All-position welding device for boiler tubes with different diameters

Abstract

The present disclosure provides an all-position welding device for boiler tubes of different diameters, comprising: a fixing assembly, at least two sets of clamping assemblies, and a welding gun body, wherein the fixing assembly comprises two fixed circular rails, a brake ring, and at least two fixed mounting blocks, wherein the two fixed circular rails are spaced apart, and the at least two fixed mounting blocks are connected between the two fixed circular rails at intervals along the circumference of the fixed circular rails, the brake ring is rotatably connected to the side of the first fixed circular rail facing away from the second fixed circular rail, the clamping assembly is connected to the corresponding fixed mounting block in a manner that is movable along the radial direction of the fixed circular rail, the brake ring can drive the clamping assembly to perform linear motion, and the welding gun body is connected to the fixed circular rail in a manner that is rotatable along the circumference of the fixed circular rail and movable along the radial direction of the fixed circular rail. The welding device disclosed in the present disclosure can achieve stable circumferential welding, with stable welding, high welding processing efficiency, and safe welding processing. It can also weld boiler tubes of different diameters and has a wide range of applications.

Description

Technical Field

[0001] The embodiments of the present disclosure belong to the technical field of welding equipment, and particularly relate to an all-position welding device for boiler tubes with different diameters. Background Art

[0002] In traditional welding processes, welders usually perform welding manually. Welders hold welding torches for long periods of time, which is labor-intensive and prone to fatigue. The welding quality depends largely on the welder's operating skills and experience. The welding process is unstable and the welding speed is relatively slow, affecting production efficiency. Especially when welding pipelines, the welder's working position needs to change in real time, which increases the difficulty of manual operation and cannot guarantee processing safety. Summary of the Invention

[0003] The embodiments of the present disclosure aim to solve at least one of the technical problems existing in the prior art and provide an all-position welding device for boiler tubes with different diameters.

[0004] An embodiment of the present disclosure provides an all-position welding device for boiler tubes of different diameters, comprising: a fixing assembly, the fixing assembly comprising a first fixed circular rail, a second fixed circular rail, a brake ring, and at least two fixed mounting blocks, the first fixed circular rail and the second fixed circular rail being spaced apart, the at least two fixed mounting blocks being spaced apart and connected between the first fixed circular rail and the second fixed circular rail along the circumference of the first fixed circular rail, the brake ring being rotatably connected to a side of the first fixed circular rail facing away from the second fixed circular rail;

[0005] At least two groups of clamping assemblies, each of the clamping assemblies being arranged in a one-to-one correspondence with the fixed mounting block, the clamping assemblies being connected to the fixed mounting block in a manner movable along a radial direction of the fixed assembly, and the brake ring being capable of driving the clamping assemblies to perform linear motion;

[0006] A welding gun body is connected to the second fixed circular rail in a manner of being rotatable along the circumference of the second fixed circular rail and being movable along the radial direction of the fixing assembly.

[0007] In some embodiments of the present disclosure, a plurality of first fixed shafts and a plurality of drive arc rails are provided on one side of the brake ring close to the first fixed circular rail, the plurality of first fixed shafts are spaced and evenly arranged along the circumference of the first fixed circular rail, each of the drive arc rails is rotatably connected to one of the first fixed shafts, the drive arc rails are slidably connected to the clamping assembly, and the drive arc rails can drive the clamping assembly to perform linear motion.

[0008] In some embodiments of the present disclosure, the clamping assembly includes:

[0009] a sliding rod, the sliding rod being provided through the fixed mounting block in a manner of moving along the radial direction of the fixed assembly, the driving arc track being slidably connected to the sliding rod;

[0010] A movable block connected to one end of the sliding rod close to the center of the fixed circular rail;

[0011] A top spring is sleeved on the sliding rod, and two ends of the top spring are respectively in contact with the end of the sliding rod and the fixed installation block.

[0012] In some embodiments of the present disclosure, the clamping assembly further comprises:

[0013] A plurality of contact rollers are rotatably arranged at one end of the movable block away from the sliding rod, and the plurality of contact rollers form an arc structure.

[0014] In some embodiments of the present disclosure, the all-position welding device for boiler tubes with different diameters further includes a support assembly, wherein the support assembly includes:

[0015] a rotating rod body, the rotating rod body being rotatably connected to the first fixed shaft;

[0016] a second fixed shaft, the second fixed shaft being rotatably connected to a side of the second fixed circular rail facing away from the first fixed circular rail, the rotating rod passing through the second fixed shaft;

[0017] a swing plate connected to the second fixed shaft;

[0018] A universal ball is provided at one end of the swing plate away from the second fixed shaft.

[0019] In some embodiments of the present disclosure, the support assembly further comprises:

[0020] a rotating collar, the rotating collar being rotatably sleeved on the second fixed shaft, the swing plate being rotatably connected to the second fixed shaft, the swing plate having a groove body, the rotating collar being located at an end of the groove body away from the universal ball;

[0021] A blocking plate is provided at an end of the swing plate away from the universal ball, and the blocking plate is provided at the outer side of the swing plate.

[0022] In some embodiments of the present disclosure, the all-position welding device for boiler tubes with different diameters further includes:

[0023] a third fixed shaft, the third fixed shaft being arranged at an end of the second fixed circular rail away from the first fixed circular rail;

[0024] a mounting plate connected to an end of the third fixed shaft facing away from the second fixed circular rail;

[0025] a mounting frame protruding from an edge of the mounting plate along a circumference of the mounting plate;

[0026] a drive motor, the drive motor being arranged on a side of the mounting frame away from the second fixed circular rail;

[0027] A driving gear, the driving motor is drivingly connected to the driving gear, and the driving gear is located in the accommodation space formed by the mounting frame;

[0028] A welding ring seat is installed inside the mounting plate, the peripheral side of the welding ring seat has a tooth pressure engaged with the driving gear, and the welding gun body is connected to the welding ring seat in a manner that is movable relative to the welding ring seat.

[0029] In some embodiments of the present disclosure, the all-position welding device for boiler tubes with different diameters further includes:

[0030] a support plate, the support plate being arranged on a side of the welding ring seat away from the second fixed circular rail, the support plate extending in a direction away from the welding ring seat;

[0031] A limiting column, the limiting column is arranged on a side of the support plate away from the center of the welding ring seat;

[0032] A fixed top plate, the fixed top plate being fixedly arranged on one end of the limiting column away from the support plate;

[0033] a positioning bolt, the positioning bolt being threadably connected to the fixed top plate, one end of the positioning bolt being located on a side of the fixed top plate facing away from the support plate;

[0034] A lifting plate, the lifting plate being slidably connected to the limiting column, the lifting plate being located between the fixed top plate and the support plate, and the other end of the positioning bolt being connected to the lifting plate;

[0035] A connecting frame is connected to the lifting plate, the connecting frame is located between the support plate and the connecting frame, and the welding gun body is installed in the connecting piece.

[0036] In some embodiments of the present disclosure, the all-position welding device for boiler tubes with different diameters further includes:

[0037] Engaging tooth grooves, the engaging tooth grooves are provided on the circumferential inner wall of the brake ring;

[0038] a brake gear, the brake gear being rotatably connected to the first fixed circular rail, the brake gear being engaged with the meshing tooth groove;

[0039] The brake plate is movably arranged on the outside of the brake gear. When the brake plate contacts the brake gear, the brake gear stops. When the brake plate is out of contact with the brake gear, the brake gear rotates.

[0040] In some embodiments of the present disclosure, the all-position welding device for boiler tubes with different diameters further includes:

[0041] a fixed frame, the fixed frame being fixedly connected to a side of the first fixed circular rail facing away from the second fixed circular rail, the brake plate being arranged between the fixed frame and the brake gear;

[0042] A push-pull rod, wherein the push-pull rod is passed through the fixed frame, and one end of the push-pull rod is connected to the brake plate;

[0043] A rotating positioning rod connected to the other end of the push-pull rod;

[0044] a stopper, the stopper being fixedly disposed in the fixed frame, and the push-pull rod being passed through the stopper;

[0045] A return spring, wherein the return spring is sleeved on the push-pull rod, and two ends of the return spring respectively abut against one end of the fixed frame close to the brake plate and the stop block;

[0046] A card plate is sleeved on the push-pull rod, and the card plate is located between the stop block and the rotation positioning rod. One end of the fixed frame away from the brake plate is provided with a cross through hole that matches the shape of the card plate.

[0047] The disclosed embodiment of an all-position welding device for boiler tubes of different diameters includes a fixed assembly, at least two sets of clamping assemblies, and a welding gun body, wherein the fixed assembly includes a first fixed circular rail and a second fixed circular rail that are arranged oppositely and at intervals, and at least two fixed mounting blocks are provided between the first fixed circular rail and the second fixed circular rail to mount the clamping assembly. Specifically, the fixed mounting blocks are the same in number as the clamping assemblies and are arranged in a one-to-one correspondence. The clamping assembly is inserted into the fixed mounting block so that the at least two sets of clamping assemblies clamp the boiler tube along the circumference of the boiler tube to fix the boiler tube. At the same time, the clamping assembly can be inserted into the fixed mounting block in a radially movable manner along the fixed assembly. By moving the position of the clamping assembly, the clamping assembly can adapt to boiler tubes of different diameters, thereby expanding the scope of application of the welding device. By providing a brake ring, the at least two sets of clamping assemblies can be driven to move linearly along the radial direction of the fixed assembly, thereby simplifying the clamping operation steps, saving the installation time of the welding device, and improving the welding efficiency of the welding device. By arranging the welding gun body on the second fixed circular rail so as to be rotatable along the circumference of the second fixed circular rail, the welding gun body can be used to weld the boiler tube installed in the welding device along the circumference of the boiler tube. Furthermore, by connecting the welding gun body to the second fixed circular rail so as to be movable along the radial direction of the fixed assembly, the welding gun body can be used to weld the boiler tube installed in the welding device along the radial direction of the boiler tube. That is, the welding device can weld the boiler tube along the circumference of the boiler tube, and also ensure that the welding device can weld the boiler tube along the radial direction of the boiler tube, thereby ensuring that the welding device can weld different positions of the boiler tube. The welding device of this embodiment is fixed and clamped by the fixed assembly and the clamping assembly, achieving stable welding of the boiler tube and improving welding safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a schematic diagram of the three-dimensional structure of the all-position welding device for boiler tubes with different diameters according to the present invention;

[0049] Figure 2 for Figure 1 A top view of an all-position welding device for boiler tubes of different diameters is shown;

[0050] Figure 3 for Figure 1 A front view of an all-position welding device for boiler tubes of different diameters is shown;

[0051] Figure 4 for Figure 2 Schematic diagram of the position of the swing plate shown;

[0052] Figure 5 for Figure 4 Schematic diagram of the driving arc track structure shown;

[0053] Figure 6for Figure 1 A local enlarged structural diagram is shown;

[0054] Figure 7 for Figure 1 The schematic diagram of the local enlarged structure of point B is shown;

[0055] Figure 8 for Figure 3 The schematic diagram of the local enlarged structure at point C is shown.

[0056] The reference numerals in the accompanying drawings represent the following:

[0057] 1-1, first fixed circular rail; 1-2, second fixed circular rail; 2, fixed mounting block; 3, sliding rod; 4, top spring; 5, movable frame; 6, contact roller; 7, brake ring; 8, operating handle; 9, first fixed shaft; 10, driving arc rail; 11, arc groove; 12, rotating rod body; 13, second fixed shaft; 14, blocking plate; 15, swing plate; 16, universal ball; 17, mounting plate; 18, third fixed shaft; 19, mounting frame; 20, driving gear; 21. Driving motor; 22. Through hole; 23. Support plate; 24. Limiting column; 25. Lifting plate; 26. Connecting frame; 27. Welding gun body; 28. Positioning bolt; 29. ​​Engaging tooth groove; 30. Fourth fixed axis; 31. Brake gear; 32. Fixed frame; 33. Push-pull rod; 34. Stop block; 35. Brake plate; 36. Return spring; 37. Clamping plate; 38. Rotating positioning rod; 39. Rotating collar; 40. Welding ring seat; 41. Fixed top plate. DETAILED DESCRIPTION

[0058] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0059] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of the stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The control method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0060] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0061] For ease of description, spatially relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," and the like. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped, an element described as "below" or "beneath" another element or feature would then be oriented as "above" or "above" the other element or feature. Thus, the example term "below" can encompass both above and below orientations. The device may be otherwise oriented (rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein are interpreted accordingly.

[0062] like Figures 1 to 8As shown, an embodiment of the present disclosure provides an all-position welding device for boiler tubes with different diameters, comprising: a fixing assembly, at least two groups of clamping assemblies and a welding gun body 27. Specifically, the fixing assembly comprises a first fixed circular rail 1-1, a second fixed circular rail 1-2, a brake ring 7 and at least two fixed mounting blocks 2. The first fixed circular rail 1-1 and the second fixed circular rail 1-2 are arranged at intervals, and at least two fixed mounting blocks 2 are connected between the first fixed circular rail 1-1 and the second fixed circular rail 1-2 at intervals along the circumference of the first fixed circular rail 1-1. The fixed mounting blocks 2 are arranged in a one-to-one correspondence with the clamping assembly. The clamping assembly is connected to the fixed mounting block 2 in a manner that is movable along the radial direction of the fixing assembly. The brake ring 7 is rotatably connected to the side of the first fixed circular rail 1-1 away from the second fixed circular rail 1-2. The brake ring 7 can drive the clamping assembly to move linearly. The welding gun body 27 is connected to the second fixed circular rail 1-2 in a manner that is rotatable along the circumference of the second fixed circular rail 1-2 and movable along the radial direction of the fixing assembly.

[0063] The disclosed embodiment of an all-position welding device for boiler tubes of different diameters includes a fixed assembly, at least two sets of clamping assemblies, and a welding gun body 27. The fixed assembly includes a first fixed circular rail 1-1 and a second fixed circular rail 1-2 arranged oppositely and spaced apart. At least two fixed mounting blocks 2 are provided between the first fixed circular rail 1-1 and the second fixed circular rail 1-2 for mounting the clamping assemblies. Specifically, the fixed mounting blocks 2 are equal in number to the clamping assemblies and are arranged in a one-to-one correspondence. The clamping assemblies are inserted through the fixed mounting blocks 2 so that the at least two sets of clamping assemblies clamp the boiler tube along the circumference of the boiler tube to fix the boiler tube. At the same time, the clamping assemblies are inserted through the fixed mounting blocks 2 in a radially movable manner along the fixed assembly. By moving the position of the clamping assemblies, the clamping assemblies can be adapted to boiler tubes of different diameters, thereby expanding the scope of application of the welding device. The provision of a brake ring 7 can drive the at least two sets of clamping assemblies to move linearly along the radial direction of the fixed assembly, thereby simplifying the clamping operation steps, saving installation time of the welding device, and improving the welding efficiency of the welding device. By arranging the welding gun body 27 on the second fixed circular rail 1-2 so as to be rotatable along the circumference of the second fixed circular rail 1-2, the welding gun body 27 can be used to weld the boiler tube installed in the welding device along the circumference of the boiler tube. Furthermore, by connecting the welding gun body 27 to the second fixed circular rail 1-2 so as to be movable along the radial direction of the fixed assembly, the welding gun body 27 can be used to weld the boiler tube installed in the welding device along the radial direction of the boiler tube. That is, the welding device can weld the boiler tube along the circumference of the boiler tube, and also ensure that the welding device can weld the boiler tube along the radial direction of the boiler tube, thereby ensuring that the welding device can weld different positions of the boiler tube. The welding device of this embodiment is fixed and clamped by the fixed assembly and the clamping assembly, achieving stable welding of the boiler tube and improving welding safety.

[0064] The first fixed circular rail 1-1 and the second fixed circular rail 1-2 in the present embodiment have the same structure and the same size, and the first fixed circular rail 1-1 and the second fixed circular rail 1-2 are both annular structures. When the first fixed circular rail 1-1 and the second fixed circular rail 1-2 are arranged at intervals, the first fixed circular rail 1-1 and the second fixed circular rail 1-2 are concentrically arranged. The structure of the brake ring 7 is annular structure, and the brake ring 7 is concentrically arranged with the first fixed circular rail 1-1, and the outer diameter of the brake ring 7 is greater than the outer diameter of the first fixed circular rail 1-1. An operating handle 8 can be provided on the circumferential outside of the brake ring 7 for ease of operation. An operating handle 8 can also be provided on the circumferential outside of the first fixed circular rail 1-1, and / or an operating handle 8 can be provided on the circumferential outside of the second fixed circular rail 1-2.

[0065] like Figure 1 、 Figure 4 and Figure 5 As shown, in some embodiments of the present disclosure, a plurality of first fixed shafts 9 are provided on a side of the brake ring 7 close to the first fixed circular rail 1-1, and a plurality of first fixed shafts 9 are arranged on the circumferential outside of the first fixed circular rail 1-1 along the circumference of the first fixed circular rail 1-1. A plurality of drive arc tracks 10 are provided on a side of the brake ring 7 close to the first fixed circular rail 1-1, and the number of the plurality of drive arc tracks 10 is the same as that of the plurality of first fixed shafts 9, and they are arranged in a one-to-one correspondence. Specifically, the drive arc track 10 is rotatably connected to the corresponding first fixed shaft 9, and the drive arc track 10 extends in the direction of the fixed mounting block 2. The drive arc track 10 is slidably connected to the clamping assembly to drive the clamping assembly to perform linear motion along the radial direction of the first fixed circular rail 1-1. By rotating the brake ring 7, the plurality of first fixed shafts 9 can be rotated with the brake ring 7 to drive the plurality of drive arc tracks 10 to move, and each drive arc track 10 drives the corresponding clamping assembly to move, thereby realizing simultaneous control of the plurality of clamping assemblies and improving the efficiency and accuracy of the welding device installation. Since the first fixed circular rail 1-1, the second fixed circular rail 1-2 and the brake ring 7 of the fixed assembly are all concentrically arranged, the first fixed circular rail 1-1, the second fixed circular rail 1-2, the brake ring 7 and the central axis of the fixed assembly are aligned. The radial direction of the fixed assembly is the perpendicular direction from the edge of the fixed assembly to the central axis of the fixed assembly.

[0066] In some embodiments of the present disclosure, the clamping assembly includes: a sliding rod 3, a movable block and a top spring 4. Specifically, the sliding rod 3 is arranged along the radial direction of the fixed assembly, the sliding rod 3 is movably inserted into the fixed mounting block 2, and the top spring 4 is sleeved on the sliding rod 3, and the two ends of the top spring 4 respectively abut against the end of the sliding rod 3 and the fixed mounting block 2. The movable block is connected to one end of the sliding rod 3 close to the center of the fixed circular rail, that is, the movable block is located on the side of the fixed mounting block 2 away from the top spring 4, and the driving arc track 10 is slidably connected to the sliding rod 3 through the arc groove 11, and the end of the driving arc track 10 away from the first fixed shaft 9 is located between the movable block and the fixed mounting block 2. By rotating the brake ring 7, the brake ring 7 drives the first fixed shaft 9 to rotate, and the first fixed shaft 9 drives one end of the driving arc track 10 to rotate, and the other end of the driving arc track 10 slides between the movable blocks of the fixed mounting block 2. Since the width of the driving arc track 10 gradually increases along the direction from the clamping assembly to the corresponding first fixed axis 9, when the brake ring 7 drives the driving arc track 10 to move toward the corresponding clamping assembly through the first fixed axis 9, the driving arc track 10 gradually increases the distance between the fixed mounting block 2 and the movable block, thereby bringing the movable block closer to the center of the fixed assembly to clamp the boiler tube; when the brake ring 7 drives the driving arc track 10 to move away from the corresponding clamping assembly through the first fixed axis 9, the driving arc track 10 gradually reduces the distance between the fixed mounting block 2 and the movable block, thereby bringing the movable block further away from the center of the fixed assembly, thereby increasing the clamping space between multiple movable blocks to release the clamping of the boiler tube. By rotating the brake ring 7 at different angles, the center distance between the movable block and the fixed assembly can be adjusted, thereby adjusting the size of the boiler tube clamped by the clamping assembly.

[0067] In some embodiments of the present disclosure, the clamping assembly further comprises a plurality of contact rollers 6 , each formed into an arc-shaped structure. The arc-shaped contact rollers 6 are concave toward the central axis of the fixed assembly to accommodate the shape of the boiler tube. The contact rollers 6 are rotatably mounted on the end of the movable block facing away from the sliding rod 3 . The contact rollers 6 reduce friction between the movable block and the outer wall of the boiler tube, thereby increasing the service life of the movable block.

[0068] like Figure 1 、 Figure 4 and Figure 6As shown, in some embodiments of the present disclosure, the all-position welding apparatus for boiler tubes of varying diameters further includes a support assembly, which is disposed on the side of the second fixed circular rail 1-2 facing away from the first fixed circular rail 1-1. Specifically, the support assembly includes a rotating rod 12, a second fixed shaft 13, a swing plate 15, and a universal ball 16. The second fixed shaft 13 is rotatably connected to the side of the second fixed circular rail 1-2 facing away from the first fixed circular rail 1-1. One end of the rotating rod 12 is rotatably connected to the first fixed shaft 9, and the other end of the rotating rod 12 extends through the second fixed shaft 13. The swing plate 15 is connected to the second fixed shaft 13, and the universal ball 16 is disposed at the end of the swing plate 15 facing away from the second fixed shaft 13. When the brake ring 7 drives the first fixed shaft 9 to rotate, the first fixed shaft 9 rotates one end of the rotating rod 12, which in turn rotates the other end of the rotating rod 12, which in turn rotates the second fixed shaft 13. The second fixed shaft 13 rotates the swing plate 15, thereby ensuring that the end of the swing plate 15 equipped with the universal ball 16 contacts the outer wall of the installed boiler tube. When the boiler tube is installed in the welding device, the support assembly supports the boiler tube. When welding is required at different positions of the boiler tube, the boiler tube is moved along the axial direction of the fixing assembly, and the support assembly supports the boiler tube. At the same time, the universal ball 16 is arranged at the end of the swing plate 15 away from the second fixed shaft 13, which can reduce the friction between the swing plate 15 and the outer wall of the boiler tube.

[0069] In some embodiments of the present disclosure, the support assembly further comprises a rotating collar 39 and a blocking plate 14. The rotating collar 39 is rotatably mounted on the second fixed shaft 13. The swing plate 15 is rotatably connected to the second fixed shaft 13. The swing plate 15 covers the rotating collar 39. The rotating collar 39 is located at the end of the swing plate 15 facing away from the universal ball 16. The swing plate 15 has a slot. The rotating rod 12 is inserted through the second fixed shaft 13 and the rotating rod 12 is inserted through the rotating collar 39. The end of the swing rod facing away from the first fixed shaft 9 is located within the slot defined in the swing plate 15. When the first fixed shaft 9 drives the rotating rod body 12 to rotate, the end of the rotating rod body 12 away from the first fixed shaft 9 drives the second fixed shaft 13 and the rotating collar 39 to rotate under the restriction of the second fixed shaft 13. At the same time, the rotating rod body 12 slides in the groove of the swing rod. When the rotating rod body 12 rotates to contact the blocking plate 14 on the outside of the swing rod, the rotating rod body 12 drives the blocking plate 14 to rotate together. The blocking plate 14 drives the swing plate 15 connected thereto to rotate, and the universal ball 16 of the swing plate 15 contacts the outer wall of the boiler tube.

[0070] like Figure 1 、 Figure 2 、 Figure 3 and Figure 7As shown, in some embodiments of the present disclosure, the all-position welding device for boiler tubes with different diameters further includes: a third fixed shaft 18, a mounting plate 17, a mounting bracket 19, a drive motor 21, a driving gear 20, and a welding ring seat 40. Specifically, the third fixed shaft 18 is provided at the end of the second fixed circular rail 1-2 away from the first fixed circular rail 1-1, and the third fixed shaft 18 extends along the axis of the fixing assembly. The two ends of the third fixed shaft 18 are respectively connected to the second fixed circular rail 1-2 and the mounting plate 17, that is, a space is formed between the mounting plate 17 and the second fixed circular rail 1-2, and the support assembly is provided between the mounting plate 17 and the second fixed circular rail 1-2. The mounting bracket 19 is provided on the peripheral edge of the mounting plate 17, and the mounting bracket 19 protrudes from the peripheral edge of the mounting plate 17. The mounting bracket 19 has an installation space for installing the driving gear 20. The top of the mounting plate 17 is provided with a through hole 22, which is connected to the installation space of the mounting bracket 19 to facilitate the meshing connection between the driving gear 20 and the welding ring seat 40. A drive motor 21 is provided on the side of the mounting frame 19 facing away from the second fixed circular rail 1-2. The output end of the drive motor 21 extends into the mounting space of the mounting frame 19 and is drivenly connected to the driving gear 20. The mounting plate 17 is annular in structure, and a welding ring holder 40 is connected thereto. The welding ring holder 40 is annular in structure and rotatably connected to the mounting plate 17. The welding ring holder 40 has teeth on its circumference that mesh with the driving gear 20. The welding gun body 27 is movably connected to the welding ring holder 40 relative to the welding ring holder 40. The drive motor 21 drives the driving gear 20 to rotate, which in turn rotates the meshing welding ring holder 40, which in turn rotates the welding gun body 27, thereby enabling the welding gun body 27 to weld the boiler tube along the circumference of the boiler tube. Furthermore, the welding gun body 27 can move radially relative to the welding ring holder 40, thereby enabling radial welding of the boiler tube.

[0071] In some embodiments of the present disclosure, the all-position welding device for boiler tubes of different diameters further includes: a support plate 23, a limiting column 24, a fixed top plate 41, a positioning bolt 28, a lifting plate 25, and a connecting frame 26. Specifically, the support plate 23 is disposed on a side of the welding ring seat 40 that faces away from the second fixed circular rail 1-2. The support plate 23 extends away from the welding ring seat 40 and extends to the outside of the mounting plate 17, so that the welding gun body 27 is disposed on the side of the mounting plate 17 that faces away from the second fixed circular rail 1-2. The limiting column 24 is arranged on the side of the support plate 23 away from the center of the welding ring seat 40, and the extending direction of the limiting column 24 is the radial direction of the welding ring seat 40. The fixed top plate 41 is fixedly arranged on the end of the limiting column 24 away from the support plate 23. The positioning bolt 28 is threadedly connected to the fixed top plate 41. One end of the positioning bolt 28 is located on the side of the fixed top plate 41 away from the support plate 23, and the other end of the positioning bolt 28 is located on the side of the fixed top plate 41 close to the support plate 23 and is connected to the lifting plate 25. The lifting plate 25 is slidably connected to the limiting column 24. The lifting plate 25 is located between the fixed top plate 41 and the support plate 23. The connecting frame 26 is connected to the lifting plate 25. The connecting frame 26 is located between the support plate 23 and the connecting frame 26. The welding gun body 27 is installed in the connecting piece. By rotating the positioning bolt 28 forward to move it toward the support plate 23, the positioning bolt 28 drives the lifting plate 25 to move along the limiting pillars 24 toward the support plate 23. The lifting plate 25 drives the welding gun body 27 toward the center of the welding ring seat 40, that is, toward the center of the boiler tube, through the connecting frame 26. By rotating the positioning bolt 28 backward to move it away from the support plate 23, the positioning bolt 28 drives the lifting plate 25 along the limiting pillars 24 away from the support plate 23. The lifting plate 25 drives the welding gun body 27 away from the center of the welding ring seat 40, that is, away from the center of the boiler tube, through the connecting frame 26. The relative position of the welding gun body 27 and the boiler tube can be adjusted by the positioning bolt 28, thereby achieving welding at different positions on the boiler tube.

[0072] like Figure 3 and Figure 8As shown, in some embodiments of the present disclosure, the all-position welding device for boiler tubes with different diameters further includes: an engaging tooth groove 29, a brake gear 31, and a brake plate 35. Specifically, the engaging tooth groove 29 is provided on the circumferential inner wall of the brake ring 7, the brake gear 31 is rotatably connected to the first fixed circular rail 1-1 via a fourth fixed shaft 30, the brake gear 31 is engaged with the engaging tooth groove 29, and the brake plate 35 is movably provided on the outer side of the brake gear 31. When the brake plate 35 contacts the brake gear 31, the brake gear 31 is stopped, and when the brake plate 35 is not in contact with the brake gear 31, the brake gear 31 rotates. By moving the brake plate 35 so that the brake plate 35 contacts or abuts the brake gear 31, the brake gear 31 can be prevented from rotating, that is, the brake gear 31 and the engaging tooth groove 29 will not rotate relative to each other, and the first fixed circular rail 1-1 and the brake ring 7 are relatively fixed. By moving the brake plate 35 so that the brake plate 35 is out of contact with the brake gear 31, the brake gear 31 is in a rotatable state, and the meshing tooth groove 29 can drive the brake gear 31 to rotate, so that the brake ring 7 and the first fixed circular rail 1-1 rotate relative to each other.

[0073] like Figure 8 As shown, in some embodiments of the present disclosure, the all-position welding device for boiler tubes with different diameters further includes: a fixed frame 32, a push-pull rod 33, a rotation positioning rod 38, a stopper 34, a return spring 36, and a clamping plate 37. Specifically, the fixed frame 32 is fixedly connected to the side of the first fixed circular rail 1-1 facing away from the second fixed circular rail 1-2, the brake plate 35 is disposed between the fixed frame 32 and the brake gear 31, the push-pull rod 33 is passed through the fixed frame 32, one end of the push-pull rod 33 is connected to the brake plate 35, and the other end of the push-pull rod 33 is connected to the rotation positioning rod 38. The push-pull rod 33 can be used to move the brake plate 35 toward or away from the brake gear 31. The stopper 34 is fixedly mounted within the fixed frame 32, the push-pull rod 33 is passed through the stopper 34, and the return spring 36 is sleeved on the push-pull rod 33 and located within the fixed frame 32. The two ends of the return spring 36 respectively abut one end of the fixed frame 32 near the brake plate 35 and the stopper 34. The cooperation between the stopper and the return spring 36 facilitates the reset of the push-pull rod 33, that is, the movement of the push-pull rod 33 toward the brake gear 31, so that the brake plate 35 abuts the brake gear 31, and the brake gear 31 is in a non-rotating state. The clamping plate 37 is sleeved on the push-pull rod 33 and is located between the stopper 34 and the rotation positioning rod 38. The clamping plate 37 can move in and out of the fixed frame 32. The end of the fixed frame 32 facing away from the brake plate 35 is provided with a cross-shaped through hole that matches the shape of the clamping plate 37, so that the clamping plate 37 can enter and exit the interior of the fixed frame 32.

[0074] When the brake ring 7 needs to rotate relative to the first fixed circular rail 1-1, the rotating positioning rod 38 is moved in the direction away from the brake gear 31, and the rotating positioning rod 38 drives the push-pull rod 33 to move in the direction away from the brake gear 31. As the rotating positioning rod 38 moves, the card plate 37 moves from the cross through hole of the fixed frame 32 to the outside of the fixed frame 32, and the brake plate 35 is separated from the brake gear 31. By rotating the rotating positioning rod 38, the position of the card plate 37 and the cross through hole are not corresponding, that is, the card plate 37 is against the end of the cross frame close to the rotating positioning rod 38, thereby achieving the fixation of the brake plate 35. At this time, the brake ring 7 can be rotated to achieve the relative rotation of the brake ring 7 and the first fixed circular rail 1-1.

[0075] When the brake ring 7 needs to be fixed relative to the first fixed circular rail 1-1, the rotating positioning rod 38 is moved in the direction away from the brake gear 31 to disengage the card plate 37 from one end of the fixed frame 32, and the rotating positioning rod 38 is rotated to make the card plate 37 correspond to the cross hole position of the fixed frame 32, and the rotating positioning rod 38 is moved toward the direction of the brake gear 31 to make the card plate 37 enter the interior of the fixed frame 32 through the cross hole. At this time, the brake plate 35 contacts the brake gear 31 to limit the rotation of the brake gear 31. At this time, the brake ring 7 and the first fixed circular rail 1-1 are relatively stationary.

[0076] It is understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present disclosure, and the present disclosure is not limited thereto. Those skilled in the art may make various modifications and improvements without departing from the spirit and substance of the present disclosure, and such modifications and improvements are also considered to be within the scope of protection of the present disclosure.

Claims

1. An all-position welding device for boiler tubes with different diameters, characterized in that: include: A fixed assembly, the fixed assembly comprising a first fixed circular rail, a second fixed circular rail, a brake ring, and at least two fixed mounting blocks, the first fixed circular rail and the second fixed circular rail being spaced apart, at least two of the fixed mounting blocks being spaced apart and connected between the first fixed circular rail and the second fixed circular rail along the circumference of the first fixed circular rail, the brake ring being rotatably connected to a side of the first fixed circular rail facing away from the second fixed circular rail; At least two groups of clamping assemblies, each of the clamping assemblies being arranged in a one-to-one correspondence with the fixed mounting block, the clamping assemblies being connected to the fixed mounting block in a manner movable along a radial direction of the fixed assembly, and the brake ring being capable of driving the clamping assemblies to perform linear motion; a welding gun body connected to the second fixed circular rail in a manner such that the welding gun body is rotatable along the circumference of the second fixed circular rail and movable along the radial direction of the fixed assembly; A plurality of first fixed shafts and a plurality of drive arc rails are provided on one side of the brake ring close to the first fixed circular rail. The plurality of first fixed shafts are spaced and evenly arranged along the circumference of the first fixed circular rail. Each of the drive arc rails is rotatably connected to a corresponding first fixed shaft. The drive arc rail is slidably connected to the clamping assembly. The drive arc rail can drive the clamping assembly to perform linear motion. The all-position welding device for boiler tubes with different diameters further includes a support assembly, which includes: a rotating rod body, the rotating rod body being rotatably connected to the first fixed shaft; a second fixed shaft, the second fixed shaft being rotatably connected to a side of the second fixed circular rail facing away from the first fixed circular rail, the rotating rod passing through the second fixed shaft; a swing plate connected to the second fixed shaft; A universal ball is provided at one end of the swing plate away from the second fixed shaft.

2. The all-position welding device for boiler tubes with different diameters according to claim 1, characterized in that: The clamping assembly comprises: a sliding rod, the sliding rod being movably provided on the fixed mounting block along the radial direction of the fixed assembly, the driving arc track being slidably connected to the sliding rod; a movable block connected to one end of the sliding rod close to the center of the first fixed circular rail; A top spring is sleeved on the sliding rod, and two ends of the top spring are respectively in contact with the end of the sliding rod and the fixed installation block.

3. The all-position welding device for boiler tubes with different diameters according to claim 2, characterized in that: The clamping assembly further comprises: A plurality of contact rollers are rotatably arranged at one end of the movable block away from the sliding rod, and the plurality of contact rollers form an arc structure.

4. The all-position welding device for boiler tubes with different diameters according to claim 1, characterized in that: The support assembly further comprises: a rotating collar, the rotating collar being rotatably sleeved on the second fixed shaft, the swing plate being rotatably connected to the second fixed shaft, the swing plate having a groove body, the rotating collar being located at an end of the groove body away from the universal ball; A blocking plate is provided at an end of the swing plate away from the universal ball, and the blocking plate is provided at the outer side of the swing plate.

5. The all-position welding device for boiler tubes with different diameters according to claim 1, characterized in that: The all-position welding device for boiler tubes with different diameters also includes: a third fixed shaft, the third fixed shaft being arranged at an end of the second fixed circular rail away from the first fixed circular rail; a mounting plate connected to an end of the third fixed shaft facing away from the second fixed circular rail; a mounting frame protruding from an edge of the mounting plate along a circumference of the mounting plate; a drive motor, the drive motor being arranged on a side of the mounting frame away from the second fixed circular rail; A driving gear, the driving motor is drivingly connected to the driving gear, and the driving gear is located in the accommodation space formed by the mounting frame; A welding ring seat is installed inside the mounting plate, the peripheral side of the welding ring seat has a tooth pressure engaged with the driving gear, and the welding gun body is connected to the welding ring seat in a manner that is movable relative to the welding ring seat.

6. The all-position welding device for boiler tubes with different diameters according to claim 5, characterized in that: The all-position welding device for boiler tubes with different diameters also includes: a support plate, the support plate being arranged on a side of the welding ring seat away from the second fixed circular rail, the support plate extending in a direction away from the welding ring seat; A limiting column, the limiting column is arranged on a side of the support plate away from the center of the welding ring seat; A fixed top plate, the fixed top plate being fixedly arranged on one end of the limiting column away from the support plate; a positioning bolt, the positioning bolt being threadably connected to the fixed top plate, one end of the positioning bolt being located on a side of the fixed top plate facing away from the support plate; A lifting plate, the lifting plate being slidably connected to the limiting column, the lifting plate being located between the fixed top plate and the support plate, and the other end of the positioning bolt being connected to the lifting plate; A connecting frame is connected to the lifting plate, the connecting frame is located between the support plate and the lifting plate, and the welding gun body is installed in the connecting frame.

7. The all-position welding device for boiler tubes with different diameters according to claim 1, characterized in that: The all-position welding device for boiler tubes with different diameters also includes: Engaging tooth grooves, the engaging tooth grooves are provided on the circumferential inner wall of the brake ring; a brake gear, the brake gear being rotatably connected to the first fixed circular rail, the brake gear being engaged with the meshing tooth groove; The brake plate is movably arranged on the outside of the brake gear. When the brake plate contacts the brake gear, the brake gear stops. When the brake plate is out of contact with the brake gear, the brake gear rotates.

8. The all-position welding device for boiler tubes with different diameters according to claim 7, characterized in that: The all-position welding device for boiler tubes with different diameters also includes: a fixed frame, the fixed frame being fixedly connected to a side of the first fixed circular rail facing away from the second fixed circular rail, the brake plate being arranged between the fixed frame and the brake gear; A push-pull rod, wherein the push-pull rod is passed through the fixed frame, and one end of the push-pull rod is connected to the brake plate; A rotating positioning rod connected to the other end of the push-pull rod; a stopper, the stopper being fixedly disposed in the fixed frame, and the push-pull rod being passed through the stopper; A return spring, wherein the return spring is sleeved on the push-pull rod, and two ends of the return spring respectively abut against one end of the fixed frame close to the brake plate and the stop block; A card plate is sleeved on the push-pull rod, and the card plate is located between the stop block and the rotation positioning rod. An end of the fixed frame away from the brake plate is provided with a cross through hole that matches the shape of the card plate.

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