Narrow-groove pipeline automatic welding device based on rotating arc

Abstract

An automatic narrow-groove pipeline welding device based on rotating arcs comprises an annular ring arranged outside, and further comprises convex rings, threaded holes, a rotating mechanism and a welding gun, the convex rings are arranged on the edges of the two sides of the annular ring, inner gear rings are arranged on the inner sides of the convex rings, and a plurality of fastening screws are arranged in the middle of the outer side of the annular ring; a rotating mechanism is arranged on the annular ring, and a welding gun is mounted on the rotating mechanism; the rotating mechanism comprises a mounting frame, a fixing lug and a fixing bolt, an arc-shaped groove is formed in the middle of the inner side of the mounting frame, clamping frames are arranged on the inner sides of the two ends of the mounting frame, rotating shafts are mounted in the clamping frames, gears are mounted on the rotating shafts, driving motors are mounted at one ends of the rotating shafts, and two arc-shaped blocks are mounted in the middle of one side of the mounting frame; the pipeline welding device is novel in structure, ingenious in conception, capable of conveniently conducting annular welding on a pipeline, high in welding efficiency and low in labor intensity, and a worker does not need to conduct welding around the pipeline.

Description

Technical Field

[0001] The utility model relates to a welding device, in particular to an automatic welding device for narrow groove pipelines based on a rotating electric arc. Background Art

[0002] Narrow groove welding is an economical and applicable welding method that can achieve high-efficiency and high-quality welding. Compared with traditional welding methods, the groove volume of narrow groove welding is smaller, which saves welding materials and consumed electrical energy, and can reduce production costs while improving production efficiency. The welding line energy of the narrow groove welding process is smaller, the molten pool cools faster, and the heat-affected zone of the weld joint becomes smaller, which is more conducive to ensuring the mechanical properties of the weld joint. Therefore, narrow groove welding has been widely used in manufacturing industries such as pressure vessels, ships and submarines, thick-walled pipelines, and nuclear industries. The biggest problem with narrow groove welding technology is the side wall fusion problem. The current methods used to solve the problem of side wall non-fusion mainly include wire swing, arc rotation, the use of twisted wire, double wire and multi-wire welding, etc.

[0003] When the automatic welding device for narrow groove pipe is welding, it is not possible to perform circular welding on the pipe well, the welding efficiency is low, the labor intensity is high, and it is not conducive to welding. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a narrow groove pipe automatic welding device based on a rotating electric arc, which effectively solves the problem that the narrow groove pipe automatic welding device cannot perform circular welding on the pipe well during welding, has low welding efficiency, high labor intensity, and is not conducive to welding.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: the utility model includes an annular ring arranged outside, and also includes a convex ring, an inner gear ring, a fastening screw, a handle, a threaded hole, a rotating mechanism and a welding gun, the edges of both sides of the annular ring are provided with convex rings, the inner side of the convex ring is provided with an inner gear ring, a plurality of fastening screws are provided in the middle of the outer side of the annular ring, a rotating mechanism is provided on the annular ring, and a welding gun is installed on the rotating mechanism;

[0006] The rotating mechanism includes a mounting frame, an arc groove, a clamping frame, a rotating shaft, a gear, a driving motor, an arc block, a fixing ear and a fixing bolt. An arc groove is provided in the middle of the inner side of the mounting frame, and clamping frames are provided on the inner sides of both ends of the mounting frame. A rotating shaft is installed inside the clamping frame, a gear is installed on the rotating shaft, a driving motor is installed at one end of the rotating shaft, two arc blocks are installed in the middle of one side of the mounting frame, a fixing ear is provided at one end of the arc block, and a plurality of fixing bolts are screwed on the fixing ear.

[0007] Preferably, a handle is provided at the outer end of the fastening screw.

[0008] Preferably, a threaded hole is formed in the annular ring at a position corresponding to the fastening screw.

[0009] Preferably, the gear is meshingly connected with the internal gear ring.

[0010] Preferably, the rotating shaft is connected to the bracket via a bearing.

[0011] Preferably, the arc block is made of metal or hard plastic with a certain elasticity.

[0012] Beneficial effects: When the utility model is used, the annular ring is sleeved on the pipe to be welded. After the sleeve is completed, each fastening screw is rotated by the handle. The rotation distance of the fastening screw is calculated according to the inner diameter of the annular ring minus the outer diameter of the pipe. After fixing, the fixing bolt on the fixing ear is loosened, and the position of the welding gun on the arc block is adjusted so that the welding gun can better weld the pipe. When in use, the driving motor works, the driving motor drives the rotating shaft to rotate, the rotating shaft rotation drives the gear to rotate, the gear rotation drives the movement on the inner gear ring, the movement of the gear drives the mounting frame to move on the annular ring, and the movement of the mounting frame drives the welding gun installed thereon to weld the surface of the pipe. The operation is simple and convenient. The utility model has a novel structure and a clever design. It is convenient for annular welding of pipes. There is no need for personnel to weld around the pipe. The welding efficiency is high and the labor intensity is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a cross-sectional view of the mounting frame of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the mounting frame of the utility model;

[0017] Figure 4 It is a cross-sectional view of the annular ring of the utility model;

[0018] Numbers in the figure: 1, annular ring; 2, convex ring; 3, internal gear ring; 4, fastening screw; 5, handle; 6, threaded hole; 7, rotating mechanism; 8, welding gun; 9, mounting frame; 10, arc groove; 11, bracket; 12, rotating shaft; 13, gear; 14, driving motor; 15, arc block; 16, fixing ear; 17, fixing bolt. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-4 The specific implementation modes of the present utility model are further described in detail.

[0020] Embodiment 1, by Figure 1-4 The utility model provides a narrow groove pipeline automatic welding device based on rotating electric arc, including an annular ring 1 arranged outside, and also including a convex ring 2, an inner gear ring 3, a fastening screw 4, a handle 5, a threaded hole 6, a rotating mechanism 7, a welding gun 8, a mounting frame 9, an arc groove 10, a clamping frame 11, a rotating shaft 12, a gear 13, a driving motor 14, an arc block 15, a fixing ear 16 and a fixing bolt 17. The edges of both sides of the annular ring 1 are provided with convex rings 2, the inner side of the convex ring 2 is provided with an inner gear ring 3, a plurality of fastening screws 4 are provided in the middle of the outer side of the annular ring 1, a rotating mechanism 7 is provided on the annular ring 1, and a welding gun 8 is installed on the rotating mechanism 7;

[0021] The rotating mechanism 7 includes a mounting frame 9, an arc groove 10, a clamping frame 11, a rotating shaft 12, a gear 13, a driving motor 14, an arc block 15, a fixing ear 16 and a fixing bolt 17. An arc groove 10 is provided in the middle of the inner side of the mounting frame 9, and clamping frames 11 are provided on the inner sides of both ends of the mounting frame 9. A rotating shaft 12 is installed inside the clamping frame 11, and a gear 13 is installed on the rotating shaft 12. A driving motor 14 is installed at one end of the rotating shaft 12. Two arc blocks 15 are installed in the middle of one side of the mounting frame 9, and a fixing ear 16 is provided at one end of the arc block 15. A plurality of fixing bolts 17 are screwed on the fixing ear 16.

[0022] Specific use: When the utility model is used, the annular ring 1 is sleeved on the pipe to be welded. After the sleeve connection is completed, each fastening screw 4 is rotated by the handle 5. The rotation distance of the fastening screw 4 is calculated according to the inner diameter of the annular ring 1 minus the outer diameter of the pipe. After fixing, loosen the fixing bolt 17 on the fixing ear 16, and adjust the position of the welding gun 8 on the arc block 15 so that the welding gun 8 can better weld the pipe. When in use, the drive motor 14 works, and the drive motor 14 drives the rotating shaft 12 to rotate. The rotation of the rotating shaft 12 drives the gear 13 to rotate. The rotation of the gear 13 drives the movement on the inner gear ring 3. The movement of the gear 13 drives the mounting frame 9 to move on the annular ring 1. The movement of the mounting frame 9 drives the welding gun 8 installed thereon to weld the surface of the pipe. The operation is simple and convenient.

[0023] Beneficial effects: The utility model has a novel structure and an ingenious design, and is convenient for annular welding of pipelines. There is no need for personnel to weld around the pipelines, and the welding efficiency is high and the labor intensity is low.

[0024] Embodiment 2

[0025] In the first embodiment, the fastening screw 4 is difficult to rotate. Figure 1As another preferred embodiment, the difference from the first embodiment is that a handle 5 is provided at the outer end of the fastening screw 4 to facilitate the rotation of the fastening screw 4 through the handle 5.

[0026] Embodiment 3

[0027] In the first embodiment, the fastening screw 4 is inconvenient to rotate. Figure 1 As another preferred embodiment, the difference from the first embodiment is that a threaded hole 6 is provided at the position of the annular ring 1 corresponding to the fastening screw 4 to facilitate the screwing and fixing of the fastening screw 4.

[0028] Embodiment 4

[0029] In the first embodiment, the gear 13 and the inner gear ring 3 are not easy to transmit. Figure 1 As another preferred embodiment, the difference from the first embodiment is that the gear 13 is meshedly connected with the inner gear ring 3 to facilitate the transmission of the gear 13 and the inner gear ring 3.

[0030] Embodiment 5

[0031] In the first embodiment, the rotating shaft 12 is inconvenient to use. Figure 1 As another preferred embodiment, the difference from the first embodiment is that the rotating shaft 12 is connected to the bracket 11 through a bearing, which facilitates the installation and use of the rotating shaft 12.

[0032] Embodiment 6

[0033] The arc block 15 in the first embodiment is inconvenient to use. Figure 1 As another preferred embodiment, the difference from the first embodiment is that the arc block 15 is made of metal or hard plastic with a certain elasticity, so that the arc block 15 has good strength and a certain elasticity.

[0034] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and appropriate controllers and encoders should be selected according to actual conditions to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principles and processes, and no longer explains the electrical control.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An automatic welding device for narrow groove pipes based on a rotating arc, comprising an annular ring (1) arranged externally, characterized in that: It also comprises a convex ring (2), an inner gear ring (3), a fastening screw (4), a handle (5), a threaded hole (6), a rotating mechanism (7) and a welding gun (8); the edges of both sides of the annular ring (1) are provided with convex rings (2); the inner side of the convex ring (2) is provided with an inner gear ring (3); a plurality of fastening screws (4) are provided in the middle of the outer side of the annular ring (1); the annular ring (1) is provided with a rotating mechanism (7); and the welding gun (8) is installed on the rotating mechanism (7); The rotating mechanism (7) comprises a mounting frame (9), an arc groove (10), a clamping frame (11), a rotating shaft (12), a gear (13), a driving motor (14), an arc block (15), a fixing ear (16) and a fixing bolt (17); the mounting frame (9) is provided with an arc groove (10) in the middle of the inner side; the inner sides of both ends of the mounting frame (9) are provided with clamping frames (11); the rotating shaft (12) is installed inside the clamping frame (11); the rotating shaft (12) is provided with a gear (13); one end of the rotating shaft (12) is provided with a driving motor (14); two arc blocks (15) are installed in the middle of one side of the mounting frame (9); one end of the arc block (15) is provided with a fixing ear (16); and a plurality of fixing bolts (17) are screwed onto the fixing ear (16).

2. According to claim 1, a rotating arc-based narrow groove pipe automatic welding device is characterized in that: The outer end of the fastening screw rod (4) is provided with a handle (5).

3. The automatic welding device for narrow groove pipes based on rotating arc according to claim 1 is characterized in that: The annular ring (1) is provided with a threaded hole (6) at a position corresponding to the fastening screw (4).

4. The automatic welding device for narrow groove pipes based on rotating arc according to claim 1 is characterized in that: The gear (13) is meshingly connected with the internal gear ring (3).

5. The automatic welding device for narrow groove pipes based on rotating arc according to claim 1 is characterized in that: The rotating shaft (12) is connected to the bracket (11) via a bearing.

6. The automatic welding device for narrow groove pipes based on rotating arc according to claim 1 is characterized in that: The arc block (15) is made of metal or hard plastic with a certain elasticity.

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