Narrow-groove welding joint structure

Abstract

The utility model discloses a narrow groove welding joint structure, which relates to the technical field of welding joints, and comprises a first welding plate and a butt joint block, one side of the first welding plate is provided with a second welding plate, and adjacent ends of the first welding plate and the second welding plate are respectively provided with a welding mechanism. According to the narrow-groove welding joint structure, firstly, the root gap is welded, the first welding plate and the second welding plate are welded together for the first time, then, the arc-shaped connecting section and the second V-shaped groove are welded, and finally, the first V-shaped groove is welded, through the arrangement of the first V-shaped groove and the second V-shaped groove, the groove position can be divided into two layers, the first V-shaped groove is shallow and wide, and the width of the first V-shaped groove is large. The second V-shaped groove is steep and narrow, a double-layer welding connector is formed, different welding depths and filling material flowing paths can be achieved on the same welding connector, the contact area of the welding connector is increased through the arc-shaped connecting section and the root gap, and the welding uniformity and the welding quality of the narrow-groove welding connector structure are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding joints, and specifically relates to a narrow groove welding joint structure. Background Technique

[0002] A welding joint refers to the process of connecting two or more metal parts by melting a metal filler material. This connection method is widely used in various industrial fields, including manufacturing, construction, aerospace, etc. Among them, the narrow groove welding joint structure is a common type of welding joint, usually used to connect thinner metal plates or pipes to reduce the heat input during welding and reduce welding deformation.

[0003] However, the existing narrow groove welding joint structure has the following disadvantages. Since most narrow groove welding joint structures usually adopt simple structures such as "Y" shape and "V" shape, it is not convenient to provide more contact area and flow path of the filler material according to welding requirements, resulting in a reduction in welding strength and quality. Therefore, it is necessary to improve the existing narrow groove welding joint structure. Content of the Utility Model

[0004] The purpose of the utility model is to provide a narrow groove welding joint structure to solve the problems in the above background technique that the existing narrow groove welding joint structure in the current market has a simple structure, is not convenient to provide more contact area and flow path of the filler material according to welding requirements, resulting in a reduction in welding strength and quality.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A narrow groove welding joint structure, including a first welding plate and a docking block. A second welding plate is provided on one side of the first welding plate. Welding mechanisms are provided at adjacent ends of the first welding plate and the second welding plate. The docking block is arranged on the side of the first welding plate close to the welding mechanism.

[0006] Preferably, the welding mechanism includes a first V-shaped groove, a second V-shaped groove, an arc connecting section and a root gap. The first V-shaped groove, the second V-shaped groove, the arc connecting section and the root gap are provided at adjacent ends of the first welding plate and the second welding plate.

[0007] Preferably, one side of the first V-shaped groove is connected to the second V-shaped groove.

[0008] Preferably, the side of the second V-shaped groove away from the first V-shaped groove is connected to the arc connecting section.

[0009] Preferably, the side of the arc connecting section away from the second V-shaped groove is connected to the root gap.

[0010] Preferably, the included angle value of the second V-shaped groove is 30° - 40°, and the included angle value of the first V-shaped groove is 60° - 90°.

[0011] Preferably, the radius R of the arc connecting section is 2-3 mm.

[0012] Preferably, a docking groove is provided on one side of the second welding plate close to the docking block.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. A welding mechanism is provided. First, the root gap is welded to initially weld the first welding plate and the second welding plate together. Subsequently, the arc connecting section and the second V-shaped groove are welded, and finally the first V-shaped groove is welded. Through the settings of the first V-shaped groove and the second V-shaped groove, the groove can be divided into two layers. The first V-shaped groove is shallower and wider, and the second V-shaped groove is steeper and narrower, forming a double-layer welding interface. Different welding depths and filler material flow paths can be achieved on the same welding head. Moreover, the arc connecting section and the root gap also increase the contact area of the welded joint, improving the welding uniformity and welding quality of the narrow groove welded joint structure.

[0015] 2. A docking block and a docking groove are provided. Before welding, the docking block is slid into the docking groove from left to right or from right to left, and the connection between the docking block and the docking groove is made, so that the first welding plate and the second welding plate can be assisted in alignment, and then the welding work is carried out, improving the convenience of welding the narrow groove welded joint structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a front view structural schematic diagram of the present utility model;

[0017] Figure 2 is a top view sectional structural schematic diagram of the second welding plate of the present utility model;

[0018] Figure 3 is a front view structural schematic diagram of the welding mechanism of the present utility model;

[0019] Figure 4 is a three-dimensional structural schematic diagram of the welding mechanism of the present utility model;

[0020] Figure 5 is a three-dimensional structural schematic diagram of the docking groove of the present utility model.

[0021] In the figure: 1, the first welding plate; 2, the second welding plate; 3, the welding mechanism; 301, the first V-shaped groove; 302, the second V-shaped groove; 303, the arc connecting section; 304, the root gap; 4, the docking groove; 5, the docking block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-5 , the present utility model provides a technical solution: a narrow groove welded joint structure, including a first welding plate 1 and a docking block 5. A second welding plate 2 is provided on one side of the first welding plate 1, and welding mechanisms 3 are provided at adjacent ends of the first welding plate 1 and the second welding plate 2.

[0024] Please refer to Figure 1 and Figures 3-5 , the welding mechanism 3 includes a first V-shaped groove 301, a second V-shaped groove 302, an arc connecting section 303 and a root gap 304. The first V-shaped groove 301, the second V-shaped groove 302, the arc connecting section 303 and the root gap 304 are provided at adjacent ends of the first welding plate 1 and the second welding plate 2. One side of the first V-shaped groove 301 is connected to the second V-shaped groove 302. The side of the second V-shaped groove 302 away from the first V-shaped groove 301 is connected to the arc connecting section 303. The side of the arc connecting section 303 away from the second V-shaped groove 302 is connected to the root gap 304. The included angle value of the second V-shaped groove 302 is 30° - 40°, the included angle value of the first V-shaped groove 301 is 60° - 90°, and the radius R of the arc connecting section 303 is 2 - 3 mm.

[0025] During specific implementation, since most narrow groove welded joint structures usually adopt simple structures such as "Y" shape and "V" shape, it is not convenient to provide more contact areas and flow paths for filling materials according to welding requirements, resulting in a reduction in welding strength and quality. During welding, the root gap 304 can be welded first to initially weld the first welding plate 1 and the second welding plate 2 together. Subsequently, the arc connecting section 303 and the second V-shaped groove 302 are welded, and finally the first V-shaped groove 301 is welded. Through the settings of the first V-shaped groove 301 and the second V-shaped groove 302, the groove can be divided into two layers. The first V-shaped groove 301 is shallower and wider, and the second V-shaped groove 302 is steeper and narrower, forming a double-layer welded joint, which can achieve different welding depths and filling material flow paths on the same welding head. Moreover, the arc connecting section 303 and the root gap 304 also increase the contact area of the welded joint, improving the welding uniformity and welding quality of the narrow groove welded joint structure.

[0026] Please refer to Figures 1-5, the docking block 5 is arranged on one side of the first welding plate 1 close to the welding mechanism 3. A docking groove 4 is formed on one side of the second welding plate 2 close to the docking block 5. The cross-sectional shapes of the docking groove 4 and the docking block 5 are both trapezoidal, and the connection between the docking block 5 and the docking groove 4 is a wedge connection. The number of the docking blocks 5 is two.

[0027] During specific implementation, since the narrow groove welding joint structure requires manual assistance for alignment and welding during welding, it is time-consuming. Before welding, the docking block 5 can be slid into the docking groove 4 from left to right or from right to left, and the connection between the docking block 5 and the docking groove 4 can be made to assist in aligning the first welding plate 1 and the second welding plate 2, and then the welding work can be carried out, improving the convenience of welding the narrow groove welding joint structure.

[0028] Working principle: When using this narrow groove welding joint structure, first, before welding, the first welding plate 1 and the second welding plate 2 are assisted in alignment through the docking groove 4 and the docking block 5, and then welding is carried out through the welding mechanism 3. Welding starts from the root gap 304, followed by the arc connection section 303 and the second V-shaped groove 302, and finally the first V-shaped groove 301 until the first V-shaped groove 301 is filled with filler to complete the welding work. The welding mechanism 3 effectively improves the welding quality and uniformity. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0029] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A narrow groove welding joint structure, comprising a welding plate (1) and a butt joint block (5), characterized in that: A second welding plate (2) is provided on one side of the first welding plate (1), a welding mechanism (3) is provided on adjacent ends of the first welding plate (1) and the second welding plate (2), and the docking block (5) is arranged on a side of the first welding plate (1) close to the welding mechanism (3).

2. A narrow groove welding joint structure according to claim 1, characterized in that: The welding mechanism (3) comprises a No. 1 V-shaped groove (301), a No. 2 V-shaped groove (302), an arc-shaped connecting section (303) and a root gap (304); the No. 1 V-shaped groove (301), the No. 2 V-shaped groove (302), the arc-shaped connecting section (303) and the root gap (304) are provided at adjacent ends of the No. 1 welding plate (1) and the No. 2 welding plate (2).

3. A narrow groove welding joint structure according to claim 2, characterized in that: One side of the first V-shaped groove (301) is connected to the second V-shaped groove (302).

4. A narrow groove welding joint structure according to claim 3, characterized in that: The side of the second V-shaped groove (302) away from the first V-shaped groove (301) is connected to the arc-shaped connecting section (303).

5. A narrow groove welding joint structure according to claim 4, characterized in that: The side of the arc-shaped connecting section (303) away from the second V-shaped groove (302) is connected to the root gap (304).

6. A narrow groove welding joint structure according to claim 5, characterized in that: The included angle value of the second V-shaped groove (302) is 30°-40°, and the included angle value of the first V-shaped groove (301) is 60°-90°.

7. A narrow groove welding joint structure according to claim 6, characterized in that: The radius R of the arc-shaped connecting section (303) is 2-3 mm.

8. The narrow groove welding joint structure according to claim 1, characterized in that: A docking groove (4) is provided on one side of the second welding plate (2) close to the docking block (5).

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