Welding equipment for butt-joint tailor-welding longitudinal seams of large plates of rocket storage tank cylinder section

Abstract

The invention provides welding equipment for butt-joint tailor-welding longitudinal seams of rocket tank cylinder section large plates. The welding equipment comprises a welding support; the welding support comprises an upper welding support, a lower welding support and a welding support base body. The welding upper bracket and the welding lower bracket are arranged at an interval and are fixedly connected through the welding bracket base body; the welding bracket is provided with a steel plate supporting bracket; the steel plate supporting bracket is used for supporting a steel plate; at least one of the opposite end faces of the welding upper support and the welding lower support is provided with a welding head capable of moving in the length direction of the welding upper support and the welding lower support so as to weld a butt joint longitudinal seam of a steel plate to be welded, and a storage tank barrel section is formed. According to the welding equipment, the process difficulty and the complexity of the equipment can be reduced.

Description

Technical Field

[0001] The present invention relates to the field of rocket tanks, and particularly to a welding device for the longitudinal seam of the butt welding of large plates of the barrel section of a rocket tank. Background Art

[0002] Generally, in the manufacturing process of large-diameter stainless-steel rocket tanks, the process of welding stainless-steel plates into short cylinders is roughly as follows: unrolling - flattening - cutting - welding longitudinal seams - short rings - stacking and welding circumferential seams - short cylinders. Among them, the welding position of the longitudinal seam of the short ring welding is vertical welding, and the welding position of the circumferential seam of the short cylinder is horizontal welding. The welding position is more difficult than the conventional flat welding position, and it is difficult to control the welding quality. In addition, the welding of the circumferential seam of the short cylinder has strict requirements for the accuracy of the equipment, the stability of the equipment, and the welding back-up.

[0003] To reduce the welding difficulty of the short cylinder of the tank, it is particularly important to design a welding device for the longitudinal seam of the butt welding of large plates of the barrel section of a rocket tank. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a welding device for the longitudinal seam of the butt welding of large plates of the barrel section of a rocket tank.

[0005] The present invention provides a welding device for the longitudinal seam of the butt welding of large plates of the barrel section of a rocket tank, including: a welding bracket; the welding bracket includes: a welding upper bracket, a welding lower bracket, and a welding bracket base; the welding upper bracket and the welding lower bracket are arranged at intervals and are fixedly connected through the welding bracket base; the welding bracket is provided with a steel plate support bracket, and the steel plate support bracket is used for supporting the steel plate; at least one of the opposite end faces of the welding upper bracket and the welding lower bracket is provided with a welding head movable along its length direction to weld the butt longitudinal seam of the steel plate to be welded to form a barrel section of the tank.

[0006] According to an embodiment of the present invention, the opposite end faces of the welding upper bracket and the welding lower bracket are respectively provided with a welding upper guide rail and a welding lower guide rail; the welding upper guide rail is provided with an upper welding component, and the welding lower guide rail is provided with a lower welding component; both the upper welding component and the lower welding component are provided with the welding head to weld the butt longitudinal seam from the front and back sides of the steel plate respectively.

[0007] According to an embodiment of the present invention, the upper welding component further includes a vertical shaft and a transverse guide rail shaft; wherein, the vertical shaft is movably arranged on the welding upper guide rail; the transverse guide rail shaft is arranged on the side of the vertical shaft, and the welding head is arranged on the lower end face of the transverse guide rail shaft; the transverse guide rail shaft can slide relative to the vertical shaft along the width direction of the welding upper guide rail to drive the welding head to align with the butt longitudinal seam of the steel plate to be welded.

[0008] According to an embodiment of the present invention, the upper welding component further includes a welding rolling mechanism; the welding rolling mechanism includes a welding rolling driving cylinder and a welding rolling wheel; the welding rolling wheel is rotatably connected to the telescopic rod of the welding rolling driving cylinder; along the welding direction of the longitudinal butt joint of the steel plate, one such welding rolling mechanism is respectively arranged in front of and behind the welding head; through the telescopic movement of the telescopic rod of the welding rolling driving cylinder, the welding rolling wheel is driven to approach or move away from the weld seam, so as to press the weld seam respectively in front of and behind the welding head.

[0009] According to an embodiment of the present invention, at least one pressing driving cylinder component is arranged on each side of the welding bracket along its length direction to press the two sides of the longitudinal butt joint of the steel plate; the pressing driving cylinder component includes a welding pressing driving cylinder and a welding pressing block, the welding pressing block is fixedly connected to the telescopic rod of the welding pressing driving cylinder, and through the telescopic movement of the telescopic rod of the welding pressing driving cylinder, the welding pressing block is driven to approach or move away from the steel plate.

[0010] According to an embodiment of the present invention, an outer positioning and limiting component and an inner positioning and limiting component are arranged on the end face of the welding lower bracket relative to the welding upper bracket; the outer positioning and limiting component includes: an outer positioning base, an outer positioning driving cylinder and an outer positioning upper limiting block; the outer positioning driving cylinder is arranged on the outer positioning base, and the outer positioning upper limiting block is connected to the telescopic rod of the outer positioning driving cylinder to adjust the height of the outer positioning upper limiting block; the inner positioning and limiting component includes: an inner positioning base, an inner positioning driving cylinder and an inner positioning upper limiting block; the inner positioning driving cylinder is arranged on the inner positioning base, and the inner positioning upper limiting block is connected to the telescopic rod of the inner positioning driving cylinder to adjust the height of the inner positioning upper limiting block; the outer positioning base and the inner positioning base are arranged on the welding lower bracket and are movably arranged relative to the welding lower bracket, so that the opposite end faces of the outer positioning upper limiting block and the inner positioning upper limiting block respectively abut against both ends of the longitudinal butt joint of the steel plate, so as to align the two steel plates to be welded.

[0011] According to an embodiment of the present invention, the outer positioning and limiting member further includes an outer connecting plate and an outer lower limiting member; the outer connecting plate is connected to the telescopic rod of the outer positioning driving cylinder; the outer positioning upper limiting block and the outer lower limiting member are arranged on the outer connecting plate; the inner positioning and limiting member further includes an inner connecting plate and an inner lower limiting member; the inner connecting plate is connected to the telescopic rod of the inner positioning driving cylinder; the inner positioning upper limiting block and the inner lower limiting member are arranged on the inner connecting plate; the outer lower limiting member and the inner lower limiting member are arranged opposite to each other; both the outer lower limiting member and the inner lower limiting member include a lower limiting driving cylinder and a lower limiting block; the lower limiting block is connected to the telescopic rod of the lower limiting driving cylinder, and the height of the lower limiting block is adjusted by the telescopic movement of the telescopic rod of the lower limiting driving cylinder; the upper end of the outer positioning upper limiting block extends towards the outer lower limiting member; the lower end surface at the extension is the upper plate thickness limiting surface, and the upper end surface of the lower limiting block is the corresponding lower plate thickness limiting surface; correspondingly, the upper end of the inner positioning upper limiting block extends towards the inner lower limiting member; the lower end surface of the extension is the upper plate thickness limiting surface, and the upper end surface of the lower limiting block is the corresponding lower plate thickness limiting surface; the upper plate thickness limiting surface and the corresponding lower plate thickness limiting surface are respectively attached to the front and back surfaces of the steel plate to eliminate the misalignment of the steel plate weld in the plate thickness direction.

[0012] According to an embodiment of the present invention, a left rolling conveying member and a right rolling conveying member are respectively arranged on both sides in the width direction of the welding bracket; both the left rolling conveying member and the right rolling conveying member include two rotatable rolling rollers; the two relatively arranged rolling rollers are used to respectively press from both side surfaces of the steel plate in the thickness direction to convey the steel plate to the welding equipment or send the steel plate out of the welding equipment.

[0013] According to an embodiment of the present invention, it further includes a lower anti-misalignment limiting member; the lower anti-misalignment limiting member includes a base connecting plate, a telescopic driving cylinder component, a limiting connecting plate, a lower anti-misalignment limiting driving cylinder and a lower anti-misalignment limiting block; the base connecting plate is arranged on the lower end surface of the steel plate support bracket; the telescopic driving cylinder component is arranged on the base connecting plate and is arranged along the width direction of the welding bracket; the limiting connecting plate is connected to the telescopic rod of the telescopic driving cylinder component; the lower anti-misalignment limiting driving cylinder is arranged on the limiting connecting plate and is arranged along the vertical direction; the lower anti-misalignment limiting block is connected to the telescopic rod of the lower anti-misalignment limiting driving cylinder; by the telescopic movement of the telescopic rod of the telescopic driving cylinder component, the limiting connecting plate, the lower anti-misalignment limiting driving cylinder and the lower anti-misalignment limiting block are horizontally extended or retracted to approach or move away from the longitudinal butt joint of the steel plate; by the telescopic movement of the telescopic rod of the lower anti-misalignment limiting driving cylinder, the lower anti-misalignment limiting block faces towards or away from the lower end surface of the steel plate to support or release the steel plate from the lower end surface of the steel plate.

[0014] According to an embodiment of the present invention, it further includes an upper anti-misalignment edge limiting component; the upper anti-misalignment edge limiting component includes a rotary motor, an L-shaped connecting rod, an upper anti-misalignment edge limiting driving cylinder, and an upper anti-misalignment edge limiting block; the rotary motor is arranged on the upper end surface of the pressing driving cylinder mounting bracket and is arranged along the length direction of the pressing driving cylinder mounting bracket; the rotating rod of the rotary motor is rotatably connected to one branch of the L-shaped connecting rod; the upper anti-misalignment edge limiting driving cylinder is arranged on the side surface of the other branch of the L-shaped connecting rod and is arranged along the extending direction of this branch; the upper anti-misalignment edge limiting block is connected to the telescopic rod of the upper anti-misalignment edge limiting driving cylinder; start the rotary motor, drive the rotating rod of the rotary motor to drive the L-shaped connecting rod to rotate in a plane perpendicular to the length direction of the pressing driving cylinder mounting bracket, so that the upper anti-misalignment edge limiting driving cylinder and the upper anti-misalignment edge limiting block face towards or away from the steel plate to rotate; when the other branch of the L-shaped connecting rod is in a vertical state, through the telescopic movement of the telescopic rod of the upper anti-misalignment edge limiting driving cylinder, make the upper anti-misalignment edge limiting block face towards or away from the upper end surface of the steel plate, so as to press or release the steel plate from the upper end surface of the steel plate.

[0015] The welding equipment for the longitudinal seam of the butt welding of large plates of the rocket tank barrel section according to the present invention changes the welding position of the existing three-dimensional welding equipment into a relatively simple flat welding position by positioning and welding the short barrel plates, reducing the process difficulty and the complexity of the equipment.

[0016] It should be understood that the above general description and the following specific embodiments are only exemplary and explanatory, and they cannot limit the scope claimed by the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following drawings are part of the specification of the present invention, which illustrate the exemplary embodiments of the present invention. The attached drawings and the description of the specification are used together to explain the principles of the invention.

[0018] Figure 1 is a three-dimensional view of the welding equipment for the longitudinal seam of the butt welding of large plates of the rocket tank barrel section according to an embodiment of the present invention;

[0019] Figure 2 is a three-dimensional view of the upper welding component according to an embodiment of the present invention;

[0020] Figure 3 is a three-dimensional view of the welding equipment for the longitudinal seam of the butt welding of large plates of the rocket tank barrel section according to another embodiment of the present invention;

[0021] Figure 4 is a three-dimensional view of the rolling component according to an embodiment of the present invention;

[0022] Figure 5It is the left view of the welding equipment for the longitudinal seam butt welding of large plates of the rocket tank barrel section in an embodiment of the present invention;

[0023] Figure 6 It is Figure 1 The enlarged view of A in;

[0024] Figure 7 It is the front view of the upper welding component in an embodiment of the present invention;

[0025] Figure 8 It is the three-dimensional view of the outer positioning and limiting component in an embodiment of the present invention;

[0026] Figure 9 It is the front view of the outer positioning and limiting component in an embodiment of the present invention;

[0027] Figure 10 It is the right view of the outer positioning and limiting component in an embodiment of the present invention;

[0028] Figure 11 It is the three-dimensional view of the right rolling transmission component in an embodiment of the present invention;

[0029] Figure 12 It is the rear view of the welding equipment for the longitudinal seam butt welding of large plates of the rocket tank barrel section in an embodiment of the present invention;

[0030] Figure 13 It is the three-dimensional view of the lower anti-misalignment limiting component in an embodiment of the present invention;

[0031] Figure 14 It is the three-dimensional view of the upper anti-misalignment limiting component in an embodiment of the present invention;

[0032] Figure 15 It is Figure 1 The enlarged view of C in;

[0033] Figure 16 It is Figure 12 The enlarged view of B in;

[0034] Figure 17 It is the three-dimensional view of the lower rolling component in an embodiment of the present invention;

[0035] Figure 18 It is the left view of the rolling component in an embodiment of the present invention;

[0036] Figure 19 It is the rear view of the rolling component in an embodiment of the present invention;

[0037] Figure 20 It is the three-dimensional view of the loading and positioning component in an embodiment of the present invention;

[0038] Figure 21Is a perspective view of the loading positioning block according to an embodiment of the present invention;

[0039] Figure 22 Is a perspective view of the steel plate guiding component according to an embodiment of the present invention.

[0040] Explanation of reference numerals:

[0041] 2 - Rolling component; 1 - 1 Welding bracket; 1 - 2 Inner positioning and limiting component; 1 - 3 Outer positioning and limiting component; 1 - 4 Upper anti - misalignment limiting component; 1 - 5 Lower anti - misalignment limiting component; 1 - 6 Right rolling conveyor component; 1 - 7 Left rolling conveyor component; 1 - 8 Lower welding component; 1 - 9 Upper welding component; 1 - 10 Compression drive cylinder component; 1 - 11 Blank feeding positioning component; 2 - 1 Rolling bracket; 2 - 2 Lower rolling component; 2 - 3 Upper rolling component; 2 - 4 Compression component; 2 - 5 Loading positioning component; 2 - 6 Steel plate guiding component; 1 - 1 - 1 Welding lower guide rail; 1 - 1 - 2 Welding upper guide rail; 1 - 1 - 3 Compression drive cylinder mounting bracket; 1 - 1 - 4 Steel plate support bracket; 1 - 1 - 5 Welding bracket base; 1 - 1 - 6 Welding support column; 1 - 1 - 7 Welding lower bracket; 1 - 1 - 8 Welding upper bracket; 1 - 3 - 1 Outer positioning base; 1 - 3 - 2 Outer positioning drive cylinder; 1 - 3 - 3 Outer connecting plate; 1 - 3 - 4 Outer positioning - upper limit block; 1 - 3 - 5 Outer lower limit component; 1 - 3 - 6 Positioning surface; 1 - 3 - 7 Steel plate weld length - direction limiting surface; 1 - 3 - 8 Upper plate thickness limiting surface; 1 - 3 - 9 Lower plate thickness limiting surface; 1 - 3 - 10 Chamfer; 1 - 4 - 1 Rotating motor; 1 - 4 - 2 L - shaped connecting rod; 1 - 4 - 3 Upper anti - misalignment limiting drive cylinder; 1 - 4 - 4 Upper anti - misalignment limiting block; 1 - 4 - 5 Limiting drive cylinder; 1 - 4 - 6 C - shaped block; 1 - 5 - 1 Base connecting plate; 1 - 5 - 2 Telescopic drive cylinder component; 1 - 5 - 3 Limiting connecting plate; 1 - 5 - 4 Lower anti - misalignment limiting drive cylinder; 1 - 5 - 5 Lower anti - misalignment limiting block; 1 - 6 - 1 Right power drive cylinder; 1 - 6 - 2 Left power drive cylinder; 1 - 6 - 3 Right connecting plate; 1 - 6 - 4 Left connecting plate; 1 - 6 - 5 Drive motor; 1 - 6 - 6 Rolling roller; 1 - 9 - 1 Vertical shaft; 1 - 9 - 2 Horizontal guide rail shaft; 1 - 9 - 3 Welding head; 1 - 9 - 4 Welding and rolling wheel; 1 - 9 - 5 Side - blowing component; 1 - 9 - 6 Coaxial air nozzle; 1 - 9 - 7 Light - blocking plate; 2 - 1 - 1 Rolling bracket base; 2 - 1 - 2 Rolling lower guide rail; 2 - 1 - 3 Rolling upper guide rail; 2 - 1 - 4 Drive cylinder base bracket; 2 - 1 - 5 Lower support bracket; 2 - 1 - 6 Locking component; 2 - 1 - 7 Rolling support column; 2 - 1 - 8 Rolling upper bracket; 2 - 1 - 9 Rolling lower bracket; 2 - 2 - 1 Rolling drive cylinder; 2 - 2 - 2 Rolling connecting component; 2 - 2 - 3 Weld rolling wheel; 2 - 5 - 1 Positioning guide rail; 2 - 5 - 2 Loading positioning block; 2 - 6 - 1 Guiding drive cylinder; 2 - 6 - 2 Guide plate; 2 - 6 - 3 Guide wheel; 2 - 5 - 2 - 1 Loading base; 2 - 5 - 2 - 2 Loading adapter plate; 2 - 5 - 2 - 3 Loading drive cylinder; 2 - 5 - 2 - 4 Positioning block. Detailed implementation mode

[0042] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. To make the objectives, technical solutions and advantages of the present invention more clear and understandable, 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 exemplarily illustrate the principles of the present invention, and are not configured to limit the present invention. In addition, the components in the drawings are not necessarily drawn to scale. For example, the dimensions of some components or regions in the drawings may be enlarged for other components or regions to help understand the embodiments of the present invention.

[0043] The orientation terms appearing in the following description are all the directions shown in the drawings 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 "installed", "connected", and "coupled" 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 those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In addition, the terms "comprising", "including", "having" or any other variants thereof are intended to cover non-exclusive inclusion, such that a structure or component including a series of elements not only includes those elements but also other components that are not explicitly listed or are inherent to the structure or component. Without further limitation, an element defined by the statement "comprising..." does not exclude the presence of additional identical elements in the article or device including the element.

[0045] Spatial relationship terms such as "below", "beneath", "under", "lower", "above", "over", "upper", etc. are used to facilitate description to explain the positioning of one element relative to a second element and are intended to cover different orientations of the device in addition to the orientations shown in the figures. Additionally, 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. Further, terms such as "first", "second", etc. are also used to describe various elements, regions, parts, etc. and are not particularly intended to denote order or sequence and should not be construed as limiting. Similar terms denote similar elements throughout the description.

[0046] In the process of describing the present invention below, in certain scenario descriptions, only "rocket", "launch vehicle", "spacecraft", "space launch vehicle", or "missile" may be used. This is merely for convenience of description, and its connotation is not limited to the specific words used. Generally, the rockets of the present invention include both space launch vehicles or launch vehicles for carrying satellites, spaceships, or other detectors, and various missiles, rockets, and other weapons for carrying military payloads, as well as similar products capable of sending payloads into the air. When those skilled in the art interpret the above specific words, the rockets should not be limited to only one of the launch vehicle or missile according to the specific words used in the description scenario, so as not to narrow the protection scope of the present invention.

[0047] 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 to provide a better understanding of the present invention by showing examples of the present invention.

[0048] Figure 1 is a perspective view of a welding device for the longitudinal seam of the butt welding of large plates of a rocket tank barrel section according to an embodiment of the present invention; Figure 2 is a perspective view of an upper welding component according to an embodiment of the present invention; Figure 3 is a perspective view of a welding device for the longitudinal seam of the butt welding of large plates of a rocket tank barrel section according to another embodiment of the present invention; Figure 4 is a perspective view of a rolling component according to an embodiment of the present invention; Figure 5 is a left view of a welding device for the longitudinal seam of the butt welding of large plates of a rocket tank barrel section according to an embodiment of the present invention; Figure 6 is Figure 1 an enlarged view of A in Figure 7 is a front view of an upper welding component according to an embodiment of the present invention; Figure 8 is a perspective view of an outer positioning and limiting component according to an embodiment of the present invention; Figure 9 is a front view of an outer positioning and limiting component according to an embodiment of the present invention; Figure 10 is a right view of an outer positioning and limiting component according to an embodiment of the present invention; Figure 11 is a perspective view of a right rolling conveyor component according to an embodiment of the present invention; Figure 12 is a rear view of a welding device for the longitudinal seam of the butt welding of large plates of a rocket tank barrel section according to an embodiment of the present invention; Figure 13 is a perspective view of a lower anti-misalignment limiting component according to an embodiment of the present invention;

[0049] Figure 14 is a perspective view of an upper anti-misalignment limiting component according to an embodiment of the present invention; Figure 15 is Figure 1 an enlarged view of C in Figure 16 is Figure 12 an enlarged view of B inFigure 17 is a perspective view of the lower rolling member of an embodiment of the present invention; Figure 18 is a left view of the rolling member of an embodiment of the present invention; Figure 19 is a rear view of the rolling member of an embodiment of the present invention; Figure 20 is a perspective view of the feeding and positioning member of an embodiment of the present invention; Figure 21 is a perspective view of the feeding and positioning block of an embodiment of the present invention; Figure 22 is a perspective view of the steel plate guiding member of an embodiment of the present invention.

[0050] As Figure 1 and 2 shown, the present invention provides a welding device for the longitudinal seam butt welding of large plates of a rocket tank barrel section, including: a welding bracket 1-1. The welding bracket 1-1 includes: a welding upper bracket 1-1-8, a welding lower bracket 1-1-7, and a welding bracket base body 1-1-5. The welding upper bracket 1-1-8 and the welding lower bracket 1-1-7 are arranged at intervals and are fixedly connected through the welding bracket base body 1-1-5. The welding bracket 1-1 is provided with a steel plate support bracket 1-1-4, and the steel plate support bracket 1-1-4 is used for supporting the steel plate. At least one of the opposite end faces of the welding upper bracket 1-1-8 and the welding lower bracket 1-1-7 is provided with a welding head 1-9-3 that can move along its length direction ( Figure 1 in the S1 direction) to weld the butt longitudinal seam of the steel plate to be welded to form a tank barrel section.

[0051] The welding device provided in this embodiment can position and weld short barrel blanks. This welding device changes the welding position of the existing three-dimensional welding device into a relatively simple flat welding position, reduces the process difficulty and equipment complexity, and is easier to achieve back gas protection, with lower requirements for the equipment. In addition, the welding stability of this welding device is high. It has been verified that this welding device can butt-weld several cold-rolled hardened 301 stainless steel plates with specifications of 6000-7000 mm in length, 3000-5000 mm in width, and 0.4-3.0 mm in thickness into an ultra-large diameter (diameter > 4 meters) tank short barrel.

[0052] For example, the combination of the welding upper bracket 1-1-8, the welding lower bracket 1-1-7, and the welding bracket base body 1-1-5 can form a C-shaped welding bracket, serving as the basic load-bearing body for welding and the installation bracket for other components. For example, the welding head 1-9-3 can be a laser welding head to perform laser welding on the steel plate.

[0053] As Figure 3 and 4As shown, according to an embodiment of the present invention, in addition to the welding part 1-1, the welding equipment further includes a rolling part 2. The rolling part 2 includes a rolling support 2-1. The rolling support 2-1 includes: a rolling upper support 2-1-8, a rolling lower support 2-1-9, and a rolling support base 2-1-1. The rolling upper support 2-1-8 and the rolling lower support 2-1-9 are arranged at intervals and fixedly connected through the rolling support base 2-1-1. The rolling support 2-1 is provided with a lower support bracket 2-1-5, and the lower support bracket 2-1-5 is used to support the steel plate. At least one of the opposite end faces of the rolling upper support 2-1-8 and the rolling lower support 2-1-9 is provided with a weld rolling wheel 2-2-3 that can move along its length direction ( Figure 1 in the S1 direction) to roll the steel plate weld.

[0054] In this embodiment, the rolling part 2 can be placed beside the welding support 1-1. The rolling part 2 is used to roll and level the longitudinal seam of the short cylinder, remove most of the weld stress, and eliminate the weld reinforcement. This welding equipment can shape the weld, eliminate welding deformation, and improve the mechanical properties of the weld (for example, weld strength). For example, the combination of the rolling upper support 2-1-8, the rolling lower support 2-1-9, and the rolling support base 2-1-1 can form a C-shaped rolling support, serving as the bearing basic body for rolling and the installation support for other components. For example, the welding support 1-1 and the rolling support 2-1 can be arranged side by side, and the distance can be in the range of 200-500 mm. The short cylinder sheet material can be loaded from the side of the rolling support 2-1 away from the welding support 1-1, and after passing through the rolling support 2, it reaches the welding support 1-1 for welding. For example, the weld rolling wheel 2-2-3 can be made of cemented carbide with a hardness exceeding HRB150 (such as tool steel or die steel: Cr12MoV). The thickness of the weld rolling wheel 2-2-3 can be in the range of 5-30 mm, and the diameter can be in the range of 30-150 mm. For example, the welding support 1-1 and the rolling support 2-1 can be fixedly arranged on the ground.

[0055] As Figure 1 and 5 shown, according to an embodiment of the present invention, two steel plate support brackets 1-1-4 are arranged side by side in the horizontal direction on the welding support 1-1. The two steel plate support brackets 1-1-4 are arranged at intervals.

[0056] In this embodiment, for example, the steel plate support bracket 1-1-4 can be a steel support plate, providing a flat support surface for the steel plate to be welded. The interval between the two steel plate support brackets 1-1-4 can be 40-80 mm.

[0057] As Figure 1 and 12As shown, according to an embodiment of the present invention, welding upper brackets 1-1-8 and welding lower brackets 1-1-7 are respectively provided with welding upper guide rails 1-1-2 and welding lower guide rails 1-1-1 on their opposite end faces. The welding upper guide rail 1-1-2 is provided with an upper welding component 1-9, and the welding lower guide rail 1-1-1 is provided with a lower welding component 1-8. Both the upper welding component 1-9 and the lower welding component 1-8 are provided with welding heads 1-9-3 to weld the butt longitudinal seam from the front and back sides of the steel plate respectively.

[0058] The welding equipment provided in this embodiment can realize double-sided welding of the butt longitudinal seam. For example, the upper welding component 1-9 is fixedly connected to the slider of the welding upper guide rail 1-1-2, so that the slider drives the upper welding component 1-9 to perform a linear reciprocating motion relative to the welding upper guide rail 1-1-2 within the effective stroke. The lower welding component 1-8 is fixedly connected to the slider of the welding lower guide rail 1-1-1, so that the slider drives the lower welding component to perform a linear reciprocating motion relative to the welding lower guide rail 1-1-1 within the effective stroke. For example, the welding upper guide rail 1-1-2 and the welding lower guide rail 1-1-1 can be linear guide rails. The effective welding strokes of the welding upper guide rail 1-1-2 and the welding lower guide rail 1-1-1 can be the same. The effective stroke can be greater than the maximum length of the welding seam. For example, it is 800-1000 mm larger than the maximum length of the welding seam.

[0059] As Figure 1 shown, according to an embodiment of the present invention, in addition to the welding upper bracket 1-1-8, the welding lower bracket 1-1-7 and the welding bracket base 1-1-5, the welding bracket 1-1 further includes at least one welding support column 1-1-6. The welding support column 1-1-6 is arranged on both sides of the welding upper bracket 1-1-8 or the welding lower bracket 1-1-7 in the width direction ( Figure 1 the S2 direction).

[0060] In this embodiment, the welding support column 1-1-6 can increase the structural strength of the welding bracket 1-1 and can also be used to install other components. For example, the welding upper guide rail 1-1-2 and the welding lower guide rail 1-1-1 can be arranged on the side surfaces of the welding support column 1-1-6.

[0061] As Figure 2 and 6 shown, according to an embodiment of the present invention, in addition to the welding head 1-9-3, the upper welding component 1-9 further includes a vertical shaft 1-9-1 and a transverse guide rail shaft 1-9-2. Among them, the vertical shaft 1-9-1 is movably arranged on the welding upper guide rail 1-1-2. The transverse guide rail shaft 1-9-2 is arranged on the side surface of the vertical shaft 1-9-1, and the welding head 1-9-3 is arranged on the lower end surface of the transverse guide rail shaft 1-9-2. The transverse guide rail shaft 1-9-2 can be along the width direction of the welding upper guide rail 1-1-2 ( Figure 1Sliding relative to the vertical axis 1-9-1 in the S2 direction to drive the welding head 1-9-3 to align with the butt longitudinal seam of the steel plate to be welded.

[0062] For the welding equipment provided in this embodiment, the welding head 1-9-3 can spot-weld the weld seam before welding and weld the weld seam. For example, the structures of the upper welding component 1-9 and the lower welding component 1-8 can be the same or substantially the same. For example, during welding, the upper welding component 1-9 and the lower welding component 1-8 can be arranged oppositely and move synchronously to weld the butt longitudinal seam of the steel plate from the front and back sides of the steel plate respectively. For example, the vertical axis 1-9-1 can be fixedly connected to the slider of the welding upper guide rail 1-1-2. The transverse guide rail axis 1-9-2 can be fixedly connected to the slider of the vertical axis 1-9-1 on the side of the vertical axis 1-9-1 to drive the welding head 1-9-3 to move in a direction perpendicular to the weld seam of the steel plate ( Figure 2 the S3 direction, that is Figure 1 the S2 direction) of the steel plate. The welding head 1-9-3 can be arranged on the slider of the transverse guide rail axis 1-9-2 to move in a direction perpendicular to the weld seam of the steel plate ( Figure 2 the S3 direction).

[0063] As Figure 2 and 6 shown, according to an embodiment of the present invention, in addition to the welding head 1-9-3, the vertical axis 1-9-1 and the transverse guide rail axis 1-9-2, the upper welding component 1-9 further includes a side blowing component 1-9-5 and a coaxial gas nozzle 1-9-6. The side blowing component 1-9-5 is arranged beside the welding head 1-9-3. The side blowing component 1-9-5 is provided with a shielding gas passage. Shielding gas is introduced into the shielding gas passage of the side blowing component 1-9-5 to guide the shielding gas from beside the welding head 1-9-3 to the weld seam to perform gas protection on the weld seam and prevent the weld seam from oxidizing. The coaxial gas nozzle 1-9-6 is coaxially arranged with the welding head 1-9-3. The coaxial gas nozzle 1-9-6 is provided with a shielding gas passage. Shielding gas is introduced into the shielding gas passage of the coaxial gas nozzle 1-9-6 to guide the shielding gas along the axial direction of the welding head 1-9-3 to the weld seam to perform gas protection on the weld seam and prevent the weld seam from oxidizing.

[0064] The welding equipment provided in this embodiment can provide gas protection on the front and back sides of the butt longitudinal seam, which can not only save shielding gas but also ensure the stability of welding.

[0065] As Figure 2As shown, according to an embodiment of the present invention, in addition to the welding head 1-9-3, the vertical shaft 1-9-1, and the horizontal guide rail shaft 1-9-2, the upper welding component 1-9 further includes a welding rolling mechanism. The welding rolling mechanism includes a welding rolling drive cylinder and a welding rolling wheel 1-9-4, and the welding rolling wheel 1-9-4 is rotatably connected to the telescopic rod of the welding rolling drive cylinder. Along the welding direction of the longitudinal butt joint of the steel plate, a welding rolling mechanism is respectively arranged in front of and behind the welding head 1-9-3. By the telescopic movement of the telescopic rod of the welding rolling drive cylinder, the welding rolling wheel 1-9-4 is driven to approach or move away from the weld seam, so as to press the weld seam respectively in front of and behind the welding head 1-9-3.

[0066] In this embodiment, when the steel plates are assembled to form a weld seam, the telescopic rods of the welding rolling drive cylinders of the upper welding component 1-9 and the lower welding component 1-8 extend, pushing the welding rolling wheels 1-9-4 to move towards the weld seam respectively from the front and back sides of the steel plate, which can eliminate the misalignment of the weld seam in the plate thickness direction. For example, the welding rolling drive cylinder can be an electric cylinder.

[0067] As Figure 2 and 7 shown, in addition to the welding head 1-9-3, the vertical shaft 1-9-1, and the horizontal guide rail shaft 1-9-2, the upper welding component 1-9 further includes a light shield 1-9-7. The light shield 1-9-7 is arranged on the coaxial gas nozzle 1-9-6 or the welding head 1-9-3. The light shield 1-9-7 is used to prevent the relative lower welding component 1-8 or the upper welding component 1-9 from being burned when the upper welding component 1-9 and the lower welding component 1-8 weld the weld seam.

[0068] As Figure 1 and 5 shown, according to an embodiment of the present invention, on each side of the welding bracket 1-1 along its length direction ( Figure 1 the S1 direction), at least one pressing drive cylinder component 1-10 is arranged to press the steel plate on both sides of the longitudinal butt joint of the steel plate. The pressing drive cylinder component 1-10 includes a welding pressing drive cylinder and a welding pressing block, and the welding pressing block is fixedly connected to the telescopic rod of the welding pressing drive cylinder. By the telescopic movement of the telescopic rod of the welding pressing drive cylinder, the welding pressing block is driven to approach or move away from the steel plate.

[0069] In this embodiment, the pressing drive cylinder component 1-10 can press the steel plate during welding to prevent the steel plate from moving or undergoing severe deformation during the welding process. For example, the welding pressing drive cylinder can be a pneumatic cylinder. For example, on both sides of the width direction ( Figure 1 the S2 direction) of the upper bracket 1-1-8, a pressing drive cylinder mounting bracket 1-1-3 is respectively arranged. The pressing drive cylinder mounting bracket 1-1-3 is used to mount the pressing drive cylinder component 1-10. In the width direction ( Figure 1On both sides of the S2 direction), at least one welding support column 1-1-6 is provided respectively. The pressing drive cylinder mounting bracket 1-1-3 can be arranged on the welding support column 1-1-6.

[0070] As Figure 1 , 5 , 8 and 12 show, according to an embodiment of the present invention, the welding lower bracket 1-1-7 is provided with an outer positioning and limiting component 1-3 and an inner positioning and limiting component 1-2 on the end face opposite to the welding upper bracket 1-1-8. The outer positioning and limiting component 1-3 includes: an outer positioning base 1-3-1, an outer positioning drive cylinder 1-3-2 and an outer positioning upper limit block 1-3-4. The outer positioning drive cylinder 1-3-2 is arranged on the outer positioning base 1-3-1, and the outer positioning upper limit block 1-3-4 is connected to the telescopic rod of the outer positioning drive cylinder 1-3-2 to adjust the height of the outer positioning upper limit block 1-3-4. The inner positioning and limiting component 1-2 includes: an inner positioning base, an inner positioning drive cylinder and an inner positioning upper limit block. The inner positioning drive cylinder is arranged on the inner positioning base, and the inner positioning upper limit block is connected to the telescopic rod of the inner positioning drive cylinder to adjust the height of the inner positioning upper limit block. The outer positioning base 1-3-1 and the inner positioning base are arranged on the welding lower bracket 1-1-7 and are movably arranged relative to the welding lower bracket 1-1-7, so that the end faces of the outer positioning upper limit block 1-3-4 and the inner positioning upper limit block opposite to each other respectively abut against both ends of the longitudinal butt joint of the steel plates, so as to align the two steel plates to be welded.

[0071] In this embodiment, for example, the outer positioning and limiting component 1-3 and the inner positioning and limiting component 1-2 can be arranged relatively, and their structures can be the same or substantially the same. The outer positioning and limiting component 1-3 and the inner positioning and limiting component 1-2 cooperate to complete the pre-welding assembly and positioning of the steel plates, eliminating the offset of the steel plates in the length direction of the weld. The outer positioning and limiting component 1-3 and the inner positioning and limiting component 1-2 can be arranged on the welding lower guide rail 1-1-1 and are movable relative to the welding lower guide rail 1-1-1 to adapt to the length of the steel plates. For example, the outer positioning base 1-3-1 can be connected to the slider of the welding lower guide rail 1-1-1, and the inner positioning base can be connected to the slider of the welding upper guide rail 1-1-2. The outer positioning drive cylinder 1-3-2 and the inner positioning drive cylinder can be electric cylinders.

[0072] As Figures 8 - 10 shown, according to an embodiment of the present invention, along the width direction of the welding lower bracket ( Figure 1In the S2 direction), one side surface of the outer positioning - upper limit block 1 - 3 - 4 and the corresponding side surface of the inner positioning - upper limit block are the positioning surfaces 1 - 3 - 6. When the steel plate is loaded onto the welding bracket 1 - 1, adjust the positions of the outer positioning limit component 1 - 3 and the inner positioning limit component 1 - 2 along the welding lower guide rail 1 - 1 - 1 and the welding upper guide rail 1 - 1 - 2 respectively, and adjust the position of the steel plate so that the longitudinal butt joint seam to be welded on the steel plate fits the positioning surfaces 1 - 3 - 6 of the outer positioning - upper limit block 1 - 3 - 4 and the inner positioning - upper limit block, so as to position the steel plate in the width direction of the welding bracket 1 - 1.

[0073] In this embodiment, for example, the positioning surface 1 - 3 - 6 can be a rectangular surface with a length of 40 - 80 mm and a width of 30 - 50 mm. For example, load the first steel plate onto the welding bracket 1 - 1, adjust the positions of the outer positioning limit component 1 - 3 and the inner positioning limit component 1 - 2 along the welding lower guide rail 1 - 1 - 1 and the welding upper guide rail 1 - 1 - 2 respectively, and then adjust the position of the steel plate so that the longitudinal butt joint seam to be welded on the steel plate fits the positioning surfaces 1 - 3 - 6 of the outer positioning - upper limit block 1 - 3 - 4 and the inner positioning - upper limit block, and complete the positioning of the first steel plate in the width direction ( Figure 1 in the S2 direction) of the welding bracket 1 - 1.

[0074] As Figure 8 and 10 shown, according to an embodiment of the present invention, the opposite end faces of the outer positioning - upper limit block 1 - 3 - 4 and the inner positioning - upper limit block are the steel plate weld length direction limit surfaces 1 - 3 - 7. Adjust the positions of the outer positioning - upper limit block 1 - 3 - 4 and the inner positioning - upper limit block so that the steel plate weld length direction limit surfaces 1 - 3 - 7 of the two respectively fit the two side surfaces in the length direction of the steel plate, so as to eliminate the offset in the length direction of the steel plate.

[0075] In this embodiment, for example, the steel plate weld length direction limit surface 1 - 3 - 7 can be a rectangular surface with a length of 30 - 50 mm and a width of 20 - 28 mm. For example, after loading the first steel plate (that is, the longitudinal butt joint seam to be welded on the first steel plate fits the positioning surface 1 - 3 - 6), adjust the positions of the outer positioning limit component 1 - 3 and the inner positioning limit component 1 - 2 so that they do not interfere with the loading of the second steel plate. When the second steel plate is transported to within 3 - 5 mm of the first steel plate, adjust the positions of the outer positioning limit component 1 - 3 and the inner positioning limit component 1 - 2 so that the steel plate weld length direction limit surfaces 1 - 3 - 7 of the two respectively fit the two side surfaces in the length direction of the steel plate, and align the first steel plate and the second steel plate in the weld length direction, so as to eliminate the offset in the steel plate weld length direction.

[0076] As Figure 8As shown, according to an embodiment of the present invention, except for the outer positioning base 1-3-1, the outer positioning driving cylinder 1-3-2, and the outer positioning - upper limit block 1-3-4, the outer positioning limit component 1-3 further includes an outer connecting plate 1-3-3 and an outer lower limit component 1-3-5. The outer connecting plate 1-3-3 is connected to the telescopic rod of the outer positioning driving cylinder 1-3-2. The outer positioning - upper limit block 1-3-4 and the outer lower limit component 1-3-5 are arranged on the outer connecting plate 1-3-3. Except for the inner positioning base, the inner positioning driving cylinder, and the inner positioning - upper limit block, the inner positioning limit component 1-2 further includes an inner connecting plate and an inner lower limit component. The inner connecting plate is connected to the telescopic rod of the inner positioning driving cylinder. The inner positioning - upper limit block and the inner lower limit component are arranged on the inner connecting plate.

[0077] The outer lower limit component 1-3-5 and the inner lower limit component are arranged opposite to each other. Both the outer lower limit component 1-3-5 and the inner lower limit component include a lower limit driving cylinder and a lower limit block. The lower limit block is connected to the telescopic rod of the lower limit driving cylinder, and the height of the lower limit block is adjusted by the telescopic movement of the telescopic rod of the lower limit driving cylinder.

[0078] As Figures 8 - 10 shown, the upper end of the outer positioning - upper limit block 1-3-4 extends towards the outer lower limit component 1-3-5. The lower end surface of the extension is the upper plate thickness limit surface 1-3-8, and the upper end surface of the lower limit block is the corresponding lower plate thickness limit surface 1-3-9. Correspondingly, the upper end of the inner positioning - upper limit block extends towards the inner lower limit component. The extended lower end surface is the upper plate thickness limit surface 1-3-8, and the upper end surface of the lower limit block is the corresponding lower plate thickness limit surface 1-3-9. The upper plate thickness limit surface 1-3-8 and the corresponding lower plate thickness limit surface 1-3-9 are respectively attached to the front and back sides of the steel plate to eliminate the offset of the steel plate weld in the plate thickness direction.

[0079] In this embodiment, for example, after eliminating the offset of the steel plate weld in the length direction, control the outer positioning driving cylinder 1-3-2 and the inner positioning driving cylinder to descend to a specified height, and at the same time control the lower limit driving cylinders of the outer lower limit component 1-3-5 and the inner lower limit component to lift the lower plate thickness limit surface 1-3-9 of the lower limit block to a specified height to ensure that the upper plate thickness limit surface 1-3-8 and the corresponding lower plate thickness limit surface 1-3-9 are respectively attached to the front and back sides of the steel plate (at this time, the distance between the upper plate thickness limit surface 1-3-8 and the corresponding lower plate thickness limit surface 1-3-9 is equal to the plate thickness of the steel plate), which makes the lower plate thickness limit surface 1-3-9 flush with the upper end surface of the steel plate support frame 1-1-4 (i.e., the support surface for supporting the steel plate) to eliminate the plate thickness offset at both ends of the steel plate to be welded. For example, the lower limit driving cylinder can be an electric cylinder.

[0080] As Figure 10As shown, chamfers 1-3-10 are provided on the upper end extensions of the outer positioning-upper limit block 1-3-4, the upper end extensions of the inner positioning-upper limit block, the upper end faces of the lower limit blocks of the inner positioning-limit member 1-3 and the outer positioning-limit member 1-2 at the steel plate loading position to facilitate the loading of the steel plate.

[0081] As Figure 5 and 11 shown, according to an embodiment of the present invention, a left rolling conveyor member 1-7 and a right rolling conveyor member 1-6 are respectively provided on both sides in the width direction ( Figure 1 the S2 direction) of the welding bracket 1-1. Both the left rolling conveyor member 1-7 and the right rolling conveyor member 1-6 include two rotatable rolling rollers 1-6-6. The two relatively arranged rolling rollers 1-6-6 are used to respectively press from both side faces of the steel plate in the thickness direction to convey the steel plate to the welding equipment or send the steel plate out of the welding equipment.

[0082] For the left rolling conveyor member 1-7 and the right rolling conveyor member 1-6 of the welding equipment in this embodiment, the steel plate is driven to move by rolling the steel plate with the rolling rollers 1-6-6 to realize the loading or unloading of the steel plate. For example, the structures of the left rolling conveyor member 1-7 and the right rolling conveyor member 1-6 can be the same or substantially the same. The rolling roller 1-6-6 can be a rubber roller. On both sides in the width direction ( Figure 1 the S2 direction) of the welding bracket 1-1, four sets of left rolling conveyor members 1-7 and four sets of right rolling conveyor members 1-6 can be respectively provided.

[0083] As Figure 11 shown, according to an embodiment of the present invention, both the left rolling conveyor member 1-7 and the right rolling conveyor member 1-6 include an upper part and a lower part. The upper part and the lower part have the same or substantially the same structure and are basically symmetrically arranged. The structure of the lower part includes a left power driving cylinder 1-6-2, a right power driving cylinder 1-6-1, a left connecting plate 1-6-4, a right connecting plate 1-6-3 and a driving motor 1-6-5. The left connecting plate 1-6-4 is connected to the telescopic rod of the left power driving cylinder 1-6-2. The right connecting plate 1-6-3 is connected to the telescopic rod of the right power driving cylinder 1-6-1. Both ends of the rolling roller 1-6-6 are rotatably connected to the left connecting plate 1-6-4 and the right connecting plate 1-6-3 respectively. By the telescopic movement of the telescopic rods of the left power driving cylinder 1-6-2 and the right power driving cylinder 1-6-1 in the upper part and the lower part, the distance between the two correspondingly arranged rolling rollers 1-6-6 is adjusted to adjust the rolling pressure of the rolling rollers 1-6-6 on the steel plate. At least one end of the rolling roller 1-6-6 is connected to the rotating shaft of the driving motor 1-6-5. When the driving motor 1-6-5 is started, the rotating shaft of the driving motor 1-6-5 drives the rolling roller 1-6-6 to rotate.

[0084] In this embodiment, for example, the left power drive cylinder 1-6-2 and the right power drive cylinder 1-6-1 can be electric cylinders. For example, the upper parts of the left rolling conveyor member 1-7 and the right rolling conveyor member 1-6 can be mounted on the pressing drive cylinder mounting bracket 1-1-3, and the lower parts can be mounted on the steel plate support bracket 1-1-4.

[0085] As Figure 1 , 12 shown in FIGS. 13 and 12, according to an embodiment of the present invention, in addition to the welding bracket 1-1, the welding equipment further includes a lower anti-misalignment limiting member 1-5. The lower anti-misalignment limiting member 1-5 includes a base connecting plate 1-5-1, a telescopic drive cylinder member 1-5-2, a limiting connecting plate 1-5-3, a lower anti-misalignment limiting drive cylinder 1-5-4, and a lower anti-misalignment limiting block 1-5-5. The base connecting plate 1-5-1 is disposed on the lower end surface of the steel plate support bracket 1-1-4. The telescopic drive cylinder member 1-5-2 is disposed on the base connecting plate 1-5-1 and is arranged along the width direction ( Figure 1 the S2 direction) of the welding bracket 1-1. The limiting connecting plate 1-5-3 is connected to the telescopic rod of the telescopic drive cylinder member 1-5-2. The lower anti-misalignment limiting drive cylinder 1-5-4 is disposed on the limiting connecting plate 1-5-3 and is arranged in the vertical direction. The lower anti-misalignment limiting block 1-5-5 is connected to the telescopic rod of the lower anti-misalignment limiting drive cylinder 1-5-4. By the telescopic movement of the telescopic rod of the telescopic drive cylinder member 1-5-2, the limiting connecting plate 1-5-3, the lower anti-misalignment limiting drive cylinder 1-5-4, and the lower anti-misalignment limiting block 1-5-5 are horizontally extended or retracted to approach or move away from the longitudinal weld of the steel plate butt joint. By the telescopic movement of the telescopic rod of the lower anti-misalignment limiting drive cylinder 1-5-4, the lower anti-misalignment limiting block 1-5-5 faces towards or away from the lower end surface of the steel plate (i.e., the reverse side of the steel plate) to support or release the steel plate from the lower end surface of the steel plate.

[0086] In this embodiment, by the telescopic movement of the telescopic rod of the telescopic drive cylinder member 1-5-2, the limiting connecting plate 1-5-3, the lower anti-misalignment limiting drive cylinder 1-5-4, and the lower anti-misalignment limiting block 1-5-5 are horizontally extended or retracted, which can avoid the lower welding member 1-8 and provide space for the moving welding of the lower welding member 1-8. When the telescopic rod of the lower anti-misalignment limiting drive cylinder 1-5-4 extends, the contact surface of the lower anti-misalignment limiting block 1-5-5 with the steel plate is at the same height as the support surface of the steel plate support bracket 1-1-4.

[0087] For example, in the initial state of the lower anti-misalignment limiting component 1-5, the telescopic drive cylinder component 1-5-2 and the anti-misalignment limiting drive cylinder are in a contracted state. When it is necessary to support the steel plate, the telescopic rod of the telescopic drive cylinder component 1-5-2 extends, pushing the anti-misalignment limiting drive cylinder to a specified position. Then, the telescopic rod of the anti-misalignment limiting drive cylinder extends, causing the lower anti-misalignment limiting block 1-5-5 to extend and fit against the lower end face of the steel plate, and supporting the steel plate to reach a preset position (i.e., at the same height as the support surface of the steel plate support bracket 1-1-4).

[0088] Such as Figure 1 , 12 and 14-16, according to an embodiment of the present invention, in addition to the welding bracket 1-1 and the lower anti-misalignment limiting component 1-5, the welding equipment further includes an upper anti-misalignment limiting component 1-4. The upper anti-misalignment limiting component 1-4 includes a rotary motor 1-4-1, an L-shaped connecting rod 1-4-2, an upper anti-misalignment limiting drive cylinder 1-4-3, and an upper anti-misalignment limiting block 1-4-4. The rotary motor 1-4-1 is disposed on the upper end face of the pressing drive cylinder mounting bracket 1-1-3 and is arranged along the length direction ( Figure 1 in the S1 direction) of the pressing drive cylinder mounting bracket 1-1-3. The rotating rod of the rotary motor 1-4-1 is rotatably connected to one branch of the L-shaped connecting rod 1-4-2. The upper anti-misalignment limiting drive cylinder 1-4-3 is disposed on the side of the other branch of the L-shaped connecting rod 1-4-2 and is arranged along the extending direction of this branch. The upper anti-misalignment limiting block 1-4-4 is connected to the telescopic rod of the upper anti-misalignment limiting drive cylinder 1-4-3. Starting the rotary motor 1-4-1, driving the rotating rod of the rotary motor 1-4-1 to drive the L-shaped connecting rod 1-4-2 to rotate in a plane perpendicular to the length direction of the pressing drive cylinder mounting bracket 1-1-3 ( Figure 15 in the S6 plane), so that the upper anti-misalignment limiting drive cylinder 1-4-3 and the upper anti-misalignment limiting block 1-4-4 rotate towards or away from the steel plate. When the other branch of the L-shaped connecting rod 1-4-2 is in a vertical state, by extending or retracting the telescopic rod of the upper anti-misalignment limiting drive cylinder 1-4-3, the upper anti-misalignment limiting block 1-4-4 is moved towards or away from the upper end face (i.e., the front face of the steel plate) of the steel plate to press or release the steel plate from the upper end face of the steel plate.

[0089] In this embodiment, the telescopic rod of the upper anti-misalignment limiting drive cylinder 1-4-3 extends, pushing the upper anti-misalignment limiting block 1-4-4 to press the steel plate from the upper end face of the steel plate. The welding equipment can eliminate the misalignment in the thickness direction of the steel plate weld by the cooperation of the lower anti-misalignment limiting component 1-5 and the upper anti-misalignment limiting component 1-4, ensuring that the steel plate is in a horizontal state, thereby guaranteeing the welding accuracy.

[0090] For example, when the lower anti-misalignment edge limiting component 1-5 is in the state of supporting the steel plate, the rotary motor 1-4-1 starts, driving the L-shaped connecting rod 1-4-2 to rotate so that the upper anti-misalignment edge limiting block 1-4-4 faces the steel plate weld seam (for example, the strut of the L-shaped connecting rod 1-4-2 connecting the rotary motor 1-4-1 rotates 90° from the vertical state to the horizontal state. Then, the telescopic rod of the upper anti-misalignment edge driving cylinder 1-4-3 extends, pushing the upper anti-misalignment edge limiting block 1-4-4 to move downward and pressing the steel plate from the upper end face of the steel plate to eliminate the misalignment in the thickness direction of the steel plate and ensure that the steel plate is in a horizontal state.

[0091] For example, the telescopic driving cylinder component 1-5-2 can be a pneumatic cylinder. The lower anti-misalignment edge driving cylinder 1-5-4 can be an electric cylinder. The base connecting plate 1-5-1 can be a rectangular plate and can be installed on the lower end face of the steel plate support bracket 1-1-4 by screws. The upper anti-misalignment edge limiting block 1-4-4 can be a rectangular block with a length of 50 - 100 mm, a width of 30 - 50 mm, and a thickness of 20 - 40 mm. The upper anti-misalignment edge limiting block 1-4-4 is used to set a chamfer on the side of the end face of the steel plate. The welding equipment can include four sets of lower anti-misalignment edge limiting components 1-5 and four sets of upper anti-misalignment edge limiting components 1-4.

[0092] As Figure 14 and 15 As shown, according to an embodiment of the present invention, in addition to the rotary motor 1-4-1, the L-shaped connecting rod 1-4-2, the upper anti-misalignment edge driving cylinder 1-4-3, and the upper anti-misalignment edge limiting block 1-4-4, the upper anti-misalignment edge limiting component 1-4 further includes a limiting driving cylinder 1-4-5 and a C-shaped block 1-4-6. The limiting driving cylinder 1-4-5 is arranged on the upper end face of the pressing driving cylinder mounting bracket 1-1-3. The C-shaped block 1-4-6 is connected to the telescopic rod of the limiting driving cylinder 1-4-5, and the opening of the C-shaped block 1-4-6 faces the L-shaped connecting rod 1-4-2. When the upper anti-misalignment edge limiting block 1-4-4 presses the steel plate from the upper end face of the steel plate, the telescopic rod of the limiting driving cylinder 1-4-5 extends, so that the opening of the C-shaped block 1-4-6 catches the upper and lower end faces of a strut of the L-shaped connecting rod 1-4-2, providing support for the L-shaped connecting rod 1-4-2.

[0093] In this embodiment, when the upper anti-misalignment edge limiting block 1-4-4 presses the steel plate from the upper end face of the steel plate, by catching a strut of the L-shaped connecting rod 1-4-2 with the opening of the C-shaped block 1-4-6, a supporting force can be provided to the L-shaped connecting rod 1-4-2, restricting the rotation of the L-shaped connecting rod 1-4-2, ensuring that when the upper anti-misalignment edge driving cylinder 1-4-3 pushes out the upper anti-misalignment edge limiting block 1-4-4, the upper anti-misalignment edge limiting block 1-4-4 can exert sufficient pressure on the steel plate to cooperate with the lower anti-misalignment edge limiting component 1-5 to eliminate the misalignment in the thickness direction of the steel plate. For example, the limiting driving cylinder 1-4-5 can be a pneumatic cylinder.

[0094] As Figure 4 shown, according to an embodiment of the present invention, two lower support brackets 2-1-5 of the rolling bracket 2-1 are arranged side by side in the horizontal direction. The two lower support brackets 2-1-5 are arranged at intervals.

[0095] As Figure 4 and 17 shown, according to an embodiment of the present invention, the opposite end faces of the upper rolling bracket 2-1-8 and the lower rolling bracket 2-1-9 are respectively provided with an upper rolling guide rail 2-1-3 and a lower rolling guide rail 2-1-2. An upper rolling member 2-3 that can move relative to it is arranged on the upper rolling guide rail 2-1-3. A lower rolling member 2-2 that can move relative to it is arranged on the lower rolling guide rail 2-1-2. Weld seam rolling wheels 2-2-3 are arranged on both the upper rolling member 2-3 and the lower rolling member 2-2 to roll the longitudinal seam from the front and back sides of the steel plate respectively.

[0096] In this example, for example, the upper rolling member 2-3 is fixedly connected to the slider of the upper rolling guide rail 2-1-3, so that the slider drives the upper rolling member 2-3 to perform a linear reciprocating motion relative to the upper rolling guide rail 2-1-3 within the effective stroke. The lower rolling member 2-2 is fixedly connected to the slider of the lower rolling guide rail 2-1-2, so that the slider drives the lower rolling member 2-2 to perform a linear reciprocating motion relative to the lower rolling guide rail 2-1-2 within the effective stroke. For example, the upper rolling guide rail 2-1-3 and the lower rolling guide rail 2-1-2 can be linear guide rails. The effective welding strokes of the upper rolling guide rail 2-1-3 and the lower rolling guide rail 2-1-2 can be the same. The effective stroke can be greater than the maximum length of the welding seam. For example, it is 800-1000 mm larger than the maximum length of the welding seam.

[0097] In addition, the two steel plate support brackets 1-1-4 are arranged at intervals, which can provide a moving space for the leveling rollers and welding heads of the lower welding member 1-8 and the upper welding member 1-9, the inner positioning and limiting member 1-2, the outer positioning and limiting member 1-3, the upper anti-misalignment limiting member 1-4, the lower anti-misalignment limiting member 1-5, etc. The two lower support brackets 2-1-5 are arranged at intervals, which can provide a moving space for the weld seam rolling wheels 2-2-3 of the upper rolling member 2-3 and the lower rolling member 2-2, etc.

[0098] As Figure 4 and 17As shown, according to an embodiment of the present invention, the lower rolling member 2-2 includes a rolling drive cylinder 2-2-1, a rolling connection member 2-2-2, and a weld rolling wheel 2-2-3. The rolling drive cylinder 2-2-1 is movably disposed on the lower rolling guide rail 2-1-2. The rolling connection member 2-2-2 is connected to the telescopic rod of the rolling drive cylinder 2-2-1. The weld rolling wheel 2-2-3 is disposed at the end of the rolling connection member 2-2-2 away from the rolling drive cylinder 2-2-1 and is rotatably connected to the rolling connection member 2-2-2. By the telescopic movement of the telescopic rod of the rolling drive cylinder 2-2-1, the weld rolling wheel 2-2-3 is moved closer to or away from the longitudinal weld of the steel plate to roll or release the longitudinal weld of the steel plate.

[0099] In this embodiment, the upper rolling member 2-3 and the lower rolling member 2-2 cooperate to roll the weld from the front and back sides of the steel plate respectively. The structures of the upper rolling member 2-3 and the lower rolling member 2-2 can be the same or substantially the same. For example, the rolling drive cylinder 2-2-1 can be an electric cylinder to provide a strong thrust for the weld rolling wheel 2-2-3. For example, the rolling connection member 2-2-2 can be provided with a bushing, and the weld rolling wheel 2-2-3 is rotatably connected to the bushing to transmit the thrust of the rolling drive cylinder 2-2-1 to the steel plate.

[0100] As Figure 4 shown, according to an embodiment of the present invention, in addition to the upper rolling bracket 2-1-8, the lower rolling bracket 2-1-9, and the rolling bracket base 2-1-1, the rolling bracket 2-1 further includes at least one rolling support column 2-1-7. The rolling support column 2-1-7 is disposed on both sides of the upper rolling bracket 2-1-8 or the lower rolling bracket 2-1-9 in the width direction ( Figure 1 the S2 direction).

[0101] In this embodiment, the rolling support column 2-1-7 can reduce its weight while ensuring the structural strength of the rolling bracket 2-1. The rolling support column 2-1-7 can also be used to install other components. For example, the lower support bracket 2-1-5 can be installed on the side of the rolling support column 2-1-7.

[0102] As Figure 4 and 18 shown, according to an embodiment of the present invention, at least one pressing member 2-4 is disposed on each side of the rolling bracket 2-1 along its length direction ( Figure 1 the S1 direction) to press the steel plate on both sides of the longitudinal butt weld of the steel plate. The pressing member 2-4 includes a rolling pressing drive cylinder and a rolling pressing block, and the rolling pressing block is fixedly connected to the telescopic rod of the rolling pressing drive cylinder. By the telescopic movement of the telescopic rod of the rolling pressing drive cylinder, the rolling pressing block is driven to approach or move away from the steel plate.

[0103] In this embodiment, the pressing member 2-4 can press the steel plate against the supporting surface of the lower support bracket 2-1-5 when rolling the steel plate, preventing the steel plate from moving or undergoing severe deformation during the rolling process. For example, the rolling pressing drive cylinder can be a pneumatic cylinder. For example, on both sides of the rolling upper bracket 2-1-8 in the width direction ( Figure 1 in the S2 direction), a drive cylinder base bracket 2-1-4 is respectively arranged. The drive cylinder base bracket 2-1-4 is used to install the pressing member 2-4. For example, at least one rolling support column 2-1-7 is respectively arranged on both sides of the rolling upper bracket 2-1-8 in the width direction, and the drive cylinder base bracket 2-1-4 can be arranged on the rolling support column 2-1-7.

[0104] As Figure 4 shown, according to an embodiment of the present invention, in addition to the rolling upper bracket 2-1-8, the rolling lower bracket 2-1-9, and the rolling bracket base 2-1-1, the rolling bracket 2-1 further includes a locking member 2-1-6. The locking member 2-1-6 is used to connect the rolling upper bracket 2-1-8 and the rolling lower bracket 2-1-9 to lock the two.

[0105] In this embodiment, the locking member 2-1-6 is used to lock the rolling upper bracket 2-1-8 and the rolling lower bracket 2-1-9 to prevent the rolling bracket 2-1 from being spread open during the rolling process. For example, the locking member 2-1-6 can be arranged on the side surface of the rolling support column 2-1-7. On both sides of the width direction ( Figure 1 in the S2 direction) of the rolling bracket 2-1, a set of locking members 2-1-6 can be respectively arranged.

[0106] As Figures 18 - 21 shown, according to an embodiment of the present invention, a set of loading positioning members 2-5 are respectively arranged on the rolling upper bracket 2-1-8 and the rolling lower bracket 2-1-9. The loading positioning member 2-5 includes a positioning guide rail 2-5-1 and a loading positioning block 2-5-2, and the loading positioning block 2-5-2 is movably arranged relative to the positioning guide rail 2-5-1. The positioning guide rail 2-5-1 is arranged along the length direction ( Figure 1 in the S1 direction) of the rolling bracket 2-1. The loading positioning member 2-5 is arranged on the side of the rolling bracket 2-1 away from the welding bracket 1-1. During loading, the upper and lower sets of loading positioning members 2-5 respectively clamp the steel plate from the front and back sides thereof, and by adjusting the position of the loading positioning block 2-5-2 relative to the positioning guide rail 2-5-1, longitudinal positioning of the steel plate loading is performed.

[0107] In this embodiment, the loading and positioning component 2-5 can perform loading and positioning on the plate. In addition, the loading and positioning component 2-5 can also push the steel plate or short cylinder out from the C-shaped opening of the C-shaped rolling support. For example, two sets of loading and positioning blocks 2-5-2 that can slide relative to it can be provided on a positioning guide rail 2-5-1 to clamp the steel plate at both ends of the steel plate near the longitudinal seam in the length direction. The positioning guide rail 2-5-1 can be a linear guide rail. Two sets of sliders are provided on the linear guide rail, and one set of loading and positioning blocks 2-5-2 is provided on each of the two sets of sliders. For example, the positioning guide rail 2-5-1 of the loading and positioning component 2-5 provided on the upper rolling support 2-1-8 can be provided on the rolling support column 2-1-7. Correspondingly, the positioning guide rail 2-5-1 of the loading and positioning component 2-5 provided on the lower rolling support 2-1-9 can be provided on the driving cylinder base bracket 2-1-4.

[0108] As Figure 21 shown, according to an embodiment of the present invention, the loading and positioning block 2-5-2 includes a loading base 2-5-2-1, a loading adapter plate 2-5-2-2, a loading driving cylinder 2-5-2-3, and a positioning block 2-5-2-4. One side of the loading base 2-5-2-1 is provided on the positioning guide rail 2-5-1, and the loading adapter plate 2-5-2-2 is provided on the side of the loading base 2-5-2-1 away from the positioning guide rail 2-5-1. The loading base 2-5-2-1 is slidably provided relative to the positioning guide rail 2-5-1. The loading driving cylinder 2-5-2-3 is provided on the loading adapter plate 2-5-2-2 and is arranged in the vertical direction. The positioning block 2-5-2-4 is connected to the telescopic rod of the loading driving cylinder 2-5-2-3. By the telescopic movement of the telescopic rod of the loading driving cylinder 2-5-2-3, the positioning block 2-5-2-4 moves towards or away from the steel plate.

[0109] As Figure 1 and 5 shown, according to an embodiment of the present invention, a set of unloading and positioning components 1-11 are respectively provided on the welding upper support 1-1-8 and the welding lower support 1-1-7. The unloading and positioning component 1-11 is provided on the side of the welding support 1-1 away from the rolling support 2-1. The unloading and positioning component 1-11 is used for unloading and positioning the plate.

[0110] In this embodiment, the structure of the unloading and positioning component 1-11 can be the same as or substantially the same as the structure of the loading and positioning component 2-5. For example, the unloading and positioning component 1-11 includes a positioning guide rail and an unloading and positioning block. The positioning guide rail is along the length direction of the welding support 1-1 ( Figure 1It is set in the S1 direction). During blanking, the upper and lower sets of blanking positioning components 1-11 clamp the steel plate from the front and back sides respectively, and longitudinally position the steel plate blanking by adjusting the position of the blanking positioning block relative to the positioning guide rail. For example, two sets of blanking positioning blocks that can slide relative to it can be set on one positioning guide rail to press the steel plate at both ends of the steel plate near the longitudinal seam length direction. For example, the blanking positioning component 1-11 can be installed on the welding support column 1-1-6.

[0111] Such as Figure 18 and 22 As shown in the figure, according to an embodiment of the present invention, the rolling component 2 further includes a steel plate guiding component 2-6. The steel plate guiding component 2-6 includes a guiding driving cylinder 2-6-1, a guiding plate 2-6-2 and a guiding wheel 2-6-3. The guiding driving cylinder 2-6-1 is arranged on the side of the rolling support 2-1 away from the welding support 1-1 and is arranged in the vertical direction. The guiding wheel 2-6-3 is connected to the telescopic rod of the guiding driving cylinder 2-6-1. The guiding plate 2-6-2 is arranged on the side of the guiding driving cylinder 2-6-1 away from the rolling support 2-1 to guide the steel plate to the guiding wheel 2-6-3. By the telescopic movement of the telescopic rod of the guiding driving cylinder 2-6-1, the guiding wheel 2-6-3 approaches or moves away from the steel plate to guide the steel plate to the rolling station.

[0112] In this embodiment, the guiding component can guide the steel plate feeding through the cooperation of the guiding plate 2-6-2 and the guiding wheel 2-6-3. For example, the guiding driving cylinder 2-6-1 can be an electric cylinder. The guiding surface of the guiding plate 2-6-2 is adapted to the feeding direction of the steel plate. For example, the guiding plate 2-6-2 can be a right-angled triangular steel plate, and its inclined surface is the guiding surface of the steel plate. For example, the guiding driving cylinder 2-6-1 can be installed on the side of the driving cylinder base support 2-1-4 away from the rolling upper support 2-1-8. The guiding wheel 2-6-3 can be made of common hard alloy (such as 45 steel or tool steel, etc.). Along the length direction of the rolling upper support 2-1-8 ( Figure 1 in the S1 direction), 4 sets of steel plate guiding components 2-6 can be set.

[0113] For example, when the telescopic rod of the feeding driving cylinder 2-5-2-3 extends to the limit position, the positioning block 2-5-2-4 can contact the steel plate to be fed (for example, transferred from the transfer component), and the positioning block 2-5-2-4 determines the position of the feeding steel plate relative to the rolling support 2-1 in the vertical direction. When the telescopic rod of the feeding driving cylinder 2-5-2-3 contracts (for example, contracts to the middle stroke), the positioning block 2-5-2-4 can guide the steel plate to adjust the relative position between the steel plate and the guiding component.

[0114] In the present invention, the above-mentioned components, assemblies or parts can be fixedly connected by means such as screws, riveting, welding, etc., and the present invention does not specifically limit this. For example, the anti-misalignment limit driving cylinder can be fixedly connected to the limit connecting plate 1-5-3 by screws, the upper anti-misalignment limit driving cylinder 1-4-3 can be fixedly connected to the L-shaped connecting rod 1-4-2 by screws, the positioning base 1-3-1 can be locked to the slider of the welding lower guide rail 1-1-1 by screws, the loading base 2-5-2-1 can be locked to the slider of the positioning guide rail 2-5-1 by screws, the loading connecting plate 2-5-2-2 can be locked to the loading base 2-5-2-1 by screws, the loading driving cylinder 2-5-2-3 can be locked to the loading connecting plate 2-5-2-2 by screws, the guiding driving cylinder 2-6-1 can be installed on the driving cylinder base bracket 2-1-4 by screws, and the guiding plate 2-6-2 is locked to the guiding driving cylinder 2-6-1 by screws, etc.

[0115] The above-mentioned embodiments of the present invention can be combined with each other and have corresponding technical effects.

[0116] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A welding device for the longitudinal seam of butt welding of large plates of the barrel section of a rocket storage tank, characterized in that, Comprising: A welding bracket; the welding bracket includes a welding upper bracket, a welding lower bracket and a welding bracket base; the welding upper bracket and the welding lower bracket are arranged at intervals and fixedly connected through the welding bracket base; the welding bracket is provided with a steel plate support bracket for supporting the steel plate; at least one of the opposite end faces of the welding upper bracket and the welding lower bracket is provided with a welding head movable along its length direction to weld the butt longitudinal seam of the steel plate to be welded, forming a storage tank cylinder section.

2. The welding equipment according to claim 1, wherein, The opposite end faces of the welding upper bracket and the welding lower bracket are respectively provided with a welding upper guide rail and a welding lower guide rail; the welding upper guide rail is provided with an upper welding component, and the welding lower guide rail is provided with a lower welding component; both the upper welding component and the lower welding component are provided with welding heads to weld the butt longitudinal seam from the front and back sides of the steel plate respectively.

3. The welding device according to claim 2, characterized in that, The upper welding component further includes a vertical shaft and a transverse guide rail shaft; wherein, the vertical shaft is movably arranged on the welding upper guide rail; the transverse guide rail shaft is arranged on the side of the vertical shaft, and the welding head is arranged on the lower end face of the transverse guide rail shaft; the transverse guide rail shaft can slide relative to the vertical shaft along the width direction of the welding upper guide rail to drive the welding head to align with the butt longitudinal seam of the steel plate to be welded.

4. The welding device according to claim 3, characterized in that, The upper welding component further includes a welding rolling mechanism; the welding rolling mechanism includes a welding rolling drive cylinder and a welding rolling wheel; the welding rolling wheel is rotatably connected to the telescopic rod of the welding rolling drive cylinder; along the welding direction of the steel plate butt longitudinal seam, one welding rolling mechanism is respectively arranged in front of and behind the welding head; through the telescopic movement of the telescopic rod of the welding rolling drive cylinder, the welding rolling wheel is driven to approach or move away from the weld seam to tightly press the weld seam in front of and behind the welding head respectively.

5. The welding device according to claim 1, characterized in that, At least one pressing drive cylinder component is arranged on each side of the welding bracket along its length direction to press the steel plate on both sides of the steel plate butt longitudinal seam; the pressing drive cylinder component includes a welding pressing drive cylinder and a welding pressing block, and the welding pressing block is fixedly connected to the telescopic rod of the welding pressing drive cylinder; through the telescopic movement of the telescopic rod of the welding pressing drive cylinder, the welding pressing block is driven to approach or move away from the steel plate.

6. The welding device according to claim 1, characterized in that The end face of the welding lower bracket opposite to the welding upper bracket is provided with an outer positioning and limiting component and an inner positioning and limiting component; The outer positioning and limiting component includes an outer positioning base, an outer positioning drive cylinder and an outer positioning upper limiting block; the outer positioning drive cylinder is arranged on the outer positioning base, and the outer positioning upper limiting block is connected to the telescopic rod of the outer positioning drive cylinder to adjust the height of the outer positioning upper limiting block; The inner positioning and limiting component includes an inner positioning base, an inner positioning drive cylinder and an inner positioning upper limiting block; the inner positioning drive cylinder is arranged on the inner positioning base, and the inner positioning upper limiting block is connected to the telescopic rod of the inner positioning drive cylinder to adjust the height of the inner positioning upper limiting block; The outer positioning base and the inner positioning base are arranged on the lower welding bracket and are movably arranged relative to the lower welding bracket, so that the end faces of the outer positioning-upper limit block and the inner positioning-upper limit block facing each other respectively abut against both ends of the longitudinal butt joint of the steel plate, so as to align the two steel plates to be welded.

7. The welding device according to claim 6, wherein The outer positioning and limiting component further includes an outer connecting plate and an outer lower limiting component; the outer connecting plate is connected to the telescopic rod of the outer positioning driving cylinder; the outer positioning-upper limit block and the outer lower limiting component are arranged on the outer connecting plate; the inner positioning and limiting component further includes an inner connecting plate and an inner lower limiting component; the inner connecting plate is connected to the telescopic rod of the inner positioning driving cylinder; the inner positioning-upper limit block and the inner lower limiting component are arranged on the inner connecting plate; The outer lower limiting component and the inner lower limiting component are arranged opposite to each other; both the outer lower limiting component and the inner lower limiting component include a lower limiting driving cylinder and a lower limiting block; the lower limiting block is connected to the telescopic rod of the lower limiting driving cylinder, and the height of the lower limiting block is adjusted by the telescopic movement of the telescopic rod of the lower limiting driving cylinder; The upper end of the outer positioning-upper limit block extends towards the outer lower limiting component; the lower end face at the extension is the upper plate thickness limiting face, and the upper end face of the lower limiting block is the corresponding lower plate thickness limiting face; correspondingly, the upper end of the inner positioning-upper limit block extends towards the inner lower limiting component; the lower end face of the extension is the upper plate thickness limiting face, and the upper end face of the lower limiting block is the corresponding lower plate thickness limiting face; the upper plate thickness limiting face and the corresponding lower plate thickness limiting face respectively fit the front and back sides of the steel plate to eliminate the misalignment of the steel plate weld in the plate thickness direction.

8. The welding device according to claim 1, characterized in that, On both sides in the width direction of the welding bracket, a left rolling conveying component and a right rolling conveying component are respectively arranged; both the left rolling conveying component and the right rolling conveying component include two rotatable rolling rollers; the two relatively arranged rolling rollers are used to respectively press from both sides of the steel plate in the thickness direction to convey the steel plate to the welding equipment or send the steel plate out of the welding equipment.

9. The welding device according to claim 1, characterized in that, It further includes a lower anti-misalignment limiting component; the lower anti-misalignment limiting component includes a base connecting plate, a telescopic driving cylinder component, a limiting connecting plate, a lower anti-misalignment limiting driving cylinder and a lower anti-misalignment limiting block; the base connecting plate is arranged on the lower end face of the steel plate support bracket; the telescopic driving cylinder component is arranged on the base connecting plate and is arranged along the width direction of the welding bracket; the limiting connecting plate is connected to the telescopic rod of the telescopic driving cylinder component; the lower anti-misalignment limiting driving cylinder is arranged on the limiting connecting plate and is arranged along the vertical direction; the lower anti-misalignment limiting block is connected to the telescopic rod of the lower anti-misalignment limiting driving cylinder; through the telescopic movement of the telescopic rod of the telescopic driving cylinder component, the limiting connecting plate, the lower anti-misalignment limiting driving cylinder and the lower anti-misalignment limiting block are horizontally extended or retracted to approach or move away from the longitudinal butt joint of the steel plate; through the telescopic movement of the telescopic rod of the lower anti-misalignment limiting driving cylinder, the lower anti-misalignment limiting block faces towards or away from the lower end face of the steel plate to support or release the steel plate from the lower end face of the steel plate.

10. The welding device according to claim 1, characterized in that, It further includes an upper anti-misalignment edge limiting component; the upper anti-misalignment edge limiting component includes a rotating motor, an L-shaped connecting rod, an upper anti-misalignment edge limiting driving cylinder, and an upper anti-misalignment edge limiting block; the rotating motor is arranged on the upper end surface of the pressing driving cylinder mounting bracket and is arranged along the length direction of the pressing driving cylinder mounting bracket; the rotating rod of the rotating motor is rotatably connected to one branch rod of the L-shaped connecting rod; the upper anti-misalignment edge limiting driving cylinder is arranged on the side surface of the other branch rod of the L-shaped connecting rod and is arranged along the extending direction of this branch rod; the upper anti-misalignment edge limiting block is connected to the telescopic rod of the upper anti-misalignment edge limiting driving cylinder; when the rotating motor is started, the rotating rod of the rotating motor drives the L-shaped connecting rod to rotate in a plane perpendicular to the length direction of the pressing driving cylinder mounting bracket, so that the upper anti-misalignment edge limiting driving cylinder and the upper anti-misalignment edge limiting block rotate towards or away from the steel plate; when the other branch rod of the L-shaped connecting rod is in a vertical state, by the telescopic movement of the telescopic rod of the upper anti-misalignment edge limiting driving cylinder, the upper anti-misalignment edge limiting block rotates towards or away from the upper end surface of the steel plate, so as to press or release the steel plate from the upper end surface of the steel plate.

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