Spatial curved surface structure assembling and welding device and method

Abstract

The invention provides a space curved surface structure installing and welding device and method, and relates to the technical field of mechanical manufacturing steel structure welding, the space curved surface structure installing and welding device comprises a space curved surface structure limiting assembly, and the space curved surface structure limiting assembly is fixedly connected to a platform frame assembly; an effective curved surface is provided as a reference surface for the assembling and welding process of the spatial curved surface structure; the overturning pressing assembly A, the overturning pressing assembly B and the overturning pressing assembly C are fixedly connected to the space curved surface structure limiting assembly and used for pressing and fixing a frame of the space curved surface structure and controlling welding deformation. The curved rib plates are spliced into a net-shaped assembling and positioning space curved surface welding structural part, a space curved surface is used as a reference surface, net-shaped assembling and assembling precision is ensured by adopting an inserting plate structure, and by adjusting the corresponding position relation between a clamping groove structure between the curved rib plates and a groove structure of a platform bottom plate, the positioning accuracy of the net-shaped assembling and assembling is improved. And it is ensured that each curved rib plate is accurately assembled with the platform bottom plate, and effective implementation of the design scheme is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical manufacturing steel structure welding, and in particular to a spatial curved surface structure assembly welding device and method. Background Art

[0002] With the widespread application of streamlined design in the field of railway vehicles, how to ensure the effective implementation of streamlined EMU cab design is a topic that the locomotive manufacturing industry continues to explore. The drum-shaped side wall of the EMU streamlined cab is welded together by many different curved profiles and ribs in a certain spatial position. It is a typical and complex spatial curved surface welding structure.

[0003] There is generally no effective plane in the spatial curved surface structure that can be used as the design reference surface of the welding process device. At present, in order to simplify the construction difficulty, the spatial curved surface structure is broken up and divided into several parts for welding, and finally assembled together to complete the welding. The size of the spatial curved surface needs to be corrected after each welding. The welding process steps are cumbersome and complex and inefficient. The size of the spatial curved surface after the overall welding is difficult to guarantee, and the manufacturing cost of the welding device is expensive. The existing spatial curved surface structure welding process device cannot guarantee, for example, Figure 1 As shown, the curved shape and size of the drum-shaped side wall of the streamlined driver's cab of the FXD3 power vehicle (drum-shaped) meet the requirements of the product drawings, but cannot meet the production rhythm requirements of this vehicle model. Therefore, it is necessary to design and manufacture a spatial curved surface structure assembly welding device suitable for the drum-shaped side wall type of the streamlined driver's cab of the FXD3 power vehicle (drum-shaped).

[0004] The top skin of the space curved surface welded structure adopts a space curved surface shape, and the back is reinforced with welded mesh ribs, such as Figure 2 As shown. The existing spatial curved surface structure welding deformation control device is based on the analysis conclusion of the cause of welding deformation and the actual deformation state. For components with asymmetric welding structures and poor local welding stability, subassembly welding and local rigid fixing tooling are used for control. The specific measures are as follows:

[0005] (1) Use the top plate profiling tooling for positioning, assemble and weld the longitudinal and transverse grid reinforcement ribs into small components, and then weld them to the top plate after welding and shaping.

[0006] (2) When welding the top plate, add a rigid fixing tool on one side of the top plate to enhance the stability of the top plate.

[0007] Based on the above welding deformation control measures, in order to ensure the accuracy of welding shape correction and product consistency, such as Figure 3 As shown, process equipment is required for lower support. When the hydraulic press is pressed down in the middle, both sides are evenly loaded, which can achieve local small-scale correction. The product size after correction tends to be consistent, meeting the consistency requirements of batch products.

[0008] However, the disadvantages of the prior art are: 1) The existing spatial curved surface structure welding deformation control device does not provide an effective positioning dimension or reference surface as a basis for shape and position dimensions during the overall assembly welding of the component. When the welding deformation is large, the size of the component assembly welding will be out of control; 2) The existing spatial curved surface structure welding deformation control device uses two assembly welding devices and one shaping device to complete the assembly welding of the spatial curved surface structure in multiple steps. The assembly welding process device is cumbersome, complex, time-consuming and labor-intensive; the shaping device needs to be used in conjunction with a hydraulic press, and the overall device is relatively complex and has a high manufacturing cost.

[0009] Based on the above problems, the present application proposes a novel spatial curved surface structure assembly welding device. Summary of the invention

[0010] According to the above technical problems that the existing curved surface structure welding deformation control device cannot ensure the accuracy of welding size and the process is complicated, a spatial curved surface structure assembly welding device and method are provided. The present invention has the function of positioning and fixing the spatial curved surface structure, and can provide an effective curved surface as a reference surface for the spatial curved surface structure assembly welding process.

[0011] The technical means adopted by the present invention are as follows:

[0012] A spatial curved surface structure assembly welding device, comprising:

[0013] The space curved surface structure limiting assembly is fixedly connected to the platform frame assembly to provide an effective curved surface as a reference surface for the process of welding the space curved surface structure;

[0014] The flip clamping assembly A, the flip clamping assembly B and the flip clamping assembly C are respectively fixedly connected to the space curved surface structure limit assembly, and are used to clamp and fix the frame of the space curved surface structure to control welding deformation.

[0015] Furthermore, the spatial curved surface structure limiting assembly includes a mesh assembly, a plurality of vertical plates and a platform bottom plate, and the mesh assembly and the plurality of vertical plates are fixedly arranged on the platform bottom plate;

[0016] The mesh assembly includes a first horizontal curved rib plate arranged horizontally, a group of curved rib plates arranged horizontally, and a group of curved rib plates arranged vertically, wherein the first horizontal curved rib plate arranged horizontally, the group of curved rib plates arranged horizontally, and the group of curved rib plates arranged vertically are connected in pairs through a plug-in plate structure to form a mesh structure;

[0017] The mesh assembly further comprises an I-shaped column, wherein the I-shaped column comprises two vertically arranged curved rib plates and a horizontally arranged curved rib plate, and the I-shaped column is arranged at one side of the mesh structure.

[0018] Furthermore, one end of the curved rib plate is L-shaped, and a slot structure and a top stop are provided on the curved rib plate, and the outer side surface of the first horizontal curved rib plate is arranged to overlap with the outer edge of the platform bottom plate.

[0019] Furthermore, at least two of the curved rib plates in a group of horizontally arranged curved rib plates have L-shaped ends connected to the vertical plate to form a support structure for supporting the flipping and clamping assembly A, and at least one of the curved rib plates in a group of horizontally arranged curved rib plates has an L-shaped end connected to the vertical plate to form a support structure for supporting the flipping and clamping assembly B.

[0020] Furthermore, among a group of vertically arranged curved steel plates, at least four curved steel plates have L-shaped ends connected to the vertical plates to form a support structure for supporting the flipping and clamping assembly A; among a group of vertically arranged curved steel plates, at least one curved steel plate has an L-shaped end connected to the vertical plates to form a support structure for supporting the flipping and clamping assembly C.

[0021] Furthermore, the platform base plate is aligned with the platform frame in the length direction and then fixedly connected. A gap is reserved on the platform base plate for limiting the deformation of the welding product by means of F-type clamping. A plurality of grooves are provided on the platform base plate, and the plug-in plate structure is plugged and fixed into the grooves of the platform base plate one by one.

[0022] Furthermore, the platform frame assembly includes an outer frame, two vertical stabilizing beams are welded between two long sides of the outer frame, and two horizontal stabilizing beams are welded between two short sides of the outer frame and the two stabilizing beams.

[0023] Furthermore, the flip-and-clamp assembly A, the flip-and-clamp assembly B, and the flip-and-clamp assembly C are three assembly structures with the same structural composition but different structural dimensions;

[0024] The flipping and clamping assembly A includes a connecting seat, the lower end of which is rotatably connected to an L-shaped steel plate via a pin shaft, the upper end of which is limited by a pluggable pin shaft to the L-shaped steel plate, and one end of the L-shaped steel plate is welded and connected to a lead screw.

[0025] The present invention also provides a method for using a spatial curved surface structure assembly welding device, comprising the following steps:

[0026] The spatial curved surface structure is placed on the spatial curved surface structure limiting assembly, and supported and positioned through the mesh assembly, so that the spatial curved surface structure uses the spatial curved surface as a reference surface;

[0027] The frame of the fixed space curved surface structure is compressed by using the flip compression assembly A, the flip compression assembly B, and the flip compression assembly C;

[0028] Perform welding operations on spatial curved surface structures, and use F-type clamps to clamp the welding products in the reserved gaps to control welding deformation;

[0029] After the assembly welding is completed, the flip clamping assembly A, flip clamping assembly B, and flip clamping assembly C are opened, and the F-type clamp is removed to separate the welding product from the spatial curved surface structure assembly welding device.

[0030] Furthermore, when the spatial curved surface structure is placed on the spatial curved surface structure limiting assembly, the skin curved surface of the spatial curved surface structure corresponds to the mesh assembly formed by accurately plugging each curved rib plate through the plug-in plate structure so that the curved rib plates are vertically connected in pairs.

[0031] Compared with the prior art, the present invention has the following advantages:

[0032] The device of the present invention utilizes curved rib plates to splice into a mesh assembly positioning spatial curved surface welding structure, realizes the use of spatial curved surfaces as reference surfaces, and adopts a plug-in plate structure to ensure mesh assembly accuracy. By adjusting the corresponding positional relationship between the slot structure between each curved rib plate and the groove structure of the platform bottom plate, it is ensured that each curved rib plate is accurately assembled with the platform bottom plate, ensuring the effective implementation of the design scheme. The device takes into account the overall assembly welding, control of welding deformation and shape correction functions. At the same time, the application of this structure greatly reduces the difficulty of on-site construction personnel in assembling tooling, and effectively controls the probability of errors in assembling process tooling. In addition to the screw top clamping device, it has no other mechanical processing units, and the structure is simple, which greatly reduces the investment cost of this process tooling.

[0033] The application of this spatial curved surface structure welding process device ensures the smooth welding production of the drum-shaped side walls of the driver's cab of the FXD3 power vehicle (drum-shaped), solves the difficult problem of ensuring the streamlined external dimensions of the drum-shaped side walls of the driver's cab of this type of vehicle after welding, improves the work efficiency of front-line welding employees, reduces labor intensity, creates significant economic benefits, and achieves cost reduction and efficiency improvement. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0035] Figure 1 It is a schematic diagram of the streamlined drum-shaped side wall structure of the driver's cab in the prior art.

[0036] Figure 2 This is a physical picture of a spatial curved surface structural component in the prior art.

[0037] Figure 3 It is a shaping process equipment in the prior art.

[0038] Figure 4It is a schematic diagram of the structure of the welding device in the present invention.

[0039] Figure 5 It is a schematic diagram of the limiting assembly of the spatial curved surface structure in the present invention.

[0040] Figure 6 It is a schematic diagram of the F-type callan reserved area in the present invention.

[0041] Figure 7 It is the front view of the mesh assembly in the present invention.

[0042] Figure 8 It is a schematic diagram of the curved rib plate structure in the present invention.

[0043] Fig. 9 It is a schematic diagram of the groove structure of the platform bottom plate in the present invention.

[0044] Fig.10 It is a schematic diagram of the connection between the curved rib plate and the platform bottom plate in the present invention.

[0045] Fig.11 It is a top view of the mesh assembly in the present invention.

[0046] Fig.12 Schematic diagram of the positioning of the profiled skin on the spatial surface Figure 1 .

[0047] Fig.13 Schematic diagram of the positioning of the profiled skin on the spatial surface Figure 2 .

[0048] Fig.14 It is a schematic diagram of the platform frame assembly in the present invention.

[0049] Fig.15 It is a three-dimensional schematic diagram of the flipping and pressing assembly A in the present invention.

[0050] Fig.16 It is the front view of the flipping and pressing assembly A in the present invention.

[0051] Fig.17 It is a schematic diagram of the screw rod structure of the flipping and pressing assembly A in the present invention.

[0052] In the figure: 1. Spatial curved surface structure limit assembly; 1.1. Vertical plate A; 1.2. Vertical plate B; 1.3. Vertical plate C; 1.4. Vertical plate D; 1.5. Vertical plate E; 1.6. Vertical plate F; 1.7. Vertical plate G; 1.8. Vertical plate H; 1.9. Vertical plate I; 1.10. Vertical plate J; 1.11. Plate A; 1.12. Vertical plate K; 1.13. Channel steel A; 2. Platform frame assembly; 2.1. Channel steel assembly A; 2.2. Channel steel assembly B; 2.3. Channel steel assembly C; 2.4. Channel steel assembly D; 3. Net assembly; 3.1. Curved rib plate A; 3.2. Curved rib plate B; 3.3. Curved rib plate C; 3.4. Curved rib plate D; 3. 5. Curved rib plate E; 3.6. Curved rib plate F; 3.7. Curved rib plate G; 3.8. Curved rib plate H; 3.9. Curved rib plate I; 3.10. Curved rib plate J; 3.11. Curved rib plate K; 3.12. First horizontal curved rib plate L; 3.13. Curved rib plate M; 3.14. Curved rib plate N; 3.15. Curved rib plate O; 3.16. Curved rib plate P; 3.17. Curved rib plate Q; 3.18. Curved rib plate R; 3.19. Curved rib plate S; 3.20. Curved rib plate T; 3.21. Curved rib plate U; 4. Platform bottom plate; 5. Flip and clamp assembly A; 6. Flip and clamp assembly B; 7. Flip and clamp assembly C. DETAILED DESCRIPTION

[0053] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0054] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. 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.

[0055] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0056] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, the numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0057] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0058] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0059] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0060] like Figure 1-17As shown, the present invention provides a spatial curved surface structure assembly welding device, comprising:

[0061] The space curved surface structure limiting assembly 1 is fixedly connected to the platform frame assembly 2, and provides an effective curved surface as a reference surface for the process of the space curved surface structure assembly welding;

[0062] The flipping and clamping assembly A5, the flipping and clamping assembly B6, and the flipping and clamping assembly C7 are respectively fixedly connected to the space curved surface structure limiting assembly 1, and are used to clamp and fix the frame of the space curved surface structure to control welding deformation.

[0063] The space curved surface structure limiting assembly 1 comprises a mesh assembly 3, a plurality of vertical plates and a platform bottom plate 4, wherein the mesh assembly 3 and the plurality of vertical plates are fixedly arranged on the platform bottom plate 4;

[0064] The mesh assembly 3 includes a first horizontal curved rib plate arranged horizontally, a group of curved rib plates arranged horizontally, and a group of curved rib plates arranged vertically. The first horizontal curved rib plate arranged horizontally, the group of curved rib plates arranged horizontally, and the group of curved rib plates arranged vertically are connected in pairs through a plug-in plate structure to form a mesh structure.

[0065] The mesh assembly 3 further includes an I-shaped column, which includes two vertically arranged curved ribs and a horizontally arranged curved rib. The I-shaped column is arranged on one side of the mesh structure.

[0066] One end of the curved rib plate is L-shaped, and a slot structure and a top stop are provided on the curved rib plate. The outer side surface of the first horizontal curved rib plate is arranged to overlap with the outer edge of the platform bottom plate 4 .

[0067] Among a group of horizontally arranged curved rib plates, at least two curved rib plates have L-shaped ends connected to the vertical plates to form a support structure for the flipping and clamping assembly A5, and among a group of horizontally arranged curved rib plates, at least one curved rib plate has an L-shaped end connected to the vertical plates to form a support structure for the flipping and clamping assembly B6; among a group of vertically arranged curved steel plates, at least four curved steel plates have L-shaped ends connected to the vertical plates to form a support structure for the flipping and clamping assembly A5; among a group of vertically arranged curved steel plates, at least one curved steel plate has an L-shaped end connected to the vertical plates to form a support structure for the flipping and clamping assembly C7.

[0068] The platform base plate 4 is aligned with the platform frame assembly 2 in the length direction and then fixedly connected. A gap is reserved on the platform base plate 4 to limit the deformation of the welding product by means of F-type clamping. A plurality of grooves are provided on the platform base plate 4, and the plug-in structure is plugged and fixed into the grooves of the platform base plate 4 one by one.

[0069] The platform frame assembly 2 comprises an outer frame, two vertical stabilizing beams are welded between the two long sides of the outer frame, and two horizontal stabilizing beams are welded between the two short sides of the outer frame and the two stabilizing beams.

[0070] The flip and clamping assembly A5, flip and clamping assembly B6, and flip and clamping assembly C7 are three assembly structures with the same structural composition but different structural dimensions. The flip and clamping assembly A5 includes a connecting seat, the lower end of the connecting seat is rotatably connected to the L-shaped steel plate through a pin shaft, the upper end of the connecting seat is limited by a pluggable pin shaft to the L-shaped steel plate, and one end of the L-shaped steel plate is welded to the lead screw.

[0071] The present invention also provides a method for using a spatial curved surface structure assembly welding device, comprising the following steps:

[0072] The spatial curved surface structure is placed on the spatial curved surface structure limiting assembly 1, and supported and positioned by the mesh assembly 3, so that the spatial curved surface structure uses the spatial curved surface as a reference surface; when the spatial curved surface structure is placed on the spatial curved surface structure limiting assembly 1, ensure that each curved rib plate is accurately plugged in through the plug-in structure so that the curved rib plates are vertically connected in pairs, and each curved rib plate is accurately assembled with the groove of the platform bottom plate 4.

[0073] The frame of the fixed space curved surface structure is compressed by using the flip compression assembly A5, the flip compression assembly B6, and the flip compression assembly C7;

[0074] Perform welding operations on spatial curved surface structures, and use F-type clamps to clamp the welding products in the reserved gaps to control welding deformation;

[0075] After the assembly welding is completed, the flip clamping assembly A, flip clamping assembly B, and flip clamping assembly C are opened, and the F-type clamp is removed to separate the welding product from the spatial curved surface structure assembly welding device.

[0076] Example 1

[0077] like Figure 1-17 As shown, the present invention provides a spatial curved surface structure assembly welding device, wherein the spatial curved surface structure limiting assembly 1 is fixedly connected to the platform frame assembly 2, and the flip pressing assembly A5, the flip pressing assembly B6, and the flip pressing assembly C7 are fixedly connected to the spatial curved surface structure limiting assembly 1.

[0078] The spatial curved surface structure limiting assembly 1 includes a mesh assembly 3, 2 vertical plates A1.1, a vertical plate B1.2, 2 vertical plates C1.3, a vertical plate D1.4, 4 vertical plates E1.5, 2 vertical plates F1.6, 2 vertical plates G1.7, 2 vertical plates H1.8, a vertical plate I1.9, a vertical plate J1.10, a plate A1.11, a vertical plate K1.12, 3 channel steels A1.13, and a platform bottom plate 4, and each plug-in plate structure corresponds to the groove of the platform bottom plate 4 one by one and is plugged and fixed.

[0079] The mesh assembly 3 includes curved rib plate A3.1, curved rib plate B3.2, curved rib plate C3.3, curved rib plate D3.4, curved rib plate E3.5, curved rib plate F3.6, curved rib plate G3.7, curved rib plate H3.8, curved rib plate I3.9, curved rib plate G3.10, curved rib plate K3.11, first horizontal curved rib plate L3.12, curved rib plate M3.13, curved rib plate N3.14, curved rib plate O3.15, curved rib plate P3.16, curved rib plate Q3.17, curved rib plate R3.18, curved rib plates A~R are vertically connected in pairs through plug-in structures, curved rib plates S3.19, curved rib plate T3.20, curved rib plate U3.21, to form an I-shaped column.

[0080] The platform frame assembly 2 includes 2 channel steel assemblies A2.1 and 2 channel steel assemblies B2.2 forming the outer frame of the platform frame, and 2 channel steel assemblies C2.3 and 3 channel steel assemblies D2.4 forming beams supporting the internal stability of the platform frame.

[0081] like Figure 4 As shown, the spatial curved surface structure limiting assembly 1 is fixedly connected to the platform frame assembly 2, and is used to support and position the spatial curved surface structure. It can provide an effective curved surface as a reference surface for the spatial curved surface structure assembly welding process. The flip pressing assembly A5, the flip pressing assembly B6, and the flip pressing assembly C7 are fixedly connected to the spatial curved surface structure limiting assembly 1, and are used to press and fix the frame of the spatial curved surface structure to control welding deformation.

[0082] Space surface structure limit assembly 1, such as Figure 5 As shown, one end of the plurality of curved ribs is composed of a plurality of vertical plates that are flipped and pressed together to form a supporting structure, including: 2 vertical plates A1.1 and B1.2 connected to the leftmost end of the curved rib plate 3.13, 2 vertical plates E1.5 and F1.6 connected to the leftmost end of the curved rib plate 3.18, 2 vertical plates E1.5 and F1.6 connected to the lower end of the curved rib plate 3.1, 2 vertical plates G1.7 and 2 vertical plates H1.8 connected to the curved rib plate one by one 3.5 and the uppermost ends of the curved rib plates 3.7 are connected, and the vertical plates G1.9 and H1.10 are connected to the uppermost ends of the curved rib plates 3.10, respectively, to form supporting structures of 6 flip-and-clamp assemblies A5; 2 vertical plates C1.3 and D1.4 are connected to the leftmost ends of the curved rib plates 3.15, to form supporting structures of 1 flip-and-clamp assembly B6; the above supporting structures play the role of reinforcing the curved rib plates, supporting and connecting the flip-and-clamp assemblies.

[0083] Space surface structure limit assembly 1, such as Figure 6As shown, the platform base plate 4 is aligned with the platform frame assembly 2 in the length direction and then fixedly connected, leaving a gap to facilitate the flexible connection of the F-type calliper. During the welding process, the F-type calliper clamping method will be used to limit the deformation of the welded product here. It can be disassembled at will, and after welding, it is convenient for the welded product to be separated from the process tooling.

[0084] Mesh assembly 3, such as Figure 7 As shown in the figure, the spatial surface of the component is composed of countless curves connected, simplifying the curved surface skin into multiple crisscrossing curves. After modeling in SolidWorks 3D drawing software, the skin surface is found, and multiple curves that intersect horizontally and vertically and whose projection planes are perpendicular to each other are taken on the surface. The curved ribs of the skin are constructed based on these curves, and the curved ribs that intersect horizontally and vertically are spliced ​​into a mesh assembly. The mesh assembly 3 is the limit reference of the skin surface of the drum-shaped side wall of the driver's cab.

[0085] Mesh assembly 3, such as Figure 8 , 9 As shown in , 10, and 11, the positional relationship of each curved rib plate in the mesh assembly 3 determines the accuracy of the curved reference surface, and the plug-in plate structure is used to ensure that the curved rib plates can be accurately plugged in and vertically connected in pairs. There are many curved rib plates in the mesh assembly 3, and their shapes and sizes are very similar. Therefore, by adjusting the corresponding positional relationship between the blocking structure between each curved rib plate and the groove structure of the platform bottom plate 4, it is ensured that each curved rib plate can only be inserted into the fixed position of the groove of the platform bottom plate 4 one by one. This design ensures the effective implementation of the device plan, better controls the assembly accuracy, and at the same time reduces the difficulty of on-site construction personnel to assemble the device, and reduces the probability of errors made by the group when assembling the device.

[0086] Mesh assembly 3, such as Figure 12-13 As shown, one end of each curved rib is L-shaped and has a slot structure; each curved rib can be increased with a top stop according to the characteristics of the spatial curved surface profiled skin; after the workpiece is clamped, the outer side surface of the curved rib L3.12 is aligned with the lower side surface of the edge of the spatial curved surface profiled skin, acting as a reference surface; the above structure is used for auxiliary positioning of the spatial curved surface profiled skin.

[0087] Platform frame assembly 2, such as Fig.14 As shown, 2 channel steel assemblies A2.1 and 2 channel steel assemblies B2.2 form the outer frame of the platform frame, and 2 channel steel assemblies C2.3 and 3 channel steel assemblies D2.4 form beams that support the internal stability of the platform frame.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A spatial curved surface structure welding device, characterized in that: include: A space curved surface structure limiting assembly (1), wherein the space curved surface structure limiting assembly (1) is fixedly connected to the platform frame assembly (2) to provide an effective curved surface as a reference surface for the process of welding the space curved surface structure; The flip pressing assembly A (5), the flip pressing assembly B (6) and the flip pressing assembly C (7) are respectively fixedly connected to the space curved surface structure limiting assembly (1) and are used to press and fix the frame of the space curved surface structure to control welding deformation.

2. The spatial curved surface structure assembly welding device according to claim 1, characterized in that: The spatial curved surface structure limiting assembly (1) comprises a mesh assembly (3), a plurality of vertical plates and a platform bottom plate (4), wherein the mesh assembly (3) and the plurality of vertical plates are fixedly arranged on the platform bottom plate (4); The mesh assembly (3) comprises a first horizontal curved rib plate arranged horizontally, a group of curved rib plates arranged horizontally, and a group of curved rib plates arranged vertically, wherein the first horizontal curved rib plate arranged horizontally, the group of curved rib plates arranged horizontally, and the group of curved rib plates arranged vertically are connected in pairs through a plug-in plate structure to form a mesh structure; The mesh assembly (3) further comprises an I-shaped column, wherein the I-shaped column comprises two vertically arranged curved rib plates and a horizontally arranged curved rib plate, and the I-shaped column is arranged on one side of the mesh structure.

3. The spatial curved surface structure assembly welding device according to claim 2, characterized in that: One end of the curved rib plate is L-shaped, and a slot structure and a top stop are provided on the curved rib plate. The outer side surface of the first horizontal curved rib plate is arranged to overlap with the outer edge of the platform bottom plate (4).

4. The spatial curved surface structure assembly welding device according to claim 3 is characterized in that: At least two of the curved rib plates in a group of horizontally arranged curved rib plates have L-shaped ends connected to the vertical plate to form a support structure for supporting the flipping and clamping assembly A (5), and at least one of the curved rib plates in a group of horizontally arranged curved rib plates has an L-shaped end connected to the vertical plate to form a support structure for supporting the flipping and clamping assembly B (6).

5. The spatial curved surface structure assembly welding device according to claim 3 is characterized in that: At least four of the curved steel plates in a group of vertically arranged curved steel plates have their L-shaped ends connected to the vertical plates to form a support structure for supporting the flipping and clamping assembly A (5); at least one of the curved steel plates in a group of vertically arranged curved steel plates has its L-shaped end connected to the vertical plates to form a support structure for supporting the flipping and clamping assembly C (7).

6. The spatial curved surface structure assembly welding device according to claim 2, characterized in that: The platform base plate (4) is fixedly connected to the platform frame assembly (2) after being aligned in the length direction. A gap is reserved on the platform base plate (4) for limiting the deformation of the welding product by means of F-type clamping. A plurality of grooves are provided on the platform base plate (4). The plug-in plate structure is plugged and fixed in the grooves of the platform base plate (4) one by one.

7. The spatial curved surface structure assembly welding device according to claim 1, characterized in that: The platform frame assembly (2) comprises an outer frame, two vertical stabilizing beams are welded between the two long sides of the outer frame, and two horizontal stabilizing beams are welded between the two short sides of the outer frame and the two stabilizing beams.

8. The spatial curved surface structure assembly welding device according to claim 1, characterized in that: The flip pressing assembly A (5), the flip pressing assembly B (6), and the flip pressing assembly C (7) are three assembly structures with the same structural composition but different structural dimensions; The flipping and clamping assembly A (5) includes a connecting seat, the lower end of which is rotatably connected to an L-shaped steel plate via a pin shaft, the upper end of which is limited by a pluggable pin shaft to the L-shaped steel plate, and one end of the L-shaped steel plate is welded and connected to a lead screw.

9. A method for using a spatial curved surface structure welding device, which is implemented based on the spatial curved surface structure welding device according to any one of claims 1 to 7, characterized in that: The following steps are involved: The spatial curved surface structure is placed on the spatial curved surface structure limiting assembly (1), and supported and positioned by the mesh assembly (3), so that the spatial curved surface structure uses the spatial curved surface as a reference surface; The frame of the spatial curved surface structure is compressed and fixed by using the flipping and pressing assembly A (5), the flipping and pressing assembly B (6), and the flipping and pressing assembly C (7); Perform welding operations on spatial curved surface structures, and use F-type clamps to clamp the welding products in the reserved gaps to control welding deformation; After the assembly welding is completed, the flip clamping assembly A (5), the flip clamping assembly B (6), and the flip clamping assembly C (7) are opened, and the F-type clamp is removed to separate the welded product from the spatial curved surface structure assembly welding device.

10. The method for using the spatial curved surface structure welding device according to claim 9, characterized in that: When the spatial curved surface structure is placed on the spatial curved surface structure limiting assembly (1), the skin curved surface of the spatial curved surface structure corresponds to the mesh assembly (3) formed by accurately plugging each curved rib plate through the plug-in plate structure so that the curved rib plates are vertically connected in pairs.

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