Welding torch swing angle conversion device and welding equipment

Abstract

The utility model relates to the technical field of pipeline welding, in particular to a welding torch swing angle conversion device and welding equipment, and aims to solve the technical problem that a molten pool falls when an automatic straight swing welding machine is used for welding an inclined pipeline. The device comprises a lifting connecting piece, an angle adjusting plate, a welding torch connecting piece and a straight swing connecting piece. The angle adjusting plate is parallel to the horizontal plane and is provided with a first end and a second end which are opposite in direction, and the first end is connected with the lifting connecting piece through an angle adjusting structure; the angle adjusting structure enables the first end to rotate around a vertical axis; the welding torch connecting piece is in sliding fit with the angle adjusting plate so as to slide between the first end and the second end; the straight swing connecting piece is in transmission connection with the welding torch connecting piece and is configured to drive the welding torch connecting piece to slide on the angle adjusting plate under the straight swing working condition. The device can change the direction of the swing path of the welding torch by rotating the angle adjusting plate, so that a molten pool tends to be in a horizontal state, the problem that the molten pool falls in the welding process is effectively solved, and the qualified rate of welding joints is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline welding, in particular to a welding torch swing angle conversion device and welding equipment. Background Art

[0002] Pipeline automatic welding technology has the advantages of high joint quality, fast welding speed and low labor intensity, and is widely used in the installation of long-distance oil and gas pipelines. The automatic straight-swing welding machine used in pipeline automatic welding technology has stable overall performance, high welding efficiency, strong environmental adaptability, and weld mechanical properties that meet the requirements of pipeline engineering welding standards. The one-time welding pass rate is high, and it can reduce the labor intensity of workers, save construction costs, and has a good application effect.

[0003] In the welding of long-distance pipelines in mountainous areas, the pipeline joints are tilted. When the automatic straight-swing welding machine is used for welding, the elliptical welding molten pool is tilted. At this time, the molten pool will fall due to the influence of gravity, and the weld will become thinner at the top and thicker at the bottom. In addition, if the angle between the falling molten pool and the groove is less than 90°, unfused defects are prone to occur. Utility Model Content

[0004] The utility model aims to provide a welding torch swing angle conversion device and welding equipment to solve the technical problem of molten pool falling when an automatic straight swing welding machine welds an inclined pipeline.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is:

[0006] In a first aspect, the utility model provides a welding torch swing angle conversion device, comprising: a lifting connection member, an angle adjustment plate, a welding torch connection member, and a straight swing connection member;

[0007] The lifting connection piece is used to be fixed to the lifting output part of the automatic straight swing welding machine;

[0008] The angle adjustment plate is arranged parallel to the horizontal plane and has a first end and a second end in opposite directions, wherein the first end is connected to the lifting connection member via an angle adjustment structure;

[0009] The angle adjustment structure enables the first end to rotate around a vertical axis to adjust the angle formed by the angle adjustment plate and the lifting connection member;

[0010] The welding torch connecting piece is used to fix the welding torch, and is slidably matched with the angle adjustment plate so as to be able to slide between the first end and the second end;

[0011] The straight-swing connecting piece is used to be fixed to the straight-swing output part of the automatic straight-swing welding machine, and is transmission-connected with the welding torch connecting piece, so as to be configured to drive the welding torch connecting piece to slide on the angle adjustment plate under the straight-swing working condition.

[0012] Further, the angle adjustment structure includes a first bolt and a second bolt;

[0013] The first end is pivotally connected to the lifting connection member via the first bolt;

[0014] The second bolt is used to be fastened to the first end and the lifting connection member to limit the first end from rotating around the axis of the first bolt.

[0015] Furthermore, the lifting connection member is provided with a sliding groove, which is arc-shaped and extends around the axis of the first bolt;

[0016] The second bolt is passed through the sliding groove and is threadedly connected to the first end to press the lifting connection member to the first end. The second bolt can slide along the extension direction of the sliding groove when the lifting connection member is loosened.

[0017] Furthermore, the welding torch swing angle conversion device also includes a rocker arm, and two ends of the rocker arm are respectively pivotally connected to the straight-swing connecting member and the welding torch connecting member.

[0018] Further, the direct-swing connecting member includes a transmission block and a direct-swing connecting rod;

[0019] The transmission block is pivotally connected to the rocker arm;

[0020] One end of the direct-swing connecting rod is fixed to the transmission block, and the other end is used to be fixed to the direct-swing output part.

[0021] Furthermore, a first slide rail is fixed on the angle adjustment plate, and the first slide rail extends from the first end to the second end;

[0022] A first sliding block is fixed on the welding torch connecting piece, and the first sliding block is slidably connected to the first sliding rail.

[0023] Further, the welding torch connecting piece includes a slider connecting plate and a welding torch handle;

[0024] The slider connecting plate is fixedly connected to the first slider and is also pivotally connected to the rocker arm;

[0025] The welding torch handle is slidably connected to the slider connecting plate, and a sliding path extends vertically. The welding torch handle is fastened to the slider connecting plate by bolt connection.

[0026] Further, the welding torch connection piece also includes a welding torch fastening block;

[0027] The welding torch fastening block is fixed to the welding torch handle, and is provided with a through hole for inserting and fastening the welding torch.

[0028] Furthermore, the lifting connection member includes a lifting connection plate and a slide rail corner plate;

[0029] The lifting connection plate is used to be fixed to the lifting output part;

[0030] The slide rail corner plate is fixed to the lifting connection plate and connected to the first end via the angle adjustment structure;

[0031] A second slide rail is fixed on the slide rail corner plate. The second slide rail extends vertically and is slidably connected to a second slider. The second slider is used to be fixed to the automatic straight swing welding machine body.

[0032] In summary of the above technical solutions, the technical effects that can be achieved by the welding torch swing angle conversion device provided by the utility model are:

[0033] In the welding torch swing angle conversion device, when the straight-swing output part is activated, the straight-swing connecting part moves synchronously. Driven by the straight-swing connecting part, the welding torch connecting part that slides with the angle adjustment plate slides linearly between the first end and the second end. The angle formed by the angle adjustment plate and the lifting connecting part is adjusted by the angle adjustment structure, and the direction of the sliding path of the welding torch connecting part changes accordingly.

[0034] When in use, the welding torch swing angle conversion device is loaded onto an automatic straight-swing welding machine, and the angle adjustment plate is rotated to a target angle according to the actual inclination angle of the pipeline. In this way, the direction of the sliding path of the welding torch connector can be distinguished from the direction of the straight-swing path of the straight-swing output part, thereby changing the direction of the swing path of the welding torch; when the straight-swing output part moves, the welding torch swings in a horizontal direction along with the welding torch connector, so that the welding molten pool approaches a horizontal state. In this way, the situation in which the molten pool falls under the action of gravity due to the inclined state of the pipeline is avoided, the risk of unfused defects in the joints during welding is reduced, and the qualified rate of automatic welding is improved.

[0035] In a second aspect, the utility model provides a welding device, including an automatic straight-swing welding machine and the welding torch swing angle changing device;

[0036] The automatic straight-swing welding machine comprises a lifting output part and a straight-swing output part, wherein the straight-swing output part is fixed to the lifting output part;

[0037] The lifting connection member is fixed to the lifting output portion, and the straight-swing connection member is fixed to the straight-swing output portion.

[0038] The beneficial effects of a welding device provided by the utility model are:

[0039] The welding equipment provided by the utility model includes a welding torch swing angle conversion device. Therefore, the technical advantages and effects achieved by the welding equipment also include the technical advantages and effects achieved by the above-mentioned welding torch swing angle conversion device, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 A schematic diagram of the structure of a welding torch swing angle conversion device provided in an embodiment of the utility model;

[0042] Figure 2 An enlarged view of the angle adjustment structure provided by the embodiment of the utility model when in use;

[0043] Figure 3 A schematic structural diagram of a welding device provided in an embodiment of the utility model.

[0044] Icon: 100-lifting connector; 110-lifting connector plate; 120-slide rail corner plate; 121-slide slot;

[0045] 200-angle adjustment plate;

[0046] 300-welding torch connecting piece; 310-slider connecting plate; 320-welding torch handle; 330-welding torch fastening block;

[0047] 400-straight swing connecting piece; 410-transmission block; 420-straight swing connecting rod;

[0048] 500-Automatic straight swing welding machine;

[0049] 600-angle adjustment structure; 610-first bolt; 620-second bolt;

[0050] 700-welding torch; 800-rocker arm; 900-first slide rail; 1000-first slider; 1100-second slide rail; 1200-second slider. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0052] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0054] In the welding of long-distance pipelines in mountainous areas, the pipeline joints are tilted. When the automatic straight-swing welding machine is used for welding, the elliptical welding molten pool is tilted. At this time, the molten pool will fall due to the influence of gravity, and the weld will become thinner at the top and thicker at the bottom. In addition, if the angle between the falling molten pool and the groove is less than 90°, unfused defects are prone to occur.

[0055] In view of this, the utility model provides a welding torch swing angle conversion device, including a lifting connection 100, an angle adjustment plate 200, a welding torch connection 300 and a straight-swing connection 400; the lifting connection 100 is used to be fixed to the lifting output part of the automatic straight-swing welding machine 500; the angle adjustment plate 200 is arranged parallel to the horizontal plane, and has a first end and a second end in opposite directions, wherein the first end is connected to the lifting connection 100 through an angle adjustment structure 600; the angle adjustment structure 600 enables the first end to rotate around the vertical axis to adjust the angle formed by the angle adjustment plate 200 and the lifting connection 100; the welding torch connection 300 is used to fix the welding torch 700, which is slidably matched with the angle adjustment plate 200 so as to be able to slide between the first end and the second end; the straight-swing connection 400 is used to be fixed to the straight-swing output part of the automatic straight-swing welding machine 500, and is transmission-connected to the welding torch connection 300, so as to be configured to drive the welding torch connection 300 to slide on the angle adjustment plate 200 under the straight-swing working condition.

[0056] In the welding torch swing angle conversion device, the straight-swing output part is activated, and the straight-swing connecting member 400 moves synchronously. Driven by the straight-swing connecting member 400, the welding torch connecting member 300 that slides with the angle adjustment plate 200 slides linearly between the first end and the second end; the angle formed by the angle adjustment plate 200 and the lifting connecting member 100 is adjusted by the angle adjustment structure 600, and the direction of the sliding path of the welding torch connecting member 300 changes accordingly.

[0057] When in use, the welding torch swing angle conversion device is loaded onto the automatic straight-swing welding machine 500, and the angle adjustment plate 200 is rotated to the target angle according to the actual pipeline inclination angle. In this way, the direction of the sliding path of the welding torch connector 300 can be distinguished from the direction of the straight-swing path of the straight-swing output part, thereby changing the direction of the swing path of the welding torch 700; when the straight-swing output part is activated, the welding torch 700 swings in the horizontal direction along with the welding torch connector 300, so that the welding molten pool approaches a horizontal state. In this way, the situation where the molten pool falls under the action of gravity due to the inclined state of the pipeline is avoided, the risk of unfused defects in the joints during welding is reduced, and the qualified rate of automatic welding is improved.

[0058] The following combination Figures 1 to 3 The structure and shape of the welding torch swing angle conversion device provided in this embodiment are described in detail:

[0059] Regarding the angle adjustment structure 600, optionally, refer to Figure 1 and Figure 2 , including a first bolt 610 and a second bolt 620; the first end is pivotally connected to the lifting connection member 100 through the first bolt 610; the second bolt 620 is used to be fastened to the first end and the lifting connection member 100 to limit the first end from rotating around the axis of the first bolt 610.

[0060] Specifically, a sliding groove 121 is provided on the lifting connection 100, and the sliding groove 121 is arc-shaped, with its center on the axis of the first bolt 610, and optionally, the arc of the sliding groove 121 is π / 4; the second bolt 620 is passed through the sliding groove 121 and is threadedly connected to the first end to press the lifting connection 100 to the first end, and the second bolt 620 can slide along the extension direction of the sliding groove 121 when the lifting connection 100 is loosened.

[0061] Following the above, combined Figure 1 and Figure 2As shown, when the second bolt 620 is at the lower end of the sliding groove 121, the sliding path of the welding torch connection 300 on the angle adjustment plate 200 is parallel to the straight swing path of the straight swing connection 400; the second bolt 620 is loosened, the angle adjustment plate 200 rotates counterclockwise around the first bolt 610, and the second bolt 620 rotates synchronously in the sliding groove 121. After sliding to the target angle, the second bolt 620 is tightened again to fix the angle adjustment plate 200 on the lifting connection 100. At this time, the sliding path of the welding torch connection 300 on the angle adjustment plate 200 intersects with the straight swing path of the straight swing connection 400 to form an angle.

[0062] With the above design, when the pipeline is at any angle with the horizontal plane, the welding torch connector 300 can drive the welding torch 700 to swing along a preset horizontal direction by rotating the angle adjustment plate 200, thereby solving the problem of unmelted defects caused by the falling of the molten pool during the automatic welding of the pipeline at the 6G position, and improving the qualified rate of automatic welding. The automatic straight swing welding machine 500 can be applied to pipelines with an inclination range of 0-45° by loading the welding torch swing angle conversion device, and can meet the requirements of most mountain section pipeline construction.

[0063] In one embodiment of the present application, reference Figure 1 The transmission between the direct swing connection part 400 and the welding torch connection part 300 is realized through the rocker arm 800.

[0064] Specifically, bearings are respectively embedded in both ends of the rocker arm 800; the direct-swing connecting member 400 includes a transmission block 410 and a direct-swing connecting rod 420, wherein a shaft matching the corresponding bearing is fixed on the transmission block 410, so that the transmission block 410 and one end of the rocker arm 800 are pivotally connected, one end of the direct-swing connecting rod 420 is fixed to the transmission block 410, and the other end is used to be fixed to the direct-swing output part; the welding torch connecting member 300 includes a slider connecting plate 310, and a shaft matching another bearing is fixed on the slider connecting plate 310, so that the slider connecting plate 310 and the other end of the rocker arm 800 are pivotally connected.

[0065] As mentioned above, a first slide rail 900 is fixed on the angle adjustment plate 200 , and the first slide rail 900 extends from the first end to the second end; a first slider 1000 is fixed on the slider connecting plate 310 , and the first slider 1000 is slidably connected to the first slide rail 900 .

[0066] Combination Figure 3 As shown, when the direct-swing output part is started, the direct-swing connecting rod 420 swings left and right. Driven by the transmission block 410, the rocker arm 800 drives the slider connecting plate 310 to slide on the first slide rail 900 through the first slider 1000, so that the welding torch 700 can swing in the extension direction of the first slide rail 900.

[0067] The welding torch swing angle conversion device is loaded on the automatic straight-swing welding machine 500, and a transmission mechanism is composed of mechanical components such as the straight-swing connecting rod 420, the transmission block 410, the rocker arm 800, the angle adjustment plate 200, the first slide rail 900, the first slider 1000, and the welding torch connecting piece 300. The degree of freedom of the welding torch 700 is increased by articulation, so that the welding torch 700 can achieve three-dimensional adjustment.

[0068] For further reference, Figure 1 The welding torch connecting component 300 also includes a welding torch handle 320 and a welding torch fastening block 330; the welding torch handle 320 is slidably connected to the slider connecting plate 310, and the sliding path extends vertically. The welding torch handle 320 is fastened to the slider connecting plate 310 by bolts; the welding torch fastening block 330 is fixed to the welding torch handle 320, and a through hole is opened on it for inserting and fastening the welding torch 700.

[0069] Continue to refer Figure 1 In the above design, the slider connecting plate 310, the welding torch handle 320 and the welding torch fastening block 330 cooperate to achieve the clamping and fixing of the welding torch 700, so that the welding torch 700 can slide along the extension direction of the first slide rail 900 with the first slider 1000; at the same time, during assembly, by adjusting the position of the welding torch handle 320 on the slider connecting plate 310, the clamping and fixing position of the welding torch handle 320 on the welding torch fastening block 330, and the clamping and fixing position of the welding torch fastening block 330 on the welding torch 700, the adjustment of the horizontal and longitudinal positions of the welding torch 700 can be achieved.

[0070] For further reference, Figure 1 and Figure 3 The lifting connection member 100 includes a lifting connection plate 110 and a slide rail corner plate 120; the lifting connection plate 110 is used to be fixed to the lifting output part; the slide rail corner plate 120 is fixed to the lifting connection plate 110, and is connected to the first end through the angle adjustment structure 600; a second slide rail 1100 is fixed on the slide rail corner plate 120, and the second slide rail 1100 extends vertically, and a second slider 1200 is slidably connected thereto, and the second slider 1200 is used to be fixed to the automatic straight swing welding machine body.

[0071] Specifically, refer to Figure 3 The straight-swing output part is fixed to the lifting output part. When the lifting output part is started, the straight-swing output part moves synchronously in the up and down directions. At the same time, the lifting connecting plate 110 and the slide rail corner plate 120 also slide in the up and down directions on the automatic straight-swing welding machine body through the second slide rail 1100 and the second slider 1200. In this way, the welding torch swing angle conversion device as a whole drives the welding torch 700 to move in the up and down directions.

[0072] In addition, with the above-mentioned design, after the welding torch swing angle conversion device is loaded into the automatic straight swing welding machine 500, the cooperation of the slide rail corner plate 120, the transmission block 410, the rocker arm 800 and the angle adjustment plate 200 can ensure the stability of the sliding of the slider connecting plate 310 on the angle adjustment plate 200, thereby preventing the welding torch 700 from shaking when moving and ensuring the welding quality.

[0073] The utility model also provides a welding device, including an automatic straight-swing welding machine 500 and a welding torch swing angle conversion device. The technical advantages and effects achieved by the welding device also include the technical advantages and effects achieved by the above-mentioned welding torch swing angle conversion device, which will not be repeated here.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A welding torch swing angle conversion device, characterized in that: include: A lifting connection piece (100), an angle adjustment plate (200), a welding torch connection piece (300) and a straight swing connection piece (400); The lifting connection member (100) is used to be fixed to the lifting output part of the automatic straight-swing welding machine (500); The angle adjustment plate (200) is arranged parallel to a horizontal plane and has a first end and a second end in opposite directions, wherein the first end is connected to the lifting connection member (100) via an angle adjustment structure (600); The angle adjustment structure (600) enables the first end to rotate around a vertical axis to adjust the angle formed by the angle adjustment plate (200) and the lifting connection member (100); The welding torch connecting piece (300) is used to fix the welding torch (700), and is slidably matched with the angle adjustment plate (200) so as to be able to slide between the first end and the second end; The straight-swing connecting member (400) is used to be fixed to the straight-swing output part of the automatic straight-swing welding machine (500), and is transmission-connected to the welding torch connecting member (300), so as to be configured to drive the welding torch connecting member (300) to slide on the angle adjustment plate (200) under the straight-swing working condition.

2. The welding torch swing angle conversion device according to claim 1, characterized in that: The angle adjustment structure (600) comprises a first bolt (610) and a second bolt (620); The first end is pivotally connected to the lifting connection member (100) via the first bolt (610); The second bolt (620) is used to be fastened to the first end and the lifting connection member (100) to limit the first end from rotating around the axis of the first bolt (610).

3. The welding torch swing angle conversion device according to claim 2, characterized in that: The lifting connection member (100) is provided with a sliding groove (121), and the sliding groove (121) is arc-shaped and extends around the axis of the first bolt (610); The second bolt (620) is inserted into the sliding groove (121) and is threadedly connected to the first end to press the lifting connection member (100) against the first end. The second bolt (620) can slide along the extension direction of the sliding groove (121) when the lifting connection member (100) is loosened.

4. The welding torch swing angle conversion device according to claim 1, characterized in that: The welding torch swing angle conversion device also includes a swing arm (800), and two ends of the swing arm (800) are respectively pivotally connected to the straight swing connection member (400) and the welding torch connection member (300).

5. The welding torch swing angle conversion device according to claim 4, characterized in that: The direct-swing connecting member (400) comprises a transmission block (410) and a direct-swing connecting rod (420); The transmission block (410) is pivotally connected to the rocker arm (800); One end of the direct-swing connecting rod (420) is fixed to the transmission block (410), and the other end is used to be fixed to the direct-swing output part.

6. The welding torch swing angle conversion device according to claim 4, characterized in that: A first slide rail (900) is fixed on the angle adjustment plate (200), and the first slide rail (900) extends from the first end to the second end; A first sliding block (1000) is fixed on the welding torch connecting member (300), and the first sliding block (1000) is slidably connected to the first sliding rail (900).

7. The welding torch swing angle conversion device according to claim 6, characterized in that: The welding torch connecting piece (300) comprises a slider connecting plate (310) and a welding torch handle (320); The slider connecting plate (310) is fixedly connected to the first slider (1000) and is also pivotally connected to the rocker arm (800); The welding torch handle (320) is slidably connected to the slider connecting plate (310), and a sliding path extends vertically. The welding torch handle (320) is fastened to the slider connecting plate (310) by bolt connection.

8. The welding torch swing angle conversion device according to claim 7, characterized in that: The welding torch connection piece (300) further comprises a welding torch fastening block (330); The welding torch fastening block (330) is fixed to the welding torch handle (320) and is provided with a through hole for inserting and fastening the welding torch (700).

9. The welding torch swing angle conversion device according to claim 1, characterized in that: The lifting connection member (100) comprises a lifting connection plate (110) and a slide rail corner plate (120); The lifting connection plate (110) is used to be fixed to the lifting output part; The slide rail corner plate (120) is fixed to the lifting connection plate (110) and connected to the first end via the angle adjustment structure (600); A second slide rail (1100) is fixed on the slide rail corner plate (120), the second slide rail (1100) extends vertically, and a second slider (1200) is slidably connected thereto, and the second slider (1200) is used to be fixed to the body of the automatic straight swing welding machine (500).

10. A welding device, characterized in that: It comprises an automatic vertical swing welding machine (500) and a welding torch swing angle changing device as claimed in any one of claims 1 to 9; The automatic vertical swing welding machine (500) comprises a lifting output part and a vertical swing output part, wherein the vertical swing output part is fixed to the lifting output part; The lifting connection member (100) is fixed to the lifting output portion, and the direct-swing connection member (400) is fixed to the direct-swing output portion.

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