Multi-section welding device applied to furnace tube

Abstract

The utility model relates to the technical field of furnace tube welding, in particular to a multi-section welding device applied to a furnace tube, which comprises a welding workbench, two supporting seats are symmetrically arranged at the top of the welding workbench, fixing rings are fixedly connected to the outer walls of the two supporting seats, and driving rollers are arranged in the fixing rings. A to-be-welded furnace tube is sleeved with a supporting roller, the position of the furnace tube is moved so that the furnace tube can be arranged outside a clamping block in a sleeving mode, a driving handle is rotated to drive a driving roller and a driving disc to rotate, and the driving disc rotates to drive a limiting column located in the driving disc to move along the track of an arc-shaped groove; the limiting columns move to drive the clamping blocks to move outwards along the sliding grooves, so that the clamping blocks are opened outwards with the fixing disc as the circle center until the clamping blocks are tightly attached to the inner wall of the furnace tube, the opening diameter of the clamping blocks is matched with the diameter of the furnace tube, the effect of clamping and fixing the furnace tube is achieved, and the stability of the position of the furnace tube is guaranteed; and the phenomenon that the furnace tube deviates during welding is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of furnace tube welding, in particular to a multi-section welding device applied to furnace tubes. Background Art

[0002] Boiler tubes are steel products with open ends and a hollow cross-section, with a relatively large length-to-circumference ratio. They are categorized by production method as seamless or welded. Tube specifications are expressed by external dimensions (such as outer diameter or side length) and wall thickness. Tube sizes range widely, from very small capillaries to large-diameter tubes several meters in diameter. They are used in pipelines, thermal equipment, machinery, petroleum exploration, containers, the chemical industry, and for specialized applications.

[0003] At present, the welding between two sections of furnace tubes requires the use of support rollers to be inserted between the furnace tubes to support the furnace tubes and weld the surfaces of the furnace tubes. The size of the support rollers is generally fixed. When inserted into furnace tubes with inconsistent diameters, they cannot adapt to the diameter of the furnace tubes. The size of the support rollers that is adapted to the diameter of the furnace tubes needs to be frequently replaced, thereby increasing the cost and working hours of furnace tube welding. When the size of the support rollers does not match the diameter of the furnace tubes, the position of the support rollers inside the furnace tubes is unstable, and they are prone to shaking or shifting during welding, affecting the welding quality and resulting in uneven welds or insufficient welding strength. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a multi-section welding device for furnace tubes.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A multi-section welding device for furnace pipes includes a welding workbench with two support seats symmetrically arranged on the top of the welding workbench. The outer walls of the two support seats are fixedly connected to a fixing ring. A driving roller is arranged inside the fixing ring. The end of the driving roller passes through the support seat and is fixedly connected to a driving disk. The driving disk has a plurality of arc grooves.

[0007] A support plate is fixedly connected to one side of the outer wall of the support seat, and an end of the support plate is fixedly connected to a fixed plate. A plurality of slide grooves are opened on the fixed plate, and a connecting rod is provided in the slide groove. The end of the connecting rod is fixedly connected to a clamping block, and the outer wall of the connecting rod is fixedly connected to a limiting column. The limiting column is located inside the arc groove and slides along the trajectory of the arc groove. A supporting roller is provided in the middle of the fixed plate, and the outer surface of the supporting roller is sleeved with a furnace pipe to be welded.

[0008] Preferably, a support frame is fixedly connected to one side of the top of the welding workbench, a slide rail is fixedly connected to the support frame, a slider is slidably connected to the slide rail, a mounting seat is fixedly connected to the outer wall of the slider, an electric push rod is provided on the mounting seat, and the output end of the electric push rod is connected to a welding head, and the welding head is located directly above the furnace tube to be welded.

[0009] Preferably, the end of the driving roller is fixedly connected to a connecting roller shaft, one end of the connecting roller shaft is fixedly connected to a driving plate, one side of the driving plate is fixedly connected to a driving handle, and the surface of the driving handle is provided with an anti-slip rubber sleeve.

[0010] Preferably, a support sleeve is fixedly connected to a side of the fixing ring close to the support seat, and the support sleeve passes through the support seat and is fixedly connected to the support plate.

[0011] Preferably, a mounting hole is opened in the middle of the driving disk and the fixed disk, and the supporting roller passes through the mounting hole and is connected between the two supporting seats.

[0012] The beneficial effects of the utility model are as follows: by inserting the supporting roller into the interior of the furnace tube to be welded, the position of the furnace tube is moved so that the furnace tube is sleeved on the outside of the clamping block, and by rotating the driving handle, the driving roller and the driving disk are driven to rotate. When the driving disk rotates, the limiting column inside it is driven to move along the trajectory of the arc groove. The movement of the limiting column drives the connecting rod and the clamping block to move outward along the slide groove, so that the clamping block is opened outward with the fixed disk as the center of the circle until it is close to the inner wall of the furnace tube, which is beneficial to adapt the opened diameter of the clamping block to the diameter of the furnace tube, thereby achieving the effect of clamping and fixing the furnace tube, ensuring the stability of the furnace tube position, avoiding the phenomenon of furnace tube deviation during welding, and improving the quality and strength of welding.

[0013] By moving the slider, the mounting base and the electric push rod are moved to the top of the furnace tube welding position, which is beneficial for real-time adjustment of the furnace tube welding position. When the electric push rod is used to drive the welding head down and contact the furnace tube surface, the welding position of the furnace tube can be accurately welded. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a multi-section welding device for furnace tubes proposed by the present invention;

[0015] Figure 2 This is a schematic diagram of the connection structure between the support base and the support roller of a multi-section welding device for furnace tubes proposed by the present invention;

[0016] Figure 3 This is a schematic diagram of the connection structure between the fixing ring and the driving disc of a multi-section welding device for furnace tubes proposed by the present invention;

[0017] Figure 4 The utility model is a schematic diagram of a fixing plate structure of a multi-section welding device for furnace tubes.

[0018] In the picture:

[0019] 1. Welding workbench; 2. Support seat; 3. Fixed ring; 4. Driving roller; 5. Driving plate; 6. Arc groove; 7. Support plate; 8. Fixed plate; 9. Connecting rod; 10. Clamping block; 11. Limiting column; 12. Support roller; 13. Support frame; 14. Slide rail; 15. Slider; 16. Mounting seat; 17. Electric push rod; 18. Welding head; 19. Connecting roller shaft; 20. Driving plate; 21. Driving handle; 22. Support sleeve. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0022] The standard parts used in this utility model can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0023] Example:

[0024] Reference Figure 1-4 A multi-section welding device for furnace tubes includes a welding workbench 1. Two support bases 2 are symmetrically arranged on the top of the welding workbench 1. The outer walls of the two support bases 2 are fixedly connected to a fixing ring 3. A driving roller 4 is arranged inside the fixing ring 3. The end of the driving roller 4 passes through the support base 2 and is fixedly connected to a driving disk 5. The driving disk 5 is provided with a plurality of arc grooves 6.

[0025] A support plate 7 is fixedly connected to one side of the outer wall of the support seat 2, and a fixed plate 8 is fixedly connected to the end of the support plate 7. A number of slide grooves are opened on the fixed plate 8, and a connecting rod 9 is provided in the slide groove. The end of the connecting rod 9 is fixedly connected to a clamping block 10, and the outer wall of the connecting rod 9 is fixedly connected to a limiting column 11. The limiting column 11 is located inside the arc groove 6 and slides along the trajectory of the arc groove 6. A support roller 12 is provided in the middle of the fixed plate 8, and the outer surface of the support roller 12 is sleeved with the furnace tube to be welded.

[0026] A support frame 13 is fixedly connected to one side of the top of the welding workbench 1, a slide rail 14 is fixedly connected to the support frame 13, a slider 15 is slidably connected to the slide rail 14, a mounting seat 16 is fixedly connected to the outer wall of the slider 15, an electric push rod 17 is provided on the mounting seat 16, and the output end of the electric push rod 17 is connected to a welding head 18, which is located directly above the furnace tube to be welded.

[0027] The end of the driving roller 4 is fixedly connected to a connecting roller shaft 19, one end of the connecting roller shaft 19 is fixedly connected to a driving plate 20, one side of the driving plate 20 is fixedly connected to a driving handle 21, and the surface of the driving handle 21 is provided with an anti-slip rubber sleeve.

[0028] A support sleeve 22 is fixedly connected to one side of the fixing ring 3 close to the support seat 2 . The support sleeve 22 passes through the support seat 2 and is fixedly connected to the support plate 7 .

[0029] Mounting holes are provided in the middle of the driving plate 5 and the fixed plate 8 , and the supporting roller 12 passes through the mounting holes and is connected between the two supporting seats 2 .

[0030] In this embodiment, when the furnace tube needs to be welded, the two sections of the furnace tube to be welded are first respectively inserted into the outside of the support roller 12, and then the support roller 12 is inserted into the mounting hole so that the furnace tube is between the two support seats 2. Then, the position of the furnace tube is adjusted left and right so that the inner wall of the furnace tube is sleeved on the outside of the clamping block 10, and then the driving handles 21 on both sides of the support seat 2 are rotated in turn. When the driving handles 21 are rotated, the driving plate 20, the connecting roller shaft 19 and the driving roller 4 are rotated in turn. When the driving roller 4 rotates, it drives the driving disc 5 Rotation, when the driving disk 5 rotates, the arc groove 6 on it is driven to rotate, and when the arc groove 6 rotates, the limiting column 11 inside it is driven to move along the trajectory of the arc groove 6, and when the limiting column 11 moves, it drives the connecting rod 9 to move outward along the slide groove, and when the connecting rod 9 moves, it drives the clamping block 10 to move outward with the fixed disk 8 as the center of the circle. When the clamping block 10 moves until it is close to the inner wall of the furnace tube, the diameter of the clamping block 10 can be adapted to the diameter of the furnace tube, so that the furnace tube can be clamped and fixed.

[0031] Furthermore, after the furnace tube is clamped and fixed, the slider 15 is moved so that the mounting seat 16 drives the electric push rod 17 to move to the top of the welding point of the two furnace tubes. At this time, the electric push rod 17 is started, and the electric push rod 17 drives the welding head 18 to descend when it runs. When the welding head 18 descends to and contacts the surface of the furnace tube, the connection of the furnace tube can be welded.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0034] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multi-section welding device for furnace tubes, comprising a welding workbench (1), characterized in that: Two support seats (2) are symmetrically arranged on the top of the welding workbench (1), and the outer walls of the two support seats (2) are fixedly connected to a fixing ring (3), and a driving roller (4) is arranged inside the fixing ring (3). The end of the driving roller (4) passes through the support seat (2) and is fixedly connected to a driving disk (5), and a plurality of arc grooves (6) are opened on the driving disk (5); A support plate (7) is fixedly connected to one side of the outer wall of the support seat (2), and a fixed plate (8) is fixedly connected to the end of the support plate (7). A plurality of slide grooves are provided on the fixed plate (8), and a connecting rod (9) is provided in the slide groove. A clamping block (10) is fixedly connected to the end of the connecting rod (9). A limiting column (11) is fixedly connected to the outer wall of the connecting rod (9), and the limiting column (11) is located inside the arc groove (6) and slides along the track of the arc groove (6). A supporting roller (12) is provided in the middle of the fixed plate (8), and the outer surface of the supporting roller (12) is sleeved with a furnace tube to be welded.

2. A multi-section welding device for furnace tubes according to claim 1, characterized in that: A support frame (13) is fixedly connected to one side of the top of the welding workbench (1), a slide rail (14) is fixedly connected to the support frame (13), a slider (15) is slidably connected to the slider (14), an outer wall of the slider (15) is fixedly connected to a mounting seat (16), an electric push rod (17) is provided on the mounting seat (16), an output end of the electric push rod (17) is connected to a welding head (18), and the welding head (18) is located directly above the furnace tube to be welded.

3. The multi-section welding device for furnace tubes according to claim 1, characterized in that: The end of the driving roller (4) is fixedly connected to a connecting roller shaft (19), one end of the connecting roller shaft (19) is fixedly connected to a driving plate (20), one side of the driving plate (20) is fixedly connected to a driving handle (21), and the surface of the driving handle (21) is provided with an anti-slip rubber sleeve.

4. The multi-section welding device for furnace tubes according to claim 1, characterized in that: A support sleeve (22) is fixedly connected to one side of the fixing ring (3) close to the support seat (2); the support sleeve (22) passes through the support seat (2) and is fixedly connected to the support plate (7).

5. The multi-section welding device for furnace tubes according to claim 1, characterized in that: The driving disk (5) and the fixed disk (8) are provided with mounting holes in the middle thereof, and the supporting roller (12) passes through the mounting holes and is connected between the two supporting seats (2).

Images