controlling the engagement and disengagement of the nut structure with the lifting screw, the clutch structure includes a mounting plate, the mounting plate is fixedly connected to the side of the connecting block, the mounting plate is extended to one side of the lifting screw, and a guide groove is provided inside the mounting plate extending to the lifting screw; the nut structure can be formed by connecting two half nuts separated in the middle, and a slider placed in the guide groove is provided on the side of the half nut. The two half nuts can move closer to or away from the lifting screw in a mirror-image motion under the guidance of the slider, and a spring is provided between the side of the two half nuts away from each other and the end face of the guide groove.

[0013] Furthermore, the clutch structure also includes a cam driving structure that drives the two half nuts to move in mirror image. The cam driving structure is rotatably connected to the side of the mounting plate and includes a symmetrical cam and a handle. The end of the symmetrical cam is fixedly connected to the handle. The symmetrical cam is rotatably connected to the middle part of the two half nuts. The end faces of the two half nuts are vertically fixed with a push rod. The symmetrical cam is an elliptical cam structure with two pointed ends, and the pointed ends on both sides are concave with limit grooves.

[0014] Furthermore, it also includes an angle indicating structure, which has a pointer and an angle scale. The angle scale is distributed in an arc shape on the back side of the key slot of the connecting plate. The pointer is fixed at the end of the beam. The pointer cooperates with the angle scale to indicate the inclination angle of the gun head.

[0015] Furthermore, a guide groove is provided on the side wall along the length direction of the threaded rod, and a key placed in the guide groove is protruded from the inner wall of the guide block where the driving part is not provided, and the key is used to prevent the threaded rod from rotating.

[0016] Furthermore, the gun barrel sleeve is in the shape of a hollow cylinder and has an opening on the side away from the connecting plate, connecting ears are respectively provided on both sides of the opening, hand screws are passed through the connecting ears, and the connecting ears on one side of the opening are provided with a through hole for the screw to pass through, and the connecting ears on the other side are provided with a threaded hole for screwing with the screw.

[0017] Furthermore, ball tracks are provided on both sides of the keyway, spherical grooves for placing balls are provided on both sides of the sliding key, and a ball body is provided in the spherical groove. When the sliding key moves in the keyway, the two sides of the ball body roll in the ball tracks and the spherical groove respectively.

[0018] Furthermore, a linear bearing is provided in the connecting block, and the connecting block is slidably connected to the guide rod via the linear bearing.

[0019] The advantages of the present invention over the prior art are as follows: 1. The flame cutting machine gun head connecting tooling of the present invention controls the extension and retraction of the threaded rod through the angle control structure, thereby pulling the connecting plate to rotate, so that the gun head can be rotated arbitrarily within a certain angle and keep the angle constant, thereby facilitating automatic control and adjustment of the gun head to maintain a certain angle for cutting the material.

[0020] Second, the lifting mechanism can be used to control the lifting of the beam connecting the gun head as a whole, so as to adjust the optimal cutting distance for materials of different thicknesses or heights during cutting, thereby improving the cutting accuracy.

[0021] 3. A clutch structure is also provided in the lifting mechanism of the device. The clutch structure controls the two half nuts to engage or move away from the lifting screw. When the two half nuts are close to each other, the whole nut can engage with the lifting screw to drive the beam to lift. When the two half nuts move away, the beam loses the control of the lifting screw, which is conducive to manually adjusting the longitudinal height of the beam to a large extent.

[0022] Fourth, the indicator structure can indicate the deflection angle of the gun head when the connecting plate rotates, so as to facilitate observation and control by the operator.

[0023] 5. A ball body is arranged between the mating surfaces of the keyway and the sliding key to convert the sliding friction between the two into rolling friction, thereby improving the control accuracy of the connecting plate and reducing friction resistance.

[0024] 6. The linear bearings provided on the connecting blocks are helpful to reduce the friction resistance of the lifting and lowering of the crossbeam and improve the maneuverability of the lifting and lowering. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the flame cutting machine gun head connecting tooling of the present invention.

[0026] Figure 2 It is a schematic diagram of the internal structure of the driving part of the present invention.

[0027] Figure 3 It is a schematic diagram comparing the angle adjustment of the gun head of the present invention before and after the driving part is driven.

[0028] Figure 4 The nut structure of the present invention is controlled to be opened and closed. Figure 1 .

[0029] Figure 5 The nut structure of the present invention is controlled to be opened and closed. Figure 2 .

[0030] Figure 6 The present invention Figure 2 Schematic diagram of the AA cross-section structure.

[0031] Figure 7 It is a schematic diagram of the cross-sectional structure of the keyway of the present invention.

[0032] As shown in the figure: 1. Gun barrel sleeve; 2. Gun head; 3. Crossbeam; 4. Connecting plate; 5. Threaded rod; 6. Connecting rod; 7. Sliding key; 8. Keyway; 9. Driving unit; 10. Guide block; 11. Reducer motor; 12. Worm gear; 13. Worm; 14. Lifting mechanism; 15. Connecting block; 16. Nut structure; 17. Guide rod; 18. Lifting screw; 19. Driving motor; 20. Fixed block; 21. Mounting plate; 22. Guide groove; 23. Half nut; 24. Slider; 25. Spring; 26. Symmetrical cam; 27. Handle; 28. Push rod; 29. ​​Limiting groove; 30. Pointer; 31. Angle scale; 32. Guide groove; 33. Opening; 34. Connecting ear; 35. Ball track; 36. Ball body; 37. Spherical groove; 38. Linear bearing. DETAILED DESCRIPTION

[0033] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings, wherein the same components are represented by the same reference numerals.

[0034] In the description of the present invention, it should be understood that the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In addition, the term "including" and any variation thereof are intended to cover non-exclusive inclusions.

[0035] Flame cutting machine gun head connection tooling, such as Figure 1As shown, it includes a gun barrel sleeve 1 and a gun head 2, and the gun head 2 is fixed in the gun barrel sleeve 1. The gun barrel sleeve 1 is in a hollow cylindrical shape. When in use, the gun head 2 can be inserted from the upper end of the gun barrel sleeve so that the lower end of the gun head 2 extends out of the gun barrel sleeve 1. The lower end of the gun head 2 is used for cutting and blanking materials, and an opening 33 is provided on the side away from the connecting plate 4, and an opening is provided to make the gun barrel sleeve 1 retractable and adjustable. Connecting ears 34 are respectively provided on both sides of the opening 33, and a hand screw is provided through the connecting ears 34. The connecting ears 34 on one side of the opening 33 are provided with a through hole for the screw to pass through, and the connecting ears 34 on the other side are provided with a threaded hole for screwing with the screw. When in use, the hand screw is inserted from one side of the through hole, and the thread of the hand screw is screwed into the threaded hole for tightening, so that the connecting ears 34 on both sides can be pulled closer, thereby tightening the gun head 2, and an anti-slip pad can be provided on the inner wall of the gun barrel sleeve 1 to enhance the fixing effect.

[0036] Embodiment 1, as Figure 2 , Figure 3 As shown, in order to allow the angle of the gun head 2 to be rotatably adjusted, a crossbeam 3 and a connecting plate 4 are provided, one end of the crossbeam 3 is hingedly connected to the connecting plate 4, and the connecting plate 4 is fixedly connected to the gun barrel sleeve 1 on the side wall away from the crossbeam 3. The cutting angle of the gun head 2 is adjusted by rotating the connecting plate 4 relative to the crossbeam 3. The crossbeam 3 is also provided with an angle control structure, which can adjust the angle of the gun head 2 by remote control, so as to facilitate changing the cutting angle as needed during cutting;

[0037] Specifically, the angle control solution structure includes a threaded rod 5, a connecting rod 6, a sliding key 7, a keyway 8, and a driving part 9. At least two guide blocks 10 are fixedly arranged on the lower side of the crossbeam 3. The two guide blocks 10 can maintain and control the stability of the direction in which the threaded rod 5 extends, and the number of guide blocks 10 can also be increased to improve stability. The threaded rod 5 passes through the guide blocks 10 and is slidably connected thereto and can be telescopically moved along the direction of the crossbeam 3 under the control of the driving part 9; the keyway 8 is a recessed groove arranged on the side of the connecting plate 4, and the sliding key 7 is placed in the keyway 8 for sliding connection. The threaded rod 5 is connected to the sliding key 7 at one end facing the keyway 8 through the connecting rod 6, and the connecting rod 6 is fixedly connected to the threaded rod 5, and the other end of the connecting rod 6 is rotatably connected to the keyway 8; a guide groove 32 is arranged on the side wall along the length direction of the threaded rod 5, and a card key placed in the guide groove 32 is protruded from the inner wall of the guide block 10 where the driving part 9 is not arranged, and the card key is used to prevent the threaded rod 5 from rotating, such as Figure 3 As shown in (a), in this state, the threaded rod 5 extends outward, and the sliding key 7 is pushed to move in the key slot 8 through the connecting rod 6, so that the gun head 2 rotates counterclockwise by a certain angle; Figure 3As shown in (b), the threaded rod 5 is retracted and moved, and the key slot 8 is pulled by the connecting rod 6 to rotate the connecting plate 4 and control the gun head 2 to rotate clockwise at a certain angle. It can be understood that this adjustment structure can stop at any position within a certain angle range, so that any cutting angle can be automatically adjusted within the angle range and can remain stable, thereby improving the accuracy of the cutting angle. Figure 3 , Figure 7 As shown, ball tracks 35 are provided on both sides of the key slot 8, and spherical grooves 37 for placing balls are provided on both sides of the sliding key 7. A ball body 36 is provided in the spherical groove 37. When the sliding key 7 moves in the key slot 8, the two sides of the ball body 36 are respectively rolled in the ball tracks 35 and the spherical grooves 37. The spherical grooves 37 on both sides of the sliding key 7 can make the ball body 36 universally rotate therein, and secondly, the ball body 36 can be fixed in the spherical grooves 37. When the sliding key 7 moves, the ball body 36 is driven to move together, thereby converting the sliding friction between the sliding key 7 and the key slot 8 into the rolling friction of the ball body 36, reducing the friction during movement, thereby improving the driving efficiency, and also improving the control accuracy.

[0038] like Figure 2 As shown, the driving part 9 is arranged in the crossbeam 3, and the driving part 9 includes a reduction motor 11, a worm wheel 12, and a worm 13. The worm wheel 12 is rotatably connected and arranged in a guide block 10. In actual use, thrust bearings can also be arranged at both ends of the worm wheel 12, so that the worm wheel 12 can rotate more smoothly and the position positioning is accurate. The inner ring of the worm wheel 12 has an internal thread, and the worm wheel 12 is screwed to the threaded rod 5 through the internal thread. The output end of the reduction motor 11 is connected to the worm 13, and the worm 13 is meshed with the outer ring of the worm wheel 12. When in use, the reduction motor 11 is electrically connected to the control end. When the reduction motor 11 is controlled to operate, the worm 13 drives the worm wheel 12 to rotate, thereby driving the threaded rod 5 to extend or retract and then controlling the rotation of the connecting plate 4.

[0039] As another embodiment, the telescopic rod structure can also be replaced by a cylinder or an electric telescopic rod, which is fixed to the side of the beam 3 when in use. It should be noted that its free end still needs to be rotationally connected to the sliding key 7.

[0040] Embodiment 2: Based on the above structure, an angle indicating structure can also be provided, such as Figure 1As shown, the angle indicating structure has a pointer 30 and an angle scale 31. The angle scale 31 is distributed in an arc shape on the back side of the key slot 8 provided on the connecting plate 4. The pointer 30 is fixedly provided at the end of the beam 3. The pointer 30 cooperates with the angle scale 31 to indicate the inclination angle of the gun head 2. When the connecting plate 4 rotates, the angle scale 31 rotates. The position of the pointer 30 is fixed at the end of the beam 3, so that the angle scale 31 can rotate relative to the pointer 30 to indicate the deflection angle. During use, the required cutting angle of the gun head 2 can be accurately controlled by observing the angle indicating structure. In actual use, when the gun head 2 rotates under the control of the angle control structure, the actual angle of the gun head 2 can be conveniently and intuitively seen from the angle scale on the side.

[0041] Embodiment three, as Figure 1 As shown, the gun head 2 needs to be lifted and lowered to adjust the height during the cutting process. The lifting mechanism 14 is used to control the up and down lifting of the beam 3. A connecting block 15 and a nut structure 16 are provided on the side of the end of the beam 3 away from the gun head 2. The lifting mechanism 14 includes a guide rod 17, a lifting screw 18, and a driving motor 19. The guide rod 17 is arranged in parallel with the lifting screw 18. The upper and lower ends of the guide rod 17 are respectively fixed on the fixed block 20. The two ends of the lifting screw 18 are rotatably connected with the fixed blocks 20 on both sides. The driving motor 19 is arranged on the fixed block 20, and its output end drives the lifting screw 18 to rotate. The connecting block 15 is slidably connected to the guide rod 17. The nut structure 16 is threadedly connected with the lifting screw 18. The lifting screw 18 is controlled to rotate by the driving motor 19, thereby pushing the nut structure 16 and the connecting block 15 to move up and down, thereby driving the lifting and moving of the beam 3; a linear bearing 38 is also provided in the connecting block 15, and the connecting block 15 is slidably connected to the guide rod 17 through the linear bearing 38. The linear bearing 38 can reduce the sliding resistance and make the movement more precise.

[0042] During use, if the cross beam 3 is driven up and down only by the driving motor 19, the nut structure 16 must be moved from one end of the lifting screw 18 to the other end accompanied by the continuous rotation of the lifting screw 18. Its movement is relatively slow and is not conducive to control when the machine is stopped. As an improvement, when the machine is stopped, the clutch structure can be used to manually control the separation and combination of the nut structure 16 to quickly lift and lower the cross beam 3, which is convenient for maintenance or when a large adjustment is required. The nut structure 16 can be formed by connecting two half nuts 23 separated in the middle. The inner circle of the half nut 23 is half a nut inner thread. After the two half nuts 23 are connected, a complete nut inner thread can be formed to be threadedly connected to the lifting screw 18; specifically, Figure 4 , Figure 5As shown, the clutch structure includes a mounting plate 21, the mounting plate 21 is fixedly connected to the side of the connecting block 15, the mounting plate 21 is extended to the side of the lifting screw 18, and a guide groove 22 is provided inside the mounting plate 21 extending to the lifting screw 18; Figure 6 As shown, a slider 24 placed in the guide groove 22 is provided on the side of the half nut 23, and the two half nuts 23 are symmetrically placed in the guide groove 22. The two half nuts 23 can move towards or away from the lifting screw 18 in a mirror-image manner under the guidance of the slider 24. A spring 25 is provided between the side of the two half nuts 23 that is away from each other and the end surface of the guide groove 22. In the free state, the two half nuts 23 are pressed from both sides by the spring 25 under the pressure of the spring 25, so that they always maintain the state of the completed nut structure 16, that is, they are always screwed with the lifting screw 18, so as to facilitate automatic control. When manual adjustment is required, the two half nuts 23 can be pushed to both sides by the clutch structure. Figure 4 As shown in state (a), the nut structure 16 is disengaged from the lifting screw 18. It is worth noting that after disengagement, the beam 3 can rotate with the guide rod 17 as the center. If the user needs to avoid this rotation, an additional guide rod 17 can be set to solve the problem. The user can also use this rotation to adjust the angle of the beam 3.

[0043] Specifically, Figure 4 , Figure 5 As shown, the clutch structure also includes a cam driving structure for driving the two half nuts 23 to move in mirror image. The cam driving structure is rotatably connected and arranged on the side of the mounting plate 21 and includes a symmetrical cam 26 and a handle 27. The end of the symmetrical cam 26 is fixedly connected and arranged with the handle 27. The symmetrical cam 26 is rotatably connected and arranged in the middle of the two half nuts 23. The end surfaces of the two half nuts 23 are both vertically fixed with a push rod 28. The symmetrical cam 26 is an elliptical cam structure with two pointed ends, and the pointed ends on both sides are concavely provided with a limiting groove 29. Figure 5 (a) shows that in the free state, the half nuts 23 on both sides are pressed against each other and screwed on the lifting screw 18 by the pressure of the spring 25. At this time, the narrow side of the symmetrical cam 26 is located between the two push rods 28 and will not push the half nuts 23 to move; Figure 5 In (b), the symmetrical cam 26 is rotated by the handle 27 so that the two tips of its wide end are against the push rod 28, so that the half nuts 23 on both sides can be pushed apart by a certain distance to disengage from the lifting screw 18, and the crossbeam 3 can move up and down freely.

[0044] The present invention and its implementation methods are described above, and such description is not restrictive. The specific implementation methods are only part of the embodiments of the present invention, not all of the embodiments, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and implementation method similar to the technical solution without creativity, which should fall within the protection scope of the present invention.

Claims

1. A flame cutting machine gun head connection tooling, comprising a gun barrel sleeve and a gun head, wherein the gun head is fixed in the gun barrel sleeve, and is characterized in that: It also includes a crossbeam and a connecting plate, one end of the crossbeam is hingedly connected to the connecting plate, the connecting plate is fixedly connected to the gun barrel sleeve on a side wall away from the crossbeam, and the cutting angle of the gun head is adjusted by rotating the connecting plate relative to the crossbeam, and an angle control structure is also provided on the crossbeam; The angle control structure includes a keyway, a sliding key, and a telescopic rod structure. The keyway is a recessed groove arranged on the side of the connecting plate. The sliding key is placed in the keyway for sliding connection. The telescopic rod structure is arranged on the crossbeam and can controllably telescopically move along the direction in which the crossbeam is arranged. The end of the telescopic rod structure is connected to the sliding key. The telescopic rod structure includes a threaded rod, a connecting rod, and a driving part. At least two guide blocks are fixedly provided on the lower side of the crossbeam. The threaded rod passes through the guide block and is slidably connected thereto and can be telescopically moved along the crossbeam direction under the control of the driving part. One end of the threaded rod facing the keyway is connected to the sliding key through a connecting rod. The connecting rod is fixedly connected to the threaded rod, and the other end of the connecting rod is rotatably connected to the keyway. The driving part includes a reduction motor, a worm wheel, and a worm. The worm wheel is rotatably connected and arranged in a guide block, and the inner ring of the worm wheel has an internal thread. The worm wheel is screwed to the threaded rod through the internal thread. The output end of the reduction motor is connected to the worm, and the worm is meshed with the outer ring of the worm wheel. It also includes a lifting mechanism for controlling the vertical lifting of the crossbeam. A connecting block and a nut structure are provided on the side of the end of the crossbeam away from the gun head. The lifting mechanism includes a guide rod, a lifting screw, and a driving motor. The guide rod is arranged in parallel with the lifting screw. The upper and lower ends of the guide rod are respectively fixed on the fixed blocks. The two ends of the lifting screw are rotatably connected with the fixed blocks on both sides. The driving motor is arranged on the fixed block, and its output end drives the lifting screw to rotate. The connecting block is slidably connected to the guide rod, and the nut structure is threadedly connected with the lifting screw. It also includes a clutch structure for controlling the engagement and separation of the nut structure and the lifting screw, the clutch structure includes a mounting plate, the mounting plate is fixedly connected to the side of the connection block, the mounting plate is extended to one side of the lifting screw, and a guide groove is provided inside the mounting plate extending to the lifting screw; the nut structure can be formed by connecting two half nuts separated in the middle, and a slider placed in the guide groove is provided on the side of the half nut, and the two half nuts can move towards or away from the lifting screw in a mirror motion under the guidance of the slider, and a spring is provided between the side of the two half nuts away from each other and the end surface of the guide groove; The clutch structure also includes a cam driving structure that drives the two half nuts to move in mirror image. The cam driving structure is rotatably connected and arranged on the side of the mounting plate and includes a symmetrical cam and a handle. The end of the symmetrical cam is fixedly connected with a handle. The symmetrical cam is rotatably connected and arranged in the middle part of the two half nuts. Both end faces of the two half nuts are vertically fixed with a push rod. The symmetrical cam is an elliptical cam structure with two pointed ends, and the pointed ends on both sides are concave with limit grooves.

2. The flame cutting machine gun head connection tooling according to claim 1, characterized in that: It also includes an angle indicating structure, which has a pointer and an angle scale. The angle scale is distributed in an arc shape on the back of the key slot of the connecting plate. The pointer is fixed at the end of the beam. The pointer cooperates with the angle scale to indicate the inclination angle of the gun head.

3. The flame cutting machine gun head connection tooling according to claim 1, characterized in that: A guide groove is provided on the side wall along the length direction of the threaded rod, and a clamping key placed in the guide groove is protruded from the inner wall of the guide block where the driving part is not provided, and the clamping key is used to prevent the threaded rod from rotating.

4. The flame cutting machine gun head connection tooling according to claim 1, characterized in that: The gun barrel sleeve is in the shape of a hollow cylinder and has an opening on one side away from the connecting plate. Connecting ears are respectively provided on both sides of the opening, and hand screws are passed through the connecting ears. The connecting ears on one side of the opening are provided with a through hole for the screws to pass through, and the connecting ears on the other side are provided with a threaded hole for screwing with the screws.

5. The flame cutting machine gun head connection tooling according to claim 1, characterized in that: Ball tracks are provided on both sides of the keyway, spherical grooves are provided on both sides of the sliding key for placing balls, and a ball body is provided in the spherical groove. When the sliding key moves in the keyway, the two sides of the ball body roll in the ball tracks and the spherical groove respectively.

6. The flame cutting machine gun head connection tooling according to claim 1, characterized in that: A linear bearing is also arranged in the connecting block, and the connecting block is slidably connected to the guide rod through the linear bearing.

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