Arc-shaped plate and manufacturing method thereof

Abstract

The invention provides an arc-shaped plate and a manufacturing method thereof, and the arc-shaped plate comprises a plate member which is arc-shaped and is provided with an inner side surface; the plate ribs are sequentially arranged on the inner side face of the plate in the length direction of the plate; and the plate connecting assembly is provided with a first side and a second side, and the first side is provided with a first groove matched with the plate rib. The plate pieces, the plate ribs and the connecting plate combining pieces serve as a unit body and are manufactured together, the streamline performance of the steel box is improved, the effect of transverse wind power of the bridge on the bridge is reduced, the wind vibration effect is reduced, and meanwhile the aesthetic design of the structure is improved.

Description

Technical Field

[0001] The present application relates to the technical field of steel bridge manufacturing, and in particular to a curved plate and a manufacturing method thereof. Background Art

[0002] Traditional steel beam structures are primarily plate-based, with panels acting as the primary load-bearing elements and longitudinal and transverse stiffeners serving as rigid reinforcements, thus forming a plate unit structure. In previous steel bridge projects, plate units were primarily flat-plate units, with curved surfaces often achieved through broken lines and the use of straight lines in plate elements. The plate ribs maintained a perpendicular relationship to the panels, and the ribs were spaced parallel and evenly spaced along the length of the bridge. Traditional flat-plate unit steel beams experience significant transverse wind forces on the bridge, resulting in strong wind vibrations and an unsightly overall steel beam structure. Summary of the Invention

[0003] In view of this, the purpose of this application is to provide a curved plate and a manufacturing method thereof, so as to solve the problem in the prior art that the lateral wind force on the bridge of the flat plate unit steel beam is large, the wind vibration effect is strong, and the overall steel beam structure is not beautiful.

[0004] In a first aspect, the present application provides a curved plate, comprising: a plate member, which is curved and has an inner side surface; Plate ribs are sequentially arranged on the inner side surface of the plate along the length direction of the plate; The plate connecting piece has a first side and a second side, wherein the first side is provided with a first groove matched with the plate rib.

[0005] In one embodiment, the connecting plate assembly includes a connecting plate a, which is arranged on the inner side surface of the plate in sequence along the width direction of the plate, and the connecting plate a has the first side and the second side arranged opposite to each other, the first side is provided with a first groove matching the plate rib, and the second side is provided with a flange plate.

[0006] In one embodiment, the plate rib and the first groove are fixed by welding; the flange plate is fixed to the center line position of the second side of the connecting plate a along the length direction.

[0007] In a second aspect, an embodiment of the present invention provides a method for manufacturing a curved plate, comprising: providing a plate member; Mark the horizontal baseline, vertical baseline, plate rib position line, plate joint position line and arc bending guide line on the plate; Pressing the plate into an arc-shaped plate along the arc-shaped bending guide line; Weld the plate ribs according to the plate rib position line; Assemble the panel parts and weld them.

[0008] In one embodiment, the plate is a rectangular parallelepiped structure, the plate is a steel plate, the plate surface flatness of the plate is ≤1 mm / m, and the plate edge straightness of the plate is ≤1 mm / m; and / or The four sides of the plate are first milled straight, and then grooves are processed on the four sides of the plate.

[0009] In one embodiment, a high-precision laser marking machine is used to mark the horizontal baseline, the vertical baseline, the plate rib position line, the plate joint position line and the arc bending guide line on the plate; and / or; The longitudinal base line is located at the center of the panel along its length; and / or Along the width direction of the plate, the horizontal baseline is located at the center of the plate or to one side of the center of the plate; and / or A plurality of said plate rib position lines are sequentially arranged at intervals along the length direction of the plate; and / or A plurality of said plate joining position lines are sequentially arranged at intervals along the width direction of the plate; and / or Along the length direction of the plate, the arc-shaped bending guide lines are arranged in sequence at equal intervals, and the distance between adjacent arc-shaped bending guide lines is less than 100 mm.

[0010] In one embodiment, a press is used to press a plate into an arc-shaped plate along an arc-shaped bending guide line. The press includes an upper die and a lower die. The upper die adopts an R150 die head. The upper die and the lower die cooperate to complete the pressing. During the pressing process, an arc inspection template is used to track and inspect the arc size after each pressing. If the arc size does not meet the requirements, the press is used to re-press until the arc size meets the requirements.

[0011] In one embodiment, when the curved plate is pressed, a reverse deformation amount is preset; and / or Extend the skin line on one or both sides of the rib into the curved plate to form a rib position line, with the skin of the rib touching the rib position line and the thickness surface of the rib touching the inner side of the curved plate; and / or After welding, a positioning inspection template is used to check the assembly effect of the plate ribs. The positioning inspection template includes a first side and a second side that are relatively arranged. The first side is provided with a second groove that matches the cross-section of the plate rib. The opening of the second groove is located on the first side, and the second groove extends along the side toward the second side. The number of the second grooves is the same as the number of the plate ribs. One side of the second groove is the plate rib reference edge, and the first side is the inner arc reference edge. The inner arc reference edge matches the inner curved surface of the arc-shaped plate; at least one oblong hand hole is provided on the side close to the second side, and a weight reduction hole is also provided on the positioning inspection template between the second grooves.

[0012] In one embodiment, the second groove of the positioning inspection template is matched with the corresponding plate rib, and the inner arc reference edge is matched with the inner curved surface of the arc-shaped plate. Then, multiple plate rib reference edges are simultaneously pressed against the plate skin of the plate rib to check the degree of fit between each plate rib surface and the plate rib reference edge. If they are not perfectly fitted, they are adjusted to be perfectly fitted and then spot welded. After the plate ribs are spot welded, the plate rib assembly effect of the arc plate along the length direction is checked by moving the positioning inspection template. The focus should be on controlling the position of the plate rib root, the plate rib angle and the spacing between the free ends of the plate rib. The inspection process must always ensure that the inner arc reference edge and the plate rib reference edge are perfectly fitted to complete the plate rib welding operation.

[0013] In one embodiment, assembling the connecting plate assembly includes welding the connecting plate a to the flange plate, and then connecting the plate rib to the first groove by single-side welding.

[0014] This application manufactures the plates, plate ribs and plate joints as a unit body, which increases the streamline of the steel box, reduces the effect of the lateral wind force on the bridge, reduces the wind vibration effect, and at the same time improves the aesthetic design of the structure itself.

[0015] In order to ensure the size and accuracy of the circumferential groove of the curved plate, the present application adopts the method of cutting the plate with the net size + process quantity when cutting the plate, thereby changing the post-trimming process of the plate unit production; when marking the plate, a high-precision laser marking machine is used to replace manual marking to improve the marking accuracy; the marking type is based on the horizontal baseline, vertical baseline, plate rib position line and plate joint position line, and an arc-shaped bending guide line is added to assist in the profiling and profiling position inspection of the curved plate; in order to improve the assembly accuracy of the plate rib, the original plate rib position line is marked according to the center line of the plate rib thickness, and adjusted to the plate skin line on one side or both sides of the plate rib, thereby reducing the deviation of the plate rib assembly alignment and realizing one-side reference control or two-way control; the traditional plate unit can measure the vertical relationship between the plate rib and the panel by a protractor, and the present application adopts a positioning inspection template to control the plate rib angle for the curved plate design, so as to realize the centripetal (center of the circle) assembly of each plate rib; the flatness of the traditional plate unit panel can be detected and controlled by a long plate ruler, and the present invention adopts an internal and external double-sided template to assist in checking the curvature effect for the curved surface design, providing an intuitive basis for the correction of the plate unit. This application mainly realizes the manufacturing precision control of multi-curvature combined arc plate units from the aspects of curvature control, plate rib spacing and angle, and welding deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings of the embodiments. Obviously, the drawings described below only relate to some embodiments of the present application and are not intended to limit the present application. Figure 1 This is a schematic diagram of the curved plate structure of an embodiment of the present application; Figure 2 This is a schematic diagram of the line drawing of the curved plate according to an embodiment of the present application; Figure 3 This is a side view of the curved plate according to an embodiment of the present application; Figure 4 A side view of another curved plate according to an embodiment of the present application; Figure 5 This is a structural diagram of the positioning inspection template of the embodiment of the present application. DETAILED DESCRIPTION

[0017] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0018] In the description of the present application, it should be understood that the terms "length", "width", "thickness", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a unique orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0019] In the application, the word "exemplary" is used to mean "serving as an example, illustration, or description." Any embodiment described in this application as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is given to enable any person skilled in the art to implement and use the present application. In the following description, details are listed for the purpose of explanation. It should be understood that one of ordinary skill in the art can recognize that the present application can be implemented without using these specific details. In other instances, known structures and processes are not described in detail to avoid obscuring the description of the present application with unnecessary detail. Therefore, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles disclosed herein.

[0020] Traditional steel bridge members or steel tower segments are mostly quadrilateral or polygonal in design. Members or segments are fabricated in the factory to the designed length, and then lengthened, assembled, and welded at the bridge site. Steel structure manufacturing requires extremely high precision, with all monitoring points measured in millimeters. Panel or rib misalignment at member or segment interfaces is required to be ≤2mm. For polygonal box-shaped structural members composed of multiple straight edges, assembly precision can be achieved by controlling rib spacing, verticality, leveling, and interface length, width, and diagonal dimensions during unit fabrication and segment assembly. This helps determine whether the dimensions meet the matching relationship between interfaces. For curved panels, especially those with multiple curvatures, simple leveling and straightedge measurement cannot determine the accuracy of the curved area due to the free variation of their curvature. Furthermore, for segment interfaces, no characteristic dimension can represent the accuracy of the structural member interface dimensions and their matching relationship with adjacent segments. Traditional methods such as marking, assembly, and rib verticality control can only achieve the production of flat plate units. However, they are not very effective for curved plates, especially those with multiple curvatures.

[0021] See Figure 1 , an embodiment of the present application provides a curved plate, comprising: The plate is arc-shaped and has an inner side surface; Plate ribs are sequentially arranged on the inner side surface of the plate along the length direction of the plate; The plate connecting piece has a first side and a second side, wherein the first side is provided with a first groove matched with the plate rib.

[0022] It's understandable that due to the curved shape of the panel, there's an angular relationship between the ribs, and the rib spacing decreases from the base to the free end, with the reduction proportional to the radius of the curved panel. The selection range and form of the connecting plate a must be determined based on the curvature and the installation conditions of the connecting plate a (the connecting plate assembly).

[0023] The curved plate of the present application is a unit. Specifically, the present application manufactures the plate, plate ribs and plate joint parts together as a unit body, which increases the streamline of the steel box, reduces the effect of the lateral wind force on the bridge, reduces the wind vibration effect, and at the same time improves the aesthetic design of the structure itself.

[0024] In some embodiments, the plate rib and the first groove are fixed by welding.

[0025] Furthermore, the plate rib and the first groove are connected by single-side welding.

[0026] In some embodiments, the connecting plate assembly includes a connecting plate a, which is arranged on the inner side surface of the plate in sequence along the width direction of the plate. The connecting plate a has the first side and the second side arranged opposite to each other, the first side is provided with a first groove matching the plate rib, and the second side is provided with a flange plate.

[0027] Furthermore, the flange plate is fixed to the center line position of the second side of the connecting plate a along the length direction.

[0028] See Figure 1-5 , an embodiment of the present application also provides a method for manufacturing a curved plate, which can be used to manufacture the curved plate of the aforementioned embodiment.

[0029] See Figure 2 In some embodiments, the manufacturing method includes: S01, provide panels; S02. Draw the horizontal baseline, vertical baseline, plate rib position line, plate joint position line and arc bending guide line on the plate; S03, pressing the plate into a curved plate along the curved bending guide line; S04. Weld the plate ribs according to the plate rib position lines; S05. Assemble the connecting plate parts and weld them.

[0030] In order to ensure the size and accuracy of the circumferential groove of the curved plate, the present application adopts the method of cutting the plate with the net size + process quantity when cutting the plate, thereby changing the post-trimming process of the plate unit production; when marking the plate, a high-precision laser marking machine is used to replace manual marking to improve the marking accuracy; the marking type is based on the horizontal baseline, vertical baseline, plate rib position line and plate joint position line, and an arc bending guide line is added to assist in the profiling and profiling position inspection of the curved plate; in order to improve the assembly accuracy of the plate rib, the original plate rib position line is marked according to the center line of the plate rib thickness, and adjusted to the plate skin line on one side or both sides of the plate rib, thereby reducing the deviation of the plate rib assembly alignment and realizing one-side reference control or two-way control; the traditional plate unit can measure the vertical relationship between the plate rib and the panel by a protractor, and the present application adopts a positioning inspection template for the curved plate design to control the plate rib angle and realize the centripetal (center of the circle) assembly of each plate rib; the flatness of the traditional plate unit panel can be detected and controlled by a long plate ruler, and the present invention adopts an internal and external double-sided template for the arc surface design to assist in checking the curvature effect, providing an intuitive basis for the correction of the plate unit. This application mainly realizes the manufacturing precision control of multi-curvature combined arc plate units from the aspects of curvature control, plate rib spacing and angle, and welding deformation.

[0031] The arc-shaped plate of the present application is a unit. The present application manufactures the plate, plate ribs and plate joint parts together as a unit body. The present application assembles the plate ribs for the first time after the plate is bent.

[0032] In the S01: In some embodiments, the plate is a rectangular parallelepiped structure.

[0033] Furthermore, the plate is a steel plate.

[0034] In some embodiments, the flatness of the plate surface is ≤1 mm / m.

[0035] In some embodiments, the straightness of the plate edge is ≤1 mm / m.

[0036] In some embodiments, the plate is first milled straight around its periphery, and then grooves are machined around the periphery of the plate.

[0037] It can be understood that the plate is milled straight all around to ensure that the straightness of all sides of the plate is ≤1mm / m. At a distance of 50mm from the edge of the plate, the groove processing alignment line is drawn to accurately locate the position of the processing head or cutting nozzle. According to the processing groove size, such as 45° single V groove or 40° single V groove, the corresponding groove size is processed by adjusting the cutting head angle, thereby realizing groove processing accuracy control and avoiding grooves of different depths and sizes that affect welding quality.

[0038] In the S02: See Figure 2 In some embodiments, a high-precision laser marking machine is used to mark horizontal baselines, vertical baselines, plate rib position lines, plate joint position lines and arc bending guide lines on the plate.

[0039] It can be understood that the horizontal baseline and the longitudinal baseline will be preserved as the benchmark of the unit element until the overall assembly of the steel box girder segment. The longitudinal and transverse control of the plate unit manufacturing process is based on the horizontal baseline and the longitudinal baseline. When the steel box girder segment is assembled, the spacing between the horizontal and longitudinal baselines of adjacent plates is used to control the assembly position of the plate elements, assist in the positioning of the plate elements, and realize the assembly dimensional accuracy control of the steel box girder at the same time.

[0040] In some embodiments, the longitudinal base line is located at the center of the panel along the length direction of the panel.

[0041] In some embodiments, along the width direction of the plate, the transverse base line is located at the center of the plate or at one side of the center of the plate.

[0042] In some embodiments, a plurality of the plate rib position lines are arranged in sequence and spaced apart along the length direction of the plate.

[0043] In some embodiments, a plurality of the plate connecting position lines are sequentially spaced apart along the width direction of the plate.

[0044] In some embodiments, the arc-shaped bending guide lines are arranged at equal intervals along the length of the plate, and the distance between adjacent arc-shaped bending guide lines is less than 100 mm, for example, 10 mm, 20 mm, 30 mm, 40 mm, 50 mm, 60 mm, 70 mm, 80 mm, 90 mm, 99 mm, etc. This distance range is conducive to increasing the indentation density.

[0045] It can be understood that the plate is first bent through the arc bending guide line and then the plate rib is installed through the plate rib position line.

[0046] In said S03: See Figure 1 、 Figure 3 and Figure 4 In some embodiments, a press is used to press the plate into an arc-shaped plate along an arc-shaped bending guide line.

[0047] Furthermore, the press includes an upper die and a lower die, the upper die adopts an R150 die head, and the upper die and the lower die cooperate to complete the pressing.

[0048] It can be understood that during the pressing process, the indentation density is increased by encrypting the arc guide lines, and the pressure areas of the plate are cross-propelled to avoid hard bends or obvious straight sections on the plate surface during the bending process.

[0049] Furthermore, during the pressing process, a positioning inspection template is used to track and inspect the arc size after each pressing. If the arc size does not meet the requirements, the press is used to re-press until the arc size meets the requirements.

[0050] It can be understood that each embossing is the arc formed by each plate pressed down by the press.

[0051] It can be understood that the inspection reference edge of the arc inspection template is designed according to the radius size of the arc plate to be inspected. During the inspection process, the inspection reference edge is placed close to the inner skin of the arc plate to check the gap between the template reference edge and the inner skin of the arc plate. When the gap is ≤1mm, it can be determined that the arc pressing size at that location meets the requirements. When the gap is greater than 1mm, it can be determined to be unqualified. During the inspection process, the template position is moved and the arc size of any position of the arc plate is checked multiple times. If it does not meet the requirements, re-pressing is performed. Generally, each position is pressed at least twice.

[0052] In some embodiments, when the curved plate is pressed, a reverse deformation amount is preset.

[0053] It can be understood that the amount of reverse deformation is set according to the chord length of the arc plate + 1mm~2mm, and the production process is adjusted in time according to the actual measurement situation.

[0054] It can be understood that after the arc plate is press-formed, the plate rib assembly and welding operations will continue. At the same time, flame correction is required to reduce the influence of welding deformation on the dimensional accuracy of the arc plate unit. Therefore, when the arc plate is pressed, it is necessary to preset the reverse deformation amount according to the arc radius of the pressed arc plate and the thickness of the plate. Since the plate ribs are evenly arranged on the inner side of the arc plate, the arc plate will tend to retract due to the heat on the inner side during welding, that is, the arc opening will shrink. Therefore, during the arc plate pressing process, the arc plate opening size is appropriately relaxed to compensate for the steel plate press rebound amount and welding shrinkage amount. Here, the reverse deformation amount should be remeasured and tracked during the production process and adjusted when necessary.

[0055] It can also be understood that during the arc-shaped plate pressing process, the arc-pressing and pushing operation of the arc-shaped plate is completed by the CNC front pushing shaft and CNC rear stop frame of the press, realizing the forward pushing and backward feeding (CNC) operation, ensuring that each line is accurate, ensuring that the inner and outer arcs of the arc-shaped plate are smooth, and using a non-indentation lower die to press to ensure that there is no obvious indentation on the outer arc.

[0056] In said S04: See Figure 5 In some embodiments, the plate skin line on one side or both sides of the plate rib is extended into the curved plate to form a plate rib position line.

[0057] It can be understood that rib position lines are drawn along the length direction of the arc-shaped plate, and each rib position line is connected to the plate skin lines on one side or both sides of the corresponding rib.

[0058] Furthermore, the plate skin of the plate rib is close to the plate rib position line, and the plate thickness surface of the plate rib is close to the inner side surface of the curved plate member.

[0059] It can be understood that the plate skin is the thick surface of the plate rib.

[0060] Furthermore, after welding, a positioning inspection template is used to check the assembly effect of the plate ribs.

[0061] It can be understood that spot welding is used for welding, and the positions of plate rib ports and connecting plate parts are avoided during spot welding, because patch welding is required later.

[0062] Furthermore, the positioning inspection template includes a first side and a second side arranged opposite to each other, the first side is provided with a second groove that matches the cross-section of the plate rib, the opening of the second groove is located on the first side, and the second groove extends along one side toward the second side. The number of second grooves is the same as the number of plate ribs, one side of the second groove is the plate rib reference edge, the first side is the inner arc reference edge and is arc-shaped, and the inner arc reference edge matches the inner curved surface of the arc plate; at least one elongated hand hole is provided on the side close to the second side, and weight reduction holes are also provided on the positioning inspection template between the second grooves.

[0063] Furthermore, the inclination of each plate rib reference edge is different, and the other side of the second groove is inclined away from the side corresponding to the plate rib reference edge so as to fit with the corresponding plate rib.

[0064] The inclination of each plate rib reference edge in the present application is different, the purpose of which is to facilitate the fit with the corresponding plate rib, and to judge whether the plate rib assembly angle is in place by whether there is a gap between the plate rib reference edge and the plate rib; the other side of the second groove is inclined away from the side corresponding to the plate rib reference edge, the purpose of which is to facilitate the placement of the positioning inspection template in place (to facilitate the fit with the corresponding plate rib), and also reduce the net area of ​​the positioning inspection template, which can reduce the weight of the positioning inspection template and facilitate the holding operation during use.

[0065] The arc-shaped plate of the present application is a multi-curvature arc-shaped plate, and its curvature can be changed freely; the plate rib is a plate-shaped structure.

[0066] In some embodiments, the inclination direction of each rib is different.

[0067] Exemplarily, the curved plate is a circular arc plate.

[0068] It can be understood that the weight-reducing holes can be of regular shape or irregular shape.

[0069] Furthermore, the second groove of the positioning inspection template is matched with the corresponding plate rib, and the inner arc reference edge is matched with the inner curved surface of the arc plate. Then, multiple plate rib reference edges are pressed against the plate skin of the plate rib at the same time, and the degree of fit between each plate rib surface and the plate rib reference edge is checked. If it is not perfectly fitted, adjust it to be perfectly fitted and then perform spot welding to fix it. After the plate rib is spot welded, the plate rib assembly effect of the arc plate along the length direction is checked by moving the positioning inspection template. The focus should be on controlling the position of the plate rib root, the plate rib angle and the spacing between the free ends of the plate rib. The inspection process must always ensure that the inner arc reference edge and the plate rib reference edge are perfectly fitted to complete the plate rib welding operation.

[0070] It can be understood that the plate rib surface is the surface on both sides of the plate rib width direction.

[0071] It can be understood that the focus should be on controlling the root position of the plate rib, that is, the outer skin line on both sides of the plate rib is accurately aligned with the plate rib position line, where the root position of the plate rib is the position where the outer skin line of the plate rib contacts the inner arc surface of the arc plate, and welding is welding on both sides of the plate rib thickness surface.

[0072] It can also be understood that the rib angle and the distance between the free ends of the ribs are formed because the ribs are welded to the inner side of the curved panel and the ribs are arranged centripetally, so a natural angle is formed between the ribs, namely the rib angle. At the free end of the ribs, that is, the width side that is not welded, there will be a size between the ribs, namely the distance between the free ends of the ribs.

[0073] It can be understood that the centripetal (center of the arc plate) arrangement of the plate ribs can be achieved with the help of the positioning inspection template to assist in control.

[0074] In said S05: In some embodiments, the connecting plate assembly includes a connecting plate a, which is arranged on the inner side surface of the plate in sequence along the width direction of the plate, and the connecting plate a has a first side and a second side arranged opposite to each other, and the first side is provided with a first groove matching the plate rib; the second side is provided with a flange plate, and the flange plate is fixed to the center line position of the second side of the connecting plate a along the length direction.

[0075] Furthermore, the assembly of the connecting plate assembly includes connecting the plate rib and the first groove by single-side welding; and directly welding the connecting plate a and the flange plate.

[0076] It can be understood that the longitudinal center line of the connecting plate a close to the flange plate is aligned with the longitudinal center line of the flange plate, and the thickness center line of the connecting plate a is aligned with the width center line of the flange plate.

[0077] It can be understood that the focus is on controlling the verticality of the connecting plate a and the flange plate. During the assembly process, a square is used to check whether the angle between the connecting plate a and the flange plate is vertical. If it is not vertical, fine-tune it.

[0078] In some embodiments, welding the plate assembly includes welding the flange plate to the second side surface.

[0079] It can be understood that the position of the positioning and assembly of the connecting plate assembly and the verticality of the connecting plate and the arc plate are checked to complete the connecting plate welding.

[0080] It can be understood that the flame correction method is used to correct the welding deformation of the curved plate unit. Specifically, the curved plate is locally heated through the fire adjustment process, and then the local plate surface undergoes slight changes due to shrinkage to adjust the local deformation. The curvature of the curved plate, especially the position of the two ends, the position and angle of the plate ribs are checked, and special attention is paid to the end and the plate connection position.

[0081] The basic concepts have been described above. It will be apparent to those skilled in the art that the detailed disclosure above is merely illustrative and does not limit the present application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and amendments to the present application. Such modifications, improvements, and amendments are suggested in the present application and remain within the spirit and scope of the exemplary embodiments of the present application.

[0082] At the same time, this application uses specific terms to describe the embodiments of this application. For example, "one embodiment," "an embodiment," and / or "some embodiments" refer to a certain feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that "one embodiment," "an embodiment," or "an alternative embodiment" mentioned twice or multiple times in different locations in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application may be appropriately combined.

Claims

1. A curved plate, characterized in that: include: The plate is arc-shaped and has an inner side surface; Plate ribs are sequentially arranged on the inner side surface of the plate along the length direction of the plate; The plate connecting piece has a first side and a second side, wherein the first side is provided with a first groove matched with the plate rib.

2. The curved plate according to claim 1, characterized in that: The connecting plate assembly includes a connecting plate a, which is sequentially arranged on the inner side surface of the plate along the width direction of the plate. The connecting plate a has a first side and a second side that are arranged opposite to each other. The first side is provided with a first groove that matches the plate rib, and the second side is provided with a flange plate.

3. The curved plate according to claim 2, characterized in that: The plate rib and the first groove are fixed by welding; the flange plate is fixed to the center line position of the second side of the connecting plate a along the length direction.

4. A method for manufacturing a curved plate, characterized in that: include: Provide panels; Mark the horizontal baseline, vertical baseline, plate rib position line, plate joint position line and arc bending guide line on the plate; Pressing the plate into an arc-shaped plate along the arc-shaped bending guide line; Weld the plate ribs according to the plate rib position line; Assemble the panel parts and weld them.

5. The method for manufacturing a curved plate according to claim 4, characterized in that: The plate is a rectangular parallelepiped structure, the plate is a steel plate, the plate surface flatness is ≤1mm / m, and the plate edge straightness is ≤1mm / m; and / or The four sides of the plate are first milled straight, and then grooves are processed on the four sides of the plate.

6. The method for manufacturing a curved plate according to claim 4, characterized in that: Use a high-precision laser marking machine to mark the horizontal baseline, vertical baseline, plate rib position line, plate joint position line and arc bending guide line on the plate; and / or; The longitudinal base line is located at the center of the panel along its length; and / or Along the width direction of the plate, the transverse baseline is located at the center of the plate or to one side of the center of the plate; and / or A plurality of said plate rib position lines are sequentially arranged at intervals along the length direction of the plate; and / or A plurality of said plate joining position lines are sequentially arranged at intervals along the width direction of the plate; and / or Along the length direction of the plate, the arc-shaped bending guide lines are arranged in sequence at equal intervals, and the distance between adjacent arc-shaped bending guide lines is less than 100 mm.

7. The method for manufacturing a curved plate according to claim 4, wherein: A press is used to press the plate into an arc-shaped plate along the arc-shaped bending guide line. The press includes an upper die and a lower die. The upper die adopts an R150 die head. The upper and lower dies cooperate to complete the pressing. During the pressing process, an arc inspection template is used to track and inspect the arc size after each pressing. If the arc size does not meet the requirements, the press is used to re-press until the arc size meets the requirements.

8. The method for manufacturing a curved plate according to claim 7, characterized in that: When pressing curved plates, preset the amount of reverse deformation; and / or Extend the skin line on one or both sides of the rib into the curved plate to form a rib position line, with the skin of the rib touching the rib position line and the thickness surface of the rib touching the inner side of the curved plate; and / or After welding, a positioning inspection template is used to check the assembly effect of the plate ribs. The positioning inspection template includes a first side and a second side that are relatively arranged. The first side is provided with a second groove that matches the cross-section of the plate rib. The opening of the second groove is located on the first side, and the second groove extends along the side toward the second side. The number of the second grooves is the same as the number of the plate ribs. One side of the second groove is the plate rib reference edge, and the first side is the inner arc reference edge. The inner arc reference edge matches the inner curved surface of the arc-shaped plate; at least one oblong hand hole is provided on the side close to the second side, and a weight reduction hole is also provided on the positioning inspection template between the second grooves.

9. The method for manufacturing a curved plate according to claim 8, characterized in that: Match the second groove of the positioning inspection template with the corresponding plate rib, and at the same time, match the inner arc reference edge with the inner curved surface of the arc-shaped plate. Then, simultaneously press multiple plate rib reference edges against the plate skin of the plate rib, and check the degree of fit between each plate rib surface and the plate rib reference edge. If they are not perfectly fitted, adjust them to be perfectly fitted and then perform spot welding to fix them. After the plate ribs are spot welded, check the plate rib assembly effect of the arc plate along the length direction by moving the positioning inspection template. Focus on controlling the position of the plate rib root, the plate rib angle and the spacing between the free ends of the plate rib. During the inspection process, it is necessary to always ensure that the inner arc reference edge and the plate rib reference edge are perfectly fitted to complete the plate rib welding operation.

10. The method for manufacturing a curved plate according to claim 4, characterized in that: Assembling the connecting plate assembly includes welding the connecting plate a to the flange plate, and then connecting the plate rib to the first groove by single-side welding.

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