Circular seam vertical welding equipment and welding method for cylinder section

Abstract

The invention relates to the technical field of girth welding, in particular to girth vertical welding equipment and method for a cylinder section, and the welding equipment comprises a machining platform, a fixing assembly and a machining assembly. A first avoiding structure is arranged on the machining platform in the vertical direction in a penetrating mode. The fixing assembly is used for fixing the two to-be-welded cylinder sections and making the two to-be-welded cylinder sections vertically arranged in the first avoiding structure, and the fixing assembly and / or the machining platform are / is provided with a height adjusting device so that the height of a circular seam formed by butt joint of the two cylinder sections can be adjusted in the vertical direction. The machining assembly conducts laser welding around the circular seam based on the machining platform. The problem that centering is difficult due to the influence of self weight during horizontal welding of the circular seam of the cylinder section is solved, the cylinder section is vertically placed and welded, the alignment difficulty and the machining difficulty of the circular seam are reduced, and the deformation quantity of the cylinder section is controlled. And cylinder sections with different lengths can be flexibly welded through height adjustment, so that the welding quality and the production efficiency are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of circumferential seam welding, and particularly to a vertical circumferential seam welding device and a welding method for cylindrical sections. Background Art

[0002] Long cylindrical section components such as reactor vessel cylinders and pipe prefabrications are widely used in fields such as aerospace, nuclear power, and rail transit. Circumferential seam welding is a commonly used welding method for connecting cylindrical section components. Specifically, it refers to welding along the circumferential direction of two cylindrical components to form a continuous weld seam at the connection of the two cylindrical sections, obtaining a complete cylindrical structure.

[0003] Existing long cylindrical section welding equipment adopts a horizontal structure, placing the cylindrical sections horizontally for butt joint. Affected by the self-weight of the cylindrical sections, it is difficult to align the weld joint, resulting in poor welding quality. For cylindrical sections of different lengths, it is necessary to frequently switch tooling, affecting production efficiency. Summary of the Invention

[0004] The vertical circumferential seam welding device and welding method for cylindrical sections provided by the embodiments of the present invention at least solve the problems of poor quality during circumferential seam welding of cylindrical section components and the need for frequent tooling switching.

[0005] In a first aspect, an embodiment of the present invention provides a vertical circumferential seam welding device for cylindrical sections, including a processing platform, a fixing component, and a processing component; The processing platform is provided with a first avoidance structure penetrating in the vertical direction; The fixing component is used to fix two cylindrical sections to be welded, and make the two cylindrical sections to be welded vertically arranged within the first avoidance structure. The fixing component and / or the processing platform is provided with a height adjustment device to make the height of the circumferential seam where the two cylindrical sections are butted adjustable in the vertical direction; The processing component is based on the processing platform and performs laser welding around the circumferential seam.

[0006] In the vertical circumferential seam welding device for cylindrical sections provided by the embodiments of the present invention, the fixing component includes a first fixing member and a second fixing member; The first fixing member is used to fix the first cylindrical section, and the first fixing member is configured to move the first cylindrical section into the first avoidance structure during welding; The second fixing member is used to fix the second cylindrical section. The second cylindrical section is coaxially arranged with the first cylindrical section and connects to the top of the first cylindrical section; the second fixing member is provided as a lifting structure.

[0007] In the vertical circumferential seam welding device for cylindrical sections provided by the embodiments of the present invention, the first fixing member includes a mounting seat, a column, an outer mounting platform, and a heightening platform; There are at least three upright columns, all of which are vertically arranged. One end of each upright column is fixed on the mounting base, and the other end of each upright column is fixed to the same mounting ring; the upright columns are arranged in a cylindrical structure; The outer mounting platform is sleeved on the outer periphery of the cylindrical structure and is slidably connected to the outer facade of the upright column; The heightening platform is sleeved on the outer periphery of the cylindrical structure and is fixed to the top surface of the outer mounting platform.

[0008] For the circumferential seam vertical welding equipment of the cylinder section provided by the embodiment of the present invention, the first fixing member further includes an inner mounting platform and a weld support member; The inner mounting platform is arranged on the inner wall of the cylindrical structure and is slidably connected to the inner facade of the upright column; the inner mounting platform and the outer mounting platform are independently controlled; One end of the weld support member is connected to the top surface of the inner mounting platform, and the size of the other end of the weld support member in the radial direction of the mounting ring is adjustable.

[0009] For the circumferential seam vertical welding equipment of the cylinder section provided by the embodiment of the present invention, the weld support member includes a first support frame, a hinge and a first support plate; The diameter of the first support frame is the same as that of the inner mounting platform; The hinge is used to be driven by a first driving member to enable the first support plate to expand outward or contract inward along the radial direction of the mounting ring.

[0010] For the circumferential seam vertical welding equipment of the cylinder section provided by the embodiment of the present invention, the weld support member includes a second support frame, a crank-slider mechanism and a second support plate; The second support frame is arranged in an umbrella shape; The crank-slider mechanism is used to push the second support plate to expand outward or contract inward along the radial direction of the mounting ring.

[0011] For the circumferential seam vertical welding equipment of the cylinder section provided by the embodiment of the present invention, the processing platform includes a bearing platform, support columns and a guardrail; The bearing platform is horizontally arranged, and a rotary driving member is arranged on the top surface of the bearing platform around the outer periphery of the first avoidance structure. The rotary driving member is used to drive the processing component to perform a reciprocating rotary motion along the circumferential direction; The support columns are supported between the bearing platform and the ground, and a second avoidance structure is arranged between at least two of the support columns. The second avoidance structure is used to provide an avoidance for the fixing component; The guardrail is arranged on the top surface of the bearing platform and is located outside the first avoidance structure and the processing component.

[0012] The circumferential seam vertical welding equipment for cylinder segments provided by the embodiment of the present invention further includes a horizontal movement component, which is located within the second avoidance structure and is used to drive the first fixing member of the fixing component to move in the horizontal direction; The height difference between the horizontal movement component and the bearing platform in the vertical direction is greater than the extension length of the cylinder segment.

[0013] The processing component of the circumferential seam vertical welding equipment for cylinder segments provided by the embodiment of the present invention includes a welding main machine and a cutting main machine; the cutting main machine and the welding main machine are arranged along the circumferential direction outside the first avoidance structure; The execution end of the welding main machine is arranged towards the center of the first avoidance structure, and the execution end of the welding main machine is driven to move in the vertical direction and / or in the radial direction of the cross-section of the first avoidance structure; The execution end of the cutting main machine is arranged towards the center of the first avoidance structure, and the execution end of the cutting main machine is driven to move in the vertical direction and / or in the radial direction of the cross-section of the first avoidance structure.

[0014] In a second aspect, the embodiment of the present invention also provides a circumferential seam vertical welding method for cylinder segments, which is implemented based on the circumferential seam vertical welding equipment for cylinder segments described in any of the above embodiments, and the method includes: Install two cylinder segments to be welded on the fixing component; Adjust the fixing component so that the circumferential seam position of the cylinder segment corresponds to the processing component; The processing component performs laser welding on the circumferential seam.

[0015] The circumferential seam vertical welding equipment and welding method for cylinder segments provided by the embodiment of the present invention solve the problem that it is difficult to center the circumferential seam of the cylinder segment during horizontal welding due to its own weight. The cylinder segments are placed vertically and welded, reducing the difficulty of aligning the circumferential seam and the processing difficulty, and controlling the deformation amount of the cylinder segment. Through height adjustment, cylinder segments of different lengths can be flexibly processed. Without frequently switching fixtures, it can also adapt to the continuous welding operation of multiple cylinder segments, greatly improving the welding quality and production efficiency, and having high flexibility and a wider application range. Description of the Drawings

[0016] The drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings: Figure 1 It is a schematic structural diagram of a circumferential seam vertical welding equipment for cylinder segments in Embodiment 1 of the present invention.

[0017] Figure 2 It is a side view of a circumferential seam vertical welding device for a cylinder section in Embodiment 1 of the present invention.

[0018] Figure 3 It is a top view of a circumferential seam vertical welding device for a cylinder section in Embodiment 1 of the present invention.

[0019] Figure 4 It is a schematic structural diagram of a processing platform in Embodiment 1 of the present invention.

[0020] Figure 5 It is a schematic structural diagram of a processing component in Embodiment 1 of the present invention.

[0021] Figure 6 It is a schematic structural diagram of a horizontal moving component and a first fixing member in Embodiment 1 of the present invention.

[0022] Figure 7 It is a schematic structural diagram of a heightening platform in Embodiment 1 of the present invention.

[0023] Figure 8 It is a side view of a weld support member in one implementation manner in Embodiment 1 of the present invention.

[0024] Figure 9 is Figure 8 The top view of the shown weld support member.

[0025] Figure 10 It is a side view of a weld support member in another implementation manner in Embodiment 1 of the present invention.

[0026] Figure 11 is Figure 10 The top view of the shown weld support member.

[0027] Figure 12 is Figure 10 The schematic structural diagram of the shown weld support member.

[0028] Figure 13 It is a schematic diagram of a circumferential seam vertical welding method for a cylinder section in Embodiment 2 of the present invention.

[0029] Among them, the above-mentioned drawings include the following reference numerals: 1. Processing platform; 11. Base; 1101. Rotary drive; 12. Support column; 13. Guardrail; 2. Fixing assembly; 21. First fixing member; 2101. Mounting base; 2102. Column; 2103. Outer mounting table; 2104. Raising platform; 2105. Mounting ring; 2106. Inner mounting table; 2107. Outer drive; 2108. Inner drive; 22. Second fixing member; 23. Weld support member; 2301. First support frame; 2302. Hinge; 2303. First support plate; 2304. First drive; 2305. Second support frame; 2306. Crank-slider mechanism; 2307. Second support plate; 3. Processing assembly; 31. Welding main machine; 32. Cutting main machine; 41. First avoidance structure; 42. Second avoidance structure; 51. First cylinder section; 52. Second cylinder section; 53. To-be-welded cylinder section three; 54. To-be-welded cylinder section four; 6. Horizontal movement assembly. Detailed implementation manners

[0030] It should be noted that, without conflict, the embodiments and features in the embodiments of this application may be combined with each other. The following will describe this application in detail with reference to the drawings and in combination with the embodiments.

[0031] It should be noted that the terms used herein are only for describing specific implementation manners and are not intended to limit the exemplary implementation manners according to this application. As used herein, unless otherwise clearly specified in the context, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "comprise" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0032] Unless otherwise specifically stated, the relative arrangements of the components and steps set forth in these embodiments, the numerical expressions and values do not limit the scope of this application. At the same time, it should be understood that, for the convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0033] Circumferential welding is a welding process used to connect cylindrical components in industrial manufacturing. Cylindrical components such as pipelines, storage tanks, and pressure vessels are typically constructed from multiple segments. The joints between the segments form a ring around the circumference of the cylindrical component, known as the circumferential seam.

[0034] The circumferential seam welding of the barrel section must ensure welding quality and tightness to avoid problems such as leakage during the use of the barrel section. Uneven heat input during welding will cause deformation of the barrel section, affecting the product's appearance, strength, pressure resistance, and tightness. The relevant barrel section welding equipment uses a horizontal structure, and the deadweight of the barrel section will affect the centering effect, thereby affecting welding. In addition, due to the diversity of barrel section products and the various height and size specifications, the welding of the barrel section requires frequent switching of tooling fixtures according to the different lengths of the barrel section. The overall automation and intelligence level of the welding equipment is low, affecting production efficiency.

[0035] For this purpose, refer to Figures 1 to 12 As shown, the first embodiment of the present invention provides a vertical circumferential seam welding apparatus for barrel sections. This apparatus utilizes a vertical structure during barrel section circumferential seam welding, overcoming the problem of poor welding caused by gravity when welding long barrel sections placed horizontally. This reduces barrel section deformation during circumferential seam welding and improves welding quality. Furthermore, the welding equipment provided by this embodiment of the present invention can accommodate barrel section products of various sizes and specifications, significantly reducing the frequency of tooling changes and improving product welding efficiency.

[0036] The embodiment of the present invention provides a vertical welding device for annular seams of cylinder sections, comprising a processing platform 1, a fixing assembly 2 and a processing assembly 3. Figure 3 and Figure 4 The machining platform 1 shown is provided with a first avoidance structure 41 extending vertically through it. The fixing assembly 2 is used to secure the two barrel sections to be welded, ensuring that both barrel sections are vertically positioned within the first avoidance structure 41. When the barrel sections are horizontally positioned, the central axis of the barrel sections extends horizontally, and the plane of the welded annular seam is perpendicular to the horizontal plane. The arrangement of the two barrel sections to be welded is perpendicular to the direction of gravity. Consequently, relying solely on fixtures to clamp the two barrel sections during welding makes it difficult to center the annular seam. Insufficient fixture force can also cause the barrel sections to roll, resulting in insufficient welding accuracy.

[0037] In the first embodiment of the present invention, the two barrel segments to be welded are arranged vertically using a fixing assembly 2. In this vertical arrangement, the central axis of the barrel segments extends vertically, and the barrel segments are placed upright. The alignment of the two barrel segments aligns with the direction of gravity, facilitating alignment during circumferential welding. The circumferential seam between the two barrel segments, fixed by the fixing assembly 2, is then processed to form the weld.

[0038] The fixed component 2 and the processing platform 1 have an adjustable height difference in the vertical direction. The fixed component 2 and / or the processing platform 1 is provided with a height adjustment device to make the height of the circumferential seam where the two cylinder segments are butted adjustable in the vertical direction. In the first embodiment of the present invention, the first avoidance structure 41 is a hollow area of the processing platform 1, and the corresponding vertically placed cylinder segment is set as a columnar structure. The processing component 3 is arranged based on the processing platform 1, and the fixed component 2 is provided with a height adjustment device for adjusting the height of the cylinder segment in the first avoidance structure 41 so that the height of the circumferential seam where the two cylinder segments are butted corresponds to the height of the processing component 3 on the processing platform 1. The processing component 3 performs laser welding processing around the circumferential seam of the cylinder segment on the processing platform 1 to form a weld seam.

[0039] Specifically, the fixed component 2 includes a first fixing member 21 and a second fixing member 22. When welding the circumferential seam of the cylinder segment each time, there are two cylinder segments to be welded, and a circumferential seam is formed at the connection of the two cylinder segments. Among them, the first fixing member 21 is used to fix the first cylinder segment 51, and the second fixing member 22 is used to fix the second cylinder segment 52. When performing circumferential seam welding, the first cylinder segment 51 and the second cylinder segment 52 are coaxially arranged, and the second cylinder segment 52 is located on top of the first cylinder segment 51. The bottom surface of the second cylinder segment 52 is connected to the top surface of the first cylinder segment 51, and a circumferential seam is formed at the connection.

[0040] Furthermore, the first fixing member 21 is located below the second fixing member 22. The first fixing member 21 is configured to move the first cylinder segment 51 into the first avoidance structure 41 during welding, and the second fixing member 22 is used to lift and transport the second cylinder segment 52 into the first avoidance structure 41 and lift it above the first cylinder segment 51. The second fixing member 22 is set as a lifting structure. In some embodiments, the second fixing member 22 can be set as a forklift, a traveling crane or a gantry crane, etc.

[0041] Refer to Figure 6 As shown, the first fixing member 21 includes a mounting base 2101, a column 2102, an outer mounting table 2103 and a heightening platform 2104. The column 2102, the outer mounting table 2103 and the heightening platform 2104 are all arranged based on the mounting base 2101. The mounting base 2101 is placed horizontally to facilitate controlling the balance of the column 2102 and the outer mounting table 2103. The horizontally arranged mounting base 2101 corresponds to the vertically arranged cylinder segment and provides a stable supporting effect for the first cylinder segment 51.

[0042] One end of the column 2102 in the length direction is fixed to the top surface of the mounting base 2101, and the other end in the length direction is fixed to the same mounting ring 2105. The plane where the mounting ring 2105 is located is parallel to the top surface of the mounting base 2101, the length direction of the column 2102 is parallel to the vertical direction, and a plurality of columns 2102 are provided and are all arranged vertically in parallel. The column 2102 is used to support the outer mounting table 2103 and is provided with a height adjustment device to drive the movement of the cylinder section. The vertically arranged column 2102 facilitates controlling the movement direction. In the first embodiment of the present invention, at least three columns 2102 are provided, and at least three columns 2102 are arranged in a circumferential direction to form a cylindrical structure. Preferably, the columns 2102 are arranged equidistantly in the circumferential direction to provide stable support for the outer mounting table 2103 and the heightening table 2104 and apply force evenly to control their movement. Refer to Figure 6 As shown, four columns 2102 are provided and arranged equidistantly.

[0043] Next, the outer mounting table 2103 is sleeved on the outer periphery of the cylindrical structure formed by the columns 2102 and is slidably connected to the outer surface of the column 2102. In some embodiments, the outer mounting table 2103 is provided with a slider, and the outer surface of the column 2102 is provided with a guide rail extending in the vertical direction. The outer mounting table 2103 is slidably connected to the column 2102 through the cooperation of the guide rail and the slider. An external driving member 2107 is provided to drive the outer mounting table 2103 to perform reciprocating movement in the vertical direction on the outer periphery of the cylindrical structure, and the external driving member 2107 is set as a ball screw driving device.

[0044] The heightening table 2104 is sleeved on the outer periphery of the cylindrical structure formed by the columns 2102. The bottom mounting surface of the heightening table 2104 is connected to the top surface of the outer mounting table 2103. When the outer mounting table 2103 moves in the vertical direction, the heightening table 2104 moves synchronously with the outer mounting table 2103. On the one hand, the heightening table 2104 is provided with a cylinder section guiding and clamping device for fastening the first cylinder section 51 to enhance the clamping effect and prevent the cylinder section from slipping off. On the other hand, the heightening table 2104 and the outer mounting table 2103 cooperate to adjust the height of the cylinder section in the first avoidance structure 41 in the vertical direction.

[0045] Furthermore, refer to Figure 2 and Figure 6As shown, the first fixing member 21 further includes an inner mounting table 2106 and a weld support member 23. The inner mounting table 2106 is disposed on the inner wall of the cylindrical structure formed by the columns 2102 and is slidably connected to the inner facade of the columns 2102. The inner facade of the columns 2102 is set to be on the radial line direction of the cylindrical structure, on the side surface of the columns 2102 close to the central axis, which is also the surface of the columns 2102 opposite to the inner mounting table 2106. In some embodiments, the inner mounting table 2106 is provided with sliders, and the inner facade of the columns 2102 is provided with guide rails extending in the vertical direction. The inner mounting table 2106 is slidably connected to the columns 2102 through the cooperation between the guide rails and the sliders. An inner driving member 2108 is provided to drive the inner mounting table 2106 to reciprocate vertically along the inner wall of the cylindrical structure, and the inner driving member 2108 is set as a ball screw driving device.

[0046] It should be noted that in the first embodiment of the present invention, the outer mounting table 2103 and the inner mounting table 2106 are set to be independently controlled, and the vertical movement of the outer mounting table 2103 is independent of the vertical movement of the inner mounting table 2106. The outer mounting table 2103 is provided to drive the first cylinder section 51 to move up and down through the cooperation with the height increasing table 2104, change the height of the top surface of the first cylinder section 51 in the vertical direction, and further change the height of the position of the circumferential weld, so that the position of the circumferential weld in the vertical direction can correspond to the processing assembly 3. The inner mounting table 2106 is provided to drive the weld support member 23 to move vertically through the inner mounting table 2106, so that the height of the weld support member 23 corresponds to the position of the circumferential weld, and the circumferential weld is tightened to facilitate welding processing.

[0047] One end of the weld support member 23 is connected to the top surface of the inner mounting table 2106, and the other end of the weld support member 23 is set to have an adjustable size structure. The end of the weld support member 23 away from the inner mounting table 2106 is set to be able to expand outward or contract inward along the radial line direction of the mounting ring 2105. The plane where the mounting ring 2105 is located is parallel to the cross-section of the cylindrical structure formed by the columns 2102. When the first fixing member 21 fixes the first cylinder section 51, the cross-section of the first cylinder section 51 is parallel to the cross-section of the cylindrical structure formed by the columns 2102. Therefore, the weld support member 23 adjusts its height through the inner mounting table 2106, expands outward in the radial direction when corresponding to the position of the circumferential weld inside the cylinder section, and tightens the circumferential weld to facilitate welding processing.

[0048] In some embodiments, refer to Figure 8 and Figure 9As shown, the weld support 23 includes a first support frame 2301, a hinge 2302, and a first support plate 2303. The diameter of the first support frame 2301 is the same as that of the inner mounting table 2106, so that the weld support 23 has better stability when moving synchronously with the inner mounting table 2106. A first support plate 2303 is arranged on the outer periphery of the hinge 2302. The hinge 2302 is used to be driven by a first driving member 2304, so that the first support plate 2303 expands outwards or contracts inwards along the radial direction of the mounting ring 2105. The first driving member 2304 is mounted on the first support frame 2301. Optionally, the first driving member 2304 adopts an internal gear slewing bearing, and through double-motor drive and a linkage mechanism, drives the hinge 2302 to push the first support plate 2303 to tightly support the inner wall of the cylinder section along the radial direction. A plurality of sets of linkage mechanisms are arranged along the circumferential direction of the weld support 23 to make the first support plate 2303 evenly support the cylinder section tightly.

[0049] In some other embodiments, referring to Figures 10 to 12 As shown, the weld support 23 includes a second support frame 2305, a crank-slider mechanism 2306, and a second support plate 2307. The bottom of the second support frame 2305 is fixedly connected to the inner mounting table 2106. The crank-slider mechanism 2306 is used to push the second support plate 2307 to expand outwards or contract inwards along the radial direction of the mounting ring 2105. A plurality of sets of linkage mechanisms are arranged along the circumferential direction of the weld support 23 to make the second support plate 2307 evenly support the cylinder section tightly. The second support frame 2305 is arranged in an umbrella shape and can be used for a cylinder section to be welded with an incomplete bottom seal. After being removed, the weld support 23 can be manually transported through a smaller space, which is convenient for disassembly, assembly, and transportation.

[0050] The outer periphery of the weld support 23 is controlled by a motor, replacing the manual disassembly and manual tightening in the related art. It can not only improve the clamping efficiency and reduce the labor intensity of operators, but also tightly support the cylinder section evenly and control the minimum deformation amount of the cylinder section.

[0051] The interface of the first support frame 2301 for connecting to the inner mounting table 2106 has the same structure as the interface of the second support frame 2305 for connecting to the inner mounting table 2106. The weld support 23 including the first support frame 2301, the hinge 2302, and the first support plate 2303, and the weld support 23 including the second support frame 2305, the crank-slider mechanism 2306, and the second support plate 2307 can both be connected and installed with the inner mounting table 2106. It can be conveniently replaced according to different bottom-sealed cylinder sections, making the product adaptation range of the weld support 23 wider.

[0052] Specifically, referring to Figure 4As shown, the processing platform 1 includes a bearing platform 11, support columns 12 and a guardrail 13. The bearing platform 11 is horizontally arranged to provide support for the guardrail 13 and the processing component 3. A through hole is provided in the middle of the bearing platform 11. In the first embodiment of the present invention, the first avoidance structure 41 is a column that penetrates vertically based on this through hole, and the cross-sectional diameter of the column is the same as the aperture of the through hole. When the cylinder section is located below the through hole, it is located inside the first avoidance structure 41.

[0053] Further, referring to Figure 1 , Figure 3 and Figure 5 As shown, a rotary drive member 1101 is arranged around the outer periphery of the first avoidance structure 41 on the top surface of the bearing platform 11, and the rotary drive member 1101 is arranged along the orifice of the through hole. The rotary drive member 1101 is used to drive the processing component 3 to rotate reciprocally along the circumferential direction of the orifice, and the processing component 3 cuts and welds the circumferential seam of the cylinder section during the movement along the circumferential direction.

[0054] Referring to Figure 4 As shown, the guardrail 13 is arranged on the top surface of the bearing platform 11 and is located outside the first avoidance structure 41 and the processing component 3. The processing platform 1 is also provided with a guard ladder, and the guardrail 13 and the guard ladder provide installation protection for the staff. The support columns 12 are supported between the bearing platform 11 and the ground, and at least two support columns 12 are provided to provide a stable support effect. Preferably, referring to Figure 4 As shown, four support columns 12 are arranged to support the four corners of the bearing platform 11. Among them, a second avoidance structure 42 is arranged between at least two support columns 12, and the second avoidance structure 42 is used to provide avoidance for the movement of the fixing component 2.

[0055] In the first embodiment of the present invention, the bearing platform 11 is supported on the ground by the support columns 12, and the first fixing member 21 is arranged in the pit, so that there is a certain height difference between the processing platform 1 and the first fixing member 21 in the vertical direction and the height difference is adjustable. To facilitate the fixation between the first fixing member 21 and the first cylinder section 51, referring to Figure 1 and Figure 2 As shown, the vertical circumferential welding equipment for the cylinder section provided in the first embodiment of the present invention further includes a horizontal movement component 6. The horizontal movement component 6 is arranged in the pit and is used to move the first fixing member 21 and the cylinder section horizontally.

[0056] Specifically, the horizontal movement component 6 is located within the second avoidance structure 42. The horizontal movement component 6 includes a base and a rack and pinion drive mechanism. Among them, the base is installed in the pit, and at least part of the area on the base is directly below the through-hole of the bearing platform 11. A rack is provided on the base, and a pinion capable of cooperating with the rack is provided on the surface of the mounting seat 2101 facing away from the processing platform 1. Under the cooperation of the rack and pinion drive mechanism, the first fixing member 21 and the cylinder section can move horizontally along the base. After passing through the second avoidance structure 42, it is directly below the through-hole of the bearing platform 11 and enters the first avoidance structure 41.

[0057] Furthermore, in the vertical direction, the height difference between the horizontal movement component 6 and the bearing platform 11 is greater than the extension length of the cylinder section. Sufficient space is reserved for the first fixing member 21 to install the first cylinder section 51. To prevent interference between the first cylinder section 51 and the first fixing member 21 when moving horizontally towards the first avoidance structure 41 and the processing platform 1.

[0058] Specifically, referring to Figure 5 As shown, the processing component includes a welding main machine 31 and a cutting main machine 32. The cutting main machine 32 and the welding main machine 31 are arranged along the circumferential direction outside the first avoidance structure 41. The cutting main machine 32 is used to cut the first cylinder section 51 and the second cylinder section 52 around the circumferential seam, and the welding main machine 31 is used to weld around the circumferential seam.

[0059] In some embodiments, the rotary drive member 1101 is set as an external tooth type rotary bearing, and is driven by a dual motor to drive the welding main machine 31 and the cutting main machine 32 to perform reciprocating circular motion along the circumferential direction of the through-hole of the bearing platform 11. Preferably, when the processing component 3 moves along the circumferential direction, the stroke of the movement path is set as an arc with a central angle of ±210° based on the starting point.

[0060] The execution end of the cutting main machine 32 is arranged towards the center of the first avoidance structure 41, and the execution end of the cutting main machine 32 is driven to move in the vertical direction and / or in the radial direction of the cross-section of the first avoidance structure 41. The cutting main machine 32 includes a cutting head, a first cutting drive shaft, and a second cutting drive shaft. The cutting head is set as the execution end of the cutting main machine 32. The first cutting drive shaft is used to drive the cutting head to move in the vertical direction, and the second cutting drive shaft is used to drive the cutting head to move in the radial direction of the cross-section of the first avoidance structure 41. Under the control of the control unit, the cutting main machine 32 can automatically track the trajectory of the circumferential seam for cutting operations.

[0061] The execution end of the welding main body 31 is arranged towards the center of the first avoidance structure 41, and the execution end of the welding main body 31 is driven to move in the vertical direction and / or in the radial direction of the cross-section of the first avoidance structure 41. The welding main body 31 includes a laser welding head, a first welding drive shaft, and a second welding drive shaft. The laser welding head is set as the execution end of the welding main body 31. The first welding drive shaft is used to drive the laser welding head to move in the vertical direction, and the second welding drive shaft is used to drive the laser welding head to move in the radial direction of the cross-section of the first avoidance structure 41. Under the control of the control unit, the welding main body 31 can automatically track the trajectory of the circumferential seam for welding operations.

[0062] The circumferential seam vertical welding equipment for cylinder sections provided in the first embodiment of the present invention places the cylinder sections vertically and performs laser welding, reducing the difficulty of circumferential seam alignment and processing difficulty, and controlling the deformation amount of the cylinder sections. Through height adjustment, cylinder sections of different lengths can be flexibly processed. Without frequently switching fixtures, it can also adapt to the continuous welding operations of multiple cylinder sections, greatly improving the welding quality and production efficiency, with high flexibility and a wider scope of application.

[0063] Refer to Figure 13 As shown in the figure, the second embodiment of the present invention provides a circumferential seam vertical welding method for cylinder sections. This method is implemented based on the circumferential seam vertical welding equipment for cylinder sections provided in the first embodiment. Therefore, this welding method includes all the technical effects of the equipment in the first embodiment. Since the technical effects of the equipment have been described in detail above, they will not be elaborated here. Specifically, when performing circumferential seam vertical welding on the first cylinder section 51 and the second cylinder section 52, the method provided in the second embodiment includes the following steps: Step S100, install the two cylinder sections to be welded on the fixing component 2.

[0064] As an implementable manner, step S100 includes: The position of the first fixing member 21 on the horizontal moving component 6 is set in an area outside the processing platform 1. Install the first cylinder section 51 on the raising platform 2104 of the first fixing member 21 and fix it through the clamping device on the raising platform 2104.

[0065] Move the first fixing member 21 horizontally along the horizontal moving component 6, reach directly below the through hole of the bearing platform 11 through the second avoidance structure 42, and enter the first avoidance structure 41.

[0066] Lift the second cylinder section 52 by the second fixing member 22 and hoist it above the bearing platform 11.

[0067] Step S200, adjust the fixing component 2 so that the circumferential seam position of the cylinder section corresponds to the processing component 3.

[0068] Step S200 includes: Vertically, the height of the processing component 3 is consistent with the height of the welding. Therefore, the height of the processing component 3 is consistent with the height of the weld seam finally obtained by welding. Adjust the second fixing member 22 so that the height of the bottom surface of the second cylinder section 52 corresponds to the height of the processing component 3, and the cutting main body 32 operates to cut the bottom surface of the second cylinder section 52.

[0069] Drive the outer mounting table 2103 to move in the vertical direction through a ball screw, so that the top surface of the first cylinder section 51 corresponds to the height of the processing component 3. At this time, a circumferential gap is formed between the top surface of the first cylinder section 51 and the bottom surface of the second cylinder section 52 in the vertical direction, and the height of the circumferential gap position corresponds to the processing component 3.

[0070] The weld support member 23 is tightened radially outwards and abuts against the inner wall of the circumferential gap to support the first cylinder section 51 and the second cylinder section 52.

[0071] Step S300, the processing component 3 performs laser welding on the circumferential gap. Specifically, the welding main body 31 surrounds the circumferential gap position to weld the circumferential gap between the first cylinder section 51 and the second cylinder section 52 to obtain an annular weld seam.

[0072] Specifically, referring to Figure 13 As shown, when performing vertical circumferential welding of multiple cylinder sections, the method provided in the second embodiment further includes: After the laser welding of the first cylinder section 51 and the second cylinder section 52 is completed, the end of the weld support member 23 contracts radially inwards to release the tightening of the cylinder section.

[0073] The outer mounting table 2103 moves downwards in the vertical direction, and the height increasing platform 2104 and the cylinder section move synchronously with the outer mounting table 2103 until the height of the top surface of the welded part obtained in step S300 is lower than the height of the processing component 3.

[0074] It should be noted that when welding multiple cylinder sections, referring to Figure 13 As shown, in each vertical circumferential welding for forming the circumferential gap, the first cylinder section 51 and the second cylinder section 52 are used. When it is necessary to perform circumferential welding on the welded part obtained in step S300 and the to-be-welded cylinder section three 53 again after step S300 is completed, the welded part obtained in step S300 is fixed as a whole by the first fixing member 21, that is, the welded part obtained in step S300 actually serves as the first cylinder section 51 in the new circumferential welding method; the to-be-welded cylinder section three 53 is actually transported above the first cylinder section 51 as the second cylinder section 52 in the new circumferential welding method. Repeat steps S200 - S300, transport the to-be-welded cylinder section three 53 to the ground so that its height corresponds to that of the processing component 3 and cut it, then move the welded part obtained in step S300, tighten the circumferential gap and perform laser welding.

[0075] Next, the welded part obtained by welding three cylinder segments is used as the first cylinder segment 51 in the next circumferential seam welding. The cylinder segment four 54 to be welded is hoisted above and used as the second cylinder segment 52 in the next circumferential seam welding. Repeat steps S200 - S300 to obtain a cylinder segment product after welding four cylinder segments. When the cylinder segment product includes multiple cylinder segments, the circumferential seam laser welding is carried out one by one through the method in Embodiment 2 of the present invention. Through the height difference setting between the bearing platform 11 and the horizontal moving assembly 6, the first fixing member 21 can fix the first cylinder segment 51. The first cylinder segment 51 can be a single cylinder segment or a welded part after welding multiple cylinder segments.

[0076] When the cylinder segment product includes N cylinder segments, N - 1 circumferential seam weldings need to be carried out correspondingly. After the welding is completed, the clamping of the cylinder segment by the heightening platform 2104 is released, and the welded cylinder segment product is lifted out from the first avoidance structure 41 to obtain the cylinder segment product.

[0077] In other embodiments, submerged arc welding, shielded metal arc welding and other welding methods that meet the actual requirements can also be used for circumferential seam welding, not limited to this. In Embodiment 2 of the present invention, laser welding is preferably used to process the circumferential seams of the cylinder segments. Laser welding technology has high welding precision and small heat influence; the laser beam can be focused on an extremely small area, which is suitable for the circumferential seam area of the cylinder segments. In addition, for workpieces with relatively thick cylinder walls in the aerospace field, laser welding can also provide a high energy density to improve the welding efficiency.

[0078] The welding method provided in Embodiment 2 of the present invention can perform cutting and welding operations on the circumferential seams between cylinder segments at the same position, and the processing efficiency is relatively high. By adjusting the height of the first fixing member 21 and the first cylinder segment 51, the fixing of the first cylinder segment 51 with different lengths can be realized. When facing cylinder segments with different length specifications, there is no need to frequently replace the tooling fixtures, which greatly reduces the tooling replacement frequency and improves the operation efficiency.

[0079] Changing the horizontal circumferential seam welding of the cylinder segment to vertical welding solves the problem of difficult centering. It overcomes the influence brought by the self - gravity of the cylinder segment during horizontal welding, reduces the deformation amount of the cylinder segment, avoids problems such as airtightness of the cylinder segment product due to deformation, and improves the welding quality.

[0080] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations of the spatial relative descriptions used herein will be made.

[0081] 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. Without additional statements, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present application.

[0082] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A circumferential seam vertical welding device for a cylinder section, characterized in that, It includes a processing platform (1), a fixing component (2) and a processing component (3); The processing platform (1) is provided with a first avoidance structure (41) running through in the vertical direction; The fixing component (2) is used for fixing two cylinder sections to be welded, and making the two cylinder sections to be welded vertically arranged within the first avoidance structure (41). The fixing component (2) and / or the processing platform (1) is provided with a height adjustment device so that the height of the circumferential weld where the two cylinder sections are butted is adjustable in the vertical direction; Based on the processing platform (1), the processing component (3) performs laser welding around the circumferential weld.

2. The circumferential seam vertical welding equipment for the cylinder section according to claim 1, characterized in that The fixing component (2) includes a first fixing piece (21) and a second fixing piece (22); The first fixing piece (21) is used for fixing the first cylinder section (51), and the first fixing piece (21) is configured to move the first cylinder section (51) into the first avoidance structure (41) during welding; The second fixing piece (22) is used for fixing the second cylinder section (52). The second cylinder section (52) is coaxially arranged with the first cylinder section (51) and connects to the top of the first cylinder section (51). The second fixing piece (22) is arranged as a lifting structure.

3. The circumferential seam vertical welding equipment for the cylinder section according to claim 2, characterized in that, The first fixing piece (21) includes a mounting seat (2101), a column (2102), an outer mounting platform (2103) and a heightening platform (2104); There are at least three columns (2102) and they are all vertically arranged. One end of the column (2102) is fixed on the mounting seat (2101), and the other end of the column (2102) is fixed to the same mounting ring (2105). The columns (2102) are arranged in a cylindrical structure; The outer mounting platform (2103) is sleeved on the outer periphery of the cylindrical structure and is slidably connected to the outer facade of the column (2102); The heightening platform (2104) is sleeved on the outer periphery of the cylindrical structure and is fixed to the top surface of the outer mounting platform (2103).

4. The circumferential seam vertical welding equipment for cylinder segments according to claim 3, characterized in that, The first fixing piece (21) further includes an inner mounting platform (2106) and a weld support (23); The inner mounting platform (2106) is arranged on the inner wall of the cylindrical structure and is slidably connected to the inner facade of the column (2102). The inner mounting platform (2106) and the outer mounting platform (2103) are set to be independently controlled; One end of the weld support (23) is connected to the top surface of the inner mounting platform (2106), and the size of the other end of the weld support (23) in the radial direction of the mounting ring (2105) is adjustable.

5. The circumferential seam vertical welding equipment for cylinder segments according to claim 4, characterized in that, The weld support (23) includes a first support frame (2301), a hinge (2302) and a first support plate (2303); The diameter of the first support frame (2301) is the same as that of the inner mounting platform (2106); The hinge (2302) is used to be driven by a first driving piece (2304) so that the first support plate (2303) expands outwards or contracts inwards along the radial direction of the mounting ring (2105).

6. The circumferential seam vertical welding equipment for cylinder sections according to claim 4, characterized in that, The weld support (23) includes a second support frame (2305), a crank-slider mechanism (2306), and a second support plate (2307); The second support frame (2305) is arranged in an umbrella-like structure; The crank-slider mechanism (2306) is used to push the second support plate (2307) to expand outward or contract inward along the radial direction of the mounting ring (2105).

7. The circumferential seam vertical welding equipment for cylinder sections according to claim 1, characterized in that, The processing platform (1) includes a base (11), support columns (12), and a guardrail (13); The base (11) is horizontally arranged, and a rotary drive (1101) is arranged on the top surface of the base (11) around the outer periphery of the first avoidance structure (41). The rotary drive (1101) is used to drive the processing component (3) to perform a reciprocating rotary motion along the circumferential direction; The support columns (12) are supported between the base (11) and the ground, and a second avoidance structure (42) is arranged between at least two of the support columns (12). The second avoidance structure (42) is used to provide an avoidance for the fixing component (2); The guardrail (13) is arranged on the top surface of the base (11) and is located outside the first avoidance structure (41) and the processing component (3).

8. The circumferential seam vertical welding equipment for the cylinder section according to claim 7, characterized in that, It further includes a horizontal moving component (6). The horizontal moving component (6) is located within the second avoidance structure (42), and the horizontal moving component (6) is used to drive the first fixing member (21) of the fixing component (2) to move in the horizontal direction; The height difference between the horizontal moving component (6) and the base (11) in the vertical direction is greater than the extension length of the cylinder section.

9. The circumferential seam vertical welding equipment for cylinder segments according to claim 1, characterized in that, The processing component (3) includes a welding main machine (31) and a cutting main machine (32); the cutting main machine (32) and the welding main machine (31) are arranged along the circumferential direction outside the first avoidance structure (41); The execution end of the welding main machine (31) is arranged towards the center of the first avoidance structure (41), and the execution end of the welding main machine (31) is driven to move in the vertical direction and / or along the radial direction of the cross-section of the first avoidance structure (41); The execution end of the cutting main machine (32) is arranged towards the center of the first avoidance structure (41), and the execution end of the cutting main machine (32) is driven to move in the vertical direction and / or along the radial direction of the cross-section of the first avoidance structure (41).

10. A vertical circumferential welding method for cylinder segments, characterized in that, The method is implemented based on the circumferential seam vertical welding equipment for cylinder sections according to any one of claims 1 to 9, and the method includes: Installing two cylinder sections to be welded on the fixing component (2); Adjusting the fixing component (2) so that the circumferential seam position of the cylinder section corresponds to the processing component (3); The processing component (3) performs laser welding on the circumferential seam.

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