Welding system applied to stainless steel rocket tank assembly circular seam

Abstract

The invention provides a welding system applied to a stainless steel rocket tank assembly circular seam. The welding system comprises a short cylinder-short cylinder circular seam welding inner supporting module and a short cylinder-end socket circular seam welding inner supporting module. The short cylinder-short cylinder girth welding inner supporting module comprises a short cylinder-short cylinder supporting module and a short cylinder-short cylinder inner supporting module; the short cylinder-end socket girth welding inner supporting module comprises a short cylinder-end socket supporting base and a foldable stand column module, and the short cylinder-end socket supporting base is used for supporting the foldable stand column module. The foldable stand column module comprises a short cylinder-end socket supporting stand column and a short cylinder-end socket inner supporting module, and the short cylinder-end socket inner supporting module can rotate around the short cylinder-end socket supporting stand column so that the free end of the short cylinder-end socket inner supporting module can be close to or away from the short cylinder-end socket supporting stand column. The welding system can simplify the girth welding process of the stainless steel storage tank assembly.

Description

Technical Field

[0001] The invention relates to the field of launch vehicles, and in particular to a welding system for annular seams of stainless steel rocket tank assemblies. Background Art

[0002] In the existing manufacturing process of large-diameter stainless steel rocket tanks, the circumferential seam welding of the stainless steel tank assembly mostly uses a full-circular inner support tooling, and the manufacturing process has the following difficulties: First, the full-circular inner support tooling needs to be clamped once, and the welding of the entire rotating circular circumferential seam needs to be completed at one time; Second, the full-circular inner support tooling cannot be directly used for the circumferential seam welding of the head and the barrel section after clamping. The inner support tooling needs to be installed inside the barrel section or the head, disassembled after welding is completed, and then taken out from the manhole of the head. The overall process is complicated, the process control is difficult, and the weld cannot be leveled.

[0003] In order to simplify the circumferential seam welding process of the stainless steel tank assembly, achieve stable and controllable welding process, and improve weld quality, it is particularly important to design a welding system for the circumferential seam of the stainless steel rocket tank assembly. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a welding system for the annular seam of a stainless steel rocket tank assembly.

[0005] The present invention provides a welding system for the annular seam of a stainless steel rocket tank assembly, comprising: a short barrel-short barrel annular seam welding internal support module and a short barrel-end cap annular seam welding internal support module; the short barrel-short barrel annular seam welding internal support module comprises a short barrel-short barrel support module and a short barrel-short barrel internal support module, the short barrel-short barrel support module is used to support the short barrel-short barrel internal support module; the short barrel-short barrel internal support module can rotate along the circumferential direction of the short barrel-short barrel support module to support the butt annular seam of the short barrels; the short barrel-end cap annular seam welding internal support module comprises a short barrel-end cap support base and a foldable The column module, the short cylinder-head support base is used to support the foldable column module; the foldable column module includes a short cylinder-head support column and a short cylinder-head internal support module, the short cylinder-head internal support module can rotate around the short cylinder-head support column to make the free end of the short cylinder-head internal support module approach or move away from the short cylinder-head support column; the foldable column module can rotate around the circumferential direction of the short cylinder-head support base to drive the short cylinder-head internal support module to rotate around the circumferential direction of the short cylinder-head support base to support the butt annular seam between the short cylinder and the head.

[0006] According to one embodiment of the present invention, it also includes an auxiliary frame for lifting the storage tank, cooperating with the short cylinder-short cylinder girth welding internal support module and the short cylinder-head girth welding internal support module to butt and butt girth weld short cylinders and short cylinders and heads.

[0007] According to one embodiment of the present invention, it also includes a ground rail; the short cylinder-short cylinder annular seam welding internal support module and the short cylinder-head annular seam welding internal support module can move along the ground rail to reach a predetermined welding position.

[0008] According to one embodiment of the present invention, it also includes an annular seam welding external compression module for compressing the annular seams between the short tubes and the annular seams between the short tubes and the head.

[0009] According to one embodiment of the present invention, the short tube-short tube support module includes a central axis, and the short tube-short tube inner support module includes a rotating rod; the two ends of the rotating rod are respectively connected to the central axis and the short tube-short tube inner support block, and the rotating rod can rotate around the central axis.

[0010] According to one embodiment of the present invention, the short cylinder-head internal support module includes a first driving link, a connecting arm and a short cylinder-head internal support block, and the two ends of the connecting arm are respectively connected to the short cylinder-head support column and the short cylinder-head internal support block; the short cylinder-head internal support block is used to support the butt annular seam between the short cylinder and the head; one end of the first driving link is connected to the short cylinder-head support column through a first screw slider, and the other end of the first driving link is connected to the free end of the connecting arm; the first screw slider can slide along the axial direction of the short cylinder-head support column, and the first driving link can be retracted to drive the connecting arm to rotate.

[0011] According to one embodiment of the present invention, the short cylinder-head internal support module also includes a connecting rod; the two ends of the connecting rod are respectively used to connect the free end of the connecting arm and the short cylinder-head internal support block, and the connecting rod can rotate around the connecting arm to make the short cylinder-head internal support block approach or move away from the docking annular gap between the short cylinder and the head.

[0012] According to one embodiment of the present invention, a welding module is also included; the welding module includes a welding head for welding the annular seam.

[0013] According to one embodiment of the present invention, the annular seam welding external clamping module includes a clamping mechanism frame, the clamping mechanism frame is provided with a clamping cylinder and a clamping block, the clamping cylinder and the clamping block are fixedly connected; the clamping cylinder is retractable to drive the clamping block to clamp the annular seam.

[0014] According to one embodiment of the present invention, it further comprises a welding support module; the welding support module is provided with an annular welding bottom guide rail, and the welding module can move along the welding bottom guide rail so that the welding module rotates around the circumferential direction of the short cylinder.

[0015] According to the welding system for the annular seams of a stainless steel rocket tank assembly of the present invention, the annular seams between the short barrels and the short barrels and the annular seams between the short barrels and the head are supported respectively through the short barrel-short barrel annular seam welding internal support module and the short barrel-head annular seam welding internal support module. A segmented welding process is adopted for all the annular seams of the assembly, and there is no need to adopt weld tracking, thereby simplifying the annular seam welding process of the stainless steel tank assembly.

[0016] It should be understood that the above general description and the following detailed description are merely exemplary and illustrative and are not intended to limit the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following drawings are a part of the specification of the present invention, and illustrate exemplary embodiments of the present invention. Together with the description of the specification, the accompanying drawings are used to explain the principles of the invention.

[0018] Figure 1 is a stereogram of a welding system for an annular seam of a stainless steel rocket tank assembly according to an embodiment of the present invention; Figure 2 is a stereogram of a welding system for an annular seam of a stainless steel rocket tank assembly according to an embodiment of the present invention; Figure 3 It is a three-dimensional diagram of a short tube-head annular seam welded inner support module according to an embodiment of the present invention; Figure 4 It is an expanded view of a short tube-head annular seam welded inner support module according to an embodiment of the present invention; Figure 5 It is a folding diagram of a short tube-head annular seam welded inner support module according to an embodiment of the present invention; Figure 6 It is a combined diagram of a girth welding external pressure module and a welding module according to an embodiment of the present invention; Figure 7 is a three-dimensional diagram of a girth welded external pressure module according to an embodiment of the present invention; Figure 8 It is a three-dimensional diagram of a short-tube-short-tube annular seam welded inner support module according to an embodiment of the present invention; Fig. 9 It is a three-dimensional diagram of a short tube-short tube inner support block according to an embodiment of the present invention; Fig.10 It is a partial stereogram of a short tube-head annular seam welded inner support module according to an embodiment of the present invention; Fig.11 yes Fig.10 Side view of Fig.12 yes Fig.10 A top view of Fig.13 yes Fig.10 Side view of Fig.14 It is a partial stereogram of a short tube-head annular seam welded inner support module according to an embodiment of the present invention; Fig.15 It is a three-dimensional diagram of a short tube-end support block according to an embodiment of the present invention; Fig.16 is a three-dimensional diagram of a welding module according to an embodiment of the present invention; Fig.17 is a top view of a welding module according to an embodiment of the present invention; Fig.18 It is a partial stereogram of a girth welded external pressure module according to one embodiment of the present invention; Fig.19 is a top view of a girth welded external pressure module according to an embodiment of the present invention; Fig. 20 It is a partial side view of a girth welded external pressure module according to one embodiment of the present invention; Fig.21 is a rear view of a welding module according to an embodiment of the present invention; Fig. 22 is a three-dimensional diagram of a welding support module according to an embodiment of the present invention; Fig.23 It is an assembly diagram of a welding system for welding a butt joint annular seam between a short cylinder and a head according to an embodiment of the present invention; Fig.24 It is an assembly diagram of a welding system for welding a butt annular seam between a short cylinder and a head according to an embodiment of the present invention.

[0019] Description of reference numerals: 1 auxiliary frame; 2 annular welded internal support module; 3 annular welded external pressure module; 4 welding module; 5- welding support module; 1-1 auxiliary frame base; 1-2 auxiliary frame column; 2-2 short cylinder-short cylinder annular welded internal support module; 2-3 short cylinder-head annular welded internal support module; 2-4 ground rail; 3-1 clamping mechanism frame; 3-2 clamping cylinder; 3-3 clamping block; 3-4 clamping mechanism support column; 3-5 external clamping mechanism support base; 3-6 external clamping mechanism mounting seat; 3-7 base arc helical gear guide rail; 3-8 base guide rail; 3-9 fourth screw rod; 3-10 limit Positioning wheel; 3-11 base driving mechanism; 4-1 frame column; 4-2 welding head; 4-3 rolling mechanism; 4-4 frame base; 4-5 driving helical gear mechanism; 4-6 guide wheel; 5-1 welding bottom guide rail; 5-2 welding bottom support seat; 5-3 guardrail; 2-2-1 short cylinder-short cylinder inner support module; 2-2-2 short cylinder-short cylinder support column; 2-2-3 short cylinder-short cylinder support base; 2-2-4 short cylinder-short cylinder support plate; 2-3-1 short cylinder-end support base; 2-3-2 foldable column module; 3-1-1 clamping mechanism frame beam; 3-1-2 clamping Tightening mechanism frame bracket; 2-2-1-1 center axis; 2-2-1-2 rotating rod; 2-2-1-3 short cylinder-short cylinder inner support block; 2-3-2-1 rotating gear; 2-3-2-2 driving gear mechanism; 2-3-2-3 short cylinder-head support column; 2-3-2-4 first screw slider; 2-3-2-5 first driving connecting rod; 2-3-2-6 first ejection cylinder; 2-3-2-7 connecting arm; 2-3-2-8 second screw slider; 2-3-2-9 second connecting rod; connecting rod 2-3-2-10; 2-3-2-11 support rod; 2-3-2 -12 two-axis connecting rod; 2-3-2-13 short cylinder - head inner support block; 2-3-2-14 second ejection cylinder; 2-3-2-15 retraction cylinder; 2-3-2-16 short cylinder - head support base column; 2-2-1-3-1 short cylinder - short cylinder arc-shaped gas protection groove; 2-2-1-3-2 short cylinder - short cylinder rolling support surface; 2-2-1-3-3 short cylinder - short cylinder protective gas inlet; 2-3-2-13-1 short cylinder - head rolling support surface; 2-3-2-13-2 short cylinder - head arc-shaped gas protection groove; 2-3-2-13-3 short cylinder - head protective gas inlet. DETAILED DESCRIPTION

[0020] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are used to illustrate the principles of the present invention, and are not configured to limit the present invention. In addition, the structural components in the drawings are not necessarily drawn to scale. For example, the sizes of some structural components or areas in the drawings may be enlarged for other structural components or areas to help understand the embodiments of the present invention.

[0021] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the embodiments of the present invention. In the description of the present invention, it should be noted that, unless otherwise specified, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0022] In addition, the terms "include", "comprise", "have" or any other variations thereof are intended to cover non-exclusive inclusion, so that a structure or component including a series of elements includes not only those elements, but also other mechanical elements that are not explicitly listed or inherent in the structure or component. In the absence of more restrictions, the elements defined by the sentence "include..." do not exclude the existence of other identical elements in the article or device including the elements.

[0023] Spatially related terms such as "below", "beneath", "under", "low", "above", "on", "high", etc. are used to facilitate description to explain the positioning of one element relative to a second element, indicating that these terms are intended to cover different orientations of the device in addition to orientations different from those shown in the figures. In addition, for example, "one element is above / below another element" can mean that the two elements are in direct contact, or that there are other elements between the two elements. In addition, terms such as "first", "second", etc. are also used to describe various elements, regions, parts, etc., and do not specifically refer to the meaning of order or sequence, and should not be regarded as limiting. Similar terms are used throughout the description to represent similar elements.

[0024] In the process of describing the present invention below, in certain scene descriptions, only "rocket", "launch vehicle", "spacecraft", "space launch vehicle" or "missile" may be used. This is only for the convenience of description, and its connotation is not limited to the specific words used. Generally, the launch vehicles and rockets of the present invention include not only space vehicles used to carry satellites or spacecraft or other probes, but also various types of missiles, rockets and other weapons used to carry military payloads, as well as similar products that can send payloads into the air. When interpreting the above specific words, those skilled in the art shall not limit launch vehicles and rockets to only one of launch vehicles or missiles based on the specific words used to describe the scene, thereby narrowing the scope of protection of the present invention.

[0025] For those skilled in the art, the present invention can be implemented without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present invention by showing examples of the present invention.

[0026] Figure 1 is a stereogram of a welding system for an annular seam of a stainless steel rocket tank assembly according to an embodiment of the present invention; Figure 2 is a stereogram of a welding system for an annular seam of a stainless steel rocket tank assembly according to an embodiment of the present invention; Figure 3 It is a three-dimensional diagram of a short tube-head annular seam welded inner support module according to an embodiment of the present invention; Figure 4 It is an expanded view of a short tube-head annular seam welded inner support module according to an embodiment of the present invention; Figure 5 It is a folding diagram of a short tube-head annular seam welded inner support module according to an embodiment of the present invention; Figure 6 It is a combined diagram of a girth welding external pressure module and a welding module according to an embodiment of the present invention; Figure 7 is a three-dimensional diagram of a girth welded external pressure module according to an embodiment of the present invention; Figure 8 It is a three-dimensional diagram of a short-tube-short-tube annular seam welded inner support module according to an embodiment of the present invention; Fig. 9 It is a three-dimensional diagram of a short tube-short tube inner support block according to an embodiment of the present invention; Fig.10 It is a partial stereogram of a short tube-head annular seam welded inner support module according to an embodiment of the present invention; Fig.11 yes Fig.10 Side view of Fig.12 yes Fig.10 A top view of Fig.13 yes Fig.10 Side view of Fig.14 It is a partial stereogram of a short tube-head annular seam welded inner support module according to an embodiment of the present invention; Fig.15 It is a three-dimensional diagram of a short tube-end support block according to an embodiment of the present invention; Fig.16 is a three-dimensional diagram of a welding module according to an embodiment of the present invention; Fig.17is a top view of a welding module according to an embodiment of the present invention; Fig.18 It is a partial stereogram of a girth welded external pressure module according to one embodiment of the present invention; Fig.19 is a top view of a girth welded external pressure module according to an embodiment of the present invention; Fig. 20 It is a partial side view of a girth welded external pressure module according to one embodiment of the present invention; Fig.21 is a rear view of a welding module according to an embodiment of the present invention; Fig. 22 is a three-dimensional diagram of a welding support module according to an embodiment of the present invention; Fig.23 It is an assembly diagram of a welding system for welding a butt joint annular seam between a short cylinder and a head according to an embodiment of the present invention; Fig.24 It is an assembly diagram of a welding system for welding a butt annular seam between a short cylinder and a head according to an embodiment of the present invention.

[0027] like Figure 1-5 As shown, the present invention provides a welding system for the annular seam of a stainless steel rocket tank assembly, including: a short barrel-short barrel annular seam welding internal support module 2-2 and a short barrel-end cap annular seam welding internal support module 2-3. The short barrel-short barrel annular seam welding internal support module 2-2 includes a short barrel-short barrel support module and a short barrel-short barrel internal support module 2-2-1, and the short barrel-short barrel support module is used to support the short barrel-short barrel internal support module 2-2-1. The short barrel-short barrel internal support module 2-2-1 can rotate along the circumferential direction of the short barrel-short barrel support module to support the butt annular seam between the short barrels. The short barrel-end cap annular seam welding internal support module 2-3 includes a short barrel-end cap support base 2-3-1 and a foldable column module 2-3-2, and the short barrel-end cap support base 2-3-1 is used to support the foldable column module 2-3-2. The foldable column module 2-3-2 includes a short cylinder-end support column 2-3-2-3 and a short cylinder-end internal support module. The short cylinder-end internal support module can rotate around the short cylinder-end support column 2-3-2-3 to make the free end of the short cylinder-end internal support module approach or move away from the short cylinder-end support column 2-3-2-3. The foldable column module 2-3-2 can rotate around the circumferential direction of the short cylinder-end support base 2-3-1 to drive the short cylinder-end internal support module to rotate around the circumferential direction of the short cylinder-end support base 2-3-1 to support the butt joint annular seam between the short cylinder and the end cap.

[0028] Specifically, in the existing short-barrel welding of the tank assembly head, the internal support tooling mostly adopts an integral internal support structure, which has the following characteristics: first, it is mainly used for aluminum alloy or other steel tanks with a wall thickness greater than 4 mm. The inner wall of this type of tank has high rigidity and high requirements for roundness, and an integral support is required to meet production needs; second, the internal support structure of the integral support equipment is complex and difficult to manufacture. It is restricted by the interference of the circuit and gas lines of the internal support equipment, and the overall support structure is difficult to shrink, making it difficult to balance the equipment volume and rigidity. When the bottom flange of the tank bottom head is limited, the use of an integral internal support equipment will inevitably weaken the rigidity of the internal support tooling and reduce the space occupied by a single internal support; third, the existing integral internal support tooling has poor rigidity in the radial direction in the manufacture of large tanks (tanks with a diameter of more than 3.5 m), and the support arm is too long. The tooling needs to extend deeper into the tank, limiting its scope of use.

[0029] In this embodiment, the girth welded internal support module 2 for the stainless steel tank assembly includes a short-tube-short-tube girth welded internal support module 2-2 and a short-tube-end cap girth welded internal support module 2-3, which are respectively used to support the butt girths of the short-tubes and the butt girths of the short-tubes and the end caps, and the short-tube-end cap internal support module rotates around the short-tube-end cap support column 2-3-2-3 in the plane where the axis of the short-tube-end cap support column 2-3-2-3 is located, thereby realizing the folding and unfolding of the short-tube-end cap internal support module. The welding system uses a segmented welding process to complete the welding of all girths of the assembly, and does not need to use weld tracking. In addition, the welding system does not require the disassembly of the internal support module 2, especially when welding the butt-joint annular seam between the short cylinder and the head, the short cylinder-head annular seam welding internal support module 2-3 does not need to be disassembled, and the welding of the short cylinder butt-joint annular seam of the stainless steel tank assembly and the short cylinder sealing annular seam of the head can be supported through the manhole, thereby simplifying the annular seam welding process of the stainless steel tank assembly.

[0030] like Figure 1 As shown, according to one embodiment of the present invention, in addition to the girth welding internal support module 2, the welding system also includes an auxiliary frame 1 for lifting the storage tank, cooperating with the short cylinder-short cylinder girth welding internal support module 2-2 and the short cylinder-head girth welding internal support module 2-3, to perform butt joint and butt girth welding of short cylinders and short cylinders, and short cylinders and heads.

[0031] In this embodiment, the auxiliary frame 1 can be used to lift and position the tank, cooperate with the short cylinder-short cylinder annular seam welding internal support module 2-2 and the short cylinder-head annular seam welding internal support module 2-3 to internally support the butt annular seams between the short cylinders and the short cylinders and the heads, and cooperate with the welding equipment to form a welding tool. The auxiliary frame 1 can also provide installation space for the welding equipment or welding module 4 (such as laser welding equipment), and provide space for lifting and transporting the tank.

[0032] According to one embodiment of the present invention, a short cylinder-head support base column 2-3-2-16 is arranged at the lower end of the short cylinder-head support column 2-3-2-3, and the short cylinder-head support column 2-3-2-3 is rotatably connected to the short cylinder-head support base column 2-3-2-16.

[0033] Further, the short cylinder-end head support base column 2-3-2-16 is provided with a rotary gear 2-3-2-1 along its circumferential direction, and the short cylinder-end head support base column 2-3-2-3 is provided with a driving gear mechanism 2-3-2-2 corresponding to the rotary gear 2-3-2-1. The rotary gear 2-3-2-1 cooperates with the driving gear mechanism 2-3-2-2 to drive the short cylinder-end head support base column 2-3-2-3 to rotate relative to the short cylinder-end head support base column 2-3-2-16 or the short cylinder-end head support base 2-3-1.

[0034] In this embodiment, the rotary gear 2-3-2-1 can be arranged near the upper end of the short cylinder-head support base column 2-3-2-16, and the driving gear mechanism 2-3-2-2 is arranged near the lower end of the short cylinder-head support column 2-3-2-3.

[0035] like Figure 2 As shown, according to one embodiment of the present invention, in addition to the short-barrel-short-barrel girth welding internal support module 2-2 and the short-barrel-end cap girth welding internal support module 2-3, the welding system further includes a ground rail 2-4. The short-barrel-short-barrel girth welding internal support module 2-2 and the short-barrel-end cap girth welding internal support module 2-3 can move along the ground rail 2-4 to reach a predetermined welding station.

[0036] In this embodiment, the lower end surface of the short cylinder-end support base 2-3-1 can be provided with a through hole and a guide rail drive motor, and the through hole is adapted to the ground rail 2-4. The guide rail drive motor is started, and the short cylinder-end support base 2-3-1 moves along the ground rail 2-4 to the welding station.

[0037] like Figure 6 and 7 As shown, according to one embodiment of the present invention, in addition to the girth welding internal support module 2, the welding system also includes a girth welding external clamping module 3, which is used to clamp the butt girths between short tubes and short tubes, and the butt girths between short tubes and heads.

[0038] In this embodiment, the annular seam welding external clamping module 3 and the annular seam welding internal support module 2 cooperate to clamp the annular seam to complete the annular seam welding between the head and the short cylinder, the short cylinder and the short cylinder, or the (sealing box) short cylinder and the head.

[0039] like Figure 8As shown, according to one embodiment of the present invention, the short-tube-short-tube support module includes a central axis 2-2-1-1, and the short-tube-short-tube inner support module 2-2-1 includes a rotating rod 2-2-1-2. The two ends of the rotating rod are respectively connected to the central axis 2-2-1-1 and the short-tube-short-tube inner support block 2-2-1-3, and the rotating rod 2-2-1-2 can rotate around the central axis 2-2-1-1 to drive the short-tube-short-tube inner support block 2-2-1-3 to rotate.

[0040] In this embodiment, the central axis 2-2-1-1 can be driven by a motor (or the central axis 2-2-1-1 is a motor) to drive the short cylinder-short cylinder inner support module 2-2-1 to rotate circumferentially around the central axis 2-2-1-1. The short cylinder-short cylinder inner support block 2-2-1-3 can be a non-full circle, for example, the circumferential length of the short cylinder-short cylinder inner support block 2-2-1-3 can be 1 / X of the inner circumference of the short cylinder, and X can be 3 to 12.

[0041] According to one embodiment of the present invention, the short-barrel-short-barrel support module includes a short-barrel-short-barrel support base 2-2-3, a short-barrel-short-barrel support column 2-2-2 and a short-barrel-short-barrel support disk 2-2-4. A plurality of short-barrel-short-barrel support columns 2-2-2 are arranged along the circumferential direction of the short-barrel-short-barrel support base 2-2-3, and the short-barrel-short-barrel support columns 2-2-2 are used to support the short-barrel-short-barrel support disk 2-2-4. The short-barrel-short-barrel support disk 2-2-4 is used to place the short-barrel-short-barrel inner support module 2-2-1. A central axis 2-2-1-1 is arranged in the middle of the short-barrel-short-barrel support disk 2-2-4, and the short-barrel-short-barrel inner support module 2-2-1 can rotate along the circumferential direction of the short-barrel-short-barrel support disk 2-2-4 to support the butt joint annular seam between the short barrels.

[0042] In this embodiment, the lower end surface of the short-short-barrel support base 2-2-3 can be provided with a through hole and a guide rail drive motor adapted to the ground rail 2-4, so that the short-short-barrel support base 2-2-3 can move along the ground rail 2-4. The short-short-barrel support column 2-2-2 and the short-short-barrel support base 2-2-3 can be fixed by welding or screw indentation. The short-short-barrel support column 2-2-2 can include a central column arranged on the short-short-barrel support base 2-2-3 and 6 symmetrical point secondary balance columns evenly arranged along the circumferential direction of the short-short-barrel support base 2-2-3.

[0043] The rotating rod 2-2-1-2 can be provided with a driving cylinder (such as a cylinder), and the two ends of the driving cylinder are respectively connected to the central axis 2-2-1-1 (motor) and the short cylinder-short cylinder inner support block 2-2-1-3. The driving cylinder is telescopic to drive the short cylinder-short cylinder inner support block 2-2-1-3 to approach or move away from the annular seam, so as to facilitate loading and unloading or tighten the annular seam. The contact surface between the short cylinder-short cylinder inner support block 2-2-1-3 and the short cylinder can be a contoured arc surface that fits the inner side of the short cylinder, and the radius of the arc surface is equal to the inner diameter of the short cylinder. The circumference of the arc surface of the short cylinder-short cylinder inner support block 2-2-1-3 can be 1~3m, and the width can be 50~200mm.

[0044] like Fig. 9 As shown, according to one embodiment of the present invention, a short cylinder-short cylinder protective gas inlet 2-2-1-3-3 can be provided on the upper end surface of the short cylinder-short cylinder inner support block 2-2-1-3, and a short cylinder-short cylinder arcuate gas protection groove 2-2-1-3-1 is provided on the contact surface between the short cylinder-short cylinder inner support block 2-2-1-3 and the short cylinder along its circumferential direction, and the short cylinder-short cylinder protective gas inlet 2-2-1-3-3 is connected with the short cylinder-short cylinder arcuate gas protection groove 2-2-1-3-1 to provide protective gas to the butt annular seam between the short cylinders.

[0045] In this embodiment, the upper end surface of the short-tube-short-tube inner support block 2-2-1-3 can be provided with a plurality of short-tube-short-tube protective gas inlets 2-2-1-3-3 along its length direction. The groove width of the short-tube-short-tube arc-shaped gas protection groove 2-2-1-3-1 can be 5-20 mm, and the groove depth can be 20-50 mm.

[0046] According to one embodiment of the present invention, a short-tube-short-tube rolling support surface 2-2-1-3-2 may be provided along the circumferential direction of the contact surface between the short-tube-short-tube inner support block 2-2-1-3 and the short-tube. When rolling the annular seam between the short-tubes, the short-tube-short-tube rolling support surface 2-2-1-3-2 is used to support the annular seam.

[0047] In this embodiment, the short-tube-short-tube rolling support surface 2-2-1-3-2 can be set 100mm below the short-tube-short-tube arc-shaped gas protection groove 2-2-1-3-1, and the width of the short-tube-short-tube rolling support surface 2-2-1-3-2 can be 20-60mm. The short-tube-short-tube rolling support surface 2-2-1-3-2 can be embedded in the short-tube-short-tube inner support block 2-2-1-3 using hard alloy as a base material.

[0048] like Figure 4 and 5As shown, according to one embodiment of the present invention, the short cylinder-end cap internal support module includes a first drive link 2-3-2-5, a connecting arm 2-3-2-7 and a short cylinder-end cap internal support block 2-3-2-13, and the two ends of the connecting arm 2-3-2-7 are respectively connected to the short cylinder-end cap support column 2-3-2-3 and the short cylinder-end cap internal support block 2-3-2-13. The short cylinder-end cap internal support block 2-3-2-13 is used to support the butt joint annular seam between the short cylinder and the end cap. One end of the first drive link 2-3-2-5 is connected to the short cylinder-end cap support column 2-3-2-3 through the first screw slider 2-3-2-4, and the other end of the first drive link 2-3-2-5 is connected to the free end of the connecting arm 2-3-2-7. The first screw slider 2-3-2-4 can slide along the axial direction of the short cylinder-head support column 2-3-2-3, and the first driving connecting rod 2-3-2-5 can be retracted to drive the connecting arm 2-3-2-7 to rotate.

[0049] In this embodiment, one end of the connecting arm 2-3-2-7 is rotatably connected to the short cylinder-end support column 2-3-2-3. The short cylinder-end support column 2-3-2-3 is provided with a first screw rod along its axial direction, and the first screw rod slider 2-3-2-4 moves along the first screw rod, and cooperates with the first driving connecting rod 2-3-2-5 to push the connecting arm 2-3-2-7 to perform an opening and closing arc movement around the short cylinder-end support column 2-3-2-3. The connecting arm 2-3-2-7 can be rotatably connected to the top of the short cylinder-end support column 2-3-2-3. The first driving connecting rod 2-3-2-5 can be a cylinder. The end face of the short cylinder-end inner support block 2-3-2-13 in contact with the short cylinder or the end can be an arc surface or a cylindrical surface, and the radius of the arc surface is equal to the radius of the inner surface of the short cylinder. The short cylinder-end cap inner support block 2-3-2-13 can be a non-full circle. For example, the circumferential length of the short cylinder-end cap inner support block 2-3-2-13 can be 1 / X of the inner circumference of the short cylinder, and X can be 3 to 12. For example, the arc length of the arc surface of the short cylinder-end cap inner support block 2-3-2-13 can be 1 to 3m, and the width is 50 to 200mm. After the short cylinder-end cap inner support module is folded and contracted, the overall volume and space occupied are approximately 1 / X of the space occupied by the full-circle inner support tooling, which can reduce the complexity and cost of the system.

[0050] According to one embodiment of the present invention, a first ejection cylinder 2-3-2-6 is disposed on the side of the short cylinder-end support column 2-3-2-3. The first ejection cylinder 2-3-2-6 ejects, cooperates with the first screw slider 2-3-2-4 and the first driving connecting rod 2-3-2-5, and pushes the connecting arm 2-3-2-7 to rotate.

[0051] In this embodiment, for example, when the connecting arm 2-3-2-7 is substantially in contact with or parallel to the short cylinder-end support column 2-3-2-3, the first ejection cylinder 2-3-2-6 is ejected, and cooperates with the first screw slider 2-3-2-4 and the first driving connecting rod 2-3-2-5 to push the connecting arm 2-3-2-7 to rotate, thereby realizing the opening of the connecting arm 2-3-2-7. The first ejection cylinder 2-3-2-6 can be an electric drive cylinder. The first ejection cylinder 2-3-2-6 can be installed on the side of the short cylinder-end support column 2-3-2-3 by screws.

[0052] According to one embodiment of the present invention, in addition to the first driving connecting rod 2-3-2-5, the connecting arm 2-3-2-7 and the short cylinder-end cap inner support block 2-3-2-13, the short cylinder-end cap inner support module also includes a connecting rod 2-3-2-10. The two ends of the connecting rod 2-3-2-10 are respectively used to connect the free end of the connecting arm 2-3-2-7 and the short cylinder-end cap inner support block 2-3-2-13, and the connecting rod 2-3-2-10 can rotate around the connecting arm 2-3-2-7 (for example, it can rotate in the plane where the axis of the connecting arm 2-3-2-7 is located) to make the short cylinder-end cap inner support block 2-3-2-13 close to or away from the butt joint annular gap between the short cylinder and the end cap.

[0053] In this embodiment, one end of the connecting rod 2-3-2-10 can be connected to the free end of the connecting arm 2-3-2-7 through a pin, and the connecting rod 2-3-2-10 can rotate around the pin (i.e., perform circular motion) to achieve the opening and closing of the connecting arm 2-3-2-7 and the connecting rod 2-3-2-10. Fig.10 and 11 As shown, the connecting rod 2-3-2-10 can be L-shaped.

[0054] According to one embodiment of the present invention, the short cylinder-end support module further includes a second connecting rod 2-3-2-9. One end of the second connecting rod 2-3-2-9 is connected to the connecting arm 2-3-2-7 through a second screw slider 2-3-2-8, and the other end of the second connecting rod 2-3-2-9 is connected to the free end of the connecting rod 2-3-2-10. The second screw slider 2-3-2-8 can slide along the axial direction of the connecting arm 2-3-2-7 to drive the connecting rod 2-3-2-10 to rotate.

[0055] In this embodiment, the connecting arm 2-3-2-7 is provided with a second screw rod along its axial direction, and the second screw rod slider 2-3-2-8 moves along the second screw rod, driving the second connecting rod 2-3-2-9 to push or pull the connecting rod 2-3-2-10 to rotate, so as to realize the opening and closing of the connecting arm 2-3-2-7 and the connecting rod 2-3-2-10. The two ends of the second connecting rod 2-3-2-9 can be connected to the second screw rod slider 2-3-2-8 and the connecting rod 2-3-2-10 respectively through pins. The foldable column module can drive the connecting arm 2-3-2-7 and the connecting rod 2-3-2-10 to rotate through the first driving connecting rod 2-3-2-5 and the second connecting rod 2-3-2-9, thereby realizing the folding and unfolding of the foldable column module 2-3-2.

[0056] According to one embodiment of the present invention, a second ejection cylinder 2-3-2-14 is disposed on the side of the connecting arm 2-3-2-7. The second ejection cylinder 2-3-2-14 ejects and cooperates with the second screw slider 2-3-2-8 and the second connecting rod 2-3-2-9 to push the connecting rod 2-3-2-10 to rotate.

[0057] In this embodiment, for example, when the connecting rod 2-3-2-10 is substantially in contact with or parallel to the connecting arm 2-3-2-7, the second ejection cylinder 2-3-2-14 is ejected, and cooperates with the second screw slider 2-3-2-8 and the second connecting rod 2-3-2-9 to push the connecting rod 2-3-2-10 to rotate, thereby realizing the opening of the connecting rod 2-3-2-10. The second ejection cylinder 2-3-2-14 can be an electric drive cylinder. The second ejection cylinder 2-3-2-14 can be installed on the side of the connecting arm 2-3-2-7 by screws.

[0058] like Fig.10 As shown, support rods 2-3-2-11 are respectively arranged on both sides of the connecting rod 2-3-2-10, and the support rods 2-3-2-11 are used to tighten the inner side surface of the short tube-head inner support block 2-3-2-13.

[0059] In this embodiment, for example, when the outer side surface of the short cylinder-end cap inner support block 2-3-2-13 is pressed against the short cylinder skin, the support rod 2-3-2-11 is pressed against the inner side surface of the short cylinder-end cap inner support block 2-3-2-13, providing internal support and positioning to the short cylinder-end cap inner support block 2-3-2-13. Support rods 2-3-2-11 are respectively arranged on both sides of the connecting rod 2-3-2-10, which can provide more uniform internal support to the short cylinder-end cap inner support block 2-3-2-13, improve the rigidity of the system, and at the same time, can improve the ability of the short cylinder-end cap inner support block 2-3-2-13 to withstand radial pressure, making the support more stable. The support rod 2-3-2-11 can be a cylinder support rod. The support rod 2-3-2-11 is rotatably connected to the connecting rod 2-3-2-10.

[0060] like Fig.12 As shown, according to one embodiment of the present invention, the connecting rod 2-3-2-10 is provided with a retraction cylinder 2-3-2-15 connected to the support rod 2-3-2-11, and the retraction cylinder 2-3-2-15 is retracted to allow the retraction cylinder 2-3-2-15 to rotate closer to or away from the connecting support rod 2-3-2-11.

[0061] In this embodiment, the retracting cylinder 2-3-2-15 is telescopically controlled to rotate the retracting cylinder 2-3-2-15 close to or away from the connecting support rod 2-3-2-11 to realize the opening and closing of the support rod 2-3-2-11. The retracting cylinder 2-3-2-15 can be a cylinder. The retracting cylinder 2-3-2-15 can be arranged in the connecting rod 2-3-2-10.

[0062] like Fig.14 As shown, according to one embodiment of the present invention, a two-axis connecting rod 2-3-2-12 is provided at the free end of the connecting rod 2-3-2-10, and a short cylinder-end support block 2-3-2-13 is provided at the end of the two-axis connecting rod 2-3-2-12 away from the connecting rod 2-3-2-10. The two-axis connecting rod 2-3-2-12 can rotate relative to the connecting rod 2-3-2-10 along its axial direction to drive the short cylinder-end support block 2-3-2-13 to rotate.

[0063] In this embodiment, a first motor 2-3-2-12-1 may be provided at the end of the connecting rod 2-3-2-10 for connecting the two-axis connecting rod 2-3-2-12. The first motor 2-3-2-12-1 is used to drive the two-axis connecting rod 2-3-2-12 and the short cylinder-head inner support block 2-3-2-13 to rotate around the axial direction of the connecting rod 2-3-2-10.

[0064] According to one embodiment of the present invention, a rotating shaft 2-3-2-12-3 perpendicular to the axial direction of the two-axis connecting rod 2-3-2-12 is arranged at the end away from the connecting rod 2-3-2-10, and the short cylinder-end cap inner support block 2-3-2-13 is fixedly connected to the rotating shaft 2-3-2-12-3. The rotating shaft 2-3-2-12-3 rotates, driving the short cylinder-end cap inner support block 2-3-2-13 to rotate around the two-axis connecting rod 2-3-2-12 in the plane where the axis of the two-axis connecting rod 2-3-2-12 is located.

[0065] In this embodiment, the two-axis connecting rod 2-3-2-12 can be provided with a second motor 2-3-12-2 connected to the rotating shaft 2-3-2-12-3, and the second motor 2-3-12-2 is used to drive the rotating shaft 2-3-2-12-3 to rotate around its axial direction, so as to drive the short cylinder-end support block 2-3-2-13 to rotate around the two-axis connecting rod 2-3-2-12 in the plane where the axis of the two-axis connecting rod 2-3-2-12 is located. The first motor 2-3-2-12-1 and the second motor 2-3-12-2 cooperate to realize the opening and closing of the short cylinder-end support block 2-3-2-13 and the connecting rod 2-3-2-10. The welding system further reduces the occupied volume and space through multi-degree-of-freedom folding.

[0066] like Fig.15 As shown, according to one embodiment of the present invention, a short cylinder-head protective gas inlet 2-3-2-13-3 can be provided on the upper end surface of the short cylinder-head inner support block 2-3-2-13, and a short cylinder-head arc-shaped gas protection groove 2-3-2-13-2 is provided on the contact surface between the short cylinder-head inner support block 2-3-2-13 and the short cylinder along its circumferential direction, and the short cylinder-head protective gas inlet 2-3-2-13-3 is connected with the short cylinder-head arc-shaped gas protection groove 2-3-2-13-2 to provide protective gas to the butt annular seam between the short cylinder and the head.

[0067] In this embodiment, the upper end surface of the short cylinder-end inner support block 2-3-2-13 can be provided with a plurality of short cylinder-end protective gas inlets 2-3-2-13-3 along its length direction. The groove width of the short cylinder-end arc-shaped gas protection groove 2-3-2-13-2 can be 5-20 mm, and the groove depth can be 20-50 mm. The short cylinder-end arc-shaped gas protection groove 2-3-2-13-2 can be 100 mm away from the upper end surface of the short cylinder-end inner support block 2-3-2-13.

[0068] According to one embodiment of the present invention, an arc-shaped inner support copper steel plate can be provided on the contact surface between the short cylinder-end head inner support block 2-3-2-13 and the short cylinder to prevent splashing objects from adhering to the short cylinder-end head inner support block 2-3-2-13.

[0069] In this embodiment, the arc-shaped inner supporting copper steel plate can be arranged around the short cylinder-head arc-shaped gas protection groove 2-3-2-13-2.

[0070] According to one embodiment of the present invention, the contact surface between the short cylinder-end cap inner support block 2-3-2-13 and the short cylinder is provided with a short cylinder-end cap rolling support surface 2-3-2-13-1 along its circumferential direction. When rolling the annular seam between the short cylinder and the end cap, the short cylinder-end cap rolling support surface 2-3-2-13-1 is used to support the annular seam.

[0071] In this embodiment, the short cylinder-end head rolling support surface 2-3-2-13-1 can be set 50mm below the short cylinder-end head arc-shaped gas protection groove 2-3-2-13-2, and the width of the short cylinder-end head rolling support surface 2-3-2-13-1 can be 20-60mm. The short cylinder-end head rolling support surface 2-3-2-13-1 can be embedded in the short cylinder-end head inner support block 2-3-2-13 using a steel plate or a cemented carbide as a base material.

[0072] like Fig.16 and 17 As shown, according to one embodiment of the present invention, in addition to the girth welding inner support module 2, the welding system further comprises a welding module 4. The welding module 4 comprises a welding head 4-2 for welding the girth.

[0073] In this embodiment, the welding head 4 - 2 may be a laser welding head.

[0074] According to an embodiment of the present invention, in addition to the welding head 4-2, the welding module 4 further includes a frame column 4-1. The welding head 4-2 is mounted on the frame column 4-1 and can slide relative to the frame column 4-1 in multiple directions.

[0075] According to one embodiment of the present invention, a third screw rod is provided along the axial direction of the frame column 4-1, and a third screw rod slider is provided on the third screw rod. The third screw rod slider is provided with a connecting plate perpendicular to the frame column 4-1, and a radial guide rail is provided on the connecting plate. The welding head 4-2 can be slidably provided relative to the radial guide rail to approach or move away from the annular seam to be welded. The third screw rod slider can be slidably provided along the axial direction of the third screw rod to drive the welding head 4-2 to move along the axial direction of the frame column 4-1.

[0076] Furthermore, the radial guide rail is provided with an electric-driven slider, and the welding head 4-2 is installed on the electric-driven slider.

[0077] According to one embodiment of the present invention, the welding head 4-2 is provided with clamping wheels 4-4 on both sides thereof along the welding direction, and the clamping wheels 4-4 are used to clamp the edges to be welded.

[0078] In this embodiment, the clamping wheel 4 - 4 clamps the edge to be welded before welding, which can eliminate the misalignment of the weld and perform shaping before welding.

[0079] According to one embodiment of the present invention, in addition to the welding head 4-2, the welding module 4 further includes a rolling mechanism 4-3, and the rolling mechanism 4-3 is used to roll the annular seam after welding.

[0080] The welding system of this embodiment can roll and level the weld after welding is completed through the rolling mechanism 4-3.

[0081] Furthermore, the rolling mechanism 4-3 is installed on an electrically driven slider to move closer to or away from the annular seam to be welded.

[0082] According to one embodiment of the present invention, the annular seam welding external clamping module 3 includes a clamping mechanism frame 3-1, the clamping mechanism frame 3-1 is provided with a clamping cylinder 3-2 and a clamping block 3-3, and the clamping cylinder 3-2 and the clamping block 3-3 are fixedly connected. The clamping cylinder 3-2 is retractable to drive the clamping block 3-3 to clamp the annular seam.

[0083] In this embodiment, the clamping cylinder 3-2 can be a cylinder, and the clamping block 3-3 is installed on the driving rod of the clamping cylinder 3-2. The contact surface between the clamping block 3-3 and the annular seam can be an arc surface, and the radius of the arc surface is equal to the outer radius of the short cylinder. The clamping block 3-3 can be an electromagnetic clamping block. For example, when the annular seam is rolled, the power supply of the electromagnetic clamping block is started to provide suction for the electromagnetic clamping block, and the suction can act on the short cylinder-short cylinder inner support block 2-2-1-3 or the short cylinder-end head inner support block 2-3-2-13, and provide suction support while the clamping block 3-3 compresses the annular seam. The suction of the electromagnetic clamping block cooperates with the internal support of the connecting rod 2-3-2-10, the support rod 2-3-2-11 and the short cylinder-end head inner support block 2-3-2-13, which can effectively solve the problem that the rolling force acting on the short cylinder-end head inner support block 2-3-2-13 easily causes the support to become unstable. The welding system can provide tensile force, which can offset most of the rolling force during rolling, ensuring that the rolling force acting on the short tube-short tube inner support block 2-2-1-3 or the short tube-head inner support block 2-3-2-13 is within a preset range, reducing the rigidity requirements for the welding system and making the structure more compact.

[0084] The clamping mechanism frame 3-1 can be provided with multiple groups of clamping cylinders 3-2 and clamping blocks 3-3. For example, multiple groups of clamping cylinders 3-2 and clamping blocks 3-3 can be evenly arranged along the length direction of the clamping mechanism frame 3-1. The clamping mechanism frame 3-1 can be provided with two symmetrical rows of clamping cylinders 3-2 and clamping blocks 3-3, which are respectively used to clamp the two sides of the butt joint annular seam. The vertical distance between the two rows of clamping cylinders 3-2 and clamping blocks 3-3 can be 40~80mm, providing avoidance space for welding and rolling.

[0085] like Fig.18 and 19As shown, according to one embodiment of the present invention, in addition to the clamping mechanism frame 3-1, the circumferential welded external clamping module 3 also includes an external clamping mechanism support column 3-4 and an external clamping mechanism support base 3-5. External clamping mechanism support columns 3-4 are respectively arranged at both ends of the external clamping mechanism support base 3-5, and external clamping mechanism mounting seats 3-6 are respectively arranged on the sides of the external clamping mechanism support columns 3-4 that are away from each other. The clamping mechanism frame 3-1 includes a clamping mechanism frame crossbeam 3-1-1, and clamping mechanism frame brackets 3-1-2 are respectively arranged at both ends of the clamping mechanism frame crossbeam 3-1-1. The clamping mechanism frame crossbeam 3-1-1 is used to install a clamping cylinder 3-2 and a clamping block 3-3. The two clamping mechanism frame brackets 3-1-2 of the clamping mechanism frame 3-1 are respectively placed on the corresponding external clamping mechanism mounting seats 3-6 to support the clamping mechanism frame 3-1.

[0086] In this embodiment, the external clamping mechanism support base 3-5 is an arc-shaped device adapted to the outer side surface of the short cylinder.

[0087] like Fig. 20 As shown, according to one embodiment of the present invention, the sides of the two outer clamping mechanism support columns 3-4 that are away from each other are respectively provided with fourth screw rods 3-9 along their axial directions. The fourth screw rod 3-9 is provided with a fourth slider that can slide along its axial direction, the clamping mechanism frame bracket 3-1-2 is fixedly connected to the fourth slider, and the fourth slider slides along the fourth screw rod 3-9 to drive the clamping mechanism frame 3-1 to move.

[0088] The welding system of this embodiment can drive the frame 3-1, the clamping cylinder 3-2 and the clamping block 3-3 of the annular seam welding clamping mechanism to move up and down in the vertical direction by moving the fourth slider along the axial direction of the fourth screw rod 3-9 to adapt to the height of the annular seams of the short tubes and the short tubes and the end caps, and clamp the annular seams. The axial direction of the external clamping mechanism support column 3-4 or the fourth slider along the fourth screw rod 3-9 is the vertical direction of the welding system in actual application.

[0089] Those skilled in the art will appreciate that, in order to ensure that the clamping mechanism support column 3-4 supports the clamping mechanism frame 3-1 more stably, multiple clamping mechanism support columns 3-4 can be set at both ends of the external clamping mechanism support base 3-5 (such as two clamping mechanism support columns 3-4 are set at both ends of the external clamping mechanism support base 3-5), and correspondingly, the clamping mechanism support columns 3-4 can be set with a fourth screw rod 3-9, a fourth slider and an external clamping mechanism mounting seat 3-6.

[0090] According to one embodiment of the present invention, the welding module 4 is disposed on the external clamping mechanism support base 3 - 5 and can move relative to the external clamping mechanism support base 3 - 5 along the welding direction of the annular seam.

[0091] like Fig.18 and 21 As shown, according to one embodiment of the present invention, between two external clamping mechanism support columns 3-4, the external clamping mechanism support base 3-5 is provided with a base circular arc bevel gear guide rail 3-7. Both ends of the base circular arc bevel gear guide rail 3-7 extend toward the external clamping mechanism support column 3-4 respectively. The welding module also includes a frame base 4-4, and the frame column 4-1 is arranged on the frame base 4-4. The lower end surface of the frame base 4-4 is provided with a driving bevel gear mechanism 4-5 meshing with the base circular arc bevel gear guide rail 3-7, and the driving bevel gear mechanism 4-5 can move along the base circular arc bevel gear guide rail 3-7 to drive the welding head to move, thereby realizing circumferential welding of the annular seam.

[0092] In this embodiment, the base arc helical gear guide rail 3-7 is an arc shape adapted to the outer side surface of the short tube. The driving helical gear mechanism 4-5 may include a driving motor and a gear. The driving motor drives the gear to rotate along the base arc helical gear guide rail 3-7, which can drive the welding module 4 to perform reciprocating circular arc motion to weld the annular seam along the circumferential direction of the short tube. The base arc helical gear guide rail 3-7 can be locked on the external clamping mechanism support base 3-5 by screws.

[0093] According to one embodiment of the present invention, the external clamping mechanism supports the base 3-5 to be provided with a base rail 3-8, and the lower end surface of the frame base 4-4 is provided with a guide wheel 4-6 corresponding to the base rail 3-8. The guide wheel 4-6 moves along the base rail 3-8 to provide guidance for the welding module 4 to move along the circumferential seam welding direction.

[0094] In this embodiment, the base rail 3-8 can be an arc shape that matches the outer side of the short tube, ensuring that the welding module 4 can make reciprocating arc motion along the base rail 3-8. The base rail 3-8 can be locked on the external clamping mechanism support base 3-5 by screws.

[0095] like Fig. 22 , 23 As shown in Figures 24, according to one embodiment of the present invention, in addition to the annular seam welding inner support module 2 and the welding module 4, the welding system also includes a welding support module 5. The welding support module 5 is used to support the welding module 4. The welding support module 5 includes an annular welding bottom guide rail 5-1, and the welding module 4 can move along the welding bottom guide rail 5-1 so that the welding module 4 rotates around the circumferential direction of the short barrel.

[0096] In this embodiment, the short cylinder, the head, the short cylinder-short cylinder annular seam welding inner support module 2-2 or the short cylinder-head annular seam welding inner support module 2-3 to be welded is placed in the middle of the welding support module 5 (i.e., the middle of the annular welding bottom guide rail 5-1), and the annular seam welding external pressure module 3 and the welding module are placed on the annular welding bottom guide rail 5-1. The annular seam welding external pressure module 3 and the welding module can rotate along the annular welding bottom guide rail 5-1 around the circumferential direction of the butt annular seam to weld the entire annular seam.

[0097] Furthermore, the welding support module 5 also includes a welding bottom support seat 5-2, and the welding bottom guide rail 5-1 is installed on the welding bottom support seat 5-2.

[0098] According to one embodiment of the present invention, the lower end surface of the external clamping mechanism support base 3-5 is provided with a limiting wheel 3-10 corresponding to the welding bottom guide rail 5-1. The limiting wheel 3-10 can move along the welding bottom guide rail 5-1.

[0099] In this embodiment, the limiting wheel 3-10 moves along the welding bottom guide rail 5-1, which can drive the annular seam welding external pressure module 3 and the welding module 4 to rotate around the circumferential direction of the short cylinder to press and weld the entire annular seam.

[0100] According to one embodiment of the present invention, the external clamping mechanism supporting base 3-5 is provided with a base driving mechanism 3-11. The base driving mechanism 3-11 cooperates with the limiting wheel 3-10 to drive the external clamping mechanism supporting base 3-5 to move along the welding bottom guide rail 5-1.

[0101] In this embodiment, the base drive mechanism 3-11 can be composed of a motor and a roller. The welding bottom guide rail 5-1 can be a double-track structure, and accordingly, the external clamping mechanism supporting base 3-5 can be provided with multiple sets of base drive mechanisms 3-11 and limit wheels 3-10 (such as four sets).

[0102] According to one embodiment of the present invention, the welding bottom support seat 5-2 is provided with a guardrail 5-3. The guardrail 5-3 is provided at the periphery of the welding bottom guide rail 5-1.

[0103] In this embodiment, the guardrail 5-3 can prevent welding residues from splashing.

[0104] According to an embodiment of the present invention, the auxiliary rack 1 is provided with an auxiliary rack base 1-1 and an auxiliary rack column 1-2. The welding support module 5 is provided on the auxiliary rack column 1-2 and can slide along the axial direction of the auxiliary rack column 1-2.

[0105] In this embodiment, for example, an auxiliary frame column 1-2 may be provided along the circumferential direction or around the auxiliary frame base 1-1, and the welding support module 5 is provided between the four auxiliary frame columns 1-2. For example, the welding bottom support seat 5-2 is slidably connected to the four auxiliary frame columns 1-2 to drive the annular seam welding external pressure module 3 and the welding module 4 to move in the vertical direction. The welding system can realize the multi-directional movement of the welding head 4-2 and realize the all-round and multi-angle precision welding of welds of different heights and positions by moving the frame base 4-4 along the base arc bevel gear guide rail 3-7, the external clamping mechanism support base 3-5 along the welding bottom guide rail 5-1, the welding bottom support seat 5-2 along the auxiliary frame column 1-2, and the welding head 4-2 along the radial guide rail.

[0106] According to one embodiment of the present invention, the auxiliary frame column 1-2 may be a screw column, and the welding bottom support seat 5-2 may be slidably connected to the screw column via a slider.

[0107] In the circumferential seam welding process of the stainless steel rocket tank assembly, first, the short barrel or the upper head is hoisted at the auxiliary frame, and the short barrel-short barrel circumferential seam welding internal support module carries another section of the short barrel to the welding station (i.e., the auxiliary frame), and docks with the hoisted short barrel or the upper head. The welding bottom support seat 5-2 is moved along the auxiliary frame column 1-2 in the vertical direction to the circumferential seam for welding and weld rolling; the welding of the remaining short barrels is completed in sequence, and the welded barrel section is hoisted, and the short barrel-head circumferential seam welding internal support module 2-3 carries the lower head to the welding station, and docks with the hoisted barrel section, and the welding bottom support seat 5-2 is moved along the auxiliary frame column 1-2 in the vertical direction to the circumferential seam for welding and weld rolling.

[0108] like Fig.24 As shown, during the welding process of the butt-joint annular seam between the lower head and the short cylinder, only part of the foldable column modules of the short cylinder-head annular seam welding inner support module 2-3 can be inserted from the head manhole into the short cylinder or the head to support the butt-joint annular seam between the short cylinder and the head.

[0109] The above-mentioned embodiments of the present invention can be combined with each other and have corresponding technical effects.

[0110] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A welding system for the annular seam of a stainless steel rocket tank assembly, characterized in that: include: Short-tube-short-tube girth welding internal support module and short-tube-head girth welding internal support module; The short-tube-short-tube annular seam welding inner support module comprises a short-tube-short-tube support module and a short-tube-short-tube inner support module, and the short-tube-short-tube support module is used to support the short-tube-short-tube inner support module; The short-tube-short-tube inner support module can rotate along the circumferential direction of the short-tube-short-tube support module to support the butt joint annular seam between the short tubes; The short cylinder-head annular seam welding internal support module includes a short cylinder-head support base and a foldable column module, and the short cylinder-head support base is used to support the foldable column module; the foldable column module includes a short cylinder-head support column and a short cylinder-head internal support module, and the short cylinder-head internal support module can rotate around the short cylinder-head support column to make the free end of the short cylinder-head internal support module approach or move away from the short cylinder-head support column; the foldable column module can rotate around the circumferential direction of the short cylinder-head support base to drive the short cylinder-head internal support module to rotate around the circumferential direction of the short cylinder-head support base to support the butt annular seam between the short cylinder and the head.

2. The welding system according to claim 1, characterized in that It also includes an auxiliary frame for lifting the storage tank, cooperating with the short-tube-short-tube girth welding inner support module and the short-tube-head girth welding inner support module to perform butt joint and girth welding of short tubes and short tubes and heads.

3. The welding system according to claim 1, characterized in that It also includes a ground rail; the short cylinder-short cylinder annular seam welding internal support module and the short cylinder-head annular seam welding internal support module can move along the ground rail to reach a predetermined welding position.

4. The welding system according to claim 1, characterized in that It also includes an annular seam welding external compression module, which is used to compress the annular seams between the short tubes and the annular seams between the short tubes and the head.

5. The welding system according to claim 1, characterized in that The short-tube-short-tube support module includes a central axis, and the short-tube-short-tube inner support module includes a rotating rod; two ends of the rotating rod are respectively connected to the central axis and the short-tube-short-tube inner support block, and the rotating rod can rotate around the central axis.

6. The welding system according to claim 1, characterized in that: The short cylinder-end head internal support module includes a first driving connecting rod, a connecting arm and a short cylinder-end head internal support block, and the two ends of the connecting arm are respectively connected to the short cylinder-end head support column and the short cylinder-end head internal support block; the short cylinder-end head internal support block is used to support the butt annular seam between the short cylinder and the end head; one end of the first driving connecting rod is connected to the short cylinder-end head support column through a first screw slider, and the other end of the first driving connecting rod is connected to the free end of the connecting arm; the first screw slider can slide along the axial direction of the short cylinder-end head support column, and the first driving connecting rod can be retracted to drive the connecting arm to rotate.

7. The welding system according to claim 6, characterized in that The short cylinder-end head internal support module also includes a connecting rod; the two ends of the connecting rod are respectively used to connect the free end of the connecting arm and the short cylinder-end head internal support block, and the connecting rod can rotate around the connecting arm on the connecting arm to make the short cylinder-end head internal support block approach or move away from the butt joint annular gap between the short cylinder and the end head.

8. The welding system according to claim 1, characterized in that It also includes a welding module; the welding module includes a welding head for welding the annular seam.

9. The welding system according to claim 4, characterized in that: The annular seam welding external clamping module comprises a clamping mechanism frame, the clamping mechanism frame is provided with a clamping cylinder and a clamping block, the clamping cylinder and the clamping block are fixedly connected; the clamping cylinder is retractable to drive the clamping block to clamp the annular seam.

10. The welding system according to claim 8, characterized in that It also includes a welding support module, which is used to support the welding module; the welding support module includes an annular welding bottom guide rail, and the welding module can move along the welding bottom guide rail to allow the welding module to rotate around the circumferential direction of the short cylinder.

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