A welding gun adjusting structure for inner corner welding of steel bridge U-shaped ribs

Abstract

The utility model discloses a kind of welding gun adjusting structure for the inner angle welding of steel bridge U-shaped rib, belong to the adjusting structure of welding device, including fixed block, horizontal adjusting block and vertical adjusting block, fixed block one end is fixed with moving beam, the other end is equipped with vertical guide rail;Vertical adjusting block is slided with guide rail by recess, can be locked by vertical fixed bolt;Horizontal adjusting block recess end is slided with vertical adjusting block transversely, is fixed by transverse fixed bolt, two rotatable welding gun fixed structures are equipped in flat end, welding gun fixed structure is connected by hinge structure, clamping space is formed by clamping, it is rotatably connected with horizontal adjusting block by pivot shaft, locked by angle fixed bolt.The utility model can realize welding gun horizontal and vertical and angle all-around adjustment, it is convenient to operate, fixed stable, can accurately meet the narrow space operation demand of steel bridge U-shaped rib inner angle welding.

Description

Technical Field

[0001] This utility model relates to an adjustment structure for a welding device, and more particularly to a welding torch adjustment structure for welding the inner corner of a U-shaped rib of a steel bridge. Background Technology

[0002] U-ribs are important components widely used in steel bridge construction, named for their resemblance to the English letter "U". Welding U-ribs onto the steel plates of steel beams provides high strength and stiffness, effectively enhancing the stability and load-bearing capacity of the bridge structure. With technological advancements, hot-rolled variable-thickness U-ribs feature gradually thickening sections at the ends of the side flanges of the steel beam, increasing the contact area between the U-rib and the top plate of the steel box girder, thus improving welding quality and cross-sectional stiffness. By optimizing its geometry, hot-rolled variable-thickness U-ribs can reduce stress concentration at the top of the U-rib and the opening of the transverse diaphragm, decreasing the local deflection of the top plate under wheel loads. Its moment of inertia is significantly increased compared to U-ribs of uniform thickness, better meeting the mechanical requirements of bridge structures.

[0003] Currently, most techniques involve welding the U-shaped ribs to the steel plate on the outside. To improve the welding strength of the U-shaped ribs, it is necessary to weld them to the steel plate on the inside of the slender and narrow U-shaped ribs. Welding U-shaped ribs generally uses a carbon dioxide gas shielded welding machine, primarily for low-carbon steel and low-alloy high-strength steel. This method offers high welding productivity and is perfectly suitable for welding U-shaped ribs in steel bridges. Welding the outside of the U-shaped ribs is relatively convenient, but welding the inside presents certain challenges.

[0004] For welding the inner side of the U-shaped muscle, the existing technology uses a slender moving beam, and a moving device drives the moving beam to move linearly. A welding torch is installed at the end of the moving beam and extends into the U-shaped muscle for welding.

[0005] The existing fixing device directly fixes the welding gun to the moving beam with a clamp. The position of the welding gun cannot be adjusted, and it is difficult to accurately align the welding gun with the weld position, thus affecting the welding quality of the inner side of the U-shaped rib.

[0006] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0007] The purpose of this invention is to provide a welding torch adjustment structure for welding the inner corners of U-shaped ribs in steel bridges. This structure allows for omnidirectional adjustment of the welding torch in terms of horizontal, vertical, and angle, offering convenient operation, stable fixation, and suitability for welding the inner corners of U-shaped ribs in steel bridges. It solves the problem in existing U-shaped rib welding techniques where the welding torch position cannot be adjusted, making it difficult to accurately align the torch with the weld seam, thus affecting the welding quality of the inner side of the U-shaped rib.

[0008] To achieve the above objectives, this utility model provides a welding torch adjustment structure for welding the inner corner of U-shaped ribs of steel bridges, including a fixing block, a horizontal adjustment block, and a vertical adjustment block; One end of the fixed block is a flat plate for fixed connection with the moving beam, and the other end is provided with two parallel guide rails, which are arranged along the vertical direction of the welding gun adjustment structure; the vertical adjustment block is a rectangular block structure with two grooves on one side, which slide with the guide rails to realize the vertical adjustment block moving vertically along the guide rails. The vertical adjustment block has a first threaded hole on each of its two side walls that extends to the side wall of the groove. A vertical fixing bolt is installed in the first threaded hole. One end of the vertical fixing bolt contacts the side of the guide rail. Tightening the vertical fixing bolt can fix the vertical adjustment block to the fixing block. One end of the horizontal adjustment block is a grooved end, which is set in the horizontal direction and slides in conjunction with the vertical adjustment block. The other end is a flat end, which is used to install the welding gun. The side wall of the horizontal adjustment block is provided with a second threaded hole that penetrates to the side wall of its groove. A horizontal fixing bolt is installed in the second threaded hole. One end of the horizontal fixing bolt contacts the upper side of the vertical adjustment block. Tightening the horizontal fixing bolt can fix the horizontal adjustment block and the vertical adjustment block. The flat end of the horizontal adjustment block is provided with two rotatable welding gun fixing structures, which are rotatably mounted on the horizontal adjustment block via a pivot shaft. The welding torch fixing structure includes a first fixing block and a second fixing block. After the first fixing block and the second fixing block are engaged, a clamping space adapted to the welding torch is formed in the middle. One end of the first fixing block and the second fixing block are connected by a hinge structure, and the other end is provided with a pivot hole. One end of the pivot shaft is fixed to the horizontal adjustment block, and the pivot shaft passes through the pivot hole of the clamped first fixing block and the second fixing block and its outer end is engaged with a nut.

[0009] In one or more embodiments, the flat end of the fixing block is fixed to the moving beam by welding or bolting.

[0010] In one or more embodiments, the clearance between the guide rail and the groove of the vertical adjustment block is 0.1-2 mm.

[0011] In one or more embodiments, the end of the vertical fixing bolt that contacts the guide rail and the end of the horizontal fixing bolt that contacts the vertical adjusting block are both provided with high and low temperature resistant nitrile rubber pads.

[0012] In one or more embodiments, the other end of the vertical fixing bolt and the other end of the horizontal fixing bolt are each provided with a handle with anti-slip texture.

[0013] In one or more embodiments, the flat end of the horizontal adjustment block, corresponding to the installation position of the welding gun fixing structure, is provided with an angle scale line for indicating the angle of the welding gun.

[0014] Compared with existing technologies, the welding torch adjustment structure for inner corner welding of U-shaped ribs in steel bridges according to this utility model has the advantages of multi-dimensional adjustment and high adaptability, and can accurately match the welding requirements of U-shaped ribs in narrow spaces. The vertical adjustment block slides with the guide rail, and the horizontal adjustment block is laterally adapted to the vertical adjustment block. Combined with the adjustment of the welding torch fixing structure around the pivot axis, the vertical, horizontal and angle adjustments of the welding torch can be realized in all directions. It can flexibly cope with the position and bevel angle requirements of inner corner welds of U-shaped ribs of different specifications, and avoid the welding deviation caused by the single adjustment of traditional structures. Attached Figure Description

[0015] Figure 1 This is a side view of a welding torch adjustment structure for inner corner welding of U-shaped ribs of steel bridges, according to an embodiment of the present invention.

[0016] Figure 2 This is a top view of a welding torch adjustment structure for welding the inner corner of a U-shaped rib of a steel bridge, according to an embodiment of the present invention.

[0017] Figure 3 yes Figure 1 A schematic diagram of the K-direction.

[0018] Figure 4 This is a schematic diagram of a welding torch fixing structure for adjusting the welding torch for welding the inner corner of a U-shaped rib of a steel bridge, according to an embodiment of the present invention.

[0019] Figure 5 This is a diagram showing the usage state of this utility model.

[0020] Explanation of key figure labels: 101-Moving beam, 102-Welding torch, 2-Fixing block, 201-Guide rail, 3-Horizontal adjustment block, 301-Horizontal fixing bolt, 302-Welding torch fixing structure, 3021-First fixing block, 3022-Second fixing block, 3023-Hinge structure, 303-Pivot shaft, 4-Vertical adjustment block, 401-Vertical fixing bolt, AU-shaped rib. Detailed Implementation

[0021] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, it should be understood that the scope of protection of this utility model is not limited to the specific embodiments.

[0022] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0023] like Figures 1 to 4 As shown, according to an embodiment of the present invention, a welding torch adjustment structure for welding the inner corner of a U-shaped rib of a steel bridge is provided. The adjustment structure is set on a movable beam 101 and is used to fix the position and angle of the welding torch 102.

[0024] Specifically, the welding torch adjustment structure for welding the inner corners of the U-shaped ribs of the steel bridge includes a fixed block 2, a vertical adjustment block 4, and a horizontal adjustment block 3. The fixed block 2 is used to fix it to the moving beam 101. The vertical adjustment block 4 cooperates with the fixed block 2 to adjust the vertical position. The horizontal adjustment block 3 is used to mount the welding torch 102. The horizontal adjustment block 3 can move relative to the fixed block 2.

[0025] One end of the fixing block 2 is a flat plate, which can be fixedly connected to the moving beam 101 by welding or bolts. The other end is provided with two parallel guide rails 201, which are set vertically along the welding gun adjustment structure. A vertical adjustment block 4 is slidably installed on the guide rail 201.

[0026] The vertical adjustment block 4 is a rectangular block structure with two grooves on one side for inserting the guide rail 201, thus enabling the vertical adjustment block 4 to move. The left and right sides of the vertical adjustment block 4 (as shown in the image) Figure 2 The vertical adjustment block 4 (shown on both the upper and lower sides) is provided with a first threaded hole, which penetrates the side wall of the vertical adjustment block 4 and is connected to the side wall of the groove. A vertical fixing bolt 401 is provided in the first threaded hole. One end of the vertical fixing bolt 401 can contact the side of the guide rail 201. By tightening the vertical fixing bolt 401, the vertical adjustment block 4 can be fixed to the fixing block 2. The other end of the vertical fixing bolt 401 is provided with a handle with anti-slip texture, which facilitates manual rotation of the vertical fixing bolt 401.

[0027] The length of the vertical adjustment block 4 must be greater than the length of the guide rail 201. The guide rail 201 will not exceed the end of the vertical adjustment block 4, thus not affecting the horizontal movement of the horizontal adjustment block 3.

[0028] Specifically, a rubber pad, preferably resistant to high and low temperatures nitrile rubber, is provided at the end of the vertical fixing bolt 401 that contacts the guide rail 201, which can increase the friction between the bolt and the guide rail 201.

[0029] The clearance between the guide rail 201 and the groove is usually designed to be 0.1-2mm. This avoids welding dust from accumulating in the gap, which would exacerbate wear if the gap is too tight, and also prevents the horizontal adjustment block 3 from shifting laterally if the gap is too large, thus affecting the positioning accuracy of the welding torch.

[0030] One end of the horizontal adjustment block 3 is a groove end, into which the vertical adjustment block 4 can be inserted; the other end is a flat plate end, used to install the welding torch 102.

[0031] On the upper and lower sides of the vertical adjustment block 4 (such as...) Figure 1 The upper side (as shown) is provided with a second threaded hole, which penetrates the side wall of the horizontal adjusting block 3 and connects to the side wall of the groove. A transverse fixing bolt 301 is provided in the second threaded hole. One end of the transverse fixing bolt 301 can contact the upper and lower sides of the vertical adjusting block 4. By tightening the transverse fixing bolt 301, the horizontal adjusting block 3 and the vertical adjusting block 4 can be fixed. The other end of the transverse fixing bolt 301 is provided with a handle with anti-slip texture, which facilitates manual rotation of the transverse fixing bolt 301.

[0032] Specifically, a rubber pad, preferably resistant to high and low temperatures nitrile rubber, is provided at the end of the horizontal fixing bolt 301 that contacts the vertical adjusting block 4, which can increase the friction between the bolt and the vertical adjusting block 4.

[0033] like Figure 3 , 4 As shown, two rotatable welding torch fixing structures 302 are provided on the flat end of the horizontal adjustment block 3. The torch fixing structures are rotatably mounted on the horizontal adjustment block 3 via a pivot shaft 303. A nut is fitted to the outer end of the pivot shaft 303, and the nut fixes the adjusted torch fixing structure. The welding torch fixing structure 302 includes a first fixing block 3021 and a second fixing block 3022. When the first fixing block 3021 and the second fixing block 3022 are engaged, a clamping space is formed between them that precisely matches the outer diameter of the welding torch 102, which is used to install the welding torch 102. This structure can effectively counteract high-frequency vibrations (such as arc impact and wire feeder vibration) during the welding process and prevent axial displacement or radial wobble of the welding torch.

[0034] The first fixing block 3021 and the second fixing block 3022 are connected at one end by a hinge structure 3023, thus forming an openable clamping structure that can easily hold the welding torch 102. After closing, the other ends of the first fixing block 3021 and the second fixing block 3022 are respectively provided with pivot holes, in which pivot shafts 303 are provided. One end of the pivot shaft 303 is fixed to the horizontal adjustment block 3. The pivot shaft 303 passes through the clamped first fixing block 3021 and the second fixing block 3022 and its outer end is engaged with a nut, thereby allowing the welding torch fixing structure to be rotated to adjust the position of the welding torch and the weld. After adjustment, the nut on the pivot shaft 303 is used to lock and fix it.

[0035] The horizontal adjustment block 3 has an angle scale line indicating the angle of the welding gun 102 at the installation position of the welding gun fixing structure 302 on the flat end, which makes it easy for the operator to quickly align and adjust the angle of the welding gun 102.

[0036] When in use, push the horizontal adjusting block 3 so that its groove end slides along the outer wall of the vertical adjusting block 4 to adjust the horizontal position of the welding gun 102. Rotate the horizontal fixing bolt 301 so that its end is in close contact with the upper side of the vertical adjusting block 4, thereby fixing the horizontal adjusting block 3 and the vertical adjusting block 4 together, and completing the vertical height adjustment of the welding gun.

[0037] Then, adjust the height of the vertical adjustment block 4 relative to the fixed block 2, rotate the fixing bolt 401 so that its end contacts the guide rail 201, and then fix the vertical adjustment block 4 and the fixed block 2 to complete the vertical height adjustment of the welding gun.

[0038] Afterwards, loosen the bolts on the pivot shaft 303 to rotate the first fixing block 3021 and the second fixing block 3022 around the pivot shaft 303 and adjust the angle of the welding torch 102. After the angle is adjusted to the correct position, tighten the angle fixing bolts again to ensure that the welding torch fixing structure 302 has no rotational play.

[0039] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A welding torch adjustment structure for welding the inner corners of U-shaped ribs in steel bridges, characterized in that, It includes a fixed block (2), a horizontal adjustment block (3), and a vertical adjustment block (4); One end of the fixed block (2) is a flat plate for fixed connection with the moving beam (101), and the other end is provided with two parallel guide rails (201). The guide rails (201) are arranged along the vertical direction of the welding gun adjustment structure. The vertical adjustment block (4) is a rectangular block structure with two grooves on one side. The grooves slide with the guide rails (201) to realize the vertical movement of the vertical adjustment block (4) along the guide rails (201). The vertical adjustment block (4) has a first threaded hole on each side wall that extends to the side wall of the groove. A vertical fixing bolt (401) is installed in the first threaded hole. One end of the vertical fixing bolt (401) contacts the side of the guide rail (201). Tightening the vertical fixing bolt (401) can fix the vertical adjustment block (4) and the fixing block (2). One end of the horizontal adjustment block (3) is a groove end, which is set in the horizontal direction and slides with the vertical adjustment block (4). The other end is a flat end, which is used to install the welding gun (102). The side wall of the horizontal adjustment block (3) is provided with a second threaded hole that penetrates to the side wall of its groove. A horizontal fixing bolt (301) is installed in the second threaded hole. One end of the horizontal fixing bolt (301) contacts the upper side of the vertical adjustment block (4). Tightening the horizontal fixing bolt (301) can fix the horizontal adjustment block (3) and the vertical adjustment block (4). The flat end of the horizontal adjustment block (3) is provided with two rotatable welding gun fixing structures (302), which are rotatably mounted on the horizontal adjustment block (3) via a pivot shaft (303); The welding torch fixing structure (302) includes a first fixing block (3021) and a second fixing block (3022). After the first fixing block (3021) and the second fixing block (3022) are engaged, a clamping space adapted to the welding torch (102) is formed in the middle. One end of the first fixing block (3021) and the second fixing block (3022) are connected by a hinge structure (3023), and the other end is provided with a pivot hole. One end of the pivot shaft (303) is fixed on the horizontal adjustment block (3). The pivot shaft (303) passes through the pivot hole of the clamped first fixing block (3021) and the second fixing block (3022) and its outer end is engaged with a nut.

2. The welding torch adjustment structure for inner corner welding of U-shaped ribs in steel bridges according to claim 1, characterized in that, The flat end of the fixed block (2) is fixed to the movable beam (101) by welding or bolt connection.

3. The welding torch adjustment structure for welding the inner corners of U-shaped ribs in steel bridges according to claim 1, characterized in that, The clearance between the guide rail (201) and the groove of the vertical adjustment block (4) is 0.1-2mm.

4. The welding torch adjustment structure for inner corner welding of U-shaped ribs in steel bridges according to claim 1, characterized in that, The ends of the vertical fixing bolts (401) that contact the guide rail (201) and the ends of the horizontal fixing bolts (301) that contact the vertical adjusting block (4) are both provided with high and low temperature resistant nitrile rubber pads.

5. The welding torch adjustment structure for inner corner welding of U-shaped ribs in steel bridges according to claim 4, characterized in that, The other end of the vertical fixing bolt (401) and the other end of the horizontal fixing bolt (301) are both provided with handles with anti-slip textures.

6. The welding torch adjustment structure for inner corner welding of U-shaped ribs in steel bridges according to claim 1, characterized in that, The flat end of the horizontal adjustment block (3) corresponds to the installation position of the welding gun fixing structure (302) and is provided with an angle scale line for indicating the angle of the welding gun (102).

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