A narrow gap welding device for a submerged arc welding machine

Abstract

The utility model relates to narrow gap welding device technical field of submerged arc welding machine, concretely is a narrow gap welding device of submerged arc welding machine, and it is convenient to use, including submerged arc welding machine cross arm, the front end of submerged arc welding machine cross arm is provided with the adjusting sliding block, the top of adjusting sliding block is provided with the adjusting rotating piece, the front end of adjusting rotating piece is provided with the adjusting sliding block, the front end of adjusting sliding block is provided with the submerged arc welding machine head, the front end of submerged arc welding machine head is provided with the submerged arc welding rod, the top of submerged arc welding rod is provided with the positioning track pipe, the inner wall of positioning track pipe is provided with several sliding square grooves, the middle part of each sliding square groove is provided with the sliding square, the middle part of each sliding square is provided with the pulley rotating seat, the middle part of each pulley rotating seat is provided with the rotating wire feeding wheel, the middle part of each sliding square is provided with the extension spring.

Description

Technical Field

[0001] This utility model relates to the technical field of narrow gap welding devices for submerged arc welding machines, specifically a narrow gap welding device for a submerged arc welding machine. Background Technology

[0002] As is well known, narrow-gap submerged arc welding (NGA) offers several advantages over conventional submerged arc welding. Firstly, the smaller bevel angle at the weld joint significantly reduces heat input and heat line energy, resulting in lower base metal dilution and a narrower heat-affected zone, which improves joint toughness and reduces welding deformation. Secondly, due to the bevel's dimensions, only two passes are required per layer, with the lower layer exhibiting a significant self-tempering effect on the upper layer, refining the weld metal grains and improving weld metal toughness. Therefore, it is widely used in straight and circumferential welds in industries such as nuclear power and shipbuilding. However, because the narrow-gap bevel is both narrow and deep, conventional submerged arc welding wire cannot reach the bottom of the bevel, making it difficult for the welding operator to control the wire's position at the bottom, leading to poor weld quality and hindering effective welding at the bevel bottom.

[0003] The narrow gap welding device for a submerged arc welding machine, with application number CN202323114625.4, can ensure that the welding auxiliaries fall evenly into the gap between two plates during use. However, its wire feeding wheel lacks an adjustment mechanism, which can easily cause it to loosen when positioning and feeding welding wires of different sizes. Therefore, we propose a narrow gap welding device for a submerged arc welding machine to solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a narrow-gap welding device for a submerged arc welding machine that is easy to use.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a narrow gap welding device for a submerged arc welding machine, comprising a submerged arc welding machine cross arm, an adjusting slider at the front end of the cross arm, an adjusting rotating component at the top of the adjusting slider, an adjusting slider at the front end of the adjusting rotating component, a submerged arc welding machine head at the front end of the adjusting slider, a submerged arc welding rod at the front end of the submerged arc welding machine head, a positioning track tube at the top of the submerged arc welding rod, a plurality of sliding square grooves on the inner wall of the positioning track tube, a sliding block in the middle of each sliding square groove, each sliding block cooperating with the sliding square groove, a pulley rotating seat in the middle of each sliding block, each pulley rotating seat cooperating with the sliding block, a rotating wire feeding wheel in the middle of each pulley rotating seat, and a telescopic spring in the middle of each sliding block.

[0008] Furthermore, an improvement of this utility model is that each rotating wire feeding wheel has an arc-shaped groove at its arc-shaped end.

[0009] Furthermore, the improvements of this utility model include that the edges of the submerged arc welding machine cross arm, adjusting slider, adjusting rotating component, adjusting slider, submerged arc welding machine head, submerged arc welding rod, positioning track tube, sliding square groove, sliding block, pulley rotating seat, rotating wire feeding wheel and telescopic spring are all set in a rounded shape.

[0010] Based on the above, the improvement of this utility model is that the cooperation between each sliding block and the sliding groove is a sliding fit.

[0011] Furthermore, an improvement of this utility model is that the cooperation between each pulley rotating seat and the sliding block is a fixed cooperation.

[0012] (III) Beneficial Effects

[0013] Compared with the prior art, this utility model provides a narrow gap welding device for a submerged arc welding machine, which has the following beneficial effects:

[0014] The narrow gap welding device of this submerged arc welding machine, through the setting of a cross arm, adjusting slider, adjusting rotating component, adjusting slider, submerged arc welding head, submerged arc welding rod, positioning track tube, sliding square groove, sliding block, pulley rotating seat, rotating wire feeding wheel and telescopic spring, ensures that the narrow gap welding device of the submerged arc welding machine will not loosen when positioning and feeding welding wire of different sizes, and can feed wire more smoothly. The narrow gap welding device of the submerged arc welding machine has better performance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the axial side structure of this utility model;

[0016] Figure 2 This is a partial axial sectional view of the present invention;

[0017] Figure 3 This utility model Figure 2 The diagram shows a partially enlarged axial side structure at point A.

[0018] In the diagram: 1. Submerged arc welding machine cross arm; 2. Adjusting slider; 3. Adjusting rotating component; 4. Submerged arc welding machine head; 5. Submerged arc welding rod; 6. Positioning track tube; 7. Sliding square groove; 8. Sliding block; 9. Pulley rotating seat; 10. Rotating wire feeding wheel; 11. Telescopic spring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-3 This utility model discloses a narrow gap welding device for a submerged arc welding machine, comprising a submerged arc welding machine horizontal arm 1, an adjusting slider 2 at the front end of the horizontal arm 1, an adjusting rotating component 3 at the top of the adjusting slider 2, an adjusting slider 2 at the front end of the adjusting rotating component 3, a submerged arc welding machine head 4 at the front end of the adjusting slider 2, a submerged arc welding rod 5 at the front end of the submerged arc welding machine head 4, a positioning track tube 6 at the top end of the submerged arc welding rod 5, and several sliding square grooves 7 on the inner wall of the positioning track tube 6. A sliding block 8 is provided in the middle of each sliding square groove 7, and each sliding block 8 cooperates with the sliding square groove 7. The cooperation between each sliding block 8 and the sliding square groove 7 is a sliding fit, allowing the sliding block 8 to slide along the sliding square groove 7. A pulley rotating seat 9 is provided in the middle of each sliding block 8, and each pulley rotating seat 9 cooperates with the sliding block 8. The connection between them is a fixed connection, which makes the fixation between the pulley rotating seat 9 and the sliding block 8 more secure. Each pulley rotating seat 9 is provided with a rotating wire feeding wheel 10 in the middle. Each rotating wire feeding wheel 10 is provided with a rounded groove at its arc end, so that the rotating wire feeding wheel 10 of the narrow gap welding device of the submerged arc welding machine can easily drive the submerged arc welding wire to move. Each sliding block 8 is provided with a telescopic spring 11 in the middle. The edges of the cross arm 1, adjusting slider 2, adjusting rotating component 3, adjusting slider 2, submerged arc welding machine head 4, submerged arc welding rod 5, positioning track tube 6, sliding square groove 7, sliding block 8, pulley rotating seat 9, rotating wire feeding wheel 10 and telescopic spring 11 are all rounded, so that the narrow gap welding device of the submerged arc welding machine will not scratch the user during use. The narrow gap welding device of the submerged arc welding machine will not loosen when positioning and feeding welding wires of different sizes, and can feed the wire more smoothly.

[0021] The submerged arc welding method of the cross arm 1, adjusting slider 2, adjusting rotating part 3, adjusting slider 2, submerged arc welding machine head 4, and submerged arc welding rod 5 of the submerged arc welding machine has been disclosed in detail in a narrow gap welding device for a submerged arc welding machine with application number CN202323114625.4.

[0022] In summary, the narrow gap welding device of this submerged arc welding machine allows for the adjustment of the distance between the pulley rotating seat 9 and the rotating wire feeding wheel 10 during the welding process through the sliding cooperation between each sliding block 8 and the sliding groove 7. This enables the feeding of welding wires of different diameters without loosening. After the welding wire is removed, the adjusting pulley rotating seat 9 can be reset by the telescopic spring 11. The narrow gap welding device of this submerged arc welding machine will not loosen when positioning and feeding welding wires of different sizes, and the wire feeding can be smoother. The narrow gap welding device of this submerged arc welding machine has a better performance.

[0023] The control method of this utility model is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0024] To better illustrate this embodiment, some parts in the accompanying drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions.

[0025] Furthermore, unless otherwise defined, the technical or scientific terms used in this application description shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "upper," "lower," "left," "right," "center," "vertical," "horizontal," "inner," and "outer," etc., used in this application description to indicate relative direction or positional relationship are used only to indicate relative orientation or positional relationship, and do not imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. When the absolute position of the described object changes, its relative positional relationship may also change accordingly, and therefore should not be construed as a limitation on this application. The terms "first," "second," "third," and similar terms used in this application description are used only for descriptive purposes to distinguish different components, and should not be construed as indicating or implying relative importance. The terms "a," "one," or "the," etc., used in this application description should not be construed as an absolute limitation on quantity, but should be construed as indicating the existence of at least one. The terms "including," "comprising," etc., used in this application description mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects.

[0026] Furthermore, it should be noted that, unless otherwise explicitly specified and limited, terms such as “installation,” “connection,” and “linkage” used in the description of this application should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can be a connection within two components. Those skilled in the art can understand its specific meaning in this application according to the specific circumstances.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A narrow gap welding device for a submerged arc welding machine comprising a submerged arc welding machine boom (1), characterized in that: An adjusting slider (2) is provided at the front end of the cross arm (1) of the submerged arc welding machine. An adjusting rotating part (3) is provided at the top of the adjusting slider (2). An adjusting slider (2) is provided at the front end of the adjusting rotating part (3). A submerged arc welding machine head (4) is provided at the front end of the adjusting slider (2). A submerged arc welding rod (5) is provided at the front end of the submerged arc welding machine head (4). A positioning track tube (6) is provided at the top end of the submerged arc welding rod (5). The inner wall of the positioning track tube (6) is provided with... Several sliding square grooves (7) are provided, and each sliding square groove (7) is provided with a sliding block (8) in the middle. Each sliding block (8) cooperates with the sliding square groove (7). Each sliding block (8) is provided with a pulley rotating seat (9) in the middle. Each pulley rotating seat (9) cooperates with the sliding block (8). Each pulley rotating seat (9) is provided with a rotating wire feeding wheel (10) in the middle. Each sliding block (8) is provided with a telescopic spring (11) in the middle.

2. A narrow gap welding apparatus for a submerged arc welding machine as claimed in claim 1, wherein: Each of the rotating wire feed wheels (10) has an arc groove at its arc end.

3. A narrow gap welding apparatus for a submerged arc welding machine as defined in claim 1, wherein: The edges of the submerged arc welding machine cross arm (1), adjusting slider (2), adjusting rotating component (3), submerged arc welding machine head (4), submerged arc welding rod (5), positioning track tube (6), sliding square groove (7), sliding block (8), pulley rotating seat (9), rotating wire feeding wheel (10) and telescopic spring (11) are all rounded.

4. A narrow gap welding apparatus for a submerged arc welding machine as defined in claim 1, wherein: The cooperation between each sliding block (8) and the sliding groove (7) is a sliding fit.

5. A narrow gap welding apparatus for a submerged arc welding machine as defined in claim 1, wherein: The engagement between each pulley rotating seat (9) and the sliding block (8) is a fixed engagement.

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