Welding system applied to stainless steel rocket tank assembly circular seam

Abstract

The utility model 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 utility model relates to the field of carrier rocket, concretely relates to the welding system for the ring joint of stainless steel rocket tank assembly. BACKGROUND

[0002] In the manufacturing process of the existing large-diameter stainless steel rocket tank, the ring joint welding of the stainless steel tank assembly mostly adopts a whole circular inner support tooling, and the manufacturing link has the following difficulties: first, the whole circular inner support tooling needs to be clamped once, and the welding of the whole rotary circular ring joint needs to be completed once; second, the whole circular inner support tooling cannot be directly applied to the ring joint welding of the head and the cylinder segment after clamping, and needs to be installed in the cylinder segment or the head, and is disassembled after the welding is completed, and then is taken out from the manhole of the head, so that the whole process is complicated, the process control is difficult, and the weld cannot be leveled.

[0003] In order to simplify the ring joint welding process of the stainless steel tank assembly, realize the stable and controllable welding process, and improve the welding quality, it is particularly important to design the welding system for the ring joint of the stainless steel rocket tank assembly. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at overcoming the defects of the prior art, and provides the welding system for the ring joint of the stainless steel rocket tank assembly.

[0005] The utility model provides a welding system for the ring joint of the stainless steel rocket tank assembly, which comprises a short cylinder-short cylinder ring joint welding inner support module and a short cylinder-head ring joint welding inner support module; the short cylinder-short cylinder ring joint welding inner support module comprises a short cylinder-short cylinder support module and a short cylinder-short cylinder inner support module, and the short cylinder-short cylinder support module is used for supporting the short cylinder-short cylinder inner support module; the short cylinder-short cylinder inner support module can rotate along the circumferential direction of the short cylinder-short cylinder support module to support the butt joint ring joint of the short cylinder and the short cylinder; the short cylinder-head ring joint welding inner support module comprises a short cylinder-head support base and a foldable column module, and the short cylinder-head support base is used for supporting the foldable column module; the foldable column module comprises a short cylinder-head support column and a short cylinder-head inner support module, and the short cylinder-head inner support module can rotate around the short cylinder-head support column to make the free end of the short cylinder-head inner support module close to or 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 inner support module to rotate around the circumferential direction of the short cylinder-head support base and support the butt joint ring joint of the short cylinder and the head.

[0006] According to one embodiment of the utility model, still include auxiliary frame, be used for hoisting storage box, cooperate short cylinder - short cylinder ring seam welding inner support module and short cylinder - head ring seam welding inner support module, short cylinder and short cylinder, short cylinder and head butt joint and butt joint ring seam welding.

[0007] According to one embodiment of the utility model, still include ground rail, short cylinder - short cylinder ring seam welding inner support module and short cylinder - head ring seam welding inner support module can move along ground rail, to reach predetermined welding station.

[0008] According to one embodiment of the utility model, still include ring seam welding outer pressure module, be used for the butt joint ring seam of short cylinder and short cylinder, the butt joint ring seam of short cylinder and head is pressed tightly.

[0009] According to one embodiment of the utility model, short cylinder - short cylinder support module includes center shaft, short cylinder - short cylinder inner support module includes rotating rod, rotating rod two ends are connected center shaft and short cylinder - short cylinder inner support block respectively, rotating rod can rotate around center shaft.

[0010] According to one embodiment of the utility model, short cylinder - head inner support module includes first drive connecting rod, connecting arm and short cylinder - head inner support block, connecting arm two ends are connected short cylinder - head support column and short cylinder - head inner support block respectively, short cylinder - head inner support block is used for supporting the butt joint ring seam of short cylinder and head, first drive connecting rod one end is connected short cylinder - head support column through first screw rod slider, the other end of first drive connecting rod is connected with the free end of connecting arm, first screw rod slider can slide along the axial direction of short cylinder - head support column, first drive connecting rod can be telescopic, to drive connecting arm rotation.

[0011] According to one embodiment of the utility model, short cylinder - head inner support module still includes connecting rod, connecting rod two ends are used for connecting the free end of connecting arm and short cylinder - head inner support block respectively, connecting rod can revolve around connecting arm, to make short cylinder - head inner support block close or away from the butt joint ring seam of short cylinder and head.

[0012] According to one embodiment of the utility model, still include welding module, welding module includes welding head, is used for welding ring seam.

[0013] According to one embodiment of the utility model, ring seam welding outer pressure module includes pressure mechanism frame, pressure mechanism frame sets up pressure cylinder and pressure block, pressure cylinder and pressure block fixed connection, pressure cylinder can be telescopic, to drive pressure block pressure ring seam.

[0014] According to one embodiment of the present invention, a welding support module is further included; 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 can rotate around the circumferential direction of the short cylinder.

[0015] According to the present invention, a welding system for the circumferential seams of stainless steel rocket propellant tank assemblies is used to support the circumferential seams of the short cylinder-to-short cylinder circumferential seam welding and the short cylinder-to-head circumferential seam welding, respectively. The system supports the circumferential seams of the short cylinder-to-short cylinder and the short cylinder-to-head circumferential seam welding, respectively. All circumferential seams of the assembly are welded in sections, eliminating the need for weld seam tracking and simplifying the circumferential seam welding process of the stainless steel propellant tank assembly.

[0016] It should be understood that the above general description and the following specific embodiments are merely exemplary and illustrative, and do not limit the scope of the present invention. Attached Figure Description

[0017] The accompanying drawings are part of the specification of this utility model and illustrate exemplary embodiments of the utility model. The drawings, together with the description in the specification, are used to illustrate the principles of the utility model.

[0018] Figure 1 This is a perspective view of a welding system applied to the circumferential seam of a stainless steel rocket propellant tank assembly, according to an embodiment of the present invention.

[0019] Figure 2 This is a perspective view of a welding system applied to the circumferential seam of a stainless steel rocket propellant tank assembly, according to an embodiment of the present invention.

[0020] Figure 3 This is a perspective view of a short-cylinder-head circumferential welded inner support module according to an embodiment of the present invention;

[0021] Figure 4 This is an unfolded view of the short-cylinder-head circumferential welded inner support module according to one embodiment of the present invention;

[0022] Figure 5 This is a folded diagram of a short-cylinder-head circumferential welded inner support module according to one embodiment of the present invention;

[0023] Figure 6 This is a combined diagram of the circumferential weld external clamping module and the welding module according to one embodiment of the present invention;

[0024] Figure 7 This is a perspective view of an embodiment of the circumferential welded external clamping module of this utility model;

[0025] Figure 8 This is a perspective view of a short-cylinder-short-cylinder circumferential welded inner support module according to an embodiment of the present invention;

[0026] Figure 9 is a perspective view of a short cylinder-short cylinder inner support block of an embodiment of the present utility model;

[0027] Figure 10 is a partial perspective view of a short cylinder-head ring seam welding inner support module of an embodiment of the present utility model;

[0028] Figure 11 is a side view of Figure 10 ;

[0029] Figure 12 is a top view of Figure 10 ;

[0030] Figure 13 is a side view of Figure 10 ;

[0031] Figure 14 is a partial perspective view of a short cylinder-head ring seam welding inner support module of an embodiment of the present utility model;

[0032] Figure 15 is a perspective view of a short cylinder-head inner support block of an embodiment of the present utility model;

[0033] Figure 16 is a perspective view of a welding module of an embodiment of the present utility model;

[0034] Figure 17 is a top view of a welding module of an embodiment of the present utility model;

[0035] Figure 18 is a partial perspective view of a ring seam welding outer pressing module of an embodiment of the present utility model;

[0036] Figure 19 is a top view of a ring seam welding outer pressing module of an embodiment of the present utility model;

[0037] Figure 20 is a partial side view of a ring seam welding outer pressing module of an embodiment of the present utility model;

[0038] Figure 21 is a rear view of a welding module of an embodiment of the present utility model;

[0039] Figure 22 is a perspective view of a welding support module of an embodiment of the present utility model;

[0040] Figure 23 is an assembly view of a welding system when a short cylinder and a head are butt-jointed in a ring seam of an embodiment of the present utility model;

[0041] Figure 24It is the assembly view of the welding system when the butt joint ring seam of the welding short cylinder and the head is welded.

[0042] Mark for explaining:

[0043] 1 auxiliary rack, 2 ring seam welding inner support module, 3 ring seam welding outer pressing module, 4 welding module, 5 welding support module, 1-1 auxiliary rack base, 1-2 auxiliary rack stand, 2-2 short cylinder-short cylinder ring seam welding inner support module, 2-3 short cylinder-head ring seam welding inner support module, 2-4 ground rail, 3-1 pressing mechanism rack, 3-2 pressing cylinder, 3-3 pressing block, 3-4 pressing mechanism support stand, 3-5 outer pressing mechanism support base, 3-6 outer pressing mechanism mounting seat, 3-7 base arc helical gear guide rail, 3-8 base guide rail, 3-9 fourth screw rod, 3-10 limit wheel, 3-11 base driving mechanism, 4-1 rack stand, 4-2 welding head, 4-3 rolling mechanism, 4-4 rack base, 4-5 driving helical gear mechanism, 4-6 guide wheel, 4-7 pressing wheel, 5-1 welding bottom guide rail, 5-2 welding bottom support base, 5-3 guardrail, 2-2-1 short cylinder-short cylinder inner support module, 2-2-2 short cylinder-short cylinder support stand, 2-2-3 short cylinder-short cylinder support base, 2-2-4 short cylinder-short cylinder support disc, 2-3-1 short cylinder-head support base, 2-3-2 foldable stand module, 3-1-1 pressing mechanism rack crossbeam, 3-1-2 pressing mechanism rack support, 2-2-1-1 center shaft, 2-2-1-2 rotating rod, 2-2-1-3 short cylinder-short cylinder inner support block, 2-3-2-1 rotary gear, 2-3-2-2 driving gear mechanism, 2-3-2-3 short cylinder-head support stand, 2-3-2-4 first screw rod slider, 2-3-2-5 first driving connecting rod, 2-3-2-6 first ejecting cylinder, 2-3-2-7 connecting arm, 2-3-2-8 second screw rod 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 ejecting cylinder, 2-3-2-15 retracting cylinder, 2-3-2-16 short cylinder-head support base stand, 2-2-1-3-1 short cylinder-short cylinder arc-shaped air protection groove, 2-2-1-3-2 short cylinder-short cylinder rolling support surface, 2-2-1-3-3 short cylinder-short cylinder protection air inlet, 2-3-2-13-1 short cylinder-head rolling support surface, 2-3-2-13-2 short cylinder-head arc-shaped air protection groove, 2-3-2-13-3 short cylinder-head protection air inlet. DETAILED DESCRIPTION

[0044] The features and exemplary embodiments of each aspect of the present application will be described in detail below, in order to make the purpose, technical scheme and advantages of the present application more clear and understandable, the present application will be further described in detail below with reference to the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present application, for exemplary description of the principles of the present application, and are not configured to limit the present application. In addition, the components in the drawings are not necessarily drawn to scale. For example, the size of some components in the drawings can be enlarged for other components or areas to help understand the embodiments of the present application.

[0045] The orientation words appearing in the following description are the directions shown in the drawings, and are not limited to the specific structure of the embodiments of the present application. In the description of the present application, it should be noted that, unless otherwise stated, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] In addition, the terms "include", "contain", "have" or any other variant thereof are intended to cover non-exclusive inclusion, so that the inclusion of a series of element structures or components not only includes those elements, but also includes other elements not explicitly listed or inherent in the structure, component. Without more limitation, the elements defined by the sentence "include" do not exclude the presence of other identical elements in the article or device including the elements.

[0047] Spatial relationship terms such as "below", "under", "under", "low", "above", "on", "high" are used to facilitate description, to explain the position of one element relative to the second element, which is intended to cover different orientations of the device in addition to those shown in the drawings. In addition, for example, "one element is on / under 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" are also used to describe various elements, regions, parts, etc., and are not specifically intended to refer to order or sequence, and should not be considered as limiting. Similar terms are used throughout the description to represent similar elements.

[0048] In the process of describing the utility model in the following, it can use "rocket", "carrier rocket", "spacecraft", "spacecraft carrier" or "missile" in certain scene description, which is only for the convenience of description, and the connotation is not limited to the specific word used. Generally, the carrier rocket and rocket of the utility model include space launch vehicles for carrying satellites or spaceships or other probes, and various missiles, rocket projectiles and other weapons for carrying military payloads, as well as similar products capable of sending payloads into the air. When interpreting the above specific words, those skilled in the art should not limit the carrier rocket and rocket to only one of the carrier rocket or the missile according to the specific word used in the description scene, thereby narrowing the protection scope of the utility model.

[0049] For those skilled in the art, the utility model can be implemented without some of these specific details. The following description of the embodiments is only to provide a better understanding of the utility model by showing examples of the utility model.

[0050] Figure 1 It is a perspective view of a welding system for a ring seam of a stainless steel rocket tank assembly of an embodiment of the utility model; Figure 2 It is a perspective view of a welding system for a ring seam of a stainless steel rocket tank assembly of an embodiment of the utility model; Figure 3 It is a perspective view of a short cylinder-to-head ring seam welding inner support module of an embodiment of the utility model; Figure 4 It is an unfolded view of a short cylinder-to-head ring seam welding inner support module of an embodiment of the utility model; Figure 5 It is a folded view of a short cylinder-to-head ring seam welding inner support module of an embodiment of the utility model; Figure 6 It is a combined view of a ring seam welding outer pressing module and a welding module of an embodiment of the utility model; Figure 7 It is a perspective view of a ring seam welding outer pressing module of an embodiment of the utility model; Figure 8 It is a perspective view of a short cylinder-to-short cylinder ring seam welding inner support module of an embodiment of the utility model; Figure 9 It is a perspective view of a short cylinder-to-short cylinder inner support block of an embodiment of the utility model; Figure 10 It is a partial perspective view of a short cylinder-to-head ring seam welding inner support module of an embodiment of the utility model; Figure 11 It is a side view of Figure 10 It is a top view of Figure 12 It is a side view of Figure 10 It is a top view of Figure 13 It is a side view of Figure 10 It is a side view of Figure 14 It is a partial perspective view of a short cylinder-to-head ring seam welding inner support module of an embodiment of the utility model; Figure 15 It is a perspective view of a short cylinder-to-head inner support block of an embodiment of the utility model;Figure 16 is a perspective view of a welding module of one embodiment of the present application; Figure 17 is a top view of a welding module of one embodiment of the present application; Figure 18 is a partial perspective view of a ring seam welding outer pressing module of one embodiment of the present application; Figure 19 is a top view of a ring seam welding outer pressing module of one embodiment of the present application; Figure 20 is a partial side view of a ring seam welding outer pressing module of one embodiment of the present application; Figure 21 is a rear view of a welding module of one embodiment of the present application; Figure 22 is a perspective view of a welding support module of one embodiment of the present application; Figure 23 is an assembly view of a welding system when a short cylinder and a head are butted against a ring seam of one embodiment of the present application; Figure 24 is an assembly view of a welding system when a short cylinder and a head are butted against a ring seam of one embodiment of the present application.

[0051] As shown in Figures 1-5 the present application provides a welding system applied to a ring seam of a stainless steel rocket storage tank assembly, comprising: a short cylinder-short cylinder ring seam welding inner supporting module 2-2 and a short cylinder-head ring seam welding inner supporting module 2-3. The short cylinder-short cylinder ring seam welding inner supporting module 2-2 comprises a short cylinder-short cylinder support module and a short cylinder-short cylinder inner supporting module 2-2-1, and the short cylinder-short cylinder support module is used for supporting the short cylinder-short cylinder inner supporting module 2-2-1. The short cylinder-short cylinder inner supporting module 2-2-1 can rotate along the circumferential direction of the short cylinder-short cylinder support module to support the butt joint ring seam of the short cylinder and the short cylinder. The short cylinder-head ring seam welding inner supporting module 2-3 comprises a short cylinder-head support base 2-3-1 and a foldable column module 2-3-2, and the short cylinder-head support base 2-3-1 is used for supporting the foldable column module 2-3-2. The foldable column module 2-3-2 comprises a short cylinder-head support column 2-3-2-3 and a short cylinder-head inner supporting module, and the short cylinder-head inner supporting module can rotate around the short cylinder-head support column 2-3-2-3 to make the free end of the short cylinder-head inner supporting module close to or away from the short cylinder-head support column 2-3-2-3. The foldable column module 2-3-2 can rotate around the circumferential direction of the short cylinder-head support base 2-3-1 to drive the short cylinder-head inner supporting module to rotate around the circumferential direction of the short cylinder-head support base 2-3-1 and support the butt joint ring seam of the short cylinder and the head.

[0052] Specifically, in the existing short cylinder welding of the storage tank assembly head, the inner support tooling mostly adopts an integral inner support structure, which has the following characteristics: first, it is mainly applied to aluminum alloy or other steel storage tanks with a wall thickness greater than 4 mm, and such storage tanks have high steel strength and high roundness requirements, and thus need to be integrally supported and rounded to meet the production needs; second, the integral support and rounding equipment has a complex inner support structure and is difficult to manufacture, and is limited by the circuit and gas pipeline interference of the inner support equipment, the structure of the integral support and rounding is difficult to contract, and it is difficult to balance the equipment volume and the equipment steel strength, and in the case of a limited bottom flange of the storage tank bottom head, the integral inner support equipment must weaken the steel strength of the inner support tooling and reduce the space occupied by a single inner support; third, the existing integral inner support tooling has poor steel strength in the radial direction in the manufacture of large storage tanks (storage tanks with a diameter of more than 3.5 m), and the support arm is too long, the tooling needs to be inserted into the storage tank to a greater depth, and the use range is limited.

[0053] In the embodiment, the ring seam welding inner support module 2 for the stainless steel storage tank assembly includes a short cylinder-short cylinder ring seam welding inner support module 2-2 and a short cylinder-head ring seam welding inner support module 2-3, which are respectively used for supporting the butt joint ring seam of the short cylinder and the short cylinder and the butt joint ring seam of the short cylinder and the head, and the short cylinder-head inner support module is rotated around the short cylinder-head support column 2-3-2-3 in the plane where the axis of the short cylinder-head support column 2-3-2-3 is located, so as to realize the folding and unfolding of the short cylinder-head inner support module. The welding system adopts a segmented welding process to complete the welding of all ring seams of the assembly, and does not need to use weld seam tracking. In addition, the welding system does not need to disassemble the inner support module 2, and especially when welding the butt joint ring seam of the short cylinder and the head, the short cylinder-head ring seam welding inner support module 2-3 does not need to be disassembled, and the support for the welding of the short cylinder butt joint ring seam and the short cylinder-head assembly ring seam of the stainless steel storage tank assembly can be realized through the manhole, so as to simplify the ring seam welding process of the stainless steel storage tank assembly.

[0054] As shown in Figure 1 According to one embodiment of the utility model, in addition to the ring seam welding inner support module 2, the welding system further includes an auxiliary rack 1 for hoisting the storage tank, cooperating with the short cylinder-short cylinder ring seam welding inner support module 2-2 and the short cylinder-head ring seam welding inner support module 2-3, and performing butt joint and butt joint ring seam welding on the short cylinder and the short cylinder and the short cylinder and the head.

[0055] In the embodiment, the auxiliary rack 1 can be used for hoisting and positioning the storage tank, cooperating with the short cylinder-short cylinder ring seam welding inner support module 2-2 and the short cylinder-head ring seam welding inner support module 2-3, and supporting the butt joint ring seam of the short cylinder and the short cylinder and the short cylinder and the head, and cooperating with the welding equipment to form a welding tooling. The auxiliary rack 1 can also provide installation space for the welding equipment or the welding module 4 (such as a laser welding device), and provide space for hoisting and transporting the storage tank.

[0056] According to one embodiment of the utility model, short cylinder - head support stand column 2 - 3 - 2 - 3 lower end part sets up short cylinder - head support base stand column 2 - 3 - 2 - 16, short cylinder - head support stand column 2 - 3 - 2 - 3 with short cylinder - head support base stand column 2 - 3 - 2 - 16 rotatable connection.

[0057] Further, short cylinder - head support base stand column 2 - 3 - 2 - 16 is provided with rotary gear 2 - 3 - 2 - 1 along its circumferential direction, and short cylinder - head support stand column 2 - 3 - 2 - 3 is provided with driving gear mechanism 2 - 3 - 2 - 2 corresponding to rotary gear 2 - 3 - 2 - 1.

[0058] In the embodiment, rotary gear 2 - 3 - 2 - 1 can be arranged near the upper end of short cylinder - head support base stand column 2 - 3 - 2 - 16, and driving gear mechanism 2 - 3 - 2 - 2 is arranged near the lower end of short cylinder - head support stand column 2 - 3 - 2 - 3.

[0059] As shown in Figure 2 According to one embodiment of the utility model, in addition to short cylinder - short cylinder girth seam welding inner support module 2 - 2 and short cylinder - head girth seam welding inner support module 2 - 3, the welding system also includes ground rail 2 - 4.

[0060] In the embodiment, the lower end surface of short cylinder - head support base 2 - 3 - 1 can be provided with a through hole and a guide rail driving motor, and the through hole is adapted to ground rail 2 - 4.

[0061] As shown in Figure 6 and 7 According to one embodiment of the utility model, in addition to girth seam welding inner support module 2, the welding system also includes girth seam welding outer pressing module 3 for pressing the butt joint girth of short cylinder and short cylinder, and the butt joint girth of short cylinder and head.

[0062] In the embodiment, girth seam welding outer pressing module 3 cooperates with girth seam welding inner support module 2 to press the girth, and completes the girth seam welding of head and short cylinder, short cylinder and short cylinder, or (tank) short cylinder and head.

[0063] As shown in Figure 8As shown, according to an embodiment of the present application, the short cylinder-short cylinder support module comprises a central shaft 2-2-1-1, and the short cylinder-short cylinder inner support module 2-2-1 comprises a rotating rod 2-2-1-2. The rotating rod is connected with the central shaft 2-2-1-1 and the short cylinder-short cylinder inner support block 2-2-1-3 at two ends respectively, and the rotating rod 2-2-1-2 can rotate around the central shaft 2-2-1-1 to drive the short cylinder-short cylinder inner support block 2-2-1-3 to rotate.

[0064] In the embodiment, the central shaft 2-2-1-1 can be driven by a motor (or the central shaft 2-2-1-1 is a motor) to drive the short cylinder-short cylinder inner support module 2-2-1 to rotate around the central shaft 2-2-1-1. The short cylinder-short cylinder inner support block 2-2-1-3 can be a non-integer 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 circumference of the inner side of the short cylinder, and X can be 3-12.

[0065] According to an embodiment of the present application, the short cylinder-short cylinder support module comprises a short cylinder-short cylinder support base 2-2-3, a short cylinder-short cylinder support column 2-2-2 and a short cylinder-short cylinder support disc 2-2-4. A plurality of short cylinder-short cylinder support columns 2-2-2 are arranged along the circumferential direction of the short cylinder-short cylinder support base 2-2-3, and the short cylinder-short cylinder support column 2-2-2 is used to support the short cylinder-short cylinder support disc 2-2-4. The short cylinder-short cylinder support disc 2-2-4 is used to place the short cylinder-short cylinder inner support module 2-2-1. The central shaft 2-2-1-1 is arranged in the middle of the short cylinder-short cylinder support disc 2-2-4, and the short cylinder-short cylinder inner support module 2-2-1 can rotate along the circumferential direction of the short cylinder-short cylinder support disc 2-2-4 to support the butt joint of the short cylinder and the short cylinder.

[0066] In the embodiment, the lower end surface of the short cylinder-short cylinder support base 2-2-3 can be provided with a through hole matched with the ground rail 2-4 and a guide rail driving motor to move the short cylinder-short cylinder support base 2-2-3 along the ground rail 2-4. The short cylinder-short cylinder support column 2-2-2 and the short cylinder-short cylinder support base 2-2-3 can be fixed by welding or screwing. The short cylinder-short cylinder support column 2-2-2 can comprise a central column arranged on the short cylinder-short cylinder support base 2-2-3 and six symmetrical secondary balance columns arranged uniformly along the circumferential direction of the short cylinder-short cylinder support base 2-2-3.

[0067] The rotating rod 2-2-1-2 can be provided with a driving cylinder (such as a pneumatic cylinder), and the driving cylinder is connected with the center shaft 2-2-1-1 (a motor) and the short cylinder-short cylinder inner support block 2-2-1-3 at two ends respectively. The driving cylinder is retracted and extended to drive the short cylinder-short cylinder inner support block 2-2-1-3 to approach or move away from the ring seam, so as to facilitate the feeding or supporting of the ring seam. The contact surface of the short cylinder-short cylinder inner support block 2-2-1-3 and the short cylinder can be a profiled arc surface matched with the inner side surface of the short cylinder, and the radius of the arc surface is equal to the inner diameter of the short cylinder. The arc surface of the short cylinder-short cylinder inner support block 2-2-1-3 can have a length of 1-3 m and a width of 50-200 mm.

[0068] As shown in Figure 9 , according to one embodiment of the utility model, the upper end surface of the short cylinder-short cylinder inner support block 2-2-1-3 can be provided with a short cylinder-short cylinder protective gas inlet 2-2-1-3-3, and the contact surface of the short cylinder-short cylinder inner support block 2-2-1-3 and the short cylinder is provided with a short cylinder-short cylinder arc-shaped gas protection groove 2-2-1-3-1 along the circumferential direction thereof, and the short cylinder-short cylinder protective gas inlet 2-2-1-3-3 is communicated with the short cylinder-short cylinder arc-shaped gas protection groove 2-2-1-3-1 to provide protective gas to the butt joint ring seam of the short cylinder and the short cylinder.

[0069] In the embodiment, the upper end surface of the short cylinder-short cylinder inner support block 2-2-1-3 can be provided with a plurality of short cylinder-short cylinder protective gas inlets 2-2-1-3-3 along the length direction thereof. The groove width of the short cylinder-short cylinder arc-shaped gas protection groove 2-2-1-3-1 can be 5-20 mm, and the groove depth can be 20-50 mm.

[0070] According to one embodiment of the utility model, the contact surface of the short cylinder-short cylinder inner support block 2-2-1-3 and the short cylinder can be provided with a short cylinder-short cylinder rolling support surface 2-2-1-3-2 along the circumferential direction thereof. When rolling the butt joint ring seam of the short cylinder and the short cylinder, the short cylinder-short cylinder rolling support surface 2-2-1-3-2 is used to support the ring seam.

[0071] In the embodiment, the short cylinder-short cylinder rolling support surface 2-2-1-3-2 can be arranged at a position 100 mm below the short cylinder-short cylinder arc-shaped gas protection groove 2-2-1-3-1, and the width of the short cylinder-short cylinder rolling support surface 2-2-1-3-2 can be 20-60 mm. The short cylinder-short cylinder rolling support surface 2-2-1-3-2 can be embedded in the short cylinder-short cylinder inner support block 2-2-1-3 using hard alloy as a base material.

[0072] As shown in Figure 4 and 5As shown, according to one embodiment of the utility model, short cylinder - head inner support module includes first drive connecting rod 2-3-2-5, connecting arm 2-3-2-7 and short cylinder - head inner support block 2-3-2-13, and the both ends of connecting arm 2-3-2-7 are connected with short cylinder - head support column 2-3-2-3 and short cylinder - head inner support block 2-3-2-13 respectively. Short cylinder - head inner support block 2-3-2-13 is used to support the butt joint ring seam of short cylinder and head. One end of first drive connecting rod 2-3-2-5 is connected with short cylinder - head support column 2-3-2-3 through first screw rod sliding block 2-3-2-4, and the other end of first drive connecting rod 2-3-2-5 is connected with the free end of connecting arm 2-3-2-7. First screw rod sliding block 2-3-2-4 can slide along the axial direction of short cylinder - head support column 2-3-2-3, and first drive connecting rod 2-3-2-5 is telescopic to drive connecting arm 2-3-2-7 to rotate.

[0073] In the embodiment, one end of connecting arm 2-3-2-7 is rotatably connected with short cylinder - head support column 2-3-2-3. First screw rod is arranged along the axial direction of short cylinder - head support column 2-3-2-3, first screw rod sliding block 2-3-2-4 moves along first screw rod, and first drive connecting rod 2-3-2-5 pushes connecting arm 2-3-2-7 to open and close arc-shaped movement around short cylinder - head support column 2-3-2-3. Connecting arm 2-3-2-7 can be rotatably connected with the top end of short cylinder - head support column 2-3-2-3. First drive connecting rod 2-3-2-5 can adopt a pneumatic cylinder. The end face of short cylinder - head inner support block 2-3-2-13 in contact with short cylinder or head 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. Short cylinder - head inner support block 2-3-2-13 can adopt a non-integral circle, for example, the circumferential length of short cylinder - head inner support block 2-3-2-13 can be 1 / X of the inner circumferential length of the short cylinder, and X can be 3-12. For example, the arc length of the arc surface of short cylinder - head inner support block 2-3-2-13 can be 1-3m, and the width can be 50-200mm. After the short cylinder - head inner support module is folded and contracted, the volume and space occupied by the whole is about 1 / X of the space occupied by the integral circle type inner support tool, which can reduce the complexity and cost of the system.

[0074] According to one embodiment of the utility model, first ejecting cylinder 2-3-2-6 is arranged on the side surface of short cylinder - head support column 2-3-2-3. First ejecting cylinder 2-3-2-6 is ejected, cooperates with first screw rod sliding block 2-3-2-4 and first drive connecting rod 2-3-2-5, and drives connecting arm 2-3-2-7 to rotate.

[0075] In the embodiment, when the connecting arm 2-3-2-7 is substantially attached or parallel to the short cylinder-head support column 2-3-2-3, the first ejection cylinder 2-3-2-6 is ejected, and the first screw block 2-3-2-4 and the first driving link 2-3-2-5 are matched to push the connecting arm 2-3-2-7 to rotate, so as to open the connecting arm 2-3-2-7. The first ejection cylinder 2-3-2-6 can be an electric driving cylinder. The first ejection cylinder 2-3-2-6 can be mounted on the side of the short cylinder-head support column 2-3-2-3 through a screw.

[0076] According to an embodiment of the utility model, in addition to the first driving link 2-3-2-5, the connecting arm 2-3-2-7 and the short cylinder-head inner support block 2-3-2-13, the short cylinder-head inner support module further comprises a connecting rod 2-3-2-10. The connecting rod 2-3-2-10 is respectively connected to the free end of the connecting arm 2-3-2-7 and the short cylinder-head inner support block 2-3-2-13 at both ends, and the connecting rod 2-3-2-10 can rotate around the connecting arm 2-3-2-7 (for example, can rotate in the plane where the axis of the connecting arm 2-3-2-7 is located), so as to make the short cylinder-head inner support block 2-3-2-13 approach or move away from the butt joint ring seam of the short cylinder and the head.

[0077] In the 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), so as to realize the opening and closing of the connecting arm 2-3-2-7 and the connecting rod 2-3-2-10. Figure 10 and 11 As shown in the drawings, the connecting rod 2-3-2-10 can be L-shaped.

[0078] According to an embodiment of the utility model, the short cylinder-head inner support module further comprises 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 block 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 block 2-3-2-8 can slide along the axial direction of the connecting arm 2-3-2-7, so as to drive the connecting rod 2-3-2-10 to rotate.

[0079] In the embodiment, the connecting arm 2-3-2-7 is provided with a second screw rod along the axial direction thereof, the second screw rod slide block 2-3-2-8 is in displacement movement along the second screw rod, and the second connecting rod 2-3-2-9 is driven 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 with the second screw rod slide block 2-3-2-8 and the connecting rod 2-3-2-10 through pins, respectively. 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, so as to realize the folding and unfolding of the foldable column module 2-3-2.

[0080] According to an embodiment of the utility model, the side surface of the connecting arm 2-3-2-7 is provided with a second ejection cylinder 2-3-2-14. The second ejection cylinder 2-3-2-14 is ejected to cooperate with the second screw rod slide block 2-3-2-8 and the second connecting rod 2-3-2-9, and push the connecting rod 2-3-2-10 to rotate.

[0081] In the embodiment, for example, when the connecting rod 2-3-2-10 is basically attached to or parallel to the connecting arm 2-3-2-7, the second ejection cylinder 2-3-2-14 is ejected to cooperate with the second screw rod slide block 2-3-2-8 and the second connecting rod 2-3-2-9, and push the connecting rod 2-3-2-10 to rotate, so as to realize the opening of the connecting rod 2-3-2-10. The second ejection cylinder 2-3-2-14 can be an electrically driven cylinder. The second ejection cylinder 2-3-2-14 can be installed on the side surface of the connecting arm 2-3-2-7 through a screw.

[0082] As shown in Figure 10 According to an embodiment of the utility model, the two sides of the connecting rod 2-3-2-10 are respectively provided with support rods 2-3-2-11, which are used to tightly press the inner side surface of the short cylinder-head inner support block 2-3-2-13.

[0083] In the embodiment, for example, when the outer side surface of the short cylinder-head inner support block 2-3-2-13 tightly presses the short cylinder skin, the support rod 2-3-2-11 tightly presses the inner side surface of the short cylinder-head inner support block 2-3-2-13 to provide internal support and positioning for the short cylinder-head inner support block 2-3-2-13. The two sides of the connecting rod 2-3-2-10 are respectively provided with support rods 2-3-2-11, which can provide more uniform internal support for the short cylinder-head inner support block 2-3-2-13, improve the rigidity of the system, and at the same time, improve the ability of the short cylinder-head inner support block 2-3-2-13 to withstand radial pressure, so as to make the support more stable. For example, the support rod 2-3-2-11 can be a cylinder support rod. The support rod 2-3-2-11 is rotatably connected with the connecting rod 2-3-2-10.

[0084] As Figure 12 shown, according to one embodiment of the utility model, the connecting rod 2-3-2-10 sets up the contraction cylinder 2-3-2-15 of connecting support rod 2-3-2-11, and the contraction cylinder 2-3-2-15 telescopes to make support rod 2-3-2-11 close or away from the rotation of connecting rod 2-3-2-10.

[0085] In this embodiment, the contraction cylinder 2-3-2-15 telescopic control support rod 2-3-2-11 close or away from the rotation of connecting rod 2-3-2-10, realize the opening and closing of support rod 2-3-2-11.The contraction cylinder 2-3-2-15 can be a cylinder.The contraction cylinder 2-3-2-15 can be set in the connecting rod 2-3-2-10.

[0086] As Figure 14 shown, according to one embodiment of the utility model, the free end of connecting rod 2-3-2-10 sets up two shaft connecting rod 2-3-2-12, and the end of two shaft connecting rod 2-3-2-12 away from connecting rod 2-3-2-10 sets up short cylinder-head inner support block 2-3-2-13.Two shaft connecting rod 2-3-2-12 can rotate along its axial direction relative to connecting rod 2-3-2-10, to drive short cylinder-head inner support block 2-3-2-13 to rotate.

[0087] In this embodiment, the end of connecting rod 2-3-2-10 for connecting two shaft connecting rod 2-3-2-12 can set up first motor 2-3-2-12-1, and first motor 2-3-2-12-1 is used to drive two shaft connecting rod 2-3-2-12 and short cylinder-head inner support block 2-3-2-13 to rotate around the axial direction of connecting rod 2-3-2-10.

[0088] According to one embodiment of the utility model, the end of two shaft connecting rod 2-3-2-12 away from connecting rod 2-3-2-10 sets up the rotation shaft 2-3-2-12-3 perpendicular to its axial direction, and short cylinder-head inner support block 2-3-2-13 is fixedly connected with rotation shaft 2-3-2-12-3.Rotation shaft 2-3-2-12-3 rotates, drives short cylinder-head inner support block 2-3-2-13 to rotate around two shaft connecting rod 2-3-2-12 in the plane where the axis of two shaft connecting rod 2-3-2-12 is located.

[0089] In the embodiment, the two-axle connecting rod 2-3-2-12 can be provided with a second motor 2-3-12-2 connected with the rotating axle 2-3-2-12-3, and the second motor 2-3-12-2 is used to drive the rotating axle 2-3-2-12-3 to rotate around the axial direction of the rotating axle 2-3-2-12-3, so as to drive the short cylinder-head inner support block 2-3-2-13 to rotate in the plane where the axial line of the two-axle 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-head inner support block 2-3-2-13 and the connecting rod 2-3-2-10. The welding system is folded through multiple degrees of freedom, and the occupied volume and space are further reduced.

[0090] As shown in Figure 15 According to one embodiment of the present application, the upper end surface of the short cylinder-head inner support block 2-3-2-13 can be provided with a short cylinder-head protective gas inlet 2-3-2-13-3, and the contact surface of the short cylinder-head inner support block 2-3-2-13 and the short cylinder can be provided with a short cylinder-head arc-shaped gas protection groove 2-3-2-13-2 along the circumferential direction of the short cylinder-head arc-shaped gas protection groove 2-3-2-13-2, and the short cylinder-head protective gas inlet 2-3-2-13-3 is communicated with the short cylinder-head arc-shaped gas protection groove 2-3-2-13-2 to provide protective gas to the joint ring gap of the short cylinder and the head.

[0091] In the embodiment, the upper end surface of the short cylinder-head inner support block 2-3-2-13 can be provided with multiple short cylinder-head protective gas inlets 2-3-2-13-3 along the length direction of the short cylinder-head arc-shaped gas protection groove 2-3-2-13-2. The groove width of the short cylinder-head arc-shaped gas protection groove 2-3-2-13-2 can be 5-20mm, and the groove depth can be 20-50mm. The distance between the short cylinder-head arc-shaped gas protection groove 2-3-2-13-2 and the upper end surface of the short cylinder-head inner support block 2-3-2-13 can be 100mm.

[0092] According to one embodiment of the present application, the contact surface of the short cylinder-head inner support block 2-3-2-13 and the short cylinder can be provided with an arc-shaped inner support red copper steel plate to prevent splashes from adhering to the short cylinder-head inner support block 2-3-2-13.

[0093] In the embodiment, the arc-shaped inner support red copper steel plate can be arranged around the short cylinder-head arc-shaped gas protection groove 2-3-2-13-2.

[0094] According to one embodiment of the present application, the contact surface of the short cylinder-head inner support block 2-3-2-13 and the short cylinder can be provided with a short cylinder-head rolling support surface 2-3-2-13-1 along the circumferential direction of the short cylinder-head arc-shaped gas protection groove 2-3-2-13-2. When the joint ring gap of the short cylinder and the head is rolled, the short cylinder-head rolling support surface 2-3-2-13-1 is used to support the ring gap.

[0095] In the embodiment, the short cylinder-head rolling support surface 2-3-2-13-1 can be arranged at 50 mm below the short cylinder-head arc-shaped air retaining groove 2-3-2-13-2, and the width of the short cylinder-head rolling support surface 2-3-2-13-1 can be 20-60 mm. The short cylinder-head rolling support surface 2-3-2-13-1 can be inlaid in the short cylinder-head inner support block 2-3-2-13 by using a steel plate or a hard alloy as a base material.

[0096] As shown in Figure 16 and 17 According to one embodiment of the utility model, in addition to the ring seam 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 ring seam.

[0097] In the embodiment, the welding head 4-2 can be a laser welding head.

[0098] According to one embodiment of the utility model, in addition to the welding head 4-2, the welding module 4 further comprises a rack column 4-1. The welding head 4-2 is installed on the rack column 4-1 and can slide in multiple directions relative to the rack column 4-1.

[0099] According to one embodiment of the utility model, the rack column 4-1 is provided with a third lead screw in the axial direction thereof, and the third lead screw is provided with a third lead screw sliding block. The third lead screw sliding block is provided with a connecting plate perpendicular to the rack column 4-1, and a radial guide rail is arranged on the connecting plate. The welding head 4-2 is slidably arranged relative to the radial guide rail to approach or move away from the ring seam to be welded. The third lead screw sliding block is slidably arranged in the axial direction of the third lead screw to drive the welding head 4-2 to move in the axial direction of the rack column 4-1.

[0100] Further, the radial guide rail is provided with an electrically driven sliding block, and the welding head 4-2 is installed on the electrically driven sliding block.

[0101] According to one embodiment of the utility model, the welding head 4-2 is provided with a pressing wheel 4-7 on each side thereof in the welding direction, and the pressing wheel 4-7 is used to press the edge to be welded.

[0102] In the embodiment, the pressing wheel 4-7 presses the edge to be welded before welding, which can eliminate the misalignment of the weld and perform a better welding before welding.

[0103] According to one embodiment of the utility model, in addition to the welding head 4-2, the welding module 4 further comprises a rolling mechanism 4-3, and the rolling mechanism 4-3 is used to roll the ring seam after welding.

[0104] The welding system of the embodiment can roll and flatten the weld after welding through the rolling mechanism 4-3.

[0105] Further, the rolling mechanism 4-3 is installed on the electrically driven slider to approach or move away from the ring seam to be welded.

[0106] According to an embodiment of the present application, the ring seam welding outer pressing module 3 comprises a pressing mechanism rack 3-1, the pressing mechanism rack 3-1 is provided with a pressing cylinder 3-2 and a pressing block 3-3, and the pressing cylinder 3-2 and the pressing block 3-3 are fixedly connected. The pressing cylinder 3-2 is telescopic to drive the pressing block 3-3 to press the ring seam.

[0107] In the embodiment, the pressing cylinder 3-2 can be a pneumatic cylinder, and the pressing block 3-3 is installed on the driving rod of the pressing cylinder 3-2. The contact surface of the pressing block 3-3 with the ring seam can be an arc surface, and the radius of the arc surface is equal to the outer radius of the short cylinder. The pressing block 3-3 can be an electromagnetic pressing block. For example, when rolling the ring seam, the power supply of the electromagnetic pressing block is started to provide suction force for the electromagnetic pressing block, which can act on the short cylinder-short cylinder inner support block 2-2-1-3 or the short cylinder-head inner support block 2-3-2-13, and provide suction support while the pressing block 3-3 is pressing the ring seam. The electromagnetic pressing block suction force cooperates with the internal support of the connecting rod 2-3-2-10, the supporting rod 2-3-2-11 and the short cylinder-head inner support block 2-3-2-13, which can effectively solve the problem that the rolling force acting on the short cylinder-head inner support block 2-3-2-13 is easy to cause instability of the support. The welding system can provide tension, which can offset most of the rolling force when rolling, ensure that the rolling force acting on the short cylinder-short cylinder inner support block 2-2-1-3 or the short cylinder-head inner support block 2-3-2-13 is within a predetermined range, reduce the rigidity requirement of the welding system, and make the structure more compact.

[0108] The pressing mechanism rack 3-1 can be provided with multiple sets of pressing cylinders 3-2 and pressing blocks 3-3. For example, multiple sets of pressing cylinders 3-2 and pressing blocks 3-3 can be evenly arranged along the length direction of the pressing mechanism rack 3-1. The pressing mechanism rack 3-1 can be provided with two rows of symmetrical pressing cylinders 3-2 and pressing blocks 3-3, which are respectively used to press the two sides of the butt joint ring seam. The vertical distance between the two rows of pressing cylinders 3-2 and pressing blocks 3-3 can be 40-80mm, which provides a clearance space for welding and rolling.

[0109] As Figure 18 and 19As shown, according to an embodiment of the utility model, in addition to the pressing mechanism frame 3-1, the girth seam welding outer pressing module 3 further comprises an outer pressing mechanism support column 3-4 and an outer pressing mechanism support base 3-5. The outer pressing mechanism support base 3-5 is provided with the outer pressing mechanism support column 3-4 at both ends respectively, and the side of the outer pressing mechanism support column 3-4 away from each other is provided with the outer pressing mechanism mounting seat 3-6 respectively. The pressing mechanism frame 3-1 comprises a pressing mechanism frame crossbeam 3-1-1, and the pressing mechanism frame crossbeam 3-1-1 is provided with the pressing mechanism frame support 3-1-2 at both ends respectively. The pressing mechanism frame crossbeam 3-1-1 is used for installing the pressing cylinder 3-2 and the pressing block 3-3. The two pressing mechanism frame supports 3-1-2 of the pressing mechanism frame 3-1 are placed on the corresponding outer pressing mechanism mounting seat 3-6 respectively to support the pressing mechanism frame 3-1.

[0110] In the embodiment, the outer pressing mechanism support base 3-5 is arc-shaped and matched with the outer side of the short cylinder.

[0111] As shown, according to an embodiment of the utility model, the side of the two outer pressing mechanism support columns 3-4 away from each other is provided with the fourth lead screw 3-9 along the axial direction thereof respectively. The fourth lead screw 3-9 is provided with the fourth sliding block slidable along the axial direction thereof, the pressing mechanism frame support 3-1-2 is fixedly connected with the fourth sliding block, and the fourth sliding block drives the pressing mechanism frame 3-1 to move by sliding along the fourth lead screw 3-9. Figure 20

[0112] The welding system of the embodiment can drive the girth seam welding pressing mechanism frame 3-1, the pressing cylinder 3-2 and the pressing block 3-3 to move up and down along the vertical direction to adapt to the height of the butt joint girth seam of the short cylinder and the short cylinder or the butt joint girth seam of the short cylinder and the head, and press the girth seam, by moving the fourth sliding block along the axial direction of the fourth lead screw 3-9. The axial direction of the fourth lead screw 3-9 is the vertical direction of the welding system in actual application.

[0113] Those skilled in the art can understand that, in order to ensure that the pressing mechanism support column 3-4 supports the pressing mechanism frame 3-1 more stably, a plurality of pressing mechanism support columns 3-4 (for example, two pressing mechanism support columns 3-4 are arranged at both ends of the outer pressing mechanism support base 3-5) can be arranged at both ends of the outer pressing mechanism support base 3-5, and correspondingly, the pressing mechanism support column 3-4 can be provided with the fourth lead screw 3-9, the fourth sliding block and the outer pressing mechanism mounting seat 3-6.

[0114] According to an embodiment of the utility model, the welding module 4 is arranged on the outer pressing mechanism support base 3-5 and can move along the welding direction of the girth seam relative to the outer pressing mechanism support base 3-5.

[0115] As​Figure 18 and 21 As shown in the figure, according to an embodiment of the utility model, between two outer pressing mechanism support stand columns 3-4, the outer pressing mechanism support base 3-5 sets up base arc helical gear guide rail 3-7. The both ends of base arc helical gear guide rail 3-7 extend to outer pressing mechanism support stand column 3-4 respectively. The welding module further includes rack base 4-4, and rack stand column 4-1 is arranged on rack base 4-4. The lower end surface of rack base 4-4 is provided with driving helical gear mechanism 4-5 meshing with base arc helical gear guide rail 3-7, and driving helical gear mechanism 4-5 can move along base arc helical gear guide rail 3-7 to drive the welding head to move, thereby realizing circumferential welding of the girth seam.

[0116] In the embodiment, base arc helical gear guide rail 3-7 is arc-shaped and matched with the outer side surface of the short cylinder. Driving helical gear mechanism 4-5 can include a driving motor and a gear, the driving motor drives the gear to rotate along base arc helical gear guide rail 3-7, which can drive welding module 4 to make reciprocating arc motion to weld the girth seam along the circumferential direction of the short cylinder. Base arc helical gear guide rail 3-7 can be locked on outer pressing mechanism support base 3-5 by screws.

[0117] According to an embodiment of the utility model, outer pressing mechanism support base 3-5 is provided with base guide rail 3-8, and the lower end surface of rack base 4-4 is provided with guide wheel 4-6 corresponding to base guide rail 3-8. Guide wheel 4-6 moves along base guide rail 3-8 to provide guidance for the movement of welding module 4 along the girth seam welding direction.

[0118] In the embodiment, base guide rail 3-8 can be arc-shaped and matched with the outer side surface of the short cylinder to ensure that welding module 4 can make reciprocating arc motion along base guide rail 3-8. Base guide rail 3-8 can be locked on outer pressing mechanism support base 3-5 by screws.

[0119] As shown in the figure, Figure 22 , 23 and 24, according to an embodiment of the utility model, in addition to girth seam welding inner support module 2 and welding module 4, the welding system further includes welding support module 5. Welding support module 5 is used for supporting welding module 4. Welding support module 5 includes annular welding bottom guide rail 5-1, and welding module 4 can move along welding bottom guide rail 5-1 to rotate welding module 4 around the circumferential direction of the short cylinder.

[0120] In the embodiment, the short cylinder, the head, the short cylinder-short cylinder girth seam welding inner supporting module 2-2 or the short cylinder-head girth seam welding inner supporting module 2-3 to be welded is placed in the middle part of the welding supporting module 5 (namely the middle part of the annular welding bottom guide rail 5-1), and the girth seam welding outer pressing module 3 and the welding module are placed on the annular welding bottom guide rail 5-1. The girth seam welding outer pressing module 3 and the welding module can rotate along the circumferential direction of the butt girth seam to weld the whole girth seam.

[0121] Further, the welding supporting module 5 further comprises a welding bottom supporting base 5-2, and the welding bottom guide rail 5-1 is installed on the welding bottom supporting base 5-2.

[0122] According to an embodiment of the utility model, the outer pressing mechanism supporting base 3-5 lower end face sets up the limit wheel 3-10 corresponding with the welding bottom guide rail 5-1. The limit wheel 3-10 can move along the welding bottom guide rail 5-1.

[0123] In the embodiment, the limit wheel 3-10 moves along the welding bottom guide rail 5-1, which can drive the girth seam welding outer pressing module 3 and the welding module 4 to rotate around the circumferential direction of the short cylinder to press and weld the whole girth seam.

[0124] According to an embodiment of the utility model, the outer pressing mechanism supporting base 3-5 sets up the base driving mechanism 3-11. The base driving mechanism 3-11 cooperates with the limit wheel 3-10 to drive the outer pressing mechanism supporting base 3-5 to move along the welding bottom guide rail 5-1.

[0125] In the embodiment, the base driving 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 correspondingly, the outer pressing mechanism supporting base 3-5 can be provided with multiple sets of base driving mechanisms 3-11 and limit wheels 3-10 (such as four sets).

[0126] According to an embodiment of the utility model, the welding bottom supporting base 5-2 sets up the guardrail 5-3. The guardrail 5-3 is arranged on the periphery of the welding bottom guide rail 5-1.

[0127] In the embodiment, the guardrail 5-3 can be used for safety protection of personnel and provides a non-interference space for welding.

[0128] According to an embodiment of the utility model, the auxiliary rack 1 sets up the auxiliary rack base 1-1 and the auxiliary rack stand 1-2. The welding supporting module 5 is arranged on the auxiliary rack stand 1-2 and can slide along the axial direction of the auxiliary rack stand 1-2.

[0129] In the embodiment, for example, one auxiliary gantry column 1-2 can be arranged at each of the circumferential direction or the periphery of the auxiliary gantry base 1-1, and the welding bottom support base 5-2 is arranged between the four auxiliary gantry columns 1-2. For example, the welding bottom support base 5-2 is slidably connected with the four auxiliary gantry columns 1-2, so as to drive the ring seam welding outer pressing module 3 and the welding module 4 to move in the vertical direction. Through the movement of the gantry base 4-4 along the base circular arc helical gear guide rail 3-7, the outer pressing mechanism support base 3-5 along the welding bottom guide rail 5-1, the welding bottom support base 5-2 along the auxiliary gantry column 1-2, and the welding head 4-2 along the radial guide rail, the welding system can realize the multi-directional movement of the welding head 4-2, and realize the accurate welding of the weld in all directions and at different angles.

[0130] According to an embodiment of the utility model, the auxiliary gantry column 1-2 can be a screw rod column, and the welding bottom support base 5-2 is slidably connected with the screw rod column through a sliding block.

[0131] In the ring seam welding process of the stainless steel rocket tank assembly, first, a short cylinder or an upper head is hoisted at the auxiliary gantry, another short cylinder is moved to the welding station (i.e. the auxiliary gantry) by the short cylinder-short cylinder ring seam welding inner support module, and is connected with the hoisted short cylinder or upper head, the welding bottom support base 5-2 is moved to the ring seam in the vertical direction along the auxiliary gantry column 1-2 to perform welding and weld rolling; the welding of the remaining short cylinders is sequentially completed, the welded cylinder segment is hoisted, the lower head is moved to the welding station by the short cylinder-head ring seam welding inner support module 2-3, and is connected with the hoisted cylinder segment, and the welding bottom support base 5-2 is moved to the ring seam in the vertical direction along the auxiliary gantry column 1-2 to perform welding and weld rolling.

[0132] As shown in Figure 24 In the connecting ring seam welding process of the lower head and the short cylinder, only part of the foldable column module of the short cylinder-head ring seam welding inner support module 2-3 can be arranged from the head manhole into the short cylinder or the head, so as to support the connecting ring seam of the short cylinder and the head.

[0133] The above embodiments of the utility model can be combined with each other, and have corresponding technical effects.

[0134] The above is only a preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A welding system for use in the girth welding of stainless steel rocket tank assembly rings, characterized by, The application relates to a short cylinder-short cylinder ring seam welding inner support module and a short cylinder-head ring seam welding inner support module. The short cylinder-short cylinder ring seam welding inner support module comprises a short cylinder-short cylinder support module and a short cylinder-short cylinder inner support module, and the short cylinder-short cylinder support module is used for supporting the short cylinder-short cylinder inner support module. The short cylinder-short cylinder inner support module can rotate along the circumferential direction of the short cylinder-short cylinder support module to support the ring seam of the butt joint of the short cylinder and the short cylinder. The short cylinder-head ring seam welding inner support module comprises a short cylinder-head support base and a foldable column module, the short cylinder-head support base is used for supporting the foldable column module, the foldable column module comprises a short cylinder-head support column and a short cylinder-head inner support module, the short cylinder-head inner support module can rotate around the short cylinder-head support column to make the free end of the short cylinder-head inner support module close to or away from the short cylinder-head support column, and the foldable column module can rotate around the circumferential direction of the short cylinder-head support base to drive the short cylinder-head inner support module to rotate around the circumferential direction of the short cylinder-head support base and support the ring seam of the butt joint of the short cylinder and the head. The application further comprises an auxiliary frame used for hoisting a storage box and cooperating with the short cylinder-short cylinder ring seam welding inner support module and the short cylinder-head ring seam welding inner support module to butt joint the short cylinder and the short cylinder and the short cylinder and the head and weld the ring seam of the butt joint.

2. The welding system of claim 1, wherein, The application further comprises a ground rail, and the short cylinder-short cylinder ring seam welding inner support module and the short cylinder-head ring seam welding inner support module can move along the ground rail to reach a predetermined welding station.

3. The welding system of claim 1, wherein, The application further comprises a ring seam welding outer pressing module used for pressing the ring seam of the butt joint of the short cylinder and the short cylinder and the ring seam of the butt joint of the short cylinder and the head.

4. The welding system of claim 1, wherein, The short cylinder-short cylinder support module comprises a central shaft, the short cylinder-short cylinder inner support module comprises a rotating rod, and the two ends of the rotating rod are connected with the central shaft and a short cylinder-short cylinder inner support block respectively, and the rotating rod can rotate around the central shaft.

5. The welding system of claim 1, wherein, The short cylinder-head inner support module comprises a first driving connecting rod, a connecting arm and a short cylinder-head inner support block, the two ends of the connecting arm are connected with the short cylinder-head support column and the short cylinder-head inner support block respectively, the short cylinder-head inner support block is used for supporting the ring seam of the butt joint of the short cylinder and the head, one end of the first driving connecting rod is connected with the short cylinder-head support column through a first screw rod and sliding block, the other end of the first driving connecting rod is connected with the free end of the connecting arm, the first screw rod and sliding block can slide along the axial direction of the short cylinder-head support column, and the first driving connecting rod can be telescopic to drive the connecting arm to rotate.

6. The welding system of claim 1, wherein, The short cylinder-head inner support module further comprises a connecting rod, the two ends of the connecting rod are used for connecting the free end of the connecting arm and the short cylinder-head inner support block respectively, and the connecting rod can rotate around the connecting arm to make the short cylinder-head inner support block close to or away from the ring seam of the butt joint of the short cylinder and the head.

7. The welding system of claim 6, wherein, The application further comprises a welding module, and the welding module comprises a welding head used for welding the ring seam.

8. The welding system of claim 1, wherein, ​ 9. The welding system of claim 4, wherein, The ring seam welding outer pressure holding module comprises a pressure holding mechanism rack, the pressure holding mechanism rack is provided with a pressure holding cylinder and a pressure holding block, the pressure holding cylinder and the pressure holding block are fixedly connected; the pressure holding cylinder is telescopic to drive the pressure holding block to press the ring seam.

10. The welding system of claim 8, wherein, Further comprising a welding support module, the welding support module is used for supporting the welding module; the welding support module comprises a ring-shaped welding bottom guide rail, 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.

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