A grid type bottom plate assembly and a welding method thereof

Abstract

The application discloses a grid type bottom plate assembly and a welding method thereof. The welding method comprises the following steps: placing the grid rib on the bottom plate, and arranging the positioning part in the positioning groove; and welding the connection part of the positioning groove and the positioning part. The grid rib is placed on the bottom plate, and the positioning part is arranged in the positioning groove, so that the laser welding can be smoothly welded, the welding seam depth is ensured, the welding deformation is inhibited, and the technical problems that the welding deformation cannot be controlled by using the conventional argon arc welding, and the welding seam depth cannot meet the product use requirement are effectively solved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of metal piece welding, and particularly relates to a grid type bottom plate assembly and a welding method thereof. BACKGROUND

[0002] The grid type metal piece with a large size is difficult to be formed by machining a thick plate as a whole because of high raw material cost and machining cost, and large deformation caused by large material removal during machining. Therefore, the welding forming method is more economical. In the prior art, the conventional argon arc welding is generally used for welding. However, the conventional argon arc welding cannot control welding deformation and the weld penetration cannot meet the product use requirement because of the large product size and high requirement on weld penetration. SUMMARY

[0003] To solve the technical problems that the conventional argon arc welding cannot control welding deformation and the weld penetration cannot meet the product use requirement, the application provides a grid type bottom plate assembly and a welding method thereof.

[0004] In a first aspect, the application provides a welding method of a grid type bottom plate assembly, the bottom plate assembly comprising a bottom plate and a grid rib, one of the grid rib and the bottom plate being provided with a positioning groove, and the other being provided with a positioning part; the welding method of the grid type bottom plate assembly comprising:

[0005] placing the grid rib on the bottom plate so that the positioning part is arranged in the positioning groove;

[0006] welding the connection between the positioning groove and the positioning part.

[0007] In some embodiments, the welding of the connection between the positioning groove and the positioning part comprises:

[0008] preliminarily fixing the bottom plate and the grid rib by using a fastener;

[0009] positionally welding the connection between the positioning groove and the positioning part by using laser welding;

[0010] after the positionally welding, removing the fastener and continuously welding the connection between the bottom plate and the grid rib by using laser welding.

[0011] In some embodiments, after the continuously welding the connection between the bottom plate and the grid rib by using laser welding, the method further comprises welding the butt joint position which cannot be welded by laser welding by using manual argon arc welding.

[0012] In some embodiments, the positionally welding the connection between the positioning groove and the positioning part by using laser welding comprises:

[0013] adjusting the laser welding gun head to be 45 degrees with the horizontal direction, and using laser welding to positionally weld the inclined joint between the bottom plate and the grid rib inside;

[0014] adjusting the laser welding gun head to be parallel with the horizontal direction, and using laser welding to positionally weld the horizontal joint between the bottom plate and the grid rib outside.

[0015] In some embodiments, the grid rib is provided with a circular ring rib, and the bottom plate is provided with a stepped hole, the stepped hole comprising a first circular hole and a second circular hole, the diameter of the first circular hole being larger than that of the second circular hole, and the diameter of the first circular hole being equal to the diameter of the inner wall of the circular ring rib.

[0016] The positionally welding the joint between the positioning groove and the positioning part using laser welding further comprises: adjusting the laser welding gun head into the first circular hole, and using laser welding to positionally weld the circular joint between the circular ring rib and the first circular hole.

[0017] In some embodiments, the continuously welding the joint between the bottom plate and the grid rib using laser welding comprises:

[0018] continuously welding the horizontal joint between the bottom plate and the grid rib outside using laser welding;

[0019] continuously welding the inclined joint between the bottom plate and the grid rib inside using laser welding, after the continuously welding the horizontal joint between the bottom plate and the grid rib outside using laser welding and before the adjusting the laser welding gun head to be 45 degrees with the horizontal direction.

[0020] In some embodiments, the grid rib is provided with a circular ring rib, and the bottom plate is provided with a stepped hole, the stepped hole comprising a first circular hole and a second circular hole, the diameter of the first circular hole being larger than that of the second circular hole, and the diameter of the first circular hole being equal to the diameter of the inner wall of the circular ring rib.

[0021] The continuously welding the joint between the bottom plate and the grid rib using laser welding further comprises: continuously welding the circular joint between the circular ring rib and the first circular hole using laser welding, after the continuously welding the horizontal joint between the bottom plate and the grid rib outside using laser welding and before the adjusting the laser welding gun head to be 45 degrees with the horizontal direction.

[0022] In some embodiments, the joint that cannot be welded by laser welding at least comprises the inclined joint at the intersection of the rib plates of the grid rib.

[0023] In a second aspect, the present application provides a grid bottom plate assembly, comprising a bottom plate and a grid rib, wherein one of the grid rib and the bottom plate is provided with a positioning groove, and the other is provided with a positioning part; the positioning part is arranged in the positioning groove and welded.

[0024] In some embodiments, the grid rib is provided with a circular ring rib, the bottom plate is provided with a stepped hole, the stepped hole comprises a first circular hole and a second circular hole, the diameter of the first circular hole is greater than the diameter of the second circular hole, the diameter of the first circular hole is equal to the diameter of the inner wall of the circular ring rib, and the inner wall of the circular ring rib is welded at the connection with the first circular hole.

[0025] According to the grid type bottom plate assembly welding method provided by one or more embodiments of the present application, the grid rib is placed on the bottom plate, and the positioning part is arranged in the positioning groove, so that the laser welding can be smoothly welded, the welding depth is ensured, the welding seam has good forming quality after laser welding, the welding deformation is small, and the technical problems that the welding deformation cannot be controlled and the welding depth cannot meet the product use requirements by using conventional argon arc welding are effectively solved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A flowchart of the grid type bottom plate assembly welding method in the embodiment of the present application is shown;

[0027] Figure 2 A structure diagram of the bottom plate assembly in the embodiment of the present application is shown;

[0028] Figure 3 A structure diagram of a sectional view of the bottom plate in the embodiment of the present application is shown;

[0029] Figure 4 A structure diagram of a sectional view of the rib plate in the embodiment of the present application is shown;

[0030] Figure 5 A structure diagram of a partial sectional view of the butt joint part at the first position in the embodiment of the present application is shown;

[0031] Figure 6 A structure diagram of a partial sectional view of the butt joint part at the second position in the embodiment of the present application is shown;

[0032] Figure 7 A structure diagram of a partial sectional view of the butt joint part at the third position in the embodiment of the present application is shown;

[0033] Figure 8 A structure diagram of a partial sectional view of the butt joint part at the fourth position in the embodiment of the present application is shown;

[0034] Figure 9 A structure diagram of a partial sectional view of the butt joint part at the fifth position in the embodiment of the present application is shown.

[0035] Explanation of reference signs: 1 - base plate, 11 - positioning groove, 12 - stepped hole, 121 - first round hole, 122 - second round hole; 2 - grid rib, 21 - positioning part, 22 - round ring rib. DETAILED DESCRIPTION

[0036] In order to make the skilled person in the art to which the present application belongs more clearly understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor are within the scope of protection of the present application.

[0037] Please refer to Figures 1-9 The embodiment of the present application provides a grid type base plate assembly welding method, the base plate assembly includes a base plate 1 and a grid rib 2, the base plate 1 is provided with a positioning groove 11, and the grid rib 2 is provided with a positioning part 21; the grid type base plate assembly welding method comprises the following steps:

[0038] Step S1: placing the grid rib 2 on the base plate 1, so that the positioning part 21 is arranged in the positioning groove 11;

[0039] Step S2: welding the connection between the positioning groove 11 and the positioning part 21.

[0040] Specifically, the step S2 comprises:

[0041] Step S21: using a fastener to preliminarily fix the base plate 1 and the grid rib 2;

[0042] Step S22: using laser welding to positionally weld the connection between the positioning groove 11 and the positioning part 21;

[0043] Step S23: after the positionally welding is completed, the fastener is removed, and laser welding is used to continuously weld the connection between the positioning groove 11 and the positioning part 21.

[0044] Step S24: using manual argon arc welding to weld the butt joint part which cannot be welded in step S23.

[0045] In the embodiment, the positioning groove 11 is a grid V-shaped groove, the positioning part 21 is an inverted V-shaped chamfer, and the positioning groove 11 and the positioning part 21 are matched.

[0046] Of course, in some other embodiments, the positions of the positioning groove 11 and the positioning part 21 can be interchanged.

[0047] The grid type bottom plate assembly welding method provided by the embodiment of the present application places the grid rib 2 on the bottom plate 1, and sets the positioning part 21 in the positioning groove 11, so that the laser welding can be smoothly performed, the welding seam depth is ensured, the welding seam forming quality is good after laser welding, the welding deformation is small, and the technical problems that the welding deformation cannot be controlled and the welding seam penetration cannot meet the product use requirements in the conventional argon arc welding of the grid type bottom plate assembly are effectively solved.

[0048] In the embodiment of the present application, the butt joint parts have four conditions as shown in Figures 5-9 As shown in Figure 5 there is one horizontal butt joint part and one right 45-degree inclined butt joint part; as shown in Figure 6 there are one left 45-degree and one right 45-degree inclined butt joint parts respectively; as shown in Figure 7 there is one left 45-degree inclined butt joint part and one horizontal butt joint part; as shown in Figure 8 the rib plate intersection position of the grid rib 2, which has four inclined butt joint parts and cannot be welded by laser welding; as shown in Figure 9 including one circular butt joint part and one right 45-degree inclined butt joint part.

[0049] In some embodiments, the step S22 comprises:

[0050] Step S221: adjusting the laser welding gun head to be 45 degrees with the horizontal direction, and using laser welding to position and weld the inclined butt joint parts inside the bottom plate 1 and the grid rib 2;

[0051] Step S222: adjusting the laser welding gun head to be parallel to the horizontal direction, and using laser welding to position and weld the horizontal butt joint parts outside the bottom plate 1 and the grid rib 2.

[0052] In the embodiment, the inclined butt joint parts inside the bottom plate 1 and the grid rib 2 are positioned and welded by laser welding, and the horizontal butt joint parts outside the bottom plate 1 and the grid rib 2 are positioned and welded, so that the positioning of the bottom plate 1 and the grid rib 2 is realized, the fastener can be removed, the subsequent continuous welding is facilitated, and the welding quality is improved.

[0053] In some embodiments, in the step S221, the welding seam length for positioning and welding the inclined butt joint parts inside the bottom plate 1 and the grid rib 2 is 100 mm, and the welding seam spacing is 200 mm. By setting the welding seam in this way, the welding deformation can be better inhibited, and the welding quality is improved.

[0054] In some embodiments, the grid rib 2 is provided with a circular ring rib 22, the bottom plate 1 is provided with a stepped hole 12, the stepped hole 12 includes a first circular hole 121 and a second circular hole 122, the diameter of the first circular hole 121 is greater than the diameter of the second circular hole 122, and the diameter of the first circular hole 121 is equal to the diameter of the inner wall of the circular ring rib 22; the step S22 further includes: step S223: adjusting the laser welding gun head into the first circular hole 121, and using laser welding to positionally weld the circularly butted part of the circular ring rib 22 and the first circular hole 121. By using laser welding to positionally weld the circularly butted part of the circular ring rib 22 and the first circular hole 121, the positioning of the bottom plate 1 and the grid rib 2 can be further performed, which facilitates subsequent continuous welding and improves the welding quality.

[0055] In some embodiments, in steps S222 and S223, the length of the welding seam for positionally welding the horizontally butted part and the circularly butted part is 100 mm, and the welding seam spacing is 300 mm. By setting the welding seam in this way, the welding deformation can be better inhibited, and the welding quality can be improved.

[0056] In some embodiments, in step S23, the continuous welding of the connection between the positioning groove 11 and the positioning part 21 using laser welding includes:

[0057] Step S231: using laser welding to continuously weld the horizontally butted part outside the bottom plate 1 and the grid rib 2;

[0058] Step S232: adjusting the laser welding gun head to form a 45-degree angle with the horizontal direction, and using laser welding to continuously weld the obliquely butted part inside the bottom plate 1 and the grid rib 2.

[0059] In this embodiment, the horizontally butted part outside the bottom plate 1 and the grid rib 2 is continuously welded using laser welding, and the obliquely butted part inside the bottom plate 1 and the grid rib 2 is continuously welded. On the premise of the previous positionally welding, all the welding seams can be rapidly welded, the welding efficiency is improved, and the butted part outside is welded first, which can further position the bottom plate 1 and the grid rib 2. After the welding is completed, the welding deformation is small, and the welding quality is high.

[0060] In some embodiments, the grid rib 2 is provided with a circular ring rib 22, the bottom plate 1 is provided with a stepped hole 12, the stepped hole 12 includes a first circular hole 121 and a second circular hole 122, the diameter of the first circular hole 121 is greater than the diameter of the second circular hole 122, and the diameter of the first circular hole 121 is equal to the diameter of the inner wall of the circular ring rib 22; before the step S232 of adjusting the laser welding gun head to form an angle of 45 degrees with the horizontal direction, the step S232 further includes: using laser welding to continuously weld the circular abutment part of the circular ring rib 22 and the first circular hole 121. Before the laser welding gun head is adjusted to form an angle of 45 degrees with the horizontal direction, the circular abutment part of the circular ring rib 22 and the first circular hole 121 is continuously welded, the previous laser welding gun head can be used to continue welding at an angle parallel to the horizontal direction, the laser welding gun head does not need to be frequently adjusted to form an angle with the horizontal direction, and the welding efficiency can be improved.

[0061] In some embodiments, in the step S24, the abutment part that cannot be welded by laser welding in the step S23 at least includes the inclined abutment part at the intersection position of the rib plate of the grid rib 2. Since the inclined abutment part at the intersection position of the rib plate of the grid rib 2 cannot be welded by laser welding, manual argon arc welding is used for welding here.

[0062] In some embodiments, in the step S24, before the abutment part that cannot be welded by laser welding in the step S23 is welded by using manual argon arc welding, the step S24 further includes: using a motor-driven rotary file to grind the inclined abutment part that cannot be welded by laser welding into a V-shaped welding groove. Using a motor-driven rotary file to grind the inclined abutment part that cannot be welded by laser welding into a V-shaped welding groove facilitates manual argon arc welding, the penetration depth of the weld can be ensured, and the welding quality is ensured.

[0063] In some embodiments, all the abutment parts that cannot be welded by laser welding in the steps S22 and S23 are welded by using manual argon arc welding. All the abutment parts that cannot be welded by laser welding are welded by using manual argon arc welding, and the remaining abutment parts are welded by using laser welding.

[0064] Based on the same inventive concept, referring to Figures 2-4 The embodiment of the present application also proposes a grid type bottom plate assembly, which comprises a bottom plate 1 and a grid rib 2, the bottom plate 1 is provided with a positioning groove 11, and the grid rib 2 is provided with a positioning part 21; the positioning part 21 is arranged in the positioning groove 11 and is welded.

[0065] In the embodiment, the positioning groove 11 is a grid V-shaped groove, the positioning part 21 is an inverted V-shaped chamfer, and the positioning groove 11 and the positioning part 21 are matched.

[0066] Of course, in other embodiments, the positions of the positioning groove 11 and the positioning part 21 can be interchanged.

[0067] The grid type bottom plate assembly provided by the embodiment of the present application is arranged in the positioning groove 11 through the positioning part 21 and welded, which can ensure smooth welding, welding seam depth, good welding seam forming quality, small welding deformation and effectively solve the technical problems that welding deformation cannot be controlled and welding seam depth cannot meet the product use requirements when the grid type bottom plate assembly is welded by conventional argon arc welding.

[0068] In some embodiments, the grid rib 2 is provided with a circular ring rib 22, the bottom plate 1 is provided with a stepped hole 12, the stepped hole 12 includes a first circular hole 121 and a second circular hole 122, the diameter of the first circular hole 121 is greater than the diameter of the second circular hole 122, the diameter of the first circular hole 121 is equal to the diameter of the inner wall of the circular ring rib 22, and the inner wall of the circular ring rib 22 is welded at the connection with the first circular hole 121. By welding the inner wall of the circular ring rib 22 at the connection with the first circular hole 121, the welding deformation can be further reduced, and the welding quality and firmness can be improved.

[0069] In the present application, unless otherwise explicitly specified and limited, "on" or "under" of a first feature to a second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "over" of a first feature to a second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. "Under", "below" and "under" of a first feature to a second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0070] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0071] In the present application, unless specifically defined otherwise and limited, the terms "connected", "fixed", and the like should be construed as being broad, for example, "fixed" can be fixed connection, or detachable connection, or integrated; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through intermediate medium; can be internal connection of two elements, or interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0072] In addition, in the present application, the description such as "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically defined.

[0073] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A method of welding a grid-type floor assembly, characterized by, The bottom plate assembly comprises a bottom plate and a grid rib, one of which is provided with a positioning groove, and the other is provided with a positioning part, the grid rib is provided with a circular ring rib, and the bottom plate is provided with a stepped hole, the stepped hole comprises a first circular hole and a second circular hole, the diameter of the first circular hole is greater than that of the second circular hole, and the diameter of the first circular hole is equal to that of the inner wall of the circular ring rib. The grid type bottom plate assembly welding method comprises: Placing the grid rib on the bottom plate, and arranging the positioning part in the positioning groove; Using laser welding to perform positioning welding on the connecting part of the positioning groove and the positioning part, and further comprising: adjusting the laser welding gun head into the first circular hole, and using laser welding to perform positioning welding on the circularly connected part of the circular ring rib and the first circular hole.

2. The method of claim 1, wherein, The welding on the connecting part of the positioning groove and the positioning part comprises: Preliminarily fixing the bottom plate and the grid rib by using fasteners; Using laser welding to perform positioning welding on the connecting part of the positioning groove and the positioning part; After positioning welding is completed, the fasteners are removed, and continuous welding is performed on the connecting part of the bottom plate and the grid rib by using laser welding.

3. The method of claim 2, wherein, After the continuous welding of the connecting part of the bottom plate and the grid rib by using laser welding, further comprising: using manual argon arc welding to weld the connecting part that cannot be welded by laser welding.

4. The method of claim 2, wherein The positioning welding on the connecting part of the positioning groove and the positioning part by using laser welding comprises: Adjusting the laser welding gun head to form a 45-degree angle with the horizontal direction, and using laser welding to perform positioning welding on the inclined connecting part inside the bottom plate and the grid rib; Adjusting the laser welding gun head to be parallel to the horizontal direction, and using laser welding to perform positioning welding on the horizontal connecting part outside the bottom plate and the grid rib.

5. The method of claim 2, wherein The continuous welding of the connecting part of the bottom plate and the grid rib by using laser welding comprises: Using laser welding to perform continuous welding on the horizontal connecting part outside the bottom plate and the grid rib; Adjusting the laser welding gun head to form a 45-degree angle with the horizontal direction, and using laser welding to perform continuous welding on the inclined connecting part inside the bottom plate and the grid rib.

6. The grid type bottom plate assembly welding method according to claim 5, wherein After the continuous welding of the horizontal connecting part outside the bottom plate and the grid rib by using laser welding, and before the laser welding gun head is adjusted to form a 45-degree angle with the horizontal direction, further comprising: using laser welding to perform continuous welding on the circularly connected part of the circular ring rib and the first circular hole.

7. The method of claim 3, wherein The connecting part that cannot be welded by laser welding at least comprises the inclined connecting part at the intersection position of the rib plate of the grid rib.

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